mirror of
https://github.com/aler9/gortsplib
synced 2025-10-31 18:42:40 +08:00
52 lines
1.1 KiB
Go
52 lines
1.1 KiB
Go
package main
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import (
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"bufio"
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"os"
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"github.com/bluenviron/gortsplib/v4/pkg/format"
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"github.com/bluenviron/mediacommon/v2/pkg/formats/mpegts"
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)
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func multiplyAndDivide(v, m, d int64) int64 {
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secs := v / d
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dec := v % d
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return (secs*m + dec*m/d)
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}
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// mpegtsMuxer allows to save a MPEG-4 audio stream into a MPEG-TS file.
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type mpegtsMuxer struct {
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fileName string
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format format.Format
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track *mpegts.Track
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f *os.File
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b *bufio.Writer
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w *mpegts.Writer
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}
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// initialize initializes a mpegtsMuxer.
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func (e *mpegtsMuxer) initialize() error {
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var err error
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e.f, err = os.Create(e.fileName)
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if err != nil {
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return err
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}
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e.b = bufio.NewWriter(e.f)
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e.w = mpegts.NewWriter(e.b, []*mpegts.Track{e.track})
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return nil
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}
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// close closes all the mpegtsMuxer resources.
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func (e *mpegtsMuxer) close() {
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e.b.Flush()
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e.f.Close()
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}
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// writeMPEG4Audio writes MPEG-4 audio access units into MPEG-TS.
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func (e *mpegtsMuxer) writeMPEG4Audio(aus [][]byte, pts int64) error {
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return e.w.WriteMPEG4Audio(e.track, multiplyAndDivide(pts, 90000, int64(e.format.ClockRate())), aus)
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}
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