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-rw-r--r--include/media/stagefright/AudioSource.h1
-rw-r--r--include/media/stagefright/MPEG4Writer.h2
-rw-r--r--include/media/stagefright/MetaData.h1
-rw-r--r--media/libstagefright/AudioSource.cpp15
-rw-r--r--media/libstagefright/MPEG4Writer.cpp29
-rw-r--r--media/libstagefright/codecs/aacenc/AACEncoder.cpp15
-rw-r--r--media/libstagefright/codecs/amrnb/enc/AMRNBEncoder.cpp16
-rw-r--r--media/libstagefright/codecs/amrwbenc/AMRWBEncoder.cpp16
8 files changed, 63 insertions, 32 deletions
diff --git a/include/media/stagefright/AudioSource.h b/include/media/stagefright/AudioSource.h
index 1af4254..a5cec78 100644
--- a/include/media/stagefright/AudioSource.h
+++ b/include/media/stagefright/AudioSource.h
@@ -72,6 +72,7 @@ private:
int64_t mPrevSampleTimeUs;
int64_t mTotalLostFrames;
int64_t mPrevLostBytes;
+ int64_t mInitialReadTimeUs;
MediaBufferGroup *mGroup;
diff --git a/include/media/stagefright/MPEG4Writer.h b/include/media/stagefright/MPEG4Writer.h
index 2412f6a..9716e98 100644
--- a/include/media/stagefright/MPEG4Writer.h
+++ b/include/media/stagefright/MPEG4Writer.h
@@ -132,7 +132,7 @@ private:
// Adjust other track media clock (presumably wall clock)
// based on audio track media clock with the drift time.
int64_t mDriftTimeUs;
- void addDriftTimeUs(int64_t driftTimeUs);
+ void setDriftTimeUs(int64_t driftTimeUs);
int64_t getDriftTimeUs();
void lock();
diff --git a/include/media/stagefright/MetaData.h b/include/media/stagefright/MetaData.h
index 43354c2..3b31e68 100644
--- a/include/media/stagefright/MetaData.h
+++ b/include/media/stagefright/MetaData.h
@@ -48,6 +48,7 @@ enum {
kKeyTime = 'time', // int64_t (usecs)
kKeyNTPTime = 'ntpT', // uint64_t (ntp-timestamp)
kKeyTargetTime = 'tarT', // int64_t (usecs)
+ kKeyDriftTime = 'dftT', // int64_t (usecs)
kKeyDuration = 'dura', // int64_t (usecs)
kKeyColorFormat = 'colf',
kKeyPlatformPrivate = 'priv', // pointer
diff --git a/media/libstagefright/AudioSource.cpp b/media/libstagefright/AudioSource.cpp
index bcae913..c2f79e8 100644
--- a/media/libstagefright/AudioSource.cpp
+++ b/media/libstagefright/AudioSource.cpp
@@ -84,6 +84,7 @@ status_t AudioSource::start(MetaData *params) {
mTrackMaxAmplitude = false;
mMaxAmplitude = 0;
+ mInitialReadTimeUs = 0;
mStartTimeUs = 0;
int64_t startTimeUs;
if (params && params->findInt64(kKeyTime, &startTimeUs)) {
@@ -210,6 +211,7 @@ status_t AudioSource::read(
return NO_INIT;
}
+ int64_t readTimeUs = systemTime() / 1000;
*out = NULL;
MediaBuffer *buffer;
@@ -223,9 +225,10 @@ status_t AudioSource::read(
if (numFramesRecorded == 0 && mPrevSampleTimeUs == 0) {
+ mInitialReadTimeUs = readTimeUs;
// Initial delay
if (mStartTimeUs > 0) {
- mStartTimeUs = systemTime() / 1000 - mStartTimeUs;
+ mStartTimeUs = readTimeUs - mStartTimeUs;
} else {
// Assume latency is constant.
mStartTimeUs += mRecord->latency() * 1000;
@@ -271,7 +274,10 @@ status_t AudioSource::read(
}
memset(buffer->data(), 0, numLostBytes);
buffer->set_range(0, numLostBytes);
- buffer->meta_data()->setInt64(kKeyTime, mPrevSampleTimeUs);
+ if (numFramesRecorded == 0) {
+ buffer->meta_data()->setInt64(kKeyTime, mStartTimeUs);
+ }
+ buffer->meta_data()->setInt64(kKeyDriftTime, readTimeUs - mInitialReadTimeUs);
mPrevSampleTimeUs = timestampUs;
*out = buffer;
return OK;
@@ -309,7 +315,10 @@ status_t AudioSource::read(
trackMaxAmplitude((int16_t *) buffer->data(), n >> 1);
}
- buffer->meta_data()->setInt64(kKeyTime, mPrevSampleTimeUs);
+ if (numFramesRecorded == 0) {
+ buffer->meta_data()->setInt64(kKeyTime, mStartTimeUs);
+ }
+ buffer->meta_data()->setInt64(kKeyDriftTime, readTimeUs - mInitialReadTimeUs);
CHECK(timestampUs > mPrevSampleTimeUs);
mPrevSampleTimeUs = timestampUs;
LOGV("initial delay: %lld, sample rate: %d, timestamp: %lld",
diff --git a/media/libstagefright/MPEG4Writer.cpp b/media/libstagefright/MPEG4Writer.cpp
index a15b84e..af2b4c4 100644
--- a/media/libstagefright/MPEG4Writer.cpp
+++ b/media/libstagefright/MPEG4Writer.cpp
@@ -1430,9 +1430,6 @@ status_t MPEG4Writer::Track::threadEntry() {
int64_t previousPausedDurationUs = 0;
int64_t timestampUs;
- int64_t wallClockTimeUs = 0;
- int64_t lastWallClockTimeUs = 0;
-
sp<MetaData> meta_data;
bool collectStats = collectStatisticalData();
@@ -1542,14 +1539,15 @@ status_t MPEG4Writer::Track::threadEntry() {
// of neighboring samples. This in turn helps reduce the track header size,
// especially, the number of entries in the "stts" box.
if (mNumSamples > 1) {
- int64_t durationUs = timestampUs + mOwner->getDriftTimeUs() - lastTimestampUs;
+ int64_t currDriftTimeUs = mOwner->getDriftTimeUs();
+ int64_t durationUs = timestampUs + currDriftTimeUs - lastTimestampUs;
int64_t diffUs = (durationUs > lastDurationUs)
? durationUs - lastDurationUs
: lastDurationUs - durationUs;
if (diffUs <= 5000) { // XXX: Magic number 5ms
timestampUs = lastTimestampUs + lastDurationUs;
} else {
- timestampUs += mOwner->getDriftTimeUs();
+ timestampUs += currDriftTimeUs;
}
}
}
@@ -1557,12 +1555,6 @@ status_t MPEG4Writer::Track::threadEntry() {
if (mNumSamples > 1) {
if (timestampUs <= lastTimestampUs) {
LOGW("Frame arrives too late!");
-#if 0
- // Drop the late frame.
- copy->release();
- copy = NULL;
- continue;
-#else
// Don't drop the late frame, since dropping a frame may cause
// problems later during playback
@@ -1573,7 +1565,6 @@ status_t MPEG4Writer::Track::threadEntry() {
} else {
timestampUs = lastTimestampUs + (1000000LL + (mTimeScale >> 1)) / mTimeScale;
}
-#endif
}
}
@@ -1613,12 +1604,10 @@ status_t MPEG4Writer::Track::threadEntry() {
lastDurationTicks = currDurationTicks;
lastTimestampUs = timestampUs;
if (mIsRealTimeRecording && mIsAudio) {
- wallClockTimeUs = systemTime() / 1000;
- int64_t wallClockDurationUs = wallClockTimeUs - lastWallClockTimeUs;
- if (mNumSamples > 2) {
- mOwner->addDriftTimeUs(lastDurationUs - wallClockDurationUs);
+ int64_t driftTimeUs = 0;
+ if (meta_data->findInt64(kKeyDriftTime, &driftTimeUs)) {
+ mOwner->setDriftTimeUs(driftTimeUs);
}
- lastWallClockTimeUs = wallClockTimeUs;
}
if (isSync != 0) {
@@ -1851,10 +1840,10 @@ void MPEG4Writer::Track::logStatisticalData(bool isAudio) {
}
}
-void MPEG4Writer::addDriftTimeUs(int64_t driftTimeUs) {
- LOGV("addDriftTimeUs: %lld us", driftTimeUs);
+void MPEG4Writer::setDriftTimeUs(int64_t driftTimeUs) {
+ LOGV("setDriftTimeUs: %lld us", driftTimeUs);
Mutex::Autolock autolock(mLock);
- mDriftTimeUs += driftTimeUs;
+ mDriftTimeUs = driftTimeUs;
}
int64_t MPEG4Writer::getDriftTimeUs() {
diff --git a/media/libstagefright/codecs/aacenc/AACEncoder.cpp b/media/libstagefright/codecs/aacenc/AACEncoder.cpp
index 052c354..c05e3e5 100644
--- a/media/libstagefright/codecs/aacenc/AACEncoder.cpp
+++ b/media/libstagefright/codecs/aacenc/AACEncoder.cpp
@@ -208,6 +208,8 @@ status_t AACEncoder::read(
MediaBuffer *buffer;
CHECK_EQ(mBufferGroup->acquire_buffer(&buffer), OK);
uint8_t *outPtr = (uint8_t *)buffer->data();
+ bool readFromSource = false;
+ int64_t wallClockTimeUs = 0;
if (mFrameCount == 0) {
memcpy(outPtr, mAudioSpecificConfigData, 2);
@@ -238,9 +240,14 @@ status_t AACEncoder::read(
CHECK_EQ(align, 0);
int64_t timeUs;
+ CHECK(mInputBuffer->meta_data()->findInt64(kKeyDriftTime, &timeUs));
+ wallClockTimeUs = timeUs;
if (mInputBuffer->meta_data()->findInt64(kKeyTime, &timeUs)) {
mAnchorTimeUs = timeUs;
}
+ readFromSource = true;
+ } else {
+ readFromSource = false;
}
size_t copy =
(kNumSamplesPerFrame - mNumInputSamples) * sizeof(int16_t);
@@ -288,9 +295,13 @@ status_t AACEncoder::read(
CHECK(outputData.Length != 0);
buffer->set_range(0, outputData.Length);
- int64_t timestampUs = ((mFrameCount - 1) * 1000000LL * kNumSamplesPerFrame) / mSampleRate;
+ int64_t mediaTimeUs =
+ ((mFrameCount - 1) * 1000000LL * kNumSamplesPerFrame) / mSampleRate;
+ buffer->meta_data()->setInt64(kKeyTime, mAnchorTimeUs + mediaTimeUs);
+ if (readFromSource) {
+ buffer->meta_data()->setInt64(kKeyDriftTime, mediaTimeUs - wallClockTimeUs);
+ }
++mFrameCount;
- buffer->meta_data()->setInt64(kKeyTime, timestampUs);
*out = buffer;
return OK;
diff --git a/media/libstagefright/codecs/amrnb/enc/AMRNBEncoder.cpp b/media/libstagefright/codecs/amrnb/enc/AMRNBEncoder.cpp
index c875426..dab1390 100644
--- a/media/libstagefright/codecs/amrnb/enc/AMRNBEncoder.cpp
+++ b/media/libstagefright/codecs/amrnb/enc/AMRNBEncoder.cpp
@@ -147,6 +147,8 @@ status_t AMRNBEncoder::read(
int64_t seekTimeUs;
ReadOptions::SeekMode mode;
CHECK(options == NULL || !options->getSeekTo(&seekTimeUs, &mode));
+ bool readFromSource = false;
+ int64_t wallClockTimeUs = 0;
while (mNumInputSamples < kNumSamplesPerFrame) {
if (mInputBuffer == NULL) {
@@ -166,12 +168,16 @@ status_t AMRNBEncoder::read(
size_t align = mInputBuffer->range_length() % sizeof(int16_t);
CHECK_EQ(align, 0);
+ readFromSource = true;
int64_t timeUs;
+ CHECK(mInputBuffer->meta_data()->findInt64(kKeyDriftTime, &timeUs));
+ wallClockTimeUs = timeUs;
if (mInputBuffer->meta_data()->findInt64(kKeyTime, &timeUs)) {
mAnchorTimeUs = timeUs;
- mNumFramesOutput = 0;
}
+ } else {
+ readFromSource = false;
}
size_t copy =
@@ -217,8 +223,14 @@ status_t AMRNBEncoder::read(
buffer->set_range(0, res);
// Each frame of 160 samples is 20ms long.
+ int64_t mediaTimeUs = mNumFramesOutput * 20000LL;
buffer->meta_data()->setInt64(
- kKeyTime, mAnchorTimeUs + mNumFramesOutput * 20000);
+ kKeyTime, mAnchorTimeUs + mediaTimeUs);
+
+ if (readFromSource) {
+ buffer->meta_data()->setInt64(kKeyDriftTime,
+ mediaTimeUs - wallClockTimeUs);
+ }
++mNumFramesOutput;
diff --git a/media/libstagefright/codecs/amrwbenc/AMRWBEncoder.cpp b/media/libstagefright/codecs/amrwbenc/AMRWBEncoder.cpp
index 93304d0..b62eb5b 100644
--- a/media/libstagefright/codecs/amrwbenc/AMRWBEncoder.cpp
+++ b/media/libstagefright/codecs/amrwbenc/AMRWBEncoder.cpp
@@ -198,6 +198,8 @@ status_t AMRWBEncoder::read(
int64_t seekTimeUs;
ReadOptions::SeekMode mode;
CHECK(options == NULL || !options->getSeekTo(&seekTimeUs, &mode));
+ bool readFromSource = false;
+ int64_t wallClockTimeUs = 0;
while (mNumInputSamples < kNumSamplesPerFrame) {
if (mInputBuffer == NULL) {
@@ -219,9 +221,14 @@ status_t AMRWBEncoder::read(
CHECK_EQ(align, 0);
int64_t timeUs;
+ CHECK(mInputBuffer->meta_data()->findInt64(kKeyDriftTime, &timeUs));
+ wallClockTimeUs = timeUs;
if (mInputBuffer->meta_data()->findInt64(kKeyTime, &timeUs)) {
mAnchorTimeUs = timeUs;
}
+ readFromSource = true;
+ } else {
+ readFromSource = false;
}
size_t copy =
@@ -276,10 +283,11 @@ status_t AMRWBEncoder::read(
buffer->set_range(0, outputData.Length);
++mNumFramesOutput;
- // XXX: fix timestamp calculation
- int64_t timestampUs = mNumFramesOutput * 20000LL;
-
- buffer->meta_data()->setInt64(kKeyTime, timestampUs);
+ int64_t mediaTimeUs = mNumFramesOutput * 20000LL;
+ buffer->meta_data()->setInt64(kKeyTime, mAnchorTimeUs + mediaTimeUs);
+ if (readFromSource) {
+ buffer->meta_data()->setInt64(kKeyDriftTime, mediaTimeUs - wallClockTimeUs);
+ }
*out = buffer;
return OK;
generated by cgit v1.1 at 2025-08-04 06:58:13 +0000