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Fix mishandling of a completely missing FEC block

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Cameron Gutman 2021-06-01 21:31:48 -05:00
parent da7db59414
commit dd3675db63
1 changed files with 13 additions and 0 deletions
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13
src/RtpAudioQueue.c
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@ -350,6 +350,19 @@ int RtpaAddPacket(PRTP_AUDIO_QUEUE queue, PRTP_PACKET packet, uint16_t length) {
if (enforceQueueConstraints(queue)) { if (enforceQueueConstraints(queue)) {
// Return all available audio data even if there are discontinuities // Return all available audio data even if there are discontinuities
queue->blockHead->allowDiscontinuity = true; queue->blockHead->allowDiscontinuity = true;
// If the next packet in sequence was in an FEC block that we completely missed,
// bump the next RTP sequence number to match the beginning of the next block
// that we received data from.
//
// We could avoid setting allowDiscontinuity to see if we can recover the next
// block. I'm not sure if it makes sense though since we already waited for any
// packets from the last block. We probably want to get things moving rather than
// risk waiting a long time again and really starving the audio device.
if (isBefore16(queue->nextRtpSequenceNumber, queue->blockHead->fecHeader.baseSequenceNumber)) {
queue->nextRtpSequenceNumber = queue->blockHead->fecHeader.baseSequenceNumber;
}
return RTPQ_RET_PACKET_READY; return RTPQ_RET_PACKET_READY;
} }