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author | Wei Jia <wjia@google.com> | 2015-04-23 14:06:42 -0700 |
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committer | Wei Jia <wjia@google.com> | 2015-04-23 16:08:06 -0700 |
commit | 99d1f78c9b16b5668e78c353373e0e7f4592cab9 (patch) | |
tree | 8970f2f018cc0829ee78c4ed5461c39c8f9a1775 /media | |
parent | 1ac91ed2c67245ea5052182212463d3f0afe8b5a (diff) | |
download | frameworks_av-99d1f78c9b16b5668e78c353373e0e7f4592cab9.zip frameworks_av-99d1f78c9b16b5668e78c353373e0e7f4592cab9.tar.gz frameworks_av-99d1f78c9b16b5668e78c353373e0e7f4592cab9.tar.bz2 |
MediaSync: allow users to query play time for pending audio frames.
Bug: 19666434
Change-Id: I5cfd3e1a9b4f56aaa6482facd55a22ed1e7ed3e6
Diffstat (limited to 'media')
-rw-r--r-- | media/libstagefright/MediaSync.cpp | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/media/libstagefright/MediaSync.cpp b/media/libstagefright/MediaSync.cpp index 9c37a3d..8030a36 100644 --- a/media/libstagefright/MediaSync.cpp +++ b/media/libstagefright/MediaSync.cpp @@ -179,6 +179,42 @@ sp<const MediaClock> MediaSync::getMediaClock() { return mMediaClock; } +status_t MediaSync::getPlayTimeForPendingAudioFrames(int64_t *outTimeUs) { + Mutex::Autolock lock(mMutex); + // User should check the playback rate if it doesn't want to receive a + // huge number for play time. + if (mPlaybackRate == 0.0f) { + *outTimeUs = INT64_MAX; + return OK; + } + + uint32_t numFramesPlayed = 0; + if (mAudioTrack != NULL) { + status_t res = mAudioTrack->getPosition(&numFramesPlayed); + if (res != OK) { + return res; + } + } + + int64_t numPendingFrames = mNumFramesWritten - numFramesPlayed; + if (numPendingFrames < 0) { + numPendingFrames = 0; + ALOGW("getPlayTimeForPendingAudioFrames: pending frame count is negative."); + } + double timeUs = numPendingFrames * 1000000.0 + / (mNativeSampleRateInHz * (double)mPlaybackRate); + if (timeUs > (double)INT64_MAX) { + // Overflow. + *outTimeUs = INT64_MAX; + ALOGW("getPlayTimeForPendingAudioFrames: play time for pending audio frames " + "is too high, possibly due to super low playback rate(%f)", mPlaybackRate); + } else { + *outTimeUs = (int64_t)timeUs; + } + + return OK; +} + status_t MediaSync::updateQueuedAudioData( size_t sizeInBytes, int64_t presentationTimeUs) { if (sizeInBytes == 0) { |