moonlight-stream/moonlight-common-c
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Fetch receive time only once per frame instead of once per packet

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This commit is contained in:
Cameron Gutman 2019-04-26 21:51:17 -07:00
parent fe7cb006da
commit 0b8dc80823
3 changed files with 12 additions and 1 deletions
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9
src/RtpFecQueue.c
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@ -44,7 +44,6 @@ static int queuePacket(PRTP_FEC_QUEUE queue, PRTPFEC_QUEUE_ENTRY newEntry, int h
newEntry->packet = packet;
newEntry->length = length;
newEntry->isParity = isParity;
newEntry->receiveTimeMs = PltGetMillis();
newEntry->prev = NULL;
newEntry->next = NULL;
@ -266,6 +265,13 @@ static void submitCompletedFrame(PRTP_FEC_QUEUE queue) {
removeEntry(queue, entry);
entry->prev = entry->next = NULL;
// To avoid having to sample the system time for each packet, we cheat
// and use the first packet's receive time for all packets. This ends up
// actually being better for the measurements that the depacketizer does,
// since it properly handles out of order packets.
LC_ASSERT(queue->bufferFirstRecvTimeMs != 0);
entry->receiveTimeMs = queue->bufferFirstRecvTimeMs;
// Submit this packet for decoding. It will own freeing the entry now.
queueRtpPacket(entry);
break;
@ -331,6 +337,7 @@ int RtpfAddPacket(PRTP_FEC_QUEUE queue, PRTP_PACKET packet, int length, PRTPFEC_
queue->bufferTail = NULL;
queue->bufferSize = 0;
queue->bufferFirstRecvTimeMs = PltGetMillis();
queue->bufferLowestSequenceNumber = U16(packet->sequenceNumber - fecIndex);
queue->nextContiguousSequenceNumber = queue->bufferLowestSequenceNumber;
queue->receivedBufferDataPackets = 0;

1
src/RtpFecQueue.h
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@ -15,6 +15,7 @@ typedef struct _RTPFEC_QUEUE_ENTRY {
typedef struct _RTP_FEC_QUEUE {
PRTPFEC_QUEUE_ENTRY bufferHead;
PRTPFEC_QUEUE_ENTRY bufferTail;
unsigned long long bufferFirstRecvTimeMs;
int bufferSize;
int bufferLowestSequenceNumber;
int bufferHighestSequenceNumber;

3
src/VideoDepacketizer.c
View File

@ -669,6 +669,9 @@ void processRtpPayload(PNV_VIDEO_PACKET videoPacket, int length, unsigned long l
void queueRtpPacket(PRTPFEC_QUEUE_ENTRY queueEntry) {
int dataOffset;
LC_ASSERT(!queueEntry->isParity);
LC_ASSERT(queueEntry->receiveTimeMs != 0);
dataOffset = sizeof(*queueEntry->packet);
if (queueEntry->packet->header & FLAG_EXTENSION) {
dataOffset += 4; // 2 additional fields