void AudioOffloadPlayer::TimeUpdate()
{
MOZ_ASSERT(NS_IsMainThread());
TimeStamp now = TimeStamp::Now();
// If TIMEUPDATE_MS has passed since the last fire update event fired, fire
// another timeupdate event.
if ((mLastFireUpdateTime.IsNull() ||
now - mLastFireUpdateTime >=
TimeDuration::FromMilliseconds(TIMEUPDATE_MS))) {
mLastFireUpdateTime = now;
NotifyPositionChanged();
}
if (mPlayState != MediaDecoder::PLAY_STATE_PLAYING || !mIsElementVisible) {
StopTimeUpdate();
}
}
size_t AudioOffloadPlayer::FillBuffer(void* aData, size_t aSize)
{
CHECK(mAudioSink.get());
if (mReachedEOS) {
return 0;
}
size_t sizeDone = 0;
size_t sizeRemaining = aSize;
while (sizeRemaining > 0) {
MediaSource::ReadOptions options;
bool refreshSeekTime = false;
{
android::Mutex::Autolock autoLock(mLock);
if (mSeeking) {
options.setSeekTo(mSeekTimeUs);
refreshSeekTime = true;
if (mInputBuffer) {
mInputBuffer->release();
mInputBuffer = nullptr;
}
mSeeking = false;
}
}
if (!mInputBuffer) {
status_t err;
err = mSource->read(&mInputBuffer, &options);
CHECK((!err && mInputBuffer) || (err && !mInputBuffer));
android::Mutex::Autolock autoLock(mLock);
if (err != OK) {
AUDIO_OFFLOAD_LOG(PR_LOG_ERROR, ("Error while reading media source %d "
"Ok to receive EOS error at end", err));
if (!mReachedEOS) {
// After seek there is a possible race condition if
// OffloadThread is observing state_stopping_1 before
// framesReady() > 0. Ensure sink stop is called
// after last buffer is released. This ensures the
// partial buffer is written to the driver before
// stopping one is observed.The drawback is that
// there will be an unnecessary call to the parser
// after parser signalled EOS.
if (sizeDone > 0) {
AUDIO_OFFLOAD_LOG(PR_LOG_DEBUG, ("send Partial buffer down"));
AUDIO_OFFLOAD_LOG(PR_LOG_DEBUG, ("skip calling stop till next"
" fillBuffer"));
break;
}
// no more buffers to push - stop() and wait for STREAM_END
// don't set mReachedEOS until stream end received
mAudioSink->Stop();
}
break;
}
if(mInputBuffer->range_length() != 0) {
CHECK(mInputBuffer->meta_data()->findInt64(
kKeyTime, &mPositionTimeMediaUs));
}
if (refreshSeekTime) {
if (mDispatchSeekEvents && !mSeekDuringPause) {
mDispatchSeekEvents = false;
AUDIO_OFFLOAD_LOG(PR_LOG_DEBUG, ("FillBuffer posting SEEK_COMPLETE"));
nsCOMPtr<nsIRunnable> nsEvent = NS_NewRunnableMethod(mObserver,
&MediaDecoder::SeekingStopped);
NS_DispatchToMainThread(nsEvent, NS_DISPATCH_NORMAL);
} else if (mSeekDuringPause) {
// Callback is already called for seek during pause. Just reset the
// flag
AUDIO_OFFLOAD_LOG(PR_LOG_DEBUG, ("Not posting seek complete as its"
" already faked"));
mSeekDuringPause = false;
}
NotifyPositionChanged();
// need to adjust the mStartPosUs for offload decoding since parser
// might not be able to get the exact seek time requested.
mStartPosUs = mPositionTimeMediaUs;
AUDIO_OFFLOAD_LOG(PR_LOG_DEBUG, ("Adjust seek time to: %.2f",
mStartPosUs / 1E6));
// clear seek time with mLock locked and once we have valid
// mPositionTimeMediaUs
// before clearing mSeekTimeUs check if a new seek request has been
// received while we were reading from the source with mLock released.
if (!mSeeking) {
mSeekTimeUs = 0;
}
}
}
if (mInputBuffer->range_length() == 0) {
mInputBuffer->release();
mInputBuffer = nullptr;
continue;
}
size_t copy = sizeRemaining;
if (copy > mInputBuffer->range_length()) {
copy = mInputBuffer->range_length();
}
memcpy((char *)aData + sizeDone,
(const char *)mInputBuffer->data() + mInputBuffer->range_offset(),
copy);
mInputBuffer->set_range(mInputBuffer->range_offset() + copy,
mInputBuffer->range_length() - copy);
sizeDone += copy;
sizeRemaining -= copy;
}
return sizeDone;
}
size_t AudioOffloadPlayer::FillBuffer(void* aData, size_t aSize)
{
CHECK(mAudioSink.get());
if (mReachedEOS) {
return 0;
}
size_t sizeDone = 0;
size_t sizeRemaining = aSize;
int64_t seekTimeUs = -1;
while (sizeRemaining > 0) {
MediaSource::ReadOptions options;
bool refreshSeekTime = false;
{
android::Mutex::Autolock autoLock(mLock);
if (mSeekTarget.IsValid()) {
seekTimeUs = mSeekTarget.mTime;
options.setSeekTo(seekTimeUs);
refreshSeekTime = true;
if (mInputBuffer) {
mInputBuffer->release();
mInputBuffer = nullptr;
}
}
}
if (!mInputBuffer) {
status_t err;
err = mSource->read(&mInputBuffer, &options);
CHECK((!err && mInputBuffer) || (err && !mInputBuffer));
android::Mutex::Autolock autoLock(mLock);
if (err != OK) {
if (mSeekTarget.IsValid()) {
mSeekTarget.Reset();
}
AUDIO_OFFLOAD_LOG(PR_LOG_ERROR, ("Error while reading media source %d "
"Ok to receive EOS error at end", err));
if (!mReachedEOS) {
// After seek there is a possible race condition if
// OffloadThread is observing state_stopping_1 before
// framesReady() > 0. Ensure sink stop is called
// after last buffer is released. This ensures the
// partial buffer is written to the driver before
// stopping one is observed.The drawback is that
// there will be an unnecessary call to the parser
// after parser signalled EOS.
if (sizeDone > 0) {
AUDIO_OFFLOAD_LOG(PR_LOG_DEBUG, ("send Partial buffer down"));
AUDIO_OFFLOAD_LOG(PR_LOG_DEBUG, ("skip calling stop till next"
" fillBuffer"));
break;
}
// no more buffers to push - stop() and wait for STREAM_END
// don't set mReachedEOS until stream end received
mAudioSink->Stop();
}
break;
}
if(mInputBuffer->range_length() != 0) {
CHECK(mInputBuffer->meta_data()->findInt64(
kKeyTime, &mPositionTimeMediaUs));
}
if (mSeekTarget.IsValid() && seekTimeUs == mSeekTarget.mTime) {
MOZ_ASSERT(mSeekTarget.IsValid());
mSeekTarget.Reset();
if (!mSeekPromise.IsEmpty()) {
AUDIO_OFFLOAD_LOG(PR_LOG_DEBUG, ("FillBuffer posting SEEK_COMPLETE"));
MediaDecoder::SeekResolveValue val(mReachedEOS, mSeekTarget.mEventVisibility);
mSeekPromise.Resolve(val, __func__);
}
} else if (mSeekTarget.IsValid()) {
AUDIO_OFFLOAD_LOG(PR_LOG_DEBUG, ("seek is updated during unlocking mLock"));
}
if (refreshSeekTime) {
NotifyPositionChanged();
// need to adjust the mStartPosUs for offload decoding since parser
// might not be able to get the exact seek time requested.
mStartPosUs = mPositionTimeMediaUs;
AUDIO_OFFLOAD_LOG(PR_LOG_DEBUG, ("Adjust seek time to: %.2f",
mStartPosUs / 1E6));
}
}
if (mInputBuffer->range_length() == 0) {
mInputBuffer->release();
mInputBuffer = nullptr;
continue;
}
size_t copy = sizeRemaining;
if (copy > mInputBuffer->range_length()) {
copy = mInputBuffer->range_length();
}
memcpy((char *)aData + sizeDone,
(const char *)mInputBuffer->data() + mInputBuffer->range_offset(),
copy);
mInputBuffer->set_range(mInputBuffer->range_offset() + copy,
mInputBuffer->range_length() - copy);
sizeDone += copy;
sizeRemaining -= copy;
}
return sizeDone;
}
