rtsp: check seq # after play response is parsed
Bug: 29405982
Change-Id: I9218eaeb23046c29ae686ec0a698d53e134f0d4c
diff --git a/media/libstagefright/rtsp/MyHandler.h b/media/libstagefright/rtsp/MyHandler.h
index f9a9ab9..abe2582 100644
--- a/media/libstagefright/rtsp/MyHandler.h
+++ b/media/libstagefright/rtsp/MyHandler.h
@@ -1042,49 +1042,13 @@
return;
}
- sp<ABuffer> accessUnit;
- CHECK(msg->findBuffer("access-unit", &accessUnit));
-
- uint32_t seqNum = (uint32_t)accessUnit->int32Data();
-
if (mSeekPending) {
ALOGV("we're seeking, dropping stale packet.");
break;
}
- if (track->mNewSegment) {
- // The sequence number from RTP packet has only 16 bits and is extended
- // by ARTPSource. Only the low 16 bits of seq in RTP-Info of reply of
- // RTSP "PLAY" command should be used to detect the first RTP packet
- // after seeking.
- if (track->mAllowedStaleAccessUnits > 0) {
- if ((((seqNum ^ track->mFirstSeqNumInSegment) & 0xffff) != 0)) {
- // Not the first rtp packet of the stream after seeking, discarding.
- track->mAllowedStaleAccessUnits--;
- ALOGV("discarding stale access unit (0x%x : 0x%x)",
- seqNum, track->mFirstSeqNumInSegment);
- break;
- }
- } else { // track->mAllowedStaleAccessUnits <= 0
- mNumAccessUnitsReceived = 0;
- ALOGW_IF(track->mAllowedStaleAccessUnits == 0,
- "Still no first rtp packet after %d stale ones",
- kMaxAllowedStaleAccessUnits);
- track->mAllowedStaleAccessUnits = -1;
- break;
- }
-
- // Now found the first rtp packet of the stream after seeking.
- track->mFirstSeqNumInSegment = seqNum;
- track->mNewSegment = false;
- }
-
- if (seqNum < track->mFirstSeqNumInSegment) {
- ALOGV("dropping stale access-unit (%d < %d)",
- seqNum, track->mFirstSeqNumInSegment);
- break;
- }
-
+ sp<ABuffer> accessUnit;
+ CHECK(msg->findBuffer("access-unit", &accessUnit));
onAccessUnitComplete(trackIndex, accessUnit);
break;
}
@@ -1852,17 +1816,16 @@
int32_t trackIndex, const sp<ABuffer> &accessUnit) {
ALOGV("onAccessUnitComplete track %d", trackIndex);
+ TrackInfo *track = &mTracks.editItemAt(trackIndex);
if(!mPlayResponseParsed){
- ALOGI("play response is not parsed, storing accessunit");
- TrackInfo *track = &mTracks.editItemAt(trackIndex);
+ uint32_t seqNum = (uint32_t)accessUnit->int32Data();
+ ALOGI("play response is not parsed, storing accessunit %u", seqNum);
track->mPackets.push_back(accessUnit);
return;
}
handleFirstAccessUnit();
- TrackInfo *track = &mTracks.editItemAt(trackIndex);
-
if (!mAllTracksHaveTime) {
ALOGV("storing accessUnit, no time established yet");
track->mPackets.push_back(accessUnit);
@@ -1873,6 +1836,41 @@
sp<ABuffer> accessUnit = *track->mPackets.begin();
track->mPackets.erase(track->mPackets.begin());
+ uint32_t seqNum = (uint32_t)accessUnit->int32Data();
+ if (track->mNewSegment) {
+ // The sequence number from RTP packet has only 16 bits and is extended
+ // by ARTPSource. Only the low 16 bits of seq in RTP-Info of reply of
+ // RTSP "PLAY" command should be used to detect the first RTP packet
+ // after seeking.
+ if (track->mAllowedStaleAccessUnits > 0) {
+ if ((((seqNum ^ track->mFirstSeqNumInSegment) & 0xffff) != 0)) {
+ // Not the first rtp packet of the stream after seeking, discarding.
+ track->mAllowedStaleAccessUnits--;
+ ALOGV("discarding stale access unit (0x%x : 0x%x)",
+ seqNum, track->mFirstSeqNumInSegment);
+ continue;
+ }
+ } else { // track->mAllowedStaleAccessUnits <= 0
+ mNumAccessUnitsReceived = 0;
+ ALOGW_IF(track->mAllowedStaleAccessUnits == 0,
+ "Still no first rtp packet after %d stale ones",
+ kMaxAllowedStaleAccessUnits);
+ track->mAllowedStaleAccessUnits = -1;
+ return;
+ }
+
+ // Now found the first rtp packet of the stream after seeking.
+ track->mFirstSeqNumInSegment = seqNum;
+ track->mNewSegment = false;
+ }
+
+ if (seqNum < track->mFirstSeqNumInSegment) {
+ ALOGV("dropping stale access-unit (%d < %d)",
+ seqNum, track->mFirstSeqNumInSegment);
+ continue;
+ }
+
+
if (addMediaTimestamp(trackIndex, track, accessUnit)) {
postQueueAccessUnit(trackIndex, accessUnit);
}
