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support AC-3 tracks in SRT and UDP; support recording AC-3 tracks
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,198 @@ | ||
| package core | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "time" | ||
|
|
||
| "github.com/bluenviron/gortsplib/v4/pkg/description" | ||
| "github.com/bluenviron/gortsplib/v4/pkg/format" | ||
| "github.com/bluenviron/mediacommon/pkg/formats/mpegts" | ||
|
|
||
| "github.com/bluenviron/mediamtx/internal/stream" | ||
| "github.com/bluenviron/mediamtx/internal/unit" | ||
| ) | ||
|
|
||
| func mpegtsSetupTracks(r *mpegts.Reader, stream **stream.Stream) ([]*description.Media, error) { | ||
| var medias []*description.Media //nolint:prealloc | ||
|
|
||
| var td *mpegts.TimeDecoder | ||
| decodeTime := func(t int64) time.Duration { | ||
| if td == nil { | ||
| td = mpegts.NewTimeDecoder(t) | ||
| } | ||
| return td.Decode(t) | ||
| } | ||
|
|
||
| for _, track := range r.Tracks() { //nolint:dupl | ||
| var medi *description.Media | ||
|
|
||
| switch codec := track.Codec.(type) { | ||
| case *mpegts.CodecH265: | ||
| medi = &description.Media{ | ||
| Type: description.MediaTypeVideo, | ||
| Formats: []format.Format{&format.H265{ | ||
| PayloadTyp: 96, | ||
| }}, | ||
| } | ||
|
|
||
| r.OnDataH26x(track, func(pts int64, _ int64, au [][]byte) error { | ||
| (*stream).WriteUnit(medi, medi.Formats[0], &unit.H265{ | ||
| Base: unit.Base{ | ||
| NTP: time.Now(), | ||
| PTS: decodeTime(pts), | ||
| }, | ||
| AU: au, | ||
| }) | ||
| return nil | ||
| }) | ||
|
|
||
| case *mpegts.CodecH264: | ||
| medi = &description.Media{ | ||
| Type: description.MediaTypeVideo, | ||
| Formats: []format.Format{&format.H264{ | ||
| PayloadTyp: 96, | ||
| PacketizationMode: 1, | ||
| }}, | ||
| } | ||
|
|
||
| r.OnDataH26x(track, func(pts int64, _ int64, au [][]byte) error { | ||
| (*stream).WriteUnit(medi, medi.Formats[0], &unit.H264{ | ||
| Base: unit.Base{ | ||
| NTP: time.Now(), | ||
| PTS: decodeTime(pts), | ||
| }, | ||
| AU: au, | ||
| }) | ||
| return nil | ||
| }) | ||
|
|
||
| case *mpegts.CodecMPEG4Video: | ||
| medi = &description.Media{ | ||
| Type: description.MediaTypeVideo, | ||
| Formats: []format.Format{&format.MPEG4Video{ | ||
| PayloadTyp: 96, | ||
| }}, | ||
| } | ||
|
|
||
| r.OnDataMPEGxVideo(track, func(pts int64, frame []byte) error { | ||
| (*stream).WriteUnit(medi, medi.Formats[0], &unit.MPEG4Video{ | ||
| Base: unit.Base{ | ||
| NTP: time.Now(), | ||
| PTS: decodeTime(pts), | ||
| }, | ||
| Frame: frame, | ||
| }) | ||
| return nil | ||
| }) | ||
|
|
||
| case *mpegts.CodecMPEG1Video: | ||
| medi = &description.Media{ | ||
| Type: description.MediaTypeVideo, | ||
| Formats: []format.Format{&format.MPEG1Video{}}, | ||
| } | ||
|
|
||
| r.OnDataMPEGxVideo(track, func(pts int64, frame []byte) error { | ||
| (*stream).WriteUnit(medi, medi.Formats[0], &unit.MPEG1Video{ | ||
| Base: unit.Base{ | ||
| NTP: time.Now(), | ||
| PTS: decodeTime(pts), | ||
| }, | ||
| Frame: frame, | ||
| }) | ||
| return nil | ||
| }) | ||
|
|
||
| case *mpegts.CodecOpus: | ||
| medi = &description.Media{ | ||
| Type: description.MediaTypeAudio, | ||
| Formats: []format.Format{&format.Opus{ | ||
| PayloadTyp: 96, | ||
| IsStereo: (codec.ChannelCount == 2), | ||
| }}, | ||
| } | ||
|
|
||
| r.OnDataOpus(track, func(pts int64, packets [][]byte) error { | ||
| (*stream).WriteUnit(medi, medi.Formats[0], &unit.Opus{ | ||
| Base: unit.Base{ | ||
| NTP: time.Now(), | ||
| PTS: decodeTime(pts), | ||
| }, | ||
| Packets: packets, | ||
| }) | ||
| return nil | ||
| }) | ||
|
|
||
| case *mpegts.CodecMPEG4Audio: | ||
| medi = &description.Media{ | ||
| Type: description.MediaTypeAudio, | ||
| Formats: []format.Format{&format.MPEG4Audio{ | ||
| PayloadTyp: 96, | ||
| SizeLength: 13, | ||
| IndexLength: 3, | ||
| IndexDeltaLength: 3, | ||
| Config: &codec.Config, | ||
| }}, | ||
| } | ||
|
|
||
| r.OnDataMPEG4Audio(track, func(pts int64, aus [][]byte) error { | ||
| (*stream).WriteUnit(medi, medi.Formats[0], &unit.MPEG4AudioGeneric{ | ||
| Base: unit.Base{ | ||
| NTP: time.Now(), | ||
| PTS: decodeTime(pts), | ||
| }, | ||
| AUs: aus, | ||
| }) | ||
| return nil | ||
| }) | ||
|
|
||
| case *mpegts.CodecMPEG1Audio: | ||
| medi = &description.Media{ | ||
| Type: description.MediaTypeAudio, | ||
| Formats: []format.Format{&format.MPEG1Audio{}}, | ||
| } | ||
|
|
||
| r.OnDataMPEG1Audio(track, func(pts int64, frames [][]byte) error { | ||
| (*stream).WriteUnit(medi, medi.Formats[0], &unit.MPEG1Audio{ | ||
| Base: unit.Base{ | ||
| NTP: time.Now(), | ||
| PTS: decodeTime(pts), | ||
| }, | ||
| Frames: frames, | ||
| }) | ||
| return nil | ||
| }) | ||
|
|
||
| case *mpegts.CodecAC3: | ||
| medi = &description.Media{ | ||
| Type: description.MediaTypeAudio, | ||
| Formats: []format.Format{&format.AC3{ | ||
| PayloadTyp: 96, | ||
| SampleRate: codec.SampleRate, | ||
| ChannelCount: codec.ChannelCount, | ||
| }}, | ||
| } | ||
|
|
||
| r.OnDataAC3(track, func(pts int64, frame []byte) error { | ||
| (*stream).WriteUnit(medi, medi.Formats[0], &unit.AC3{ | ||
| Base: unit.Base{ | ||
| NTP: time.Now(), | ||
| PTS: decodeTime(pts), | ||
| }, | ||
| Frames: [][]byte{frame}, | ||
| }) | ||
| return nil | ||
| }) | ||
|
|
||
| default: | ||
| continue | ||
| } | ||
|
|
||
| medias = append(medias, medi) | ||
| } | ||
|
|
||
| if len(medias) == 0 { | ||
| return nil, fmt.Errorf("no supported tracks found") | ||
| } | ||
|
|
||
| return medias, nil | ||
| } |
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