mirror of
https://github.com/bluenviron/mediamtx
synced 2025-02-10 00:18:22 +00:00
e5ab731d14
* hls source: support fMP4s video streams * hls source: start reading live streams from (end of playlist - starting point) * hls client: wait processing of current fMP4 segment before downloading another one * hls client: support fmp4 trun boxes with default sample duration, flags and size * hls client: merge fmp4 init file reader and writer * hls client: merge fmp4 part reader and writer * hls client: improve precision of go <-> mp4 time conversion * hls client: fix esds generation in go-mp4 * hls client: support audio in separate playlist * hls client: support an arbitrary number of tracks in fmp4 init files * hls client: support EXT-X-BYTERANGE * hls client: support fmp4 segments with multiple parts at once * hls client: support an arbitrary number of mpeg-ts tracks * hls client: synchronize tracks around a primary track * update go-mp4 * hls: synchronize track reproduction around a leading one * hls client: reset stream if playback is too late * hls client: add limit on DTS-RTC difference * hls client: support again streams that don't provide codecs in master playlist
60 lines
1.4 KiB
Go
60 lines
1.4 KiB
Go
package hls
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import (
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"context"
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"fmt"
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"time"
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)
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func durationGoToMp4(v time.Duration, timeScale uint32) uint64 {
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timeScale64 := uint64(timeScale)
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secs := v / time.Second
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dec := v % time.Second
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return uint64(secs)*timeScale64 + uint64(dec)*timeScale64/uint64(time.Second)
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}
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func durationMp4ToGo(v uint64, timeScale uint32) time.Duration {
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timeScale64 := uint64(timeScale)
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secs := v / timeScale64
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dec := v % timeScale64
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return time.Duration(secs)*time.Second + time.Duration(dec)*time.Second/time.Duration(timeScale64)
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}
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type clientTimeSyncFMP4 struct {
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startRTC time.Time
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startDTS time.Duration
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}
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func newClientTimeSyncFMP4(timeScale uint32, baseTime uint64) *clientTimeSyncFMP4 {
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return &clientTimeSyncFMP4{
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startRTC: time.Now(),
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startDTS: durationMp4ToGo(baseTime, timeScale),
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}
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}
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func (ts *clientTimeSyncFMP4) convertAndSync(ctx context.Context, timeScale uint32,
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rawDTS uint64, ptsOffset int32,
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) (time.Duration, error) {
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pts := durationMp4ToGo(rawDTS+uint64(ptsOffset), timeScale)
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dts := durationMp4ToGo(rawDTS, timeScale)
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pts -= ts.startDTS
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dts -= ts.startDTS
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elapsed := time.Since(ts.startRTC)
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if dts > elapsed {
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diff := dts - elapsed
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if diff > clientMaxDTSRTCDiff {
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return 0, fmt.Errorf("difference between DTS and RTC is too big")
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}
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select {
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case <-time.After(diff):
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case <-ctx.Done():
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return 0, fmt.Errorf("terminated")
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}
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}
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return pts, nil
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}
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