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author | Chong Zhang <chz@google.com> | 2014-03-13 23:26:39 +0000 |
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committer | Android Git Automerger <android-git-automerger@android.com> | 2014-03-13 23:26:39 +0000 |
commit | 7c47cafa5be623f1db483483ac27f714c54dc1cc (patch) | |
tree | 11f5ad937079c6ec2900ea13f3551ff8c636ac09 /media/libstagefright/omx/GraphicBufferSource.cpp | |
parent | 5b835698486077c5b1fd81b9fd741dfd7ff37cb3 (diff) | |
parent | c69bc40a347c411751cb082b3eb4a82d976a68ec (diff) | |
download | frameworks_av-7c47cafa5be623f1db483483ac27f714c54dc1cc.zip frameworks_av-7c47cafa5be623f1db483483ac27f714c54dc1cc.tar.gz frameworks_av-7c47cafa5be623f1db483483ac27f714c54dc1cc.tar.bz2 |
am c69bc40a: Merge "Cap pts gap between adjacent frames to specified value" into klp-dev
* commit 'c69bc40a347c411751cb082b3eb4a82d976a68ec':
Cap pts gap between adjacent frames to specified value
Diffstat (limited to 'media/libstagefright/omx/GraphicBufferSource.cpp')
-rw-r--r-- | media/libstagefright/omx/GraphicBufferSource.cpp | 100 |
1 files changed, 99 insertions, 1 deletions
diff --git a/media/libstagefright/omx/GraphicBufferSource.cpp b/media/libstagefright/omx/GraphicBufferSource.cpp index 7492577..20fa7ce 100644 --- a/media/libstagefright/omx/GraphicBufferSource.cpp +++ b/media/libstagefright/omx/GraphicBufferSource.cpp @@ -42,7 +42,11 @@ GraphicBufferSource::GraphicBufferSource(OMXNodeInstance* nodeInstance, mEndOfStream(false), mEndOfStreamSent(false), mRepeatAfterUs(-1ll), + mMaxTimestampGapUs(-1ll), + mPrevOriginalTimeUs(-1ll), + mPrevModifiedTimeUs(-1ll), mRepeatLastFrameGeneration(0), + mRepeatLastFrameTimestamp(-1ll), mLatestSubmittedBufferId(-1), mLatestSubmittedBufferFrameNum(0), mLatestSubmittedBufferUseCount(0), @@ -299,6 +303,32 @@ void GraphicBufferSource::codecBufferEmptied(OMX_BUFFERHEADERTYPE* header) { return; } +void GraphicBufferSource::codecBufferFilled(OMX_BUFFERHEADERTYPE* header) { + Mutex::Autolock autoLock(mMutex); + + if (mMaxTimestampGapUs > 0ll + && !(header->nFlags & OMX_BUFFERFLAG_CODECCONFIG)) { + ssize_t index = mOriginalTimeUs.indexOfKey(header->nTimeStamp); + if (index >= 0) { + ALOGV("OUT timestamp: %lld -> %lld", + header->nTimeStamp, mOriginalTimeUs[index]); + header->nTimeStamp = mOriginalTimeUs[index]; + mOriginalTimeUs.removeItemsAt(index); + } else { + // giving up the effort as encoder doesn't appear to preserve pts + ALOGW("giving up limiting timestamp gap (pts = %lld)", + header->nTimeStamp); + mMaxTimestampGapUs = -1ll; + } + if (mOriginalTimeUs.size() > BufferQueue::NUM_BUFFER_SLOTS) { + // something terribly wrong must have happened, giving up... + ALOGE("mOriginalTimeUs has too many entries (%d)", + mOriginalTimeUs.size()); + mMaxTimestampGapUs = -1ll; + } + } +} + void GraphicBufferSource::suspend(bool suspend) { Mutex::Autolock autoLock(mMutex); @@ -431,6 +461,7 @@ bool GraphicBufferSource::repeatLatestSubmittedBuffer_l() { BufferQueue::BufferItem item; item.mBuf = mLatestSubmittedBufferId; item.mFrameNumber = mLatestSubmittedBufferFrameNum; + item.mTimestamp = mRepeatLastFrameTimestamp; status_t err = submitBuffer_l(item, cbi); @@ -440,6 +471,20 @@ bool GraphicBufferSource::repeatLatestSubmittedBuffer_l() { ++mLatestSubmittedBufferUseCount; + /* repeat last frame up to kRepeatLastFrameCount times. + * in case of static scene, a single repeat might not get rid of encoder + * ghosting completely, refresh a couple more times to get better quality + */ + if (--mRepeatLastFrameCount > 0) { + mRepeatLastFrameTimestamp = item.mTimestamp + mRepeatAfterUs * 1000; + + if (mReflector != NULL) { + sp<AMessage> msg = new AMessage(kWhatRepeatLastFrame, mReflector->id()); + msg->setInt32("generation", ++mRepeatLastFrameGeneration); + msg->post(mRepeatAfterUs); + } + } + return true; } @@ -460,8 +505,11 @@ void GraphicBufferSource::setLatestSubmittedBuffer_l( mLatestSubmittedBufferId = item.mBuf; mLatestSubmittedBufferFrameNum = item.mFrameNumber; + mRepeatLastFrameTimestamp = item.mTimestamp + mRepeatAfterUs * 1000; + mLatestSubmittedBufferUseCount = 1; mRepeatBufferDeferred = false; + mRepeatLastFrameCount = kRepeatLastFrameCount; if (mReflector != NULL) { sp<AMessage> msg = new AMessage(kWhatRepeatLastFrame, mReflector->id()); @@ -497,6 +545,39 @@ status_t GraphicBufferSource::signalEndOfInputStream() { return OK; } +int64_t GraphicBufferSource::getTimestamp(const BufferQueue::BufferItem &item) { + int64_t timeUs = item.mTimestamp / 1000; + + if (mMaxTimestampGapUs > 0ll) { + /* Cap timestamp gap between adjacent frames to specified max + * + * In the scenario of cast mirroring, encoding could be suspended for + * prolonged periods. Limiting the pts gap to workaround the problem + * where encoder's rate control logic produces huge frames after a + * long period of suspension. + */ + + int64_t originalTimeUs = timeUs; + if (mPrevOriginalTimeUs >= 0ll) { + if (originalTimeUs < mPrevOriginalTimeUs) { + // Drop the frame if it's going backward in time. Bad timestamp + // could disrupt encoder's rate control completely. + ALOGV("Dropping frame that's going backward in time"); + return -1; + } + int64_t timestampGapUs = originalTimeUs - mPrevOriginalTimeUs; + timeUs = (timestampGapUs < mMaxTimestampGapUs ? + timestampGapUs : mMaxTimestampGapUs) + mPrevModifiedTimeUs; + } + mPrevOriginalTimeUs = originalTimeUs; + mPrevModifiedTimeUs = timeUs; + mOriginalTimeUs.add(timeUs, originalTimeUs); + ALOGV("IN timestamp: %lld -> %lld", originalTimeUs, timeUs); + } + + return timeUs; +} + status_t GraphicBufferSource::submitBuffer_l( const BufferQueue::BufferItem &item, int cbi) { ALOGV("submitBuffer_l cbi=%d", cbi); @@ -513,9 +594,15 @@ status_t GraphicBufferSource::submitBuffer_l( memcpy(data, &type, 4); memcpy(data + 4, &handle, sizeof(buffer_handle_t)); + int64_t timeUs = getTimestamp(item); + if (timeUs < 0ll) { + ALOGE("Dropping frame with bad timestamp"); + return UNKNOWN_ERROR; + } + status_t err = mNodeInstance->emptyDirectBuffer(header, 0, 4 + sizeof(buffer_handle_t), OMX_BUFFERFLAG_ENDOFFRAME, - item.mTimestamp / 1000); + timeUs); if (err != OK) { ALOGW("WARNING: emptyDirectBuffer failed: 0x%x", err); codecBuffer.mGraphicBuffer = NULL; @@ -664,6 +751,17 @@ status_t GraphicBufferSource::setRepeatPreviousFrameDelayUs( return OK; } +status_t GraphicBufferSource::setMaxTimestampGapUs(int64_t maxGapUs) { + Mutex::Autolock autoLock(mMutex); + + if (mExecuting || maxGapUs <= 0ll) { + return INVALID_OPERATION; + } + + mMaxTimestampGapUs = maxGapUs; + + return OK; +} void GraphicBufferSource::onMessageReceived(const sp<AMessage> &msg) { switch (msg->what()) { case kWhatRepeatLastFrame: |