Refine code and add tests for #4289. v7.0.45 (#4412)

Use AI to understand, add comments, add utests, refactor code for PR
#4289

trunk/3rdparty/srs-bench/gb28181/h265reader.go

@@ -1,226 +1,50 @@
-// Package h265reader implements a H265 Annex-B Reader
+// Package gb28181 provides GB28181 protocol support
 package gb28181
 
 import (
-	"bytes"
-	"errors"
 	"io"
+
+	"github.com/pion/webrtc/v4/pkg/media/h265reader"
 )
 
-type NalUnitType uint8
+// Type aliases for compatibility with existing code
+type H265Reader = h265reader.H265Reader
+type NAL = h265reader.NAL
+type NalUnitType = h265reader.NalUnitType
 
-// Enums for NalUnitTypes
+// NAL unit type constants for compatibility with existing code
 const (
-	NaluTypeSliceTrailN NalUnitType = 0 // 0x0
-	NaluTypeSliceTrailR NalUnitType = 1 // 0x01
-	NaluTypeSliceTsaN   NalUnitType = 2 // 0x02
-	NaluTypeSliceTsaR   NalUnitType = 3 // 0x03
-	NaluTypeSliceStsaN  NalUnitType = 4 // 0x04
-	NaluTypeSliceStsaR  NalUnitType = 5 // 0x05
-	NaluTypeSliceRadlN  NalUnitType = 6 // 0x06
-	NaluTypeSliceRadlR  NalUnitType = 7 // 0x07
-	NaluTypeSliceRaslN  NalUnitType = 8 // 0x06
-	NaluTypeSliceRaslR  NalUnitType = 9 // 0x09
+	NaluTypeSliceTrailN = h265reader.NalUnitTypeTrailN
+	NaluTypeSliceTrailR = h265reader.NalUnitTypeTrailR
+	NaluTypeSliceTsaN   = h265reader.NalUnitTypeTsaN
+	NaluTypeSliceTsaR   = h265reader.NalUnitTypeTsaR
+	NaluTypeSliceStsaN  = h265reader.NalUnitTypeStsaN
+	NaluTypeSliceStsaR  = h265reader.NalUnitTypeStsaR
+	NaluTypeSliceRadlN  = h265reader.NalUnitTypeRadlN
+	NaluTypeSliceRadlR  = h265reader.NalUnitTypeRadlR
+	NaluTypeSliceRaslN  = h265reader.NalUnitTypeRaslN
+	NaluTypeSliceRaslR  = h265reader.NalUnitTypeRaslR
 
-	NaluTypeSliceBlaWlp       NalUnitType = 16 // 0x10
-	NaluTypeSliceBlaWradl     NalUnitType = 17 // 0x11
-	NaluTypeSliceBlaNlp       NalUnitType = 18 // 0x12
-	NaluTypeSliceIdr          NalUnitType = 19 // 0x13
-	NaluTypeSliceIdrNlp       NalUnitType = 20 // 0x14
-	NaluTypeSliceCranut       NalUnitType = 21 // 0x15
-	NaluTypeSliceRsvIrapVcl22 NalUnitType = 22 // 0x16
-	NaluTypeSliceRsvIrapVcl23 NalUnitType = 23 // 0x17
+	NaluTypeSliceBlaWlp       = h265reader.NalUnitTypeBlaWLp
+	NaluTypeSliceBlaWradl     = h265reader.NalUnitTypeBlaWRadl
+	NaluTypeSliceBlaNlp       = h265reader.NalUnitTypeBlaNLp
+	NaluTypeSliceIdr          = h265reader.NalUnitTypeIdrWRadl
+	NaluTypeSliceIdrNlp       = h265reader.NalUnitTypeIdrNLp
+	NaluTypeSliceCranut       = h265reader.NalUnitTypeCraNut
+	NaluTypeSliceRsvIrapVcl22 = h265reader.NalUnitTypeReserved41 // Approximate mapping
+	NaluTypeSliceRsvIrapVcl23 = h265reader.NalUnitTypeReserved47 // Approximate mapping
 
-	NaluTypeVps       NalUnitType = 32 // 0x20
-	NaluTypeSps       NalUnitType = 33 // 0x21
-	NaluTypePps       NalUnitType = 34 // 0x22
-	NaluTypeAud       NalUnitType = 35 // 0x23
-	NaluTypeSei       NalUnitType = 39 // 0x27
-	NaluTypeSeiSuffix NalUnitType = 40 // 0x28
+	NaluTypeVps       = h265reader.NalUnitTypeVps
+	NaluTypeSps       = h265reader.NalUnitTypeSps
+	NaluTypePps       = h265reader.NalUnitTypePps
+	NaluTypeAud       = h265reader.NalUnitTypeAud
+	NaluTypeSei       = h265reader.NalUnitTypePrefixSei
+	NaluTypeSeiSuffix = h265reader.NalUnitTypeSuffixSei
 
-	NaluTypeUnspecified NalUnitType = 48 // 0x30
+	NaluTypeUnspecified = h265reader.NalUnitTypeUnspec48
 )
 
-// H265Reader reads data from stream and constructs h265 nal units
-type H265Reader struct {
-	stream                      io.Reader
-	nalBuffer                   []byte
-	countOfConsecutiveZeroBytes int
-	nalPrefixParsed             bool
-	readBuffer                  []byte
-}
-
-var (
-	errNilReader           = errors.New("stream is nil")
-	errDataIsNotH265Stream = errors.New("data is not a H265 bitstream")
-)
-
-// NewReader creates new H265Reader
+// NewReader creates new H265Reader using Pion's implementation
 func NewReader(in io.Reader) (*H265Reader, error) {
-	if in == nil {
-		return nil, errNilReader
-	}
-
-	reader := &H265Reader{
-		stream:          in,
-		nalBuffer:       make([]byte, 0),
-		nalPrefixParsed: false,
-		readBuffer:      make([]byte, 0),
-	}
-
-	return reader, nil
-}
-
-// NAL H.265 Network Abstraction Layer
-type NAL struct {
-	PictureOrderCount uint32
-
-	// NAL header
-	ForbiddenZeroBit   bool
-	UnitType           NalUnitType
-	NuhLayerId         uint8
-	NuhTemporalIdPlus1 uint8
-
-	Data []byte // header byte + rbsp
-}
-
-func (reader *H265Reader) read(numToRead int) (data []byte) {
-	for len(reader.readBuffer) < numToRead {
-		buf := make([]byte, 4096)
-		n, err := reader.stream.Read(buf)
-		if n == 0 || err != nil {
-			break
-		}
-		buf = buf[0:n]
-		reader.readBuffer = append(reader.readBuffer, buf...)
-	}
-	var numShouldRead int
-	if numToRead <= len(reader.readBuffer) {
-		numShouldRead = numToRead
-	} else {
-		numShouldRead = len(reader.readBuffer)
-	}
-	data = reader.readBuffer[0:numShouldRead]
-	reader.readBuffer = reader.readBuffer[numShouldRead:]
-	return data
-}
-
-func (reader *H265Reader) bitStreamStartsWithH265Prefix() (prefixLength int, e error) {
-	nalPrefix3Bytes := []byte{0, 0, 1}
-	nalPrefix4Bytes := []byte{0, 0, 0, 1}
-
-	prefixBuffer := reader.read(4)
-
-	n := len(prefixBuffer)
-
-	if n == 0 {
-		return 0, io.EOF
-	}
-
-	if n < 3 {
-		return 0, errDataIsNotH265Stream
-	}
-
-	nalPrefix3BytesFound := bytes.Equal(nalPrefix3Bytes, prefixBuffer[:3])
-	if n == 3 {
-		if nalPrefix3BytesFound {
-			return 0, io.EOF
-		}
-		return 0, errDataIsNotH265Stream
-	}
-
-	// n == 4
-	if nalPrefix3BytesFound {
-		reader.nalBuffer = append(reader.nalBuffer, prefixBuffer[3])
-		return 3, nil
-	}
-
-	nalPrefix4BytesFound := bytes.Equal(nalPrefix4Bytes, prefixBuffer)
-	if nalPrefix4BytesFound {
-		return 4, nil
-	}
-	return 0, errDataIsNotH265Stream
-}
-
-// NextNAL reads from stream and returns then next NAL,
-// and an error if there is incomplete frame data.
-// Returns all nil values when no more NALs are available.
-func (reader *H265Reader) NextNAL() (*NAL, error) {
-	if !reader.nalPrefixParsed {
-		_, err := reader.bitStreamStartsWithH265Prefix()
-		if err != nil {
-			return nil, err
-		}
-
-		reader.nalPrefixParsed = true
-	}
-
-	for {
-		buffer := reader.read(1)
-		n := len(buffer)
-
-		if n != 1 {
-			break
-		}
-		readByte := buffer[0]
-		nalFound := reader.processByte(readByte)
-		if nalFound {
-			nal := newNal(reader.nalBuffer)
-			nal.parseHeader()
-			if nal.UnitType == NaluTypeSeiSuffix || nal.UnitType == NaluTypeSei {
-				reader.nalBuffer = nil
-				continue
-			} else {
-				break
-			}
-		}
-
-		reader.nalBuffer = append(reader.nalBuffer, readByte)
-	}
-
-	if len(reader.nalBuffer) == 0 {
-		return nil, io.EOF
-	}
-
-	nal := newNal(reader.nalBuffer)
-	reader.nalBuffer = nil
-	nal.parseHeader()
-
-	return nal, nil
-}
-
-func (reader *H265Reader) processByte(readByte byte) (nalFound bool) {
-	nalFound = false
-
-	switch readByte {
-	case 0:
-		reader.countOfConsecutiveZeroBytes++
-	case 1:
-		if reader.countOfConsecutiveZeroBytes >= 2 {
-			countOfConsecutiveZeroBytesInPrefix := 2
-			if reader.countOfConsecutiveZeroBytes > 2 {
-				countOfConsecutiveZeroBytesInPrefix = 3
-			}
-			nalUnitLength := len(reader.nalBuffer) - countOfConsecutiveZeroBytesInPrefix
-			reader.nalBuffer = reader.nalBuffer[0:nalUnitLength]
-			reader.countOfConsecutiveZeroBytes = 0
-			nalFound = true
-		} else {
-			reader.countOfConsecutiveZeroBytes = 0
-		}
-	default:
-		reader.countOfConsecutiveZeroBytes = 0
-	}
-
-	return nalFound
-}
-
-func newNal(data []byte) *NAL {
-	return &NAL{PictureOrderCount: 0, ForbiddenZeroBit: false, UnitType: NaluTypeUnspecified, Data: data}
-}
-
-func (h *NAL) parseHeader() {
-	firstByte := h.Data[0]
-	h.ForbiddenZeroBit = (((firstByte & 0x80) >> 7) == 1) // 0x80 = 0b10000000
-	h.UnitType = NalUnitType((firstByte & 0x7E) >> 1)     // 0x1F = 0b01111110
+	return h265reader.NewReader(in)
 }

trunk/3rdparty/srs-bench/gb28181/ingester.go

@@ -456,13 +456,13 @@ func (v *PSIngester) writeH265(ctx context.Context, pack *PSPackStream, h265 *H2
 
 		videoFrames = append(videoFrames, frame)
 		logger.If(ctx, "NALU %v PictureOrderCount=%v, ForbiddenZeroBit=%v, %v bytes",
-			frame.UnitType, frame.PictureOrderCount, frame.ForbiddenZeroBit, len(frame.Data))
+			frame.NalUnitType, frame.PictureOrderCount, frame.ForbiddenZeroBit, len(frame.Data))
 
-		if frame.UnitType == NaluTypeVps {
+		if frame.NalUnitType == NaluTypeVps {
 			vps = frame
-		} else if frame.UnitType == NaluTypeSps {
+		} else if frame.NalUnitType == NaluTypeSps {
 			sps = frame
-		} else if frame.UnitType == NaluTypePps {
+		} else if frame.NalUnitType == NaluTypePps {
 			pps = frame
 		} else {
 			break

trunk/3rdparty/srs-bench/go.mod

@@ -1,6 +1,6 @@
 module github.com/ossrs/srs-bench
 
-go 1.21
+go 1.23.0
 
 require (
 	github.com/ghettovoice/gosip v0.0.0-20220929080231-de8ba881be83
@@ -8,13 +8,13 @@ require (
 	github.com/haivision/srtgo v0.0.0-20230627061225-a70d53fcd618
 	github.com/ossrs/go-oryx-lib v0.0.9
 	github.com/pion/ice/v4 v4.0.10
-	github.com/pion/interceptor v0.1.37
-	github.com/pion/logging v0.2.3
+	github.com/pion/interceptor v0.1.40
+	github.com/pion/logging v0.2.4
 	github.com/pion/rtcp v1.2.15
-	github.com/pion/rtp v1.8.15
-	github.com/pion/sdp/v3 v3.0.11
+	github.com/pion/rtp v1.8.20
+	github.com/pion/sdp/v3 v3.0.14
 	github.com/pion/transport/v3 v3.0.7
-	github.com/pion/webrtc/v4 v4.1.1
+	github.com/pion/webrtc/v4 v4.1.3
 	github.com/pkg/errors v0.9.1
 	github.com/yapingcat/gomedia/codec v0.0.0-20220617074658-94762898dc25
 	github.com/yapingcat/gomedia/mpeg2 v0.0.0-20220617074658-94762898dc25
@@ -35,16 +35,16 @@ require (
 	github.com/pion/mdns/v2 v2.0.7 // indirect
 	github.com/pion/randutil v0.1.0 // indirect
 	github.com/pion/sctp v1.8.39 // indirect
-	github.com/pion/srtp/v3 v3.0.4 // indirect
+	github.com/pion/srtp/v3 v3.0.6 // indirect
 	github.com/pion/stun/v3 v3.0.0 // indirect
-	github.com/pion/turn/v4 v4.0.0 // indirect
+	github.com/pion/turn/v4 v4.0.2 // indirect
 	github.com/satori/go.uuid v1.2.1-0.20181028125025-b2ce2384e17b // indirect
 	github.com/sirupsen/logrus v1.4.2 // indirect
 	github.com/tevino/abool v0.0.0-20170917061928-9b9efcf221b5 // indirect
 	github.com/wlynxg/anet v0.0.5 // indirect
 	github.com/x-cray/logrus-prefixed-formatter v0.5.2 // indirect
-	golang.org/x/crypto v0.33.0 // indirect
-	golang.org/x/net v0.35.0 // indirect
-	golang.org/x/sys v0.30.0 // indirect
-	golang.org/x/term v0.29.0 // indirect
+	golang.org/x/crypto v0.39.0 // indirect
+	golang.org/x/net v0.41.0 // indirect
+	golang.org/x/sys v0.33.0 // indirect
+	golang.org/x/term v0.32.0 // indirect
 )

trunk/3rdparty/srs-bench/go.sum

@@ -65,32 +65,32 @@ github.com/pion/dtls/v3 v3.0.6 h1:7Hkd8WhAJNbRgq9RgdNh1aaWlZlGpYTzdqjy9x9sK2E=
 github.com/pion/dtls/v3 v3.0.6/go.mod h1:iJxNQ3Uhn1NZWOMWlLxEEHAN5yX7GyPvvKw04v9bzYU=
 github.com/pion/ice/v4 v4.0.10 h1:P59w1iauC/wPk9PdY8Vjl4fOFL5B+USq1+xbDcN6gT4=
 github.com/pion/ice/v4 v4.0.10/go.mod h1:y3M18aPhIxLlcO/4dn9X8LzLLSma84cx6emMSu14FGw=
-github.com/pion/interceptor v0.1.37 h1:aRA8Zpab/wE7/c0O3fh1PqY0AJI3fCSEM5lRWJVorwI=
-github.com/pion/interceptor v0.1.37/go.mod h1:JzxbJ4umVTlZAf+/utHzNesY8tmRkM2lVmkS82TTj8Y=
-github.com/pion/logging v0.2.3 h1:gHuf0zpoh1GW67Nr6Gj4cv5Z9ZscU7g/EaoC/Ke/igI=
-github.com/pion/logging v0.2.3/go.mod h1:z8YfknkquMe1csOrxK5kc+5/ZPAzMxbKLX5aXpbpC90=
+github.com/pion/interceptor v0.1.40 h1:e0BjnPcGpr2CFQgKhrQisBU7V3GXK6wrfYrGYaU6Jq4=
+github.com/pion/interceptor v0.1.40/go.mod h1:Z6kqH7M/FYirg3frjGJ21VLSRJGBXB/KqaTIrdqnOic=
+github.com/pion/logging v0.2.4 h1:tTew+7cmQ+Mc1pTBLKH2puKsOvhm32dROumOZ655zB8=
+github.com/pion/logging v0.2.4/go.mod h1:DffhXTKYdNZU+KtJ5pyQDjvOAh/GsNSyv1lbkFbe3so=
 github.com/pion/mdns/v2 v2.0.7 h1:c9kM8ewCgjslaAmicYMFQIde2H9/lrZpjBkN8VwoVtM=
 github.com/pion/mdns/v2 v2.0.7/go.mod h1:vAdSYNAT0Jy3Ru0zl2YiW3Rm/fJCwIeM0nToenfOJKA=
 github.com/pion/randutil v0.1.0 h1:CFG1UdESneORglEsnimhUjf33Rwjubwj6xfiOXBa3mA=
 github.com/pion/randutil v0.1.0/go.mod h1:XcJrSMMbbMRhASFVOlj/5hQial/Y8oH/HVo7TBZq+j8=
 github.com/pion/rtcp v1.2.15 h1:LZQi2JbdipLOj4eBjK4wlVoQWfrZbh3Q6eHtWtJBZBo=
 github.com/pion/rtcp v1.2.15/go.mod h1:jlGuAjHMEXwMUHK78RgX0UmEJFV4zUKOFHR7OP+D3D0=
-github.com/pion/rtp v1.8.15 h1:MuhuGn1cxpVCPLNY1lI7F1tQ8Spntpgf12ob+pOYT8s=
-github.com/pion/rtp v1.8.15/go.mod h1:bAu2UFKScgzyFqvUKmbvzSdPr+NGbZtv6UB2hesqXBk=
+github.com/pion/rtp v1.8.20 h1:8zcyqohadZE8FCBeGdyEvHiclPIezcwRQH9zfapFyYI=
+github.com/pion/rtp v1.8.20/go.mod h1:bAu2UFKScgzyFqvUKmbvzSdPr+NGbZtv6UB2hesqXBk=
 github.com/pion/sctp v1.8.39 h1:PJma40vRHa3UTO3C4MyeJDQ+KIobVYRZQZ0Nt7SjQnE=
 github.com/pion/sctp v1.8.39/go.mod h1:cNiLdchXra8fHQwmIoqw0MbLLMs+f7uQ+dGMG2gWebE=
-github.com/pion/sdp/v3 v3.0.11 h1:VhgVSopdsBKwhCFoyyPmT1fKMeV9nLMrEKxNOdy3IVI=
-github.com/pion/sdp/v3 v3.0.11/go.mod h1:88GMahN5xnScv1hIMTqLdu/cOcUkj6a9ytbncwMCq2E=
-github.com/pion/srtp/v3 v3.0.4 h1:2Z6vDVxzrX3UHEgrUyIGM4rRouoC7v+NiF1IHtp9B5M=
-github.com/pion/srtp/v3 v3.0.4/go.mod h1:1Jx3FwDoxpRaTh1oRV8A/6G1BnFL+QI82eK4ms8EEJQ=
+github.com/pion/sdp/v3 v3.0.14 h1:1h7gBr9FhOWH5GjWWY5lcw/U85MtdcibTyt/o6RxRUI=
+github.com/pion/sdp/v3 v3.0.14/go.mod h1:88GMahN5xnScv1hIMTqLdu/cOcUkj6a9ytbncwMCq2E=
+github.com/pion/srtp/v3 v3.0.6 h1:E2gyj1f5X10sB/qILUGIkL4C2CqK269Xq167PbGCc/4=
+github.com/pion/srtp/v3 v3.0.6/go.mod h1:BxvziG3v/armJHAaJ87euvkhHqWe9I7iiOy50K2QkhY=
 github.com/pion/stun/v3 v3.0.0 h1:4h1gwhWLWuZWOJIJR9s2ferRO+W3zA/b6ijOI6mKzUw=
 github.com/pion/stun/v3 v3.0.0/go.mod h1:HvCN8txt8mwi4FBvS3EmDghW6aQJ24T+y+1TKjB5jyU=
 github.com/pion/transport/v3 v3.0.7 h1:iRbMH05BzSNwhILHoBoAPxoB9xQgOaJk+591KC9P1o0=
 github.com/pion/transport/v3 v3.0.7/go.mod h1:YleKiTZ4vqNxVwh77Z0zytYi7rXHl7j6uPLGhhz9rwo=
-github.com/pion/turn/v4 v4.0.0 h1:qxplo3Rxa9Yg1xXDxxH8xaqcyGUtbHYw4QSCvmFWvhM=
-github.com/pion/turn/v4 v4.0.0/go.mod h1:MuPDkm15nYSklKpN8vWJ9W2M0PlyQZqYt1McGuxG7mA=
-github.com/pion/webrtc/v4 v4.1.1 h1:PMFPtLg1kpD2pVtun+LGUzA3k54JdFl87WO0Z1+HKug=
-github.com/pion/webrtc/v4 v4.1.1/go.mod h1:cgEGkcpxGkT6Di2ClBYO5lP9mFXbCfEOrkYUpjjCQO4=
+github.com/pion/turn/v4 v4.0.2 h1:ZqgQ3+MjP32ug30xAbD6Mn+/K4Sxi3SdNOTFf+7mpps=
+github.com/pion/turn/v4 v4.0.2/go.mod h1:pMMKP/ieNAG/fN5cZiN4SDuyKsXtNTr0ccN7IToA1zs=
+github.com/pion/webrtc/v4 v4.1.3 h1:YZ67Boj9X/hk190jJZ8+HFGQ6DqSZ/fYP3sLAZv7c3c=
+github.com/pion/webrtc/v4 v4.1.3/go.mod h1:rsq+zQ82ryfR9vbb0L1umPJ6Ogq7zm8mcn9fcGnxomM=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
@@ -117,8 +117,8 @@ github.com/yapingcat/gomedia/mpeg2 v0.0.0-20220617074658-94762898dc25/go.mod h1:
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.33.0 h1:IOBPskki6Lysi0lo9qQvbxiQ+FvsCC/YWOecCHAixus=
-golang.org/x/crypto v0.33.0/go.mod h1:bVdXmD7IV/4GdElGPozy6U7lWdRXA4qyRVGJV57uQ5M=
+golang.org/x/crypto v0.39.0 h1:SHs+kF4LP+f+p14esP5jAoDpHU8Gu/v9lFRK6IT5imM=
+golang.org/x/crypto v0.39.0/go.mod h1:L+Xg3Wf6HoL4Bn4238Z6ft6KfEpN0tJGo53AAPC632U=
 golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -126,8 +126,8 @@ golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
-golang.org/x/net v0.35.0 h1:T5GQRQb2y08kTAByq9L4/bz8cipCdA8FbRTXewonqY8=
-golang.org/x/net v0.35.0/go.mod h1:EglIi67kWsHKlRzzVMUD93VMSWGFOMSZgxFjparz1Qk=
+golang.org/x/net v0.41.0 h1:vBTly1HeNPEn3wtREYfy4GZ/NECgw2Cnl+nK6Nz3uvw=
+golang.org/x/net v0.41.0/go.mod h1:B/K4NNqkfmg07DQYrbwvSluqCJOOXwUjeb/5lOisjbA=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -144,15 +144,15 @@ golang.org/x/sys v0.0.0-20200926100807-9d91bd62050c/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201207223542-d4d67f95c62d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201214095126-aec9a390925b/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.30.0 h1:QjkSwP/36a20jFYWkSue1YwXzLmsV5Gfq7Eiy72C1uc=
-golang.org/x/sys v0.30.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/term v0.29.0 h1:L6pJp37ocefwRRtYPKSWOWzOtWSxVajvz2ldH/xi3iU=
-golang.org/x/term v0.29.0/go.mod h1:6bl4lRlvVuDgSf3179VpIxBF0o10JUpXWOnI7nErv7s=
+golang.org/x/sys v0.33.0 h1:q3i8TbbEz+JRD9ywIRlyRAQbM0qF7hu24q3teo2hbuw=
+golang.org/x/sys v0.33.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+golang.org/x/term v0.32.0 h1:DR4lr0TjUs3epypdhTOkMmuF5CDFJ/8pOnbzMZPQ7bg=
+golang.org/x/term v0.32.0/go.mod h1:uZG1FhGx848Sqfsq4/DlJr3xGGsYMu/L5GW4abiaEPQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.22.0 h1:bofq7m3/HAFvbF51jz3Q9wLg3jkvSPuiZu/pD1XwgtM=
-golang.org/x/text v0.22.0/go.mod h1:YRoo4H8PVmsu+E3Ou7cqLVH8oXWIHVoX0jqUWALQhfY=
+golang.org/x/text v0.26.0 h1:P42AVeLghgTYr4+xUnTRKDMqpar+PtX7KWuNQL21L8M=
+golang.org/x/text v0.26.0/go.mod h1:QK15LZJUUQVJxhz7wXgxSy/CJaTFjd0G+YLonydOVQA=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

trunk/3rdparty/srs-bench/srs/rtmp_test.go

@@ -102,7 +102,7 @@ func TestRtmpPublishPlay(t *testing.T) {
 	}
 }
 
-func TestRtmpPublish_RtcPlay(t *testing.T) {
+func TestRtmpPublish_RtcPlay_AVC(t *testing.T) {
 	ctx := logger.WithContext(context.Background())
 	ctx, cancel := context.WithTimeout(ctx, time.Duration(*srsTimeout)*time.Millisecond)
 
@@ -119,10 +119,11 @@ func TestRtmpPublish_RtcPlay(t *testing.T) {
 			return err
 		}
 
-		// Setup the RTC player.
+		// Setup the RTC player with AVC codec support.
 		var thePlayer *testPlayer
 		if thePlayer, err = newTestPlayer(registerMiniCodecs, func(play *testPlayer) error {
 			play.streamSuffix = streamSuffix
+			play.streamCodec = "h264"
 			var nnPlayReadRTP uint64
 			return play.Setup(*srsVnetClientIP, func(api *testWebRTCAPI) {
 				api.registry.Add(newRTPInterceptor(func(i *rtpInterceptor) {
@@ -234,7 +235,7 @@ func TestRtmpPublish_MultipleSequences(t *testing.T) {
 				}
 
 				// Ingore the duplicated sps/pps.
-				if IsAvccrEquals(previousAvccr, avccr) {
+				if isAvccrEquals(previousAvccr, avccr) {
 					return nil
 				}
 				previousAvccr = avccr
@@ -316,7 +317,7 @@ func TestRtmpPublish_MultipleSequences_RtcPlay(t *testing.T) {
 							return nn, attr, err
 						}
 
-						annexb, nalus, err := DemuxRtpSpsPps(payload[:nn])
+						annexb, nalus, err := demuxRtpSpsPps(payload[:nn])
 						if err != nil || len(nalus) == 0 ||
 							(nalus[0].NALUType != avc.NALUTypeSPS && nalus[0].NALUType != avc.NALUTypePPS) ||
 							bytes.Equal(annexb, previousSpsPps) {
@@ -640,3 +641,95 @@ func TestRtmpPublish_HttpFlvPlayNoVideo(t *testing.T) {
 		t.Errorf("err %+v", err)
 	}
 }
+
+// TestRtmpPublish_RtcPlay_HEVC tests HEVC support in RTMP to RTC pipeline (PR 4289)
+// This test publishes H.265 video via RTMP and plays it back via WebRTC with codec=hevc
+func TestRtmpPublish_RtcPlay_HEVC(t *testing.T) {
+	ctx := logger.WithContext(context.Background())
+	ctx, cancel := context.WithTimeout(ctx, time.Duration(*srsTimeout)*time.Millisecond)
+
+	var r0, r1 error
+	err := func() (err error) {
+		streamSuffix := fmt.Sprintf("rtmp-hevc-regression-%v-%v", os.Getpid(), rand.Int())
+		rtmpUrl := fmt.Sprintf("%v://%v%v-%v", srsSchema, *srsServer, *srsStream, streamSuffix)
+
+		// Publisher connect to a RTMP stream.
+		publisher := NewRTMPPublisher()
+		defer publisher.Close()
+
+		if err := publisher.Publish(ctx, rtmpUrl); err != nil {
+			return err
+		}
+
+		// Setup the RTC player with HEVC codec support.
+		var thePlayer *testPlayer
+		if thePlayer, err = newTestPlayer(registerHEVCCodecs, func(play *testPlayer) error {
+			play.streamSuffix = streamSuffix
+			play.streamCodec = "hevc"
+			var nnPlayReadRTP uint64
+			return play.Setup(*srsVnetClientIP, func(api *testWebRTCAPI) {
+				api.registry.Add(newRTPInterceptor(func(i *rtpInterceptor) {
+					i.rtpReader = func(payload []byte, attributes interceptor.Attributes) (int, interceptor.Attributes, error) {
+						nn, attr, err := i.nextRTPReader.Read(payload, attributes)
+						if err != nil {
+							return nn, attr, err
+						}
+
+						if nnPlayReadRTP++; nnPlayReadRTP >= uint64(*srsPlayOKPackets) {
+							cancel() // Completed.
+						}
+						logger.Tf(ctx, "Play RECV RTP #%v %vB", nnPlayReadRTP, nn)
+						return nn, attr, err
+					}
+				}))
+			})
+		}); err != nil {
+			return err
+		}
+		defer thePlayer.Close()
+
+		// Run publisher and players.
+		var wg sync.WaitGroup
+		defer wg.Wait()
+
+		var playerIceReady context.Context
+		playerIceReady, thePlayer.iceReadyCancel = context.WithCancel(ctx)
+
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			if r1 = thePlayer.Run(logger.WithContext(ctx), cancel); r1 != nil {
+				cancel()
+			}
+			logger.Tf(ctx, "player done")
+		}()
+
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+
+			// Wait for player ready.
+			select {
+			case <-ctx.Done():
+				return
+			case <-playerIceReady.Done():
+			}
+
+			publisher.onSendPacket = func(m *rtmp.Message) error {
+				time.Sleep(100 * time.Microsecond)
+				return nil
+			}
+			// Use H.265 file directly without ffmpeg transcoding, implementing new h265 demuxer
+			// in RTMPPublisher using pion pkg/media/h265reader with enhanced-RTMP fourcc 'hvc1'
+			if r0 = publisher.Ingest(ctx, *srsPublishVideoH265); r0 != nil {
+				cancel()
+			}
+			logger.Tf(ctx, "publisher done")
+		}()
+
+		return nil
+	}()
+	if err := filterTestError(ctx.Err(), err, r0, r1); err != nil {
+		t.Errorf("err %+v", err)
+	}
+}

trunk/3rdparty/srs-bench/srs/util.go

@@ -61,6 +61,7 @@ import (
 	"github.com/pion/transport/v3/vnet"
 	"github.com/pion/webrtc/v4"
 	"github.com/pion/webrtc/v4/pkg/media/h264reader"
+	"github.com/pion/webrtc/v4/pkg/media/h265reader"
 )
 
 var srsHttps *bool
@@ -80,6 +81,7 @@ var srsStream *string
 var srsLiveStream *string
 var srsPublishAudio *string
 var srsPublishVideo *string
+var srsPublishVideoH265 *string
 var srsPublishAvatar *string
 var srsPublishBBB *string
 var srsVnetClientIP *string
@@ -97,6 +99,7 @@ func prepareTest() (err error) {
 	srsPublishOKPackets = flag.Int("srs-publish-ok-packets", 3, "If send N RTP, recv N RTCP packets, it's ok, or fail")
 	srsPublishAudio = flag.String("srs-publish-audio", "avatar.ogg", "The audio file for publisher.")
 	srsPublishVideo = flag.String("srs-publish-video", "avatar.h264", "The video file for publisher.")
+	srsPublishVideoH265 = flag.String("srs-publish-video-h265", "avatar.h265", "The H.265 video file for publisher.")
 	srsPublishAvatar = flag.String("srs-publish-avatar", "avatar.flv", "The avatar file for publisher.")
 	srsPublishBBB = flag.String("srs-publish-bbb", "bbb.flv", "The bbb file for publisher.")
 	srsPublishVideoFps = flag.Int("srs-publish-video-fps", 25, "The video fps for publisher.")
@@ -143,6 +146,10 @@ func prepareTest() (err error) {
 		return err
 	}
 
+	if *srsPublishVideoH265, err = tryOpenFile(*srsPublishVideoH265); err != nil {
+		return err
+	}
+
 	if *srsPublishAvatar, err = tryOpenFile(*srsPublishAvatar); err != nil {
 		return err
 	}
@@ -633,16 +640,28 @@ func registerMiniCodecs(api *testWebRTCAPI) error {
 	v := api
 
 	if err := v.mediaEngine.RegisterCodec(webrtc.RTPCodecParameters{
-		RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeOpus, 48000, 2, "minptime=10;useinbandfec=1", nil},
-		PayloadType:        111,
+		RTPCodecCapability: webrtc.RTPCodecCapability{
+			MimeType: webrtc.MimeTypeOpus, ClockRate: 48000, Channels: 2,
+			SDPFmtpLine: "minptime=10;useinbandfec=1", RTCPFeedback: nil,
+		},
+		PayloadType: 111,
 	}, webrtc.RTPCodecTypeAudio); err != nil {
 		return err
 	}
 
-	videoRTCPFeedback := []webrtc.RTCPFeedback{{"goog-remb", ""}, {"ccm", "fir"}, {"nack", ""}, {"nack", "pli"}}
+	videoRTCPFeedback := []webrtc.RTCPFeedback{
+		{Type: "goog-remb", Parameter: ""},
+		{Type: "ccm", Parameter: "fir"},
+		{Type: "nack", Parameter: ""},
+		{Type: "nack", Parameter: "pli"},
+	}
 	if err := v.mediaEngine.RegisterCodec(webrtc.RTPCodecParameters{
-		RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeH264, 90000, 0, "level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f", videoRTCPFeedback},
-		PayloadType:        108,
+		RTPCodecCapability: webrtc.RTPCodecCapability{
+			MimeType: webrtc.MimeTypeH264, ClockRate: 90000, Channels: 0,
+			SDPFmtpLine:  "level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f",
+			RTCPFeedback: videoRTCPFeedback,
+		},
+		PayloadType: 108,
 	}, webrtc.RTPCodecTypeVideo); err != nil {
 		return err
 	}
@@ -656,16 +675,26 @@ func registerMiniCodecsWithoutNack(api *testWebRTCAPI) error {
 	v := api
 
 	if err := v.mediaEngine.RegisterCodec(webrtc.RTPCodecParameters{
-		RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeOpus, 48000, 2, "minptime=10;useinbandfec=1", nil},
-		PayloadType:        111,
+		RTPCodecCapability: webrtc.RTPCodecCapability{
+			MimeType: webrtc.MimeTypeOpus, ClockRate: 48000, Channels: 2,
+			SDPFmtpLine: "minptime=10;useinbandfec=1", RTCPFeedback: nil,
+		},
+		PayloadType: 111,
 	}, webrtc.RTPCodecTypeAudio); err != nil {
 		return err
 	}
 
-	videoRTCPFeedback := []webrtc.RTCPFeedback{{"goog-remb", ""}, {"ccm", "fir"}}
+	videoRTCPFeedback := []webrtc.RTCPFeedback{
+		{Type: "goog-remb", Parameter: ""},
+		{Type: "ccm", Parameter: "fir"},
+	}
 	if err := v.mediaEngine.RegisterCodec(webrtc.RTPCodecParameters{
-		RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeH264, 90000, 0, "level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f", videoRTCPFeedback},
-		PayloadType:        108,
+		RTPCodecCapability: webrtc.RTPCodecCapability{
+			MimeType: webrtc.MimeTypeH264, ClockRate: 90000, Channels: 0,
+			SDPFmtpLine:  "level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f",
+			RTCPFeedback: videoRTCPFeedback,
+		},
+		PayloadType: 108,
 	}, webrtc.RTPCodecTypeVideo); err != nil {
 		return err
 	}
@@ -680,17 +709,28 @@ func registerHEVCCodecs(api *testWebRTCAPI) error {
 
 	// Register Opus audio codec
 	if err := v.mediaEngine.RegisterCodec(webrtc.RTPCodecParameters{
-		RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeOpus, 48000, 2, "minptime=10;useinbandfec=1", nil},
-		PayloadType:        111,
+		RTPCodecCapability: webrtc.RTPCodecCapability{
+			MimeType: webrtc.MimeTypeOpus, ClockRate: 48000, Channels: 2,
+			SDPFmtpLine: "minptime=10;useinbandfec=1", RTCPFeedback: nil,
+		},
+		PayloadType: 111,
 	}, webrtc.RTPCodecTypeAudio); err != nil {
 		return err
 	}
 
 	// Register HEVC/H.265 video codec
-	videoRTCPFeedback := []webrtc.RTCPFeedback{{"goog-remb", ""}, {"ccm", "fir"}, {"nack", ""}, {"nack", "pli"}}
+	videoRTCPFeedback := []webrtc.RTCPFeedback{
+		{Type: "goog-remb", Parameter: ""},
+		{Type: "ccm", Parameter: "fir"},
+		{Type: "nack", Parameter: ""},
+		{Type: "nack", Parameter: "pli"},
+	}
 	if err := v.mediaEngine.RegisterCodec(webrtc.RTPCodecParameters{
-		RTPCodecCapability: webrtc.RTPCodecCapability{webrtc.MimeTypeH265, 90000, 0, "profile-id=1", videoRTCPFeedback},
-		PayloadType:        49, // Use payload type 49 for HEVC as mentioned in PR description
+		RTPCodecCapability: webrtc.RTPCodecCapability{
+			MimeType: webrtc.MimeTypeH265, ClockRate: 90000, Channels: 0,
+			SDPFmtpLine: "level-id=180;profile-id=1;tier-flag=0;tx-mode=SRST", RTCPFeedback: videoRTCPFeedback,
+		},
+		PayloadType: 49, // Use payload type 49 for HEVC as mentioned in PR description
 	}, webrtc.RTPCodecTypeVideo); err != nil {
 		return err
 	}
@@ -812,6 +852,8 @@ type testPlayer struct {
 	api *testWebRTCAPI
 	// Optional suffix for stream url.
 	streamSuffix string
+	// Optional codec for stream, e.g., "hevc", "h264".
+	streamCodec string
 	// Optional app/stream to play, use srsStream by default.
 	defaultStream string
 }
@@ -864,6 +906,13 @@ func (v *testPlayer) Run(ctx context.Context, cancel context.CancelFunc) error {
 	if v.streamSuffix != "" {
 		r = fmt.Sprintf("%v-%v", r, v.streamSuffix)
 	}
+	if v.streamCodec != "" {
+		if strings.Contains(r, "?") {
+			r = fmt.Sprintf("%v&codec=%v", r, v.streamCodec)
+		} else {
+			r = fmt.Sprintf("%v?codec=%v", r, v.streamCodec)
+		}
+	}
 	pli := time.Duration(*srsPlayPLI) * time.Millisecond
 	logger.Tf(ctx, "Run play url=%v", r)
 
@@ -1634,7 +1683,7 @@ func (v *RTMPPublisher) Publish(ctx context.Context, rtmpUrl string) error {
 	return v.client.Publish(ctx, rtmpUrl)
 }
 
-func (v *RTMPPublisher) Ingest(ctx context.Context, flvInput string) error {
+func (v *RTMPPublisher) Ingest(ctx context.Context, input string) error {
 	// If ctx is cancelled, close the RTMP transport.
 	var wg sync.WaitGroup
 	defer wg.Wait()
@@ -1649,8 +1698,16 @@ func (v *RTMPPublisher) Ingest(ctx context.Context, flvInput string) error {
 	}()
 
 	// Consume all packets.
-	logger.Tf(ctx, "Start to ingest %v", flvInput)
-	err := v.ingest(ctx, flvInput)
+	logger.Tf(ctx, "Start to ingest %v", input)
+
+	// Check file extension to determine format
+	var err error
+	if strings.HasSuffix(strings.ToLower(input), ".h265") {
+		err = v.ingestH265(ctx, input)
+	} else {
+		// Default to FLV format for H.264
+		err = v.ingestFLV(ctx, input)
+	}
 	if err == io.EOF {
 		return nil
 	}
@@ -1660,7 +1717,7 @@ func (v *RTMPPublisher) Ingest(ctx context.Context, flvInput string) error {
 	return err
 }
 
-func (v *RTMPPublisher) ingest(ctx context.Context, flvInput string) error {
+func (v *RTMPPublisher) ingestFLV(ctx context.Context, flvInput string) error {
 	p := v.client
 
 	fs, err := os.Open(flvInput)
@@ -1718,6 +1775,247 @@ func (v *RTMPPublisher) ingest(ctx context.Context, flvInput string) error {
 	return nil
 }
 
+func (v *RTMPPublisher) ingestH265(ctx context.Context, h265Input string) error {
+	p := v.client
+
+	fs, err := os.Open(h265Input)
+	if err != nil {
+		return err
+	}
+	defer fs.Close()
+	logger.Tf(ctx, "Open H.265 input %v", h265Input)
+
+	h265Reader, err := h265reader.NewReader(fs)
+	if err != nil {
+		return err
+	}
+
+	// Send sequence header first
+	var vps, sps, pps []byte
+	var timestamp uint64 = 0
+
+	// Read NALUs to find VPS, SPS, PPS
+	for {
+		nal, err := h265Reader.NextNAL()
+		if err != nil {
+			if err == io.EOF {
+				break
+			}
+			return err
+		}
+
+		if nal == nil {
+			break
+		}
+
+		// Extract parameter sets using pion constants
+		switch nal.NalUnitType {
+		case h265reader.NalUnitTypeVps: // VPS (32)
+			vps = nal.Data
+		case h265reader.NalUnitTypeSps: // SPS (33)
+			sps = nal.Data
+		case h265reader.NalUnitTypePps: // PPS (34)
+			pps = nal.Data
+		}
+
+		// Once we have all parameter sets, send sequence header
+		if len(vps) > 0 && len(sps) > 0 && len(pps) > 0 {
+			if err := v.sendH265SequenceHeader(p, vps, sps, pps, timestamp); err != nil {
+				return err
+			}
+			break
+		}
+	}
+
+	// Reset reader for actual frame data
+	fs.Seek(0, 0)
+	h265Reader, err = h265reader.NewReader(fs)
+	if err != nil {
+		return err
+	}
+
+	// Send video frames
+	frameCount := 0
+	for {
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		default:
+		}
+
+		nal, err := h265Reader.NextNAL()
+		if err != nil {
+			if err == io.EOF {
+				return nil
+			}
+			return err
+		}
+
+		if nal == nil {
+			return nil
+		}
+
+		// Skip parameter sets as they were already sent
+		if nal.NalUnitType == h265reader.NalUnitTypeVps || nal.NalUnitType == h265reader.NalUnitTypeSps || nal.NalUnitType == h265reader.NalUnitTypePps {
+			continue
+		}
+
+		// Send video frame - check for IDR and CRA frames (key frames)
+		isKeyFrame := (nal.NalUnitType >= h265reader.NalUnitTypeBlaWLp && nal.NalUnitType <= h265reader.NalUnitTypeCraNut)
+		if err := v.sendH265Frame(p, nal.Data, timestamp, isKeyFrame); err != nil {
+			return err
+		}
+
+		frameCount++
+		timestamp += 40 // 25fps = 40ms per frame
+
+		if v.onSendPacket != nil {
+			m := rtmp.NewStreamMessage(p.streamID)
+			m.MessageType = rtmp.MessageTypeVideo
+			m.Timestamp = timestamp
+			m.Payload = nal.Data
+			if err = v.onSendPacket(m); err != nil {
+				return err
+			}
+		}
+	}
+}
+
+func (v *RTMPPublisher) sendH265SequenceHeader(p *RTMPClient, vps, sps, pps []byte, timestamp uint64) error {
+	// Create HEVC sequence header using enhanced-RTMP format
+	// Format: [IsExHeader | FrameType | PacketType] [fourcc 'hvc1'] [HEVCDecoderConfigurationRecord]
+	// @see: https://veovera.org/docs/enhanced/enhanced-rtmp-v1.pdf, page 9
+
+	const flvIsExHeader = 0x80
+	const videoAvcFrameTypeKeyFrame = 1
+	const videoHEVCFrameTraitPacketTypeSequenceStart = 0
+
+	// IsExHeader | FrameType | PacketType
+	frameTypeAndPacket := byte(flvIsExHeader | (videoAvcFrameTypeKeyFrame << 4) | videoHEVCFrameTraitPacketTypeSequenceStart)
+
+	// Enhanced-RTMP fourcc 'hvc1' for HEVC (0x68766331)
+	fourcc := []byte{'h', 'v', 'c', '1'}
+
+	// Create proper HEVCDecoderConfigurationRecord
+	hvcc := v.createHVCC(vps, sps, pps)
+
+	// Build enhanced-RTMP packet
+	var payload []byte
+	payload = append(payload, frameTypeAndPacket)
+	payload = append(payload, fourcc...)
+	payload = append(payload, hvcc...)
+
+	m := rtmp.NewStreamMessage(p.streamID)
+	m.MessageType = rtmp.MessageTypeVideo
+	m.Timestamp = timestamp
+	m.Payload = payload
+
+	return p.proto.WriteMessage(m)
+}
+
+func (v *RTMPPublisher) createHVCC(vps, sps, pps []byte) []byte {
+	// Create HEVCDecoderConfigurationRecord based on SRS format
+	// @see: trunk/src/protocol/srs_protocol_raw_avc.cpp mux_sequence_header
+
+	var hvcc []byte
+
+	// configuration_version (1 byte) - must be 1
+	hvcc = append(hvcc, 0x01)
+
+	// general_profile_space (2 bits) + general_tier_flag (1 bit) + general_profile_idc (5 bits)
+	hvcc = append(hvcc, 0x01) // simplified: profile_space=0, tier_flag=0, profile_idc=1
+
+	// general_profile_compatibility_flags (4 bytes)
+	hvcc = append(hvcc, 0x60, 0x00, 0x00, 0x00)
+
+	// general_constraint_indicator_flags (6 bytes)
+	hvcc = append(hvcc, 0x90, 0x00, 0x00, 0x00, 0x00, 0x00)
+
+	// general_level_idc (1 byte)
+	hvcc = append(hvcc, 0x5d) // Level 3.1
+
+	// min_spatial_segmentation_idc (12 bits) + reserved (4 bits)
+	hvcc = append(hvcc, 0xf0, 0x00)
+
+	// parallelismType (2 bits) + reserved (6 bits)
+	hvcc = append(hvcc, 0xfc)
+
+	// chromaFormat (2 bits) + reserved (6 bits)
+	hvcc = append(hvcc, 0xfd)
+
+	// bitDepthLumaMinus8 (3 bits) + reserved (5 bits)
+	hvcc = append(hvcc, 0xf8)
+
+	// bitDepthChromaMinus8 (3 bits) + reserved (5 bits)
+	hvcc = append(hvcc, 0xf8)
+
+	// avgFrameRate (2 bytes)
+	hvcc = append(hvcc, 0x00, 0x00)
+
+	// constantFrameRate (2 bits) + numTemporalLayers (3 bits) + temporalIdNested (1 bit) + lengthSizeMinusOne (2 bits)
+	hvcc = append(hvcc, 0x0f) // lengthSizeMinusOne = 3 (4-byte length)
+
+	// numOfArrays (1 byte) - we have 3 arrays: VPS, SPS, PPS
+	hvcc = append(hvcc, 0x03)
+
+	// VPS array
+	hvcc = append(hvcc, 0x20)                              // array_completeness=0, reserved=0, NAL_unit_type=32 (VPS)
+	hvcc = append(hvcc, 0x00, 0x01)                        // numNalus = 1
+	hvcc = append(hvcc, byte(len(vps)>>8), byte(len(vps))) // nalUnitLength
+	hvcc = append(hvcc, vps...)
+
+	// SPS array
+	hvcc = append(hvcc, 0x21)                              // array_completeness=0, reserved=0, NAL_unit_type=33 (SPS)
+	hvcc = append(hvcc, 0x00, 0x01)                        // numNalus = 1
+	hvcc = append(hvcc, byte(len(sps)>>8), byte(len(sps))) // nalUnitLength
+	hvcc = append(hvcc, sps...)
+
+	// PPS array
+	hvcc = append(hvcc, 0x22)                              // array_completeness=0, reserved=0, NAL_unit_type=34 (PPS)
+	hvcc = append(hvcc, 0x00, 0x01)                        // numNalus = 1
+	hvcc = append(hvcc, byte(len(pps)>>8), byte(len(pps))) // nalUnitLength
+	hvcc = append(hvcc, pps...)
+
+	return hvcc
+}
+
+func (v *RTMPPublisher) sendH265Frame(p *RTMPClient, nalData []byte, timestamp uint64, isKeyFrame bool) error {
+	// Create HEVC frame packet using enhanced-RTMP format
+	// Format: [IsExHeader | FrameType | PacketType] [fourcc 'hvc1'] [NALU data]
+	// @see: https://veovera.org/docs/enhanced/enhanced-rtmp-v1.pdf, page 9
+
+	const flvIsExHeader = 0x80
+	const videoAvcFrameTypeKeyFrame = 1
+	const videoAvcFrameTypeInterFrame = 2
+	const videoHEVCFrameTraitPacketTypeCodedFramesX = 3
+
+	var frameType byte = videoAvcFrameTypeInterFrame
+	if isKeyFrame {
+		frameType = videoAvcFrameTypeKeyFrame
+	}
+
+	// IsExHeader | FrameType | PacketType
+	frameTypeAndPacket := byte(flvIsExHeader | (frameType << 4) | videoHEVCFrameTraitPacketTypeCodedFramesX)
+
+	// Enhanced-RTMP fourcc 'hvc1' for HEVC (0x68766331)
+	fourcc := []byte{'h', 'v', 'c', '1'}
+
+	var payload []byte
+	payload = append(payload, frameTypeAndPacket)
+	payload = append(payload, fourcc...)
+
+	// Add NALU length and data (IBMF format)
+	payload = append(payload, byte(len(nalData)>>24), byte(len(nalData)>>16), byte(len(nalData)>>8), byte(len(nalData)))
+	payload = append(payload, nalData...)
+
+	m := rtmp.NewStreamMessage(p.streamID)
+	m.MessageType = rtmp.MessageTypeVideo
+	m.Timestamp = timestamp
+	m.Payload = payload
+
+	return p.proto.WriteMessage(m)
+}
+
 type RTMPPlayer struct {
 	// Transport.
 	client *RTMPClient
@@ -1922,7 +2220,7 @@ func (v *FLVPlayer) consume(ctx context.Context) (err error) {
 	}
 }
 
-func IsAvccrEquals(a, b *avc.AVCDecoderConfigurationRecord) bool {
+func isAvccrEquals(a, b *avc.AVCDecoderConfigurationRecord) bool {
 	if a == nil || b == nil {
 		return false
 	}
@@ -1936,13 +2234,13 @@ func IsAvccrEquals(a, b *avc.AVCDecoderConfigurationRecord) bool {
 	}
 
 	for i := 0; i < len(a.SequenceParameterSetNALUnits); i++ {
-		if !IsNALUEquals(a.SequenceParameterSetNALUnits[i], b.SequenceParameterSetNALUnits[i]) {
+		if !isNALUEquals(a.SequenceParameterSetNALUnits[i], b.SequenceParameterSetNALUnits[i]) {
 			return false
 		}
 	}
 
 	for i := 0; i < len(a.PictureParameterSetNALUnits); i++ {
-		if !IsNALUEquals(a.PictureParameterSetNALUnits[i], b.PictureParameterSetNALUnits[i]) {
+		if !isNALUEquals(a.PictureParameterSetNALUnits[i], b.PictureParameterSetNALUnits[i]) {
 			return false
 		}
 	}
@@ -1950,7 +2248,7 @@ func IsAvccrEquals(a, b *avc.AVCDecoderConfigurationRecord) bool {
 	return true
 }
 
-func IsNALUEquals(a, b *avc.NALU) bool {
+func isNALUEquals(a, b *avc.NALU) bool {
 	if a == nil || b == nil {
 		return false
 	}
@@ -1962,7 +2260,7 @@ func IsNALUEquals(a, b *avc.NALU) bool {
 	return bytes.Equal(a.Data, b.Data)
 }
 
-func DemuxRtpSpsPps(payload []byte) ([]byte, []*avc.NALU, error) {
+func demuxRtpSpsPps(payload []byte) ([]byte, []*avc.NALU, error) {
 	// Parse RTP packet.
 	pkt := rtp.Packet{}
 	if err := pkt.Unmarshal(payload); err != nil {

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/.golangci.yml

@@ -19,23 +19,42 @@ linters-settings:
             recommendations:
               - errors
   forbidigo:
+    analyze-types: true
     forbid:
       - ^fmt.Print(f|ln)?$
       - ^log.(Panic|Fatal|Print)(f|ln)?$
       - ^os.Exit$
       - ^panic$
       - ^print(ln)?$
+      - p: ^testing.T.(Error|Errorf|Fatal|Fatalf|Fail|FailNow)$
+        pkg: ^testing$
+        msg: "use testify/assert instead"
+  varnamelen:
+    max-distance: 12
+    min-name-length: 2
+    ignore-type-assert-ok: true
+    ignore-map-index-ok: true
+    ignore-chan-recv-ok: true
+    ignore-decls:
+      - i int
+      - n int
+      - w io.Writer
+      - r io.Reader
+      - b []byte
 
 linters:
   enable:
     - asciicheck       # Simple linter to check that your code does not contain non-ASCII identifiers
     - bidichk          # Checks for dangerous unicode character sequences
     - bodyclose        # checks whether HTTP response body is closed successfully
+    - containedctx     # containedctx is a linter that detects struct contained context.Context field
     - contextcheck     # check the function whether use a non-inherited context
+    - cyclop           # checks function and package cyclomatic complexity
     - decorder         # check declaration order and count of types, constants, variables and functions
     - dogsled          # Checks assignments with too many blank identifiers (e.g. x, _, _, _, := f())
     - dupl             # Tool for code clone detection
     - durationcheck    # check for two durations multiplied together
+    - err113           # Golang linter to check the errors handling expressions
     - errcheck         # Errcheck is a program for checking for unchecked errors in go programs. These unchecked errors can be critical bugs in some cases
     - errchkjson       # Checks types passed to the json encoding functions. Reports unsupported types and optionally reports occations, where the check for the returned error can be omitted.
     - errname          # Checks that sentinel errors are prefixed with the `Err` and error types are suffixed with the `Error`.
@@ -46,18 +65,17 @@ linters:
     - forcetypeassert  # finds forced type assertions
     - gci              # Gci control golang package import order and make it always deterministic.
     - gochecknoglobals # Checks that no globals are present in Go code
-    - gochecknoinits   # Checks that no init functions are present in Go code
     - gocognit         # Computes and checks the cognitive complexity of functions
     - goconst          # Finds repeated strings that could be replaced by a constant
     - gocritic         # The most opinionated Go source code linter
+    - gocyclo          # Computes and checks the cyclomatic complexity of functions
+    - godot            # Check if comments end in a period
     - godox            # Tool for detection of FIXME, TODO and other comment keywords
-    - err113           # Golang linter to check the errors handling expressions
     - gofmt            # Gofmt checks whether code was gofmt-ed. By default this tool runs with -s option to check for code simplification
     - gofumpt          # Gofumpt checks whether code was gofumpt-ed.
     - goheader         # Checks is file header matches to pattern
     - goimports        # Goimports does everything that gofmt does. Additionally it checks unused imports
     - gomoddirectives  # Manage the use of 'replace', 'retract', and 'excludes' directives in go.mod.
-    - gomodguard       # Allow and block list linter for direct Go module dependencies. This is different from depguard where there are different block types for example version constraints and module recommendations.
     - goprintffuncname # Checks that printf-like functions are named with `f` at the end
     - gosec            # Inspects source code for security problems
     - gosimple         # Linter for Go source code that specializes in simplifying a code
@@ -65,9 +83,15 @@ linters:
     - grouper          # An analyzer to analyze expression groups.
     - importas         # Enforces consistent import aliases
     - ineffassign      # Detects when assignments to existing variables are not used
+    - lll              # Reports long lines
+    - maintidx         # maintidx measures the maintainability index of each function.
+    - makezero         # Finds slice declarations with non-zero initial length
     - misspell         # Finds commonly misspelled English words in comments
+    - nakedret         # Finds naked returns in functions greater than a specified function length
+    - nestif           # Reports deeply nested if statements
     - nilerr           # Finds the code that returns nil even if it checks that the error is not nil.
     - nilnil           # Checks that there is no simultaneous return of `nil` error and an invalid value.
+    - nlreturn         # nlreturn checks for a new line before return and branch statements to increase code clarity
     - noctx            # noctx finds sending http request without context.Context
     - predeclared      # find code that shadows one of Go's predeclared identifiers
     - revive           # golint replacement, finds style mistakes
@@ -75,28 +99,22 @@ linters:
     - stylecheck       # Stylecheck is a replacement for golint
     - tagliatelle      # Checks the struct tags.
     - tenv             # tenv is analyzer that detects using os.Setenv instead of t.Setenv since Go1.17
-    - tparallel        # tparallel detects inappropriate usage of t.Parallel() method in your Go test codes
+    - thelper          # thelper detects golang test helpers without t.Helper() call and checks the consistency of test helpers
     - typecheck        # Like the front-end of a Go compiler, parses and type-checks Go code
     - unconvert        # Remove unnecessary type conversions
     - unparam          # Reports unused function parameters
     - unused           # Checks Go code for unused constants, variables, functions and types
+    - varnamelen       # checks that the length of a variable's name matches its scope
     - wastedassign     # wastedassign finds wasted assignment statements
     - whitespace       # Tool for detection of leading and trailing whitespace
   disable:
     - depguard         # Go linter that checks if package imports are in a list of acceptable packages
-    - containedctx     # containedctx is a linter that detects struct contained context.Context field
-    - cyclop           # checks function and package cyclomatic complexity
     - funlen           # Tool for detection of long functions
-    - gocyclo          # Computes and checks the cyclomatic complexity of functions
-    - godot            # Check if comments end in a period
-    - gomnd            # An analyzer to detect magic numbers.
+    - gochecknoinits   # Checks that no init functions are present in Go code
+    - gomodguard       # Allow and block list linter for direct Go module dependencies. This is different from depguard where there are different block types for example version constraints and module recommendations.
+    - interfacebloat   # A linter that checks length of interface.
     - ireturn          # Accept Interfaces, Return Concrete Types
-    - lll              # Reports long lines
-    - maintidx         # maintidx measures the maintainability index of each function.
-    - makezero         # Finds slice declarations with non-zero initial length
-    - nakedret         # Finds naked returns in functions greater than a specified function length
-    - nestif           # Reports deeply nested if statements
-    - nlreturn         # nlreturn checks for a new line before return and branch statements to increase code clarity
+    - mnd              # An analyzer to detect magic numbers
     - nolintlint       # Reports ill-formed or insufficient nolint directives
     - paralleltest     # paralleltest detects missing usage of t.Parallel() method in your Go test
     - prealloc         # Finds slice declarations that could potentially be preallocated
@@ -104,8 +122,7 @@ linters:
     - rowserrcheck     # checks whether Err of rows is checked successfully
     - sqlclosecheck    # Checks that sql.Rows and sql.Stmt are closed.
     - testpackage      # linter that makes you use a separate _test package
-    - thelper          # thelper detects golang test helpers without t.Helper() call and checks the consistency of test helpers
-    - varnamelen       # checks that the length of a variable's name matches its scope
+    - tparallel        # tparallel detects inappropriate usage of t.Parallel() method in your Go test codes
     - wrapcheck        # Checks that errors returned from external packages are wrapped
     - wsl              # Whitespace Linter - Forces you to use empty lines!
 
@@ -114,9 +131,12 @@ issues:
   exclude-dirs-use-default: false
   exclude-rules:
     # Allow complex tests and examples, better to be self contained
-    - path: (examples|main\.go|_test\.go)
+    - path: (examples|main\.go)
       linters:
+        - gocognit
         - forbidigo
+    - path: _test\.go
+      linters:
         - gocognit
 
     # Allow forbidden identifiers in CLI commands

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/README.md

@@ -3,10 +3,10 @@
   Pion Interceptor
   <br>
 </h1>
-<h4 align="center">RTCP and RTCP processors for building real time communications</h4>
+<h4 align="center">RTP and RTCP processors for building real time communications</h4>
 <p align="center">
   <a href="https://pion.ly"><img src="https://img.shields.io/badge/pion-interceptor-gray.svg?longCache=true&colorB=brightgreen" alt="Pion Interceptor"></a>
-  <a href="https://pion.ly/slack"><img src="https://img.shields.io/badge/join-us%20on%20slack-gray.svg?longCache=true&logo=slack&colorB=brightgreen" alt="Slack Widget"></a>
+  <a href="https://discord.gg/PngbdqpFbt"><img src="https://img.shields.io/badge/join-us%20on%20discord-gray.svg?longCache=true&logo=discord&colorB=brightblue" alt="join us on Discord"></a> <a href="https://bsky.app/profile/pion.ly"><img src="https://img.shields.io/badge/follow-us%20on%20bluesky-gray.svg?longCache=true&logo=bluesky&colorB=brightblue" alt="Follow us on Bluesky"></a>
   <br>
   <img alt="GitHub Workflow Status" src="https://img.shields.io/github/actions/workflow/status/pion/interceptor/test.yaml">
   <a href="https://pkg.go.dev/github.com/pion/interceptor"><img src="https://pkg.go.dev/badge/github.com/pion/interceptor.svg" alt="Go Reference"></a>
@@ -36,12 +36,12 @@ by anyone. With the following tenets in mind.
 * [Google Congestion Control](https://github.com/pion/interceptor/tree/master/pkg/gcc)
 * [Stats](https://github.com/pion/interceptor/tree/master/pkg/stats) A [webrtc-stats](https://www.w3.org/TR/webrtc-stats/) compliant statistics generation
 * [Interval PLI](https://github.com/pion/interceptor/tree/master/pkg/intervalpli) Generate PLI on a interval. Useful when no decoder is available.
+* [FlexFec](https://github.com/pion/interceptor/tree/master/pkg/flexfec) – [FlexFEC-03](https://datatracker.ietf.org/doc/html/draft-ietf-payload-flexible-fec-scheme-03) encoder implementation
 
 ### Planned Interceptors
 * Bandwidth Estimation
   - [NADA](https://tools.ietf.org/html/rfc8698)
 * JitterBuffer, re-order packets and wait for arrival
-* [FlexFec](https://tools.ietf.org/html/draft-ietf-payload-flexible-fec-scheme-20)
 * [RTCP Feedback for Congestion Control](https://datatracker.ietf.org/doc/html/rfc8888) the standardized alternative to TWCC.
 
 ### Interceptor Public API
@@ -70,9 +70,9 @@ You should also look in [pion/webrtc](https://github.com/pion/webrtc) for real w
 The library is used as a part of our WebRTC implementation. Please refer to that [roadmap](https://github.com/pion/webrtc/issues/9) to track our major milestones.
 
 ### Community
-Pion has an active community on the [Slack](https://pion.ly/slack).
+Pion has an active community on the [Discord](https://discord.gg/PngbdqpFbt).
 
-Follow the [Pion Twitter](https://twitter.com/_pion) for project updates and important WebRTC news.
+Follow the [Pion Bluesky](https://bsky.app/profile/pion.ly) or [Pion Twitter](https://twitter.com/_pion) for project updates and important WebRTC news.
 
 We are always looking to support **your projects**. Please reach out if you have something to build!
 If you need commercial support or don't want to use public methods you can contact us at [team@pion.ly](mailto:team@pion.ly)

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/attributes.go

@@ -19,7 +19,7 @@ const (
 
 var errInvalidType = errors.New("found value of invalid type in attributes map")
 
-// Attributes are a generic key/value store used by interceptors
+// Attributes are a generic key/value store used by interceptors.
 type Attributes map[interface{}]interface{}
 
 // Get returns the attribute associated with key.
@@ -39,6 +39,7 @@ func (a Attributes) GetRTPHeader(raw []byte) (*rtp.Header, error) {
 		if header, ok := val.(*rtp.Header); ok {
 			return header, nil
 		}
+
 		return nil, errInvalidType
 	}
 	header := &rtp.Header{}
@@ -46,6 +47,7 @@ func (a Attributes) GetRTPHeader(raw []byte) (*rtp.Header, error) {
 		return nil, err
 	}
 	a[rtpHeaderKey] = header
+
 	return header, nil
 }
 
@@ -57,6 +59,7 @@ func (a Attributes) GetRTCPPackets(raw []byte) ([]rtcp.Packet, error) {
 		if packets, ok := val.([]rtcp.Packet); ok {
 			return packets, nil
 		}
+
 		return nil, errInvalidType
 	}
 	pkts, err := rtcp.Unmarshal(raw)
@@ -64,5 +67,6 @@ func (a Attributes) GetRTCPPackets(raw []byte) ([]rtcp.Packet, error) {
 		return nil, err
 	}
 	a[rtcpPacketsKey] = pkts
+
 	return pkts, nil
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/chain.go

@@ -50,7 +50,8 @@ func (i *Chain) UnbindLocalStream(ctx *StreamInfo) {
 	}
 }
 
-// BindRemoteStream lets you modify any incoming RTP packets. It is called once for per RemoteStream. The returned method
+// BindRemoteStream lets you modify any incoming RTP packets.
+// It is called once for per RemoteStream. The returned method
 // will be called once per rtp packet.
 func (i *Chain) BindRemoteStream(ctx *StreamInfo, reader RTPReader) RTPReader {
 	for _, interceptor := range i.interceptors {

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/errors.go

@@ -18,6 +18,7 @@ func flattenErrs(errs []error) error {
 	if len(errs2) == 0 {
 		return nil
 	}
+
 	return multiError(errs2)
 }
 
@@ -50,5 +51,6 @@ func (me multiError) Is(err error) bool {
 			}
 		}
 	}
+
 	return false
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/interceptor.go

@@ -12,7 +12,7 @@ import (
 	"github.com/pion/rtp"
 )
 
-// Factory provides an interface for constructing interceptors
+// Factory provides an interface for constructing interceptors.
 type Factory interface {
 	NewInterceptor(id string) (Interceptor, error)
 }
@@ -35,7 +35,8 @@ type Interceptor interface {
 	// UnbindLocalStream is called when the Stream is removed. It can be used to clean up any data related to that track.
 	UnbindLocalStream(info *StreamInfo)
 
-	// BindRemoteStream lets you modify any incoming RTP packets. It is called once for per RemoteStream. The returned method
+	// BindRemoteStream lets you modify any incoming RTP packets.
+	// It is called once for per RemoteStream. The returned method
 	// will be called once per rtp packet.
 	BindRemoteStream(info *StreamInfo, reader RTPReader) RTPReader
 
@@ -69,34 +70,34 @@ type RTCPReader interface {
 	Read([]byte, Attributes) (int, Attributes, error)
 }
 
-// RTPWriterFunc is an adapter for RTPWrite interface
+// RTPWriterFunc is an adapter for RTPWrite interface.
 type RTPWriterFunc func(header *rtp.Header, payload []byte, attributes Attributes) (int, error)
 
-// RTPReaderFunc is an adapter for RTPReader interface
+// RTPReaderFunc is an adapter for RTPReader interface.
 type RTPReaderFunc func([]byte, Attributes) (int, Attributes, error)
 
-// RTCPWriterFunc is an adapter for RTCPWriter interface
+// RTCPWriterFunc is an adapter for RTCPWriter interface.
 type RTCPWriterFunc func(pkts []rtcp.Packet, attributes Attributes) (int, error)
 
-// RTCPReaderFunc is an adapter for RTCPReader interface
+// RTCPReaderFunc is an adapter for RTCPReader interface.
 type RTCPReaderFunc func([]byte, Attributes) (int, Attributes, error)
 
-// Write a rtp packet
+// Write a rtp packet.
 func (f RTPWriterFunc) Write(header *rtp.Header, payload []byte, attributes Attributes) (int, error) {
 	return f(header, payload, attributes)
 }
 
-// Read a rtp packet
+// Read a rtp packet.
 func (f RTPReaderFunc) Read(b []byte, a Attributes) (int, Attributes, error) {
 	return f(b, a)
 }
 
-// Write a batch of rtcp packets
+// Write a batch of rtcp packets.
 func (f RTCPWriterFunc) Write(pkts []rtcp.Packet, attributes Attributes) (int, error) {
 	return f(pkts, attributes)
 }
 
-// Read a batch of rtcp packets
+// Read a batch of rtcp packets.
 func (f RTCPReaderFunc) Read(b []byte, a Attributes) (int, Attributes, error) {
 	return f(b, a)
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/internal/ntp/ntp.go

@@ -9,7 +9,7 @@ import (
 	"time"
 )
 
-// ToNTP converts a time.Time oboject to an uint64 NTP timestamp
+// ToNTP converts a time.Time oboject to an uint64 NTP timestamp.
 func ToNTP(t time.Time) uint64 {
 	// seconds since 1st January 1900
 	s := (float64(t.UnixNano()) / 1000000000) + 2208988800
@@ -17,14 +17,31 @@ func ToNTP(t time.Time) uint64 {
 	// higher 32 bits are the integer part, lower 32 bits are the fractional part
 	integerPart := uint32(s)
 	fractionalPart := uint32((s - float64(integerPart)) * 0xFFFFFFFF)
-	return uint64(integerPart)<<32 | uint64(fractionalPart)
+
+	return uint64(integerPart)<<32 | uint64(fractionalPart) //nolint:gosec // G115
 }
 
-// ToTime converts a uint64 NTP timestamps to a time.Time object
+// ToNTP32 converts a time.Time object to a uint32 NTP timestamp.
+func ToNTP32(t time.Time) uint32 {
+	return uint32(ToNTP(t) >> 16) //nolint:gosec // G115
+}
+
+// ToTime converts a uint64 NTP timestamps to a time.Time object.
 func ToTime(t uint64) time.Time {
 	seconds := (t & 0xFFFFFFFF00000000) >> 32
 	fractional := float64(t&0x00000000FFFFFFFF) / float64(0xFFFFFFFF)
+	//nolint:gosec // G115
 	d := time.Duration(seconds)*time.Second + time.Duration(fractional*1e9)*time.Nanosecond
 
 	return time.Unix(0, 0).Add(-2208988800 * time.Second).Add(d)
 }
+
+// ToTime32 converts a uint32 NTP timestamp to a time.Time object, using the
+// highest 16 bit of the reference to recover the lost bits. The low 16 bits are
+// not recovered.
+func ToTime32(t uint32, reference time.Time) time.Time {
+	referenceNTP := ToNTP(reference) & 0xFFFF000000000000
+	tu64 := ((uint64(t) << 16) & 0x0000FFFFFFFF0000) | referenceNTP
+
+	return ToTime(tu64)
+}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/internal/rtpbuffer/errors.go

@@ -0,0 +1,16 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+package rtpbuffer
+
+import "errors"
+
+// ErrInvalidSize is returned by newReceiveLog/newRTPBuffer, when an incorrect buffer size is supplied.
+var ErrInvalidSize = errors.New("invalid buffer size")
+
+var (
+	errPacketReleased          = errors.New("could not retain packet, already released")
+	errFailedToCastHeaderPool  = errors.New("could not access header pool, failed cast")
+	errFailedToCastPayloadPool = errors.New("could not access payload pool, failed cast")
+	errPaddingOverflow         = errors.New("padding size exceeds payload size")
+)

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/internal/rtpbuffer/packet_factory.go

@@ -0,0 +1,149 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+package rtpbuffer
+
+import (
+	"encoding/binary"
+	"io"
+	"sync"
+
+	"github.com/pion/rtp"
+)
+
+const rtxSsrcByteLength = 2
+
+// PacketFactory allows custom logic around the handle of RTP Packets before they added to the RTPBuffer.
+// The NoOpPacketFactory doesn't copy packets, while the RetainablePacket will take a copy before adding.
+type PacketFactory interface {
+	NewPacket(header *rtp.Header, payload []byte, rtxSsrc uint32, rtxPayloadType uint8) (*RetainablePacket, error)
+}
+
+// PacketFactoryCopy is PacketFactory that takes a copy of packets when added to the RTPBuffer.
+type PacketFactoryCopy struct {
+	headerPool   *sync.Pool
+	payloadPool  *sync.Pool
+	rtxSequencer rtp.Sequencer
+}
+
+// NewPacketFactoryCopy constructs a PacketFactory that takes a copy of packets when added to the RTPBuffer.
+func NewPacketFactoryCopy() *PacketFactoryCopy {
+	return &PacketFactoryCopy{
+		headerPool: &sync.Pool{
+			New: func() interface{} {
+				return &rtp.Header{}
+			},
+		},
+		payloadPool: &sync.Pool{
+			New: func() interface{} {
+				buf := make([]byte, maxPayloadLen)
+
+				return &buf
+			},
+		},
+		rtxSequencer: rtp.NewRandomSequencer(),
+	}
+}
+
+// NewPacket constructs a new RetainablePacket that can be added to the RTPBuffer.
+//
+//nolint:cyclop
+func (m *PacketFactoryCopy) NewPacket(
+	header *rtp.Header, payload []byte, rtxSsrc uint32, rtxPayloadType uint8,
+) (*RetainablePacket, error) {
+	if len(payload) > maxPayloadLen {
+		return nil, io.ErrShortBuffer
+	}
+
+	retainablePacket := &RetainablePacket{
+		onRelease:      m.releasePacket,
+		sequenceNumber: header.SequenceNumber,
+		// new packets have retain count of 1
+		count: 1,
+	}
+
+	var ok bool
+	retainablePacket.header, ok = m.headerPool.Get().(*rtp.Header)
+	if !ok {
+		return nil, errFailedToCastHeaderPool
+	}
+
+	*retainablePacket.header = header.Clone()
+
+	if payload != nil {
+		retainablePacket.buffer, ok = m.payloadPool.Get().(*[]byte)
+		if !ok {
+			return nil, errFailedToCastPayloadPool
+		}
+		if rtxSsrc != 0 && rtxPayloadType != 0 {
+			size := copy((*retainablePacket.buffer)[rtxSsrcByteLength:], payload)
+			retainablePacket.payload = (*retainablePacket.buffer)[:size+rtxSsrcByteLength]
+		} else {
+			size := copy(*retainablePacket.buffer, payload)
+			retainablePacket.payload = (*retainablePacket.buffer)[:size]
+		}
+	}
+
+	if rtxSsrc != 0 && rtxPayloadType != 0 { //nolint:nestif
+		if payload == nil {
+			retainablePacket.buffer, ok = m.payloadPool.Get().(*[]byte)
+			if !ok {
+				return nil, errFailedToCastPayloadPool
+			}
+			retainablePacket.payload = (*retainablePacket.buffer)[:rtxSsrcByteLength]
+		}
+		// Write the original sequence number at the beginning of the payload.
+		binary.BigEndian.PutUint16(retainablePacket.payload, retainablePacket.header.SequenceNumber)
+
+		// Rewrite the SSRC.
+		retainablePacket.header.SSRC = rtxSsrc
+		// Rewrite the payload type.
+		retainablePacket.header.PayloadType = rtxPayloadType
+		// Rewrite the sequence number.
+		retainablePacket.header.SequenceNumber = m.rtxSequencer.NextSequenceNumber()
+		// Remove padding if present.
+		if retainablePacket.header.Padding {
+			// Older versions of pion/rtp didn't have the Header.PaddingSize field and as a workaround
+			// users had to add padding to the payload. We need to handle this case here.
+			if retainablePacket.header.PaddingSize == 0 && len(retainablePacket.payload) > 0 {
+				paddingLength := int(retainablePacket.payload[len(retainablePacket.payload)-1])
+				if paddingLength > len(retainablePacket.payload) {
+					return nil, errPaddingOverflow
+				}
+				retainablePacket.payload = (*retainablePacket.buffer)[:len(retainablePacket.payload)-paddingLength]
+			}
+
+			retainablePacket.header.Padding = false
+			retainablePacket.header.PaddingSize = 0
+		}
+	}
+
+	return retainablePacket, nil
+}
+
+func (m *PacketFactoryCopy) releasePacket(header *rtp.Header, payload *[]byte) {
+	m.headerPool.Put(header)
+	if payload != nil {
+		m.payloadPool.Put(payload)
+	}
+}
+
+// PacketFactoryNoOp is a PacketFactory implementation that doesn't copy packets.
+type PacketFactoryNoOp struct{}
+
+// NewPacket constructs a new RetainablePacket that can be added to the RTPBuffer.
+func (f *PacketFactoryNoOp) NewPacket(
+	header *rtp.Header, payload []byte, _ uint32, _ uint8,
+) (*RetainablePacket, error) {
+	return &RetainablePacket{
+		onRelease:      f.releasePacket,
+		count:          1,
+		header:         header,
+		payload:        payload,
+		sequenceNumber: header.SequenceNumber,
+	}, nil
+}
+
+func (f *PacketFactoryNoOp) releasePacket(_ *rtp.Header, _ *[]byte) {
+	// no-op
+}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/internal/rtpbuffer/retainable_packet.go

@@ -0,0 +1,62 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+package rtpbuffer
+
+import (
+	"sync"
+
+	"github.com/pion/rtp"
+)
+
+// RetainablePacket is a referenced counted RTP packet.
+type RetainablePacket struct {
+	onRelease func(*rtp.Header, *[]byte)
+
+	countMu sync.Mutex
+	count   int
+
+	header  *rtp.Header
+	buffer  *[]byte
+	payload []byte
+
+	sequenceNumber uint16
+}
+
+// Header returns the RTP Header of the RetainablePacket.
+func (p *RetainablePacket) Header() *rtp.Header {
+	return p.header
+}
+
+// Payload returns the RTP Payload of the RetainablePacket.
+func (p *RetainablePacket) Payload() []byte {
+	return p.payload
+}
+
+// Retain increases the reference count of the RetainablePacket.
+func (p *RetainablePacket) Retain() error {
+	p.countMu.Lock()
+	defer p.countMu.Unlock()
+	if p.count == 0 {
+		// already released
+		return errPacketReleased
+	}
+	p.count++
+
+	return nil
+}
+
+// Release decreases the reference count of the RetainablePacket and frees if needed.
+func (p *RetainablePacket) Release() {
+	p.countMu.Lock()
+	defer p.countMu.Unlock()
+	p.count--
+
+	if p.count == 0 {
+		// release back to pool
+		p.onRelease(p.header, p.buffer)
+		p.header = nil
+		p.buffer = nil
+		p.payload = nil
+	}
+}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/internal/rtpbuffer/rtpbuffer.go

@@ -0,0 +1,107 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+// Package rtpbuffer provides a buffer for storing RTP packets
+package rtpbuffer
+
+import (
+	"fmt"
+)
+
+const (
+	// Uint16SizeHalf is half of a math.Uint16.
+	Uint16SizeHalf = 1 << 15
+
+	maxPayloadLen = 1460
+)
+
+// RTPBuffer stores RTP packets and allows custom logic
+// around the lifetime of them via the PacketFactory.
+type RTPBuffer struct {
+	packets      []*RetainablePacket
+	size         uint16
+	highestAdded uint16
+	started      bool
+}
+
+// NewRTPBuffer constructs a new RTPBuffer.
+func NewRTPBuffer(size uint16) (*RTPBuffer, error) {
+	allowedSizes := make([]uint16, 0)
+	correctSize := false
+	for i := 0; i < 16; i++ {
+		if size == 1<<i {
+			correctSize = true
+
+			break
+		}
+		allowedSizes = append(allowedSizes, 1<<i)
+	}
+
+	if !correctSize {
+		return nil, fmt.Errorf("%w: %d is not a valid size, allowed sizes: %v", ErrInvalidSize, size, allowedSizes)
+	}
+
+	return &RTPBuffer{
+		packets: make([]*RetainablePacket, size),
+		size:    size,
+	}, nil
+}
+
+// Add places the RetainablePacket in the RTPBuffer.
+func (r *RTPBuffer) Add(packet *RetainablePacket) {
+	seq := packet.sequenceNumber
+	if !r.started {
+		r.packets[seq%r.size] = packet
+		r.highestAdded = seq
+		r.started = true
+
+		return
+	}
+
+	diff := seq - r.highestAdded
+	if diff == 0 {
+		return
+	} else if diff < Uint16SizeHalf {
+		for i := r.highestAdded + 1; i != seq; i++ {
+			idx := i % r.size
+			prevPacket := r.packets[idx]
+			if prevPacket != nil {
+				prevPacket.Release()
+			}
+			r.packets[idx] = nil
+		}
+		r.highestAdded = seq
+	}
+
+	idx := seq % r.size
+	prevPacket := r.packets[idx]
+	if prevPacket != nil {
+		prevPacket.Release()
+	}
+	r.packets[idx] = packet
+}
+
+// Get returns the RetainablePacket for the requested sequence number.
+func (r *RTPBuffer) Get(seq uint16) *RetainablePacket {
+	diff := r.highestAdded - seq
+	if diff >= Uint16SizeHalf {
+		return nil
+	}
+
+	if diff >= r.size {
+		return nil
+	}
+
+	pkt := r.packets[seq%r.size]
+	if pkt != nil {
+		if pkt.sequenceNumber != seq {
+			return nil
+		}
+		// already released
+		if err := pkt.Retain(); err != nil {
+			return nil
+		}
+	}
+
+	return pkt
+}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/internal/sequencenumber/unwrapper.go

@@ -9,7 +9,7 @@ const (
 	breakpoint               = 32768 // half of max uint16
 )
 
-// Unwrapper stores an unwrapped sequence number
+// Unwrapper stores an unwrapped sequence number.
 type Unwrapper struct {
 	init          bool
 	lastUnwrapped int64
@@ -19,18 +19,20 @@ func isNewer(value, previous uint16) bool {
 	if value-previous == breakpoint {
 		return value > previous
 	}
+
 	return value != previous && (value-previous) < breakpoint
 }
 
-// Unwrap unwraps the next sequencenumber
+// Unwrap unwraps the next sequencenumber.
 func (u *Unwrapper) Unwrap(i uint16) int64 {
 	if !u.init {
 		u.init = true
 		u.lastUnwrapped = int64(i)
+
 		return u.lastUnwrapped
 	}
 
-	lastWrapped := uint16(u.lastUnwrapped)
+	lastWrapped := uint16(u.lastUnwrapped) //nolint:gosec // G115
 	delta := int64(i - lastWrapped)
 	if isNewer(i, lastWrapped) {
 		if delta < 0 {
@@ -41,5 +43,6 @@ func (u *Unwrapper) Unwrap(i uint16) int64 {
 	}
 
 	u.lastUnwrapped += delta
+
 	return u.lastUnwrapped
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/noop.go

@@ -28,7 +28,8 @@ func (i *NoOp) BindLocalStream(_ *StreamInfo, writer RTPWriter) RTPWriter {
 // UnbindLocalStream is called when the Stream is removed. It can be used to clean up any data related to that track.
 func (i *NoOp) UnbindLocalStream(_ *StreamInfo) {}
 
-// BindRemoteStream lets you modify any incoming RTP packets. It is called once for per RemoteStream. The returned method
+// BindRemoteStream lets you modify any incoming RTP packets.
+// It is called once for per RemoteStream. The returned method
 // will be called once per rtp packet.
 func (i *NoOp) BindRemoteStream(_ *StreamInfo, reader RTPReader) RTPReader {
 	return reader

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/flexfec/encoder_interceptor.go

@@ -0,0 +1,128 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+package flexfec
+
+import (
+	"errors"
+	"sync"
+
+	"github.com/pion/interceptor"
+	"github.com/pion/rtp"
+)
+
+// streamState holds the state for a single stream.
+type streamState struct {
+	mu             sync.Mutex
+	flexFecEncoder FlexEncoder
+	packetBuffer   []rtp.Packet
+}
+
+// FecInterceptor implements FlexFec.
+type FecInterceptor struct {
+	interceptor.NoOp
+	mu              sync.Mutex
+	streams         map[uint32]*streamState
+	numMediaPackets uint32
+	numFecPackets   uint32
+	encoderFactory  EncoderFactory
+}
+
+// FecInterceptorFactory creates new FecInterceptors.
+type FecInterceptorFactory struct {
+	opts []FecOption
+}
+
+// NewFecInterceptor returns a new Fec interceptor factory.
+func NewFecInterceptor(opts ...FecOption) (*FecInterceptorFactory, error) {
+	return &FecInterceptorFactory{opts: opts}, nil
+}
+
+// NewInterceptor constructs a new FecInterceptor.
+func (r *FecInterceptorFactory) NewInterceptor(_ string) (interceptor.Interceptor, error) {
+	interceptor := &FecInterceptor{
+		streams:         make(map[uint32]*streamState),
+		numMediaPackets: 5,
+		numFecPackets:   2,
+		encoderFactory:  FlexEncoder03Factory{},
+	}
+
+	for _, opt := range r.opts {
+		if err := opt(interceptor); err != nil {
+			return nil, err
+		}
+	}
+
+	return interceptor, nil
+}
+
+// UnbindLocalStream removes the stream state for a specific SSRC.
+func (r *FecInterceptor) UnbindLocalStream(info *interceptor.StreamInfo) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	delete(r.streams, info.SSRC)
+}
+
+// BindLocalStream lets you modify any outgoing RTP packets. It is called once for per LocalStream. The returned method
+// will be called once per rtp packet.
+func (r *FecInterceptor) BindLocalStream(
+	info *interceptor.StreamInfo, writer interceptor.RTPWriter,
+) interceptor.RTPWriter {
+	if info.PayloadTypeForwardErrorCorrection == 0 || info.SSRCForwardErrorCorrection == 0 {
+		return writer
+	}
+
+	mediaSSRC := info.SSRC
+
+	r.mu.Lock()
+	stream := &streamState{
+		// Chromium supports version flexfec-03 of existing draft, this is the one we will configure by default
+		// although we should support configuring the latest (flexfec-20) as well.
+		flexFecEncoder: r.encoderFactory.NewEncoder(info.PayloadTypeForwardErrorCorrection, info.SSRCForwardErrorCorrection),
+		packetBuffer:   make([]rtp.Packet, 0),
+	}
+	r.streams[mediaSSRC] = stream
+	r.mu.Unlock()
+
+	return interceptor.RTPWriterFunc(
+		func(header *rtp.Header, payload []byte, attributes interceptor.Attributes) (int, error) {
+			// Ignore non-media packets
+			if header.SSRC != mediaSSRC {
+				return writer.Write(header, payload, attributes)
+			}
+
+			var fecPackets []rtp.Packet
+			stream.mu.Lock()
+			stream.packetBuffer = append(stream.packetBuffer, rtp.Packet{
+				Header:  *header,
+				Payload: payload,
+			})
+
+			// Check if we have enough packets to generate FEC
+			if len(stream.packetBuffer) == int(r.numMediaPackets) {
+				fecPackets = stream.flexFecEncoder.EncodeFec(stream.packetBuffer, r.numFecPackets)
+				// Reset the packet buffer now that we've sent the corresponding FEC packets.
+				stream.packetBuffer = nil
+			}
+			stream.mu.Unlock()
+
+			var errs []error
+			result, err := writer.Write(header, payload, attributes)
+			if err != nil {
+				errs = append(errs, err)
+			}
+
+			for _, packet := range fecPackets {
+				header := packet.Header
+
+				_, err = writer.Write(&header, packet.Payload, attributes)
+				if err != nil {
+					errs = append(errs, err)
+				}
+			}
+
+			return result, errors.Join(errs...)
+		},
+	)
+}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/flexfec/flexfec_coverage.go

@@ -0,0 +1,177 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+package flexfec
+
+import (
+	"github.com/pion/interceptor/pkg/flexfec/util"
+	"github.com/pion/rtp"
+)
+
+// Maximum number of media packets that can be protected by a single FEC packet.
+// We are not supporting the possibility of having an FEC packet protect multiple
+// SSRC source packets for now.
+// https://datatracker.ietf.org/doc/html/rfc8627#section-4.2.2.1
+const (
+	MaxMediaPackets uint32 = 110
+	MaxFecPackets   uint32 = MaxMediaPackets
+)
+
+// ProtectionCoverage defines the map of RTP packets that individual Fec packets protect.
+type ProtectionCoverage struct {
+	// Array of masks, each mask capable of covering up to maxMediaPkts = 110.
+	// A mask is represented as a grouping of bytes where each individual bit
+	// represents the coverage for the media packet at the corresponding index.
+	packetMasks     [MaxFecPackets]util.BitArray
+	numFecPackets   uint32
+	numMediaPackets uint32
+	mediaPackets    []rtp.Packet
+}
+
+// NewCoverage returns a new ProtectionCoverage object. numFecPackets represents the number of
+// Fec packets that we will be generating to cover the list of mediaPackets. This allows us to know
+// how big the underlying map should be.
+func NewCoverage(mediaPackets []rtp.Packet, numFecPackets uint32) *ProtectionCoverage {
+	numMediaPackets := uint32(len(mediaPackets)) //nolint:gosec // G115
+
+	// Basic sanity checks
+	if numMediaPackets <= 0 || numMediaPackets > MaxMediaPackets {
+		return nil
+	}
+
+	// We allocate the biggest array of bitmasks that respects the max constraints.
+	var packetMasks [MaxFecPackets]util.BitArray
+	for i := 0; i < int(MaxFecPackets); i++ {
+		packetMasks[i] = util.BitArray{}
+	}
+
+	coverage := &ProtectionCoverage{
+		packetMasks:     packetMasks,
+		numFecPackets:   0,
+		numMediaPackets: 0,
+		mediaPackets:    nil,
+	}
+
+	coverage.UpdateCoverage(mediaPackets, numFecPackets)
+
+	return coverage
+}
+
+// UpdateCoverage updates the ProtectionCoverage object with new bitmasks accounting for the numFecPackets
+// we want to use to protect the batch media packets.
+func (p *ProtectionCoverage) UpdateCoverage(mediaPackets []rtp.Packet, numFecPackets uint32) {
+	numMediaPackets := uint32(len(mediaPackets)) //nolint:gosec // G115
+
+	// Basic sanity checks
+	if numMediaPackets <= 0 || numMediaPackets > MaxMediaPackets {
+		return
+	}
+
+	p.mediaPackets = mediaPackets
+
+	if numFecPackets == p.numFecPackets && numMediaPackets == p.numMediaPackets {
+		// We have the same number of FEC packets covering the same number of media packets, we can simply
+		// reuse the previous coverage map with the updated media packets.
+		return
+	}
+
+	p.numFecPackets = numFecPackets
+	p.numMediaPackets = numMediaPackets
+
+	// The number of FEC packets and/or the number of packets has changed, we need to update the coverage map
+	// to reflect these new values.
+	p.resetCoverage()
+
+	// Generate FEC bit mask where numFecPackets FEC packets are covering numMediaPackets Media packets.
+	// In the packetMasks array, each FEC packet is represented by a single BitArray, each bit in a given BitArray
+	// corresponds to a specific Media packet.
+	// Ex: Row I, Col J is set to 1 -> FEC packet I will protect media packet J.
+	for fecPacketIndex := uint32(0); fecPacketIndex < numFecPackets; fecPacketIndex++ {
+		// We use an interleaved method to determine coverage. Given N FEC packets, Media packet X will be
+		// covered by FEC packet X % N.
+		coveredMediaPacketIndex := fecPacketIndex
+		for coveredMediaPacketIndex < numMediaPackets {
+			p.packetMasks[fecPacketIndex].SetBit(coveredMediaPacketIndex)
+			coveredMediaPacketIndex += numFecPackets
+		}
+	}
+}
+
+// ResetCoverage clears the underlying map so that we can reuse it for new batches of RTP packets.
+func (p *ProtectionCoverage) resetCoverage() {
+	for i := uint32(0); i < MaxFecPackets; i++ {
+		p.packetMasks[i].Reset()
+	}
+}
+
+// GetCoveredBy returns an iterator over RTP packets that are protected by the specified Fec packet index.
+func (p *ProtectionCoverage) GetCoveredBy(fecPacketIndex uint32) *util.MediaPacketIterator {
+	coverage := make([]uint32, 0, p.numMediaPackets)
+	for mediaPacketIndex := uint32(0); mediaPacketIndex < p.numMediaPackets; mediaPacketIndex++ {
+		if p.packetMasks[fecPacketIndex].GetBit(mediaPacketIndex) == 1 {
+			coverage = append(coverage, mediaPacketIndex)
+		}
+	}
+
+	return util.NewMediaPacketIterator(p.mediaPackets, coverage)
+}
+
+// ExtractMask1 returns the first section of the bitmask as defined by the FEC header.
+// https://datatracker.ietf.org/doc/html/rfc8627#section-4.2.2.1
+func (p *ProtectionCoverage) ExtractMask1(fecPacketIndex uint32) uint16 {
+	return extractMask1(p.packetMasks[fecPacketIndex])
+}
+
+// ExtractMask2 returns the second section of the bitmask as defined by the FEC header.
+// https://datatracker.ietf.org/doc/html/rfc8627#section-4.2.2.1
+func (p *ProtectionCoverage) ExtractMask2(fecPacketIndex uint32) uint32 {
+	return extractMask2(p.packetMasks[fecPacketIndex])
+}
+
+// ExtractMask3 returns the third section of the bitmask as defined by the FEC header.
+// https://datatracker.ietf.org/doc/html/rfc8627#section-4.2.2.1
+func (p *ProtectionCoverage) ExtractMask3(fecPacketIndex uint32) uint64 {
+	return extractMask3(p.packetMasks[fecPacketIndex])
+}
+
+// ExtractMask3_03 returns the third section of the bitmask as defined by the FEC header.
+// https://datatracker.ietf.org/doc/html/draft-ietf-payload-flexible-fec-scheme-03#section-4.2
+func (p *ProtectionCoverage) ExtractMask3_03(fecPacketIndex uint32) uint64 {
+	return extractMask3_03(p.packetMasks[fecPacketIndex])
+}
+
+func extractMask1(mask util.BitArray) uint16 {
+	// We get the first 16 bits (64 - 16 -> shift by 48) and we shift once more for K field
+	mask1 := mask.Lo >> 49
+
+	return uint16(mask1) //nolint:gosec // G115
+}
+
+func extractMask2(mask util.BitArray) uint32 {
+	// We remove the first 15 bits
+	mask2 := mask.Lo << 15
+	// We get the first 31 bits (64 - 32 -> shift by 32) and we shift once more for K field
+	mask2 >>= 33
+
+	return uint32(mask2) //nolint:gosec
+}
+
+func extractMask3(mask util.BitArray) uint64 {
+	// We remove the first 46 bits
+	maskLo := mask.Lo << 46
+	maskHi := mask.Hi >> 18
+	mask3 := maskLo | maskHi
+
+	return mask3
+}
+
+func extractMask3_03(mask util.BitArray) uint64 {
+	// We remove the first 46 bits
+	maskLo := mask.Lo << 46
+	maskHi := mask.Hi >> 18
+	mask3 := maskLo | maskHi
+	// We shift once for the K bit.
+	mask3 >>= 1
+
+	return mask3
+}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/flexfec/flexfec_decoder_03.go

@@ -0,0 +1,445 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+// Package flexfec implements FlexFEC-03 to recover missing RTP packets due to packet loss.
+// https://datatracker.ietf.org/doc/html/draft-ietf-payload-flexible-fec-scheme-03
+package flexfec
+
+import (
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"sort"
+
+	"github.com/pion/logging"
+	"github.com/pion/rtp"
+)
+
+// Static errors for the flexfec package.
+var (
+	errPacketTruncated                = errors.New("packet truncated")
+	errRetransmissionBitSet           = errors.New("packet with retransmission bit set not supported")
+	errInflexibleGeneratorMatrix      = errors.New("packet with inflexible generator matrix not supported")
+	errMultipleSSRCProtection         = errors.New("multiple ssrc protection not supported")
+	errLastOptionalMaskKBitSetToFalse = errors.New("k-bit of last optional mask is set to false")
+)
+
+// fecDecoder is a WIP implementation decoder used for testing purposes.
+type fecDecoder struct {
+	logger              logging.LeveledLogger
+	ssrc                uint32
+	protectedStreamSSRC uint32
+	maxMediaPackets     int
+	maxFECPackets       int
+	recoveredPackets    []rtp.Packet
+	receivedFECPackets  []fecPacketState
+}
+
+func newFECDecoder(ssrc uint32, protectedStreamSSRC uint32) *fecDecoder {
+	return &fecDecoder{
+		logger:              logging.NewDefaultLoggerFactory().NewLogger("fec_decoder"),
+		ssrc:                ssrc,
+		protectedStreamSSRC: protectedStreamSSRC,
+		maxMediaPackets:     100,
+		maxFECPackets:       100,
+		recoveredPackets:    make([]rtp.Packet, 0),
+		receivedFECPackets:  make([]fecPacketState, 0),
+	}
+}
+
+func (d *fecDecoder) DecodeFec(receivedPacket rtp.Packet) []rtp.Packet {
+	if len(d.recoveredPackets) == d.maxMediaPackets {
+		backRecoveredPacket := d.recoveredPackets[len(d.recoveredPackets)-1]
+		if backRecoveredPacket.SSRC == receivedPacket.SSRC {
+			seqDiffVal := seqDiff(receivedPacket.SequenceNumber, backRecoveredPacket.SequenceNumber)
+			if seqDiffVal > uint16(d.maxMediaPackets) { //nolint:gosec
+				d.logger.Info("big gap in media sequence numbers - resetting buffers")
+				d.recoveredPackets = nil
+				d.receivedFECPackets = nil
+			}
+		}
+	}
+
+	d.insertPacket(receivedPacket)
+
+	return d.attemptRecovery()
+}
+
+func (d *fecDecoder) insertPacket(receivedPkt rtp.Packet) {
+	// Discard old FEC packets such that the sequence numbers in
+	// `received_fec_packets_` span at most 1/2 of the sequence number space.
+	// This is important for keeping `received_fec_packets_` sorted, and may
+	// also reduce the possibility of incorrect decoding due to sequence number
+	// wrap-around.
+	if len(d.receivedFECPackets) > 0 && receivedPkt.SSRC == d.ssrc {
+		toRemove := 0
+		for _, fecPkt := range d.receivedFECPackets {
+			if abs(int(receivedPkt.SequenceNumber)-int(fecPkt.packet.SequenceNumber)) > 0x3fff {
+				toRemove++
+			} else {
+				// No need to keep iterating, since |received_fec_packets_| is sorted.
+				break
+			}
+		}
+	}
+
+	switch receivedPkt.SSRC {
+	case d.ssrc:
+		d.insertFECPacket(receivedPkt)
+	case d.protectedStreamSSRC:
+		d.insertMediaPacket(receivedPkt)
+	}
+
+	d.discardOldRecoveredPackets()
+}
+
+func (d *fecDecoder) insertMediaPacket(receivedPkt rtp.Packet) {
+	for _, recoveredPacket := range d.recoveredPackets {
+		if recoveredPacket.SequenceNumber == receivedPkt.SequenceNumber {
+			return
+		}
+	}
+
+	d.recoveredPackets = append(d.recoveredPackets, receivedPkt)
+	sort.Slice(d.recoveredPackets, func(i, j int) bool {
+		return isNewerSeq(d.recoveredPackets[i].SequenceNumber, d.recoveredPackets[j].SequenceNumber)
+	})
+	d.updateCoveringFecPackets(receivedPkt)
+}
+
+func (d *fecDecoder) updateCoveringFecPackets(receivedPkt rtp.Packet) {
+	for _, fecPkt := range d.receivedFECPackets {
+		for _, protectedPacket := range fecPkt.protectedPackets {
+			if protectedPacket.seq == receivedPkt.SequenceNumber {
+				protectedPacket.packet = &receivedPkt
+			}
+		}
+	}
+}
+
+func (d *fecDecoder) insertFECPacket(fecPkt rtp.Packet) { //nolint:cyclop
+	for _, existingFECPacket := range d.receivedFECPackets {
+		if existingFECPacket.packet.SequenceNumber == fecPkt.SequenceNumber {
+			return
+		}
+	}
+
+	fec, err := parseFlexFEC03Header(fecPkt.Payload)
+	if err != nil {
+		d.logger.Errorf("failed to parse flexfec03 header: %v", err)
+
+		return
+	}
+
+	if fec.protectedSSRC != d.protectedStreamSSRC {
+		d.logger.Errorf("fec is protecting unknown ssrc, expected %d, got %d", fec.protectedSSRC, d.protectedStreamSSRC)
+
+		return
+	}
+
+	protectedSeqs := decodeMask(uint64(fec.mask0), 15, fec.seqNumBase)
+	if fec.mask1 != 0 {
+		protectedSeqs = append(protectedSeqs, decodeMask(uint64(fec.mask1), 31, fec.seqNumBase+15)...)
+	}
+	if fec.mask2 != 0 {
+		protectedSeqs = append(protectedSeqs, decodeMask(fec.mask2, 63, fec.seqNumBase+46)...)
+	}
+
+	if len(protectedSeqs) == 0 {
+		d.logger.Warn("empty fec packet mask")
+
+		return
+	}
+
+	protectedPackets := make([]*protectedPacket, 0, len(protectedSeqs))
+	protectedSeqIt := 0
+	recoveredPacketIt := 0
+
+	for protectedSeqIt < len(protectedSeqs) && recoveredPacketIt < len(d.recoveredPackets) {
+		switch {
+		case isNewerSeq(protectedSeqs[protectedSeqIt], d.recoveredPackets[recoveredPacketIt].SequenceNumber):
+			protectedPackets = append(protectedPackets, &protectedPacket{
+				seq:    protectedSeqs[protectedSeqIt],
+				packet: nil,
+			})
+			protectedSeqIt++
+		case isNewerSeq(d.recoveredPackets[recoveredPacketIt].SequenceNumber, protectedSeqs[protectedSeqIt]):
+			recoveredPacketIt++
+		default:
+			protectedPackets = append(protectedPackets, &protectedPacket{
+				seq:    protectedSeqs[protectedSeqIt],
+				packet: &d.recoveredPackets[recoveredPacketIt],
+			})
+			protectedSeqIt++
+			recoveredPacketIt++
+		}
+	}
+
+	for protectedSeqIt < len(protectedSeqs) {
+		protectedPackets = append(protectedPackets, &protectedPacket{
+			seq:    protectedSeqs[protectedSeqIt],
+			packet: nil,
+		})
+		protectedSeqIt++
+	}
+	d.receivedFECPackets = append(d.receivedFECPackets, fecPacketState{
+		packet:           fecPkt,
+		flexFec:          fec,
+		protectedPackets: protectedPackets,
+	})
+
+	sort.Slice(d.receivedFECPackets, func(i, j int) bool {
+		return isNewerSeq(d.receivedFECPackets[i].packet.SequenceNumber, d.receivedFECPackets[j].packet.SequenceNumber)
+	})
+
+	if len(d.receivedFECPackets) > d.maxFECPackets {
+		d.receivedFECPackets = d.receivedFECPackets[1:]
+	}
+}
+
+func (d *fecDecoder) attemptRecovery() []rtp.Packet {
+	recoveredPackets := make([]rtp.Packet, 0)
+	for {
+		packetsRecovered := 0
+		for _, fecPkt := range d.receivedFECPackets {
+			packetsMissing := 0
+			for _, pkt := range fecPkt.protectedPackets {
+				if pkt.packet == nil {
+					packetsMissing++
+					if packetsMissing > 1 {
+						break
+					}
+				}
+			}
+
+			if packetsMissing != 1 {
+				continue
+			}
+
+			recovered, err := d.recoverPacket(&fecPkt) //nolint:gosec
+			if err != nil {
+				d.logger.Errorf("failed to recover packet: %v", err)
+			}
+
+			recoveredPackets = append(recoveredPackets, recovered)
+			d.recoveredPackets = append(d.recoveredPackets, recovered)
+			sort.Slice(d.recoveredPackets, func(i, j int) bool {
+				return isNewerSeq(d.recoveredPackets[i].SequenceNumber, d.recoveredPackets[j].SequenceNumber)
+			})
+
+			d.updateCoveringFecPackets(recovered)
+			d.discardOldRecoveredPackets()
+			packetsRecovered++
+		}
+
+		if packetsRecovered == 0 {
+			break
+		}
+	}
+
+	return recoveredPackets
+}
+
+func (d *fecDecoder) recoverPacket(fec *fecPacketState) (rtp.Packet, error) {
+	// https://datatracker.ietf.org/doc/html/draft-ietf-payload-flexible-fec-scheme-03#section-6.3.2
+
+	// 2. For the repair packet in T, extract the FEC bit string as the
+	//    first 80 bits of the FEC header.
+	headerRecovery := make([]byte, 12)
+	copy(headerRecovery, fec.packet.Payload[:10])
+
+	var seqnum uint16
+	for _, protectedPacket := range fec.protectedPackets {
+		if protectedPacket.packet != nil {
+			// 1.   For each of the source packets that are successfully received in
+			//      T, compute the 80-bit string by concatenating the first 64 bits
+			//      of their RTP header and the unsigned network-ordered 16-bit
+			//      representation of their length in bytes minus 12.
+			receivedHeader, err := protectedPacket.packet.Header.Marshal()
+			if err != nil {
+				return rtp.Packet{}, fmt.Errorf("marshal received header: %w", err)
+			}
+			binary.BigEndian.PutUint16(receivedHeader[2:4], uint16(protectedPacket.packet.MarshalSize()-12)) //nolint:gosec
+			for i := 0; i < 8; i++ {
+				headerRecovery[i] ^= receivedHeader[i]
+			}
+		} else {
+			seqnum = protectedPacket.seq
+		}
+	}
+
+	// set version to 2
+	headerRecovery[0] |= 0x80
+	headerRecovery[0] &= 0xbf
+	payloadLength := binary.BigEndian.Uint16(headerRecovery[2:4])
+	binary.BigEndian.PutUint16(headerRecovery[2:4], seqnum)
+	binary.BigEndian.PutUint32(headerRecovery[8:12], d.protectedStreamSSRC)
+
+	payloadRecovery := make([]byte, payloadLength)
+	copy(payloadRecovery, fec.flexFec.payload)
+	for _, protectedPacket := range fec.protectedPackets {
+		if protectedPacket.packet != nil {
+			packet, err := protectedPacket.packet.Marshal()
+			if err != nil {
+				return rtp.Packet{}, fmt.Errorf("marshal protected packet: %w", err)
+			}
+			for i := 0; i < minInt(int(payloadLength), len(packet)-12); i++ {
+				payloadRecovery[i] ^= packet[12+i]
+			}
+		}
+	}
+
+	headerRecovery = append(headerRecovery, payloadRecovery...) //nolint:makezero
+
+	var packet rtp.Packet
+	err := packet.Unmarshal(headerRecovery)
+	if err != nil {
+		return rtp.Packet{}, fmt.Errorf("unmarshal recovered: %w", err)
+	}
+
+	return packet, nil
+}
+
+func (d *fecDecoder) discardOldRecoveredPackets() {
+	const limit = 192
+	if len(d.recoveredPackets) > limit {
+		d.recoveredPackets = d.recoveredPackets[len(d.recoveredPackets)-192:]
+	}
+}
+
+func decodeMask(mask uint64, bitCount uint16, seqNumBase uint16) []uint16 {
+	res := make([]uint16, 0)
+	for i := uint16(0); i < bitCount; i++ {
+		if (mask>>(bitCount-1-i))&1 == 1 {
+			res = append(res, seqNumBase+i)
+		}
+	}
+
+	return res
+}
+
+type fecPacketState struct {
+	packet           rtp.Packet
+	flexFec          flexFec
+	protectedPackets []*protectedPacket
+}
+
+type flexFec struct {
+	protectedSSRC uint32
+	seqNumBase    uint16
+	mask0         uint16
+	mask1         uint32
+	mask2         uint64
+	payload       []byte
+}
+
+type protectedPacket struct {
+	seq    uint16
+	packet *rtp.Packet
+}
+
+func parseFlexFEC03Header(data []byte) (flexFec, error) {
+	if len(data) < 20 {
+		return flexFec{}, fmt.Errorf("%w: length %d", errPacketTruncated, len(data))
+	}
+
+	rBit := (data[0] & 0x80) != 0
+	if rBit {
+		return flexFec{}, errRetransmissionBitSet
+	}
+
+	fBit := (data[0] & 0x40) != 0
+	if fBit {
+		return flexFec{}, errInflexibleGeneratorMatrix
+	}
+
+	ssrcCount := data[8]
+	if ssrcCount != 1 {
+		return flexFec{}, fmt.Errorf("%w: count %d", errMultipleSSRCProtection, ssrcCount)
+	}
+
+	protectedSSRC := binary.BigEndian.Uint32(data[12:])
+	seqNumBase := binary.BigEndian.Uint16(data[16:])
+	rawPacketMask := data[18:]
+	var payload []byte
+
+	kBit0 := (rawPacketMask[0] & 0x80) != 0
+	maskPart0 := binary.BigEndian.Uint16(rawPacketMask[0:2]) & 0x7FFF
+	var maskPart1 uint32
+	var maskPart2 uint64
+
+	if kBit0 { //nolint:nestif
+		payload = rawPacketMask[2:]
+	} else {
+		if len(data) < 24 {
+			return flexFec{}, fmt.Errorf("%w: length %d", errPacketTruncated, len(data))
+		}
+
+		kBit1 := (rawPacketMask[2] & 0x80) != 0
+		maskPart1 = binary.BigEndian.Uint32(rawPacketMask[2:]) & 0x7FFFFFFF
+
+		if kBit1 {
+			payload = rawPacketMask[6:]
+		} else {
+			if len(data) < 32 {
+				return flexFec{}, fmt.Errorf("%w: length %d", errPacketTruncated, len(data))
+			}
+
+			kBit2 := (rawPacketMask[6] & 0x80) != 0
+			maskPart2 = binary.BigEndian.Uint64(rawPacketMask[6:]) & 0x7FFFFFFFFFFFFFFF
+
+			if kBit2 {
+				payload = rawPacketMask[14:]
+			} else {
+				return flexFec{}, errLastOptionalMaskKBitSetToFalse
+			}
+		}
+	}
+
+	return flexFec{
+		protectedSSRC: protectedSSRC,
+		seqNumBase:    seqNumBase,
+		mask0:         maskPart0,
+		mask1:         maskPart1,
+		mask2:         maskPart2,
+		payload:       payload,
+	}, nil
+}
+
+func seqDiff(a, b uint16) uint16 {
+	return minUInt16(a-b, b-a)
+}
+
+func minInt(a, b int) int {
+	if a < b {
+		return a
+	}
+
+	return b
+}
+
+func minUInt16(a, b uint16) uint16 {
+	if a < b {
+		return a
+	}
+
+	return b
+}
+
+func abs(x int) int {
+	if x >= 0 {
+		return x
+	}
+
+	return -x
+}
+
+func isNewerSeq(prevValue, value uint16) bool {
+	// half-way mark
+	breakpoint := uint16(0x8000)
+	if value-prevValue == breakpoint {
+		return value > prevValue
+	}
+
+	return value != prevValue && (value-prevValue) < breakpoint
+}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/flexfec/flexfec_encoder.go

@@ -0,0 +1,209 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+// Package flexfec implements FlexFEC to recover missing RTP packets due to packet loss.
+// https://datatracker.ietf.org/doc/html/rfc8627
+package flexfec
+
+import (
+	"encoding/binary"
+
+	"github.com/pion/interceptor/pkg/flexfec/util"
+	"github.com/pion/rtp"
+)
+
+const (
+	// BaseRTPHeaderSize represents the minium RTP packet header size in bytes.
+	BaseRTPHeaderSize = 12
+	// BaseFecHeaderSize represents the minium FEC payload's header size including the
+	// required first mask.
+	BaseFecHeaderSize = 12
+)
+
+// EncoderFactory is an interface for generic FEC encoders.
+type EncoderFactory interface {
+	NewEncoder(payloadType uint8, ssrc uint32) FlexEncoder
+}
+
+// FlexEncoder is the interface that FecInterceptor uses to encode Fec packets.
+type FlexEncoder interface {
+	EncodeFec(mediaPackets []rtp.Packet, numFecPackets uint32) []rtp.Packet
+}
+
+// FlexEncoder20 implementation is WIP, contains bugs and no tests. Check out FlexEncoder03.
+type FlexEncoder20 struct {
+	fecBaseSn   uint16
+	payloadType uint8
+	ssrc        uint32
+	coverage    *ProtectionCoverage
+}
+
+// NewFlexEncoder returns a new FlexEncoder20.
+// FlexEncoder20 implementation is WIP, contains bugs and no tests. Check out FlexEncoder03.
+func NewFlexEncoder(payloadType uint8, ssrc uint32) *FlexEncoder20 {
+	return &FlexEncoder20{
+		payloadType: payloadType,
+		ssrc:        ssrc,
+		fecBaseSn:   uint16(1000),
+	}
+}
+
+// EncodeFec returns a list of generated RTP packets with FEC payloads that protect the specified mediaPackets.
+// This method does not account for missing RTP packets in the mediaPackets array nor does it account for
+// them being passed out of order.
+func (flex *FlexEncoder20) EncodeFec(mediaPackets []rtp.Packet, numFecPackets uint32) []rtp.Packet {
+	// Start by defining which FEC packets cover which media packets
+	if flex.coverage == nil {
+		flex.coverage = NewCoverage(mediaPackets, numFecPackets)
+	} else {
+		flex.coverage.UpdateCoverage(mediaPackets, numFecPackets)
+	}
+
+	if flex.coverage == nil {
+		return nil
+	}
+
+	// Generate FEC payloads
+	fecPackets := make([]rtp.Packet, numFecPackets)
+	for fecPacketIndex := uint32(0); fecPacketIndex < numFecPackets; fecPacketIndex++ {
+		fecPackets[fecPacketIndex] = flex.encodeFlexFecPacket(fecPacketIndex, mediaPackets[0].SequenceNumber)
+	}
+
+	return fecPackets
+}
+
+func (flex *FlexEncoder20) encodeFlexFecPacket(fecPacketIndex uint32, mediaBaseSn uint16) rtp.Packet {
+	mediaPacketsIt := flex.coverage.GetCoveredBy(fecPacketIndex)
+	flexFecHeader := flex.encodeFlexFecHeader(
+		mediaPacketsIt,
+		flex.coverage.ExtractMask1(fecPacketIndex),
+		flex.coverage.ExtractMask2(fecPacketIndex),
+		flex.coverage.ExtractMask3(fecPacketIndex),
+		mediaBaseSn,
+	)
+	flexFecRepairPayload := flex.encodeFlexFecRepairPayload(mediaPacketsIt.Reset())
+
+	packet := rtp.Packet{
+		Header: rtp.Header{
+			Version:        2,
+			Padding:        false,
+			Extension:      false,
+			Marker:         false,
+			PayloadType:    flex.payloadType,
+			SequenceNumber: flex.fecBaseSn,
+			Timestamp:      54243243,
+			SSRC:           flex.ssrc,
+			CSRC:           []uint32{},
+		},
+		Payload: append(flexFecHeader, flexFecRepairPayload...),
+	}
+	flex.fecBaseSn++
+
+	return packet
+}
+
+func (flex *FlexEncoder20) encodeFlexFecHeader(
+	mediaPackets *util.MediaPacketIterator,
+	mask1 uint16,
+	optionalMask2 uint32,
+	optionalMask3 uint64,
+	mediaBaseSn uint16,
+) []byte {
+	/*
+	   0                   1                   2                   3
+	        0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+	       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+	       |0|0|P|X|  CC   |M| PT recovery |        length recovery        |
+	       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+	       |                          TS recovery                          |
+	       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+	       |           SN base_i           |k|          Mask [0-14]        |
+	       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+	       |k|                   Mask [15-45] (optional)                   |
+	       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+	       |                     Mask [46-109] (optional)                  |
+	       |                                                               |
+	       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+	       |   ... next SN base and Mask for CSRC_i in CSRC list ...       |
+	       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+	       :               Repair "Payload" follows FEC Header             :
+	       :                                                               :
+	*/
+
+	// Get header size - This depends on the size of the bitmask.
+	headerSize := BaseFecHeaderSize
+	if optionalMask2 > 0 {
+		headerSize += 4
+	}
+	if optionalMask3 > 0 {
+		headerSize += 8
+	}
+
+	// Allocate the FlexFec header
+	flexFecHeader := make([]byte, headerSize)
+
+	// XOR the relevant fields for the header
+	// TO DO - CHECK TO SEE IF THE MARSHALTO() call works with this.
+	tmpMediaPacketBuf := make([]byte, headerSize)
+	for mediaPackets.HasNext() {
+		mediaPacket := mediaPackets.Next()
+		n, err := mediaPacket.MarshalTo(tmpMediaPacketBuf)
+
+		if n == 0 || err != nil {
+			return nil
+		}
+
+		// XOR the first 2 bytes of the header: V, P, X, CC, M, PT fields
+		flexFecHeader[0] ^= tmpMediaPacketBuf[0]
+		flexFecHeader[1] ^= tmpMediaPacketBuf[1]
+
+		// XOR the length recovery field
+		lengthRecoveryVal := uint16(mediaPacket.MarshalSize() - BaseRTPHeaderSize) //nolint:gosec // G115
+		flexFecHeader[2] ^= uint8(lengthRecoveryVal >> 8)                          //nolint:gosec // G115
+		flexFecHeader[3] ^= uint8(lengthRecoveryVal)                               //nolint:gosec // G115
+
+		// XOR the 5th to 8th bytes of the header: the timestamp field
+		flexFecHeader[4] ^= flexFecHeader[4]
+		flexFecHeader[5] ^= flexFecHeader[5]
+		flexFecHeader[6] ^= flexFecHeader[6]
+		flexFecHeader[7] ^= flexFecHeader[7]
+	}
+
+	// Write the base SN for the batch of media packets
+	binary.BigEndian.PutUint16(flexFecHeader[8:10], mediaBaseSn)
+
+	// Write the bitmasks to the header
+	binary.BigEndian.PutUint16(flexFecHeader[10:12], mask1)
+
+	if optionalMask2 > 0 {
+		binary.BigEndian.PutUint32(flexFecHeader[12:16], optionalMask2)
+		flexFecHeader[10] |= 0b10000000
+	}
+	if optionalMask3 > 0 {
+		binary.BigEndian.PutUint64(flexFecHeader[16:24], optionalMask3)
+		flexFecHeader[12] |= 0b10000000
+	}
+
+	return flexFecHeader
+}
+
+func (flex *FlexEncoder20) encodeFlexFecRepairPayload(mediaPackets *util.MediaPacketIterator) []byte {
+	flexFecPayload := make([]byte, len(mediaPackets.First().Payload))
+
+	for mediaPackets.HasNext() {
+		mediaPacketPayload := mediaPackets.Next().Payload
+
+		if len(flexFecPayload) < len(mediaPacketPayload) {
+			// Expected FEC packet payload is bigger that what we can currently store,
+			// we need to resize.
+			flexFecPayloadTmp := make([]byte, len(mediaPacketPayload))
+			copy(flexFecPayloadTmp, flexFecPayload)
+			flexFecPayload = flexFecPayloadTmp
+		}
+		for byteIndex := 0; byteIndex < len(mediaPacketPayload); byteIndex++ {
+			flexFecPayload[byteIndex] ^= mediaPacketPayload[byteIndex]
+		}
+	}
+
+	return flexFecPayload
+}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/flexfec/flexfec_encoder_03.go

@@ -0,0 +1,255 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+// Package flexfec implements FlexFEC to recover missing RTP packets due to packet loss.
+// https://datatracker.ietf.org/doc/html/rfc8627
+package flexfec
+
+import (
+	"encoding/binary"
+
+	"github.com/pion/interceptor/pkg/flexfec/util"
+	"github.com/pion/rtp"
+)
+
+const (
+	// BaseFec03HeaderSize represents the minium FEC payload's header size including the
+	// required first mask.
+	BaseFec03HeaderSize = 20
+)
+
+// FlexEncoder03 implements the Fec encoding mechanism for the "Flex" variant of FlexFec.
+type FlexEncoder03 struct {
+	fecBaseSn   uint16
+	payloadType uint8
+	ssrc        uint32
+	coverage    *ProtectionCoverage
+}
+
+// FlexEncoder03Factory is a factory for FlexFEC-03 encoders.
+type FlexEncoder03Factory struct{}
+
+// NewEncoder creates new FlexFEC-03 encoder.
+func (f FlexEncoder03Factory) NewEncoder(payloadType uint8, ssrc uint32) FlexEncoder {
+	return NewFlexEncoder03(payloadType, ssrc)
+}
+
+// NewFlexEncoder03 creates new FlexFEC-03 encoder.
+func NewFlexEncoder03(payloadType uint8, ssrc uint32) *FlexEncoder03 {
+	return &FlexEncoder03{
+		payloadType: payloadType,
+		ssrc:        ssrc,
+		fecBaseSn:   uint16(1000),
+	}
+}
+
+// EncodeFec returns a list of generated RTP packets with FEC payloads that protect the specified mediaPackets.
+// This method returns nil in case of missing RTP packets in the mediaPackets array or packets passed out of order.
+func (flex *FlexEncoder03) EncodeFec(mediaPackets []rtp.Packet, numFecPackets uint32) []rtp.Packet {
+	// Check if mediaPackets is empty
+	if len(mediaPackets) == 0 {
+		return nil
+	}
+
+	// Check if RTP packets are in order by comparing sequence numbers
+	for i := 1; i < len(mediaPackets); i++ {
+		if mediaPackets[i].SequenceNumber != mediaPackets[i-1].SequenceNumber+1 {
+			// Packets are not in order or there are missing packets
+			return nil
+		}
+	}
+
+	// Start by defining which FEC packets cover which media packets
+	if flex.coverage == nil {
+		flex.coverage = NewCoverage(mediaPackets, numFecPackets)
+	} else {
+		flex.coverage.UpdateCoverage(mediaPackets, numFecPackets)
+	}
+
+	if flex.coverage == nil {
+		return nil
+	}
+
+	// Generate FEC payloads
+	fecPackets := make([]rtp.Packet, numFecPackets)
+	for fecPacketIndex := uint32(0); fecPacketIndex < numFecPackets; fecPacketIndex++ {
+		fecPackets[fecPacketIndex] = flex.encodeFlexFecPacket(fecPacketIndex, mediaPackets[0].SequenceNumber)
+	}
+
+	return fecPackets
+}
+
+func (flex *FlexEncoder03) encodeFlexFecPacket(fecPacketIndex uint32, mediaBaseSn uint16) rtp.Packet {
+	mediaPacketsIt := flex.coverage.GetCoveredBy(fecPacketIndex)
+	flexFecHeader := flex.encodeFlexFecHeader(
+		mediaPacketsIt,
+		flex.coverage.ExtractMask1(fecPacketIndex),
+		flex.coverage.ExtractMask2(fecPacketIndex),
+		flex.coverage.ExtractMask3_03(fecPacketIndex),
+		mediaBaseSn,
+	)
+	flexFecRepairPayload := flex.encodeFlexFecRepairPayload(mediaPacketsIt.Reset())
+
+	packet := rtp.Packet{
+		Header: rtp.Header{
+			Version:        2,
+			Padding:        false,
+			Extension:      false,
+			Marker:         false,
+			PayloadType:    flex.payloadType,
+			SequenceNumber: flex.fecBaseSn,
+			Timestamp:      54243243,
+			SSRC:           flex.ssrc,
+			CSRC:           []uint32{},
+		},
+		Payload: append(flexFecHeader, flexFecRepairPayload...),
+	}
+	flex.fecBaseSn++
+
+	return packet
+}
+
+func (flex *FlexEncoder03) encodeFlexFecHeader( //nolint:cyclop
+	mediaPackets *util.MediaPacketIterator,
+	mask1 uint16,
+	optionalMask2 uint32,
+	optionalMask3 uint64,
+	mediaBaseSn uint16,
+) []byte {
+	/*
+	    0                   1                   2                   3
+	    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+	   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+	   |0|0| P|X|  CC  |M| PT recovery |         length recovery       |
+	   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+	   |                          TS recovery                          |
+	   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+	   |   SSRCCount   |                    reserved                   |
+	   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+	   |                             SSRC_i                            |
+	   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+	   |           SN base_i           |k|          Mask [0-14]        |
+	   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+	   |k|                   Mask [15-45] (optional)                   |
+	   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+	   |k|                                                             |
+	   +-+                   Mask [46-108] (optional)                  |
+	   |                                                               |
+	   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+	   |                     ... next in SSRC_i ...                    |
+	   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+	*/
+
+	// Get header size - This depends on the size of the bitmask.
+	headerSize := BaseFec03HeaderSize
+	if optionalMask2 > 0 || optionalMask3 > 0 {
+		headerSize += 4
+	}
+	if optionalMask3 > 0 {
+		headerSize += 8
+	}
+
+	// Allocate the FlexFec header
+	flexFecHeader := make([]byte, headerSize)
+
+	// We allocate a single temporary buffer to store the mediaPacket bytes. This reduces
+	// overall allocations.
+	tmpMediaPacketBuf := make([]byte, 0)
+	for mediaPackets.HasNext() {
+		mediaPacket := mediaPackets.Next()
+
+		if mediaPacket.MarshalSize() > len(tmpMediaPacketBuf) {
+			// The temporary buffer is too small, we need to resize.
+			tmpMediaPacketBuf = make([]byte, mediaPacket.MarshalSize())
+		}
+		n, err := mediaPacket.MarshalTo(tmpMediaPacketBuf)
+
+		if n == 0 || err != nil {
+			return nil
+		}
+
+		// XOR the first 2 bytes of the header: V, P, X, CC, M, PT fields
+		flexFecHeader[0] ^= tmpMediaPacketBuf[0]
+		flexFecHeader[1] ^= tmpMediaPacketBuf[1]
+
+		// Clear the first 2 bits
+		flexFecHeader[0] &= 0b00111111
+
+		// XOR the length recovery field
+		lengthRecoveryVal := uint16(mediaPacket.MarshalSize() - BaseRTPHeaderSize) //nolint:gosec // G115
+		flexFecHeader[2] ^= uint8(lengthRecoveryVal >> 8)                          //nolint:gosec // G115
+		flexFecHeader[3] ^= uint8(lengthRecoveryVal)                               //nolint:gosec // G115
+
+		// XOR the 5th to 8th bytes of the header: the timestamp field
+		flexFecHeader[4] ^= tmpMediaPacketBuf[4]
+		flexFecHeader[5] ^= tmpMediaPacketBuf[5]
+		flexFecHeader[6] ^= tmpMediaPacketBuf[6]
+		flexFecHeader[7] ^= tmpMediaPacketBuf[7]
+	}
+
+	// Write the SSRC count
+	flexFecHeader[8] = 1
+
+	// Write 0s in reserved
+	flexFecHeader[9] = 0
+	flexFecHeader[10] = 0
+	flexFecHeader[11] = 0
+
+	// Write the SSRC of media packets protected by this FEC packet
+	binary.BigEndian.PutUint32(flexFecHeader[12:16], mediaPackets.First().SSRC)
+
+	// Write the base SN for the batch of media packets
+	binary.BigEndian.PutUint16(flexFecHeader[16:18], mediaBaseSn)
+
+	// Write the bitmasks to the header
+	binary.BigEndian.PutUint16(flexFecHeader[18:20], mask1)
+
+	if optionalMask2 == 0 && optionalMask3 == 0 {
+		flexFecHeader[18] |= 0b10000000
+
+		return flexFecHeader
+	}
+	binary.BigEndian.PutUint32(flexFecHeader[20:24], optionalMask2)
+
+	if optionalMask3 == 0 {
+		flexFecHeader[20] |= 0b10000000
+	} else {
+		binary.BigEndian.PutUint64(flexFecHeader[24:32], optionalMask3)
+		flexFecHeader[24] |= 0b10000000
+	}
+
+	return flexFecHeader
+}
+
+func (flex *FlexEncoder03) encodeFlexFecRepairPayload(mediaPackets *util.MediaPacketIterator) []byte {
+	flexFecPayload := make([]byte, mediaPackets.First().MarshalSize()-BaseRTPHeaderSize)
+	tmpMediaPacketBuf := make([]byte, 0)
+
+	for mediaPackets.HasNext() {
+		mediaPacket := mediaPackets.Next()
+
+		if mediaPacket.MarshalSize() > len(tmpMediaPacketBuf) {
+			tmpMediaPacketBuf = make([]byte, mediaPacket.MarshalSize())
+		}
+
+		n, err := mediaPacket.MarshalTo(tmpMediaPacketBuf)
+
+		if n == 0 || err != nil {
+			return nil
+		}
+
+		if len(flexFecPayload) < mediaPacket.MarshalSize()-BaseRTPHeaderSize {
+			// Expected FEC packet payload is bigger that what we can currently store,
+			// we need to resize.
+			flexFecPayloadTmp := make([]byte, mediaPacket.MarshalSize()-BaseRTPHeaderSize)
+			copy(flexFecPayloadTmp, flexFecPayload)
+			flexFecPayload = flexFecPayloadTmp
+		}
+
+		for byteIndex := 0; byteIndex < mediaPacket.MarshalSize()-BaseRTPHeaderSize; byteIndex++ {
+			flexFecPayload[byteIndex] ^= tmpMediaPacketBuf[byteIndex+BaseRTPHeaderSize]
+		}
+	}
+
+	return flexFecPayload
+}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/flexfec/option.go

@@ -0,0 +1,34 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+package flexfec
+
+// FecOption can be used to set initial options on Fec encoder interceptors.
+type FecOption func(d *FecInterceptor) error
+
+// NumMediaPackets sets the number of media packets to accumulate before generating another FEC packets batch.
+func NumMediaPackets(numMediaPackets uint32) FecOption {
+	return func(f *FecInterceptor) error {
+		f.numMediaPackets = numMediaPackets
+
+		return nil
+	}
+}
+
+// NumFECPackets sets the number of FEC packets to generate for each batch of media packets.
+func NumFECPackets(numFecPackets uint32) FecOption {
+	return func(f *FecInterceptor) error {
+		f.numFecPackets = numFecPackets
+
+		return nil
+	}
+}
+
+// FECEncoderFactory sets the custom factory for constructing the FEC Encoders.
+func FECEncoderFactory(factory EncoderFactory) FecOption {
+	return func(f *FecInterceptor) error {
+		f.encoderFactory = factory
+
+		return nil
+	}
+}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/flexfec/util/bitarray.go

@@ -0,0 +1,47 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+// Package util implements utilities to better support Fec decoding / encoding.
+package util
+
+// BitArray provides support for bitmask manipulations.
+type BitArray struct {
+	Lo uint64 // leftmost 64 bits
+	Hi uint64 // rightmost 64 bits
+}
+
+// SetBit sets a bit to the specified bit value on the bitmask.
+func (b *BitArray) SetBit(bitIndex uint32) {
+	if bitIndex < 64 {
+		b.Lo |= uint64(0b1) << (63 - bitIndex)
+	} else {
+		hiBitIndex := bitIndex - 64
+		b.Hi |= uint64(0b1) << (63 - hiBitIndex)
+	}
+}
+
+// Reset clears the bitmask.
+func (b *BitArray) Reset() {
+	b.Lo = 0
+	b.Hi = 0
+}
+
+// GetBit returns the bit value at a specified index of the bitmask.
+func (b *BitArray) GetBit(bitIndex uint32) uint8 {
+	if bitIndex < 64 {
+		result := (b.Lo & (uint64(0b1) << (63 - bitIndex)))
+		if result > 0 {
+			return 1
+		}
+
+		return 0
+	}
+
+	hiBitIndex := bitIndex - 64
+	result := (b.Hi & (uint64(0b1) << (63 - hiBitIndex)))
+	if result > 0 {
+		return 1
+	}
+
+	return 0
+}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/flexfec/util/media_packet_iterator.go

@@ -0,0 +1,56 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+package util
+
+import "github.com/pion/rtp"
+
+// MediaPacketIterator supports iterating through a list of media packets protected by
+// a specific Fec packet.
+type MediaPacketIterator struct {
+	mediaPackets   []rtp.Packet
+	coveredIndices []uint32
+	nextIndex      int
+}
+
+// NewMediaPacketIterator returns a new MediaPacketIterator.
+func NewMediaPacketIterator(mediaPackets []rtp.Packet, coveredIndices []uint32) *MediaPacketIterator {
+	return &MediaPacketIterator{
+		mediaPackets:   mediaPackets,
+		coveredIndices: coveredIndices,
+		nextIndex:      0,
+	}
+}
+
+// Reset sets the starting iterating index back to 0.
+func (m *MediaPacketIterator) Reset() *MediaPacketIterator {
+	m.nextIndex = 0
+
+	return m
+}
+
+// HasNext indicates whether or not there are more media packets
+// that can be iterated through.
+func (m *MediaPacketIterator) HasNext() bool {
+	return m.nextIndex < len(m.coveredIndices)
+}
+
+// Next returns the next media packet to iterate through.
+func (m *MediaPacketIterator) Next() *rtp.Packet {
+	if m.nextIndex == len(m.coveredIndices) {
+		return nil
+	}
+	packet := m.mediaPackets[m.coveredIndices[m.nextIndex]]
+	m.nextIndex++
+
+	return &packet
+}
+
+// First returns the first media packet to iterate through.
+func (m *MediaPacketIterator) First() *rtp.Packet {
+	if len(m.coveredIndices) == 0 {
+		return nil
+	}
+
+	return &m.mediaPackets[m.coveredIndices[0]]
+}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/nack/errors.go

@@ -3,13 +3,7 @@
 
 package nack
 
-import "errors"
+import "github.com/pion/interceptor/internal/rtpbuffer"
 
-// ErrInvalidSize is returned by newReceiveLog/newSendBuffer, when an incorrect buffer size is supplied.
-var ErrInvalidSize = errors.New("invalid buffer size")
-
-var (
-	errPacketReleased          = errors.New("could not retain packet, already released")
-	errFailedToCastHeaderPool  = errors.New("could not access header pool, failed cast")
-	errFailedToCastPayloadPool = errors.New("could not access payload pool, failed cast")
-)
+// ErrInvalidSize is returned by newReceiveLog/newRTPBuffer, when an incorrect buffer size is supplied.
+var ErrInvalidSize = rtpbuffer.ErrInvalidSize

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/nack/generator_interceptor.go

@@ -13,14 +13,14 @@ import (
 	"github.com/pion/rtcp"
 )
 
-// GeneratorInterceptorFactory is a interceptor.Factory for a GeneratorInterceptor
+// GeneratorInterceptorFactory is a interceptor.Factory for a GeneratorInterceptor.
 type GeneratorInterceptorFactory struct {
 	opts []GeneratorOption
 }
 
-// NewInterceptor constructs a new ReceiverInterceptor
+// NewInterceptor constructs a new ReceiverInterceptor.
 func (g *GeneratorInterceptorFactory) NewInterceptor(_ string) (interceptor.Interceptor, error) {
-	i := &GeneratorInterceptor{
+	generatorInterceptor := &GeneratorInterceptor{
 		streamsFilter:     streamSupportNack,
 		size:              512,
 		skipLastN:         0,
@@ -33,16 +33,16 @@ func (g *GeneratorInterceptorFactory) NewInterceptor(_ string) (interceptor.Inte
 	}
 
 	for _, opt := range g.opts {
-		if err := opt(i); err != nil {
+		if err := opt(generatorInterceptor); err != nil {
 			return nil, err
 		}
 	}
 
-	if _, err := newReceiveLog(i.size); err != nil {
+	if _, err := newReceiveLog(generatorInterceptor.size); err != nil {
 		return nil, err
 	}
 
-	return i, nil
+	return generatorInterceptor, nil
 }
 
 // GeneratorInterceptor interceptor generates nack feedback messages.
@@ -63,13 +63,13 @@ type GeneratorInterceptor struct {
 	receiveLogsMu sync.Mutex
 }
 
-// NewGeneratorInterceptor returns a new GeneratorInterceptorFactory
+// NewGeneratorInterceptor returns a new GeneratorInterceptorFactory.
 func NewGeneratorInterceptor(opts ...GeneratorOption) (*GeneratorInterceptorFactory, error) {
 	return &GeneratorInterceptorFactory{opts}, nil
 }
 
-// BindRTCPWriter lets you modify any outgoing RTCP packets. It is called once per PeerConnection. The returned method
-// will be called once per packet batch.
+// BindRTCPWriter lets you modify any outgoing RTCP packets. It is called once per PeerConnection.
+// The returned method will be called once per packet batch.
 func (n *GeneratorInterceptor) BindRTCPWriter(writer interceptor.RTCPWriter) interceptor.RTCPWriter {
 	n.m.Lock()
 	defer n.m.Unlock()
@@ -85,9 +85,11 @@ func (n *GeneratorInterceptor) BindRTCPWriter(writer interceptor.RTCPWriter) int
 	return writer
 }
 
-// BindRemoteStream lets you modify any incoming RTP packets. It is called once for per RemoteStream. The returned method
-// will be called once per rtp packet.
-func (n *GeneratorInterceptor) BindRemoteStream(info *interceptor.StreamInfo, reader interceptor.RTPReader) interceptor.RTPReader {
+// BindRemoteStream lets you modify any incoming RTP packets. It is called once for per RemoteStream.
+// The returned method will be called once per rtp packet.
+func (n *GeneratorInterceptor) BindRemoteStream(
+	info *interceptor.StreamInfo, reader interceptor.RTPReader,
+) interceptor.RTPReader {
 	if !n.streamsFilter(info) {
 		return reader
 	}
@@ -124,7 +126,7 @@ func (n *GeneratorInterceptor) UnbindRemoteStream(info *interceptor.StreamInfo)
 	n.receiveLogsMu.Unlock()
 }
 
-// Close closes the interceptor
+// Close closes the interceptor.
 func (n *GeneratorInterceptor) Close() error {
 	defer n.wg.Wait()
 	n.m.Lock()
@@ -137,12 +139,15 @@ func (n *GeneratorInterceptor) Close() error {
 	return nil
 }
 
-// nolint:gocognit
+// nolint:gocognit,cyclop
 func (n *GeneratorInterceptor) loop(rtcpWriter interceptor.RTCPWriter) {
 	defer n.wg.Done()
 
 	senderSSRC := rand.Uint32() // #nosec
 
+	missingPacketSeqNums := make([]uint16, n.size)
+	filteredMissingPacket := make([]uint16, n.size)
+
 	ticker := time.NewTicker(n.interval)
 	defer ticker.Stop()
 	for {
@@ -153,7 +158,7 @@ func (n *GeneratorInterceptor) loop(rtcpWriter interceptor.RTCPWriter) {
 				defer n.receiveLogsMu.Unlock()
 
 				for ssrc, receiveLog := range n.receiveLogs {
-					missing := receiveLog.missingSeqNumbers(n.skipLastN)
+					missing := receiveLog.missingSeqNumbers(n.skipLastN, missingPacketSeqNums)
 
 					if len(missing) == 0 || n.nackCountLogs[ssrc] == nil {
 						n.nackCountLogs[ssrc] = map[uint16]uint16{}
@@ -162,22 +167,33 @@ func (n *GeneratorInterceptor) loop(rtcpWriter interceptor.RTCPWriter) {
 						continue
 					}
 
-					filteredMissing := []uint16{}
+					nack := &rtcp.TransportLayerNack{} // nolint:ineffassign,wastedassign
+
+					c := 0 // nolint:varnamelen,
 					if n.maxNacksPerPacket > 0 {
 						for _, missingSeq := range missing {
 							if n.nackCountLogs[ssrc][missingSeq] < n.maxNacksPerPacket {
-								filteredMissing = append(filteredMissing, missingSeq)
+								filteredMissingPacket[c] = missingSeq
+								c++
 							}
 							n.nackCountLogs[ssrc][missingSeq]++
 						}
-					} else {
-						filteredMissing = missing
-					}
 
-					nack := &rtcp.TransportLayerNack{
-						SenderSSRC: senderSSRC,
-						MediaSSRC:  ssrc,
-						Nacks:      rtcp.NackPairsFromSequenceNumbers(filteredMissing),
+						if c == 0 {
+							continue
+						}
+
+						nack = &rtcp.TransportLayerNack{
+							SenderSSRC: senderSSRC,
+							MediaSSRC:  ssrc,
+							Nacks:      rtcp.NackPairsFromSequenceNumbers(filteredMissingPacket[:c]),
+						}
+					} else {
+						nack = &rtcp.TransportLayerNack{
+							SenderSSRC: senderSSRC,
+							MediaSSRC:  ssrc,
+							Nacks:      rtcp.NackPairsFromSequenceNumbers(missing),
+						}
 					}
 
 					for nackSeq := range n.nackCountLogs[ssrc] {
@@ -185,6 +201,7 @@ func (n *GeneratorInterceptor) loop(rtcpWriter interceptor.RTCPWriter) {
 						for _, missingSeq := range missing {
 							if missingSeq == nackSeq {
 								isMissing = true
+
 								break
 							}
 						}
@@ -193,10 +210,6 @@ func (n *GeneratorInterceptor) loop(rtcpWriter interceptor.RTCPWriter) {
 						}
 					}
 
-					if len(filteredMissing) == 0 {
-						continue
-					}
-
 					if _, err := rtcpWriter.Write([]rtcp.Packet{nack}, interceptor.Attributes{}); err != nil {
 						n.log.Warnf("failed sending nack: %+v", err)
 					}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/nack/generator_option.go

@@ -10,56 +10,63 @@ import (
 	"github.com/pion/logging"
 )
 
-// GeneratorOption can be used to configure GeneratorInterceptor
+// GeneratorOption can be used to configure GeneratorInterceptor.
 type GeneratorOption func(r *GeneratorInterceptor) error
 
 // GeneratorSize sets the size of the interceptor.
-// Size must be one of: 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768
+// Size must be one of: 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768.
 func GeneratorSize(size uint16) GeneratorOption {
 	return func(r *GeneratorInterceptor) error {
 		r.size = size
+
 		return nil
 	}
 }
 
-// GeneratorSkipLastN sets the number of packets (n-1 packets before the last received packets) to ignore when generating
-// nack requests.
+// GeneratorSkipLastN sets the number of packets (n-1 packets before the last received packets)
+//
+//	to ignore when generating nack requests.
 func GeneratorSkipLastN(skipLastN uint16) GeneratorOption {
 	return func(r *GeneratorInterceptor) error {
 		r.skipLastN = skipLastN
+
 		return nil
 	}
 }
 
 // GeneratorMaxNacksPerPacket sets the maximum number of NACKs sent per missing packet, e.g. if set to 2, a missing
-// packet will only be NACKed at most twice. If set to 0 (default), max number of NACKs is unlimited
+// packet will only be NACKed at most twice. If set to 0 (default), max number of NACKs is unlimited.
 func GeneratorMaxNacksPerPacket(maxNacks uint16) GeneratorOption {
 	return func(r *GeneratorInterceptor) error {
 		r.maxNacksPerPacket = maxNacks
+
 		return nil
 	}
 }
 
-// GeneratorLog sets a logger for the interceptor
+// GeneratorLog sets a logger for the interceptor.
 func GeneratorLog(log logging.LeveledLogger) GeneratorOption {
 	return func(r *GeneratorInterceptor) error {
 		r.log = log
+
 		return nil
 	}
 }
 
-// GeneratorInterval sets the nack send interval for the interceptor
+// GeneratorInterval sets the nack send interval for the interceptor.
 func GeneratorInterval(interval time.Duration) GeneratorOption {
 	return func(r *GeneratorInterceptor) error {
 		r.interval = interval
+
 		return nil
 	}
 }
 
-// GeneratorStreamsFilter sets filter for generator streams
+// GeneratorStreamsFilter sets filter for generator streams.
 func GeneratorStreamsFilter(filter func(info *interceptor.StreamInfo) bool) GeneratorOption {
 	return func(r *GeneratorInterceptor) error {
 		r.streamsFilter = filter
+
 		return nil
 	}
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/nack/receive_log.go

@@ -6,6 +6,8 @@ package nack
 import (
 	"fmt"
 	"sync"
+
+	"github.com/pion/interceptor/internal/rtpbuffer"
 )
 
 type receiveLog struct {
@@ -23,6 +25,7 @@ func newReceiveLog(size uint16) (*receiveLog, error) {
 	for i := 6; i < 16; i++ {
 		if size == 1<<i {
 			correctSize = true
+
 			break
 		}
 		allowedSizes = append(allowedSizes, 1<<i)
@@ -47,6 +50,7 @@ func (s *receiveLog) add(seq uint16) {
 		s.end = seq
 		s.started = true
 		s.lastConsecutive = seq
+
 		return
 	}
 
@@ -54,7 +58,7 @@ func (s *receiveLog) add(seq uint16) {
 	switch {
 	case diff == 0:
 		return
-	case diff < uint16SizeHalf:
+	case diff < rtpbuffer.Uint16SizeHalf:
 		// this means a positive diff, in other words seq > end (with counting for rollovers)
 		for i := s.end + 1; i != seq; i++ {
 			// clear packets between end and seq (these may contain packets from a "size" ago)
@@ -82,7 +86,7 @@ func (s *receiveLog) get(seq uint16) bool {
 	defer s.m.RUnlock()
 
 	diff := s.end - seq
-	if diff >= uint16SizeHalf {
+	if diff >= rtpbuffer.Uint16SizeHalf {
 		return false
 	}
 
@@ -93,24 +97,25 @@ func (s *receiveLog) get(seq uint16) bool {
 	return s.getReceived(seq)
 }
 
-func (s *receiveLog) missingSeqNumbers(skipLastN uint16) []uint16 {
+func (s *receiveLog) missingSeqNumbers(skipLastN uint16, missingPacketSeqNums []uint16) []uint16 {
 	s.m.RLock()
 	defer s.m.RUnlock()
 
 	until := s.end - skipLastN
-	if until-s.lastConsecutive >= uint16SizeHalf {
+	if until-s.lastConsecutive >= rtpbuffer.Uint16SizeHalf {
 		// until < s.lastConsecutive (counting for rollover)
 		return nil
 	}
 
-	missingPacketSeqNums := make([]uint16, 0)
+	c := 0
 	for i := s.lastConsecutive + 1; i != until+1; i++ {
 		if !s.getReceived(i) {
-			missingPacketSeqNums = append(missingPacketSeqNums, i)
+			missingPacketSeqNums[c] = i
+			c++
 		}
 	}
 
-	return missingPacketSeqNums
+	return missingPacketSeqNums[:c]
 }
 
 func (s *receiveLog) setReceived(seq uint16) {
@@ -125,6 +130,7 @@ func (s *receiveLog) delReceived(seq uint16) {
 
 func (s *receiveLog) getReceived(seq uint16) bool {
 	pos := seq % s.size
+
 	return (s.packets[pos/64] & (1 << (pos % 64))) != 0
 }
 

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/nack/responder_interceptor.go

@@ -7,23 +7,20 @@ import (
 	"sync"
 
 	"github.com/pion/interceptor"
+	"github.com/pion/interceptor/internal/rtpbuffer"
 	"github.com/pion/logging"
 	"github.com/pion/rtcp"
 	"github.com/pion/rtp"
 )
 
-// ResponderInterceptorFactory is a interceptor.Factory for a ResponderInterceptor
+// ResponderInterceptorFactory is a interceptor.Factory for a ResponderInterceptor.
 type ResponderInterceptorFactory struct {
 	opts []ResponderOption
 }
 
-type packetFactory interface {
-	NewPacket(header *rtp.Header, payload []byte, rtxSsrc uint32, rtxPayloadType uint8) (*retainablePacket, error)
-}
-
-// NewInterceptor constructs a new ResponderInterceptor
+// NewInterceptor constructs a new ResponderInterceptor.
 func (r *ResponderInterceptorFactory) NewInterceptor(_ string) (interceptor.Interceptor, error) {
-	i := &ResponderInterceptor{
+	responderInterceptor := &ResponderInterceptor{
 		streamsFilter: streamSupportNack,
 		size:          1024,
 		log:           logging.NewDefaultLoggerFactory().NewLogger("nack_responder"),
@@ -31,40 +28,41 @@ func (r *ResponderInterceptorFactory) NewInterceptor(_ string) (interceptor.Inte
 	}
 
 	for _, opt := range r.opts {
-		if err := opt(i); err != nil {
+		if err := opt(responderInterceptor); err != nil {
 			return nil, err
 		}
 	}
 
-	if i.packetFactory == nil {
-		i.packetFactory = newPacketManager()
+	if responderInterceptor.packetFactory == nil {
+		responderInterceptor.packetFactory = rtpbuffer.NewPacketFactoryCopy()
 	}
 
-	if _, err := newSendBuffer(i.size); err != nil {
+	if _, err := rtpbuffer.NewRTPBuffer(responderInterceptor.size); err != nil {
 		return nil, err
 	}
 
-	return i, nil
+	return responderInterceptor, nil
 }
 
-// ResponderInterceptor responds to nack feedback messages
+// ResponderInterceptor responds to nack feedback messages.
 type ResponderInterceptor struct {
 	interceptor.NoOp
 	streamsFilter func(info *interceptor.StreamInfo) bool
 	size          uint16
 	log           logging.LeveledLogger
-	packetFactory packetFactory
+	packetFactory rtpbuffer.PacketFactory
 
 	streams   map[uint32]*localStream
 	streamsMu sync.Mutex
 }
 
 type localStream struct {
-	sendBuffer *sendBuffer
-	rtpWriter  interceptor.RTPWriter
+	rtpBuffer      *rtpbuffer.RTPBuffer
+	rtpBufferMutex sync.RWMutex
+	rtpWriter      interceptor.RTPWriter
 }
 
-// NewResponderInterceptor returns a new ResponderInterceptorFactor
+// NewResponderInterceptor returns a new ResponderInterceptorFactor.
 func NewResponderInterceptor(opts ...ResponderOption) (*ResponderInterceptorFactory, error) {
 	return &ResponderInterceptorFactory{opts}, nil
 }
@@ -98,30 +96,44 @@ func (n *ResponderInterceptor) BindRTCPReader(reader interceptor.RTCPReader) int
 	})
 }
 
-// BindLocalStream lets you modify any outgoing RTP packets. It is called once for per LocalStream. The returned method
-// will be called once per rtp packet.
-func (n *ResponderInterceptor) BindLocalStream(info *interceptor.StreamInfo, writer interceptor.RTPWriter) interceptor.RTPWriter {
+// BindLocalStream lets you modify any outgoing RTP packets. It is called once for per LocalStream.
+// The returned method will be called once per rtp packet.
+func (n *ResponderInterceptor) BindLocalStream(
+	info *interceptor.StreamInfo, writer interceptor.RTPWriter,
+) interceptor.RTPWriter {
 	if !n.streamsFilter(info) {
 		return writer
 	}
 
 	// error is already checked in NewGeneratorInterceptor
-	sendBuffer, _ := newSendBuffer(n.size)
-	n.streamsMu.Lock()
-	n.streams[info.SSRC] = &localStream{
-		sendBuffer: sendBuffer,
-		rtpWriter:  writer,
+	rtpBuffer, _ := rtpbuffer.NewRTPBuffer(n.size)
+	stream := &localStream{
+		rtpBuffer: rtpBuffer,
+		rtpWriter: writer,
 	}
+	n.streamsMu.Lock()
+	n.streams[info.SSRC] = stream
 	n.streamsMu.Unlock()
 
-	return interceptor.RTPWriterFunc(func(header *rtp.Header, payload []byte, attributes interceptor.Attributes) (int, error) {
-		pkt, err := n.packetFactory.NewPacket(header, payload, info.SSRCRetransmission, info.PayloadTypeRetransmission)
-		if err != nil {
-			return 0, err
-		}
-		sendBuffer.add(pkt)
-		return writer.Write(header, payload, attributes)
-	})
+	return interceptor.RTPWriterFunc(
+		func(header *rtp.Header, payload []byte, attributes interceptor.Attributes) (int, error) {
+			// If this packet doesn't belong to the main SSRC, do not add it to rtpBuffer
+			if header.SSRC != info.SSRC {
+				return writer.Write(header, payload, attributes)
+			}
+
+			pkt, err := n.packetFactory.NewPacket(header, payload, info.SSRCRetransmission, info.PayloadTypeRetransmission)
+			if err != nil {
+				return 0, err
+			}
+			stream.rtpBufferMutex.Lock()
+			defer stream.rtpBufferMutex.Unlock()
+
+			rtpBuffer.Add(pkt)
+
+			return writer.Write(header, payload, attributes)
+		},
+	)
 }
 
 // UnbindLocalStream is called when the Stream is removed. It can be used to clean up any data related to that track.
@@ -141,7 +153,10 @@ func (n *ResponderInterceptor) resendPackets(nack *rtcp.TransportLayerNack) {
 
 	for i := range nack.Nacks {
 		nack.Nacks[i].Range(func(seq uint16) bool {
-			if p := stream.sendBuffer.get(seq); p != nil {
+			stream.rtpBufferMutex.Lock()
+			defer stream.rtpBufferMutex.Unlock()
+
+			if p := stream.rtpBuffer.Get(seq); p != nil {
 				if _, err := stream.rtpWriter.Write(p.Header(), p.Payload(), interceptor.Attributes{}); err != nil {
 					n.log.Warnf("failed resending nacked packet: %+v", err)
 				}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/nack/responder_option.go

@@ -5,42 +5,47 @@ package nack
 
 import (
 	"github.com/pion/interceptor"
+	"github.com/pion/interceptor/internal/rtpbuffer"
 	"github.com/pion/logging"
 )
 
-// ResponderOption can be used to configure ResponderInterceptor
+// ResponderOption can be used to configure ResponderInterceptor.
 type ResponderOption func(s *ResponderInterceptor) error
 
 // ResponderSize sets the size of the interceptor.
-// Size must be one of: 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768
+// Size must be one of: 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768.
 func ResponderSize(size uint16) ResponderOption {
 	return func(r *ResponderInterceptor) error {
 		r.size = size
+
 		return nil
 	}
 }
 
-// ResponderLog sets a logger for the interceptor
+// ResponderLog sets a logger for the interceptor.
 func ResponderLog(log logging.LeveledLogger) ResponderOption {
 	return func(r *ResponderInterceptor) error {
 		r.log = log
+
 		return nil
 	}
 }
 
 // DisableCopy bypasses copy of underlying packets. It should be used when
-// you are not re-using underlying buffers of packets that have been written
+// you are not re-using underlying buffers of packets that have been written.
 func DisableCopy() ResponderOption {
 	return func(s *ResponderInterceptor) error {
-		s.packetFactory = &noOpPacketFactory{}
+		s.packetFactory = &rtpbuffer.PacketFactoryNoOp{}
+
 		return nil
 	}
 }
 
-// ResponderStreamsFilter sets filter for local streams
+// ResponderStreamsFilter sets filter for local streams.
 func ResponderStreamsFilter(filter func(info *interceptor.StreamInfo) bool) ResponderOption {
 	return func(r *ResponderInterceptor) error {
 		r.streamsFilter = filter
+
 		return nil
 	}
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/nack/retainable_packet.go

@@ -1,162 +0,0 @@
-// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
-// SPDX-License-Identifier: MIT
-
-package nack
-
-import (
-	"encoding/binary"
-	"io"
-	"sync"
-
-	"github.com/pion/rtp"
-)
-
-const maxPayloadLen = 1460
-
-type packetManager struct {
-	headerPool   *sync.Pool
-	payloadPool  *sync.Pool
-	rtxSequencer rtp.Sequencer
-}
-
-func newPacketManager() *packetManager {
-	return &packetManager{
-		headerPool: &sync.Pool{
-			New: func() interface{} {
-				return &rtp.Header{}
-			},
-		},
-		payloadPool: &sync.Pool{
-			New: func() interface{} {
-				buf := make([]byte, maxPayloadLen)
-				return &buf
-			},
-		},
-		rtxSequencer: rtp.NewRandomSequencer(),
-	}
-}
-
-func (m *packetManager) NewPacket(header *rtp.Header, payload []byte, rtxSsrc uint32, rtxPayloadType uint8) (*retainablePacket, error) {
-	if len(payload) > maxPayloadLen {
-		return nil, io.ErrShortBuffer
-	}
-
-	p := &retainablePacket{
-		onRelease:      m.releasePacket,
-		sequenceNumber: header.SequenceNumber,
-		// new packets have retain count of 1
-		count: 1,
-	}
-
-	var ok bool
-	p.header, ok = m.headerPool.Get().(*rtp.Header)
-	if !ok {
-		return nil, errFailedToCastHeaderPool
-	}
-
-	*p.header = header.Clone()
-
-	if payload != nil {
-		p.buffer, ok = m.payloadPool.Get().(*[]byte)
-		if !ok {
-			return nil, errFailedToCastPayloadPool
-		}
-
-		size := copy(*p.buffer, payload)
-		p.payload = (*p.buffer)[:size]
-	}
-
-	if rtxSsrc != 0 && rtxPayloadType != 0 {
-		// Store the original sequence number and rewrite the sequence number.
-		originalSequenceNumber := p.header.SequenceNumber
-		p.header.SequenceNumber = m.rtxSequencer.NextSequenceNumber()
-
-		// Rewrite the SSRC.
-		p.header.SSRC = rtxSsrc
-		// Rewrite the payload type.
-		p.header.PayloadType = rtxPayloadType
-
-		// Remove padding if present.
-		paddingLength := 0
-		if p.header.Padding && p.payload != nil && len(p.payload) > 0 {
-			paddingLength = int(p.payload[len(p.payload)-1])
-			p.header.Padding = false
-		}
-
-		// Write the original sequence number at the beginning of the payload.
-		payload := make([]byte, 2)
-		binary.BigEndian.PutUint16(payload, originalSequenceNumber)
-		p.payload = append(payload, p.payload[:len(p.payload)-paddingLength]...)
-	}
-
-	return p, nil
-}
-
-func (m *packetManager) releasePacket(header *rtp.Header, payload *[]byte) {
-	m.headerPool.Put(header)
-	if payload != nil {
-		m.payloadPool.Put(payload)
-	}
-}
-
-type noOpPacketFactory struct{}
-
-func (f *noOpPacketFactory) NewPacket(header *rtp.Header, payload []byte, _ uint32, _ uint8) (*retainablePacket, error) {
-	return &retainablePacket{
-		onRelease:      f.releasePacket,
-		count:          1,
-		header:         header,
-		payload:        payload,
-		sequenceNumber: header.SequenceNumber,
-	}, nil
-}
-
-func (f *noOpPacketFactory) releasePacket(_ *rtp.Header, _ *[]byte) {
-	// no-op
-}
-
-type retainablePacket struct {
-	onRelease func(*rtp.Header, *[]byte)
-
-	countMu sync.Mutex
-	count   int
-
-	header  *rtp.Header
-	buffer  *[]byte
-	payload []byte
-
-	sequenceNumber uint16
-}
-
-func (p *retainablePacket) Header() *rtp.Header {
-	return p.header
-}
-
-func (p *retainablePacket) Payload() []byte {
-	return p.payload
-}
-
-func (p *retainablePacket) Retain() error {
-	p.countMu.Lock()
-	defer p.countMu.Unlock()
-	if p.count == 0 {
-		// already released
-		return errPacketReleased
-	}
-	p.count++
-	return nil
-}
-
-func (p *retainablePacket) Release() {
-	p.countMu.Lock()
-	defer p.countMu.Unlock()
-	p.count--
-
-	if p.count == 0 {
-		// release back to pool
-		p.onRelease(p.header, p.buffer)
-		p.header = nil
-		p.buffer = nil
-		p.payload = nil
-	}
-}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/nack/send_buffer.go

@@ -1,104 +0,0 @@
-// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
-// SPDX-License-Identifier: MIT
-
-package nack
-
-import (
-	"fmt"
-	"sync"
-)
-
-const (
-	uint16SizeHalf = 1 << 15
-)
-
-type sendBuffer struct {
-	packets   []*retainablePacket
-	size      uint16
-	lastAdded uint16
-	started   bool
-
-	m sync.RWMutex
-}
-
-func newSendBuffer(size uint16) (*sendBuffer, error) {
-	allowedSizes := make([]uint16, 0)
-	correctSize := false
-	for i := 0; i < 16; i++ {
-		if size == 1<<i {
-			correctSize = true
-			break
-		}
-		allowedSizes = append(allowedSizes, 1<<i)
-	}
-
-	if !correctSize {
-		return nil, fmt.Errorf("%w: %d is not a valid size, allowed sizes: %v", ErrInvalidSize, size, allowedSizes)
-	}
-
-	return &sendBuffer{
-		packets: make([]*retainablePacket, size),
-		size:    size,
-	}, nil
-}
-
-func (s *sendBuffer) add(packet *retainablePacket) {
-	s.m.Lock()
-	defer s.m.Unlock()
-
-	seq := packet.sequenceNumber
-	if !s.started {
-		s.packets[seq%s.size] = packet
-		s.lastAdded = seq
-		s.started = true
-		return
-	}
-
-	diff := seq - s.lastAdded
-	if diff == 0 {
-		return
-	} else if diff < uint16SizeHalf {
-		for i := s.lastAdded + 1; i != seq; i++ {
-			idx := i % s.size
-			prevPacket := s.packets[idx]
-			if prevPacket != nil {
-				prevPacket.Release()
-			}
-			s.packets[idx] = nil
-		}
-	}
-
-	idx := seq % s.size
-	prevPacket := s.packets[idx]
-	if prevPacket != nil {
-		prevPacket.Release()
-	}
-	s.packets[idx] = packet
-	s.lastAdded = seq
-}
-
-func (s *sendBuffer) get(seq uint16) *retainablePacket {
-	s.m.RLock()
-	defer s.m.RUnlock()
-
-	diff := s.lastAdded - seq
-	if diff >= uint16SizeHalf {
-		return nil
-	}
-
-	if diff >= s.size {
-		return nil
-	}
-
-	pkt := s.packets[seq%s.size]
-	if pkt != nil {
-		if pkt.sequenceNumber != seq {
-			return nil
-		}
-		// already released
-		if err := pkt.Retain(); err != nil {
-			return nil
-		}
-	}
-	return pkt
-}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/report/receiver_interceptor.go

@@ -12,14 +12,14 @@ import (
 	"github.com/pion/rtcp"
 )
 
-// ReceiverInterceptorFactory is a interceptor.Factory for a ReceiverInterceptor
+// ReceiverInterceptorFactory is a interceptor.Factory for a ReceiverInterceptor.
 type ReceiverInterceptorFactory struct {
 	opts []ReceiverOption
 }
 
-// NewInterceptor constructs a new ReceiverInterceptor
+// NewInterceptor constructs a new ReceiverInterceptor.
 func (r *ReceiverInterceptorFactory) NewInterceptor(_ string) (interceptor.Interceptor, error) {
-	i := &ReceiverInterceptor{
+	receiverInterceptor := &ReceiverInterceptor{
 		interval: 1 * time.Second,
 		now:      time.Now,
 		log:      logging.NewDefaultLoggerFactory().NewLogger("receiver_interceptor"),
@@ -27,15 +27,15 @@ func (r *ReceiverInterceptorFactory) NewInterceptor(_ string) (interceptor.Inter
 	}
 
 	for _, opt := range r.opts {
-		if err := opt(i); err != nil {
+		if err := opt(receiverInterceptor); err != nil {
 			return nil, err
 		}
 	}
 
-	return i, nil
+	return receiverInterceptor, nil
 }
 
-// NewReceiverInterceptor returns a new ReceiverInterceptorFactory
+// NewReceiverInterceptor returns a new ReceiverInterceptorFactory.
 func NewReceiverInterceptor(opts ...ReceiverOption) (*ReceiverInterceptorFactory, error) {
 	return &ReceiverInterceptorFactory{opts}, nil
 }
@@ -103,7 +103,9 @@ func (r *ReceiverInterceptor) loop(rtcpWriter interceptor.RTCPWriter) {
 			r.streams.Range(func(_, value interface{}) bool {
 				if stream, ok := value.(*receiverStream); !ok {
 					r.log.Warnf("failed to cast ReceiverInterceptor stream")
-				} else if _, err := rtcpWriter.Write([]rtcp.Packet{stream.generateReport(now)}, interceptor.Attributes{}); err != nil {
+				} else if _, err := rtcpWriter.Write(
+					[]rtcp.Packet{stream.generateReport(now)}, interceptor.Attributes{},
+				); err != nil {
 					r.log.Warnf("failed sending: %+v", err)
 				}
 
@@ -116,9 +118,11 @@ func (r *ReceiverInterceptor) loop(rtcpWriter interceptor.RTCPWriter) {
 	}
 }
 
-// BindRemoteStream lets you modify any incoming RTP packets. It is called once for per RemoteStream. The returned method
-// will be called once per rtp packet.
-func (r *ReceiverInterceptor) BindRemoteStream(info *interceptor.StreamInfo, reader interceptor.RTPReader) interceptor.RTPReader {
+// BindRemoteStream lets you modify any incoming RTP packets. It is called once for per RemoteStream.
+// The returned method will be called once per rtp packet.
+func (r *ReceiverInterceptor) BindRemoteStream(
+	info *interceptor.StreamInfo, reader interceptor.RTPReader,
+) interceptor.RTPReader {
 	stream := newReceiverStream(info.SSRC, info.ClockRate)
 	r.streams.Store(info.SSRC, stream)
 

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/report/receiver_option.go

@@ -16,6 +16,7 @@ type ReceiverOption func(r *ReceiverInterceptor) error
 func ReceiverLog(log logging.LeveledLogger) ReceiverOption {
 	return func(r *ReceiverInterceptor) error {
 		r.log = log
+
 		return nil
 	}
 }
@@ -24,6 +25,7 @@ func ReceiverLog(log logging.LeveledLogger) ReceiverOption {
 func ReceiverInterval(interval time.Duration) ReceiverOption {
 	return func(r *ReceiverInterceptor) error {
 		r.interval = interval
+
 		return nil
 	}
 }
@@ -32,6 +34,7 @@ func ReceiverInterval(interval time.Duration) ReceiverOption {
 func ReceiverNow(f func() time.Time) ReceiverOption {
 	return func(r *ReceiverInterceptor) error {
 		r.now = f
+
 		return nil
 	}
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/report/receiver_stream.go

@@ -41,6 +41,7 @@ type receiverStream struct {
 
 func newReceiverStream(ssrc uint32, clockRate uint32) *receiverStream {
 	receiverSSRC := rand.Uint32() // #nosec
+
 	return &receiverStream{
 		ssrc:         ssrc,
 		receiverSSRC: receiverSSRC,
@@ -54,6 +55,7 @@ func (stream *receiverStream) processRTP(now time.Time, pktHeader *rtp.Header) {
 	stream.m.Lock()
 	defer stream.m.Unlock()
 
+	//nolint:nestif
 	if !stream.started { // first frame
 		stream.started = true
 		stream.setReceived(pktHeader.SequenceNumber)
@@ -104,6 +106,7 @@ func (stream *receiverStream) delReceived(seq uint16) {
 
 func (stream *receiverStream) getReceived(seq uint16) bool {
 	pos := seq % (stream.size * packetsPerHistoryEntry)
+
 	return (stream.packets[pos/packetsPerHistoryEntry] & (1 << (pos % packetsPerHistoryEntry))) != 0
 }
 
@@ -111,7 +114,7 @@ func (stream *receiverStream) processSenderReport(now time.Time, sr *rtcp.Sender
 	stream.m.Lock()
 	defer stream.m.Unlock()
 
-	stream.lastSenderReport = uint32(sr.NTPTime >> 16)
+	stream.lastSenderReport = uint32(sr.NTPTime >> 16) //nolint:gosec // G115
 	stream.lastSenderReportTime = now
 }
 
@@ -131,6 +134,7 @@ func (stream *receiverStream) generateReport(now time.Time) *rtcp.ReceiverReport
 				ret++
 			}
 		}
+
 		return ret
 	}()
 	stream.totalLost += totalLostSinceReport
@@ -143,7 +147,7 @@ func (stream *receiverStream) generateReport(now time.Time) *rtcp.ReceiverReport
 		stream.totalLost = 0xFFFFFF
 	}
 
-	r := &rtcp.ReceiverReport{
+	receiverReport := &rtcp.ReceiverReport{
 		SSRC: stream.receiverSSRC,
 		Reports: []rtcp.ReceptionReport{
 			{
@@ -156,6 +160,7 @@ func (stream *receiverStream) generateReport(now time.Time) *rtcp.ReceiverReport
 					if stream.lastSenderReportTime.IsZero() {
 						return 0
 					}
+
 					return uint32(now.Sub(stream.lastSenderReportTime).Seconds() * 65536)
 				}(),
 				Jitter: uint32(stream.jitter),
@@ -165,5 +170,5 @@ func (stream *receiverStream) generateReport(now time.Time) *rtcp.ReceiverReport
 
 	stream.lastReportSeqnum = stream.lastSeqnum
 
-	return r
+	return receiverReport
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/report/sender_interceptor.go

@@ -13,17 +13,17 @@ import (
 	"github.com/pion/rtp"
 )
 
-// TickerFactory is a factory to create new tickers
+// TickerFactory is a factory to create new tickers.
 type TickerFactory func(d time.Duration) Ticker
 
-// SenderInterceptorFactory is a interceptor.Factory for a SenderInterceptor
+// SenderInterceptorFactory is a interceptor.Factory for a SenderInterceptor.
 type SenderInterceptorFactory struct {
 	opts []SenderOption
 }
 
-// NewInterceptor constructs a new SenderInterceptor
+// NewInterceptor constructs a new SenderInterceptor.
 func (s *SenderInterceptorFactory) NewInterceptor(_ string) (interceptor.Interceptor, error) {
-	i := &SenderInterceptor{
+	senderInterceptor := &SenderInterceptor{
 		interval: 1 * time.Second,
 		now:      time.Now,
 		newTicker: func(d time.Duration) Ticker {
@@ -34,15 +34,15 @@ func (s *SenderInterceptorFactory) NewInterceptor(_ string) (interceptor.Interce
 	}
 
 	for _, opt := range s.opts {
-		if err := opt(i); err != nil {
+		if err := opt(senderInterceptor); err != nil {
 			return nil, err
 		}
 	}
 
-	return i, nil
+	return senderInterceptor, nil
 }
 
-// NewSenderInterceptor returns a new SenderInterceptorFactory
+// NewSenderInterceptor returns a new SenderInterceptorFactory.
 func NewSenderInterceptor(opts ...SenderOption) (*SenderInterceptorFactory, error) {
 	return &SenderInterceptorFactory{opts}, nil
 }
@@ -119,7 +119,9 @@ func (s *SenderInterceptor) loop(rtcpWriter interceptor.RTCPWriter) {
 			s.streams.Range(func(_, value interface{}) bool {
 				if stream, ok := value.(*senderStream); !ok {
 					s.log.Warnf("failed to cast SenderInterceptor stream")
-				} else if _, err := rtcpWriter.Write([]rtcp.Packet{stream.generateReport(now)}, interceptor.Attributes{}); err != nil {
+				} else if _, err := rtcpWriter.Write(
+					[]rtcp.Packet{stream.generateReport(now)}, interceptor.Attributes{},
+				); err != nil {
 					s.log.Warnf("failed sending: %+v", err)
 				}
 
@@ -134,7 +136,9 @@ func (s *SenderInterceptor) loop(rtcpWriter interceptor.RTCPWriter) {
 
 // BindLocalStream lets you modify any outgoing RTP packets. It is called once for per LocalStream. The returned method
 // will be called once per rtp packet.
-func (s *SenderInterceptor) BindLocalStream(info *interceptor.StreamInfo, writer interceptor.RTPWriter) interceptor.RTPWriter {
+func (s *SenderInterceptor) BindLocalStream(
+	info *interceptor.StreamInfo, writer interceptor.RTPWriter,
+) interceptor.RTPWriter {
 	stream := newSenderStream(info.SSRC, info.ClockRate, s.useLatestPacket)
 	s.streams.Store(info.SSRC, stream)
 

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/report/sender_option.go

@@ -16,6 +16,7 @@ type SenderOption func(r *SenderInterceptor) error
 func SenderLog(log logging.LeveledLogger) SenderOption {
 	return func(r *SenderInterceptor) error {
 		r.log = log
+
 		return nil
 	}
 }
@@ -24,6 +25,7 @@ func SenderLog(log logging.LeveledLogger) SenderOption {
 func SenderInterval(interval time.Duration) SenderOption {
 	return func(r *SenderInterceptor) error {
 		r.interval = interval
+
 		return nil
 	}
 }
@@ -32,6 +34,7 @@ func SenderInterval(interval time.Duration) SenderOption {
 func SenderNow(f func() time.Time) SenderOption {
 	return func(r *SenderInterceptor) error {
 		r.now = f
+
 		return nil
 	}
 }
@@ -40,6 +43,7 @@ func SenderNow(f func() time.Time) SenderOption {
 func SenderTicker(f TickerFactory) SenderOption {
 	return func(r *SenderInterceptor) error {
 		r.newTicker = f
+
 		return nil
 	}
 }
@@ -49,6 +53,7 @@ func SenderTicker(f TickerFactory) SenderOption {
 func SenderUseLatestPacket() SenderOption {
 	return func(r *SenderInterceptor) error {
 		r.useLatestPacket = true
+
 		return nil
 	}
 }
@@ -58,6 +63,7 @@ func SenderUseLatestPacket() SenderOption {
 func enableStartTracking(startedCh chan struct{}) SenderOption {
 	return func(r *SenderInterceptor) error {
 		r.started = startedCh
+
 		return nil
 	}
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/report/sender_stream.go

@@ -48,7 +48,7 @@ func (stream *senderStream) processRTP(now time.Time, header *rtp.Header, payloa
 	}
 
 	stream.packetCount++
-	stream.octetCount += uint32(len(payload))
+	stream.octetCount += uint32(len(payload)) //nolint:gosec // G115
 }
 
 func (stream *senderStream) generateReport(now time.Time) *rtcp.SenderReport {

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/rfc8888/interceptor.go

@@ -14,17 +14,17 @@ import (
 	"github.com/pion/rtcp"
 )
 
-// TickerFactory is a factory to create new tickers
+// TickerFactory is a factory to create new tickers.
 type TickerFactory func(d time.Duration) ticker
 
-// SenderInterceptorFactory is a interceptor.Factory for a SenderInterceptor
+// SenderInterceptorFactory is a interceptor.Factory for a SenderInterceptor.
 type SenderInterceptorFactory struct {
 	opts []Option
 }
 
-// NewInterceptor constructs a new SenderInterceptor
+// NewInterceptor constructs a new SenderInterceptor.
 func (s *SenderInterceptorFactory) NewInterceptor(_ string) (interceptor.Interceptor, error) {
-	i := &SenderInterceptor{
+	senderInterceptor := &SenderInterceptor{
 		NoOp:          interceptor.NoOp{},
 		log:           logging.NewDefaultLoggerFactory().NewLogger("rfc8888_interceptor"),
 		lock:          sync.Mutex{},
@@ -40,12 +40,13 @@ func (s *SenderInterceptorFactory) NewInterceptor(_ string) (interceptor.Interce
 		close: make(chan struct{}),
 	}
 	for _, opt := range s.opts {
-		err := opt(i)
+		err := opt(senderInterceptor)
 		if err != nil {
 			return nil, err
 		}
 	}
-	return i, nil
+
+	return senderInterceptor, nil
 }
 
 // NewSenderInterceptor returns a new SenderInterceptorFactory configured with the given options.
@@ -91,9 +92,12 @@ func (s *SenderInterceptor) BindRTCPWriter(writer interceptor.RTCPWriter) interc
 	return writer
 }
 
-// BindRemoteStream lets you modify any incoming RTP packets. It is called once for per RemoteStream. The returned method
-// will be called once per rtp packet.
-func (s *SenderInterceptor) BindRemoteStream(_ *interceptor.StreamInfo, reader interceptor.RTPReader) interceptor.RTPReader {
+// BindRemoteStream lets you modify any incoming RTP packets.
+// It is called once for per RemoteStream. The returned method
+// will be called once per rtp packet..
+func (s *SenderInterceptor) BindRemoteStream(
+	_ *interceptor.StreamInfo, reader interceptor.RTPReader,
+) interceptor.RTPReader {
 	return interceptor.RTPReaderFunc(func(b []byte, a interceptor.Attributes) (int, interceptor.Attributes, error) {
 		i, attr, err := reader.Read(b, a)
 		if err != nil {
@@ -115,6 +119,7 @@ func (s *SenderInterceptor) BindRemoteStream(_ *interceptor.StreamInfo, reader i
 			ecn:            0, // ECN is not supported (yet).
 		}
 		s.packetChan <- p
+
 		return i, attr, nil
 	})
 }
@@ -157,16 +162,19 @@ func (s *SenderInterceptor) loop(writer interceptor.RTCPWriter) {
 		select {
 		case <-s.close:
 			t.Stop()
+
 			return
 
 		case pkt := <-s.packetChan:
 			s.log.Tracef("got packet: %v", pkt)
 			s.recorder.AddPacket(pkt.arrival, pkt.ssrc, pkt.sequenceNumber, pkt.ecn)
 
-		case now := <-t.Ch():
+		case <-t.Ch():
+			now := s.now()
 			s.log.Tracef("report triggered at %v", now)
 			if writer == nil {
 				s.log.Trace("no writer added, continue")
+
 				continue
 			}
 			pkts := s.recorder.BuildReport(now, int(s.maxReportSize))

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/rfc8888/option.go

@@ -5,13 +5,14 @@ package rfc8888
 
 import "time"
 
-// An Option is a function that can be used to configure a SenderInterceptor
+// An Option is a function that can be used to configure a SenderInterceptor.
 type Option func(*SenderInterceptor) error
 
 // SenderTicker sets an alternative for time.Ticker.
 func SenderTicker(f TickerFactory) Option {
 	return func(i *SenderInterceptor) error {
 		i.newTicker = f
+
 		return nil
 	}
 }
@@ -20,14 +21,16 @@ func SenderTicker(f TickerFactory) Option {
 func SenderNow(f func() time.Time) Option {
 	return func(i *SenderInterceptor) error {
 		i.now = f
+
 		return nil
 	}
 }
 
-// SendInterval sets the feedback send interval for the interceptor
+// SendInterval sets the feedback send interval for the interceptor.
 func SendInterval(interval time.Duration) Option {
 	return func(s *SenderInterceptor) error {
 		s.interval = interval
+
 		return nil
 	}
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/rfc8888/recorder.go

@@ -6,6 +6,7 @@ package rfc8888
 import (
 	"time"
 
+	"github.com/pion/interceptor/internal/ntp"
 	"github.com/pion/rtcp"
 )
 
@@ -21,7 +22,7 @@ type Recorder struct {
 	streams map[uint32]*streamLog
 }
 
-// NewRecorder creates a new Recorder
+// NewRecorder creates a new Recorder.
 func NewRecorder() *Recorder {
 	return &Recorder{
 		streams: map[uint32]*streamLog{},
@@ -44,7 +45,7 @@ func (r *Recorder) BuildReport(now time.Time, maxSize int) *rtcp.CCFeedbackRepor
 	report := &rtcp.CCFeedbackReport{
 		SenderSSRC:      r.ssrc,
 		ReportBlocks:    []rtcp.CCFeedbackReportBlock{},
-		ReportTimestamp: ntpTime32(now),
+		ReportTimestamp: ntp.ToNTP32(now),
 	}
 
 	maxReportBlocks := (maxSize - 12 - (8 * len(r.streams))) / 2
@@ -65,14 +66,3 @@ func (r *Recorder) BuildReport(now time.Time, maxSize int) *rtcp.CCFeedbackRepor
 
 	return report
 }
-
-func ntpTime32(t time.Time) uint32 {
-	// seconds since 1st January 1900
-	s := (float64(t.UnixNano()) / 1000000000.0) + 2208988800
-
-	integerPart := uint32(s)
-	fractionalPart := uint32((s - float64(integerPart)) * 0xFFFFFFFF)
-
-	// higher 32 bits are the integer part, lower 32 bits are the fractional part
-	return uint32(((uint64(integerPart)<<32 | uint64(fractionalPart)) >> 16) & 0xFFFFFFFF)
-}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/rfc8888/stream_log.go

@@ -6,6 +6,7 @@ package rfc8888
 import (
 	"time"
 
+	"github.com/pion/interceptor/internal/sequencenumber"
 	"github.com/pion/rtcp"
 )
 
@@ -13,7 +14,7 @@ const maxReportsPerReportBlock = 16384
 
 type streamLog struct {
 	ssrc                       uint32
-	sequence                   unwrapper
+	sequence                   sequencenumber.Unwrapper
 	init                       bool
 	nextSequenceNumberToReport int64 // next to report
 	lastSequenceNumberReceived int64 // highest received
@@ -23,7 +24,7 @@ type streamLog struct {
 func newStreamLog(ssrc uint32) *streamLog {
 	return &streamLog{
 		ssrc:                       ssrc,
-		sequence:                   unwrapper{},
+		sequence:                   sequencenumber.Unwrapper{},
 		init:                       false,
 		nextSequenceNumberToReport: 0,
 		lastSequenceNumberReceived: 0,
@@ -32,7 +33,7 @@ func newStreamLog(ssrc uint32) *streamLog {
 }
 
 func (l *streamLog) add(ts time.Time, sequenceNumber uint16, ecn uint8) {
-	unwrappedSequenceNumber := l.sequence.unwrap(sequenceNumber)
+	unwrappedSequenceNumber := l.sequence.Unwrap(sequenceNumber)
 	if !l.init {
 		l.init = true
 		l.nextSequenceNumberToReport = unwrappedSequenceNumber
@@ -52,7 +53,7 @@ func (l *streamLog) metricsAfter(reference time.Time, maxReportBlocks int64) rtc
 	if len(l.log) == 0 {
 		return rtcp.CCFeedbackReportBlock{
 			MediaSSRC:     l.ssrc,
-			BeginSequence: uint16(l.nextSequenceNumberToReport),
+			BeginSequence: uint16(l.nextSequenceNumberToReport), //nolint:gosec // G115
 			MetricBlocks:  []rtcp.CCFeedbackMetricBlock{},
 		}
 	}
@@ -65,7 +66,7 @@ func (l *streamLog) metricsAfter(reference time.Time, maxReportBlocks int64) rtc
 	offset := l.nextSequenceNumberToReport
 	lastReceived := l.nextSequenceNumberToReport
 	gapDetected := false
-	for i := offset; i <= l.lastSequenceNumberReceived; i++ {
+	for i := offset; i <= l.lastSequenceNumberReceived; i++ { //nolint:varnamelen // i int64
 		received := false
 		ecn := uint8(0)
 		ato := uint16(0)
@@ -91,9 +92,10 @@ func (l *streamLog) metricsAfter(reference time.Time, maxReportBlocks int64) rtc
 			}
 		}
 	}
+
 	return rtcp.CCFeedbackReportBlock{
 		MediaSSRC:     l.ssrc,
-		BeginSequence: uint16(offset),
+		BeginSequence: uint16(offset), //nolint:gosec // G115
 		MetricBlocks:  metricBlocks,
 	}
 }
@@ -106,5 +108,6 @@ func getArrivalTimeOffset(base time.Time, arrival time.Time) uint16 {
 	if ato > 0x1FFD {
 		return 0x1FFE
 	}
+
 	return ato
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/rfc8888/unwrapper.go

@@ -1,42 +0,0 @@
-// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
-// SPDX-License-Identifier: MIT
-
-package rfc8888
-
-const (
-	maxSequenceNumberPlusOne = int64(65536)
-	breakpoint               = 32768 // half of max uint16
-)
-
-type unwrapper struct {
-	init          bool
-	lastUnwrapped int64
-}
-
-func isNewer(value, previous uint16) bool {
-	if value-previous == breakpoint {
-		return value > previous
-	}
-	return value != previous && (value-previous) < breakpoint
-}
-
-func (u *unwrapper) unwrap(i uint16) int64 {
-	if !u.init {
-		u.init = true
-		u.lastUnwrapped = int64(i)
-		return u.lastUnwrapped
-	}
-
-	lastWrapped := uint16(u.lastUnwrapped)
-	delta := int64(i - lastWrapped)
-	if isNewer(i, lastWrapped) {
-		if delta < 0 {
-			delta += maxSequenceNumberPlusOne
-		}
-	} else if delta > 0 && u.lastUnwrapped+delta-maxSequenceNumberPlusOne >= 0 {
-		delta -= maxSequenceNumberPlusOne
-	}
-
-	u.lastUnwrapped += delta
-	return u.lastUnwrapped
-}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/twcc/arrival_time_map.go

@@ -12,6 +12,8 @@ const (
 // of the arrival times of packets. It is used by the TWCC interceptor to build feedback
 // packets.
 // See https://source.chromium.org/chromium/chromium/src/+/refs/heads/main:third_party/webrtc/modules/remote_bitrate_estimator/packet_arrival_map.h;drc=b5cd13bb6d5d157a5fbe3628b2dd1c1e106203c6
+//
+//nolint:lll
 type packetArrivalTimeMap struct {
 	// arrivalTimes is a circular buffer, where the packet with sequence number sn is stored
 	// in slot sn % len(arrivalTimes)
@@ -31,12 +33,14 @@ func (m *packetArrivalTimeMap) AddPacket(sequenceNumber int64, arrivalTime int64
 		m.beginSequenceNumber = sequenceNumber
 		m.endSequenceNumber = sequenceNumber + 1
 		m.arrivalTimes[m.index(sequenceNumber)] = arrivalTime
+
 		return
 	}
 
 	if sequenceNumber >= m.beginSequenceNumber && sequenceNumber < m.endSequenceNumber {
 		// The packet is within the buffer, no need to resize.
 		m.arrivalTimes[m.index(sequenceNumber)] = arrivalTime
+
 		return
 	}
 
@@ -53,6 +57,7 @@ func (m *packetArrivalTimeMap) AddPacket(sequenceNumber int64, arrivalTime int64
 		m.arrivalTimes[m.index(sequenceNumber)] = arrivalTime
 		m.setNotReceived(sequenceNumber+1, m.beginSequenceNumber)
 		m.beginSequenceNumber = sequenceNumber
+
 		return
 	}
 
@@ -64,6 +69,7 @@ func (m *packetArrivalTimeMap) AddPacket(sequenceNumber int64, arrivalTime int64
 		m.beginSequenceNumber = sequenceNumber
 		m.endSequenceNumber = newEndSequenceNumber
 		m.arrivalTimes[m.index(sequenceNumber)] = arrivalTime
+
 		return
 	}
 
@@ -99,12 +105,15 @@ func (m *packetArrivalTimeMap) EndSequenceNumber() int64 {
 
 // FindNextAtOrAfter returns the sequence number and timestamp of the first received packet that has a sequence number
 // greator or equal to sequenceNumber.
-func (m *packetArrivalTimeMap) FindNextAtOrAfter(sequenceNumber int64) (foundSequenceNumber int64, arrivalTime int64, ok bool) {
+func (m *packetArrivalTimeMap) FindNextAtOrAfter(sequenceNumber int64) (
+	foundSequenceNumber int64, arrivalTime int64, ok bool,
+) {
 	for sequenceNumber = m.Clamp(sequenceNumber); sequenceNumber < m.endSequenceNumber; sequenceNumber++ {
 		if t := m.get(sequenceNumber); t >= 0 {
 			return sequenceNumber, t, true
 		}
 	}
+
 	return -1, -1, false
 }
 
@@ -116,6 +125,7 @@ func (m *packetArrivalTimeMap) EraseTo(sequenceNumber int64) {
 	if sequenceNumber >= m.endSequenceNumber {
 		// Erase all.
 		m.beginSequenceNumber = m.endSequenceNumber
+
 		return
 	}
 	// Remove some
@@ -138,7 +148,7 @@ func (m *packetArrivalTimeMap) HasReceived(sequenceNumber int64) bool {
 	return m.get(sequenceNumber) >= 0
 }
 
-// Clamp returns sequenceNumber clamped to [beginSequenceNumber, endSequenceNumber]
+// Clamp returns sequenceNumber clamped to [beginSequenceNumber, endSequenceNumber].
 func (m *packetArrivalTimeMap) Clamp(sequenceNumber int64) int64 {
 	if sequenceNumber < m.beginSequenceNumber {
 		return m.beginSequenceNumber
@@ -146,6 +156,7 @@ func (m *packetArrivalTimeMap) Clamp(sequenceNumber int64) int64 {
 	if m.endSequenceNumber < sequenceNumber {
 		return m.endSequenceNumber
 	}
+
 	return sequenceNumber
 }
 
@@ -153,6 +164,7 @@ func (m *packetArrivalTimeMap) get(sequenceNumber int64) int64 {
 	if sequenceNumber < m.beginSequenceNumber || sequenceNumber >= m.endSequenceNumber {
 		return -1
 	}
+
 	return m.arrivalTimes[m.index(sequenceNumber)]
 }
 

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/twcc/header_extension_interceptor.go

@@ -13,20 +13,20 @@ import (
 
 var errHeaderIsNil = errors.New("header is nil")
 
-// HeaderExtensionInterceptorFactory is a interceptor.Factory for a HeaderExtensionInterceptor
+// HeaderExtensionInterceptorFactory is a interceptor.Factory for a HeaderExtensionInterceptor.
 type HeaderExtensionInterceptorFactory struct{}
 
-// NewInterceptor constructs a new HeaderExtensionInterceptor
+// NewInterceptor constructs a new HeaderExtensionInterceptor.
 func (h *HeaderExtensionInterceptorFactory) NewInterceptor(_ string) (interceptor.Interceptor, error) {
 	return &HeaderExtensionInterceptor{}, nil
 }
 
-// NewHeaderExtensionInterceptor returns a HeaderExtensionInterceptorFactory
+// NewHeaderExtensionInterceptor returns a HeaderExtensionInterceptorFactory.
 func NewHeaderExtensionInterceptor() (*HeaderExtensionInterceptorFactory, error) {
 	return &HeaderExtensionInterceptorFactory{}, nil
 }
 
-// HeaderExtensionInterceptor adds transport wide sequence numbers as header extension to each RTP packet
+// HeaderExtensionInterceptor adds transport wide sequence numbers as header extension to each RTP packet.
 type HeaderExtensionInterceptor struct {
 	interceptor.NoOp
 	nextSequenceNr uint32
@@ -36,31 +36,39 @@ const transportCCURI = "http://www.ietf.org/id/draft-holmer-rmcat-transport-wide
 
 // BindLocalStream returns a writer that adds a rtp.TransportCCExtension
 // header with increasing sequence numbers to each outgoing packet.
-func (h *HeaderExtensionInterceptor) BindLocalStream(info *interceptor.StreamInfo, writer interceptor.RTPWriter) interceptor.RTPWriter {
+func (h *HeaderExtensionInterceptor) BindLocalStream(
+	info *interceptor.StreamInfo,
+	writer interceptor.RTPWriter,
+) interceptor.RTPWriter {
 	var hdrExtID uint8
 	for _, e := range info.RTPHeaderExtensions {
 		if e.URI == transportCCURI {
-			hdrExtID = uint8(e.ID)
+			hdrExtID = uint8(e.ID) //nolint:gosec // G115
+
 			break
 		}
 	}
 	if hdrExtID == 0 { // Don't add header extension if ID is 0, because 0 is an invalid extension ID
 		return writer
 	}
-	return interceptor.RTPWriterFunc(func(header *rtp.Header, payload []byte, attributes interceptor.Attributes) (int, error) {
-		sequenceNumber := atomic.AddUint32(&h.nextSequenceNr, 1) - 1
 
-		tcc, err := (&rtp.TransportCCExtension{TransportSequence: uint16(sequenceNumber)}).Marshal()
-		if err != nil {
-			return 0, err
-		}
-		if header == nil {
-			return 0, errHeaderIsNil
-		}
-		err = header.SetExtension(hdrExtID, tcc)
-		if err != nil {
-			return 0, err
-		}
-		return writer.Write(header, payload, attributes)
-	})
+	return interceptor.RTPWriterFunc(
+		func(header *rtp.Header, payload []byte, attributes interceptor.Attributes) (int, error) {
+			sequenceNumber := atomic.AddUint32(&h.nextSequenceNr, 1) - 1
+			//nolint:gosec // G115
+			tcc, err := (&rtp.TransportCCExtension{TransportSequence: uint16(sequenceNumber)}).Marshal()
+			if err != nil {
+				return 0, err
+			}
+			if header == nil {
+				return 0, errHeaderIsNil
+			}
+			err = header.SetExtension(hdrExtID, tcc)
+			if err != nil {
+				return 0, err
+			}
+
+			return writer.Write(header, payload, attributes)
+		},
+	)
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/twcc/sender_interceptor.go

@@ -14,16 +14,16 @@ import (
 	"github.com/pion/rtp"
 )
 
-// SenderInterceptorFactory is a interceptor.Factory for a SenderInterceptor
+// SenderInterceptorFactory is a interceptor.Factory for a SenderInterceptor.
 type SenderInterceptorFactory struct {
 	opts []Option
 }
 
 var errClosed = errors.New("interceptor is closed")
 
-// NewInterceptor constructs a new SenderInterceptor
+// NewInterceptor constructs a new SenderInterceptor.
 func (s *SenderInterceptorFactory) NewInterceptor(_ string) (interceptor.Interceptor, error) {
-	i := &SenderInterceptor{
+	senderInterceptor := &SenderInterceptor{
 		log:        logging.NewDefaultLoggerFactory().NewLogger("twcc_sender_interceptor"),
 		packetChan: make(chan packet),
 		close:      make(chan struct{}),
@@ -32,13 +32,13 @@ func (s *SenderInterceptorFactory) NewInterceptor(_ string) (interceptor.Interce
 	}
 
 	for _, opt := range s.opts {
-		err := opt(i)
+		err := opt(senderInterceptor)
 		if err != nil {
 			return nil, err
 		}
 	}
 
-	return i, nil
+	return senderInterceptor, nil
 }
 
 // NewSenderInterceptor returns a new SenderInterceptorFactory configured with the given options.
@@ -64,7 +64,7 @@ type SenderInterceptor struct {
 	packetChan chan packet
 }
 
-// An Option is a function that can be used to configure a SenderInterceptor
+// An Option is a function that can be used to configure a SenderInterceptor.
 type Option func(*SenderInterceptor) error
 
 // SendInterval sets the interval at which the interceptor
@@ -72,6 +72,7 @@ type Option func(*SenderInterceptor) error
 func SendInterval(interval time.Duration) Option {
 	return func(s *SenderInterceptor) error {
 		s.interval = interval
+
 		return nil
 	}
 }
@@ -102,54 +103,63 @@ type packet struct {
 	ssrc           uint32
 }
 
-// BindRemoteStream lets you modify any incoming RTP packets. It is called once for per RemoteStream. The returned method
+// BindRemoteStream lets you modify any incoming RTP packets.
+// It is called once for per RemoteStream. The returned method
 // will be called once per rtp packet.
-func (s *SenderInterceptor) BindRemoteStream(info *interceptor.StreamInfo, reader interceptor.RTPReader) interceptor.RTPReader {
+//
+//nolint:cyclop
+func (s *SenderInterceptor) BindRemoteStream(
+	info *interceptor.StreamInfo, reader interceptor.RTPReader,
+) interceptor.RTPReader {
 	var hdrExtID uint8
 	for _, e := range info.RTPHeaderExtensions {
 		if e.URI == transportCCURI {
-			hdrExtID = uint8(e.ID)
+			hdrExtID = uint8(e.ID) //nolint:gosec // G115
+
 			break
 		}
 	}
 	if hdrExtID == 0 { // Don't try to read header extension if ID is 0, because 0 is an invalid extension ID
 		return reader
 	}
-	return interceptor.RTPReaderFunc(func(buf []byte, attributes interceptor.Attributes) (int, interceptor.Attributes, error) {
-		i, attr, err := reader.Read(buf, attributes)
-		if err != nil {
-			return 0, nil, err
-		}
 
-		if attr == nil {
-			attr = make(interceptor.Attributes)
-		}
-		header, err := attr.GetRTPHeader(buf[:i])
-		if err != nil {
-			return 0, nil, err
-		}
-		var tccExt rtp.TransportCCExtension
-		if ext := header.GetExtension(hdrExtID); ext != nil {
-			err = tccExt.Unmarshal(ext)
+	return interceptor.RTPReaderFunc(
+		func(buf []byte, attributes interceptor.Attributes) (int, interceptor.Attributes, error) {
+			i, attr, err := reader.Read(buf, attributes)
 			if err != nil {
 				return 0, nil, err
 			}
 
-			p := packet{
-				hdr:            header,
-				sequenceNumber: tccExt.TransportSequence,
-				arrivalTime:    time.Since(s.startTime).Microseconds(),
-				ssrc:           info.SSRC,
+			if attr == nil {
+				attr = make(interceptor.Attributes)
 			}
-			select {
-			case <-s.close:
-				return 0, nil, errClosed
-			case s.packetChan <- p:
+			header, err := attr.GetRTPHeader(buf[:i])
+			if err != nil {
+				return 0, nil, err
 			}
-		}
+			var tccExt rtp.TransportCCExtension
+			if ext := header.GetExtension(hdrExtID); ext != nil {
+				err = tccExt.Unmarshal(ext)
+				if err != nil {
+					return 0, nil, err
+				}
 
-		return i, attr, nil
-	})
+				p := packet{
+					hdr:            header,
+					sequenceNumber: tccExt.TransportSequence,
+					arrivalTime:    time.Since(s.startTime).Microseconds(),
+					ssrc:           info.SSRC,
+				}
+				select {
+				case <-s.close:
+					return 0, nil, errClosed
+				case s.packetChan <- p:
+				}
+			}
+
+			return i, attr, nil
+		},
+	)
 }
 
 // Close closes the interceptor.
@@ -174,7 +184,7 @@ func (s *SenderInterceptor) isClosed() bool {
 	}
 }
 
-func (s *SenderInterceptor) loop(w interceptor.RTCPWriter) {
+func (s *SenderInterceptor) loop(writer interceptor.RTCPWriter) {
 	defer s.wg.Done()
 
 	select {
@@ -189,6 +199,7 @@ func (s *SenderInterceptor) loop(w interceptor.RTCPWriter) {
 		select {
 		case <-s.close:
 			ticker.Stop()
+
 			return
 		case p := <-s.packetChan:
 			s.recorder.Record(p.ssrc, p.sequenceNumber, p.arrivalTime)
@@ -199,7 +210,7 @@ func (s *SenderInterceptor) loop(w interceptor.RTCPWriter) {
 			if len(pkts) == 0 {
 				continue
 			}
-			if _, err := w.Write(pkts, nil); err != nil {
+			if _, err := writer.Write(pkts, nil); err != nil {
 				s.log.Error(err.Error())
 			}
 		}

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/pkg/twcc/twcc.go

@@ -71,12 +71,13 @@ func (r *Recorder) Record(mediaSSRC uint32, sequenceNumber uint16, arrivalTime i
 }
 
 func (r *Recorder) maybeCullOldPackets(sequenceNumber int64, arrivalTime int64) {
-	if r.startSequenceNumber != nil && *r.startSequenceNumber >= r.arrivalTimeMap.EndSequenceNumber() && arrivalTime >= packetWindowMicroseconds {
+	if r.startSequenceNumber != nil && *r.startSequenceNumber >= r.arrivalTimeMap.EndSequenceNumber() &&
+		arrivalTime >= packetWindowMicroseconds {
 		r.arrivalTimeMap.RemoveOldPackets(sequenceNumber, arrivalTime-packetWindowMicroseconds)
 	}
 }
 
-// PacketsHeld returns the number of received packets currently held by the recorder
+// PacketsHeld returns the number of received packets currently held by the recorder.
 func (r *Recorder) PacketsHeld() int {
 	return r.packetsHeld
 }
@@ -101,6 +102,7 @@ func (r *Recorder) BuildFeedbackPacket() []rtcp.Packet {
 		// old.
 	}
 	r.packetsHeld = 0
+
 	return feedbacks
 }
 
@@ -109,6 +111,7 @@ func (r *Recorder) BuildFeedbackPacket() []rtcp.Packet {
 func (r *Recorder) maybeBuildFeedbackPacket(beginSeqNumInclusive, endSeqNumExclusive int64) *feedback {
 	// NOTE: The logic of this method is inspired by the implementation in Chrome.
 	// See https://source.chromium.org/chromium/chromium/src/+/refs/heads/main:third_party/webrtc/modules/remote_bitrate_estimator/remote_estimator_proxy.cc;l=276;drc=b5cd13bb6d5d157a5fbe3628b2dd1c1e106203c6
+	//nolint:lll
 	startSNInclusive, endSNExclusive := r.arrivalTimeMap.Clamp(beginSeqNumInclusive), r.arrivalTimeMap.Clamp(endSeqNumExclusive)
 
 	// Create feedback on demand, as we don't yet know if there are packets in the range that have been
@@ -136,18 +139,19 @@ func (r *Recorder) maybeBuildFeedbackPacket(beginSeqNumInclusive, endSeqNumExclu
 			// baseSequenceNumber is the expected first sequence number. This is known,
 			// but we may not have actually received it, so the base time should be the time
 			// of the first received packet in the feedback.
-			fb.setBase(uint16(baseSequenceNumber), arrivalTime)
+			fb.setBase(uint16(baseSequenceNumber), arrivalTime) //nolint:gosec // G115
 
-			if !fb.addReceived(uint16(seq), arrivalTime) {
+			if !fb.addReceived(uint16(seq), arrivalTime) { //nolint:gosec // G115
 				// Could not add a single received packet to the feedback.
 				// This is unexpected to actually occur, but if it does, we'll
 				// try again after skipping any missing packets.
 				// NOTE: It's fine that we already incremented fbPktCnt, as in essence
 				// we did actually "skip" a feedback (and this matches Chrome's behavior).
 				r.startSequenceNumber = &seq
+
 				return nil
 			}
-		} else if !fb.addReceived(uint16(seq), arrivalTime) {
+		} else if !fb.addReceived(uint16(seq), arrivalTime) { //nolint:gosec // G115
 			// Could not add timestamp. Packet may be full. Return
 			// and try again with a fresh packet.
 			break
@@ -157,6 +161,7 @@ func (r *Recorder) maybeBuildFeedbackPacket(beginSeqNumInclusive, endSeqNumExclu
 	}
 
 	r.startSequenceNumber = &nextSequenceNumber
+
 	return fb
 }
 
@@ -192,7 +197,7 @@ func (f *feedback) setBase(sequenceNumber uint16, timeUS int64) {
 
 func (f *feedback) getRTCP() *rtcp.TransportLayerCC {
 	f.rtcp.PacketStatusCount = f.sequenceNumberCount
-	f.rtcp.ReferenceTime = uint32(f.refTimestamp64MS)
+	f.rtcp.ReferenceTime = uint32(f.refTimestamp64MS) //nolint:gosec // G115
 	f.rtcp.BaseSequenceNumber = f.baseSequenceNumber
 	for len(f.lastChunk.deltas) > 0 {
 		f.chunks = append(f.chunks, f.lastChunk.encode())
@@ -200,7 +205,8 @@ func (f *feedback) getRTCP() *rtcp.TransportLayerCC {
 	f.rtcp.PacketChunks = append(f.rtcp.PacketChunks, f.chunks...)
 	f.rtcp.RecvDeltas = f.deltas
 
-	padLen := 20 + len(f.rtcp.PacketChunks)*2 + f.len // 4 bytes header + 16 bytes twcc header + 2 bytes for each chunk + length of deltas
+	// 4 bytes header + 16 bytes twcc header + 2 bytes for each chunk + length of deltas
+	padLen := 20 + len(f.rtcp.PacketChunks)*2 + f.len
 	padding := padLen%4 != 0
 	for padLen%4 != 0 {
 		padLen++
@@ -209,7 +215,7 @@ func (f *feedback) getRTCP() *rtcp.TransportLayerCC {
 		Count:   rtcp.FormatTCC,
 		Type:    rtcp.TypeTransportSpecificFeedback,
 		Padding: padding,
-		Length:  uint16((padLen / 4) - 1),
+		Length:  uint16((padLen / 4) - 1), //nolint:gosec // G115
 	}
 
 	return f.rtcp
@@ -223,7 +229,8 @@ func (f *feedback) addReceived(sequenceNumber uint16, timestampUS int64) bool {
 	} else {
 		delta250US = (deltaUS - rtcp.TypeTCCDeltaScaleFactor/2) / rtcp.TypeTCCDeltaScaleFactor
 	}
-	if delta250US < math.MinInt16 || delta250US > math.MaxInt16 { // delta doesn't fit into 16 bit, need to create new packet
+	// delta doesn't fit into 16 bit, need to create new packet
+	if delta250US < math.MinInt16 || delta250US > math.MaxInt16 {
 		return false
 	}
 	deltaUSRounded := delta250US * rtcp.TypeTCCDeltaScaleFactor
@@ -257,6 +264,7 @@ func (f *feedback) addReceived(sequenceNumber uint16, timestampUS int64) bool {
 	f.lastTimestampUS += deltaUSRounded
 	f.sequenceNumberCount++
 	f.nextSequenceNumber++
+
 	return true
 }
 
@@ -282,6 +290,7 @@ func (c *chunk) canAdd(delta uint16) bool {
 	if len(c.deltas) < maxRunLengthCap && !c.hasDifferentTypes && delta == c.deltas[0] {
 		return true
 	}
+
 	return false
 }
 
@@ -294,13 +303,15 @@ func (c *chunk) add(delta uint16) {
 func (c *chunk) encode() rtcp.PacketStatusChunk {
 	if !c.hasDifferentTypes {
 		defer c.reset()
+
 		return &rtcp.RunLengthChunk{
 			PacketStatusSymbol: c.deltas[0],
-			RunLength:          uint16(len(c.deltas)),
+			RunLength:          uint16(len(c.deltas)), //nolint:gosec // G115
 		}
 	}
 	if len(c.deltas) == maxOneBitCap {
 		defer c.reset()
+
 		return &rtcp.StatusVectorChunk{
 			SymbolSize: rtcp.TypeTCCSymbolSizeOneBit,
 			SymbolList: c.deltas,
@@ -341,6 +352,7 @@ func maxInt(a, b int) int {
 	if a > b {
 		return a
 	}
+
 	return b
 }
 
@@ -348,6 +360,7 @@ func minInt(a, b int) int {
 	if a < b {
 		return a
 	}
+
 	return b
 }
 
@@ -355,6 +368,7 @@ func max64(a, b int64) int64 {
 	if a > b {
 		return a
 	}
+
 	return b
 }
 
@@ -362,5 +376,6 @@ func min64(a, b int64) int64 {
 	if a < b {
 		return a
 	}
+
 	return b
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/registry.go

@@ -13,7 +13,7 @@ func (r *Registry) Add(f Factory) {
 	r.factories = append(r.factories, f)
 }
 
-// Build constructs a single Interceptor from a InterceptorRegistry
+// Build constructs a single Interceptor from a InterceptorRegistry.
 func (r *Registry) Build(id string) (Interceptor, error) {
 	if len(r.factories) == 0 {
 		return &NoOp{}, nil

trunk/3rdparty/srs-bench/vendor/github.com/pion/interceptor/streaminfo.go

@@ -9,7 +9,7 @@ type RTPHeaderExtension struct {
 	ID  int
 }
 
-// StreamInfo is the Context passed when a StreamLocal or StreamRemote has been Binded or Unbinded
+// StreamInfo is the Context passed when a StreamLocal or StreamRemote has been Binded or Unbinded.
 type StreamInfo struct {
 	ID                                string
 	Attributes                        Attributes

trunk/3rdparty/srs-bench/vendor/github.com/pion/logging/.golangci.yml

@@ -19,12 +19,16 @@ linters-settings:
             recommendations:
               - errors
   forbidigo:
+    analyze-types: true
     forbid:
       - ^fmt.Print(f|ln)?$
       - ^log.(Panic|Fatal|Print)(f|ln)?$
       - ^os.Exit$
       - ^panic$
       - ^print(ln)?$
+      - p: ^testing.T.(Error|Errorf|Fatal|Fatalf|Fail|FailNow)$
+        pkg: ^testing$
+        msg: "use testify/assert instead"
   varnamelen:
     max-distance: 12
     min-name-length: 2
@@ -37,6 +41,12 @@ linters-settings:
       - w io.Writer
       - r io.Reader
       - b []byte
+  revive:
+    rules:
+      # Prefer 'any' type alias over 'interface{}' for Go 1.18+ compatibility
+      - name: use-any
+        severity: warning
+        disabled: false
 
 linters:
   enable:
@@ -59,7 +69,6 @@ linters:
     - exportloopref    # checks for pointers to enclosing loop variables
     - forbidigo        # Forbids identifiers
     - forcetypeassert  # finds forced type assertions
-    - funlen           # Tool for detection of long functions
     - gci              # Gci control golang package import order and make it always deterministic.
     - gochecknoglobals # Checks that no globals are present in Go code
     - gocognit         # Computes and checks the cognitive complexity of functions
@@ -106,6 +115,7 @@ linters:
     - whitespace       # Tool for detection of leading and trailing whitespace
   disable:
     - depguard         # Go linter that checks if package imports are in a list of acceptable packages
+    - funlen           # Tool for detection of long functions
     - gochecknoinits   # Checks that no init functions are present in Go code
     - gomodguard       # Allow and block list linter for direct Go module dependencies. This is different from depguard where there are different block types for example version constraints and module recommendations.
     - interfacebloat   # A linter that checks length of interface.
@@ -127,9 +137,12 @@ issues:
   exclude-dirs-use-default: false
   exclude-rules:
     # Allow complex tests and examples, better to be self contained
-    - path: (examples|main\.go|_test\.go)
+    - path: (examples|main\.go)
       linters:
+        - gocognit
         - forbidigo
+    - path: _test\.go
+      linters:
         - gocognit
 
     # Allow forbidden identifiers in CLI commands

trunk/3rdparty/srs-bench/vendor/github.com/pion/logging/README.md

@@ -6,7 +6,7 @@
 <h4 align="center">The Pion logging library</h4>
 <p align="center">
   <a href="https://pion.ly"><img src="https://img.shields.io/badge/pion-logging-gray.svg?longCache=true&colorB=brightgreen" alt="Pion transport"></a>
-  <a href="http://gophers.slack.com/messages/pion"><img src="https://img.shields.io/badge/join-us%20on%20slack-gray.svg?longCache=true&logo=slack&colorB=brightgreen" alt="Slack Widget"></a>
+  <a href="https://discord.gg/PngbdqpFbt"><img src="https://img.shields.io/badge/join-us%20on%20discord-gray.svg?longCache=true&logo=discord&colorB=brightblue" alt="join us on Discord"></a> <a href="https://bsky.app/profile/pion.ly"><img src="https://img.shields.io/badge/follow-us%20on%20bluesky-gray.svg?longCache=true&logo=bluesky&colorB=brightblue" alt="Follow us on Bluesky"></a> 
   <br>
   <img alt="GitHub Workflow Status" src="https://img.shields.io/github/actions/workflow/status/pion/logging/test.yaml">
   <a href="https://pkg.go.dev/github.com/pion/logging"><img src="https://pkg.go.dev/badge/github.com/pion/logging.svg" alt="Go Reference"></a>
@@ -20,9 +20,9 @@
 The library is used as a part of our WebRTC implementation. Please refer to that [roadmap](https://github.com/pion/webrtc/issues/9) to track our major milestones.
 
 ### Community
-Pion has an active community on the [Slack](https://pion.ly/slack).
+Pion has an active community on the [Discord](https://discord.gg/PngbdqpFbt).
 
-Follow the [Pion Twitter](https://twitter.com/_pion) for project updates and important WebRTC news.
+Follow the [Pion Bluesky](https://bsky.app/profile/pion.ly) or [Pion Twitter](https://twitter.com/_pion) for project updates and important WebRTC news.
 
 We are always looking to support **your projects**. Please reach out if you have something to build!
 If you need commercial support or don't want to use public methods you can contact us at [team@pion.ly](mailto:team@pion.ly)

trunk/3rdparty/srs-bench/vendor/github.com/pion/logging/logger.go

@@ -93,7 +93,7 @@ func (ll *DefaultLeveledLogger) WithOutput(output io.Writer) *DefaultLeveledLogg
 	return ll
 }
 
-func (ll *DefaultLeveledLogger) logf(logger *log.Logger, level LogLevel, format string, args ...interface{}) {
+func (ll *DefaultLeveledLogger) logf(logger *log.Logger, level LogLevel, format string, args ...any) {
 	if ll.level.Get() < level {
 		return
 	}
@@ -116,7 +116,7 @@ func (ll *DefaultLeveledLogger) Trace(msg string) {
 }
 
 // Tracef formats and emits a message if the logger is at or below LogLevelTrace.
-func (ll *DefaultLeveledLogger) Tracef(format string, args ...interface{}) {
+func (ll *DefaultLeveledLogger) Tracef(format string, args ...any) {
 	ll.logf(ll.trace, LogLevelTrace, format, args...)
 }
 
@@ -126,7 +126,7 @@ func (ll *DefaultLeveledLogger) Debug(msg string) {
 }
 
 // Debugf formats and emits a message if the logger is at or below LogLevelDebug.
-func (ll *DefaultLeveledLogger) Debugf(format string, args ...interface{}) {
+func (ll *DefaultLeveledLogger) Debugf(format string, args ...any) {
 	ll.logf(ll.debug, LogLevelDebug, format, args...)
 }
 
@@ -136,7 +136,7 @@ func (ll *DefaultLeveledLogger) Info(msg string) {
 }
 
 // Infof formats and emits a message if the logger is at or below LogLevelInfo.
-func (ll *DefaultLeveledLogger) Infof(format string, args ...interface{}) {
+func (ll *DefaultLeveledLogger) Infof(format string, args ...any) {
 	ll.logf(ll.info, LogLevelInfo, format, args...)
 }
 
@@ -146,7 +146,7 @@ func (ll *DefaultLeveledLogger) Warn(msg string) {
 }
 
 // Warnf formats and emits a message if the logger is at or below LogLevelWarn.
-func (ll *DefaultLeveledLogger) Warnf(format string, args ...interface{}) {
+func (ll *DefaultLeveledLogger) Warnf(format string, args ...any) {
 	ll.logf(ll.warn, LogLevelWarn, format, args...)
 }
 
@@ -156,7 +156,7 @@ func (ll *DefaultLeveledLogger) Error(msg string) {
 }
 
 // Errorf formats and emits a message if the logger is at or below LogLevelError.
-func (ll *DefaultLeveledLogger) Errorf(format string, args ...interface{}) {
+func (ll *DefaultLeveledLogger) Errorf(format string, args ...any) {
 	ll.logf(ll.err, LogLevelError, format, args...)
 }
 

trunk/3rdparty/srs-bench/vendor/github.com/pion/logging/scoped.go

@@ -58,15 +58,15 @@ const (
 // LeveledLogger is the basic pion Logger interface.
 type LeveledLogger interface {
 	Trace(msg string)
-	Tracef(format string, args ...interface{})
+	Tracef(format string, args ...any)
 	Debug(msg string)
-	Debugf(format string, args ...interface{})
+	Debugf(format string, args ...any)
 	Info(msg string)
-	Infof(format string, args ...interface{})
+	Infof(format string, args ...any)
 	Warn(msg string)
-	Warnf(format string, args ...interface{})
+	Warnf(format string, args ...any)
 	Error(msg string)
-	Errorf(format string, args ...interface{})
+	Errorf(format string, args ...any)
 }
 
 // LoggerFactory is the basic pion LoggerFactory interface.

trunk/3rdparty/srs-bench/vendor/github.com/pion/rtp/.golangci.yml

@@ -41,6 +41,12 @@ linters-settings:
       - w io.Writer
       - r io.Reader
       - b []byte
+  revive:
+    rules:
+      # Prefer 'any' type alias over 'interface{}' for Go 1.18+ compatibility
+      - name: use-any
+        severity: warning
+        disabled: false
 
 linters:
   enable:

trunk/3rdparty/srs-bench/vendor/github.com/pion/rtp/codecs/h265_packet.go

@@ -15,8 +15,9 @@ import (
 //
 
 var (
-	errH265CorruptedPacket   = errors.New("corrupted h265 packet")
-	errInvalidH265PacketType = errors.New("invalid h265 packet type")
+	errH265CorruptedPacket          = errors.New("corrupted h265 packet")
+	errInvalidH265PacketType        = errors.New("invalid h265 packet type")
+	errExpectFragmentationStartUnit = errors.New("expecting a fragmentation start unit")
 )
 
 //
@@ -192,6 +193,15 @@ func (p *H265SingleNALUnitPacket) Payload() []byte {
 
 func (p *H265SingleNALUnitPacket) isH265Packet() {}
 
+func (p *H265SingleNALUnitPacket) doPackaging(buf []byte) []byte {
+	buf = append(buf, annexbNALUStartCode...)
+	buf = append(buf, byte(p.payloadHeader>>8), byte(p.payloadHeader&0xFF))
+
+	buf = append(buf, p.payload...)
+
+	return buf
+}
+
 //
 // Aggregation Packets implementation
 //
@@ -399,6 +409,21 @@ func (p *H265AggregationPacket) OtherUnits() []H265AggregationUnit {
 
 func (p *H265AggregationPacket) isH265Packet() {}
 
+func (p *H265AggregationPacket) doPackaging(buf []byte) []byte {
+	if p.firstUnit == nil {
+		return buf
+	}
+	buf = append(buf, annexbNALUStartCode...)
+	buf = append(buf, p.firstUnit.nalUnit...)
+
+	for _, unit := range p.otherUnits {
+		buf = append(buf, annexbNALUStartCode...)
+		buf = append(buf, unit.nalUnit...)
+	}
+
+	return buf
+}
+
 //
 // Fragmentation Unit implementation
 //
@@ -536,6 +561,64 @@ func (p *H265FragmentationUnitPacket) Payload() []byte {
 
 func (p *H265FragmentationUnitPacket) isH265Packet() {}
 
+// H265FragmentationPacket represents a Fragmentation packet, which contains one or more Fragmentation Units.
+type H265FragmentationPacket struct {
+	payloadHeader H265NALUHeader
+	donl          *uint16
+	units         []*H265FragmentationUnitPacket
+	payload       []byte
+}
+
+func NewH265FragmentationPacket(startUnit *H265FragmentationUnitPacket) *H265FragmentationPacket {
+	return &H265FragmentationPacket{
+		payloadHeader: (startUnit.payloadHeader & 0x81FF) | (H265NALUHeader(startUnit.FuHeader().FuType()) << 9),
+		donl:          startUnit.donl,
+		units:         []*H265FragmentationUnitPacket{startUnit},
+	}
+}
+
+// PayloadHeader returns the NALU header of the packet.
+func (p *H265FragmentationPacket) PayloadHeader() H265NALUHeader {
+	return p.payloadHeader
+}
+
+// DONL returns the DONL of the packet.
+func (p *H265FragmentationPacket) DONL() *uint16 {
+	return p.donl
+}
+
+// Payload returns the Fragmentation packet payload.
+func (p *H265FragmentationPacket) Payload() []byte {
+	return p.payload
+}
+
+func (p *H265FragmentationPacket) isH265Packet() {}
+
+func (p *H265FragmentationPacket) doPackaging(buf []byte) []byte {
+	if len(p.payload) == 0 {
+		return buf
+	}
+
+	buf = append(buf, annexbNALUStartCode...)
+	buf = append(buf, byte(p.payloadHeader>>8), byte(p.payloadHeader&0xFF))
+	buf = append(buf, p.payload...)
+
+	return buf
+}
+
+func (p *H265FragmentationPacket) appendUnit(unit *H265FragmentationUnitPacket) {
+	if len(p.payload) > 0 {
+		// already have end unit
+		return
+	}
+	p.units = append(p.units, unit)
+	if unit.FuHeader().E() {
+		for _, u := range p.units {
+			p.payload = append(p.payload, u.payload...)
+		}
+	}
+}
+
 //
 // PACI implementation
 //
@@ -691,6 +774,21 @@ func (p *H265PACIPacket) Unmarshal(payload []byte) ([]byte, error) {
 
 func (p *H265PACIPacket) isH265Packet() {}
 
+func (p *H265PACIPacket) doPackaging(buf []byte) []byte {
+	buf = append(buf, annexbNALUStartCode...)
+	buf = append(buf, byte(p.payloadHeader>>8), byte(p.payloadHeader&0xFF))
+
+	buf = binary.BigEndian.AppendUint16(buf, p.paciHeaderFields)
+
+	if len(p.phes) > 0 {
+		buf = append(buf, p.phes...)
+	}
+
+	buf = append(buf, p.payload...)
+
+	return buf
+}
+
 //
 // Temporal Scalability Control Information
 //
@@ -745,10 +843,11 @@ func (h H265TSCI) RES() uint8 {
 
 type isH265Packet interface {
 	isH265Packet()
+	doPackaging([]byte) []byte
 }
 
 var (
-	_ isH265Packet = (*H265FragmentationUnitPacket)(nil)
+	_ isH265Packet = (*H265FragmentationPacket)(nil)
 	_ isH265Packet = (*H265PACIPacket)(nil)
 	_ isH265Packet = (*H265SingleNALUnitPacket)(nil)
 	_ isH265Packet = (*H265AggregationPacket)(nil)
@@ -802,7 +901,15 @@ func (p *H265Packet) Unmarshal(payload []byte) ([]byte, error) { // nolint:cyclo
 			return nil, err
 		}
 
-		p.packet = decoded
+		if decoded.FuHeader().S() {
+			p.packet = NewH265FragmentationPacket(decoded)
+		} else {
+			if fu, ok := p.packet.(*H265FragmentationPacket); !ok {
+				return nil, errExpectFragmentationStartUnit
+			} else {
+				fu.appendUnit(decoded)
+			}
+		}
 
 	case payloadHeader.IsAggregationPacket():
 		decoded := &H265AggregationPacket{}
@@ -825,7 +932,7 @@ func (p *H265Packet) Unmarshal(payload []byte) ([]byte, error) { // nolint:cyclo
 		p.packet = decoded
 	}
 
-	return nil, nil
+	return p.packet.doPackaging(nil), nil
 }
 
 // Packet returns the populated packet.

trunk/3rdparty/srs-bench/vendor/github.com/pion/rtp/header_extension.go

@@ -10,9 +10,7 @@ import (
 )
 
 const (
-	headerExtensionProfileOneByte = 0xBEDE
-	headerExtensionProfileTwoByte = 0x1000
-	headerExtensionIDReserved     = 0xF
+	headerExtensionIDReserved = 0xF
 )
 
 // HeaderExtension represents an RTP extension header.
@@ -140,7 +138,7 @@ func (e *OneByteHeaderExtension) Del(id uint8) error {
 // Unmarshal parses the extension payload.
 func (e *OneByteHeaderExtension) Unmarshal(buf []byte) (int, error) {
 	profile := binary.BigEndian.Uint16(buf[0:2])
-	if profile != headerExtensionProfileOneByte {
+	if profile != ExtensionProfileOneByte {
 		return 0, fmt.Errorf("%w actual(%x)", errHeaderExtensionNotFound, buf[0:2])
 	}
 	e.payload = buf
@@ -283,7 +281,7 @@ func (e *TwoByteHeaderExtension) Del(id uint8) error {
 // Unmarshal parses the extension payload.
 func (e *TwoByteHeaderExtension) Unmarshal(buf []byte) (int, error) {
 	profile := binary.BigEndian.Uint16(buf[0:2])
-	if profile != headerExtensionProfileTwoByte {
+	if profile != ExtensionProfileTwoByte {
 		return 0, fmt.Errorf("%w actual(%x)", errHeaderExtensionNotFound, buf[0:2])
 	}
 	e.payload = buf
@@ -354,7 +352,7 @@ func (e *RawExtension) Del(id uint8) error {
 // Unmarshal parses the extension from the given buffer.
 func (e *RawExtension) Unmarshal(buf []byte) (int, error) {
 	profile := binary.BigEndian.Uint16(buf[0:2])
-	if profile == headerExtensionProfileOneByte || profile == headerExtensionProfileTwoByte {
+	if profile == ExtensionProfileOneByte || profile == ExtensionProfileTwoByte {
 		return 0, fmt.Errorf("%w actual(%x)", errHeaderExtensionNotFound, buf[0:2])
 	}
 	e.payload = buf

trunk/3rdparty/srs-bench/vendor/github.com/pion/rtp/packet.go

@@ -29,6 +29,10 @@ type Header struct {
 	ExtensionProfile uint16
 	Extensions       []Extension
 
+	// PaddingLength is the length of the padding in bytes. It is not part of the RTP header
+	// (it is sent in the last byte of RTP packet padding), but logically it belongs here.
+	PaddingSize byte
+
 	// Deprecated: will be removed in a future version.
 	PayloadOffset int
 }
@@ -36,36 +40,50 @@ type Header struct {
 // Packet represents an RTP Packet.
 type Packet struct {
 	Header
-	Payload     []byte
-	PaddingSize byte
+	Payload []byte
+
+	PaddingSize byte // Deprecated: will be removed in a future version. Use Header.PaddingSize instead.
 
 	// Deprecated: will be removed in a future version.
 	Raw []byte
+
+	// Please do not add any new field directly to Packet struct unless you know that it is safe.
+	// pion internally passes Header and Payload separately, what causes bugs like
+	// https://github.com/pion/webrtc/issues/2403 .
 }
 
 const (
-	headerLength            = 4
-	versionShift            = 6
-	versionMask             = 0x3
-	paddingShift            = 5
-	paddingMask             = 0x1
-	extensionShift          = 4
-	extensionMask           = 0x1
-	extensionProfileOneByte = 0xBEDE
-	extensionProfileTwoByte = 0x1000
-	extensionIDReserved     = 0xF
-	ccMask                  = 0xF
-	markerShift             = 7
-	markerMask              = 0x1
-	ptMask                  = 0x7F
-	seqNumOffset            = 2
-	seqNumLength            = 2
-	timestampOffset         = 4
-	timestampLength         = 4
-	ssrcOffset              = 8
-	ssrcLength              = 4
-	csrcOffset              = 12
-	csrcLength              = 4
+	// ExtensionProfileOneByte is the RTP One Byte Header Extension Profile, defined in RFC 8285.
+	ExtensionProfileOneByte = 0xBEDE
+	// ExtensionProfileTwoByte is the RTP Two Byte Header Extension Profile, defined in RFC 8285.
+	ExtensionProfileTwoByte = 0x1000
+	// CryptexProfileOneByte is the Cryptex One Byte Header Extension Profile, defined in RFC 9335.
+	CryptexProfileOneByte = 0xC0DE
+	// CryptexProfileTwoByte is the Cryptex Two Byte Header Extension Profile, defined in RFC 9335.
+	CryptexProfileTwoByte = 0xC2DE
+)
+
+const (
+	headerLength        = 4
+	versionShift        = 6
+	versionMask         = 0x3
+	paddingShift        = 5
+	paddingMask         = 0x1
+	extensionShift      = 4
+	extensionMask       = 0x1
+	extensionIDReserved = 0xF
+	ccMask              = 0xF
+	markerShift         = 7
+	markerMask          = 0x1
+	ptMask              = 0x7F
+	seqNumOffset        = 2
+	seqNumLength        = 2
+	timestampOffset     = 4
+	timestampLength     = 4
+	ssrcOffset          = 8
+	ssrcLength          = 4
+	csrcOffset          = 12
+	csrcLength          = 4
 )
 
 // String helps with debugging by printing packet information in a readable way.
@@ -155,7 +173,7 @@ func (h *Header) Unmarshal(buf []byte) (n int, err error) { //nolint:gocognit,cy
 			return n, fmt.Errorf("size %d < %d: %w", len(buf), extensionEnd, errHeaderSizeInsufficientForExtension)
 		}
 
-		if h.ExtensionProfile == extensionProfileOneByte || h.ExtensionProfile == extensionProfileTwoByte {
+		if h.ExtensionProfile == ExtensionProfileOneByte || h.ExtensionProfile == ExtensionProfileTwoByte {
 			var (
 				extid      uint8
 				payloadLen int
@@ -168,7 +186,7 @@ func (h *Header) Unmarshal(buf []byte) (n int, err error) { //nolint:gocognit,cy
 					continue
 				}
 
-				if h.ExtensionProfile == extensionProfileOneByte {
+				if h.ExtensionProfile == ExtensionProfileOneByte {
 					extid = buf[n] >> 4
 					payloadLen = int(buf[n]&^0xF0 + 1)
 					n++
@@ -219,11 +237,12 @@ func (p *Packet) Unmarshal(buf []byte) error {
 		if end <= n {
 			return errTooSmall
 		}
-		p.PaddingSize = buf[end-1]
-		end -= int(p.PaddingSize)
+		p.Header.PaddingSize = buf[end-1]
+		end -= int(p.Header.PaddingSize)
 	} else {
-		p.PaddingSize = 0
+		p.Header.PaddingSize = 0
 	}
+	p.PaddingSize = p.Header.PaddingSize
 	if end < n {
 		return errTooSmall
 	}
@@ -302,14 +321,14 @@ func (h Header) MarshalTo(buf []byte) (n int, err error) { //nolint:cyclop
 
 		switch h.ExtensionProfile {
 		// RFC 8285 RTP One Byte Header Extension
-		case extensionProfileOneByte:
+		case ExtensionProfileOneByte:
 			for _, extension := range h.Extensions {
 				buf[n] = extension.id<<4 | (uint8(len(extension.payload)) - 1) // nolint: gosec // G115
 				n++
 				n += copy(buf[n:], extension.payload)
 			}
 		// RFC 8285 RTP Two Byte Header Extension
-		case extensionProfileTwoByte:
+		case ExtensionProfileTwoByte:
 			for _, extension := range h.Extensions {
 				buf[n] = extension.id
 				n++
@@ -353,12 +372,12 @@ func (h Header) MarshalSize() int {
 
 		switch h.ExtensionProfile {
 		// RFC 8285 RTP One Byte Header Extension
-		case extensionProfileOneByte:
+		case ExtensionProfileOneByte:
 			for _, extension := range h.Extensions {
 				extSize += 1 + len(extension.payload)
 			}
 		// RFC 8285 RTP Two Byte Header Extension
-		case extensionProfileTwoByte:
+		case ExtensionProfileTwoByte:
 			for _, extension := range h.Extensions {
 				extSize += 2 + len(extension.payload)
 			}
@@ -378,7 +397,7 @@ func (h *Header) SetExtension(id uint8, payload []byte) error { //nolint:gocogni
 	if h.Extension { // nolint: nestif
 		switch h.ExtensionProfile {
 		// RFC 8285 RTP One Byte Header Extension
-		case extensionProfileOneByte:
+		case ExtensionProfileOneByte:
 			if id < 1 || id > 14 {
 				return fmt.Errorf("%w actual(%d)", errRFC8285OneByteHeaderIDRange, id)
 			}
@@ -386,7 +405,7 @@ func (h *Header) SetExtension(id uint8, payload []byte) error { //nolint:gocogni
 				return fmt.Errorf("%w actual(%d)", errRFC8285OneByteHeaderSize, len(payload))
 			}
 		// RFC 8285 RTP Two Byte Header Extension
-		case extensionProfileTwoByte:
+		case ExtensionProfileTwoByte:
 			if id < 1 {
 				return fmt.Errorf("%w actual(%d)", errRFC8285TwoByteHeaderIDRange, id)
 			}
@@ -418,9 +437,9 @@ func (h *Header) SetExtension(id uint8, payload []byte) error { //nolint:gocogni
 
 	switch payloadLen := len(payload); {
 	case payloadLen <= 16:
-		h.ExtensionProfile = extensionProfileOneByte
+		h.ExtensionProfile = ExtensionProfileOneByte
 	case payloadLen > 16 && payloadLen < 256:
-		h.ExtensionProfile = extensionProfileTwoByte
+		h.ExtensionProfile = ExtensionProfileTwoByte
 	}
 
 	h.Extensions = append(h.Extensions, Extension{id: id, payload: payload})
@@ -490,7 +509,7 @@ func (p Packet) Marshal() (buf []byte, err error) {
 
 // MarshalTo serializes the packet and writes to the buffer.
 func (p *Packet) MarshalTo(buf []byte) (n int, err error) {
-	if p.Header.Padding && p.PaddingSize == 0 {
+	if p.Header.Padding && p.paddingSize() == 0 {
 		return 0, errInvalidRTPPadding
 	}
 
@@ -499,23 +518,28 @@ func (p *Packet) MarshalTo(buf []byte) (n int, err error) {
 		return 0, err
 	}
 
+	return marshalPayloadAndPaddingTo(buf, n, &p.Header, p.Payload, p.paddingSize())
+}
+
+func marshalPayloadAndPaddingTo(buf []byte, offset int, header *Header, payload []byte, paddingSize byte,
+) (n int, err error) {
 	// Make sure the buffer is large enough to hold the packet.
-	if n+len(p.Payload)+int(p.PaddingSize) > len(buf) {
+	if offset+len(payload)+int(paddingSize) > len(buf) {
 		return 0, io.ErrShortBuffer
 	}
 
-	m := copy(buf[n:], p.Payload)
+	m := copy(buf[offset:], payload)
 
-	if p.Header.Padding {
-		buf[n+m+int(p.PaddingSize-1)] = p.PaddingSize
+	if header.Padding {
+		buf[offset+m+int(paddingSize-1)] = paddingSize
 	}
 
-	return n + m + int(p.PaddingSize), nil
+	return offset + m + int(paddingSize), nil
 }
 
 // MarshalSize returns the size of the packet once marshaled.
 func (p Packet) MarshalSize() int {
-	return p.Header.MarshalSize() + len(p.Payload) + int(p.PaddingSize)
+	return p.Header.MarshalSize() + len(p.Payload) + int(p.paddingSize())
 }
 
 // Clone returns a deep copy of p.
@@ -552,3 +576,45 @@ func (h Header) Clone() Header {
 
 	return clone
 }
+
+func (p *Packet) paddingSize() byte {
+	if p.Header.PaddingSize > 0 {
+		return p.Header.PaddingSize
+	}
+
+	return p.PaddingSize
+}
+
+// MarshalPacketTo serializes the header and payload into bytes.
+// Parts of pion code passes RTP header and payload separately, so this function
+// is provided to help with that.
+//
+// Deprecated: this function is a temporary workaround and will be removed in pion/webrtc v5.
+func MarshalPacketTo(buf []byte, header *Header, payload []byte) (int, error) {
+	n, err := header.MarshalTo(buf)
+	if err != nil {
+		return 0, err
+	}
+
+	return marshalPayloadAndPaddingTo(buf, n, header, payload, header.PaddingSize)
+}
+
+// PacketMarshalSize returns the size of the header and payload once marshaled.
+// Parts of pion code passes RTP header and payload separately, so this function
+// is provided to help with that.
+//
+// Deprecated: this function is a temporary workaround and will be removed in pion/webrtc v5.
+func PacketMarshalSize(header *Header, payload []byte) int {
+	return header.MarshalSize() + len(payload) + int(header.PaddingSize)
+}
+
+// HeaderAndPacketMarshalSize returns the size of the header and full packet once marshaled.
+// Parts of pion code passes RTP header and payload separately, so this function
+// is provided to help with that.
+//
+// Deprecated: this function is a temporary workaround and will be removed in pion/webrtc v5.
+func HeaderAndPacketMarshalSize(header *Header, payload []byte) (headerSize int, packetSize int) {
+	headerSize = header.MarshalSize()
+
+	return headerSize, headerSize + len(payload) + int(header.PaddingSize)
+}

trunk/3rdparty/srs-bench/vendor/github.com/pion/rtp/packetizer.go

@@ -165,9 +165,6 @@ func (p *packetizer) GeneratePadding(samples uint32) []*Packet {
 	packets := make([]*Packet, samples)
 
 	for i := 0; i < int(samples); i++ {
-		pp := make([]byte, 255)
-		pp[254] = 255
-
 		packets[i] = &Packet{
 			Header: Header{
 				Version:        2,
@@ -179,8 +176,8 @@ func (p *packetizer) GeneratePadding(samples uint32) []*Packet {
 				Timestamp:      p.Timestamp, // Use latest timestamp
 				SSRC:           p.SSRC,
 				CSRC:           []uint32{},
+				PaddingSize:    255,
 			},
-			Payload: pp,
 		}
 	}
 

trunk/3rdparty/srs-bench/vendor/github.com/pion/sdp/v3/.golangci.yml

@@ -19,12 +19,16 @@ linters-settings:
             recommendations:
               - errors
   forbidigo:
+    analyze-types: true
     forbid:
       - ^fmt.Print(f|ln)?$
       - ^log.(Panic|Fatal|Print)(f|ln)?$
       - ^os.Exit$
       - ^panic$
       - ^print(ln)?$
+      - p: ^testing.T.(Error|Errorf|Fatal|Fatalf|Fail|FailNow)$
+        pkg: ^testing$
+        msg: "use testify/assert instead"
   varnamelen:
     max-distance: 12
     min-name-length: 2
@@ -127,9 +131,12 @@ issues:
   exclude-dirs-use-default: false
   exclude-rules:
     # Allow complex tests and examples, better to be self contained
-    - path: (examples|main\.go|_test\.go)
+    - path: (examples|main\.go)
       linters:
+        - gocognit
         - forbidigo
+    - path: _test\.go
+      linters:
         - gocognit
 
     # Allow forbidden identifiers in CLI commands

trunk/3rdparty/srs-bench/vendor/github.com/pion/sdp/v3/README.md

@@ -7,10 +7,10 @@
 <p align="center">
   <a href="https://pion.ly"><img src="https://img.shields.io/badge/pion-sdp-gray.svg?longCache=true&colorB=brightgreen" alt="Pion SDP"></a>
   <a href="https://sourcegraph.com/github.com/pion/sdp?badge"><img src="https://sourcegraph.com/github.com/pion/sdp/-/badge.svg" alt="Sourcegraph Widget"></a>
-  <a href="https://pion.ly/slack"><img src="https://img.shields.io/badge/join-us%20on%20slack-gray.svg?longCache=true&logo=slack&colorB=brightgreen" alt="Slack Widget"></a>
+  <a href="https://discord.gg/PngbdqpFbt"><img src="https://img.shields.io/badge/join-us%20on%20discord-gray.svg?longCache=true&logo=discord&colorB=brightblue" alt="join us on Discord"></a> <a href="https://bsky.app/profile/pion.ly"><img src="https://img.shields.io/badge/follow-us%20on%20bluesky-gray.svg?longCache=true&logo=bluesky&colorB=brightblue" alt="Follow us on Bluesky"></a>
   <br>
   <img alt="GitHub Workflow Status" src="https://img.shields.io/github/actions/workflow/status/pion/sdp/test.yaml">
-  <a href="https://pkg.go.dev/github.com/pion/sdp/v2"><img src="https://pkg.go.dev/badge/github.com/pion/sdp/v2.svg" alt="Go Reference"></a>
+  <a href="https://pkg.go.dev/github.com/pion/sdp/v3"><img src="https://pkg.go.dev/badge/github.com/pion/sdp/v3.svg" alt="Go Reference"></a>
   <a href="https://codecov.io/gh/pion/sdp"><img src="https://codecov.io/gh/pion/sdp/branch/master/graph/badge.svg" alt="Coverage Status"></a>
   <a href="https://goreportcard.com/report/github.com/pion/sdp"><img src="https://goreportcard.com/badge/github.com/pion/sdp" alt="Go Report Card"></a>
   <a href="LICENSE"><img src="https://img.shields.io/badge/License-MIT-yellow.svg" alt="License: MIT"></a>
@@ -21,9 +21,9 @@
 The library is used as a part of our WebRTC implementation. Please refer to that [roadmap](https://github.com/pion/webrtc/issues/9) to track our major milestones.
 
 ### Community
-Pion has an active community on the [Slack](https://pion.ly/slack).
+Pion has an active community on the [Discord](https://discord.gg/PngbdqpFbt).
 
-Follow the [Pion Twitter](https://twitter.com/_pion) for project updates and important WebRTC news.
+Follow the [Pion Bluesky](https://bsky.app/profile/pion.ly) or [Pion Twitter](https://twitter.com/_pion) for project updates and important WebRTC news.
 
 We are always looking to support **your projects**. Please reach out if you have something to build!
 If you need commercial support or don't want to use public methods you can contact us at [team@pion.ly](mailto:team@pion.ly)
@@ -32,4 +32,4 @@ If you need commercial support or don't want to use public methods you can conta
 Check out the [contributing wiki](https://github.com/pion/webrtc/wiki/Contributing) to join the group of amazing people making this project possible
 
 ### License
-MIT License - see [LICENSE](LICENSE) for full text
+MIT License - see [LICENSE](LICENSE) for full text

trunk/3rdparty/srs-bench/vendor/github.com/pion/sdp/v3/jsep.go

@@ -23,6 +23,7 @@ const (
 	AttrKeyConnectionSetup  = "setup"
 	AttrKeyMID              = "mid"
 	AttrKeyICELite          = "ice-lite"
+	AttrKeyICEOptions       = "ice-options"
 	AttrKeyRTCPMux          = "rtcp-mux"
 	AttrKeyRTCPRsize        = "rtcp-rsize"
 	AttrKeyInactive         = "inactive"
@@ -31,6 +32,7 @@ const (
 	AttrKeySendRecv         = "sendrecv"
 	AttrKeyExtMap           = "extmap"
 	AttrKeyExtMapAllowMixed = "extmap-allow-mixed"
+	AttrKeyCryptex          = "cryptex"
 )
 
 // Constants for semantic tokens used in JSEP.
@@ -38,7 +40,9 @@ const (
 	SemanticTokenLipSynchronization     = "LS"
 	SemanticTokenFlowIdentification     = "FID"
 	SemanticTokenForwardErrorCorrection = "FEC"
-	SemanticTokenWebRTCMediaStreams     = "WMS"
+	// https://datatracker.ietf.org/doc/html/rfc5956#section-4.1
+	SemanticTokenForwardErrorCorrectionFramework = "FEC-FR"
+	SemanticTokenWebRTCMediaStreams              = "WMS"
 )
 
 // Constants for extmap key.
@@ -113,6 +117,12 @@ func (s *SessionDescription) WithValueAttribute(key, value string) *SessionDescr
 	return s
 }
 
+// WithICETrickleAdvertised advertises ICE trickle support in the session description.
+// See https://datatracker.ietf.org/doc/html/rfc9429#section-5.2.1
+func (s *SessionDescription) WithICETrickleAdvertised() *SessionDescription {
+	return s.WithValueAttribute(AttrKeyICEOptions, "trickle")
+}
+
 // WithFingerprint adds a fingerprint to the session description.
 func (s *SessionDescription) WithFingerprint(algorithm, value string) *SessionDescription {
 	return s.WithValueAttribute("fingerprint", algorithm+" "+value)

trunk/3rdparty/srs-bench/vendor/github.com/pion/sdp/v3/unmarshal.go

@@ -986,10 +986,10 @@ func timeShorthand(b byte) int64 {
 func parsePort(value string) (int, error) {
 	port, err := strconv.Atoi(value)
 	if err != nil {
-		return 0, fmt.Errorf("%w `%v`", errSDPInvalidPortValue, port)
+		return 0, fmt.Errorf("%w `%v`", errSDPInvalidPortValue, value)
 	}
 
-	if port < 0 || port > 65536 {
+	if port < 0 || port > 65535 {
 		return 0, fmt.Errorf("%w -- out of range `%v`", errSDPInvalidPortValue, port)
 	}
 

trunk/3rdparty/srs-bench/vendor/github.com/pion/sdp/v3/util.go

@@ -19,16 +19,12 @@ const (
 )
 
 var (
-	errExtractCodecRtpmap         = errors.New("could not extract codec from rtpmap")
-	errExtractCodecFmtp           = errors.New("could not extract codec from fmtp")
-	errExtractCodecRtcpFb         = errors.New("could not extract codec from rtcp-fb")
-	errMultipleName               = errors.New("codec has multiple names defined")
-	errMultipleClockRate          = errors.New("codec has multiple clock rates")
-	errMultipleEncodingParameters = errors.New("codec has multiple encoding parameters")
-	errMultipleFmtp               = errors.New("codec has multiple fmtp values")
-	errPayloadTypeNotFound        = errors.New("payload type not found")
-	errCodecNotFound              = errors.New("codec not found")
-	errSyntaxError                = errors.New("SyntaxError")
+	errExtractCodecRtpmap  = errors.New("could not extract codec from rtpmap")
+	errExtractCodecFmtp    = errors.New("could not extract codec from fmtp")
+	errExtractCodecRtcpFb  = errors.New("could not extract codec from rtcp-fb")
+	errPayloadTypeNotFound = errors.New("payload type not found")
+	errCodecNotFound       = errors.New("codec not found")
+	errSyntaxError         = errors.New("SyntaxError")
 )
 
 // ConnectionRole indicates which of the end points should initiate the connection establishment.
@@ -207,49 +203,30 @@ func parseRtcpFb(rtcpFb string) (codec Codec, isWildcard bool, err error) {
 	return codec, isWildcard, nil
 }
 
-func mergeCodecs(codec Codec, codecs map[uint8]Codec) error { // nolint: cyclop
+func mergeCodecs(codec Codec, codecs map[uint8]Codec) {
 	savedCodec := codecs[codec.PayloadType]
-	savedCodec.PayloadType = codec.PayloadType
-
-	if codec.Name != "" {
-		if savedCodec.Name != "" && savedCodec.Name != codec.Name {
-			return errMultipleName
-		}
 
+	if savedCodec.PayloadType == 0 {
+		savedCodec.PayloadType = codec.PayloadType
+	}
+	if savedCodec.Name == "" {
 		savedCodec.Name = codec.Name
 	}
-
-	if codec.ClockRate != 0 {
-		if savedCodec.ClockRate != 0 && savedCodec.ClockRate != codec.ClockRate {
-			return errMultipleClockRate
-		}
-
+	if savedCodec.ClockRate == 0 {
 		savedCodec.ClockRate = codec.ClockRate
 	}
-
-	if codec.EncodingParameters != "" {
-		if savedCodec.EncodingParameters != "" && savedCodec.EncodingParameters != codec.EncodingParameters {
-			return errMultipleEncodingParameters
-		}
-
+	if savedCodec.EncodingParameters == "" {
 		savedCodec.EncodingParameters = codec.EncodingParameters
 	}
-
-	if codec.Fmtp != "" {
-		if savedCodec.Fmtp != "" && savedCodec.Fmtp != codec.Fmtp {
-			return errMultipleFmtp
-		}
-
+	if savedCodec.Fmtp == "" {
 		savedCodec.Fmtp = codec.Fmtp
 	}
-
 	savedCodec.RTCPFeedback = append(savedCodec.RTCPFeedback, codec.RTCPFeedback...)
-	codecs[savedCodec.PayloadType] = savedCodec
 
-	return nil
+	codecs[savedCodec.PayloadType] = savedCodec
 }
 
-func (s *SessionDescription) buildCodecMap() (map[uint8]Codec, error) { //nolint:cyclop, gocognit
+func (s *SessionDescription) buildCodecMap() map[uint8]Codec { //nolint:cyclop
 	codecs := map[uint8]Codec{
 		// static codecs that do not require a rtpmap
 		0: {
@@ -272,16 +249,12 @@ func (s *SessionDescription) buildCodecMap() (map[uint8]Codec, error) { //nolint
 			case strings.HasPrefix(attr, "rtpmap:"):
 				codec, err := parseRtpmap(attr)
 				if err == nil {
-					if err = mergeCodecs(codec, codecs); err != nil {
-						return nil, err
-					}
+					mergeCodecs(codec, codecs)
 				}
 			case strings.HasPrefix(attr, "fmtp:"):
 				codec, err := parseFmtp(attr)
 				if err == nil {
-					if err = mergeCodecs(codec, codecs); err != nil {
-						return nil, err
-					}
+					mergeCodecs(codec, codecs)
 				}
 			case strings.HasPrefix(attr, "rtcp-fb:"):
 				codec, isWildcard, err := parseRtcpFb(attr)
@@ -290,9 +263,7 @@ func (s *SessionDescription) buildCodecMap() (map[uint8]Codec, error) { //nolint
 				case isWildcard:
 					wildcardRTCPFeedback = append(wildcardRTCPFeedback, codec.RTCPFeedback...)
 				default:
-					if err = mergeCodecs(codec, codecs); err != nil {
-						return nil, err
-					}
+					mergeCodecs(codec, codecs)
 				}
 			}
 		}
@@ -306,7 +277,7 @@ func (s *SessionDescription) buildCodecMap() (map[uint8]Codec, error) { //nolint
 		codecs[i] = codec
 	}
 
-	return codecs, nil
+	return codecs
 }
 
 func equivalentFmtp(want, got string) bool {
@@ -350,10 +321,7 @@ func codecsMatch(wanted, got Codec) bool {
 
 // GetCodecForPayloadType scans the SessionDescription for the given payload type and returns the codec.
 func (s *SessionDescription) GetCodecForPayloadType(payloadType uint8) (Codec, error) {
-	codecs, err := s.buildCodecMap()
-	if err != nil {
-		return Codec{}, err
-	}
+	codecs := s.buildCodecMap()
 
 	codec, ok := codecs[payloadType]
 	if ok {
@@ -366,10 +334,7 @@ func (s *SessionDescription) GetCodecForPayloadType(payloadType uint8) (Codec, e
 // GetPayloadTypeForCodec scans the SessionDescription for a codec that matches the provided codec
 // as closely as possible and returns its payload type.
 func (s *SessionDescription) GetPayloadTypeForCodec(wanted Codec) (uint8, error) {
-	codecs, err := s.buildCodecMap()
-	if err != nil {
-		return 0, err
-	}
+	codecs := s.buildCodecMap()
 
 	for payloadType, codec := range codecs {
 		if codecsMatch(wanted, codec) {

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/.golangci.yml

@@ -19,23 +19,42 @@ linters-settings:
             recommendations:
               - errors
   forbidigo:
+    analyze-types: true
     forbid:
       - ^fmt.Print(f|ln)?$
       - ^log.(Panic|Fatal|Print)(f|ln)?$
       - ^os.Exit$
       - ^panic$
       - ^print(ln)?$
+      - p: ^testing.T.(Error|Errorf|Fatal|Fatalf|Fail|FailNow)$
+        pkg: ^testing$
+        msg: "use testify/assert instead"
+  varnamelen:
+    max-distance: 12
+    min-name-length: 2
+    ignore-type-assert-ok: true
+    ignore-map-index-ok: true
+    ignore-chan-recv-ok: true
+    ignore-decls:
+      - i int
+      - n int
+      - w io.Writer
+      - r io.Reader
+      - b []byte
 
 linters:
   enable:
     - asciicheck       # Simple linter to check that your code does not contain non-ASCII identifiers
     - bidichk          # Checks for dangerous unicode character sequences
     - bodyclose        # checks whether HTTP response body is closed successfully
+    - containedctx     # containedctx is a linter that detects struct contained context.Context field
     - contextcheck     # check the function whether use a non-inherited context
+    - cyclop           # checks function and package cyclomatic complexity
     - decorder         # check declaration order and count of types, constants, variables and functions
     - dogsled          # Checks assignments with too many blank identifiers (e.g. x, _, _, _, := f())
     - dupl             # Tool for code clone detection
     - durationcheck    # check for two durations multiplied together
+    - err113           # Golang linter to check the errors handling expressions
     - errcheck         # Errcheck is a program for checking for unchecked errors in go programs. These unchecked errors can be critical bugs in some cases
     - errchkjson       # Checks types passed to the json encoding functions. Reports unsupported types and optionally reports occations, where the check for the returned error can be omitted.
     - errname          # Checks that sentinel errors are prefixed with the `Err` and error types are suffixed with the `Error`.
@@ -46,18 +65,17 @@ linters:
     - forcetypeassert  # finds forced type assertions
     - gci              # Gci control golang package import order and make it always deterministic.
     - gochecknoglobals # Checks that no globals are present in Go code
-    - gochecknoinits   # Checks that no init functions are present in Go code
     - gocognit         # Computes and checks the cognitive complexity of functions
     - goconst          # Finds repeated strings that could be replaced by a constant
     - gocritic         # The most opinionated Go source code linter
+    - gocyclo          # Computes and checks the cyclomatic complexity of functions
+    - godot            # Check if comments end in a period
     - godox            # Tool for detection of FIXME, TODO and other comment keywords
-    - err113           # Golang linter to check the errors handling expressions
     - gofmt            # Gofmt checks whether code was gofmt-ed. By default this tool runs with -s option to check for code simplification
     - gofumpt          # Gofumpt checks whether code was gofumpt-ed.
     - goheader         # Checks is file header matches to pattern
     - goimports        # Goimports does everything that gofmt does. Additionally it checks unused imports
     - gomoddirectives  # Manage the use of 'replace', 'retract', and 'excludes' directives in go.mod.
-    - gomodguard       # Allow and block list linter for direct Go module dependencies. This is different from depguard where there are different block types for example version constraints and module recommendations.
     - goprintffuncname # Checks that printf-like functions are named with `f` at the end
     - gosec            # Inspects source code for security problems
     - gosimple         # Linter for Go source code that specializes in simplifying a code
@@ -65,9 +83,15 @@ linters:
     - grouper          # An analyzer to analyze expression groups.
     - importas         # Enforces consistent import aliases
     - ineffassign      # Detects when assignments to existing variables are not used
+    - lll              # Reports long lines
+    - maintidx         # maintidx measures the maintainability index of each function.
+    - makezero         # Finds slice declarations with non-zero initial length
     - misspell         # Finds commonly misspelled English words in comments
+    - nakedret         # Finds naked returns in functions greater than a specified function length
+    - nestif           # Reports deeply nested if statements
     - nilerr           # Finds the code that returns nil even if it checks that the error is not nil.
     - nilnil           # Checks that there is no simultaneous return of `nil` error and an invalid value.
+    - nlreturn         # nlreturn checks for a new line before return and branch statements to increase code clarity
     - noctx            # noctx finds sending http request without context.Context
     - predeclared      # find code that shadows one of Go's predeclared identifiers
     - revive           # golint replacement, finds style mistakes
@@ -75,28 +99,22 @@ linters:
     - stylecheck       # Stylecheck is a replacement for golint
     - tagliatelle      # Checks the struct tags.
     - tenv             # tenv is analyzer that detects using os.Setenv instead of t.Setenv since Go1.17
-    - tparallel        # tparallel detects inappropriate usage of t.Parallel() method in your Go test codes
+    - thelper          # thelper detects golang test helpers without t.Helper() call and checks the consistency of test helpers
     - typecheck        # Like the front-end of a Go compiler, parses and type-checks Go code
     - unconvert        # Remove unnecessary type conversions
     - unparam          # Reports unused function parameters
     - unused           # Checks Go code for unused constants, variables, functions and types
+    - varnamelen       # checks that the length of a variable's name matches its scope
     - wastedassign     # wastedassign finds wasted assignment statements
     - whitespace       # Tool for detection of leading and trailing whitespace
   disable:
     - depguard         # Go linter that checks if package imports are in a list of acceptable packages
-    - containedctx     # containedctx is a linter that detects struct contained context.Context field
-    - cyclop           # checks function and package cyclomatic complexity
     - funlen           # Tool for detection of long functions
-    - gocyclo          # Computes and checks the cyclomatic complexity of functions
-    - godot            # Check if comments end in a period
-    - gomnd            # An analyzer to detect magic numbers.
+    - gochecknoinits   # Checks that no init functions are present in Go code
+    - gomodguard       # Allow and block list linter for direct Go module dependencies. This is different from depguard where there are different block types for example version constraints and module recommendations.
+    - interfacebloat   # A linter that checks length of interface.
     - ireturn          # Accept Interfaces, Return Concrete Types
-    - lll              # Reports long lines
-    - maintidx         # maintidx measures the maintainability index of each function.
-    - makezero         # Finds slice declarations with non-zero initial length
-    - nakedret         # Finds naked returns in functions greater than a specified function length
-    - nestif           # Reports deeply nested if statements
-    - nlreturn         # nlreturn checks for a new line before return and branch statements to increase code clarity
+    - mnd              # An analyzer to detect magic numbers
     - nolintlint       # Reports ill-formed or insufficient nolint directives
     - paralleltest     # paralleltest detects missing usage of t.Parallel() method in your Go test
     - prealloc         # Finds slice declarations that could potentially be preallocated
@@ -104,8 +122,7 @@ linters:
     - rowserrcheck     # checks whether Err of rows is checked successfully
     - sqlclosecheck    # Checks that sql.Rows and sql.Stmt are closed.
     - testpackage      # linter that makes you use a separate _test package
-    - thelper          # thelper detects golang test helpers without t.Helper() call and checks the consistency of test helpers
-    - varnamelen       # checks that the length of a variable's name matches its scope
+    - tparallel        # tparallel detects inappropriate usage of t.Parallel() method in your Go test codes
     - wrapcheck        # Checks that errors returned from external packages are wrapped
     - wsl              # Whitespace Linter - Forces you to use empty lines!
 
@@ -114,9 +131,12 @@ issues:
   exclude-dirs-use-default: false
   exclude-rules:
     # Allow complex tests and examples, better to be self contained
-    - path: (examples|main\.go|_test\.go)
+    - path: (examples|main\.go)
       linters:
+        - gocognit
         - forbidigo
+    - path: _test\.go
+      linters:
         - gocognit
 
     # Allow forbidden identifiers in CLI commands

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/README.md

@@ -7,7 +7,7 @@
 <p align="center">
   <a href="https://pion.ly"><img src="https://img.shields.io/badge/pion-srtp-gray.svg?longCache=true&colorB=brightgreen" alt="Pion SRTP"></a>
   <a href="https://sourcegraph.com/github.com/pion/srtp?badge"><img src="https://sourcegraph.com/github.com/pion/srtp/-/badge.svg" alt="Sourcegraph Widget"></a>
-  <a href="https://pion.ly/slack"><img src="https://img.shields.io/badge/join-us%20on%20slack-gray.svg?longCache=true&logo=slack&colorB=brightgreen" alt="Slack Widget"></a>
+  <a href="https://discord.gg/PngbdqpFbt"><img src="https://img.shields.io/badge/join-us%20on%20discord-gray.svg?longCache=true&logo=discord&colorB=brightblue" alt="join us on Discord"></a> <a href="https://bsky.app/profile/pion.ly"><img src="https://img.shields.io/badge/follow-us%20on%20bluesky-gray.svg?longCache=true&logo=bluesky&colorB=brightblue" alt="Follow us on Bluesky"></a>
   <br>
   <img alt="GitHub Workflow Status" src="https://img.shields.io/github/actions/workflow/status/pion/srtp/test.yaml">
   <a href="https://pkg.go.dev/github.com/pion/srtp"><img src="https://pkg.go.dev/badge/github.com/pion/srtp.svg" alt="Go Reference"></a>
@@ -21,9 +21,9 @@
 The library is used as a part of our WebRTC implementation. Please refer to that [roadmap](https://github.com/pion/webrtc/issues/9) to track our major milestones.
 
 ### Community
-Pion has an active community on the [Slack](https://pion.ly/slack).
+Pion has an active community on the [Discord](https://discord.gg/PngbdqpFbt).
 
-Follow the [Pion Twitter](https://twitter.com/_pion) for project updates and important WebRTC news.
+Follow the [Pion Bluesky](https://bsky.app/profile/pion.ly) or [Pion Twitter](https://twitter.com/_pion) for project updates and important WebRTC news.
 
 We are always looking to support **your projects**. Please reach out if you have something to build!
 If you need commercial support or don't want to use public methods you can contact us at [team@pion.ly](mailto:team@pion.ly)

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/context.go

@@ -24,11 +24,9 @@ const (
 
 	seqNumMedian = 1 << 15
 	seqNumMax    = 1 << 16
-
-	srtcpIndexSize = 4
 )
 
-// Encrypt/Decrypt state for a single SRTP SSRC
+// Encrypt/Decrypt state for a single SRTP SSRC.
 type srtpSSRCState struct {
 	ssrc                 uint32
 	rolloverHasProcessed bool
@@ -36,13 +34,30 @@ type srtpSSRCState struct {
 	replayDetector       replaydetector.ReplayDetector
 }
 
-// Encrypt/Decrypt state for a single SRTCP SSRC
+// Encrypt/Decrypt state for a single SRTCP SSRC.
 type srtcpSSRCState struct {
 	srtcpIndex     uint32
 	ssrc           uint32
 	replayDetector replaydetector.ReplayDetector
 }
 
+// RCCMode is the mode of Roll-over Counter Carrying Transform from RFC 4771.
+type RCCMode int
+
+const (
+	// RCCModeNone is the default mode.
+	RCCModeNone RCCMode = iota
+	// RCCMode1 is RCCm1 mode from RFC 4771. In this mode ROC and truncated auth tag is sent every R-th packet,
+	// and no auth tag in other ones. This mode is not supported by pion/srtp.
+	RCCMode1
+	// RCCMode2 is RCCm2 mode from RFC 4771. In this mode ROC and truncated auth tag is sent every R-th packet,
+	// and full auth tag in other ones. This mode is supported for AES-CM and NULL profiles only.
+	RCCMode2
+	// RCCMode3 is RCCm3 mode from RFC 4771. In this mode ROC is sent every R-th packet (without truncated auth tag),
+	// and no auth tag in other ones. This mode is supported for AES-GCM profiles only.
+	RCCMode3
+)
+
 // Context represents a SRTP cryptographic context.
 // Context can only be used for one-way operations.
 // it must either used ONLY for encryption or ONLY for decryption.
@@ -60,11 +75,18 @@ type Context struct {
 
 	profile ProtectionProfile
 
-	sendMKI []byte                // Master Key Identifier used for encrypting RTP/RTCP packets. Set to nil if MKI is not enabled.
-	mkis    map[string]srtpCipher // Master Key Identifier to cipher mapping. Used for decrypting packets. Empty if MKI is not enabled.
+	// Master Key Identifier used for encrypting RTP/RTCP packets. Set to nil if MKI is not enabled.
+	sendMKI []byte
+	// Master Key Identifier to cipher mapping. Used for decrypting packets. Empty if MKI is not enabled.
+	mkis map[string]srtpCipher
 
 	encryptSRTP  bool
 	encryptSRTCP bool
+
+	rccMode         RCCMode
+	rocTransmitRate uint16
+
+	authTagRTPLen *int
 }
 
 // CreateContext creates a new SRTP Context.
@@ -74,7 +96,11 @@ type Context struct {
 // Following example create SRTP Context with replay protection with window size of 256.
 //
 //	decCtx, err := srtp.CreateContext(key, salt, profile, srtp.SRTPReplayProtection(256))
-func CreateContext(masterKey, masterSalt []byte, profile ProtectionProfile, opts ...ContextOption) (c *Context, err error) {
+func CreateContext(
+	masterKey, masterSalt []byte,
+	profile ProtectionProfile,
+	opts ...ContextOption,
+) (c *Context, err error) {
 	c = &Context{
 		srtpSSRCStates:  map[uint32]*srtpSSRCState{},
 		srtcpSSRCStates: map[uint32]*srtcpSSRCState{},
@@ -96,6 +122,21 @@ func CreateContext(masterKey, masterSalt []byte, profile ProtectionProfile, opts
 		}
 	}
 
+	if err = c.checkRCCMode(); err != nil {
+		return nil, err
+	}
+
+	if c.authTagRTPLen != nil {
+		var authKeyLen int
+		authKeyLen, err = c.profile.AuthKeyLen()
+		if err != nil {
+			return nil, err
+		}
+		if *c.authTagRTPLen > authKeyLen {
+			return nil, errTooLongSRTPAuthTag
+		}
+	}
+
 	c.cipher, err = c.createCipher(c.sendMKI, masterKey, masterSalt, c.encryptSRTP, c.encryptSRTCP)
 	if err != nil {
 		return nil, err
@@ -107,7 +148,8 @@ func CreateContext(masterKey, masterSalt []byte, profile ProtectionProfile, opts
 	return c, nil
 }
 
-// AddCipherForMKI adds new MKI with associated masker key and salt. Context must be created with MasterKeyIndicator option
+// AddCipherForMKI adds new MKI with associated masker key and salt.
+// Context must be created with MasterKeyIndicator option
 // to enable MKI support. MKI must be unique and have the same length as the one used for creating Context.
 // Operation is not thread-safe, you need to provide synchronization with decrypting packets.
 func (c *Context) AddCipherForMKI(mki, masterKey, masterSalt []byte) error {
@@ -126,6 +168,7 @@ func (c *Context) AddCipherForMKI(mki, masterKey, masterSalt []byte) error {
 		return err
 	}
 	c.mkis[string(mki)] = cipher
+
 	return nil
 }
 
@@ -141,18 +184,26 @@ func (c *Context) createCipher(mki, masterKey, masterSalt []byte, encryptSRTP, e
 	}
 
 	if masterKeyLen := len(masterKey); masterKeyLen != keyLen {
-		return nil, fmt.Errorf("%w expected(%d) actual(%d)", errShortSrtpMasterKey, masterKey, keyLen)
+		return nil, fmt.Errorf("%w expected(%d) actual(%d)", errShortSrtpMasterKey, keyLen, masterKey)
 	} else if masterSaltLen := len(masterSalt); masterSaltLen != saltLen {
 		return nil, fmt.Errorf("%w expected(%d) actual(%d)", errShortSrtpMasterSalt, saltLen, masterSaltLen)
 	}
 
+	profileWithArgs := protectionProfileWithArgs{
+		ProtectionProfile: c.profile,
+		authTagRTPLen:     c.authTagRTPLen,
+	}
+
 	switch c.profile {
 	case ProtectionProfileAeadAes128Gcm, ProtectionProfileAeadAes256Gcm:
-		return newSrtpCipherAeadAesGcm(c.profile, masterKey, masterSalt, mki, encryptSRTP, encryptSRTCP)
-	case ProtectionProfileAes128CmHmacSha1_32, ProtectionProfileAes128CmHmacSha1_80, ProtectionProfileAes256CmHmacSha1_32, ProtectionProfileAes256CmHmacSha1_80:
-		return newSrtpCipherAesCmHmacSha1(c.profile, masterKey, masterSalt, mki, encryptSRTP, encryptSRTCP)
+		return newSrtpCipherAeadAesGcm(profileWithArgs, masterKey, masterSalt, mki, encryptSRTP, encryptSRTCP)
+	case ProtectionProfileAes128CmHmacSha1_32,
+		ProtectionProfileAes128CmHmacSha1_80,
+		ProtectionProfileAes256CmHmacSha1_32,
+		ProtectionProfileAes256CmHmacSha1_80:
+		return newSrtpCipherAesCmHmacSha1(profileWithArgs, masterKey, masterSalt, mki, encryptSRTP, encryptSRTCP)
 	case ProtectionProfileNullHmacSha1_32, ProtectionProfileNullHmacSha1_80:
-		return newSrtpCipherAesCmHmacSha1(c.profile, masterKey, masterSalt, mki, false, false)
+		return newSrtpCipherAesCmHmacSha1(profileWithArgs, masterKey, masterSalt, mki, false, false)
 	default:
 		return nil, fmt.Errorf("%w: %#v", errNoSuchSRTPProfile, c.profile)
 	}
@@ -168,6 +219,7 @@ func (c *Context) RemoveMKI(mki []byte) error {
 		return errMKIAlreadyInUse
 	}
 	delete(c.mkis, string(mki))
+
 	return nil
 }
 
@@ -180,19 +232,20 @@ func (c *Context) SetSendMKI(mki []byte) error {
 	}
 	c.sendMKI = mki
 	c.cipher = cipher
+
 	return nil
 }
 
 // https://tools.ietf.org/html/rfc3550#appendix-A.1
-func (s *srtpSSRCState) nextRolloverCount(sequenceNumber uint16) (roc uint32, diff int32, overflow bool) {
+func (s *srtpSSRCState) nextRolloverCount(sequenceNumber uint16) (roc uint32, diff int64, overflow bool) {
 	seq := int32(sequenceNumber)
-	localRoc := uint32(s.index >> 16)
-	localSeq := int32(s.index & (seqNumMax - 1))
+	localRoc := uint32(s.index >> 16)            //nolint:gosec // G115
+	localSeq := int32(s.index & (seqNumMax - 1)) //nolint:gosec // G115
 
 	guessRoc := localRoc
 	var difference int32
 
-	if s.rolloverHasProcessed {
+	if s.rolloverHasProcessed { //nolint:nestif
 		// When localROC is equal to 0, and entering seq-localSeq > seqNumMedian
 		// judgment, it will cause guessRoc calculation error
 		if s.index > seqNumMedian {
@@ -219,16 +272,20 @@ func (s *srtpSSRCState) nextRolloverCount(sequenceNumber uint16) (roc uint32, di
 		}
 	}
 
-	return guessRoc, difference, (guessRoc == 0 && localRoc == maxROC)
+	return guessRoc, int64(difference), (guessRoc == 0 && localRoc == maxROC)
 }
 
-func (s *srtpSSRCState) updateRolloverCount(sequenceNumber uint16, difference int32) {
-	if !s.rolloverHasProcessed {
+func (s *srtpSSRCState) updateRolloverCount(sequenceNumber uint16, difference int64, hasRemoteRoc bool,
+	remoteRoc uint32,
+) {
+	switch {
+	case hasRemoteRoc:
+		s.index = (uint64(remoteRoc) << 16) | uint64(sequenceNumber)
+		s.rolloverHasProcessed = true
+	case !s.rolloverHasProcessed:
 		s.index |= uint64(sequenceNumber)
 		s.rolloverHasProcessed = true
-		return
-	}
-	if difference > 0 {
+	case difference > 0:
 		s.index += uint64(difference)
 	}
 }
@@ -244,6 +301,7 @@ func (c *Context) getSRTPSSRCState(ssrc uint32) *srtpSSRCState {
 		replayDetector: c.newSRTPReplayDetector(),
 	}
 	c.srtpSSRCStates[ssrc] = s
+
 	return s
 }
 
@@ -258,6 +316,7 @@ func (c *Context) getSRTCPSSRCState(ssrc uint32) *srtcpSSRCState {
 		replayDetector: c.newSRTCPReplayDetector(),
 	}
 	c.srtcpSSRCStates[ssrc] = s
+
 	return s
 }
 
@@ -267,7 +326,8 @@ func (c *Context) ROC(ssrc uint32) (uint32, bool) {
 	if !ok {
 		return 0, false
 	}
-	return uint32(s.index >> 16), true
+
+	return uint32(s.index >> 16), true //nolint:gosec // G115
 }
 
 // SetROC sets SRTP rollover counter value of specified SSRC.
@@ -283,6 +343,7 @@ func (c *Context) Index(ssrc uint32) (uint32, bool) {
 	if !ok {
 		return 0, false
 	}
+
 	return s.srtcpIndex, true
 }
 
@@ -291,3 +352,49 @@ func (c *Context) SetIndex(ssrc uint32, index uint32) {
 	s := c.getSRTCPSSRCState(ssrc)
 	s.srtcpIndex = index % (maxSRTCPIndex + 1)
 }
+
+//nolint:cyclop
+func (c *Context) checkRCCMode() error {
+	if c.rccMode == RCCModeNone {
+		return nil
+	}
+
+	if c.rocTransmitRate == 0 {
+		return errZeroRocTransmitRate
+	}
+
+	switch c.profile {
+	case ProtectionProfileAeadAes128Gcm, ProtectionProfileAeadAes256Gcm:
+		// AEAD profiles support RCCMode3 only
+		if c.rccMode != RCCMode3 {
+			return errUnsupportedRccMode
+		}
+
+	case ProtectionProfileAes128CmHmacSha1_32,
+		ProtectionProfileAes256CmHmacSha1_32,
+		ProtectionProfileNullHmacSha1_32:
+		if c.authTagRTPLen == nil {
+			// ROC completely replaces auth tag for _32 profiles. If you really want to use 4-byte
+			// SRTP auth tag with RCC, use SRTPAuthenticationTagLength(4) option.
+			return errTooShortSRTPAuthTag
+		}
+
+		fallthrough // Checks below are common for _32 and _80 profiles.
+
+	case ProtectionProfileAes128CmHmacSha1_80,
+		ProtectionProfileAes256CmHmacSha1_80,
+		ProtectionProfileNullHmacSha1_80:
+		// AES-CM and NULL profiles support RCCMode2 only
+		if c.rccMode != RCCMode2 {
+			return errUnsupportedRccMode
+		}
+		if c.authTagRTPLen != nil && *c.authTagRTPLen < 4 {
+			return errTooShortSRTPAuthTag
+		}
+
+	default:
+		return errUnsupportedRccMode
+	}
+
+	return nil
+}

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/crypto.go

@@ -55,5 +55,6 @@ func xorBytesCTR(block cipher.Block, iv []byte, dst, src []byte) error {
 		}
 		i += n
 	}
+
 	return nil
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/errors.go

@@ -9,9 +9,9 @@ import (
 )
 
 var (
-	// ErrFailedToVerifyAuthTag is returned when decryption fails due to invalid authentication tag
+	// ErrFailedToVerifyAuthTag is returned when decryption fails due to invalid authentication tag.
 	ErrFailedToVerifyAuthTag = errors.New("failed to verify auth tag")
-	// ErrMKINotFound is returned when decryption fails due to unknown MKI value in packet
+	// ErrMKINotFound is returned when decryption fails due to unknown MKI value in packet.
 	ErrMKINotFound = errors.New("MKI not found")
 
 	errDuplicated                    = errors.New("duplicated packet")
@@ -31,11 +31,16 @@ var (
 	errMKIAlreadyInUse               = errors.New("MKI already in use")
 	errMKIIsNotEnabled               = errors.New("MKI is not enabled")
 	errInvalidMKILength              = errors.New("invalid MKI length")
+	errTooLongSRTPAuthTag            = errors.New("SRTP auth tag is too long")
+	errTooShortSRTPAuthTag           = errors.New("SRTP auth tag is too short")
 
 	errStreamNotInited     = errors.New("stream has not been inited, unable to close")
 	errStreamAlreadyClosed = errors.New("stream is already closed")
 	errStreamAlreadyInited = errors.New("stream is already inited")
 	errFailedTypeAssertion = errors.New("failed to cast child")
+
+	errZeroRocTransmitRate = errors.New("ROC transmit rate is zero")
+	errUnsupportedRccMode  = errors.New("unsupported RCC mode")
 )
 
 type duplicatedError struct {

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/key_derivation.go

@@ -40,6 +40,7 @@ func aesCmKeyDerivation(label byte, masterKey, masterSalt []byte, indexOverKdr i
 		block.Encrypt(out[n:n+nBlockSize], prfIn)
 		i++
 	}
+
 	return out[:outLen], nil
 }
 
@@ -50,8 +51,12 @@ func aesCmKeyDerivation(label byte, masterKey, masterSalt []byte, indexOverKdr i
 // -       times the 16-bit RTP sequence number has been reset to zero after
 // -       passing through 65,535
 // i = 2^16 * ROC + SEQ
-// IV = (salt*2 ^ 16) | (ssrc*2 ^ 64) | (i*2 ^ 16)
-func generateCounter(sequenceNumber uint16, rolloverCounter uint32, ssrc uint32, sessionSalt []byte) (counter [16]byte) {
+// IV = (salt*2 ^ 16) | (ssrc*2 ^ 64) | (i*2 ^ 16).
+func generateCounter(
+	sequenceNumber uint16,
+	rolloverCounter uint32,
+	ssrc uint32, sessionSalt []byte,
+) (counter [16]byte) {
 	copy(counter[:], sessionSalt)
 
 	counter[4] ^= byte(ssrc >> 24)

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/keying.go

@@ -5,7 +5,7 @@ package srtp
 
 const labelExtractorDtlsSrtp = "EXTRACTOR-dtls_srtp"
 
-// KeyingMaterialExporter allows package SRTP to extract keying material
+// KeyingMaterialExporter allows package SRTP to extract keying material.
 type KeyingMaterialExporter interface {
 	ExportKeyingMaterial(label string, context []byte, length int) ([]byte, error)
 }
@@ -46,6 +46,7 @@ func (c *Config) ExtractSessionKeysFromDTLS(exporter KeyingMaterialExporter, isC
 		c.Keys.LocalMasterSalt = clientWriteKey[keyLen:]
 		c.Keys.RemoteMasterKey = serverWriteKey[0:keyLen]
 		c.Keys.RemoteMasterSalt = serverWriteKey[keyLen:]
+
 		return nil
 	}
 
@@ -53,5 +54,6 @@ func (c *Config) ExtractSessionKeysFromDTLS(exporter KeyingMaterialExporter, isC
 	c.Keys.LocalMasterSalt = serverWriteKey[keyLen:]
 	c.Keys.RemoteMasterKey = clientWriteKey[0:keyLen]
 	c.Keys.RemoteMasterSalt = clientWriteKey[keyLen:]
+
 	return nil
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/option.go

@@ -16,6 +16,7 @@ func SRTPReplayProtection(windowSize uint) ContextOption { // nolint:revive
 		c.newSRTPReplayDetector = func() replaydetector.ReplayDetector {
 			return replaydetector.New(windowSize, maxROC<<16|maxSequenceNumber)
 		}
+
 		return nil
 	}
 }
@@ -26,6 +27,7 @@ func SRTCPReplayProtection(windowSize uint) ContextOption {
 		c.newSRTCPReplayDetector = func() replaydetector.ReplayDetector {
 			return replaydetector.New(windowSize, maxSRTCPIndex)
 		}
+
 		return nil
 	}
 }
@@ -36,6 +38,7 @@ func SRTPNoReplayProtection() ContextOption { // nolint:revive
 		c.newSRTPReplayDetector = func() replaydetector.ReplayDetector {
 			return &nopReplayDetector{}
 		}
+
 		return nil
 	}
 }
@@ -46,6 +49,7 @@ func SRTCPNoReplayProtection() ContextOption {
 		c.newSRTCPReplayDetector = func() replaydetector.ReplayDetector {
 			return &nopReplayDetector{}
 		}
+
 		return nil
 	}
 }
@@ -54,6 +58,7 @@ func SRTCPNoReplayProtection() ContextOption {
 func SRTPReplayDetectorFactory(fn func() replaydetector.ReplayDetector) ContextOption { // nolint:revive
 	return func(c *Context) error {
 		c.newSRTPReplayDetector = fn
+
 		return nil
 	}
 }
@@ -62,6 +67,7 @@ func SRTPReplayDetectorFactory(fn func() replaydetector.ReplayDetector) ContextO
 func SRTCPReplayDetectorFactory(fn func() replaydetector.ReplayDetector) ContextOption {
 	return func(c *Context) error {
 		c.newSRTCPReplayDetector = fn
+
 		return nil
 	}
 }
@@ -81,6 +87,7 @@ func MasterKeyIndicator(mki []byte) ContextOption {
 			c.sendMKI = make([]byte, len(mki))
 			copy(c.sendMKI, mki)
 		}
+
 		return nil
 	}
 }
@@ -89,15 +96,20 @@ func MasterKeyIndicator(mki []byte) ContextOption {
 func SRTPEncryption() ContextOption { // nolint:revive
 	return func(c *Context) error {
 		c.encryptSRTP = true
+
 		return nil
 	}
 }
 
-// SRTPNoEncryption disables SRTP encryption. This option is useful when you want to use NullCipher for SRTP and keep authentication only.
+// SRTPNoEncryption disables SRTP encryption.
+// This option is useful when you want to use NullCipher for SRTP and keep authentication only.
 // It simplifies debugging and testing, but it is not recommended for production use.
+//
+// Note: you can also use SRTPAuthenticationTagLength(0) to disable authentication tag too.
 func SRTPNoEncryption() ContextOption { // nolint:revive
 	return func(c *Context) error {
 		c.encryptSRTP = false
+
 		return nil
 	}
 }
@@ -106,15 +118,58 @@ func SRTPNoEncryption() ContextOption { // nolint:revive
 func SRTCPEncryption() ContextOption {
 	return func(c *Context) error {
 		c.encryptSRTCP = true
+
 		return nil
 	}
 }
 
-// SRTCPNoEncryption disables SRTCP encryption. This option is useful when you want to use NullCipher for SRTCP and keep authentication only.
+// SRTCPNoEncryption disables SRTCP encryption.
+// This option is useful when you want to use NullCipher for SRTCP and keep authentication only.
 // It simplifies debugging and testing, but it is not recommended for production use.
 func SRTCPNoEncryption() ContextOption {
 	return func(c *Context) error {
 		c.encryptSRTCP = false
+
+		return nil
+	}
+}
+
+// RolloverCounterCarryingTransform enables Rollover Counter Carrying Transform from RFC 4771.
+// ROC value is sent in Authentication Tag of SRTP packets every rocTransmitRate packets.
+//
+// RFC 4771 defines 3 RCC modes. pion/srtp supports mode RCCm2 for AES-CM and NULL profiles,
+// and mode RCCm3 for AES-GCM (AEAD) profiles.
+//
+// From RFC 4771: "[For modes RCCm1 and and RCCm3] the length of the MAC is shorter than the length
+// of the authentication tag. To achieve the same (or less) MAC forgery success probability on all
+// packets when using RCCm1 or RCCm2, as with the default integrity transform in RFC 3711,
+// the tag-length must be set to 14 octets, which means that the length of MAC_tr is 10 octets."
+//
+// Protection profiles ProtectionProfile*CmHmacSha1_32 uses 4-byte SRTP auth tag, so in RCCm2 mode
+// SRTP packets with ROC will not be integrity protected.
+//
+// You can increase the length of the authentication tag using SRTPAuthenticationTagLength option
+// to mitigate this issue.
+func RolloverCounterCarryingTransform(mode RCCMode, rocTransmitRate uint16) ContextOption {
+	return func(c *Context) error {
+		c.rccMode = mode
+		c.rocTransmitRate = rocTransmitRate
+
+		return nil
+	}
+}
+
+// SRTPAuthenticationTagLength sets length of SRTP authentication tag in bytes for AES-CM protection
+// profiles. Decreasing the length of the authentication tag is not recommended for production use,
+// as it decreases integrity protection.
+//
+// Zero value means that there is no authentication tag, what may be useful for debugging and testing.
+//
+// This option is ignored for AEAD profiles.
+func SRTPAuthenticationTagLength(authTagRTPLen int) ContextOption { // nolint:revive
+	return func(c *Context) error {
+		c.authTagRTPLen = &authTagRTPLen
+
 		return nil
 	}
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/protection_profile.go

@@ -5,19 +5,25 @@ package srtp
 
 import "fmt"
 
-// ProtectionProfile specifies Cipher and AuthTag details, similar to TLS cipher suite
+// ProtectionProfile specifies Cipher and AuthTag details, similar to TLS cipher suite.
 type ProtectionProfile uint16
 
 // Supported protection profiles
 // See https://www.iana.org/assignments/srtp-protection/srtp-protection.xhtml
 //
-// AES128_CM_HMAC_SHA1_80 and AES128_CM_HMAC_SHA1_32 are valid SRTP profiles, but they do not have an DTLS-SRTP Protection Profiles ID assigned
-// in RFC 5764. They were in earlier draft of this RFC: https://datatracker.ietf.org/doc/html/draft-ietf-avt-dtls-srtp-03#section-4.1.2
+// AES128_CM_HMAC_SHA1_80 and AES128_CM_HMAC_SHA1_32 are valid SRTP profiles,
+// but they do not have an DTLS-SRTP Protection Profiles ID assigned
+// in RFC 5764. They were in earlier draft of this RFC:
+// https://datatracker.ietf.org/doc/html/draft-ietf-avt-dtls-srtp-03#section-4.1.2
 // Their IDs are now marked as reserved in the IANA registry. Despite this Chrome supports them:
 // https://chromium.googlesource.com/chromium/deps/libsrtp/+/84122798bb16927b1e676bd4f938a6e48e5bf2fe/srtp/include/srtp.h#694
 //
-// Null profiles disable encryption, they are used for debugging and testing. They are not recommended for production use.
-// Use of them is equivalent to using ProtectionProfileAes128CmHmacSha1_NN profile with SRTPNoEncryption and SRTCPNoEncryption options.
+// Null profiles disable encryption, they are used for debugging and testing.
+// They are not recommended for production use.
+// Use of them is equivalent to using ProtectionProfileAes128CmHmacSha1_NN
+// profile with SRTPNoEncryption and SRTCPNoEncryption options.
+//
+//nolint:lll
 const (
 	ProtectionProfileAes128CmHmacSha1_80 ProtectionProfile = 0x0001
 	ProtectionProfileAes128CmHmacSha1_32 ProtectionProfile = 0x0002
@@ -29,10 +35,16 @@ const (
 	ProtectionProfileAeadAes256Gcm       ProtectionProfile = 0x0008
 )
 
-// KeyLen returns length of encryption key in bytes. For all profiles except NullHmacSha1_32 and NullHmacSha1_80 is is also the length of the session key.
+// KeyLen returns length of encryption key in bytes.
+// For all profiles except NullHmacSha1_32 and NullHmacSha1_80 is
+// also the length of the session key.
 func (p ProtectionProfile) KeyLen() (int, error) {
 	switch p {
-	case ProtectionProfileAes128CmHmacSha1_32, ProtectionProfileAes128CmHmacSha1_80, ProtectionProfileAeadAes128Gcm, ProtectionProfileNullHmacSha1_32, ProtectionProfileNullHmacSha1_80:
+	case ProtectionProfileAes128CmHmacSha1_32,
+		ProtectionProfileAes128CmHmacSha1_80,
+		ProtectionProfileAeadAes128Gcm,
+		ProtectionProfileNullHmacSha1_32,
+		ProtectionProfileNullHmacSha1_80:
 		return 16, nil
 	case ProtectionProfileAeadAes256Gcm, ProtectionProfileAes256CmHmacSha1_32, ProtectionProfileAes256CmHmacSha1_80:
 		return 32, nil
@@ -41,10 +53,17 @@ func (p ProtectionProfile) KeyLen() (int, error) {
 	}
 }
 
-// SaltLen returns length of salt key in bytes. For all profiles except NullHmacSha1_32 and NullHmacSha1_80 is is also the length of the session salt.
+// SaltLen returns length of salt key in bytes.
+// For all profiles except NullHmacSha1_32 and NullHmacSha1_80
+// is also the length of the session salt.
 func (p ProtectionProfile) SaltLen() (int, error) {
 	switch p {
-	case ProtectionProfileAes128CmHmacSha1_32, ProtectionProfileAes128CmHmacSha1_80, ProtectionProfileAes256CmHmacSha1_32, ProtectionProfileAes256CmHmacSha1_80, ProtectionProfileNullHmacSha1_32, ProtectionProfileNullHmacSha1_80:
+	case ProtectionProfileAes128CmHmacSha1_32,
+		ProtectionProfileAes128CmHmacSha1_80,
+		ProtectionProfileAes256CmHmacSha1_32,
+		ProtectionProfileAes256CmHmacSha1_80,
+		ProtectionProfileNullHmacSha1_32,
+		ProtectionProfileNullHmacSha1_80:
 		return 14, nil
 	case ProtectionProfileAeadAes128Gcm, ProtectionProfileAeadAes256Gcm:
 		return 12, nil
@@ -53,7 +72,8 @@ func (p ProtectionProfile) SaltLen() (int, error) {
 	}
 }
 
-// AuthTagRTPLen returns length of RTP authentication tag in bytes for AES protection profiles. For AEAD ones it returns zero.
+// AuthTagRTPLen returns length of RTP authentication tag in bytes for AES protection profiles.
+// For AEAD ones it returns zero.
 func (p ProtectionProfile) AuthTagRTPLen() (int, error) {
 	switch p {
 	case ProtectionProfileAes128CmHmacSha1_80, ProtectionProfileAes256CmHmacSha1_80, ProtectionProfileNullHmacSha1_80:
@@ -67,10 +87,17 @@ func (p ProtectionProfile) AuthTagRTPLen() (int, error) {
 	}
 }
 
-// AuthTagRTCPLen returns length of RTCP authentication tag in bytes for AES protection profiles. For AEAD ones it returns zero.
+// AuthTagRTCPLen returns length of RTCP authentication tag in bytes for AES protection profiles.
+//
+//	For AEAD ones it returns zero.
 func (p ProtectionProfile) AuthTagRTCPLen() (int, error) {
 	switch p {
-	case ProtectionProfileAes128CmHmacSha1_32, ProtectionProfileAes128CmHmacSha1_80, ProtectionProfileAes256CmHmacSha1_32, ProtectionProfileAes256CmHmacSha1_80, ProtectionProfileNullHmacSha1_32, ProtectionProfileNullHmacSha1_80:
+	case ProtectionProfileAes128CmHmacSha1_32,
+		ProtectionProfileAes128CmHmacSha1_80,
+		ProtectionProfileAes256CmHmacSha1_32,
+		ProtectionProfileAes256CmHmacSha1_80,
+		ProtectionProfileNullHmacSha1_32,
+		ProtectionProfileNullHmacSha1_80:
 		return 10, nil
 	case ProtectionProfileAeadAes128Gcm, ProtectionProfileAeadAes256Gcm:
 		return 0, nil
@@ -79,10 +106,16 @@ func (p ProtectionProfile) AuthTagRTCPLen() (int, error) {
 	}
 }
 
-// AEADAuthTagLen returns length of authentication tag in bytes for AEAD protection profiles. For AES ones it returns zero.
+// AEADAuthTagLen returns length of authentication tag in bytes for AEAD protection profiles.
+// For AES ones it returns zero.
 func (p ProtectionProfile) AEADAuthTagLen() (int, error) {
 	switch p {
-	case ProtectionProfileAes128CmHmacSha1_32, ProtectionProfileAes128CmHmacSha1_80, ProtectionProfileAes256CmHmacSha1_32, ProtectionProfileAes256CmHmacSha1_80, ProtectionProfileNullHmacSha1_32, ProtectionProfileNullHmacSha1_80:
+	case ProtectionProfileAes128CmHmacSha1_32,
+		ProtectionProfileAes128CmHmacSha1_80,
+		ProtectionProfileAes256CmHmacSha1_32,
+		ProtectionProfileAes256CmHmacSha1_80,
+		ProtectionProfileNullHmacSha1_32,
+		ProtectionProfileNullHmacSha1_80:
 		return 0, nil
 	case ProtectionProfileAeadAes128Gcm, ProtectionProfileAeadAes256Gcm:
 		return 16, nil
@@ -91,10 +124,16 @@ func (p ProtectionProfile) AEADAuthTagLen() (int, error) {
 	}
 }
 
-// AuthKeyLen returns length of authentication key in bytes for AES protection profiles. For AEAD ones it returns zero.
+// AuthKeyLen returns length of authentication key in bytes for AES protection profiles.
+// For AEAD ones it returns zero.
 func (p ProtectionProfile) AuthKeyLen() (int, error) {
 	switch p {
-	case ProtectionProfileAes128CmHmacSha1_32, ProtectionProfileAes128CmHmacSha1_80, ProtectionProfileAes256CmHmacSha1_32, ProtectionProfileAes256CmHmacSha1_80, ProtectionProfileNullHmacSha1_32, ProtectionProfileNullHmacSha1_80:
+	case ProtectionProfileAes128CmHmacSha1_32,
+		ProtectionProfileAes128CmHmacSha1_80,
+		ProtectionProfileAes256CmHmacSha1_32,
+		ProtectionProfileAes256CmHmacSha1_80,
+		ProtectionProfileNullHmacSha1_32,
+		ProtectionProfileNullHmacSha1_80:
 		return 20, nil
 	case ProtectionProfileAeadAes128Gcm, ProtectionProfileAeadAes256Gcm:
 		return 0, nil

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/protection_profile_with_args.go

@@ -0,0 +1,21 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+package srtp
+
+// protectionProfileWithArgs is a wrapper around ProtectionProfile that allows to
+// specify additional arguments for the profile.
+type protectionProfileWithArgs struct {
+	ProtectionProfile
+	authTagRTPLen *int
+}
+
+// AuthTagRTPLen returns length of RTP authentication tag in bytes for AES protection profiles.
+// For AEAD ones it returns zero.
+func (p protectionProfileWithArgs) AuthTagRTPLen() (int, error) {
+	if p.authTagRTPLen != nil {
+		return *p.authTagRTPLen, nil
+	}
+
+	return p.ProtectionProfile.AuthTagRTPLen()
+}

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/session.go

@@ -58,7 +58,7 @@ type Config struct {
 	LocalOptions, RemoteOptions []ContextOption
 }
 
-// SessionKeys bundles the keys required to setup an SRTP session
+// SessionKeys bundles the keys required to setup an SRTP session.
 type SessionKeys struct {
 	LocalMasterKey   []byte
 	LocalMasterSalt  []byte
@@ -74,20 +74,21 @@ func (s *session) getOrCreateReadStream(ssrc uint32, child streamSession, proto
 		return nil, false
 	}
 
-	r, ok := s.readStreams[ssrc]
+	rStream, ok := s.readStreams[ssrc]
 	if ok {
-		return r, false
+		return rStream, false
 	}
 
 	// Create the readStream.
-	r = proto()
+	rStream = proto()
 
-	if err := r.init(child, ssrc); err != nil {
+	if err := rStream.init(child, ssrc); err != nil {
 		return nil, false
 	}
 
-	s.readStreams[ssrc] = r
-	return r, true
+	s.readStreams[ssrc] = rStream
+
+	return rStream, true
 }
 
 func (s *session) removeReadStream(ssrc uint32) {
@@ -109,10 +110,15 @@ func (s *session) close() error {
 	}
 
 	<-s.closed
+
 	return nil
 }
 
-func (s *session) start(localMasterKey, localMasterSalt, remoteMasterKey, remoteMasterSalt []byte, profile ProtectionProfile, child streamSession) error {
+func (s *session) start(
+	localMasterKey, localMasterSalt, remoteMasterKey, remoteMasterSalt []byte,
+	profile ProtectionProfile,
+	child streamSession,
+) error {
 	var err error
 	s.localContext, err = CreateContext(localMasterKey, localMasterSalt, profile, s.localOptions...)
 	if err != nil {
@@ -146,6 +152,7 @@ func (s *session) start(localMasterKey, localMasterSalt, remoteMasterKey, remote
 				if !errors.Is(err, io.EOF) {
 					s.log.Error(err.Error())
 				}
+
 				return
 			}
 

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/session_srtcp.go

@@ -16,7 +16,7 @@ const defaultSessionSRTCPReplayProtectionWindow = 64
 // SessionSRTCP implements io.ReadWriteCloser and provides a bi-directional SRTCP session
 // SRTCP itself does not have a design like this, but it is common in most applications
 // for local/remote to each have their own keying material. This provides those patterns
-// instead of making everyone re-implement
+// instead of making everyone re-implement.
 type SessionSRTCP struct {
 	session
 	writeStream *WriteStreamSRTCP
@@ -47,7 +47,7 @@ func NewSessionSRTCP(conn net.Conn, config *Config) (*SessionSRTCP, error) { //n
 		config.RemoteOptions...,
 	)
 
-	s := &SessionSRTCP{
+	srtcpSession := &SessionSRTCP{
 		session: session{
 			nextConn:            conn,
 			localOptions:        localOpts,
@@ -61,37 +61,39 @@ func NewSessionSRTCP(conn net.Conn, config *Config) (*SessionSRTCP, error) { //n
 			log:                 loggerFactory.NewLogger("srtp"),
 		},
 	}
-	s.writeStream = &WriteStreamSRTCP{s}
+	srtcpSession.writeStream = &WriteStreamSRTCP{srtcpSession}
 
-	err := s.session.start(
+	err := srtcpSession.session.start(
 		config.Keys.LocalMasterKey, config.Keys.LocalMasterSalt,
 		config.Keys.RemoteMasterKey, config.Keys.RemoteMasterSalt,
 		config.Profile,
-		s,
+		srtcpSession,
 	)
 	if err != nil {
 		return nil, err
 	}
-	return s, nil
+
+	return srtcpSession, nil
 }
 
-// OpenWriteStream returns the global write stream for the Session
+// OpenWriteStream returns the global write stream for the Session.
 func (s *SessionSRTCP) OpenWriteStream() (*WriteStreamSRTCP, error) {
 	return s.writeStream, nil
 }
 
 // OpenReadStream opens a read stream for the given SSRC, it can be used
-// if you want a certain SSRC, but don't want to wait for AcceptStream
+// if you want a certain SSRC, but don't want to wait for AcceptStream.
 func (s *SessionSRTCP) OpenReadStream(ssrc uint32) (*ReadStreamSRTCP, error) {
 	r, _ := s.session.getOrCreateReadStream(ssrc, s, newReadStreamSRTCP)
 
 	if readStream, ok := r.(*ReadStreamSRTCP); ok {
 		return readStream, nil
 	}
+
 	return nil, errFailedTypeAssertion
 }
 
-// AcceptStream returns a stream to handle RTCP for a single SSRC
+// AcceptStream returns a stream to handle RTCP for a single SSRC.
 func (s *SessionSRTCP) AcceptStream() (*ReadStreamSRTCP, uint32, error) {
 	stream, ok := <-s.newStream
 	if !ok {
@@ -106,7 +108,7 @@ func (s *SessionSRTCP) AcceptStream() (*ReadStreamSRTCP, uint32, error) {
 	return readStream, stream.GetSSRC(), nil
 }
 
-// Close ends the session
+// Close ends the session.
 func (s *SessionSRTCP) Close() error {
 	return s.session.close()
 }
@@ -122,12 +124,13 @@ func (s *SessionSRTCP) write(buf []byte) (int, error) {
 	defer bufferpool.Put(ibuf)
 
 	s.session.localContextMutex.Lock()
-	encrypted, err := s.localContext.EncryptRTCP(ibuf.([]byte), buf, nil)
+	encrypted, err := s.localContext.EncryptRTCP(ibuf.([]byte), buf, nil) //nolint:forcetypeassert
 	s.session.localContextMutex.Unlock()
 
 	if err != nil {
 		return 0, err
 	}
+
 	return s.session.nextConn.Write(encrypted)
 }
 

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/session_srtp.go

@@ -17,7 +17,7 @@ const defaultSessionSRTPReplayProtectionWindow = 64
 // SessionSRTP implements io.ReadWriteCloser and provides a bi-directional SRTP session
 // SRTP itself does not have a design like this, but it is common in most applications
 // for local/remote to each have their own keying material. This provides those patterns
-// instead of making everyone re-implement
+// instead of making everyone re-implement.
 type SessionSRTP struct {
 	session
 	writeStream *WriteStreamSRTP
@@ -48,7 +48,7 @@ func NewSessionSRTP(conn net.Conn, config *Config) (*SessionSRTP, error) { //nol
 		config.RemoteOptions...,
 	)
 
-	s := &SessionSRTP{
+	srtpSession := &SessionSRTP{
 		session: session{
 			nextConn:            conn,
 			localOptions:        localOpts,
@@ -62,27 +62,28 @@ func NewSessionSRTP(conn net.Conn, config *Config) (*SessionSRTP, error) { //nol
 			log:                 loggerFactory.NewLogger("srtp"),
 		},
 	}
-	s.writeStream = &WriteStreamSRTP{s}
+	srtpSession.writeStream = &WriteStreamSRTP{srtpSession}
 
-	err := s.session.start(
+	err := srtpSession.session.start(
 		config.Keys.LocalMasterKey, config.Keys.LocalMasterSalt,
 		config.Keys.RemoteMasterKey, config.Keys.RemoteMasterSalt,
 		config.Profile,
-		s,
+		srtpSession,
 	)
 	if err != nil {
 		return nil, err
 	}
-	return s, nil
+
+	return srtpSession, nil
 }
 
-// OpenWriteStream returns the global write stream for the Session
+// OpenWriteStream returns the global write stream for the Session.
 func (s *SessionSRTP) OpenWriteStream() (*WriteStreamSRTP, error) {
 	return s.writeStream, nil
 }
 
 // OpenReadStream opens a read stream for the given SSRC, it can be used
-// if you want a certain SSRC, but don't want to wait for AcceptStream
+// if you want a certain SSRC, but don't want to wait for AcceptStream.
 func (s *SessionSRTP) OpenReadStream(ssrc uint32) (*ReadStreamSRTP, error) {
 	r, _ := s.session.getOrCreateReadStream(ssrc, s, newReadStreamSRTP)
 
@@ -93,7 +94,7 @@ func (s *SessionSRTP) OpenReadStream(ssrc uint32) (*ReadStreamSRTP, error) {
 	return nil, errFailedTypeAssertion
 }
 
-// AcceptStream returns a stream to handle RTCP for a single SSRC
+// AcceptStream returns a stream to handle RTCP for a single SSRC.
 func (s *SessionSRTP) AcceptStream() (*ReadStreamSRTP, uint32, error) {
 	stream, ok := <-s.newStream
 	if !ok {
@@ -108,7 +109,7 @@ func (s *SessionSRTP) AcceptStream() (*ReadStreamSRTP, uint32, error) {
 	return readStream, stream.GetSSRC(), nil
 }
 
-// Close ends the session
+// Close ends the session.
 func (s *SessionSRTP) Close() error {
 	return s.session.close()
 }
@@ -149,8 +150,20 @@ func (s *SessionSRTP) writeRTP(header *rtp.Header, payload []byte) (int, error)
 	ibuf := bufferpool.Get()
 	defer bufferpool.Put(ibuf)
 
+	buf := ibuf.([]byte)                                                      // nolint:forcetypeassert
+	headerLen, marshalSize := rtp.HeaderAndPacketMarshalSize(header, payload) // nolint:staticcheck
+	if len(buf) < marshalSize+20 {
+		// The buffer is too small, so we need to allocate a new one. Add 20 bytes for auth tag like
+		// for bufferpool above.
+		buf = make([]byte, marshalSize+20)
+	}
+	_, err := rtp.MarshalPacketTo(buf, header, payload) // nolint:staticcheck
+	if err != nil {
+		return 0, err
+	}
+
 	s.session.localContextMutex.Lock()
-	encrypted, err := s.localContext.encryptRTP(ibuf.([]byte), header, payload)
+	encrypted, err := s.localContext.encryptRTP(buf, header, headerLen, buf[:marshalSize])
 	s.session.localContextMutex.Unlock()
 
 	if err != nil {
@@ -165,13 +178,13 @@ func (s *SessionSRTP) setWriteDeadline(t time.Time) error {
 }
 
 func (s *SessionSRTP) decrypt(buf []byte) error {
-	h := &rtp.Header{}
-	headerLen, err := h.Unmarshal(buf)
+	header := &rtp.Header{}
+	headerLen, err := header.Unmarshal(buf)
 	if err != nil {
 		return err
 	}
 
-	r, isNew := s.session.getOrCreateReadStream(h.SSRC, s, newReadStreamSRTP)
+	r, isNew := s.session.getOrCreateReadStream(header.SSRC, s, newReadStreamSRTP)
 	if r == nil {
 		return nil // Session has been closed
 	} else if isNew {
@@ -186,7 +199,7 @@ func (s *SessionSRTP) decrypt(buf []byte) error {
 		return errFailedTypeAssertion
 	}
 
-	decrypted, err := s.remoteContext.decryptRTP(buf, buf, h, headerLen)
+	decrypted, err := s.remoteContext.decryptRTP(buf, buf, header, headerLen)
 	if err != nil {
 		return err
 	}

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/srtcp.go

@@ -10,9 +10,23 @@ import (
 	"github.com/pion/rtcp"
 )
 
-const maxSRTCPIndex = 0x7FFFFFFF
+/*
+Simplified structure of SRTCP Packets:
+- RTCP Header
+- Payload
+- AEAD Auth Tag - used by AEAD profiles only
+- E flag and SRTCP Index
+- MKI (optional)
+- Auth Tag - used by non-AEAD profiles only
+*/
 
-const srtcpHeaderSize = 8
+const (
+	maxSRTCPIndex = 0x7FFFFFFF
+
+	srtcpHeaderSize     = 8
+	srtcpIndexSize      = 4
+	srtcpEncryptionFlag = 0x80
+)
 
 func (c *Context) decryptRTCP(dst, encrypted []byte) ([]byte, error) {
 	authTagLen, err := c.cipher.AuthTagRTCPLen()
@@ -42,25 +56,24 @@ func (c *Context) decryptRTCP(dst, encrypted []byte) ([]byte, error) {
 	cipher := c.cipher
 	if len(c.mkis) > 0 {
 		// Find cipher for MKI
-		actualMKI := c.cipher.getMKI(encrypted, false)
+		actualMKI := encrypted[len(encrypted)-mkiLen-authTagLen : len(encrypted)-authTagLen]
 		cipher, ok = c.mkis[string(actualMKI)]
 		if !ok {
 			return nil, ErrMKINotFound
 		}
 	}
 
-	out := allocateIfMismatch(dst, encrypted)
-
-	out, err = cipher.decryptRTCP(out, encrypted, index, ssrc)
+	out, err := cipher.decryptRTCP(dst, encrypted, index, ssrc)
 	if err != nil {
 		return nil, err
 	}
 
 	markAsValid()
+
 	return out, nil
 }
 
-// DecryptRTCP decrypts a buffer that contains a RTCP packet
+// DecryptRTCP decrypts a buffer that contains a RTCP packet.
 func (c *Context) DecryptRTCP(dst, encrypted []byte, header *rtcp.Header) ([]byte, error) {
 	if header == nil {
 		header = &rtcp.Header{}
@@ -79,9 +92,9 @@ func (c *Context) encryptRTCP(dst, decrypted []byte) ([]byte, error) {
 	}
 
 	ssrc := binary.BigEndian.Uint32(decrypted[4:])
-	s := c.getSRTCPSSRCState(ssrc)
+	ssrcState := c.getSRTCPSSRCState(ssrc)
 
-	if s.srtcpIndex >= maxSRTCPIndex {
+	if ssrcState.srtcpIndex >= maxSRTCPIndex {
 		// ... when 2^48 SRTP packets or 2^31 SRTCP packets have been secured with the same key
 		// (whichever occurs before), the key management MUST be called to provide new master key(s)
 		// (previously stored and used keys MUST NOT be used again), or the session MUST be terminated.
@@ -90,12 +103,12 @@ func (c *Context) encryptRTCP(dst, decrypted []byte) ([]byte, error) {
 	}
 
 	// We roll over early because MSB is used for marking as encrypted
-	s.srtcpIndex++
+	ssrcState.srtcpIndex++
 
-	return c.cipher.encryptRTCP(dst, decrypted, s.srtcpIndex, ssrc)
+	return c.cipher.encryptRTCP(dst, decrypted, ssrcState.srtcpIndex, ssrc)
 }
 
-// EncryptRTCP Encrypts a RTCP packet
+// EncryptRTCP Encrypts a RTCP packet.
 func (c *Context) EncryptRTCP(dst, decrypted []byte, header *rtcp.Header) ([]byte, error) {
 	if header == nil {
 		header = &rtcp.Header{}

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/srtp.go

@@ -5,11 +5,21 @@
 package srtp
 
 import (
+	"encoding/binary"
 	"fmt"
 
 	"github.com/pion/rtp"
 )
 
+/*
+Simplified structure of SRTP Packets:
+- RTP Header (with optional RTP Header Extension)
+- Payload (with optional padding)
+- AEAD Auth Tag - used by AEAD profiles only
+- MKI (optional)
+- Auth Tag - used by non-AEAD profiles only. When RCC is used with AEAD profiles, the ROC is sent here.
+*/
+
 func (c *Context) decryptRTP(dst, ciphertext []byte, header *rtp.Header, headerLen int) ([]byte, error) {
 	authTagLen, err := c.cipher.AuthTagRTPLen()
 	if err != nil {
@@ -21,17 +31,31 @@ func (c *Context) decryptRTP(dst, ciphertext []byte, header *rtp.Header, headerL
 	}
 	mkiLen := len(c.sendMKI)
 
+	var hasRocInPacket bool
+	hasRocInPacket, authTagLen = c.hasROCInPacket(header, authTagLen)
+
 	// Verify that encrypted packet is long enough
 	if len(ciphertext) < (headerLen + aeadAuthTagLen + mkiLen + authTagLen) {
 		return nil, fmt.Errorf("%w: %d", errTooShortRTP, len(ciphertext))
 	}
 
-	s := c.getSRTPSSRCState(header.SSRC)
+	ssrcState := c.getSRTPSSRCState(header.SSRC)
 
-	roc, diff, _ := s.nextRolloverCount(header.SequenceNumber)
-	markAsValid, ok := s.replayDetector.Check(
-		(uint64(roc) << 16) | uint64(header.SequenceNumber),
-	)
+	var roc uint32
+	var diff int64
+	var index uint64
+	if !hasRocInPacket {
+		// The ROC is not sent in the packet. We need to guess it.
+		roc, diff, _ = ssrcState.nextRolloverCount(header.SequenceNumber)
+		index = (uint64(roc) << 16) | uint64(header.SequenceNumber)
+	} else {
+		// Extract ROC from the packet. The ROC is sent in the first 4 bytes of the auth tag.
+		roc = binary.BigEndian.Uint32(ciphertext[len(ciphertext)-authTagLen:])
+		index = (uint64(roc) << 16) | uint64(header.SequenceNumber)
+		diff = int64(ssrcState.index) - int64(index) //nolint:gosec
+	}
+
+	markAsValid, ok := ssrcState.replayDetector.Check(index)
 	if !ok {
 		return nil, &duplicatedError{
 			Proto: "srtp", SSRC: header.SSRC, Index: uint32(header.SequenceNumber),
@@ -41,7 +65,7 @@ func (c *Context) decryptRTP(dst, ciphertext []byte, header *rtp.Header, headerL
 	cipher := c.cipher
 	if len(c.mkis) > 0 {
 		// Find cipher for MKI
-		actualMKI := c.cipher.getMKI(ciphertext, true)
+		actualMKI := ciphertext[len(ciphertext)-mkiLen-authTagLen : len(ciphertext)-authTagLen]
 		cipher, ok = c.mkis[string(actualMKI)]
 		if !ok {
 			return nil, ErrMKINotFound
@@ -50,17 +74,18 @@ func (c *Context) decryptRTP(dst, ciphertext []byte, header *rtp.Header, headerL
 
 	dst = growBufferSize(dst, len(ciphertext)-authTagLen-len(c.sendMKI))
 
-	dst, err = cipher.decryptRTP(dst, ciphertext, header, headerLen, roc)
+	dst, err = cipher.decryptRTP(dst, ciphertext, header, headerLen, roc, hasRocInPacket)
 	if err != nil {
 		return nil, err
 	}
 
 	markAsValid()
-	s.updateRolloverCount(header.SequenceNumber, diff)
+	ssrcState.updateRolloverCount(header.SequenceNumber, diff, hasRocInPacket, roc)
+
 	return dst, nil
 }
 
-// DecryptRTP decrypts a RTP packet with an encrypted payload
+// DecryptRTP decrypts a RTP packet with an encrypted payload.
 func (c *Context) DecryptRTP(dst, encrypted []byte, header *rtp.Header) ([]byte, error) {
 	if header == nil {
 		header = &rtp.Header{}
@@ -75,7 +100,8 @@ func (c *Context) DecryptRTP(dst, encrypted []byte, header *rtp.Header) ([]byte,
 }
 
 // EncryptRTP marshals and encrypts an RTP packet, writing to the dst buffer provided.
-// If the dst buffer does not have the capacity to hold `len(plaintext) + 10` bytes, a new one will be allocated and returned.
+// If the dst buffer does not have the capacity to hold `len(plaintext) + 10` bytes,
+// a new one will be allocated and returned.
 // If a rtp.Header is provided, it will be Unmarshaled using the plaintext.
 func (c *Context) EncryptRTP(dst []byte, plaintext []byte, header *rtp.Header) ([]byte, error) {
 	if header == nil {
@@ -87,13 +113,14 @@ func (c *Context) EncryptRTP(dst []byte, plaintext []byte, header *rtp.Header) (
 		return nil, err
 	}
 
-	return c.encryptRTP(dst, header, plaintext[headerLen:])
+	return c.encryptRTP(dst, header, headerLen, plaintext)
 }
 
 // encryptRTP marshals and encrypts an RTP packet, writing to the dst buffer provided.
 // If the dst buffer does not have the capacity, a new one will be allocated and returned.
 // Similar to above but faster because it can avoid unmarshaling the header and marshaling the payload.
-func (c *Context) encryptRTP(dst []byte, header *rtp.Header, payload []byte) (ciphertext []byte, err error) {
+func (c *Context) encryptRTP(dst []byte, header *rtp.Header, headerLen int, plaintext []byte,
+) (ciphertext []byte, err error) {
 	s := c.getSRTPSSRCState(header.SSRC)
 	roc, diff, ovf := s.nextRolloverCount(header.SequenceNumber)
 	if ovf {
@@ -103,7 +130,30 @@ func (c *Context) encryptRTP(dst []byte, header *rtp.Header, payload []byte) (ci
 		// https://www.rfc-editor.org/rfc/rfc3711#section-9.2
 		return nil, errExceededMaxPackets
 	}
-	s.updateRolloverCount(header.SequenceNumber, diff)
+	s.updateRolloverCount(header.SequenceNumber, diff, false, 0)
 
-	return c.cipher.encryptRTP(dst, header, payload, roc)
+	rocInPacket := false
+	if c.rccMode != RCCModeNone && header.SequenceNumber%c.rocTransmitRate == 0 {
+		rocInPacket = true
+	}
+
+	return c.cipher.encryptRTP(dst, header, headerLen, plaintext, roc, rocInPacket)
+}
+
+func (c *Context) hasROCInPacket(header *rtp.Header, authTagLen int) (bool, int) {
+	hasRocInPacket := false
+	switch c.rccMode {
+	case RCCMode2:
+		// This mode is supported for AES-CM and NULL profiles only. The ROC is sent in the first 4 bytes of the auth tag.
+		hasRocInPacket = header.SequenceNumber%c.rocTransmitRate == 0
+	case RCCMode3:
+		// This mode is supported for AES-GCM only. The ROC is sent as 4-byte auth tag.
+		hasRocInPacket = header.SequenceNumber%c.rocTransmitRate == 0
+		if hasRocInPacket {
+			authTagLen = 4
+		}
+	default:
+	}
+
+	return hasRocInPacket, authTagLen
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/srtp_cipher.go

@@ -6,7 +6,7 @@ package srtp
 import "github.com/pion/rtp"
 
 // cipher represents a implementation of one
-// of the SRTP Specific ciphers
+// of the SRTP Specific ciphers.
 type srtpCipher interface {
 	// AuthTagRTPLen/AuthTagRTCPLen return auth key length of the cipher.
 	// See the note below.
@@ -16,12 +16,11 @@ type srtpCipher interface {
 	// See the note below.
 	AEADAuthTagLen() (int, error)
 	getRTCPIndex([]byte) uint32
-	getMKI([]byte, bool) []byte
 
-	encryptRTP([]byte, *rtp.Header, []byte, uint32) ([]byte, error)
+	encryptRTP([]byte, *rtp.Header, int, []byte, uint32, bool) ([]byte, error)
 	encryptRTCP([]byte, []byte, uint32, uint32) ([]byte, error)
 
-	decryptRTP([]byte, []byte, *rtp.Header, int, uint32) ([]byte, error)
+	decryptRTP([]byte, []byte, *rtp.Header, int, uint32, bool) ([]byte, error)
 	decryptRTCP([]byte, []byte, uint32, uint32) ([]byte, error)
 }
 

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/srtp_cipher_aead_aes_gcm.go

@@ -12,12 +12,8 @@ import (
 	"github.com/pion/rtp"
 )
 
-const (
-	rtcpEncryptionFlag = 0x80
-)
-
 type srtpCipherAeadAesGcm struct {
-	ProtectionProfile
+	protectionProfileWithArgs
 
 	srtpCipher, srtcpCipher cipher.AEAD
 
@@ -28,11 +24,15 @@ type srtpCipherAeadAesGcm struct {
 	srtpEncrypted, srtcpEncrypted bool
 }
 
-func newSrtpCipherAeadAesGcm(profile ProtectionProfile, masterKey, masterSalt, mki []byte, encryptSRTP, encryptSRTCP bool) (*srtpCipherAeadAesGcm, error) {
-	s := &srtpCipherAeadAesGcm{
-		ProtectionProfile: profile,
-		srtpEncrypted:     encryptSRTP,
-		srtcpEncrypted:    encryptSRTCP,
+func newSrtpCipherAeadAesGcm(
+	profile protectionProfileWithArgs,
+	masterKey, masterSalt, mki []byte,
+	encryptSRTP, encryptSRTCP bool,
+) (*srtpCipherAeadAesGcm, error) {
+	srtpCipher := &srtpCipherAeadAesGcm{
+		protectionProfileWithArgs: profile,
+		srtpEncrypted:             encryptSRTP,
+		srtcpEncrypted:            encryptSRTCP,
 	}
 
 	srtpSessionKey, err := aesCmKeyDerivation(labelSRTPEncryption, masterKey, masterSalt, 0, len(masterKey))
@@ -45,7 +45,7 @@ func newSrtpCipherAeadAesGcm(profile ProtectionProfile, masterKey, masterSalt, m
 		return nil, err
 	}
 
-	s.srtpCipher, err = cipher.NewGCM(srtpBlock)
+	srtpCipher.srtpCipher, err = cipher.NewGCM(srtpBlock)
 	if err != nil {
 		return nil, err
 	}
@@ -60,72 +60,109 @@ func newSrtpCipherAeadAesGcm(profile ProtectionProfile, masterKey, masterSalt, m
 		return nil, err
 	}
 
-	s.srtcpCipher, err = cipher.NewGCM(srtcpBlock)
+	srtpCipher.srtcpCipher, err = cipher.NewGCM(srtcpBlock)
 	if err != nil {
 		return nil, err
 	}
 
-	if s.srtpSessionSalt, err = aesCmKeyDerivation(labelSRTPSalt, masterKey, masterSalt, 0, len(masterSalt)); err != nil {
+	if srtpCipher.srtpSessionSalt, err = aesCmKeyDerivation(
+		labelSRTPSalt, masterKey, masterSalt, 0, len(masterSalt),
+	); err != nil {
 		return nil, err
-	} else if s.srtcpSessionSalt, err = aesCmKeyDerivation(labelSRTCPSalt, masterKey, masterSalt, 0, len(masterSalt)); err != nil {
+	} else if srtpCipher.srtcpSessionSalt, err = aesCmKeyDerivation(
+		labelSRTCPSalt, masterKey, masterSalt, 0, len(masterSalt),
+	); err != nil {
 		return nil, err
 	}
 
 	mkiLen := len(mki)
 	if mkiLen > 0 {
-		s.mki = make([]byte, mkiLen)
-		copy(s.mki, mki)
+		srtpCipher.mki = make([]byte, mkiLen)
+		copy(srtpCipher.mki, mki)
 	}
 
-	return s, nil
+	return srtpCipher, nil
 }
 
-func (s *srtpCipherAeadAesGcm) encryptRTP(dst []byte, header *rtp.Header, payload []byte, roc uint32) (ciphertext []byte, err error) {
+func (s *srtpCipherAeadAesGcm) encryptRTP(
+	dst []byte,
+	header *rtp.Header,
+	headerLen int,
+	plaintext []byte,
+	roc uint32,
+	rocInAuthTag bool,
+) (ciphertext []byte, err error) {
+	payload := plaintext[headerLen:]
+	payloadLen := len(payload)
+
 	// Grow the given buffer to fit the output.
 	authTagLen, err := s.AEADAuthTagLen()
 	if err != nil {
 		return nil, err
 	}
-	dst = growBufferSize(dst, header.MarshalSize()+len(payload)+authTagLen+len(s.mki))
+	authPartLen := header.MarshalSize() + len(payload) + authTagLen
+	dstLen := authPartLen + len(s.mki)
+	if rocInAuthTag {
+		dstLen += 4
+	}
+	dst = growBufferSize(dst, dstLen)
+	sameBuffer := isSameBuffer(dst, plaintext)
 
-	n, err := header.MarshalTo(dst)
-	if err != nil {
-		return nil, err
+	// Copy the header unencrypted.
+	if !sameBuffer {
+		copy(dst, plaintext[:headerLen])
 	}
 
 	iv := s.rtpInitializationVector(header, roc)
 	if s.srtpEncrypted {
-		s.srtpCipher.Seal(dst[n:n], iv[:], payload, dst[:n])
+		s.srtpCipher.Seal(dst[headerLen:headerLen], iv[:], payload, dst[:headerLen])
 	} else {
-		clearLen := n + len(payload)
-		copy(dst[n:], payload)
+		clearLen := headerLen + payloadLen
+		if !sameBuffer {
+			copy(dst[headerLen:], payload)
+		}
 		s.srtpCipher.Seal(dst[clearLen:clearLen], iv[:], nil, dst[:clearLen])
 	}
 
 	// Add MKI after the encrypted payload
 	if len(s.mki) > 0 {
-		copy(dst[len(dst)-len(s.mki):], s.mki)
+		copy(dst[authPartLen:], s.mki)
+	}
+
+	if rocInAuthTag {
+		binary.BigEndian.PutUint32(dst[len(dst)-4:], roc)
 	}
 
 	return dst, nil
 }
 
-func (s *srtpCipherAeadAesGcm) decryptRTP(dst, ciphertext []byte, header *rtp.Header, headerLen int, roc uint32) ([]byte, error) {
+func (s *srtpCipherAeadAesGcm) decryptRTP(
+	dst, ciphertext []byte,
+	header *rtp.Header,
+	headerLen int,
+	roc uint32,
+	rocInAuthTag bool,
+) ([]byte, error) {
 	// Grow the given buffer to fit the output.
 	authTagLen, err := s.AEADAuthTagLen()
 	if err != nil {
 		return nil, err
 	}
-	nDst := len(ciphertext) - authTagLen - len(s.mki)
+	rocLen := 0
+	if rocInAuthTag {
+		rocLen = 4
+	}
+	nDst := len(ciphertext) - authTagLen - len(s.mki) - rocLen
 	if nDst < headerLen {
 		// Size of ciphertext is shorter than AEAD auth tag len.
 		return nil, ErrFailedToVerifyAuthTag
 	}
 	dst = growBufferSize(dst, nDst)
+	sameBuffer := isSameBuffer(dst, ciphertext)
 
 	iv := s.rtpInitializationVector(header, roc)
 
-	nEnd := len(ciphertext) - len(s.mki)
+	nEnd := len(ciphertext) - len(s.mki) - rocLen
 	if s.srtpEncrypted {
 		if _, err := s.srtpCipher.Open(
 			dst[headerLen:headerLen], iv[:], ciphertext[headerLen:nEnd], ciphertext[:headerLen],
@@ -139,10 +176,16 @@ func (s *srtpCipherAeadAesGcm) decryptRTP(dst, ciphertext []byte, header *rtp.He
 		); err != nil {
 			return nil, fmt.Errorf("%w: %w", ErrFailedToVerifyAuthTag, err)
 		}
-		copy(dst[headerLen:], ciphertext[headerLen:nDataEnd])
+		if !sameBuffer {
+			copy(dst[headerLen:], ciphertext[headerLen:nDataEnd])
+		}
+	}
+
+	// Copy the header unencrypted.
+	if !sameBuffer {
+		copy(dst[:headerLen], ciphertext[:headerLen])
 	}
 
-	copy(dst[:headerLen], ciphertext[:headerLen])
 	return dst, nil
 }
 
@@ -154,28 +197,36 @@ func (s *srtpCipherAeadAesGcm) encryptRTCP(dst, decrypted []byte, srtcpIndex uin
 	aadPos := len(decrypted) + authTagLen
 	// Grow the given buffer to fit the output.
 	dst = growBufferSize(dst, aadPos+srtcpIndexSize+len(s.mki))
+	sameBuffer := isSameBuffer(dst, decrypted)
 
 	iv := s.rtcpInitializationVector(srtcpIndex, ssrc)
 	if s.srtcpEncrypted {
 		aad := s.rtcpAdditionalAuthenticatedData(decrypted, srtcpIndex)
-		copy(dst[:8], decrypted[:8])
-		copy(dst[aadPos:aadPos+4], aad[8:12])
-		s.srtcpCipher.Seal(dst[8:8], iv[:], decrypted[8:], aad[:])
+		if !sameBuffer {
+			// Copy the header unencrypted.
+			copy(dst[:srtcpHeaderSize], decrypted[:srtcpHeaderSize])
+		}
+		// Copy index to the proper place.
+		copy(dst[aadPos:aadPos+srtcpIndexSize], aad[8:12])
+		s.srtcpCipher.Seal(dst[srtcpHeaderSize:srtcpHeaderSize], iv[:], decrypted[srtcpHeaderSize:], aad[:])
 	} else {
 		// Copy the packet unencrypted.
-		copy(dst, decrypted)
+		if !sameBuffer {
+			copy(dst, decrypted)
+		}
 		// Append the SRTCP index to the end of the packet - this will form the AAD.
 		binary.BigEndian.PutUint32(dst[len(decrypted):], srtcpIndex)
 		// Generate the authentication tag.
 		tag := make([]byte, authTagLen)
-		s.srtcpCipher.Seal(tag[0:0], iv[:], nil, dst[:len(decrypted)+4])
+		s.srtcpCipher.Seal(tag[0:0], iv[:], nil, dst[:len(decrypted)+srtcpIndexSize])
 		// Copy index to the proper place.
-		copy(dst[aadPos:], dst[len(decrypted):len(decrypted)+4])
+		copy(dst[aadPos:], dst[len(decrypted):len(decrypted)+srtcpIndexSize])
 		// Copy the auth tag after RTCP payload.
 		copy(dst[len(decrypted):], tag)
 	}
 
-	copy(dst[aadPos+4:], s.mki)
+	copy(dst[aadPos+srtcpIndexSize:], s.mki)
+
 	return dst, nil
 }
 
@@ -192,12 +243,14 @@ func (s *srtpCipherAeadAesGcm) decryptRTCP(dst, encrypted []byte, srtcpIndex, ss
 		return nil, ErrFailedToVerifyAuthTag
 	}
 	dst = growBufferSize(dst, nDst)
+	sameBuffer := isSameBuffer(dst, encrypted)
 
-	isEncrypted := encrypted[aadPos]>>7 != 0
+	isEncrypted := encrypted[aadPos]&srtcpEncryptionFlag != 0
 	iv := s.rtcpInitializationVector(srtcpIndex, ssrc)
 	if isEncrypted {
 		aad := s.rtcpAdditionalAuthenticatedData(encrypted, srtcpIndex)
-		if _, err := s.srtcpCipher.Open(dst[8:8], iv[:], encrypted[8:aadPos], aad[:]); err != nil {
+		if _, err := s.srtcpCipher.Open(dst[srtcpHeaderSize:srtcpHeaderSize], iv[:], encrypted[srtcpHeaderSize:aadPos],
+			aad[:]); err != nil {
 			return nil, fmt.Errorf("%w: %w", ErrFailedToVerifyAuthTag, err)
 		}
 	} else {
@@ -211,10 +264,16 @@ func (s *srtpCipherAeadAesGcm) decryptRTCP(dst, encrypted []byte, srtcpIndex, ss
 			return nil, fmt.Errorf("%w: %w", ErrFailedToVerifyAuthTag, err)
 		}
 		// Copy the unencrypted payload.
-		copy(dst[8:], encrypted[8:dataEnd])
+		if !sameBuffer {
+			copy(dst[srtcpHeaderSize:], encrypted[srtcpHeaderSize:dataEnd])
+		}
+	}
+
+	// Copy the header unencrypted.
+	if !sameBuffer {
+		copy(dst[:srtcpHeaderSize], encrypted[:srtcpHeaderSize])
 	}
 
-	copy(dst[:8], encrypted[:8])
 	return dst, nil
 }
 
@@ -233,6 +292,7 @@ func (s *srtpCipherAeadAesGcm) rtpInitializationVector(header *rtp.Header, roc u
 	for i := range iv {
 		iv[i] ^= s.srtpSessionSalt[i]
 	}
+
 	return iv
 }
 
@@ -252,6 +312,7 @@ func (s *srtpCipherAeadAesGcm) rtcpInitializationVector(srtcpIndex uint32, ssrc
 	for i := range iv {
 		iv[i] ^= s.srtcpSessionSalt[i]
 	}
+
 	return iv
 }
 
@@ -265,21 +326,11 @@ func (s *srtpCipherAeadAesGcm) rtcpAdditionalAuthenticatedData(rtcpPacket []byte
 
 	copy(aad[:], rtcpPacket[:8])
 	binary.BigEndian.PutUint32(aad[8:], srtcpIndex)
-	aad[8] |= rtcpEncryptionFlag
+	aad[8] |= srtcpEncryptionFlag
 
 	return aad
 }
 
 func (s *srtpCipherAeadAesGcm) getRTCPIndex(in []byte) uint32 {
-	return binary.BigEndian.Uint32(in[len(in)-len(s.mki)-4:]) &^ (rtcpEncryptionFlag << 24)
-}
-
-func (s *srtpCipherAeadAesGcm) getMKI(in []byte, _ bool) []byte {
-	mkiLen := len(s.mki)
-	if mkiLen == 0 {
-		return nil
-	}
-
-	tailOffset := len(in) - mkiLen
-	return in[tailOffset:]
+	return binary.BigEndian.Uint32(in[len(in)-len(s.mki)-srtcpIndexSize:]) &^ (srtcpEncryptionFlag << 24)
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/srtp_cipher_aes_cm_hmac_sha1.go

@@ -16,7 +16,7 @@ import ( //nolint:gci
 )
 
 type srtpCipherAesCmHmacSha1 struct {
-	ProtectionProfile
+	protectionProfileWithArgs
 
 	srtpSessionSalt []byte
 	srtpSessionAuth hash.Hash
@@ -31,35 +31,46 @@ type srtpCipherAesCmHmacSha1 struct {
 	mki []byte
 }
 
-func newSrtpCipherAesCmHmacSha1(profile ProtectionProfile, masterKey, masterSalt, mki []byte, encryptSRTP, encryptSRTCP bool) (*srtpCipherAesCmHmacSha1, error) {
-	if profile == ProtectionProfileNullHmacSha1_80 || profile == ProtectionProfileNullHmacSha1_32 {
+//nolint:cyclop
+func newSrtpCipherAesCmHmacSha1(
+	profile protectionProfileWithArgs,
+	masterKey, masterSalt, mki []byte,
+	encryptSRTP, encryptSRTCP bool,
+) (*srtpCipherAesCmHmacSha1, error) {
+	switch profile.ProtectionProfile {
+	case ProtectionProfileNullHmacSha1_80, ProtectionProfileNullHmacSha1_32:
 		encryptSRTP = false
 		encryptSRTCP = false
+	default:
 	}
 
-	s := &srtpCipherAesCmHmacSha1{
-		ProtectionProfile: profile,
-		srtpEncrypted:     encryptSRTP,
-		srtcpEncrypted:    encryptSRTCP,
+	srtpCipher := &srtpCipherAesCmHmacSha1{
+		protectionProfileWithArgs: profile,
+		srtpEncrypted:             encryptSRTP,
+		srtcpEncrypted:            encryptSRTCP,
 	}
 
 	srtpSessionKey, err := aesCmKeyDerivation(labelSRTPEncryption, masterKey, masterSalt, 0, len(masterKey))
 	if err != nil {
 		return nil, err
-	} else if s.srtpBlock, err = aes.NewCipher(srtpSessionKey); err != nil {
+	} else if srtpCipher.srtpBlock, err = aes.NewCipher(srtpSessionKey); err != nil {
 		return nil, err
 	}
 
 	srtcpSessionKey, err := aesCmKeyDerivation(labelSRTCPEncryption, masterKey, masterSalt, 0, len(masterKey))
 	if err != nil {
 		return nil, err
-	} else if s.srtcpBlock, err = aes.NewCipher(srtcpSessionKey); err != nil {
+	} else if srtpCipher.srtcpBlock, err = aes.NewCipher(srtcpSessionKey); err != nil {
 		return nil, err
 	}
 
-	if s.srtpSessionSalt, err = aesCmKeyDerivation(labelSRTPSalt, masterKey, masterSalt, 0, len(masterSalt)); err != nil {
+	if srtpCipher.srtpSessionSalt, err = aesCmKeyDerivation(
+		labelSRTPSalt, masterKey, masterSalt, 0, len(masterSalt),
+	); err != nil {
 		return nil, err
-	} else if s.srtcpSessionSalt, err = aesCmKeyDerivation(labelSRTCPSalt, masterKey, masterSalt, 0, len(masterSalt)); err != nil {
+	} else if srtpCipher.srtcpSessionSalt, err = aesCmKeyDerivation(
+		labelSRTCPSalt, masterKey, masterSalt, 0, len(masterSalt),
+	); err != nil {
 		return nil, err
 	}
 
@@ -78,45 +89,55 @@ func newSrtpCipherAesCmHmacSha1(profile ProtectionProfile, masterKey, masterSalt
 		return nil, err
 	}
 
-	s.srtcpSessionAuth = hmac.New(sha1.New, srtcpSessionAuthTag)
-	s.srtpSessionAuth = hmac.New(sha1.New, srtpSessionAuthTag)
+	srtpCipher.srtcpSessionAuth = hmac.New(sha1.New, srtcpSessionAuthTag)
+	srtpCipher.srtpSessionAuth = hmac.New(sha1.New, srtpSessionAuthTag)
 
 	mkiLen := len(mki)
 	if mkiLen > 0 {
-		s.mki = make([]byte, mkiLen)
-		copy(s.mki, mki)
+		srtpCipher.mki = make([]byte, mkiLen)
+		copy(srtpCipher.mki, mki)
 	}
 
-	return s, nil
+	return srtpCipher, nil
 }
 
-func (s *srtpCipherAesCmHmacSha1) encryptRTP(dst []byte, header *rtp.Header, payload []byte, roc uint32) (ciphertext []byte, err error) {
+func (s *srtpCipherAesCmHmacSha1) encryptRTP(
+	dst []byte,
+	header *rtp.Header,
+	headerLen int,
+	plaintext []byte,
+	roc uint32,
+	rocInAuthTag bool,
+) (ciphertext []byte, err error) {
+	payload := plaintext[headerLen:]
+	payloadLen := len(payload)
+
 	// Grow the given buffer to fit the output.
 	authTagLen, err := s.AuthTagRTPLen()
 	if err != nil {
 		return nil, err
 	}
-	dst = growBufferSize(dst, header.MarshalSize()+len(payload)+len(s.mki)+authTagLen)
+	dst = growBufferSize(dst, headerLen+payloadLen+len(s.mki)+authTagLen)
+	sameBuffer := isSameBuffer(dst, plaintext)
 
 	// Copy the header unencrypted.
-	n, err := header.MarshalTo(dst)
-	if err != nil {
-		return nil, err
+	if !sameBuffer {
+		copy(dst, plaintext[:headerLen])
 	}
 
 	// Encrypt the payload
 	if s.srtpEncrypted {
 		counter := generateCounter(header.SequenceNumber, roc, header.SSRC, s.srtpSessionSalt)
-		if err = xorBytesCTR(s.srtpBlock, counter[:], dst[n:], payload); err != nil {
+		if err = xorBytesCTR(s.srtpBlock, counter[:], dst[headerLen:], payload); err != nil {
 			return nil, err
 		}
-	} else {
-		copy(dst[n:], payload)
+	} else if !sameBuffer {
+		copy(dst[headerLen:], payload)
 	}
-	n += len(payload)
+	n := headerLen + payloadLen
 
 	// Generate the auth tag.
-	authTag, err := s.generateSrtpAuthTag(dst[:n], roc)
+	authTag, err := s.generateSrtpAuthTag(dst[:n], roc, rocInAuthTag)
 	if err != nil {
 		return nil, err
 	}
@@ -133,7 +154,13 @@ func (s *srtpCipherAesCmHmacSha1) encryptRTP(dst []byte, header *rtp.Header, pay
 	return dst, nil
 }
 
-func (s *srtpCipherAesCmHmacSha1) decryptRTP(dst, ciphertext []byte, header *rtp.Header, headerLen int, roc uint32) ([]byte, error) {
+func (s *srtpCipherAesCmHmacSha1) decryptRTP(
+	dst, ciphertext []byte,
+	header *rtp.Header,
+	headerLen int,
+	roc uint32,
+	rocInAuthTag bool,
+) ([]byte, error) {
 	// Split the auth tag and the cipher text into two parts.
 	authTagLen, err := s.AuthTagRTPLen()
 	if err != nil {
@@ -145,7 +172,7 @@ func (s *srtpCipherAesCmHmacSha1) decryptRTP(dst, ciphertext []byte, header *rtp
 	ciphertext = ciphertext[:len(ciphertext)-len(s.mki)-authTagLen]
 
 	// Generate the auth tag we expect to see from the ciphertext.
-	expectedTag, err := s.generateSrtpAuthTag(ciphertext, roc)
+	expectedTag, err := s.generateSrtpAuthTag(ciphertext, roc, rocInAuthTag)
 	if err != nil {
 		return nil, err
 	}
@@ -156,8 +183,12 @@ func (s *srtpCipherAesCmHmacSha1) decryptRTP(dst, ciphertext []byte, header *rtp
 		return nil, ErrFailedToVerifyAuthTag
 	}
 
+	sameBuffer := isSameBuffer(dst, ciphertext)
+
 	// Write the plaintext header to the destination buffer.
-	copy(dst, ciphertext[:headerLen])
+	if !sameBuffer {
+		copy(dst, ciphertext[:headerLen])
+	}
 
 	// Decrypt the ciphertext for the payload.
 	if s.srtpEncrypted {
@@ -168,83 +199,110 @@ func (s *srtpCipherAesCmHmacSha1) decryptRTP(dst, ciphertext []byte, header *rtp
 		if err != nil {
 			return nil, err
 		}
-	} else {
+	} else if !sameBuffer {
 		copy(dst[headerLen:], ciphertext[headerLen:])
 	}
+
 	return dst, nil
 }
 
 func (s *srtpCipherAesCmHmacSha1) encryptRTCP(dst, decrypted []byte, srtcpIndex uint32, ssrc uint32) ([]byte, error) {
-	dst = allocateIfMismatch(dst, decrypted)
+	authTagLen, err := s.AuthTagRTCPLen()
+	if err != nil {
+		return nil, err
+	}
+	mkiLen := len(s.mki)
+	decryptedLen := len(decrypted)
+	encryptedLen := decryptedLen + authTagLen + mkiLen + srtcpIndexSize
+
+	dst = growBufferSize(dst, encryptedLen)
+	sameBuffer := isSameBuffer(dst, decrypted)
+
+	if !sameBuffer {
+		copy(dst, decrypted[:srtcpHeaderSize]) // Copy the first 8 bytes (RTCP header)
+	}
 
 	// Encrypt everything after header
 	if s.srtcpEncrypted {
-		counter := generateCounter(uint16(srtcpIndex&0xffff), srtcpIndex>>16, ssrc, s.srtcpSessionSalt)
-		if err := xorBytesCTR(s.srtcpBlock, counter[:], dst[8:], dst[8:]); err != nil {
+		counter := generateCounter(uint16(srtcpIndex&0xffff), srtcpIndex>>16, ssrc, s.srtcpSessionSalt) //nolint:gosec // G115
+		if err = xorBytesCTR(s.srtcpBlock, counter[:], dst[srtcpHeaderSize:], decrypted[srtcpHeaderSize:]); err != nil {
 			return nil, err
 		}
 
 		// Add SRTCP Index and set Encryption bit
-		dst = append(dst, make([]byte, 4)...)
-		binary.BigEndian.PutUint32(dst[len(dst)-4:], srtcpIndex)
-		dst[len(dst)-4] |= 0x80
+		binary.BigEndian.PutUint32(dst[decryptedLen:], srtcpIndex)
+		dst[decryptedLen] |= srtcpEncryptionFlag
 	} else {
 		// Copy the decrypted payload as is
-		copy(dst[8:], decrypted[8:])
+		if !sameBuffer {
+			copy(dst[srtcpHeaderSize:], decrypted[srtcpHeaderSize:])
+		}
 
 		// Add SRTCP Index with Encryption bit cleared
-		dst = append(dst, make([]byte, 4)...)
-		binary.BigEndian.PutUint32(dst[len(dst)-4:], srtcpIndex)
+		binary.BigEndian.PutUint32(dst[decryptedLen:], srtcpIndex)
 	}
 
+	n := decryptedLen + srtcpIndexSize
+
 	// Generate the authentication tag
-	authTag, err := s.generateSrtcpAuthTag(dst)
+	authTag, err := s.generateSrtcpAuthTag(dst[:n])
 	if err != nil {
 		return nil, err
 	}
 
 	// Include the MKI if provided
 	if len(s.mki) > 0 {
-		dst = append(dst, s.mki...)
+		copy(dst[n:], s.mki)
+		n += mkiLen
 	}
 
 	// Append the auth tag at the end of the buffer
-	return append(dst, authTag...), nil
+	copy(dst[n:], authTag)
+
+	return dst, nil
 }
 
-func (s *srtpCipherAesCmHmacSha1) decryptRTCP(out, encrypted []byte, index, ssrc uint32) ([]byte, error) {
+func (s *srtpCipherAesCmHmacSha1) decryptRTCP(dst, encrypted []byte, index, ssrc uint32) ([]byte, error) {
 	authTagLen, err := s.AuthTagRTCPLen()
 	if err != nil {
 		return nil, err
 	}
-	tailOffset := len(encrypted) - (authTagLen + len(s.mki) + srtcpIndexSize)
-	if tailOffset < 8 {
+	mkiLen := len(s.mki)
+	encryptedLen := len(encrypted)
+	decryptedLen := encryptedLen - (authTagLen + mkiLen + srtcpIndexSize)
+	if decryptedLen < 8 {
 		return nil, errTooShortRTCP
 	}
-	out = out[0:tailOffset]
 
-	expectedTag, err := s.generateSrtcpAuthTag(encrypted[:len(encrypted)-len(s.mki)-authTagLen])
+	expectedTag, err := s.generateSrtcpAuthTag(encrypted[:encryptedLen-mkiLen-authTagLen])
 	if err != nil {
 		return nil, err
 	}
 
-	actualTag := encrypted[len(encrypted)-authTagLen:]
+	actualTag := encrypted[encryptedLen-authTagLen:]
 	if subtle.ConstantTimeCompare(actualTag, expectedTag) != 1 {
 		return nil, ErrFailedToVerifyAuthTag
 	}
 
-	isEncrypted := encrypted[tailOffset]>>7 != 0
-	if isEncrypted {
-		counter := generateCounter(uint16(index&0xffff), index>>16, ssrc, s.srtcpSessionSalt)
-		err = xorBytesCTR(s.srtcpBlock, counter[:], out[8:], out[8:])
-	} else {
-		copy(out[8:], encrypted[8:])
+	dst = growBufferSize(dst, decryptedLen)
+	sameBuffer := isSameBuffer(dst, encrypted)
+
+	if !sameBuffer {
+		copy(dst, encrypted[:srtcpHeaderSize]) // Copy the first 8 bytes (RTCP header)
 	}
 
-	return out, err
+	isEncrypted := encrypted[decryptedLen]&srtcpEncryptionFlag != 0
+	if isEncrypted {
+		counter := generateCounter(uint16(index&0xffff), index>>16, ssrc, s.srtcpSessionSalt) //nolint:gosec // G115
+		err = xorBytesCTR(s.srtcpBlock, counter[:], dst[srtcpHeaderSize:], encrypted[srtcpHeaderSize:decryptedLen])
+	} else if !sameBuffer {
+		copy(dst[srtcpHeaderSize:], encrypted[srtcpHeaderSize:])
+	}
+
+	return dst, err
 }
 
-func (s *srtpCipherAesCmHmacSha1) generateSrtpAuthTag(buf []byte, roc uint32) ([]byte, error) {
+func (s *srtpCipherAesCmHmacSha1) generateSrtpAuthTag(buf []byte, roc uint32, rocInAuthTag bool) ([]byte, error) {
 	// https://tools.ietf.org/html/rfc3711#section-4.2
 	// In the case of SRTP, M SHALL consist of the Authenticated
 	// Portion of the packet (as specified in Figure 1) concatenated with
@@ -279,7 +337,13 @@ func (s *srtpCipherAesCmHmacSha1) generateSrtpAuthTag(buf []byte, roc uint32) ([
 	if err != nil {
 		return nil, err
 	}
-	return s.srtpSessionAuth.Sum(nil)[0:authTagLen], nil
+
+	var authTag []byte
+	if rocInAuthTag {
+		authTag = append(authTag, rocRaw[:]...)
+	}
+
+	return s.srtpSessionAuth.Sum(authTag)[0:authTagLen], nil
 }
 
 func (s *srtpCipherAesCmHmacSha1) generateSrtcpAuthTag(buf []byte) ([]byte, error) {
@@ -311,21 +375,6 @@ func (s *srtpCipherAesCmHmacSha1) getRTCPIndex(in []byte) uint32 {
 	authTagLen, _ := s.AuthTagRTCPLen()
 	tailOffset := len(in) - (authTagLen + srtcpIndexSize + len(s.mki))
 	srtcpIndexBuffer := in[tailOffset : tailOffset+srtcpIndexSize]
+
 	return binary.BigEndian.Uint32(srtcpIndexBuffer) &^ (1 << 31)
 }
-
-func (s *srtpCipherAesCmHmacSha1) getMKI(in []byte, rtp bool) []byte {
-	mkiLen := len(s.mki)
-	if mkiLen == 0 {
-		return nil
-	}
-
-	var authTagLen int
-	if rtp {
-		authTagLen, _ = s.AuthTagRTPLen()
-	} else {
-		authTagLen, _ = s.AuthTagRTCPLen()
-	}
-	tailOffset := len(in) - (authTagLen + mkiLen)
-	return in[tailOffset : tailOffset+mkiLen]
-}

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/stream_srtcp.go

@@ -13,10 +13,10 @@ import (
 	"github.com/pion/transport/v3/packetio"
 )
 
-// Limit the buffer size to 100KB
+// Limit the buffer size to 100KB.
 const srtcpBufferSize = 100 * 1000
 
-// ReadStreamSRTCP handles decryption for a single RTCP SSRC
+// ReadStreamSRTCP handles decryption for a single RTCP SSRC.
 type ReadStreamSRTCP struct {
 	mu sync.Mutex
 
@@ -40,12 +40,12 @@ func (r *ReadStreamSRTCP) write(buf []byte) (n int, err error) {
 	return n, err
 }
 
-// Used by getOrCreateReadStream
+// Used by getOrCreateReadStream.
 func newReadStreamSRTCP() readStream {
 	return &ReadStreamSRTCP{}
 }
 
-// ReadRTCP reads and decrypts full RTCP packet and its header from the nextConn
+// ReadRTCP reads and decrypts full RTCP packet and its header from the nextConn.
 func (r *ReadStreamSRTCP) ReadRTCP(buf []byte) (int, *rtcp.Header, error) {
 	n, err := r.Read(buf)
 	if err != nil {
@@ -61,7 +61,7 @@ func (r *ReadStreamSRTCP) ReadRTCP(buf []byte) (int, *rtcp.Header, error) {
 	return n, header, nil
 }
 
-// Read reads and decrypts full RTCP packet from the nextConn
+// Read reads and decrypts full RTCP packet from the nextConn.
 func (r *ReadStreamSRTCP) Read(buf []byte) (int, error) {
 	return r.buffer.Read(buf)
 }
@@ -74,10 +74,11 @@ func (r *ReadStreamSRTCP) SetReadDeadline(t time.Time) error {
 	}); ok {
 		return b.SetReadDeadline(t)
 	}
+
 	return nil
 }
 
-// Close removes the ReadStream from the session and cleans up any associated state
+// Close removes the ReadStream from the session and cleans up any associated state.
 func (r *ReadStreamSRTCP) Close() error {
 	r.mu.Lock()
 	defer r.mu.Unlock()
@@ -96,6 +97,7 @@ func (r *ReadStreamSRTCP) Close() error {
 		}
 
 		r.session.removeReadStream(r.ssrc)
+
 		return nil
 	}
 }
@@ -128,17 +130,17 @@ func (r *ReadStreamSRTCP) init(child streamSession, ssrc uint32) error {
 	return nil
 }
 
-// GetSSRC returns the SSRC we are demuxing for
+// GetSSRC returns the SSRC we are demuxing for.
 func (r *ReadStreamSRTCP) GetSSRC() uint32 {
 	return r.ssrc
 }
 
-// WriteStreamSRTCP is stream for a single Session that is used to encrypt RTCP
+// WriteStreamSRTCP is stream for a single Session that is used to encrypt RTCP.
 type WriteStreamSRTCP struct {
 	session *SessionSRTCP
 }
 
-// WriteRTCP encrypts a RTCP header and its payload to the nextConn
+// WriteRTCP encrypts a RTCP header and its payload to the nextConn.
 func (w *WriteStreamSRTCP) WriteRTCP(header *rtcp.Header, payload []byte) (int, error) {
 	headerRaw, err := header.Marshal()
 	if err != nil {
@@ -148,7 +150,7 @@ func (w *WriteStreamSRTCP) WriteRTCP(header *rtcp.Header, payload []byte) (int,
 	return w.session.write(append(headerRaw, payload...))
 }
 
-// Write encrypts and writes a full RTCP packets to the nextConn
+// Write encrypts and writes a full RTCP packets to the nextConn.
 func (w *WriteStreamSRTCP) Write(b []byte) (int, error) {
 	return w.session.write(b)
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/stream_srtp.go

@@ -13,10 +13,10 @@ import (
 	"github.com/pion/transport/v3/packetio"
 )
 
-// Limit the buffer size to 1MB
+// Limit the buffer size to 1MB.
 const srtpBufferSize = 1000 * 1000
 
-// ReadStreamSRTP handles decryption for a single RTP SSRC
+// ReadStreamSRTP handles decryption for a single RTP SSRC.
 type ReadStreamSRTP struct {
 	mu sync.Mutex
 
@@ -29,7 +29,7 @@ type ReadStreamSRTP struct {
 	buffer io.ReadWriteCloser
 }
 
-// Used by getOrCreateReadStream
+// Used by getOrCreateReadStream.
 func newReadStreamSRTP() readStream {
 	return &ReadStreamSRTP{}
 }
@@ -74,12 +74,12 @@ func (r *ReadStreamSRTP) write(buf []byte) (n int, err error) {
 	return n, err
 }
 
-// Read reads and decrypts full RTP packet from the nextConn
+// Read reads and decrypts full RTP packet from the nextConn.
 func (r *ReadStreamSRTP) Read(buf []byte) (int, error) {
 	return r.buffer.Read(buf)
 }
 
-// ReadRTP reads and decrypts full RTP packet and its header from the nextConn
+// ReadRTP reads and decrypts full RTP packet and its header from the nextConn.
 func (r *ReadStreamSRTP) ReadRTP(buf []byte) (int, *rtp.Header, error) {
 	n, err := r.Read(buf)
 	if err != nil {
@@ -104,10 +104,11 @@ func (r *ReadStreamSRTP) SetReadDeadline(t time.Time) error {
 	}); ok {
 		return b.SetReadDeadline(t)
 	}
+
 	return nil
 }
 
-// Close removes the ReadStream from the session and cleans up any associated state
+// Close removes the ReadStream from the session and cleans up any associated state.
 func (r *ReadStreamSRTP) Close() error {
 	r.mu.Lock()
 	defer r.mu.Unlock()
@@ -126,26 +127,27 @@ func (r *ReadStreamSRTP) Close() error {
 		}
 
 		r.session.removeReadStream(r.ssrc)
+
 		return nil
 	}
 }
 
-// GetSSRC returns the SSRC we are demuxing for
+// GetSSRC returns the SSRC we are demuxing for.
 func (r *ReadStreamSRTP) GetSSRC() uint32 {
 	return r.ssrc
 }
 
-// WriteStreamSRTP is stream for a single Session that is used to encrypt RTP
+// WriteStreamSRTP is stream for a single Session that is used to encrypt RTP.
 type WriteStreamSRTP struct {
 	session *SessionSRTP
 }
 
-// WriteRTP encrypts a RTP packet and writes to the connection
+// WriteRTP encrypts a RTP packet and writes to the connection.
 func (w *WriteStreamSRTP) WriteRTP(header *rtp.Header, payload []byte) (int, error) {
 	return w.session.writeRTP(header, payload)
 }
 
-// Write encrypts and writes a full RTP packets to the nextConn
+// Write encrypts and writes a full RTP packets to the nextConn.
 func (w *WriteStreamSRTP) Write(b []byte) (int, error) {
 	return w.session.write(b)
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/srtp/v3/util.go

@@ -3,9 +3,11 @@
 
 package srtp
 
-import "bytes"
+import (
+	"unsafe"
+)
 
-// Grow the buffer size to the given number of bytes.
+// growBufferSize grows the buffer size to the given number of bytes.
 func growBufferSize(buf []byte, size int) []byte {
 	if size <= cap(buf) {
 		return buf[:size]
@@ -13,24 +15,25 @@ func growBufferSize(buf []byte, size int) []byte {
 
 	buf2 := make([]byte, size)
 	copy(buf2, buf)
+
 	return buf2
 }
 
-// Check if buffers match, if not allocate a new buffer and return it
-func allocateIfMismatch(dst, src []byte) []byte {
-	if dst == nil {
-		dst = make([]byte, len(src))
-		copy(dst, src)
-	} else if !bytes.Equal(dst, src) { // bytes.Equal returns on ref equality, no optimization needed
-		extraNeeded := len(src) - len(dst)
-		if extraNeeded > 0 {
-			dst = append(dst, make([]byte, extraNeeded)...)
-		} else if extraNeeded < 0 {
-			dst = dst[:len(dst)+extraNeeded]
-		}
-
-		copy(dst, src)
+// isSameBuffer returns true if slices a and b share the same underlying buffer.
+func isSameBuffer(a, b []byte) bool {
+	// If both are nil, they are technically the same (no buffer)
+	if a == nil && b == nil {
+		return true
 	}
 
-	return dst
+	// If either is nil, or both have 0 capacity, they can't share backing buffer
+	if cap(a) == 0 || cap(b) == 0 {
+		return false
+	}
+
+	// Create a slice of length 1 from each if possible
+	aPtr := unsafe.Pointer(&a[:1][0]) // nolint:gosec
+	bPtr := unsafe.Pointer(&b[:1][0]) // nolint:gosec
+
+	return aPtr == bPtr
 }

trunk/3rdparty/srs-bench/vendor/github.com/pion/turn/v4/.golangci.yml

@@ -1,6 +1,9 @@
 # SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
 # SPDX-License-Identifier: MIT
 
+run:
+  timeout: 5m
+
 linters-settings:
   govet:
     enable:
@@ -16,23 +19,42 @@ linters-settings:
             recommendations:
               - errors
   forbidigo:
+    analyze-types: true
     forbid:
       - ^fmt.Print(f|ln)?$
       - ^log.(Panic|Fatal|Print)(f|ln)?$
       - ^os.Exit$
       - ^panic$
       - ^print(ln)?$
+      - p: ^testing.T.(Error|Errorf|Fatal|Fatalf|Fail|FailNow)$
+        pkg: ^testing$
+        msg: "use testify/assert instead"
+  varnamelen:
+    max-distance: 12
+    min-name-length: 2
+    ignore-type-assert-ok: true
+    ignore-map-index-ok: true
+    ignore-chan-recv-ok: true
+    ignore-decls:
+      - i int
+      - n int
+      - w io.Writer
+      - r io.Reader
+      - b []byte
 
 linters:
   enable:
     - asciicheck       # Simple linter to check that your code does not contain non-ASCII identifiers
     - bidichk          # Checks for dangerous unicode character sequences
     - bodyclose        # checks whether HTTP response body is closed successfully
+    - containedctx     # containedctx is a linter that detects struct contained context.Context field
     - contextcheck     # check the function whether use a non-inherited context
+    - cyclop           # checks function and package cyclomatic complexity
     - decorder         # check declaration order and count of types, constants, variables and functions
     - dogsled          # Checks assignments with too many blank identifiers (e.g. x, _, _, _, := f())
     - dupl             # Tool for code clone detection
     - durationcheck    # check for two durations multiplied together
+    - err113           # Golang linter to check the errors handling expressions
     - errcheck         # Errcheck is a program for checking for unchecked errors in go programs. These unchecked errors can be critical bugs in some cases
     - errchkjson       # Checks types passed to the json encoding functions. Reports unsupported types and optionally reports occations, where the check for the returned error can be omitted.
     - errname          # Checks that sentinel errors are prefixed with the `Err` and error types are suffixed with the `Error`.
@@ -43,18 +65,17 @@ linters:
     - forcetypeassert  # finds forced type assertions
     - gci              # Gci control golang package import order and make it always deterministic.
     - gochecknoglobals # Checks that no globals are present in Go code
-    - gochecknoinits   # Checks that no init functions are present in Go code
     - gocognit         # Computes and checks the cognitive complexity of functions
     - goconst          # Finds repeated strings that could be replaced by a constant
     - gocritic         # The most opinionated Go source code linter
+    - gocyclo          # Computes and checks the cyclomatic complexity of functions
+    - godot            # Check if comments end in a period
     - godox            # Tool for detection of FIXME, TODO and other comment keywords
-    - goerr113         # Golang linter to check the errors handling expressions
     - gofmt            # Gofmt checks whether code was gofmt-ed. By default this tool runs with -s option to check for code simplification
     - gofumpt          # Gofumpt checks whether code was gofumpt-ed.
     - goheader         # Checks is file header matches to pattern
     - goimports        # Goimports does everything that gofmt does. Additionally it checks unused imports
     - gomoddirectives  # Manage the use of 'replace', 'retract', and 'excludes' directives in go.mod.
-    - gomodguard       # Allow and block list linter for direct Go module dependencies. This is different from depguard where there are different block types for example version constraints and module recommendations.
     - goprintffuncname # Checks that printf-like functions are named with `f` at the end
     - gosec            # Inspects source code for security problems
     - gosimple         # Linter for Go source code that specializes in simplifying a code
@@ -62,9 +83,15 @@ linters:
     - grouper          # An analyzer to analyze expression groups.
     - importas         # Enforces consistent import aliases
     - ineffassign      # Detects when assignments to existing variables are not used
+    - lll              # Reports long lines
+    - maintidx         # maintidx measures the maintainability index of each function.
+    - makezero         # Finds slice declarations with non-zero initial length
     - misspell         # Finds commonly misspelled English words in comments
+    - nakedret         # Finds naked returns in functions greater than a specified function length
+    - nestif           # Reports deeply nested if statements
     - nilerr           # Finds the code that returns nil even if it checks that the error is not nil.
     - nilnil           # Checks that there is no simultaneous return of `nil` error and an invalid value.
+    - nlreturn         # nlreturn checks for a new line before return and branch statements to increase code clarity
     - noctx            # noctx finds sending http request without context.Context
     - predeclared      # find code that shadows one of Go's predeclared identifiers
     - revive           # golint replacement, finds style mistakes
@@ -72,31 +99,22 @@ linters:
     - stylecheck       # Stylecheck is a replacement for golint
     - tagliatelle      # Checks the struct tags.
     - tenv             # tenv is analyzer that detects using os.Setenv instead of t.Setenv since Go1.17
-    - tparallel        # tparallel detects inappropriate usage of t.Parallel() method in your Go test codes
+    - thelper          # thelper detects golang test helpers without t.Helper() call and checks the consistency of test helpers
     - typecheck        # Like the front-end of a Go compiler, parses and type-checks Go code
     - unconvert        # Remove unnecessary type conversions
     - unparam          # Reports unused function parameters
     - unused           # Checks Go code for unused constants, variables, functions and types
+    - varnamelen       # checks that the length of a variable's name matches its scope
     - wastedassign     # wastedassign finds wasted assignment statements
     - whitespace       # Tool for detection of leading and trailing whitespace
   disable:
     - depguard         # Go linter that checks if package imports are in a list of acceptable packages
-    - containedctx     # containedctx is a linter that detects struct contained context.Context field
-    - cyclop           # checks function and package cyclomatic complexity
-    - exhaustivestruct # Checks if all struct's fields are initialized
     - funlen           # Tool for detection of long functions
-    - gocyclo          # Computes and checks the cyclomatic complexity of functions
-    - godot            # Check if comments end in a period
-    - gomnd            # An analyzer to detect magic numbers.
-    - ifshort          # Checks that your code uses short syntax for if-statements whenever possible
+    - gochecknoinits   # Checks that no init functions are present in Go code
+    - gomodguard       # Allow and block list linter for direct Go module dependencies. This is different from depguard where there are different block types for example version constraints and module recommendations.
+    - interfacebloat   # A linter that checks length of interface.
     - ireturn          # Accept Interfaces, Return Concrete Types
-    - lll              # Reports long lines
-    - maintidx         # maintidx measures the maintainability index of each function.
-    - makezero         # Finds slice declarations with non-zero initial length
-    - maligned         # Tool to detect Go structs that would take less memory if their fields were sorted
-    - nakedret         # Finds naked returns in functions greater than a specified function length
-    - nestif           # Reports deeply nested if statements
-    - nlreturn         # nlreturn checks for a new line before return and branch statements to increase code clarity
+    - mnd              # An analyzer to detect magic numbers
     - nolintlint       # Reports ill-formed or insufficient nolint directives
     - paralleltest     # paralleltest detects missing usage of t.Parallel() method in your Go test
     - prealloc         # Finds slice declarations that could potentially be preallocated
@@ -104,8 +122,7 @@ linters:
     - rowserrcheck     # checks whether Err of rows is checked successfully
     - sqlclosecheck    # Checks that sql.Rows and sql.Stmt are closed.
     - testpackage      # linter that makes you use a separate _test package
-    - thelper          # thelper detects golang test helpers without t.Helper() call and checks the consistency of test helpers
-    - varnamelen       # checks that the length of a variable's name matches its scope
+    - tparallel        # tparallel detects inappropriate usage of t.Parallel() method in your Go test codes
     - wrapcheck        # Checks that errors returned from external packages are wrapped
     - wsl              # Whitespace Linter - Forces you to use empty lines!
 
@@ -114,9 +131,12 @@ issues:
   exclude-dirs-use-default: false
   exclude-rules:
     # Allow complex tests and examples, better to be self contained
-    - path: (examples|main\.go|_test\.go)
+    - path: (examples|main\.go)
       linters:
+        - gocognit
         - forbidigo
+    - path: _test\.go
+      linters:
         - gocognit
 
     # Allow forbidden identifiers in CLI commands

trunk/3rdparty/srs-bench/vendor/github.com/pion/turn/v4/README.md

@@ -7,13 +7,13 @@
 <h4 align="center">A toolkit for building TURN clients and servers in Go</h4>
 <p align="center">
   <a href="https://pion.ly"><img src="https://img.shields.io/badge/pion-turn-gray.svg?longCache=true&colorB=brightgreen" alt="Pion TURN"></a>
-  <a href="http://gophers.slack.com/messages/pion"><img src="https://img.shields.io/badge/join-us%20on%20slack-gray.svg?longCache=true&logo=slack&colorB=brightgreen" alt="Slack Widget"></a>
+  <a href="https://discord.gg/PngbdqpFbt"><img src="https://img.shields.io/badge/join-us%20on%20discord-gray.svg?longCache=true&logo=discord&colorB=brightblue" alt="join us on Discord"></a> <a href="https://bsky.app/profile/pion.ly"><img src="https://img.shields.io/badge/follow-us%20on%20bluesky-gray.svg?longCache=true&logo=bluesky&colorB=brightblue" alt="Follow us on Bluesky"></a>
   <a href="https://github.com/pion/awesome-pion" alt="Awesome Pion"><img src="https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg"></a>
   <br>
   <img alt="GitHub Workflow Status" src="https://img.shields.io/github/actions/workflow/status/pion/turn/test.yaml">
-  <a href="https://pkg.go.dev/github.com/pion/turn/v3"><img src="https://pkg.go.dev/badge/github.com/pion/turn/v3.svg" alt="Go Reference"></a>
+  <a href="https://pkg.go.dev/github.com/pion/turn/v4"><img src="https://pkg.go.dev/badge/github.com/pion/turn/v4.svg" alt="Go Reference"></a>
   <a href="https://codecov.io/gh/pion/turn"><img src="https://codecov.io/gh/pion/turn/branch/master/graph/badge.svg" alt="Coverage Status"></a>
-  <a href="https://goreportcard.com/report/github.com/pion/turn/v3"><img src="https://goreportcard.com/badge/github.com/pion/turn/v3" alt="Go Report Card"></a>
+  <a href="https://goreportcard.com/report/github.com/pion/turn/v4"><img src="https://goreportcard.com/badge/github.com/pion/turn/v4" alt="Go Report Card"></a>
   <a href="LICENSE"><img src="https://img.shields.io/badge/License-MIT-yellow.svg" alt="License: MIT"></a>
 </p>
 <br>
@@ -79,9 +79,9 @@ Yes.
 The library is used as a part of our WebRTC implementation. Please refer to that [roadmap](https://github.com/pion/webrtc/issues/9) to track our major milestones.
 
 ### Community
-Pion has an active community on the [Slack](https://pion.ly/slack).
+Pion has an active community on the [Discord](https://discord.gg/PngbdqpFbt).
 
-Follow the [Pion Twitter](https://twitter.com/_pion) for project updates and important WebRTC news.
+Follow the [Pion Bluesky](https://bsky.app/profile/pion.ly) or [Pion Twitter](https://twitter.com/_pion) for project updates and important WebRTC news.
 
 We are always looking to support **your projects**. Please reach out if you have something to build!
 If you need commercial support or don't want to use public methods you can contact us at [team@pion.ly](mailto:team@pion.ly)

trunk/3rdparty/srs-bench/vendor/github.com/pion/turn/v4/client.go

@@ -49,7 +49,7 @@ type ClientConfig struct {
 	LoggerFactory  logging.LoggerFactory
 }
 
-// Client is a STUN server client
+// Client is a STUN server client.
 type Client struct {
 	conn           net.PacketConn // Read-only
 	net            transport.Net  // Read-only
@@ -72,7 +72,8 @@ type Client struct {
 	log           logging.LeveledLogger  // Read-only
 }
 
-// NewClient returns a new Client instance. listeningAddress is the address and port to listen on, default "0.0.0.0:0"
+// NewClient returns a new Client instance. listeningAddress is the address and port to listen on,
+// default "0.0.0.0:0".
 func NewClient(config *ClientConfig) (*Client, error) {
 	loggerFactory := config.LoggerFactory
 	if loggerFactory == nil {
@@ -119,7 +120,7 @@ func NewClient(config *ClientConfig) (*Client, error) {
 		log.Debugf("Resolved TURN server %s to %s", config.TURNServerAddr, turnServ)
 	}
 
-	c := &Client{
+	client := &Client{
 		conn:           config.Conn,
 		stunServerAddr: stunServ,
 		turnServerAddr: turnServ,
@@ -133,25 +134,25 @@ func NewClient(config *ClientConfig) (*Client, error) {
 		log:            log,
 	}
 
-	return c, nil
+	return client, nil
 }
 
-// TURNServerAddr return the TURN server address
+// TURNServerAddr return the TURN server address.
 func (c *Client) TURNServerAddr() net.Addr {
 	return c.turnServerAddr
 }
 
-// STUNServerAddr return the STUN server address
+// STUNServerAddr return the STUN server address.
 func (c *Client) STUNServerAddr() net.Addr {
 	return c.stunServerAddr
 }
 
-// Username returns username
+// Username returns username.
 func (c *Client) Username() stun.Username {
 	return c.username
 }
 
-// Realm return realm
+// Realm return realm.
 func (c *Client) Realm() stun.Realm {
 	return c.realm
 }
@@ -175,12 +176,14 @@ func (c *Client) Listen() error {
 			n, from, err := c.conn.ReadFrom(buf)
 			if err != nil {
 				c.log.Debugf("Failed to read: %s. Exiting loop", err)
+
 				break
 			}
 
 			_, err = c.HandleInbound(buf[:n], from)
 			if err != nil {
 				c.log.Debugf("Failed to handle inbound message: %s. Exiting loop", err)
+
 				break
 			}
 		}
@@ -191,7 +194,7 @@ func (c *Client) Listen() error {
 	return nil
 }
 
-// Close closes this client
+// Close closes this client.
 func (c *Client) Close() {
 	c.mutexTrMap.Lock()
 	defer c.mutexTrMap.Unlock()
@@ -201,7 +204,7 @@ func (c *Client) Close() {
 
 // TransactionID & Base64: https://play.golang.org/p/EEgmJDI971P
 
-// SendBindingRequestTo sends a new STUN request to the given transport address
+// SendBindingRequestTo sends a new STUN request to the given transport address.
 func (c *Client) SendBindingRequestTo(to net.Addr) (net.Addr, error) {
 	attrs := []stun.Setter{stun.TransactionID, stun.BindingRequest}
 	if len(c.software) > 0 {
@@ -228,15 +231,21 @@ func (c *Client) SendBindingRequestTo(to net.Addr) (net.Addr, error) {
 	}, nil
 }
 
-// SendBindingRequest sends a new STUN request to the STUN server
+// SendBindingRequest sends a new STUN request to the STUN server.
 func (c *Client) SendBindingRequest() (net.Addr, error) {
 	if c.stunServerAddr == nil {
 		return nil, errSTUNServerAddressNotSet
 	}
+
 	return c.SendBindingRequestTo(c.stunServerAddr)
 }
 
-func (c *Client) sendAllocateRequest(protocol proto.Protocol) (proto.RelayedAddress, proto.Lifetime, stun.Nonce, error) {
+func (c *Client) sendAllocateRequest(protocol proto.Protocol) ( //nolint:cyclop
+	proto.RelayedAddress,
+	proto.Lifetime,
+	stun.Nonce,
+	error,
+) {
 	var relayed proto.RelayedAddress
 	var lifetime proto.Lifetime
 	var nonce stun.Nonce
@@ -295,6 +304,7 @@ func (c *Client) sendAllocateRequest(protocol proto.Protocol) (proto.RelayedAddr
 		if err = code.GetFrom(res); err == nil {
 			return relayed, lifetime, nonce, fmt.Errorf("%s (error %s)", res.Type, code) //nolint:goerr113
 		}
+
 		return relayed, lifetime, nonce, fmt.Errorf("%s", res.Type) //nolint:goerr113
 	}
 
@@ -307,10 +317,11 @@ func (c *Client) sendAllocateRequest(protocol proto.Protocol) (proto.RelayedAddr
 	if err := lifetime.GetFrom(res); err != nil {
 		return relayed, lifetime, nonce, err
 	}
+
 	return relayed, lifetime, nonce, nil
 }
 
-// Allocate sends a TURN allocation request to the given transport address
+// Allocate sends a TURN allocation request to the given transport address.
 func (c *Client) Allocate() (net.PacketConn, error) {
 	if err := c.allocTryLock.Lock(); err != nil {
 		return nil, fmt.Errorf("%w: %s", errOneAllocateOnly, err.Error())
@@ -403,10 +414,11 @@ func (c *Client) CreatePermission(addrs ...net.Addr) error {
 			return err
 		}
 	}
+
 	return nil
 }
 
-// PerformTransaction performs STUN transaction
+// PerformTransaction performs STUN transaction.
 func (c *Client) PerformTransaction(msg *stun.Message, to net.Addr, ignoreResult bool) (client.TransactionResult,
 	error,
 ) {
@@ -442,11 +454,12 @@ func (c *Client) PerformTransaction(msg *stun.Message, to net.Addr, ignoreResult
 	if res.Err != nil {
 		return res, res.Err
 	}
+
 	return res, nil
 }
 
 // OnDeallocated is called when de-allocation of relay address has been complete.
-// (Called by UDPConn)
+// (Called by UDPConn).
 func (c *Client) OnDeallocated(net.Addr) {
 	c.setRelayedUDPConn(nil)
 	c.setTCPAllocation(nil)
@@ -494,7 +507,7 @@ func (c *Client) HandleInbound(data []byte, from net.Addr) (bool, error) {
 	return false, nil
 }
 
-func (c *Client) handleSTUNMessage(data []byte, from net.Addr) error {
+func (c *Client) handleSTUNMessage(data []byte, from net.Addr) error { //nolint:cyclop
 	raw := make([]byte, len(data))
 	copy(raw, data)
 
@@ -507,7 +520,7 @@ func (c *Client) handleSTUNMessage(data []byte, from net.Addr) error {
 		return fmt.Errorf("%w : %s", errUnexpectedSTUNRequestMessage, msg.String())
 	}
 
-	if msg.Type.Class == stun.ClassIndication {
+	if msg.Type.Class == stun.ClassIndication { // nolint:nestif
 		switch msg.Type.Method {
 		case stun.MethodData:
 			var peerAddr proto.PeerAddress
@@ -529,6 +542,7 @@ func (c *Client) handleSTUNMessage(data []byte, from net.Addr) error {
 			relayedConn := c.relayedUDPConn()
 			if relayedConn == nil {
 				c.log.Debug("No relayed conn allocated")
+
 				return nil // Silently discard
 			}
 			relayedConn.HandleInbound(data, from)
@@ -553,6 +567,7 @@ func (c *Client) handleSTUNMessage(data []byte, from net.Addr) error {
 			allocation := c.getTCPAllocation()
 			if allocation == nil {
 				c.log.Debug("No TCP allocation exists")
+
 				return nil // Silently discard
 			}
 
@@ -560,6 +575,7 @@ func (c *Client) handleSTUNMessage(data []byte, from net.Addr) error {
 		default:
 			c.log.Debug("Received unsupported STUN method")
 		}
+
 		return nil
 	}
 
@@ -576,6 +592,7 @@ func (c *Client) handleSTUNMessage(data []byte, from net.Addr) error {
 		c.mutexTrMap.Unlock()
 		// Silently discard
 		c.log.Debugf("No transaction for %s", msg)
+
 		return nil
 	}
 
@@ -607,6 +624,7 @@ func (c *Client) handleChannelData(data []byte) error {
 	relayedConn := c.relayedUDPConn()
 	if relayedConn == nil {
 		c.log.Debug("No relayed conn allocated")
+
 		return nil // Silently discard
 	}
 
@@ -618,6 +636,7 @@ func (c *Client) handleChannelData(data []byte) error {
 	c.log.Tracef("Channel data received from %s (ch=%d)", addr.String(), int(chData.Number))
 
 	relayedConn.HandleInbound(chData.Data, addr)
+
 	return nil
 }
 
@@ -638,11 +657,12 @@ func (c *Client) onRtxTimeout(trKey string, nRtx int) {
 		}) {
 			c.log.Debug("No listener for transaction")
 		}
+
 		return
 	}
 
 	c.log.Tracef("Retransmitting transaction %s to %s (nRtx=%d)",
-		trKey, tr.To.String(), nRtx)
+		trKey, tr.To, nRtx)
 	_, err := c.conn.WriteTo(tr.Raw, tr.To)
 	if err != nil {
 		c.trMap.Delete(trKey)
@@ -651,6 +671,7 @@ func (c *Client) onRtxTimeout(trKey string, nRtx int) {
 		}) {
 			c.log.Debug("No listener for transaction")
 		}
+
 		return
 	}
 	tr.StartRtxTimer(c.onRtxTimeout)

trunk/3rdparty/srs-bench/vendor/github.com/pion/turn/v4/internal/allocation/allocation.go

@@ -22,7 +22,7 @@ type allocationResponse struct {
 }
 
 // Allocation is tied to a FiveTuple and relays traffic
-// use CreateAllocation and GetAllocation to operate
+// use CreateAllocation and GetAllocation to operate.
 type Allocation struct {
 	RelayAddr           net.Addr
 	Protocol            Protocol
@@ -55,7 +55,7 @@ func NewAllocation(turnSocket net.PacketConn, fiveTuple *FiveTuple, log logging.
 	}
 }
 
-// GetPermission gets the Permission from the allocation
+// GetPermission gets the Permission from the allocation.
 func (a *Allocation) GetPermission(addr net.Addr) *Permission {
 	a.permissionsLock.RLock()
 	defer a.permissionsLock.RUnlock()
@@ -63,9 +63,9 @@ func (a *Allocation) GetPermission(addr net.Addr) *Permission {
 	return a.permissions[ipnet.FingerprintAddr(addr)]
 }
 
-// AddPermission adds a new permission to the allocation
-func (a *Allocation) AddPermission(p *Permission) {
-	fingerprint := ipnet.FingerprintAddr(p.Addr)
+// AddPermission adds a new permission to the allocation.
+func (a *Allocation) AddPermission(perms *Permission) {
+	fingerprint := ipnet.FingerprintAddr(perms.Addr)
 
 	a.permissionsLock.RLock()
 	existedPermission, ok := a.permissions[fingerprint]
@@ -73,18 +73,19 @@ func (a *Allocation) AddPermission(p *Permission) {
 
 	if ok {
 		existedPermission.refresh(permissionTimeout)
+
 		return
 	}
 
-	p.allocation = a
+	perms.allocation = a
 	a.permissionsLock.Lock()
-	a.permissions[fingerprint] = p
+	a.permissions[fingerprint] = perms
 	a.permissionsLock.Unlock()
 
-	p.start(permissionTimeout)
+	perms.start(permissionTimeout)
 }
 
-// RemovePermission removes the net.Addr's fingerprint from the allocation's permissions
+// RemovePermission removes the net.Addr's fingerprint from the allocation's permissions.
 func (a *Allocation) RemovePermission(addr net.Addr) {
 	a.permissionsLock.Lock()
 	defer a.permissionsLock.Unlock()
@@ -92,13 +93,13 @@ func (a *Allocation) RemovePermission(addr net.Addr) {
 }
 
 // AddChannelBind adds a new ChannelBind to the allocation, it also updates the
-// permissions needed for this ChannelBind
-func (a *Allocation) AddChannelBind(c *ChannelBind, lifetime time.Duration) error {
+// permissions needed for this ChannelBind.
+func (a *Allocation) AddChannelBind(chanBind *ChannelBind, lifetime time.Duration) error {
 	// Check that this channel id isn't bound to another transport address, and
 	// that this transport address isn't bound to another channel number.
-	channelByNumber := a.GetChannelByNumber(c.Number)
+	channelByNumber := a.GetChannelByNumber(chanBind.Number)
 
-	if channelByNumber != a.GetChannelByAddr(c.Peer) {
+	if channelByNumber != a.GetChannelByAddr(chanBind.Peer) {
 		return errSameChannelDifferentPeer
 	}
 
@@ -107,12 +108,12 @@ func (a *Allocation) AddChannelBind(c *ChannelBind, lifetime time.Duration) erro
 		a.channelBindingsLock.Lock()
 		defer a.channelBindingsLock.Unlock()
 
-		c.allocation = a
-		a.channelBindings = append(a.channelBindings, c)
-		c.start(lifetime)
+		chanBind.allocation = a
+		a.channelBindings = append(a.channelBindings, chanBind)
+		chanBind.start(lifetime)
 
 		// Channel binds also refresh permissions.
-		a.AddPermission(NewPermission(c.Peer, a.log))
+		a.AddPermission(NewPermission(chanBind.Peer, a.log))
 	} else {
 		channelByNumber.refresh(lifetime)
 
@@ -123,7 +124,7 @@ func (a *Allocation) AddChannelBind(c *ChannelBind, lifetime time.Duration) erro
 	return nil
 }
 
-// RemoveChannelBind removes the ChannelBind from this allocation by id
+// RemoveChannelBind removes the ChannelBind from this allocation by id.
 func (a *Allocation) RemoveChannelBind(number proto.ChannelNumber) bool {
 	a.channelBindingsLock.Lock()
 	defer a.channelBindingsLock.Unlock()
@@ -131,6 +132,7 @@ func (a *Allocation) RemoveChannelBind(number proto.ChannelNumber) bool {
 	for i := len(a.channelBindings) - 1; i >= 0; i-- {
 		if a.channelBindings[i].Number == number {
 			a.channelBindings = append(a.channelBindings[:i], a.channelBindings[i+1:]...)
+
 			return true
 		}
 	}
@@ -138,7 +140,7 @@ func (a *Allocation) RemoveChannelBind(number proto.ChannelNumber) bool {
 	return false
 }
 
-// GetChannelByNumber gets the ChannelBind from this allocation by id
+// GetChannelByNumber gets the ChannelBind from this allocation by id.
 func (a *Allocation) GetChannelByNumber(number proto.ChannelNumber) *ChannelBind {
 	a.channelBindingsLock.RLock()
 	defer a.channelBindingsLock.RUnlock()
@@ -147,10 +149,11 @@ func (a *Allocation) GetChannelByNumber(number proto.ChannelNumber) *ChannelBind
 			return cb
 		}
 	}
+
 	return nil
 }
 
-// GetChannelByAddr gets the ChannelBind from this allocation by net.Addr
+// GetChannelByAddr gets the ChannelBind from this allocation by net.Addr.
 func (a *Allocation) GetChannelByAddr(addr net.Addr) *ChannelBind {
 	a.channelBindingsLock.RLock()
 	defer a.channelBindingsLock.RUnlock()
@@ -159,17 +162,18 @@ func (a *Allocation) GetChannelByAddr(addr net.Addr) *ChannelBind {
 			return cb
 		}
 	}
+
 	return nil
 }
 
-// Refresh updates the allocations lifetime
+// Refresh updates the allocations lifetime.
 func (a *Allocation) Refresh(lifetime time.Duration) {
 	if !a.lifetimeTimer.Reset(lifetime) {
 		a.log.Errorf("Failed to reset allocation timer for %v", a.fiveTuple)
 	}
 }
 
-// SetResponseCache cache allocation response for retransmit allocation request
+// SetResponseCache cache allocation response for retransmit allocation request.
 func (a *Allocation) SetResponseCache(transactionID [stun.TransactionIDSize]byte, attrs []stun.Setter) {
 	a.responseCache.Store(&allocationResponse{
 		transactionID: transactionID,
@@ -177,15 +181,16 @@ func (a *Allocation) SetResponseCache(transactionID [stun.TransactionIDSize]byte
 	})
 }
 
-// GetResponseCache return response cache for retransmit allocation request
+// GetResponseCache return response cache for retransmit allocation request.
 func (a *Allocation) GetResponseCache() (id [stun.TransactionIDSize]byte, attrs []stun.Setter) {
 	if res, ok := a.responseCache.Load().(*allocationResponse); ok && res != nil {
 		id, attrs = res.transactionID, res.responseAttrs
 	}
+
 	return
 }
 
-// Close closes the allocation
+// Close closes the allocation.
 func (a *Allocation) Close() error {
 	select {
 	case <-a.closed:
@@ -233,13 +238,14 @@ func (a *Allocation) Close() error {
 
 const rtpMTU = 1600
 
-func (a *Allocation) packetHandler(m *Manager) {
+func (a *Allocation) packetHandler(manager *Manager) {
 	buffer := make([]byte, rtpMTU)
 
 	for {
 		n, srcAddr, err := a.RelaySocket.ReadFrom(buffer)
 		if err != nil {
-			m.DeleteAllocation(a.fiveTuple)
+			manager.DeleteAllocation(a.fiveTuple)
+
 			return
 		}
 
@@ -248,7 +254,7 @@ func (a *Allocation) packetHandler(m *Manager) {
 			n,
 			srcAddr)
 
-		if channel := a.GetChannelByAddr(srcAddr); channel != nil {
+		if channel := a.GetChannelByAddr(srcAddr); channel != nil { // nolint:nestif
 			channelData := &proto.ChannelData{
 				Data:   buffer[:n],
 				Number: channel.Number,
@@ -262,15 +268,22 @@ func (a *Allocation) packetHandler(m *Manager) {
 			udpAddr, ok := srcAddr.(*net.UDPAddr)
 			if !ok {
 				a.log.Errorf("Failed to send DataIndication from allocation %v %v", srcAddr, err)
+
 				return
 			}
 
 			peerAddressAttr := proto.PeerAddress{IP: udpAddr.IP, Port: udpAddr.Port}
 			dataAttr := proto.Data(buffer[:n])
 
-			msg, err := stun.Build(stun.TransactionID, stun.NewType(stun.MethodData, stun.ClassIndication), peerAddressAttr, dataAttr)
+			msg, err := stun.Build(
+				stun.TransactionID,
+				stun.NewType(stun.MethodData, stun.ClassIndication),
+				peerAddressAttr,
+				dataAttr,
+			)
 			if err != nil {
 				a.log.Errorf("Failed to send DataIndication from allocation %v %v", srcAddr, err)
+
 				return
 			}
 			a.log.Debugf("Relaying message from %s to client at %s",

trunk/3rdparty/srs-bench/vendor/github.com/pion/turn/v4/internal/allocation/allocation_manager.go

@@ -25,7 +25,7 @@ type reservation struct {
 	port  int
 }
 
-// Manager is used to hold active allocations
+// Manager is used to hold active allocations.
 type Manager struct {
 	lock sync.RWMutex
 	log  logging.LeveledLogger
@@ -58,21 +58,23 @@ func NewManager(config ManagerConfig) (*Manager, error) {
 	}, nil
 }
 
-// GetAllocation fetches the allocation matching the passed FiveTuple
+// GetAllocation fetches the allocation matching the passed FiveTuple.
 func (m *Manager) GetAllocation(fiveTuple *FiveTuple) *Allocation {
 	m.lock.RLock()
 	defer m.lock.RUnlock()
+
 	return m.allocations[fiveTuple.Fingerprint()]
 }
 
-// AllocationCount returns the number of existing allocations
+// AllocationCount returns the number of existing allocations.
 func (m *Manager) AllocationCount() int {
 	m.lock.RLock()
 	defer m.lock.RUnlock()
+
 	return len(m.allocations)
 }
 
-// Close closes the manager and closes all allocations it manages
+// Close closes the manager and closes all allocations it manages.
 func (m *Manager) Close() error {
 	m.lock.Lock()
 	defer m.lock.Unlock()
@@ -82,11 +84,17 @@ func (m *Manager) Close() error {
 			return err
 		}
 	}
+
 	return nil
 }
 
-// CreateAllocation creates a new allocation and starts relaying
-func (m *Manager) CreateAllocation(fiveTuple *FiveTuple, turnSocket net.PacketConn, requestedPort int, lifetime time.Duration) (*Allocation, error) {
+// CreateAllocation creates a new allocation and starts relaying.
+func (m *Manager) CreateAllocation(
+	fiveTuple *FiveTuple,
+	turnSocket net.PacketConn,
+	requestedPort int,
+	lifetime time.Duration,
+) (*Allocation, error) {
 	switch {
 	case fiveTuple == nil:
 		return nil, errNilFiveTuple
@@ -100,34 +108,35 @@ func (m *Manager) CreateAllocation(fiveTuple *FiveTuple, turnSocket net.PacketCo
 		return nil, errLifetimeZero
 	}
 
-	if a := m.GetAllocation(fiveTuple); a != nil {
+	if alloc := m.GetAllocation(fiveTuple); alloc != nil {
 		return nil, fmt.Errorf("%w: %v", errDupeFiveTuple, fiveTuple)
 	}
-	a := NewAllocation(turnSocket, fiveTuple, m.log)
+	alloc := NewAllocation(turnSocket, fiveTuple, m.log)
 
 	conn, relayAddr, err := m.allocatePacketConn("udp4", requestedPort)
 	if err != nil {
 		return nil, err
 	}
 
-	a.RelaySocket = conn
-	a.RelayAddr = relayAddr
+	alloc.RelaySocket = conn
+	alloc.RelayAddr = relayAddr
 
-	m.log.Debugf("Listening on relay address: %s", a.RelayAddr)
+	m.log.Debugf("Listening on relay address: %s", alloc.RelayAddr)
 
-	a.lifetimeTimer = time.AfterFunc(lifetime, func() {
-		m.DeleteAllocation(a.fiveTuple)
+	alloc.lifetimeTimer = time.AfterFunc(lifetime, func() {
+		m.DeleteAllocation(alloc.fiveTuple)
 	})
 
 	m.lock.Lock()
-	m.allocations[fiveTuple.Fingerprint()] = a
+	m.allocations[fiveTuple.Fingerprint()] = alloc
 	m.lock.Unlock()
 
-	go a.packetHandler(m)
-	return a, nil
+	go alloc.packetHandler(m)
+
+	return alloc, nil
 }
 
-// DeleteAllocation removes an allocation
+// DeleteAllocation removes an allocation.
 func (m *Manager) DeleteAllocation(fiveTuple *FiveTuple) {
 	fingerprint := fiveTuple.Fingerprint()
 
@@ -145,7 +154,7 @@ func (m *Manager) DeleteAllocation(fiveTuple *FiveTuple) {
 	}
 }
 
-// CreateReservation stores the reservation for the token+port
+// CreateReservation stores the reservation for the token+port.
 func (m *Manager) CreateReservation(reservationToken string, port int) {
 	time.AfterFunc(30*time.Second, func() {
 		m.lock.Lock()
@@ -153,6 +162,7 @@ func (m *Manager) CreateReservation(reservationToken string, port int) {
 		for i := len(m.reservations) - 1; i >= 0; i-- {
 			if m.reservations[i].token == reservationToken {
 				m.reservations = append(m.reservations[:i], m.reservations[i+1:]...)
+
 				return
 			}
 		}
@@ -166,7 +176,7 @@ func (m *Manager) CreateReservation(reservationToken string, port int) {
 	m.lock.Unlock()
 }
 
-// GetReservation returns the port for a given reservation if it exists
+// GetReservation returns the port for a given reservation if it exists.
 func (m *Manager) GetReservation(reservationToken string) (int, bool) {
 	m.lock.RLock()
 	defer m.lock.RUnlock()
@@ -176,10 +186,11 @@ func (m *Manager) GetReservation(reservationToken string) (int, bool) {
 			return r.port, true
 		}
 	}
+
 	return 0, false
 }
 
-// GetRandomEvenPort returns a random un-allocated udp4 port
+// GetRandomEvenPort returns a random un-allocated udp4 port.
 func (m *Manager) GetRandomEvenPort() (int, error) {
 	for i := 0; i < 128; i++ {
 		conn, addr, err := m.allocatePacketConn("udp4", 0)
@@ -199,11 +210,12 @@ func (m *Manager) GetRandomEvenPort() (int, error) {
 			return udpAddr.Port, nil
 		}
 	}
+
 	return 0, errFailedToAllocateEvenPort
 }
 
 // GrantPermission handles permission requests by calling the permission handler callback
-// associated with the TURN server listener socket
+// associated with the TURN server listener socket.
 func (m *Manager) GrantPermission(sourceAddr net.Addr, peerIP net.IP) error {
 	// No permission handler: open
 	if m.permissionHandler == nil {

trunk/3rdparty/srs-bench/vendor/github.com/pion/turn/v4/internal/allocation/channel_bind.go

@@ -22,7 +22,7 @@ type ChannelBind struct {
 	log           logging.LeveledLogger
 }
 
-// NewChannelBind creates a new ChannelBind
+// NewChannelBind creates a new ChannelBind.
 func NewChannelBind(number proto.ChannelNumber, peer net.Addr, log logging.LeveledLogger) *ChannelBind {
 	return &ChannelBind{
 		Number: number,

trunk/3rdparty/srs-bench/vendor/github.com/pion/turn/v4/internal/allocation/five_tuple.go

@@ -7,10 +7,10 @@ import (
 	"net"
 )
 
-// Protocol is an enum for relay protocol
+// Protocol is an enum for relay protocol.
 type Protocol uint8
 
-// Network protocols for relay
+// Network protocols for relay.
 const (
 	UDP Protocol = iota
 	TCP
@@ -27,19 +27,19 @@ type FiveTuple struct {
 	SrcAddr, DstAddr net.Addr
 }
 
-// Equal asserts if two FiveTuples are equal
+// Equal asserts if two FiveTuples are equal.
 func (f *FiveTuple) Equal(b *FiveTuple) bool {
 	return f.Fingerprint() == b.Fingerprint()
 }
 
-// FiveTupleFingerprint is a comparable representation of a FiveTuple
+// FiveTupleFingerprint is a comparable representation of a FiveTuple.
 type FiveTupleFingerprint struct {
 	srcIP, dstIP     [16]byte
 	srcPort, dstPort uint16
 	protocol         Protocol
 }
 
-// Fingerprint is the identity of a FiveTuple
+// Fingerprint is the identity of a FiveTuple.
 func (f *FiveTuple) Fingerprint() (fp FiveTupleFingerprint) {
 	srcIP, srcPort := netAddrIPAndPort(f.SrcAddr)
 	copy(fp.srcIP[:], srcIP)
@@ -48,15 +48,16 @@ func (f *FiveTuple) Fingerprint() (fp FiveTupleFingerprint) {
 	copy(fp.dstIP[:], dstIP)
 	fp.dstPort = dstPort
 	fp.protocol = f.Protocol
+
 	return
 }
 
 func netAddrIPAndPort(addr net.Addr) (net.IP, uint16) {
 	switch a := addr.(type) {
 	case *net.UDPAddr:
-		return a.IP.To16(), uint16(a.Port)
+		return a.IP.To16(), uint16(a.Port) // nolint:gosec // G115
 	case *net.TCPAddr:
-		return a.IP.To16(), uint16(a.Port)
+		return a.IP.To16(), uint16(a.Port) // nolint:gosec // G115
 	default:
 		return nil, 0
 	}

trunk/3rdparty/srs-bench/vendor/github.com/pion/turn/v4/internal/allocation/permission.go

@@ -22,7 +22,7 @@ type Permission struct {
 	log           logging.LeveledLogger
 }
 
-// NewPermission create a new Permission
+// NewPermission create a new Permission.
 func NewPermission(addr net.Addr, log logging.LeveledLogger) *Permission {
 	return &Permission{
 		Addr: addr,

trunk/3rdparty/srs-bench/vendor/github.com/pion/turn/v4/internal/client/allocation.go

@@ -16,7 +16,7 @@ import (
 	"github.com/pion/turn/v4/internal/proto"
 )
 
-// AllocationConfig is a set of configuration params use by NewUDPConn and NewTCPAllocation
+// AllocationConfig is a set of configuration params use by NewUDPConn and NewTCPAllocation.
 type AllocationConfig struct {
 	Client      Client
 	RelayedAddr net.Addr
@@ -82,6 +82,7 @@ func (a *allocation) refreshAllocation(lifetime time.Duration, dontWait bool) er
 
 	if dontWait {
 		a.log.Debug("Refresh request sent")
+
 		return nil
 	}
 
@@ -93,10 +94,13 @@ func (a *allocation) refreshAllocation(lifetime time.Duration, dontWait bool) er
 		if err = code.GetFrom(res); err == nil {
 			if code.Code == stun.CodeStaleNonce {
 				a.setNonceFromMsg(res)
+
 				return errTryAgain
 			}
+
 			return err
 		}
+
 		return fmt.Errorf("%s", res.Type) //nolint:goerr113
 	}
 
@@ -108,6 +112,7 @@ func (a *allocation) refreshAllocation(lifetime time.Duration, dontWait bool) er
 
 	a.setLifetime(updatedLifetime.Duration)
 	a.log.Debugf("Updated lifetime: %d seconds", int(a.lifetime().Seconds()))
+
 	return nil
 }
 
@@ -115,6 +120,7 @@ func (a *allocation) refreshPermissions() error {
 	addrs := a.permMap.addrs()
 	if len(addrs) == 0 {
 		a.log.Debug("No permission to refresh")
+
 		return nil
 	}
 	if err := a.CreatePermissions(addrs...); err != nil {
@@ -122,9 +128,11 @@ func (a *allocation) refreshPermissions() error {
 			return errTryAgain
 		}
 		a.log.Errorf("Fail to refresh permissions: %s", err)
+
 		return err
 	}
 	a.log.Debug("Refresh permissions successful")
+
 	return nil
 }
 

trunk/3rdparty/srs-bench/vendor/github.com/pion/turn/v4/internal/client/binding.go

@@ -61,7 +61,7 @@ func (b *binding) refreshedAt() time.Time {
 	return b._refreshedAt
 }
 
-// Thread-safe binding map
+// Thread-safe binding map.
 type bindingManager struct {
 	chanMap map[uint16]*binding
 	addrMap map[string]*binding
@@ -84,6 +84,7 @@ func (mgr *bindingManager) assignChannelNumber() uint16 {
 	} else {
 		mgr.next++
 	}
+
 	return n
 }
 
@@ -100,6 +101,7 @@ func (mgr *bindingManager) create(addr net.Addr) *binding {
 
 	mgr.chanMap[b.number] = b
 	mgr.addrMap[b.addr.String()] = b
+
 	return b
 }
 
@@ -108,6 +110,7 @@ func (mgr *bindingManager) findByAddr(addr net.Addr) (*binding, bool) {
 	defer mgr.mutex.RUnlock()
 
 	b, ok := mgr.addrMap[addr.String()]
+
 	return b, ok
 }
 
@@ -116,6 +119,7 @@ func (mgr *bindingManager) findByNumber(number uint16) (*binding, bool) {
 	defer mgr.mutex.RUnlock()
 
 	b, ok := mgr.chanMap[number]
+
 	return b, ok
 }
 
@@ -130,6 +134,7 @@ func (mgr *bindingManager) deleteByAddr(addr net.Addr) bool {
 
 	delete(mgr.addrMap, addr.String())
 	delete(mgr.chanMap, b.number)
+
 	return true
 }
 
@@ -144,6 +149,7 @@ func (mgr *bindingManager) deleteByNumber(number uint16) bool {
 
 	delete(mgr.addrMap, b.addr.String())
 	delete(mgr.chanMap, number)
+
 	return true
 }
 

trunk/3rdparty/srs-bench/vendor/github.com/pion/turn/v4/internal/client/client.go

@@ -10,7 +10,7 @@ import (
 	"github.com/pion/stun/v3"
 )
 
-// Client is an interface for the public turn.Client in order to break cyclic dependencies
+// Client is an interface for the public turn.Client in order to break cyclic dependencies.
 type Client interface {
 	WriteTo(data []byte, to net.Addr) (int, error)
 	PerformTransaction(msg *stun.Message, to net.Addr, dontWait bool) (TransactionResult, error)

trunk/3rdparty/srs-bench/vendor/github.com/pion/turn/v4/internal/client/periodic_timer.go

@@ -8,10 +8,10 @@ import (
 	"time"
 )
 
-// PeriodicTimerTimeoutHandler is a handler called on timeout
+// PeriodicTimerTimeoutHandler is a handler called on timeout.
 type PeriodicTimerTimeoutHandler func(timerID int)
 
-// PeriodicTimer is a periodic timer
+// PeriodicTimer is a periodic timer.
 type PeriodicTimer struct {
 	id             int
 	interval       time.Duration
@@ -20,7 +20,7 @@ type PeriodicTimer struct {
 	mutex          sync.RWMutex
 }
 
-// NewPeriodicTimer create a new timer
+// NewPeriodicTimer create a new timer.
 func NewPeriodicTimer(id int, timeoutHandler PeriodicTimerTimeoutHandler, interval time.Duration) *PeriodicTimer {
 	return &PeriodicTimer{
 		id:             id,
@@ -76,7 +76,7 @@ func (t *PeriodicTimer) Stop() {
 }
 
 // IsRunning tests if the timer is running.
-// Debug purpose only
+// Debug purpose only.
 func (t *PeriodicTimer) IsRunning() bool {
 	t.mutex.RLock()
 	defer t.mutex.RUnlock()

trunk/3rdparty/srs-bench/vendor/github.com/pion/turn/v4/internal/client/permission.go

@@ -32,7 +32,7 @@ func (p *permission) state() permState {
 	return permState(atomic.LoadInt32((*int32)(&p.st)))
 }
 
-// Thread-safe permission map
+// Thread-safe permission map.
 type permissionMap struct {
 	permMap map[string]*permission
 	mutex   sync.RWMutex
@@ -43,6 +43,7 @@ func (m *permissionMap) insert(addr net.Addr, p *permission) bool {
 	defer m.mutex.Unlock()
 	p.addr = addr
 	m.permMap[ipnet.FingerprintAddr(addr)] = p
+
 	return true
 }
 
@@ -50,6 +51,7 @@ func (m *permissionMap) find(addr net.Addr) (*permission, bool) {
 	m.mutex.RLock()
 	defer m.mutex.RUnlock()
 	p, ok := m.permMap[ipnet.FingerprintAddr(addr)]
+
 	return p, ok
 }
 
@@ -67,6 +69,7 @@ func (m *permissionMap) addrs() []net.Addr {
 	for _, p := range m.permMap {
 		addrs = append(addrs, p.addr)
 	}
+
 	return addrs
 }