mirror of
https://github.com/bluenviron/mediamtx
synced 2025-02-20 21:46:56 +00:00
92 lines
2.0 KiB
Go
92 lines
2.0 KiB
Go
package hls
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import (
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"bytes"
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"encoding/hex"
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"io"
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"net/http"
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"strconv"
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"strings"
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"github.com/aler9/gortsplib/v2/pkg/codecs/h265"
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"github.com/aler9/gortsplib/v2/pkg/format"
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)
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func codecParameters(track format.Format) string {
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switch ttrack := track.(type) {
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case *format.H264:
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sps := ttrack.SafeSPS()
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if len(sps) >= 4 {
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return "avc1." + hex.EncodeToString(sps[1:4])
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}
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case *format.H265:
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var sps h265.SPS
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err := sps.Unmarshal(ttrack.SafeSPS())
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if err == nil {
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return "hvc1." + strconv.FormatInt(int64(sps.ProfileTierLevel.GeneralProfileIdc), 10) +
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".4.L" + strconv.FormatInt(int64(sps.ProfileTierLevel.GeneralLevelIdc), 10) + ".B0"
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}
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case *format.MPEG4Audio:
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// https://developer.mozilla.org/en-US/docs/Web/Media/Formats/codecs_parameter
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return "mp4a.40." + strconv.FormatInt(int64(ttrack.Config.Type), 10)
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case *format.Opus:
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return "opus"
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}
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return ""
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}
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type muxerPrimaryPlaylist struct {
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fmp4 bool
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videoTrack format.Format
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audioTrack format.Format
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}
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func newMuxerPrimaryPlaylist(
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fmp4 bool,
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videoTrack format.Format,
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audioTrack format.Format,
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) *muxerPrimaryPlaylist {
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return &muxerPrimaryPlaylist{
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fmp4: fmp4,
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videoTrack: videoTrack,
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audioTrack: audioTrack,
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}
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}
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func (p *muxerPrimaryPlaylist) file() *MuxerFileResponse {
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return &MuxerFileResponse{
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Status: http.StatusOK,
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Header: map[string]string{
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"Content-Type": `application/x-mpegURL`,
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},
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Body: func() io.Reader {
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var codecs []string
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if p.videoTrack != nil {
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codecs = append(codecs, codecParameters(p.videoTrack))
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}
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if p.audioTrack != nil {
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codecs = append(codecs, codecParameters(p.audioTrack))
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}
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var version int
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if !p.fmp4 {
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version = 3
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} else {
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version = 9
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}
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return bytes.NewReader([]byte("#EXTM3U\n" +
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"#EXT-X-VERSION:" + strconv.FormatInt(int64(version), 10) + "\n" +
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"#EXT-X-INDEPENDENT-SEGMENTS\n" +
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"\n" +
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"#EXT-X-STREAM-INF:BANDWIDTH=200000,CODECS=\"" + strings.Join(codecs, ",") + "\"\n" +
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"stream.m3u8\n"))
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}(),
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}
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}
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