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Change presentationTimeMs to presentationTimeUs: retain more resolution when dealing with RTP video timestamps from Sunshine. Include raw rtpTimestamp value for use with integer time APIs.

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This commit is contained in:
Andy Grundman
2025-10-27 09:17:21 -04:00
committed by Cameron Gutman
parent fdd026518c
commit e356b2cfde
4 changed files with 28 additions and 15 deletions
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src/RtpVideoQueue.c
+6 -5
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@@ -11,7 +11,7 @@
// Don't try speculative RFI for 5 minutes after seeing
// an out of order packet or incorrect prediction
#define SPECULATIVE_RFI_COOLDOWN_PERIOD_MS 300000
#define SPECULATIVE_RFI_COOLDOWN_PERIOD_US 300000000
// RTP packets use a 90 KHz presentation timestamp clock
#define PTS_DIVISOR 90
@@ -154,21 +154,22 @@ static bool queuePacket(PRTP_VIDEO_QUEUE queue, PRTPV_QUEUE_ENTRY newEntry, PRTP
newEntry->isParity = isParity;
newEntry->prev = NULL;
newEntry->next = NULL;
newEntry->presentationTimeMs = packet->timestamp / PTS_DIVISOR;
newEntry->presentationTimeUs = ((uint64_t)packet->timestamp * 1000) / PTS_DIVISOR;
newEntry->rtpTimestamp = packet->timestamp;
// FEC recovery packets are synthesized by us, so don't use them to determine OOS data
if (!isFecRecovery) {
if (outOfSequence) {
// This packet was received after a higher sequence number packet, so note that we
// received an out of order packet to disable our speculative RFI recovery logic.
queue->lastOosFramePresentationTimestamp = newEntry->presentationTimeMs;
queue->lastOosFramePresentationTimestamp = newEntry->presentationTimeUs;
if (!queue->receivedOosData) {
Limelog("Leaving speculative RFI mode after OOS video data at frame %u\n",
queue->currentFrameNumber);
queue->receivedOosData = true;
}
}
else if (queue->receivedOosData && newEntry->presentationTimeMs > queue->lastOosFramePresentationTimestamp + SPECULATIVE_RFI_COOLDOWN_PERIOD_MS) {
else if (queue->receivedOosData && newEntry->presentationTimeUs > queue->lastOosFramePresentationTimestamp + SPECULATIVE_RFI_COOLDOWN_PERIOD_US) {
Limelog("Entering speculative RFI mode after sequenced video data at frame %u\n",
queue->currentFrameNumber);
queue->receivedOosData = false;
@@ -234,7 +235,7 @@ static int reconstructFrame(PRTP_VIDEO_QUEUE queue) {
if (queue->reportedLostFrame && !queue->receivedOosData) {
// If it turns out that we lied to the host, stop further speculative RFI requests for a while.
queue->receivedOosData = true;
queue->lastOosFramePresentationTimestamp = queue->pendingFecBlockList.head->presentationTimeMs;
queue->lastOosFramePresentationTimestamp = queue->pendingFecBlockList.head->presentationTimeUs;
Limelog("Leaving speculative RFI mode due to incorrect loss prediction of frame %u\n", queue->currentFrameNumber);
}