support muxing and reading VP9 tracks

README.md

@@ -20,6 +20,7 @@ Client features:
 |Read fMP4 streams|OK|
 |Read Low-latency streams|TODO|
 |Read AV1 tracks|OK|
+|Read VP9 tracks|OK|
 |Read H265 tracks|OK|
 |Read H264 tracks|OK|
 |Read Opus tracks|OK|
@@ -33,6 +34,7 @@ Muxer features:
 |Generate fMP4 streams|OK|
 |Generate Low-latency streams|OK|
 |Write AV1 tracks|OK|
+|Write VP9 tracks|OK|
 |Write H265 tracks|OK|
 |Write H264 tracks|OK|
 |Write Opus tracks|OK|

client.go

@@ -39,6 +39,9 @@
 // ClientOnDataAV1Func is the prototype of the function passed to OnDataAV1().
 type ClientOnDataAV1Func func(pts time.Duration, obus [][]byte)
 
+// ClientOnDataVP9Func is the prototype of the function passed to OnDataVP9().
+type ClientOnDataVP9Func func(pts time.Duration, frame []byte)
+
 // ClientOnDataH26xFunc is the prototype of the function passed to OnDataH26x().
 type ClientOnDataH26xFunc func(pts time.Duration, dts time.Duration, au [][]byte)
 
@@ -147,6 +150,11 @@
 	c.onData[forma] = cb
 }
 
+// OnDataVP9 sets a callback that is called when data from a VP9 track is received.
+func (c *Client) OnDataVP9(forma *Track, cb ClientOnDataVP9Func) {
+	c.onData[forma] = cb
+}
+
 // OnDataH26x sets a callback that is called when data from an H26x track is received.
 func (c *Client) OnDataH26x(forma *Track, cb ClientOnDataH26xFunc) {
 	c.onData[forma] = cb

client_processor_fmp4.go

@@ -13,8 +13,7 @@
 func fmp4PickLeadingTrack(init *fmp4.Init) int {
 	// pick first video track
 	for _, track := range init.Tracks {
-		switch track.Codec.(type) {
-		case *fmp4.CodecAV1, *fmp4.CodecH264, *fmp4.CodecH265:
+		if track.Codec.IsVideo() {
 			return track.ID
 		}
 	}
@@ -211,6 +210,17 @@
 				return nil
 			}
 
+		case *codecs.VP9:
+			var onDataCasted ClientOnDataVP9Func = func(pts time.Duration, frame []byte) {}
+			if onData != nil {
+				onDataCasted = onData.(ClientOnDataVP9Func)
+			}
+
+			postProcess = func(pts time.Duration, dts time.Duration, sample *fmp4.PartSample) error {
+				onDataCasted(pts, sample.Payload)
+				return nil
+			}
+
 		case *codecs.H265, *codecs.H264:
 			var onDataCasted ClientOnDataH26xFunc = func(pts time.Duration, dts time.Duration, au [][]byte) {}
 			if onData != nil {
@@ -234,7 +244,7 @@
 			}
 
 			postProcess = func(pts time.Duration, dts time.Duration, sample *fmp4.PartSample) error {
-				onDataCasted(pts, [][]byte{sample.GetAudio()})
+				onDataCasted(pts, [][]byte{sample.Payload})
 				return nil
 			}
 
@@ -245,7 +255,7 @@
 			}
 
 			postProcess = func(pts time.Duration, dts time.Duration, sample *fmp4.PartSample) error {
-				onDataCasted(pts, [][]byte{sample.GetAudio()})
+				onDataCasted(pts, [][]byte{sample.Payload})
 				return nil
 			}
 		}

go.mod

@@ -5,7 +5,7 @@ go 1.18
 require (
 	github.com/aler9/writerseeker v0.0.0-20220601075008-6f0e685b9c82
 	github.com/asticode/go-astits v1.12.0
-	github.com/bluenviron/mediacommon v0.7.1-0.20230805234008-34d20294a26b
+	github.com/bluenviron/mediacommon v0.7.1-0.20230806181841-a2766dec314f
 	github.com/gin-gonic/gin v1.9.1
 	github.com/stretchr/testify v1.8.4
 )

go.sum

@@ -6,8 +6,8 @@ github.com/asticode/go-astikit v0.30.0 h1:DkBkRQRIxYcknlaU7W7ksNfn4gMFsB0tqMJflx
 github.com/asticode/go-astikit v0.30.0/go.mod h1:h4ly7idim1tNhaVkdVBeXQZEE3L0xblP7fCWbgwipF0=
 github.com/asticode/go-astits v1.12.0 h1:BiefTgVEyPgEB8nT6J+Sys/uxE4H/a04SW/aedpOpPc=
 github.com/asticode/go-astits v1.12.0/go.mod h1:QSHmknZ51pf6KJdHKZHJTLlMegIrhega3LPWz3ND/iI=
-github.com/bluenviron/mediacommon v0.7.1-0.20230805234008-34d20294a26b h1:/csYQQDmZyXw0CVATJSPBkwT3JYap418W7LLX7mscxw=
-github.com/bluenviron/mediacommon v0.7.1-0.20230805234008-34d20294a26b/go.mod h1:LR4w8cpvzo2ZcmBwXcentvBj7ZlyF9g9xP4dDbt8uJw=
+github.com/bluenviron/mediacommon v0.7.1-0.20230806181841-a2766dec314f h1:hVo5b6WSVT0+p43GpYv0e4cLtmpkhJp3kD6Ef83jzUM=
+github.com/bluenviron/mediacommon v0.7.1-0.20230806181841-a2766dec314f/go.mod h1:LR4w8cpvzo2ZcmBwXcentvBj7ZlyF9g9xP4dDbt8uJw=
 github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM=
 github.com/bytedance/sonic v1.9.1 h1:6iJ6NqdoxCDr6mbY8h18oSO+cShGSMRGCEo7F2h0x8s=
 github.com/bytedance/sonic v1.9.1/go.mod h1:i736AoUSYt75HyZLoJW9ERYxcy6eaN6h4BZXU064P/U=

muxer.go

@@ -11,6 +11,7 @@
 	"github.com/bluenviron/mediacommon/pkg/codecs/av1"
 	"github.com/bluenviron/mediacommon/pkg/codecs/h264"
 	"github.com/bluenviron/mediacommon/pkg/codecs/h265"
+	"github.com/bluenviron/mediacommon/pkg/codecs/vp9"
 
 	"github.com/bluenviron/gohlslib/pkg/codecs"
 	"github.com/bluenviron/gohlslib/pkg/storage"
@@ -198,7 +199,7 @@
 	codec := m.VideoTrack.Codec.(*codecs.AV1)
 	update := false
 	sequenceHeader := codec.SequenceHeader
-	sequenceHeaderPresent := false
+	randomAccess := false
 
 	for _, obu := range obus {
 		var h av1.OBUHeader
@@ -212,7 +213,7 @@
 				update = true
 				sequenceHeader = obu
 			}
-			sequenceHeaderPresent = true
+			randomAccess = true
 		}
 	}
 
@@ -230,17 +231,91 @@
 	}
 
 	forceSwitch := false
-	if sequenceHeaderPresent && m.forceSwitch {
+	if randomAccess && m.forceSwitch {
 		m.forceSwitch = false
 		forceSwitch = true
 	}
 
-	return m.segmenter.writeAV1(ntp, pts, obus, sequenceHeaderPresent, forceSwitch)
+	return m.segmenter.writeAV1(ntp, pts, obus, randomAccess, forceSwitch)
+}
+
+// WriteVP9 writes a VP9 frame.
+func (m *Muxer) WriteVP9(ntp time.Time, pts time.Duration, frame []byte) error {
+	var h vp9.Header
+	err := h.Unmarshal(frame)
+	if err != nil {
+		return err
+	}
+
+	codec := m.VideoTrack.Codec.(*codecs.VP9)
+	randomAccess := false
+	update := false
+	width := codec.Width
+	height := codec.Height
+	profile := codec.Profile
+	bitDepth := codec.BitDepth
+	chromaSubsampling := codec.ChromaSubsampling
+	colorRange := codec.ColorRange
+
+	if h.FrameType == vp9.FrameTypeKeyFrame {
+		randomAccess = true
+
+		if v := h.Width(); v != width {
+			update = true
+			width = v
+		}
+		if v := h.Height(); v != height {
+			update = true
+			height = v
+		}
+		if h.Profile != profile {
+			update = true
+			profile = h.Profile
+		}
+		if h.ColorConfig.BitDepth != bitDepth {
+			update = true
+			bitDepth = h.ColorConfig.BitDepth
+		}
+		if v := h.ChromaSubsampling(); v != chromaSubsampling {
+			update = true
+			chromaSubsampling = v
+		}
+		if h.ColorConfig.ColorRange != colorRange {
+			update = true
+			colorRange = h.ColorConfig.ColorRange
+		}
+	}
+
+	if update {
+		err := func() error {
+			m.server.mutex.Lock()
+			defer m.server.mutex.Unlock()
+			codec.Width = width
+			codec.Height = height
+			codec.Profile = profile
+			codec.BitDepth = bitDepth
+			codec.ChromaSubsampling = chromaSubsampling
+			codec.ColorRange = colorRange
+			return m.server.generateInitFile()
+		}()
+		if err != nil {
+			return fmt.Errorf("unable to generate init.mp4: %v", err)
+		}
+		m.forceSwitch = true
+	}
+
+	forceSwitch := false
+	if randomAccess && m.forceSwitch {
+		m.forceSwitch = false
+		forceSwitch = true
+	}
+
+	return m.segmenter.writeVP9(ntp, pts, frame, randomAccess, forceSwitch)
 }
 
 // WriteH26x writes an H264 or an H265 access unit.
 func (m *Muxer) WriteH26x(ntp time.Time, pts time.Duration, au [][]byte) error {
-	randomAccessPresent := false
+	randomAccess := false
 
 	switch codec := m.VideoTrack.Codec.(type) {
 	case *codecs.H265:
@@ -254,7 +329,7 @@
 
 			switch typ {
 			case h265.NALUType_IDR_W_RADL, h265.NALUType_IDR_N_LP, h265.NALUType_CRA_NUT:
-				randomAccessPresent = true
+				randomAccess = true
 
 			case h265.NALUType_VPS_NUT:
 				if !bytes.Equal(vps, nalu) {
@@ -302,7 +377,7 @@
 
 			switch typ {
 			case h264.NALUTypeIDR:
-				randomAccessPresent = true
+				randomAccess = true
 
 			case h264.NALUTypeNonIDR:
 				nonIDRPresent = true
@@ -335,18 +410,18 @@
 			m.forceSwitch = true
 		}
 
-		if !randomAccessPresent && !nonIDRPresent {
+		if !randomAccess && !nonIDRPresent {
 			return nil
 		}
 	}
 
 	forceSwitch := false
-	if randomAccessPresent && m.forceSwitch {
+	if randomAccess && m.forceSwitch {
 		m.forceSwitch = false
 		forceSwitch = true
 	}
 
-	return m.segmenter.writeH26x(ntp, pts, au, randomAccessPresent, forceSwitch)
+	return m.segmenter.writeH26x(ntp, pts, au, randomAccess, forceSwitch)
 }
 
 // WriteOpus writes Opus packets.

muxer_segmenter.go

@@ -7,6 +7,7 @@ import (
 type muxerSegmenter interface {
 	close()
 	writeAV1(time.Time, time.Duration, [][]byte, bool, bool) error
+	writeVP9(time.Time, time.Duration, []byte, bool, bool) error
 	writeH26x(time.Time, time.Duration, [][]byte, bool, bool) error
 	writeOpus(time.Time, time.Duration, [][]byte) error
 	writeMPEG4Audio(time.Time, time.Duration, [][]byte) error