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add new example client-read-format-mpeg4audio-save-to-disk (#235)

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This commit is contained in:
Alessandro Ros
2023-04-09 19:18:28 +02:00
committed by GitHub
parent b6727c07ef
commit c0e3ba2a8d
9 changed files with 207 additions and 31 deletions
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16
examples/client-read-format-h264-save-to-disk/mpegtsmuxer.go
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@@ -54,8 +54,8 @@ func (e *mpegtsMuxer) close() {
e.f.Close()
}
// encode encodes H264 NALUs into MPEG-TS.
func (e *mpegtsMuxer) encode(nalus [][]byte, pts time.Duration) error {
// encode encodes a H264 access unit into MPEG-TS.
func (e *mpegtsMuxer) encode(au [][]byte, pts time.Duration) error {
// prepend an AUD. This is required by some players
filteredNALUs := [][]byte{
{byte(h264.NALUTypeAccessUnitDelimiter), 240},
@@ -64,7 +64,7 @@ func (e *mpegtsMuxer) encode(nalus [][]byte, pts time.Duration) error {
nonIDRPresent := false
idrPresent := false
for _, nalu := range nalus {
for _, nalu := range au {
typ := h264.NALUType(nalu[0] & 0x1F)
switch typ {
case h264.NALUTypeSPS:
@@ -88,7 +88,7 @@ func (e *mpegtsMuxer) encode(nalus [][]byte, pts time.Duration) error {
filteredNALUs = append(filteredNALUs, nalu)
}
nalus = filteredNALUs
au = filteredNALUs
if !nonIDRPresent && !idrPresent {
return nil
@@ -96,7 +96,7 @@ func (e *mpegtsMuxer) encode(nalus [][]byte, pts time.Duration) error {
// add SPS and PPS before every group that contains an IDR
if idrPresent {
nalus = append([][]byte{e.sps, e.pps}, nalus...)
au = append([][]byte{e.sps, e.pps}, au...)
}
var dts time.Duration
@@ -111,7 +111,7 @@ func (e *mpegtsMuxer) encode(nalus [][]byte, pts time.Duration) error {
e.dtsExtractor = h264.NewDTSExtractor()
var err error
dts, err = e.dtsExtractor.Extract(nalus, pts)
dts, err = e.dtsExtractor.Extract(au, pts)
if err != nil {
return err
}
@@ -122,7 +122,7 @@ func (e *mpegtsMuxer) encode(nalus [][]byte, pts time.Duration) error {
} else {
var err error
dts, err = e.dtsExtractor.Extract(nalus, pts)
dts, err = e.dtsExtractor.Extract(au, pts)
if err != nil {
return err
}
@@ -145,7 +145,7 @@ func (e *mpegtsMuxer) encode(nalus [][]byte, pts time.Duration) error {
}
// encode into Annex-B
annexb, err := h264.AnnexBMarshal(nalus)
annexb, err := h264.AnnexBMarshal(au)
if err != nil {
return err
}