test hls ll

2021-04-19 20:59:55 +03:00
parent be0abf0857
commit 2eeda69894
29 changed files with 5883 additions and 0 deletions
--- a/codec/opusparser/opusparser.go
+++ b/codec/opusparser/opusparser.go
@@ -0,0 +1,124 @@
+package opusparser
+
+import (
+	"errors"
+	"time"
+
+	"github.com/deepch/vdk/av"
+)
+
+type CodecData struct {
+	Channels int
+}
+
+func NewCodecData(channels int) *CodecData {
+	return &CodecData{Channels: channels}
+}
+
+func (d CodecData) Type() av.CodecType {
+	return av.OPUS
+}
+
+func (d CodecData) SampleRate() int {
+	return 48000
+}
+
+func (d CodecData) ChannelLayout() av.ChannelLayout {
+	switch d.Channels {
+	case 1:
+		return av.CH_MONO
+	case 2:
+		return av.CH_STEREO
+	default:
+		panic("not implemented")
+	}
+}
+
+func (d CodecData) SampleFormat() av.SampleFormat {
+	return av.S16
+}
+
+func (d CodecData) PacketDuration(pkt []byte) (time.Duration, error) {
+	return PacketDuration(pkt)
+}
+
+func Channels(pkt []byte) int {
+	if len(pkt) > 0 && (pkt[0]&0x4) == 0 {
+		return 1
+	}
+	return 2
+}
+
+func PacketDuration(pkt []byte) (time.Duration, error) {
+	if len(pkt) < 1 {
+		return 0, errors.New("empty opus packet")
+	}
+	toc := pkt[0]
+	config := toc >> 3
+	//stereo := (toc & 0x4) != 0
+	code := toc & 0x3
+	numFr := 0
+	switch code {
+	case 0:
+		// one frame
+		if len(pkt) > 1 {
+			numFr = 1
+		}
+	case 1, 2:
+		// two frames
+		if len(pkt) > 2 {
+			numFr = 2
+		}
+	case 3:
+		// N frames
+		if len(pkt) < 2 {
+			return 0, errors.New("invalid opus packet")
+		}
+		numFr = int(pkt[1] & 0x3f)
+	}
+	return time.Duration(numFr) * opusFrameTimes[config], nil
+}
+
+var opusFrameTimes = []time.Duration{
+	// SILK NB
+	10 * time.Millisecond,
+	20 * time.Millisecond,
+	40 * time.Millisecond,
+	60 * time.Millisecond,
+	// SILK MB
+	10 * time.Millisecond,
+	20 * time.Millisecond,
+	40 * time.Millisecond,
+	60 * time.Millisecond,
+	// SILK WB
+	10 * time.Millisecond,
+	20 * time.Millisecond,
+	40 * time.Millisecond,
+	60 * time.Millisecond,
+	// Hybrid SWB
+	10 * time.Millisecond,
+	20 * time.Millisecond,
+	// Hybrid FB
+	10 * time.Millisecond,
+	20 * time.Millisecond,
+	// CELT NB
+	2500 * time.Microsecond,
+	5 * time.Millisecond,
+	10 * time.Millisecond,
+	20 * time.Millisecond,
+	// CELT WB
+	2500 * time.Microsecond,
+	5 * time.Millisecond,
+	10 * time.Millisecond,
+	20 * time.Millisecond,
+	// CELT SWB
+	2500 * time.Microsecond,
+	5 * time.Millisecond,
+	10 * time.Millisecond,
+	20 * time.Millisecond,
+	// CELT FB
+	2500 * time.Microsecond,
+	5 * time.Millisecond,
+	10 * time.Millisecond,
+	20 * time.Millisecond,
+}