64 lines
1.3 KiB
Go
64 lines
1.3 KiB
Go
package hls
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import (
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"context"
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"time"
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"github.com/asticode/go-astits"
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)
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type clientProcessorMPEGTSTrack struct {
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ts *clientTimeSyncMPEGTS
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onEntry func(time.Duration, []byte) error
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queue chan *astits.PESData
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}
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func newClientProcessorMPEGTSTrack(
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ts *clientTimeSyncMPEGTS,
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onEntry func(time.Duration, []byte) error,
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) *clientProcessorMPEGTSTrack {
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return &clientProcessorMPEGTSTrack{
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ts: ts,
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onEntry: onEntry,
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queue: make(chan *astits.PESData, clientMPEGTSEntryQueueSize),
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}
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}
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func (t *clientProcessorMPEGTSTrack) run(ctx context.Context) error {
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for {
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select {
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case pes := <-t.queue:
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err := t.processEntry(ctx, pes)
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if err != nil {
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return err
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}
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case <-ctx.Done():
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return nil
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}
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}
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}
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func (t *clientProcessorMPEGTSTrack) processEntry(ctx context.Context, pes *astits.PESData) error {
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rawPTS := pes.Header.OptionalHeader.PTS.Base
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var rawDTS int64
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if pes.Header.OptionalHeader.PTSDTSIndicator == astits.PTSDTSIndicatorBothPresent {
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rawDTS = pes.Header.OptionalHeader.DTS.Base
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} else {
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rawDTS = rawPTS
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}
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pts, err := t.ts.convertAndSync(ctx, rawDTS, rawPTS)
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if err != nil {
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return err
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}
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// silently discard packets prior to the first packet of the leading track
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if pts < 0 {
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return nil
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}
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return t.onEntry(pts, pes.Data)
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}
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