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Discard old keyframes.
Avoids seqno wraparound. Unlikely, but I'm supersticious.
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0eb1593bb8
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1 changed files with 8 additions and 0 deletions
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@ -137,6 +137,10 @@ func (frame *frame) store(seqno uint16, timestamp uint32, first bool, data []byt
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}
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}
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} else if len(frame.entries) > 0 {
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} else if len(frame.entries) > 0 {
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if frame.timestamp != timestamp {
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if frame.timestamp != timestamp {
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delta := seqno - frame.entries[0].seqno
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if (delta & 0x8000) == 0 && delta > 0x4000 {
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frame.entries = frame.entries[:0]
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}
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return
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return
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}
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}
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} else {
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} else {
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@ -271,6 +275,10 @@ func (cache *Cache) Keyframe() (uint32, []uint16) {
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cache.mu.Lock()
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cache.mu.Lock()
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defer cache.mu.Unlock()
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defer cache.mu.Unlock()
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if len(cache.keyframe.entries) == 0 {
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return 0, nil
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}
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seqnos := make([]uint16, len(cache.keyframe.entries))
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seqnos := make([]uint16, len(cache.keyframe.entries))
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for i := range cache.keyframe.entries {
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for i := range cache.keyframe.entries {
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seqnos[i] = cache.keyframe.entries[i].seqno
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seqnos[i] = cache.keyframe.entries[i].seqno
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