Alessandro RosandGitHub
a56408db19
When the publisher or source of a stream is offline, the server can be configured to fill gaps in the stream with a video that is played on repeat until a publisher comes back online. This allows readers to stay connected regardless of the state of the stream. The offline video and any future online stream are concatenated without decoding or re-encoding packets, using the original codec.
69 lines
1.3 KiB
Go
69 lines
1.3 KiB
Go
package stream
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import (
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"context"
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"sync"
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"time"
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)
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func multiplyAndDivide2(v, m, d time.Duration) time.Duration {
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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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type offlineSubStream struct {
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stream *Stream
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subStream *SubStream
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ctx context.Context
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ctxCancel func()
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wg sync.WaitGroup
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tracks []*offlineSubStreamTrack
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}
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func (o *offlineSubStream) initialize() error {
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o.subStream = &SubStream{
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Stream: o.stream,
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CurDesc: o.stream.Desc,
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UseRTPPackets: false,
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}
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err := o.subStream.Initialize()
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if err != nil {
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return err
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}
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o.ctx, o.ctxCancel = context.WithCancel(context.Background())
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pos := 0
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o.tracks = make([]*offlineSubStreamTrack, len(o.subStream.CurDesc.Medias))
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for _, media := range o.subStream.CurDesc.Medias {
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for _, forma := range media.Formats {
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t := &offlineSubStreamTrack{
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wg: &o.wg,
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file: o.stream.AlwaysAvailableFile,
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pos: pos,
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ctx: o.ctx,
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subStream: o.subStream,
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media: media,
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format: forma,
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}
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t.initialize()
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o.tracks[pos] = t
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pos++
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}
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}
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return nil
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}
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func (o *offlineSubStream) close(waitLastSample bool) {
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for _, track := range o.tracks {
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track.waitLastSample = waitLastSample
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}
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o.ctxCancel()
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o.wg.Wait()
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}
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