nsresult
AudioSink::InitializeAudioStream()
{
// AudioStream initialization can block for extended periods in unusual
// circumstances, so we take care to drop the decoder monitor while
// initializing.
RefPtr<AudioStream> audioStream(new AudioStream());
audioStream->Init(mInfo.mChannels, mInfo.mRate,
mChannel, AudioStream::HighLatency);
// TODO: Check Init's return value and bail on error. Unfortunately this
// causes some tests to fail due to playback failing.
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
mAudioStream = audioStream;
UpdateStreamSettings();
return NS_OK;
}
void
MediaOmxCommonDecoder::PauseStateMachine()
{
MOZ_ASSERT(NS_IsMainThread());
GetReentrantMonitor().AssertCurrentThreadIn();
DECODER_LOG(PR_LOG_DEBUG, ("%s", __PRETTY_FUNCTION__));
if (!mDecoderStateMachine) {
return;
}
// enter dormant state
RefPtr<nsRunnable> event =
NS_NewRunnableMethodWithArg<bool>(
mDecoderStateMachine,
&MediaDecoderStateMachine::SetDormant,
true);
mDecoderStateMachine->TaskQueue()->Dispatch(event);
}
bool
AudioSink::IsPlaybackContinuing()
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
if (mPlaying && mAudioStream->IsPaused()) {
mAudioStream->Resume();
}
// If we're shutting down, captured, or at EOS, break out and exit the audio
// thread.
if (mStopAudioThread || AudioQueue().AtEndOfStream()) {
return false;
}
UpdateStreamSettings();
return true;
}
void
DASHRepDecoder::NotifyDownloadEnded(nsresult aStatus)
{
NS_ASSERTION(NS_IsMainThread(), "Should be on main thread.");
if (!mMainDecoder) {
LOG("Error! Main Decoder is reported as null: mMainDecoder [%p]",
mMainDecoder.get());
DecodeError();
return;
}
if (NS_SUCCEEDED(aStatus)) {
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
// Decrement counter as metadata chunks are downloaded.
// Note: Reader gets next chunk download via |ChannelMediaResource|:|Seek|.
if (mMetadataChunkCount > 0) {
LOG("Metadata chunk [%d] downloaded: range requested [%lld - %lld] "
"subsegmentIdx [%d]",
mMetadataChunkCount,
mCurrentByteRange.mStart, mCurrentByteRange.mEnd, mSubsegmentIdx);
mMetadataChunkCount--;
} else {
LOG("Byte range downloaded: status [%x] range requested [%lld - %lld] "
"subsegmentIdx [%d]",
aStatus, mCurrentByteRange.mStart, mCurrentByteRange.mEnd,
mSubsegmentIdx);
if ((uint32_t)mSubsegmentIdx == mByteRanges.Length()-1) {
mResource->NotifyLastByteRange();
}
// Notify main decoder that a DATA byte range is downloaded.
mMainDecoder->NotifyDownloadEnded(this, aStatus, mSubsegmentIdx);
}
} else if (aStatus == NS_BINDING_ABORTED) {
LOG("MPD download has been cancelled by the user: aStatus [%x].", aStatus);
if (mMainDecoder) {
mMainDecoder->LoadAborted();
}
return;
} else if (aStatus != NS_BASE_STREAM_CLOSED) {
LOG("Network error trying to download MPD: aStatus [%x].", aStatus);
NetworkError();
}
}
void MediaOmxDecoder::ResumeStateMachine()
{
MOZ_ASSERT(NS_IsMainThread());
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
DECODER_LOG(PR_LOG_DEBUG, ("%s current time %f", __PRETTY_FUNCTION__,
mCurrentTime));
if (!mDecoderStateMachine) {
return;
}
mFallbackToStateMachine = true;
mAudioOffloadPlayer = nullptr;
mRequestedSeekTarget = SeekTarget(mCurrentTime, SeekTarget::Accurate);
mNextState = mPlayState;
ChangeState(PLAY_STATE_LOADING);
mDecoderStateMachine->SetDormant(false);
}
nsresult
DecodedAudioDataSink::InitializeAudioStream()
{
// AudioStream initialization can block for extended periods in unusual
// circumstances, so we take care to drop the decoder monitor while
// initializing.
RefPtr<AudioStream> audioStream(new AudioStream());
nsresult rv = audioStream->Init(mInfo.mChannels, mInfo.mRate,
mChannel, AudioStream::HighLatency);
if (NS_FAILED(rv)) {
audioStream->Shutdown();
return rv;
}
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
mAudioStream = audioStream;
return NS_OK;
}
void MediaOmxDecoder::PlaybackPositionChanged()
{
MOZ_ASSERT(NS_IsMainThread());
if (!mAudioOffloadPlayer) {
MediaDecoder::PlaybackPositionChanged();
return;
}
if (!mOwner || mShuttingDown) {
return;
}
double lastTime = mCurrentTime;
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
mCurrentTime = mAudioOffloadPlayer->GetMediaTimeSecs();
}
if (mOwner && lastTime != mCurrentTime) {
FireTimeUpdate();
}
}
void
MediaSourceDecoder::SetMediaSourceDuration(double aDuration, MSRangeRemovalAction aAction)
{
MOZ_ASSERT(NS_IsMainThread());
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
double oldDuration = ExplicitDuration();
if (aDuration >= 0) {
int64_t checkedDuration;
if (NS_FAILED(SecondsToUsecs(aDuration, checkedDuration))) {
// INT64_MAX is used as infinity by the state machine.
// We want a very bigger number, but not infinity.
checkedDuration = INT64_MAX - 1;
}
SetExplicitDuration(aDuration);
} else {
SetExplicitDuration(PositiveInfinity<double>());
}
if (mMediaSource && aAction != MSRangeRemovalAction::SKIP) {
mMediaSource->DurationChange(oldDuration, aDuration);
}
}
void
MediaOmxCommonDecoder::ResumeStateMachine()
{
MOZ_ASSERT(NS_IsMainThread());
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
DECODER_LOG(PR_LOG_DEBUG, ("%s current time %f", __PRETTY_FUNCTION__, mLogicalPosition));
if (mShuttingDown) {
return;
}
if (!GetStateMachine()) {
return;
}
mFallbackToStateMachine = true;
mAudioOffloadPlayer = nullptr;
SeekTarget target = SeekTarget(mLogicalPosition,
SeekTarget::Accurate,
MediaDecoderEventVisibility::Suppressed);
// Call Seek of MediaDecoderStateMachine to suppress seek events.
RefPtr<nsRunnable> event =
NS_NewRunnableMethodWithArg<SeekTarget>(
GetStateMachine(),
&MediaDecoderStateMachine::Seek,
target);
GetStateMachine()->TaskQueue()->Dispatch(event.forget());
mNextState = mPlayState;
ChangeState(PLAY_STATE_LOADING);
// exit dormant state
event =
NS_NewRunnableMethodWithArg<bool>(
GetStateMachine(),
&MediaDecoderStateMachine::SetDormant,
false);
GetStateMachine()->TaskQueue()->Dispatch(event.forget());
UpdateLogicalPosition();
}
void
MediaSourceDecoder::SetMediaSourceDuration(double aDuration, MSRangeRemovalAction aAction)
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
double oldDuration = mMediaSourceDuration;
if (aDuration >= 0) {
int64_t checkedDuration;
if (NS_FAILED(SecondsToUsecs(aDuration, checkedDuration))) {
// INT64_MAX is used as infinity by the state machine.
// We want a very bigger number, but not infinity.
checkedDuration = INT64_MAX - 1;
}
GetStateMachine()->SetDuration(checkedDuration);
mMediaSourceDuration = aDuration;
} else {
GetStateMachine()->SetDuration(INT64_MAX);
mMediaSourceDuration = PositiveInfinity<double>();
}
if (mReader) {
mReader->SetMediaSourceDuration(mMediaSourceDuration);
}
ScheduleDurationChange(oldDuration, aDuration, aAction);
}
nsresult
DASHRepDecoder::GetByteRangeForSeek(int64_t const aOffset,
MediaByteRange& aByteRange)
{
NS_ASSERTION(NS_IsMainThread(), "Should be on main thread.");
// Only check data ranges if they're available and if this decoder is active,
// i.e. inactive rep decoders should only load metadata.
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
for (uint32_t i = 0; i < mByteRanges.Length(); i++) {
NS_ENSURE_FALSE(mByteRanges[i].IsNull(), NS_ERROR_NOT_INITIALIZED);
// Check if |aOffset| lies within the current data range.
if (mByteRanges[i].mStart <= aOffset && aOffset <= mByteRanges[i].mEnd) {
if (mMainDecoder->IsDecoderAllowedToDownloadSubsegment(this, i)) {
mCurrentByteRange = aByteRange = mByteRanges[i];
mSubsegmentIdx = i;
// XXX Hack: should be setting subsegment outside this function, but
// need to review seeking for multiple switches anyhow.
mMainDecoder->SetSubsegmentIndex(this, i);
LOG("Getting DATA range [%d] for seek offset [%lld]: "
"bytes [%lld] to [%lld]",
i, aOffset, aByteRange.mStart, aByteRange.mEnd);
return NS_OK;
}
break;
}
}
// Don't allow metadata downloads once they're loaded and byte ranges have
// been populated.
bool canDownloadMetadata = mByteRanges.IsEmpty();
if (canDownloadMetadata) {
// Check metadata ranges; init range.
if (mInitByteRange.mStart <= aOffset && aOffset <= mInitByteRange.mEnd) {
mCurrentByteRange = aByteRange = mInitByteRange;
mSubsegmentIdx = 0;
LOG("Getting INIT range for seek offset [%lld]: bytes [%lld] to "
"[%lld]", aOffset, aByteRange.mStart, aByteRange.mEnd);
return NS_OK;
}
// ... index range.
if (mIndexByteRange.mStart <= aOffset && aOffset <= mIndexByteRange.mEnd) {
mCurrentByteRange = aByteRange = mIndexByteRange;
mSubsegmentIdx = 0;
LOG("Getting INDEXES range for seek offset [%lld]: bytes [%lld] to "
"[%lld]", aOffset, aByteRange.mStart, aByteRange.mEnd);
return NS_OK;
}
} else {
LOG1("Metadata should be read; inhibiting further metadata downloads.");
}
// If no byte range is found by this stage, clear the parameter and return.
aByteRange.Clear();
if (mByteRanges.IsEmpty() || !canDownloadMetadata) {
// Assume mByteRanges will be populated after metadata is read.
LOG("Data ranges not populated [%s]; metadata download restricted [%s]: "
"offset[%lld].",
(mByteRanges.IsEmpty() ? "yes" : "no"),
(canDownloadMetadata ? "no" : "yes"), aOffset);
return NS_ERROR_NOT_AVAILABLE;
} else {
// Cannot seek to an unknown offset.
// XXX Revisit this for dynamic MPD profiles if MPD is regularly updated.
LOG("Error! Offset [%lld] is in an unknown range!", aOffset);
return NS_ERROR_ILLEGAL_VALUE;
}
}
DecodedStreamData*
DecodedStream::GetData() const
{
GetReentrantMonitor().AssertCurrentThreadIn();
return mData.get();
}
void
DASHRepDecoder::LoadNextByteRange()
{
NS_ASSERTION(NS_IsMainThread(), "Should be on main thread.");
NS_ASSERTION(mResource, "Error: resource is reported as null!");
// Return silently if shutting down.
if (mShuttingDown) {
LOG1("Shutting down! Ignoring LoadNextByteRange().");
return;
}
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
NS_ASSERTION(mMainDecoder, "Error: main decoder is null!");
NS_ASSERTION(mMainDecoder->IsDecoderAllowedToDownloadData(this),
"Should not be called on non-active decoders!");
// Cannot have empty byte ranges.
if (mByteRanges.IsEmpty()) {
LOG1("Error getting list of subsegment byte ranges.");
DecodeError();
return;
}
// Get byte range for subsegment.
int32_t subsegmentIdx = mMainDecoder->GetSubsegmentIndex(this);
NS_ASSERTION(0 <= subsegmentIdx,
"Subsegment index should be >= 0 for active decoders");
if (subsegmentIdx >= 0 && (uint32_t)subsegmentIdx < mByteRanges.Length()) {
mCurrentByteRange = mByteRanges[subsegmentIdx];
mSubsegmentIdx = subsegmentIdx;
} else {
mCurrentByteRange.Clear();
mSubsegmentIdx = -1;
LOG("End of subsegments: index [%d] out of range.", subsegmentIdx);
return;
}
// Request a seek for the first reader. Required so that the reader is
// primed to start here, and will block subsequent subsegment seeks unless
// the subsegment has been read.
if (subsegmentIdx == 0) {
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
mReader->RequestSeekToSubsegment(0);
}
// Query resource for cached ranges; only download if it's not there.
if (IsSubsegmentCached(mSubsegmentIdx)) {
LOG("Subsegment [%d] bytes [%lld] to [%lld] already cached. No need to "
"download.", mSubsegmentIdx,
mCurrentByteRange.mStart, mCurrentByteRange.mEnd);
nsCOMPtr<nsIRunnable> event =
NS_NewRunnableMethod(this, &DASHRepDecoder::DoNotifyDownloadEnded);
nsresult rv = NS_DispatchToMainThread(event);
if (NS_FAILED(rv)) {
LOG("Error notifying subsegment [%d] cached: rv[0x%x].",
mSubsegmentIdx, rv);
NetworkError();
}
return;
}
// Open byte range corresponding to subsegment.
nsresult rv = mResource->OpenByteRange(nullptr, mCurrentByteRange);
if (NS_FAILED(rv)) {
LOG("Error opening byte range [%lld - %lld]: subsegmentIdx [%d] rv [%x].",
mCurrentByteRange.mStart, mCurrentByteRange.mEnd, mSubsegmentIdx, rv);
NetworkError();
return;
}
}
nsTArray<OutputStreamData>&
DecodedStream::OutputStreams()
{
GetReentrantMonitor().AssertCurrentThreadIn();
return mOutputStreams;
}
void
MediaOmxCommonDecoder::SetPlatformCanOffloadAudio(bool aCanOffloadAudio)
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
mCanOffloadAudio = aCanOffloadAudio;
}
double
MediaSourceDecoder::GetDuration()
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
return ExplicitDuration();
}
void
MediaSourceDecoder::NotifyTimeRangesChanged()
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
mon.NotifyAll();
}
bool
MediaSourceDecoder::IsExpectingMoreData()
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
return !mReader->IsEnded();
}
double
MediaSourceDecoder::GetMediaSourceDuration()
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
return mMediaSourceDuration;
}
void
AudioSink::AudioLoop()
{
AssertOnAudioThread();
SINK_LOG("AudioLoop started");
if (NS_FAILED(InitializeAudioStream())) {
NS_WARNING("Initializing AudioStream failed.");
mStateMachine->DispatchOnAudioSinkError();
return;
}
while (1) {
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
WaitForAudioToPlay();
if (!IsPlaybackContinuing()) {
break;
}
}
// See if there's a gap in the audio. If there is, push silence into the
// audio hardware, so we can play across the gap.
// Calculate the timestamp of the next chunk of audio in numbers of
// samples.
NS_ASSERTION(AudioQueue().GetSize() > 0, "Should have data to play");
CheckedInt64 sampleTime = UsecsToFrames(AudioQueue().PeekFront()->mTime, mInfo.mRate);
// Calculate the number of frames that have been pushed onto the audio hardware.
CheckedInt64 playedFrames = UsecsToFrames(mStartTime, mInfo.mRate) +
static_cast<int64_t>(mWritten);
CheckedInt64 missingFrames = sampleTime - playedFrames;
if (!missingFrames.isValid() || !sampleTime.isValid()) {
NS_WARNING("Int overflow adding in AudioLoop");
break;
}
if (missingFrames.value() > AUDIO_FUZZ_FRAMES) {
// The next audio chunk begins some time after the end of the last chunk
// we pushed to the audio hardware. We must push silence into the audio
// hardware so that the next audio chunk begins playback at the correct
// time.
missingFrames = std::min<int64_t>(UINT32_MAX, missingFrames.value());
mWritten += PlaySilence(static_cast<uint32_t>(missingFrames.value()));
} else {
mWritten += PlayFromAudioQueue();
}
int64_t endTime = GetEndTime();
if (endTime != -1) {
mOnAudioEndTimeUpdateTask->Dispatch(endTime);
}
}
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
MOZ_ASSERT(mStopAudioThread || AudioQueue().AtEndOfStream());
if (!mStopAudioThread && mPlaying) {
Drain();
}
SINK_LOG("AudioLoop complete");
Cleanup();
SINK_LOG("AudioLoop exit");
}
