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gecko-dev/content/media/MediaDecoder.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "MediaDecoder.h"
#include "mozilla/FloatingPoint.h"
#include "mozilla/MathAlgorithms.h"
#include <limits>
#include "nsIObserver.h"
#include "nsTArray.h"
#include "VideoUtils.h"
#include "MediaDecoderStateMachine.h"
#include "mozilla/dom/TimeRanges.h"
#include "nsContentUtils.h"
#include "ImageContainer.h"
#include "MediaResource.h"
#include "nsError.h"
#include "mozilla/Preferences.h"
#include "nsIMemoryReporter.h"
#include "nsComponentManagerUtils.h"
#include "nsITimer.h"
#include <algorithm>
#ifdef MOZ_WMF
#include "WMFDecoder.h"
#endif
using namespace mozilla::layers;
using namespace mozilla::dom;
namespace mozilla {
// Number of milliseconds between progress events as defined by spec
static const uint32_t PROGRESS_MS = 350;
// Number of milliseconds of no data before a stall event is fired as defined by spec
static const uint32_t STALL_MS = 3000;
// Number of estimated seconds worth of data we need to have buffered
// ahead of the current playback position before we allow the media decoder
// to report that it can play through the entire media without the decode
// catching up with the download. Having this margin make the
// MediaDecoder::CanPlayThrough() calculation more stable in the case of
// fluctuating bitrates.
static const int64_t CAN_PLAY_THROUGH_MARGIN = 1;
#ifdef PR_LOGGING
PRLogModuleInfo* gMediaDecoderLog;
#define LOG(type, msg) PR_LOG(gMediaDecoderLog, type, msg)
#else
#define LOG(type, msg)
#endif
class MediaMemoryTracker
{
MediaMemoryTracker();
~MediaMemoryTracker();
static MediaMemoryTracker* sUniqueInstance;
static MediaMemoryTracker* UniqueInstance() {
if (!sUniqueInstance) {
sUniqueInstance = new MediaMemoryTracker();
}
return sUniqueInstance;
}
typedef nsTArray<MediaDecoder*> DecodersArray;
static DecodersArray& Decoders() {
return UniqueInstance()->mDecoders;
}
DecodersArray mDecoders;
nsCOMPtr<nsIMemoryReporter> mReporter;
public:
static void AddMediaDecoder(MediaDecoder* aDecoder)
{
Decoders().AppendElement(aDecoder);
}
static void RemoveMediaDecoder(MediaDecoder* aDecoder)
{
DecodersArray& decoders = Decoders();
decoders.RemoveElement(aDecoder);
if (decoders.IsEmpty()) {
delete sUniqueInstance;
sUniqueInstance = nullptr;
}
}
static void GetAmounts(int64_t* aVideo, int64_t* aAudio)
{
*aVideo = 0;
*aAudio = 0;
DecodersArray& decoders = Decoders();
for (size_t i = 0; i < decoders.Length(); ++i) {
*aVideo += decoders[i]->VideoQueueMemoryInUse();
*aAudio += decoders[i]->AudioQueueMemoryInUse();
}
}
};
MediaMemoryTracker* MediaMemoryTracker::sUniqueInstance = nullptr;
NS_IMPL_ISUPPORTS1(MediaDecoder, nsIObserver)
void MediaDecoder::SetDormantIfNecessary(bool aDormant)
{
MOZ_ASSERT(NS_IsMainThread());
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
if (!mDecoderStateMachine || !mDecoderStateMachine->IsDormantNeeded() || (mPlayState == PLAY_STATE_SHUTDOWN)) {
return;
}
if (mIsDormant == aDormant) {
// no change to dormant state
return;
}
if(aDormant) {
// enter dormant state
StopProgress();
DestroyDecodedStream();
mDecoderStateMachine->SetDormant(true);
mRequestedSeekTime = mCurrentTime;
if (mPlayState == PLAY_STATE_PLAYING){
mNextState = PLAY_STATE_PLAYING;
} else {
mNextState = PLAY_STATE_PAUSED;
}
mNextState = mPlayState;
mIsDormant = true;
mIsExitingDormant = false;
ChangeState(PLAY_STATE_LOADING);
} else if ((aDormant != true) && (mPlayState == PLAY_STATE_LOADING)) {
// exit dormant state
// trigger to state machine.
mDecoderStateMachine->SetDormant(false);
mIsExitingDormant = true;
}
}
void MediaDecoder::Pause()
{
MOZ_ASSERT(NS_IsMainThread());
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
if ((mPlayState == PLAY_STATE_LOADING && mIsDormant) || mPlayState == PLAY_STATE_SEEKING || mPlayState == PLAY_STATE_ENDED) {
mNextState = PLAY_STATE_PAUSED;
return;
}
ChangeState(PLAY_STATE_PAUSED);
}
void MediaDecoder::SetVolume(double aVolume)
{
MOZ_ASSERT(NS_IsMainThread());
mInitialVolume = aVolume;
if (mDecoderStateMachine) {
mDecoderStateMachine->SetVolume(aVolume);
}
}
void MediaDecoder::SetAudioCaptured(bool aCaptured)
{
MOZ_ASSERT(NS_IsMainThread());
mInitialAudioCaptured = aCaptured;
if (mDecoderStateMachine) {
mDecoderStateMachine->SetAudioCaptured(aCaptured);
}
}
void MediaDecoder::ConnectDecodedStreamToOutputStream(OutputStreamData* aStream)
{
NS_ASSERTION(!aStream->mPort, "Already connected?");
// The output stream must stay in sync with the decoded stream, so if
// either stream is blocked, we block the other.
aStream->mPort = aStream->mStream->AllocateInputPort(mDecodedStream->mStream,
MediaInputPort::FLAG_BLOCK_INPUT | MediaInputPort::FLAG_BLOCK_OUTPUT);
// Unblock the output stream now. While it's connected to mDecodedStream,
// mDecodedStream is responsible for controlling blocking.
aStream->mStream->ChangeExplicitBlockerCount(-1);
}
MediaDecoder::DecodedStreamData::DecodedStreamData(MediaDecoder* aDecoder,
int64_t aInitialTime,
SourceMediaStream* aStream)
: mLastAudioPacketTime(-1),
mLastAudioPacketEndTime(-1),
mAudioFramesWritten(0),
mInitialTime(aInitialTime),
mNextVideoTime(aInitialTime),
mDecoder(aDecoder),
mStreamInitialized(false),
mHaveSentFinish(false),
mHaveSentFinishAudio(false),
mHaveSentFinishVideo(false),
mStream(aStream),
mHaveBlockedForPlayState(false)
{
mStream->AddMainThreadListener(this);
}
MediaDecoder::DecodedStreamData::~DecodedStreamData()
{
mStream->RemoveMainThreadListener(this);
mStream->Destroy();
}
void
MediaDecoder::DecodedStreamData::NotifyMainThreadStateChanged()
{
mDecoder->NotifyDecodedStreamMainThreadStateChanged();
}
void MediaDecoder::DestroyDecodedStream()
{
MOZ_ASSERT(NS_IsMainThread());
GetReentrantMonitor().AssertCurrentThreadIn();
// All streams are having their SourceMediaStream disconnected, so they
// need to be explicitly blocked again.
for (int32_t i = mOutputStreams.Length() - 1; i >= 0; --i) {
OutputStreamData& os = mOutputStreams[i];
// During cycle collection, nsDOMMediaStream can be destroyed and send
// its Destroy message before this decoder is destroyed. So we have to
// be careful not to send any messages after the Destroy().
if (os.mStream->IsDestroyed()) {
// Probably the DOM MediaStream was GCed. Clean up.
os.mPort->Destroy();
mOutputStreams.RemoveElementAt(i);
continue;
}
os.mStream->ChangeExplicitBlockerCount(1);
// Explicitly remove all existing ports. This is not strictly necessary but it's
// good form.
os.mPort->Destroy();
os.mPort = nullptr;
}
mDecodedStream = nullptr;
}
void MediaDecoder::RecreateDecodedStream(int64_t aStartTimeUSecs)
{
MOZ_ASSERT(NS_IsMainThread());
GetReentrantMonitor().AssertCurrentThreadIn();
LOG(PR_LOG_DEBUG, ("MediaDecoder::RecreateDecodedStream this=%p aStartTimeUSecs=%lld!",
this, (long long)aStartTimeUSecs));
DestroyDecodedStream();
mDecodedStream = new DecodedStreamData(this, aStartTimeUSecs,
MediaStreamGraph::GetInstance()->CreateSourceStream(nullptr));
// Note that the delay between removing ports in DestroyDecodedStream
// and adding new ones won't cause a glitch since all graph operations
// between main-thread stable states take effect atomically.
for (int32_t i = mOutputStreams.Length() - 1; i >= 0; --i) {
OutputStreamData& os = mOutputStreams[i];
if (os.mStream->IsDestroyed()) {
// Probably the DOM MediaStream was GCed. Clean up.
// No need to destroy the port; all ports have been destroyed here.
mOutputStreams.RemoveElementAt(i);
continue;
}
ConnectDecodedStreamToOutputStream(&os);
}
mDecodedStream->mHaveBlockedForPlayState = mPlayState != PLAY_STATE_PLAYING;
if (mDecodedStream->mHaveBlockedForPlayState) {
mDecodedStream->mStream->ChangeExplicitBlockerCount(1);
}
}
void MediaDecoder::NotifyDecodedStreamMainThreadStateChanged()
{
if (mTriggerPlaybackEndedWhenSourceStreamFinishes && mDecodedStream &&
mDecodedStream->mStream->IsFinished()) {
mTriggerPlaybackEndedWhenSourceStreamFinishes = false;
if (GetState() == PLAY_STATE_PLAYING) {
nsCOMPtr<nsIRunnable> event =
NS_NewRunnableMethod(this, &MediaDecoder::PlaybackEnded);
NS_DispatchToCurrentThread(event);
}
}
}
void MediaDecoder::AddOutputStream(ProcessedMediaStream* aStream,
bool aFinishWhenEnded)
{
MOZ_ASSERT(NS_IsMainThread());
LOG(PR_LOG_DEBUG, ("MediaDecoder::AddOutputStream this=%p aStream=%p!",
this, aStream));
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
if (!mDecodedStream) {
RecreateDecodedStream(mDecoderStateMachine ?
int64_t(mDecoderStateMachine->GetCurrentTime()*USECS_PER_S) : 0);
}
OutputStreamData* os = mOutputStreams.AppendElement();
os->Init(aStream, aFinishWhenEnded);
ConnectDecodedStreamToOutputStream(os);
if (aFinishWhenEnded) {
// Ensure that aStream finishes the moment mDecodedStream does.
aStream->SetAutofinish(true);
}
}
// This can be called before Load(), in which case our mDecoderStateMachine
// won't have been created yet and we can rely on Load() to schedule it
// once it is created.
if (mDecoderStateMachine) {
// Make sure the state machine thread runs so that any buffered data
// is fed into our stream.
ScheduleStateMachineThread();
}
}
double MediaDecoder::GetDuration()
{
MOZ_ASSERT(NS_IsMainThread());
if (mInfiniteStream) {
return std::numeric_limits<double>::infinity();
}
if (mDuration >= 0) {
return static_cast<double>(mDuration) / static_cast<double>(USECS_PER_S);
}
return std::numeric_limits<double>::quiet_NaN();
}
int64_t MediaDecoder::GetMediaDuration()
{
NS_ENSURE_TRUE(GetStateMachine(), -1);
return GetStateMachine()->GetDuration();
}
void MediaDecoder::SetInfinite(bool aInfinite)
{
MOZ_ASSERT(NS_IsMainThread());
mInfiniteStream = aInfinite;
}
bool MediaDecoder::IsInfinite()
{
MOZ_ASSERT(NS_IsMainThread());
return mInfiniteStream;
}
MediaDecoder::MediaDecoder() :
mDecoderPosition(0),
mPlaybackPosition(0),
mCurrentTime(0.0),
mInitialVolume(0.0),
mInitialPlaybackRate(1.0),
mInitialPreservesPitch(true),
mDuration(-1),
mTransportSeekable(true),
mMediaSeekable(true),
mSameOriginMedia(false),
mReentrantMonitor("media.decoder"),
mIsDormant(false),
mIsExitingDormant(false),
mPlayState(PLAY_STATE_PAUSED),
mNextState(PLAY_STATE_PAUSED),
mRequestedSeekTime(-1.0),
mCalledResourceLoaded(false),
mIgnoreProgressData(false),
mInfiniteStream(false),
mTriggerPlaybackEndedWhenSourceStreamFinishes(false),
mOwner(nullptr),
mFrameBufferLength(0),
mPinnedForSeek(false),
mShuttingDown(false),
mPausedForPlaybackRateNull(false),
mAudioChannelType(AUDIO_CHANNEL_NORMAL)
{
MOZ_COUNT_CTOR(MediaDecoder);
MOZ_ASSERT(NS_IsMainThread());
MediaMemoryTracker::AddMediaDecoder(this);
#ifdef PR_LOGGING
if (!gMediaDecoderLog) {
gMediaDecoderLog = PR_NewLogModule("MediaDecoder");
}
#endif
}
bool MediaDecoder::Init(MediaDecoderOwner* aOwner)
{
MOZ_ASSERT(NS_IsMainThread());
mOwner = aOwner;
mVideoFrameContainer = aOwner->GetVideoFrameContainer();
nsContentUtils::RegisterShutdownObserver(this);
return true;
}
void MediaDecoder::Shutdown()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown)
return;
mShuttingDown = true;
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
DestroyDecodedStream();
}
// This changes the decoder state to SHUTDOWN and does other things
// necessary to unblock the state machine thread if it's blocked, so
// the asynchronous shutdown in nsDestroyStateMachine won't deadlock.
if (mDecoderStateMachine) {
mDecoderStateMachine->Shutdown();
}
// Force any outstanding seek and byterange requests to complete
// to prevent shutdown from deadlocking.
if (mResource) {
mResource->Close();
}
ChangeState(PLAY_STATE_SHUTDOWN);
StopProgress();
mOwner = nullptr;
nsContentUtils::UnregisterShutdownObserver(this);
}
MediaDecoder::~MediaDecoder()
{
MOZ_ASSERT(NS_IsMainThread());
MediaMemoryTracker::RemoveMediaDecoder(this);
UnpinForSeek();
MOZ_COUNT_DTOR(MediaDecoder);
}
nsresult MediaDecoder::OpenResource(nsIStreamListener** aStreamListener)
{
MOZ_ASSERT(NS_IsMainThread());
if (aStreamListener) {
*aStreamListener = nullptr;
}
{
// Hold the lock while we do this to set proper lock ordering
// expectations for dynamic deadlock detectors: decoder lock(s)
// should be grabbed before the cache lock
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
nsresult rv = mResource->Open(aStreamListener);
if (NS_FAILED(rv)) {
LOG(PR_LOG_DEBUG, ("%p Failed to open stream!", this));
return rv;
}
}
return NS_OK;
}
nsresult MediaDecoder::Load(nsIStreamListener** aStreamListener,
MediaDecoder* aCloneDonor)
{
MOZ_ASSERT(NS_IsMainThread());
nsresult rv = OpenResource(aStreamListener);
NS_ENSURE_SUCCESS(rv, rv);
mDecoderStateMachine = CreateStateMachine();
if (!mDecoderStateMachine) {
LOG(PR_LOG_DEBUG, ("%p Failed to create state machine!", this));
return NS_ERROR_FAILURE;
}
return InitializeStateMachine(aCloneDonor);
}
nsresult MediaDecoder::InitializeStateMachine(MediaDecoder* aCloneDonor)
{
MOZ_ASSERT(NS_IsMainThread());
NS_ASSERTION(mDecoderStateMachine, "Cannot initialize null state machine!");
MediaDecoder* cloneDonor = static_cast<MediaDecoder*>(aCloneDonor);
if (NS_FAILED(mDecoderStateMachine->Init(cloneDonor ?
cloneDonor->mDecoderStateMachine : nullptr))) {
LOG(PR_LOG_DEBUG, ("%p Failed to init state machine!", this));
return NS_ERROR_FAILURE;
}
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
mDecoderStateMachine->SetTransportSeekable(mTransportSeekable);
mDecoderStateMachine->SetMediaSeekable(mMediaSeekable);
mDecoderStateMachine->SetDuration(mDuration);
mDecoderStateMachine->SetVolume(mInitialVolume);
mDecoderStateMachine->SetAudioCaptured(mInitialAudioCaptured);
SetPlaybackRate(mInitialPlaybackRate);
mDecoderStateMachine->SetPreservesPitch(mInitialPreservesPitch);
if (mFrameBufferLength > 0) {
// The valid mFrameBufferLength value was specified earlier
mDecoderStateMachine->SetFrameBufferLength(mFrameBufferLength);
}
}
ChangeState(PLAY_STATE_LOADING);
return ScheduleStateMachineThread();
}
nsresult MediaDecoder::RequestFrameBufferLength(uint32_t aLength)
{
if (aLength < FRAMEBUFFER_LENGTH_MIN || aLength > FRAMEBUFFER_LENGTH_MAX) {
return NS_ERROR_DOM_INDEX_SIZE_ERR;
}
mFrameBufferLength = aLength;
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
if (mDecoderStateMachine) {
mDecoderStateMachine->SetFrameBufferLength(aLength);
}
return NS_OK;
}
nsresult MediaDecoder::ScheduleStateMachineThread()
{
MOZ_ASSERT(NS_IsMainThread());
NS_ASSERTION(mDecoderStateMachine,
"Must have state machine to start state machine thread");
NS_ENSURE_STATE(mDecoderStateMachine);
if (mShuttingDown)
return NS_OK;
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
MediaDecoderStateMachine* m =
static_cast<MediaDecoderStateMachine*>(mDecoderStateMachine.get());
return m->ScheduleStateMachine();
}
nsresult MediaDecoder::Play()
{
MOZ_ASSERT(NS_IsMainThread());
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
NS_ASSERTION(mDecoderStateMachine != nullptr, "Should have state machine.");
nsresult res = ScheduleStateMachineThread();
NS_ENSURE_SUCCESS(res,res);
if ((mPlayState == PLAY_STATE_LOADING && mIsDormant) || mPlayState == PLAY_STATE_SEEKING) {
mNextState = PLAY_STATE_PLAYING;
return NS_OK;
}
if (mPlayState == PLAY_STATE_ENDED)
return Seek(0);
ChangeState(PLAY_STATE_PLAYING);
return NS_OK;
}
/**
* Returns true if aValue is inside a range of aRanges, and put the range
* index in aIntervalIndex if it is not null.
* If aValue is not inside a range, false is returned, and aIntervalIndex, if
* not null, is set to the index of the range which ends immediately before aValue
* (and can be -1 if aValue is before aRanges.Start(0)).
*/
static bool
IsInRanges(TimeRanges& aRanges, double aValue, int32_t& aIntervalIndex)
{
uint32_t length;
aRanges.GetLength(&length);
for (uint32_t i = 0; i < length; i++) {
double start, end;
aRanges.Start(i, &start);
if (start > aValue) {
aIntervalIndex = i - 1;
return false;
}
aRanges.End(i, &end);
if (aValue <= end) {
aIntervalIndex = i;
return true;
}
}
aIntervalIndex = length - 1;
return false;
}
nsresult MediaDecoder::Seek(double aTime)
{
MOZ_ASSERT(NS_IsMainThread());
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
NS_ABORT_IF_FALSE(aTime >= 0.0, "Cannot seek to a negative value.");
TimeRanges seekable;
nsresult res;
uint32_t length = 0;
res = GetSeekable(&seekable);
NS_ENSURE_SUCCESS(res, NS_OK);
seekable.GetLength(&length);
if (!length) {
return NS_OK;
}
// If the position we want to seek to is not in a seekable range, we seek
// to the closest position in the seekable ranges instead. If two positions
// are equally close, we seek to the closest position from the currentTime.
// See seeking spec, point 7 :
// http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#seeking
int32_t range = 0;
if (!IsInRanges(seekable, aTime, range)) {
if (range != -1) {
// |range + 1| can't be negative, because the only possible negative value
// for |range| is -1.
if (uint32_t(range + 1) < length) {
double leftBound, rightBound;
res = seekable.End(range, &leftBound);
NS_ENSURE_SUCCESS(res, NS_OK);
res = seekable.Start(range + 1, &rightBound);
NS_ENSURE_SUCCESS(res, NS_OK);
double distanceLeft = Abs(leftBound - aTime);
double distanceRight = Abs(rightBound - aTime);
if (distanceLeft == distanceRight) {
distanceLeft = Abs(leftBound - mCurrentTime);
distanceRight = Abs(rightBound - mCurrentTime);
}
aTime = (distanceLeft < distanceRight) ? leftBound : rightBound;
} else {
// Seek target is after the end last range in seekable data.
// Clamp the seek target to the end of the last seekable range.
res = seekable.End(length - 1, &aTime);
NS_ENSURE_SUCCESS(res, NS_OK);
}
} else {
// aTime is before the first range in |seekable|, the closest point we can
// seek to is the start of the first range.
seekable.Start(0, &aTime);
}
}
mRequestedSeekTime = aTime;
mCurrentTime = aTime;
// If we are already in the seeking state, then setting mRequestedSeekTime
// above will result in the new seek occurring when the current seek
// completes.
if ((mPlayState != PLAY_STATE_LOADING || !mIsDormant) && mPlayState != PLAY_STATE_SEEKING) {
bool paused = false;
if (mOwner) {
paused = mOwner->GetPaused();
}
mNextState = paused ? PLAY_STATE_PAUSED : PLAY_STATE_PLAYING;
PinForSeek();
ChangeState(PLAY_STATE_SEEKING);
}
return ScheduleStateMachineThread();
}
double MediaDecoder::GetCurrentTime()
{
MOZ_ASSERT(NS_IsMainThread());
return mCurrentTime;
}
already_AddRefed<nsIPrincipal> MediaDecoder::GetCurrentPrincipal()
{
MOZ_ASSERT(NS_IsMainThread());
return mResource ? mResource->GetCurrentPrincipal() : nullptr;
}
void MediaDecoder::AudioAvailable(float* aFrameBuffer,
uint32_t aFrameBufferLength,
float aTime)
{
// Auto manage the frame buffer's memory. If we return due to an error
// here, this ensures we free the memory. Otherwise, we pass off ownership
// to HTMLMediaElement::NotifyAudioAvailable().
nsAutoArrayPtr<float> frameBuffer(aFrameBuffer);
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown || !mOwner) {
return;
}
mOwner->NotifyAudioAvailable(frameBuffer.forget(), aFrameBufferLength, aTime);
}
void MediaDecoder::QueueMetadata(int64_t aPublishTime,
int aChannels,
int aRate,
bool aHasAudio,
bool aHasVideo,
MetadataTags* aTags)
{
NS_ASSERTION(OnDecodeThread(), "Should be on decode thread.");
GetReentrantMonitor().AssertCurrentThreadIn();
mDecoderStateMachine->QueueMetadata(aPublishTime, aChannels, aRate, aHasAudio, aHasVideo, aTags);
}
bool
MediaDecoder::IsDataCachedToEndOfResource()
{
NS_ASSERTION(!mShuttingDown, "Don't call during shutdown!");
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
return (mResource &&
mResource->IsDataCachedToEndOfResource(mDecoderPosition));
}
void MediaDecoder::MetadataLoaded(int aChannels, int aRate, bool aHasAudio, bool aHasVideo, MetadataTags* aTags)
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown) {
return;
}
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
if (mPlayState == PLAY_STATE_LOADING && mIsDormant && !mIsExitingDormant) {
return;
} else if (mPlayState == PLAY_STATE_LOADING && mIsDormant && mIsExitingDormant) {
mIsDormant = false;
mIsExitingDormant = false;
}
mDuration = mDecoderStateMachine ? mDecoderStateMachine->GetDuration() : -1;
// Duration has changed so we should recompute playback rate
UpdatePlaybackRate();
}
if (mDuration == -1) {
SetInfinite(true);
}
if (mOwner) {
// Make sure the element and the frame (if any) are told about
// our new size.
Invalidate();
mOwner->MetadataLoaded(aChannels, aRate, aHasAudio, aHasVideo, aTags);
}
if (!mCalledResourceLoaded) {
StartProgress();
} else if (mOwner) {
// Resource was loaded during metadata loading, when progress
// events are being ignored. Fire the final progress event.
mOwner->DispatchAsyncEvent(NS_LITERAL_STRING("progress"));
}
// Only inform the element of FirstFrameLoaded if not doing a load() in order
// to fulfill a seek, otherwise we'll get multiple loadedfirstframe events.
bool notifyResourceIsLoaded = !mCalledResourceLoaded &&
IsDataCachedToEndOfResource();
if (mOwner) {
mOwner->FirstFrameLoaded(notifyResourceIsLoaded);
}
// This can run cache callbacks.
mResource->EnsureCacheUpToDate();
// The element can run javascript via events
// before reaching here, so only change the
// state if we're still set to the original
// loading state.
if (mPlayState == PLAY_STATE_LOADING) {
if (mRequestedSeekTime >= 0.0) {
ChangeState(PLAY_STATE_SEEKING);
}
else {
ChangeState(mNextState);
}
}
if (notifyResourceIsLoaded) {
ResourceLoaded();
}
// Run NotifySuspendedStatusChanged now to give us a chance to notice
// that autoplay should run.
NotifySuspendedStatusChanged();
}
void MediaDecoder::ResourceLoaded()
{
MOZ_ASSERT(NS_IsMainThread());
// Don't handle ResourceLoaded if we are shutting down, or if
// we need to ignore progress data due to seeking (in the case
// that the seek results in reaching end of file, we get a bogus call
// to ResourceLoaded).
if (mShuttingDown)
return;
{
// If we are seeking or loading then the resource loaded notification we get
// should be ignored, since it represents the end of the seek request.
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
if (mIgnoreProgressData || mCalledResourceLoaded || mPlayState == PLAY_STATE_LOADING)
return;
Progress(false);
mCalledResourceLoaded = true;
StopProgress();
}
// Ensure the final progress event gets fired
if (mOwner) {
mOwner->ResourceLoaded();
}
}
void MediaDecoder::NetworkError()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown)
return;
if (mOwner)
mOwner->NetworkError();
Shutdown();
}
void MediaDecoder::DecodeError()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown)
return;
if (mOwner)
mOwner->DecodeError();
Shutdown();
}
void MediaDecoder::UpdateSameOriginStatus(bool aSameOrigin)
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
mSameOriginMedia = aSameOrigin;
}
bool MediaDecoder::IsSameOriginMedia()
{
GetReentrantMonitor().AssertCurrentThreadIn();
return mSameOriginMedia;
}
bool MediaDecoder::IsSeeking() const
{
MOZ_ASSERT(NS_IsMainThread());
return mPlayState == PLAY_STATE_SEEKING;
}
bool MediaDecoder::IsEnded() const
{
MOZ_ASSERT(NS_IsMainThread());
return mPlayState == PLAY_STATE_ENDED || mPlayState == PLAY_STATE_SHUTDOWN;
}
void MediaDecoder::PlaybackEnded()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown || mPlayState == MediaDecoder::PLAY_STATE_SEEKING)
return;
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
if (mDecodedStream && !mDecodedStream->mStream->IsFinished()) {
// Wait for it to finish before firing PlaybackEnded()
mTriggerPlaybackEndedWhenSourceStreamFinishes = true;
return;
}
for (int32_t i = mOutputStreams.Length() - 1; i >= 0; --i) {
OutputStreamData& os = mOutputStreams[i];
if (os.mStream->IsDestroyed()) {
// Probably the DOM MediaStream was GCed. Clean up.
os.mPort->Destroy();
mOutputStreams.RemoveElementAt(i);
continue;
}
if (os.mFinishWhenEnded) {
// Shouldn't really be needed since mDecodedStream should already have
// finished, but doesn't hurt.
os.mStream->Finish();
os.mPort->Destroy();
// Not really needed but it keeps the invariant that a stream not
// connected to mDecodedStream is explicity blocked.
os.mStream->ChangeExplicitBlockerCount(1);
mOutputStreams.RemoveElementAt(i);
}
}
}
PlaybackPositionChanged();
ChangeState(PLAY_STATE_ENDED);
InvalidateWithFlags(VideoFrameContainer::INVALIDATE_FORCE);
UpdateReadyStateForData();
if (mOwner) {
mOwner->PlaybackEnded();
}
// This must be called after |mOwner->PlaybackEnded()| call above, in order
// to fire the required durationchange.
if (IsInfinite()) {
SetInfinite(false);
}
}
NS_IMETHODIMP MediaDecoder::Observe(nsISupports *aSubjet,
const char *aTopic,
const PRUnichar *someData)
{
MOZ_ASSERT(NS_IsMainThread());
if (strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID) == 0) {
Shutdown();
}
return NS_OK;
}
MediaDecoder::Statistics
MediaDecoder::GetStatistics()
{
MOZ_ASSERT(NS_IsMainThread() || OnStateMachineThread());
Statistics result;
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
if (mResource) {
result.mDownloadRate =
mResource->GetDownloadRate(&result.mDownloadRateReliable);
result.mDownloadPosition =
mResource->GetCachedDataEnd(mDecoderPosition);
result.mTotalBytes = mResource->GetLength();
result.mPlaybackRate = ComputePlaybackRate(&result.mPlaybackRateReliable);
result.mDecoderPosition = mDecoderPosition;
result.mPlaybackPosition = mPlaybackPosition;
}
else {
result.mDownloadRate = 0;
result.mDownloadRateReliable = true;
result.mPlaybackRate = 0;
result.mPlaybackRateReliable = true;
result.mDecoderPosition = 0;
result.mPlaybackPosition = 0;
result.mDownloadPosition = 0;
result.mTotalBytes = 0;
}
return result;
}
double MediaDecoder::ComputePlaybackRate(bool* aReliable)
{
GetReentrantMonitor().AssertCurrentThreadIn();
MOZ_ASSERT(NS_IsMainThread() || OnStateMachineThread());
int64_t length = mResource ? mResource->GetLength() : -1;
if (mDuration >= 0 && length >= 0) {
*aReliable = true;
return length * static_cast<double>(USECS_PER_S) / mDuration;
}
return mPlaybackStatistics.GetRateAtLastStop(aReliable);
}
void MediaDecoder::UpdatePlaybackRate()
{
MOZ_ASSERT(NS_IsMainThread() || OnStateMachineThread());
GetReentrantMonitor().AssertCurrentThreadIn();
if (!mResource)
return;
bool reliable;
uint32_t rate = uint32_t(ComputePlaybackRate(&reliable));
if (reliable) {
// Avoid passing a zero rate
rate = std::max(rate, 1u);
}
else {
// Set a minimum rate of 10,000 bytes per second ... sometimes we just
// don't have good data
rate = std::max(rate, 10000u);
}
mResource->SetPlaybackRate(rate);
}
void MediaDecoder::NotifySuspendedStatusChanged()
{
MOZ_ASSERT(NS_IsMainThread());
if (!mResource)
return;
bool suspended = mResource->IsSuspendedByCache();
if (mOwner) {
mOwner->NotifySuspendedByCache(suspended);
UpdateReadyStateForData();
}
}
void MediaDecoder::NotifyBytesDownloaded()
{
MOZ_ASSERT(NS_IsMainThread());
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
UpdatePlaybackRate();
}
UpdateReadyStateForData();
Progress(false);
}
void MediaDecoder::NotifyDownloadEnded(nsresult aStatus)
{
MOZ_ASSERT(NS_IsMainThread());
if (aStatus == NS_BINDING_ABORTED) {
// Download has been cancelled by user.
if (mOwner) {
mOwner->LoadAborted();
}
return;
}
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
UpdatePlaybackRate();
}
if (NS_SUCCEEDED(aStatus)) {
ResourceLoaded();
}
else if (aStatus != NS_BASE_STREAM_CLOSED) {
NetworkError();
}
UpdateReadyStateForData();
}
void MediaDecoder::NotifyPrincipalChanged()
{
if (mOwner) {
mOwner->NotifyDecoderPrincipalChanged();
}
}
void MediaDecoder::NotifyBytesConsumed(int64_t aBytes, int64_t aOffset)
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
NS_ENSURE_TRUE_VOID(mDecoderStateMachine);
if (mIgnoreProgressData) {
return;
}
if (aOffset >= mDecoderPosition) {
mPlaybackStatistics.AddBytes(aBytes);
}
mDecoderPosition = aOffset + aBytes;
}
void MediaDecoder::UpdateReadyStateForData()
{
MOZ_ASSERT(NS_IsMainThread());
if (!mOwner || mShuttingDown || !mDecoderStateMachine)
return;
MediaDecoderOwner::NextFrameStatus frameStatus =
mDecoderStateMachine->GetNextFrameStatus();
mOwner->UpdateReadyStateForData(frameStatus);
}
void MediaDecoder::SeekingStopped()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown)
return;
bool seekWasAborted = false;
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
// An additional seek was requested while the current seek was
// in operation.
if (mRequestedSeekTime >= 0.0) {
ChangeState(PLAY_STATE_SEEKING);
seekWasAborted = true;
} else {
UnpinForSeek();
ChangeState(mNextState);
}
}
if (mOwner) {
UpdateReadyStateForData();
if (!seekWasAborted) {
mOwner->SeekCompleted();
}
}
}
// This is called when seeking stopped *and* we're at the end of the
// media.
void MediaDecoder::SeekingStoppedAtEnd()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown)
return;
bool fireEnded = false;
bool seekWasAborted = false;
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
// An additional seek was requested while the current seek was
// in operation.
if (mRequestedSeekTime >= 0.0) {
ChangeState(PLAY_STATE_SEEKING);
seekWasAborted = true;
} else {
UnpinForSeek();
fireEnded = true;
ChangeState(PLAY_STATE_ENDED);
}
}
if (mOwner) {
UpdateReadyStateForData();
if (!seekWasAborted) {
mOwner->SeekCompleted();
if (fireEnded) {
mOwner->PlaybackEnded();
}
}
}
}
void MediaDecoder::SeekingStarted()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown)
return;
if (mOwner) {
UpdateReadyStateForData();
mOwner->SeekStarted();
}
}
void MediaDecoder::ChangeState(PlayState aState)
{
MOZ_ASSERT(NS_IsMainThread());
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
if (mNextState == aState) {
mNextState = PLAY_STATE_PAUSED;
}
if ((mPlayState == PLAY_STATE_LOADING && mIsDormant && aState != PLAY_STATE_SHUTDOWN) ||
mPlayState == PLAY_STATE_SHUTDOWN) {
GetReentrantMonitor().NotifyAll();
return;
}
if (mDecodedStream) {
bool blockForPlayState = aState != PLAY_STATE_PLAYING;
if (mDecodedStream->mHaveBlockedForPlayState != blockForPlayState) {
mDecodedStream->mStream->ChangeExplicitBlockerCount(blockForPlayState ? 1 : -1);
mDecodedStream->mHaveBlockedForPlayState = blockForPlayState;
}
}
mPlayState = aState;
if (mDecoderStateMachine) {
switch (aState) {
case PLAY_STATE_PLAYING:
mDecoderStateMachine->Play();
break;
case PLAY_STATE_SEEKING:
mDecoderStateMachine->Seek(mRequestedSeekTime);
mRequestedSeekTime = -1.0;
break;
default:
/* No action needed */
break;
}
}
if (aState!= PLAY_STATE_LOADING) {
mIsDormant = false;
mIsExitingDormant = false;
}
GetReentrantMonitor().NotifyAll();
}
void MediaDecoder::PlaybackPositionChanged()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown)
return;
double lastTime = mCurrentTime;
// Control the scope of the monitor so it is not
// held while the timeupdate and the invalidate is run.
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
if (mDecoderStateMachine) {
if (!IsSeeking()) {
// Only update the current playback position if we're not seeking.
// If we are seeking, the update could have been scheduled on the
// state machine thread while we were playing but after the seek
// algorithm set the current playback position on the main thread,
// and we don't want to override the seek algorithm and change the
// current time after the seek has started but before it has
// completed.
mCurrentTime = mDecoderStateMachine->GetCurrentTime();
}
mDecoderStateMachine->ClearPositionChangeFlag();
}
}
// Invalidate the frame so any video data is displayed.
// Do this before the timeupdate event so that if that
// event runs JavaScript that queries the media size, the
// frame has reflowed and the size updated beforehand.
Invalidate();
if (mOwner && lastTime != mCurrentTime) {
FireTimeUpdate();
}
}
void MediaDecoder::DurationChanged()
{
MOZ_ASSERT(NS_IsMainThread());
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
int64_t oldDuration = mDuration;
mDuration = mDecoderStateMachine ? mDecoderStateMachine->GetDuration() : -1;
// Duration has changed so we should recompute playback rate
UpdatePlaybackRate();
if (mOwner && oldDuration != mDuration && !IsInfinite()) {
LOG(PR_LOG_DEBUG, ("%p duration changed to %lld", this, mDuration));
mOwner->DispatchEvent(NS_LITERAL_STRING("durationchange"));
}
}
void MediaDecoder::SetDuration(double aDuration)
{
MOZ_ASSERT(NS_IsMainThread());
if (mozilla::IsInfinite(aDuration)) {
SetInfinite(true);
} else if (IsNaN(aDuration)) {
mDuration = -1;
SetInfinite(true);
} else {
mDuration = static_cast<int64_t>(NS_round(aDuration * static_cast<double>(USECS_PER_S)));
}
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
if (mDecoderStateMachine) {
mDecoderStateMachine->SetDuration(mDuration);
}
// Duration has changed so we should recompute playback rate
UpdatePlaybackRate();
}
void MediaDecoder::SetMediaDuration(int64_t aDuration)
{
NS_ENSURE_TRUE_VOID(GetStateMachine());
GetStateMachine()->SetDuration(aDuration);
}
void MediaDecoder::UpdateEstimatedMediaDuration(int64_t aDuration)
{
if (mPlayState <= PLAY_STATE_LOADING) {
return;
}
NS_ENSURE_TRUE_VOID(GetStateMachine());
GetStateMachine()->UpdateEstimatedDuration(aDuration);
}
void MediaDecoder::SetMediaSeekable(bool aMediaSeekable) {
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
MOZ_ASSERT(NS_IsMainThread() || OnDecodeThread());
mMediaSeekable = aMediaSeekable;
if (mDecoderStateMachine) {
mDecoderStateMachine->SetMediaSeekable(aMediaSeekable);
}
}
void MediaDecoder::SetTransportSeekable(bool aTransportSeekable)
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
MOZ_ASSERT(NS_IsMainThread() || OnDecodeThread());
mTransportSeekable = aTransportSeekable;
if (mDecoderStateMachine) {
mDecoderStateMachine->SetTransportSeekable(aTransportSeekable);
}
}
bool MediaDecoder::IsTransportSeekable()
{
MOZ_ASSERT(NS_IsMainThread());
return mTransportSeekable;
}
bool MediaDecoder::IsMediaSeekable()
{
NS_ENSURE_TRUE(GetStateMachine(), false);
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
MOZ_ASSERT(OnDecodeThread() || NS_IsMainThread());
return mMediaSeekable;
}
nsresult MediaDecoder::GetSeekable(TimeRanges* aSeekable)
{
double initialTime = 0.0;
// We can seek in buffered range if the media is seekable. Also, we can seek
// in unbuffered ranges if the transport level is seekable (local file or the
// server supports range requests, etc.)
if (!IsMediaSeekable()) {
return NS_OK;
} else if (!IsTransportSeekable()) {
return GetBuffered(aSeekable);
} else {
double end = IsInfinite() ? std::numeric_limits<double>::infinity()
: initialTime + GetDuration();
aSeekable->Add(initialTime, end);
return NS_OK;
}
}
void MediaDecoder::SetFragmentEndTime(double aTime)
{
MOZ_ASSERT(NS_IsMainThread());
if (mDecoderStateMachine) {
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
mDecoderStateMachine->SetFragmentEndTime(static_cast<int64_t>(aTime * USECS_PER_S));
}
}
void MediaDecoder::SetMediaEndTime(int64_t aTime)
{
NS_ENSURE_TRUE_VOID(GetStateMachine());
GetStateMachine()->SetMediaEndTime(aTime);
}
void MediaDecoder::Suspend()
{
MOZ_ASSERT(NS_IsMainThread());
if (mResource) {
mResource->Suspend(true);
}
}
void MediaDecoder::Resume(bool aForceBuffering)
{
MOZ_ASSERT(NS_IsMainThread());
if (mResource) {
mResource->Resume();
}
if (aForceBuffering) {
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
if (mDecoderStateMachine) {
mDecoderStateMachine->StartBuffering();
}
}
}
void MediaDecoder::StopProgressUpdates()
{
MOZ_ASSERT(OnStateMachineThread() || OnDecodeThread());
GetReentrantMonitor().AssertCurrentThreadIn();
mIgnoreProgressData = true;
if (mResource) {
mResource->SetReadMode(MediaCacheStream::MODE_METADATA);
}
}
void MediaDecoder::StartProgressUpdates()
{
MOZ_ASSERT(OnStateMachineThread() || OnDecodeThread());
GetReentrantMonitor().AssertCurrentThreadIn();
mIgnoreProgressData = false;
if (mResource) {
mResource->SetReadMode(MediaCacheStream::MODE_PLAYBACK);
mDecoderPosition = mPlaybackPosition = mResource->Tell();
}
}
void MediaDecoder::MoveLoadsToBackground()
{
MOZ_ASSERT(NS_IsMainThread());
if (mResource) {
mResource->MoveLoadsToBackground();
}
}
void MediaDecoder::UpdatePlaybackOffset(int64_t aOffset)
{
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
mPlaybackPosition = std::max(aOffset, mPlaybackPosition);
}
bool MediaDecoder::OnStateMachineThread() const
{
return IsCurrentThread(MediaDecoderStateMachine::GetStateMachineThread());
}
void MediaDecoder::NotifyAudioAvailableListener()
{
MOZ_ASSERT(NS_IsMainThread());
if (mDecoderStateMachine) {
ReentrantMonitorAutoEnter mon(GetReentrantMonitor());
mDecoderStateMachine->NotifyAudioAvailableListener();
}
}
void MediaDecoder::SetPlaybackRate(double aPlaybackRate)
{
if (aPlaybackRate == 0) {
mPausedForPlaybackRateNull = true;
Pause();
return;
} else if (mPausedForPlaybackRateNull) {
// If the playbackRate is no longer null, restart the playback, iff the
// media was playing.
if (mOwner && !mOwner->GetPaused()) {
Play();
}
mPausedForPlaybackRateNull = false;
}
if (mDecoderStateMachine) {
mDecoderStateMachine->SetPlaybackRate(aPlaybackRate);
} else {
mInitialPlaybackRate = aPlaybackRate;
}
}
void MediaDecoder::SetPreservesPitch(bool aPreservesPitch)
{
if (mDecoderStateMachine) {
mDecoderStateMachine->SetPreservesPitch(aPreservesPitch);
} else {
mInitialPreservesPitch = aPreservesPitch;
}
}
bool MediaDecoder::OnDecodeThread() const {
NS_WARN_IF_FALSE(mDecoderStateMachine, "mDecoderStateMachine is null");
return mDecoderStateMachine ? mDecoderStateMachine->OnDecodeThread() : false;
}
ReentrantMonitor& MediaDecoder::GetReentrantMonitor() {
return mReentrantMonitor.GetReentrantMonitor();
}
ImageContainer* MediaDecoder::GetImageContainer()
{
return mVideoFrameContainer ? mVideoFrameContainer->GetImageContainer() : nullptr;
}
void MediaDecoder::InvalidateWithFlags(uint32_t aFlags)
{
if (mVideoFrameContainer) {
mVideoFrameContainer->InvalidateWithFlags(aFlags);
}
}
void MediaDecoder::Invalidate()
{
if (mVideoFrameContainer) {
mVideoFrameContainer->Invalidate();
}
}
// Constructs the time ranges representing what segments of the media
// are buffered and playable.
nsresult MediaDecoder::GetBuffered(TimeRanges* aBuffered) {
if (mDecoderStateMachine) {
return mDecoderStateMachine->GetBuffered(aBuffered);
}
return NS_ERROR_FAILURE;
}
int64_t MediaDecoder::VideoQueueMemoryInUse() {
if (mDecoderStateMachine) {
return mDecoderStateMachine->VideoQueueMemoryInUse();
}
return 0;
}
int64_t MediaDecoder::AudioQueueMemoryInUse() {
if (mDecoderStateMachine) {
return mDecoderStateMachine->AudioQueueMemoryInUse();
}
return 0;
}
void MediaDecoder::NotifyDataArrived(const char* aBuffer, uint32_t aLength, int64_t aOffset) {
if (mDecoderStateMachine) {
mDecoderStateMachine->NotifyDataArrived(aBuffer, aLength, aOffset);
}
}
void MediaDecoder::UpdatePlaybackPosition(int64_t aTime)
{
mDecoderStateMachine->UpdatePlaybackPosition(aTime);
}
// Provide access to the state machine object
MediaDecoderStateMachine* MediaDecoder::GetStateMachine() const {
return mDecoderStateMachine;
}
bool MediaDecoder::IsShutdown() const {
NS_ENSURE_TRUE(GetStateMachine(), true);
return GetStateMachine()->IsShutdown();
}
int64_t MediaDecoder::GetEndMediaTime() const {
NS_ENSURE_TRUE(GetStateMachine(), -1);
return GetStateMachine()->GetEndMediaTime();
}
// Drop reference to state machine. Only called during shutdown dance.
void MediaDecoder::ReleaseStateMachine() {
mDecoderStateMachine = nullptr;
}
MediaDecoderOwner* MediaDecoder::GetMediaOwner() const
{
return mOwner;
}
static void ProgressCallback(nsITimer* aTimer, void* aClosure)
{
MediaDecoder* decoder = static_cast<MediaDecoder*>(aClosure);
decoder->Progress(true);
}
void MediaDecoder::Progress(bool aTimer)
{
if (!mOwner)
return;
TimeStamp now = TimeStamp::Now();
if (!aTimer) {
mDataTime = now;
}
// If PROGRESS_MS has passed since the last progress event fired and more
// data has arrived since then, fire another progress event.
if ((mProgressTime.IsNull() ||
now - mProgressTime >= TimeDuration::FromMilliseconds(PROGRESS_MS)) &&
!mDataTime.IsNull() &&
now - mDataTime <= TimeDuration::FromMilliseconds(PROGRESS_MS)) {
mOwner->DispatchAsyncEvent(NS_LITERAL_STRING("progress"));
mProgressTime = now;
}
if (!mDataTime.IsNull() &&
now - mDataTime >= TimeDuration::FromMilliseconds(STALL_MS)) {
mOwner->DownloadStalled();
// Null it out
mDataTime = TimeStamp();
}
}
nsresult MediaDecoder::StartProgress()
{
if (mProgressTimer)
return NS_OK;
mProgressTimer = do_CreateInstance("@mozilla.org/timer;1");
return mProgressTimer->InitWithFuncCallback(ProgressCallback,
this,
PROGRESS_MS,
nsITimer::TYPE_REPEATING_SLACK);
}
nsresult MediaDecoder::StopProgress()
{
if (!mProgressTimer)
return NS_OK;
nsresult rv = mProgressTimer->Cancel();
mProgressTimer = nullptr;
return rv;
}
void MediaDecoder::FireTimeUpdate()
{
if (!mOwner)
return;
mOwner->FireTimeUpdate(true);
}
void MediaDecoder::PinForSeek()
{
MediaResource* resource = GetResource();
if (!resource || mPinnedForSeek) {
return;
}
mPinnedForSeek = true;
resource->Pin();
}
void MediaDecoder::UnpinForSeek()
{
MediaResource* resource = GetResource();
if (!resource || !mPinnedForSeek) {
return;
}
mPinnedForSeek = false;
resource->Unpin();
}
bool MediaDecoder::CanPlayThrough()
{
Statistics stats = GetStatistics();
if (!stats.mDownloadRateReliable || !stats.mPlaybackRateReliable) {
return false;
}
int64_t bytesToDownload = stats.mTotalBytes - stats.mDownloadPosition;
int64_t bytesToPlayback = stats.mTotalBytes - stats.mPlaybackPosition;
double timeToDownload = bytesToDownload / stats.mDownloadRate;
double timeToPlay = bytesToPlayback / stats.mPlaybackRate;
if (timeToDownload > timeToPlay) {
// Estimated time to download is greater than the estimated time to play.
// We probably can't play through without having to stop to buffer.
return false;
}
// Estimated time to download is less than the estimated time to play.
// We can probably play through without having to buffer, but ensure that
// we've got a reasonable amount of data buffered after the current
// playback position, so that if the bitrate of the media fluctuates, or if
// our download rate or decode rate estimation is otherwise inaccurate,
// we don't suddenly discover that we need to buffer. This is particularly
// required near the start of the media, when not much data is downloaded.
int64_t readAheadMargin =
static_cast<int64_t>(stats.mPlaybackRate * CAN_PLAY_THROUGH_MARGIN);
return stats.mTotalBytes == stats.mDownloadPosition ||
stats.mDownloadPosition > stats.mPlaybackPosition + readAheadMargin;
}
#ifdef MOZ_RAW
bool
MediaDecoder::IsRawEnabled()
{
return Preferences::GetBool("media.raw.enabled");
}
#endif
#ifdef MOZ_OGG
bool
MediaDecoder::IsOpusEnabled()
{
#ifdef MOZ_OPUS
return Preferences::GetBool("media.opus.enabled");
#else
return false;
#endif
}
bool
MediaDecoder::IsOggEnabled()
{
return Preferences::GetBool("media.ogg.enabled");
}
#endif
#ifdef MOZ_WAVE
bool
MediaDecoder::IsWaveEnabled()
{
return Preferences::GetBool("media.wave.enabled");
}
#endif
#ifdef MOZ_WEBM
bool
MediaDecoder::IsWebMEnabled()
{
return Preferences::GetBool("media.webm.enabled");
}
#endif
#ifdef MOZ_GSTREAMER
bool
MediaDecoder::IsGStreamerEnabled()
{
return Preferences::GetBool("media.gstreamer.enabled");
}
#endif
#ifdef MOZ_OMX_DECODER
bool
MediaDecoder::IsOmxEnabled()
{
return Preferences::GetBool("media.omx.enabled", false);
}
#endif
#ifdef MOZ_MEDIA_PLUGINS
bool
MediaDecoder::IsMediaPluginsEnabled()
{
return Preferences::GetBool("media.plugins.enabled");
}
#endif
#ifdef MOZ_DASH
bool
MediaDecoder::IsDASHEnabled()
{
return Preferences::GetBool("media.dash.enabled");
}
#endif
#ifdef MOZ_WMF
bool
MediaDecoder::IsWMFEnabled()
{
return WMFDecoder::IsEnabled();
}
#endif
#ifdef MOZ_APPLEMEDIA
bool
MediaDecoder::IsAppleMP3Enabled()
{
return Preferences::GetBool("media.apple.mp3.enabled");
}
#endif
class MediaReporter MOZ_FINAL : public nsIMemoryReporter
{
public:
NS_DECL_ISUPPORTS
NS_IMETHOD GetName(nsACString& aName)
{
aName.AssignLiteral("media");
return NS_OK;
}
NS_IMETHOD CollectReports(nsIMemoryReporterCallback* aCb,
nsISupports* aClosure)
{
int64_t video, audio;
MediaMemoryTracker::GetAmounts(&video, &audio);
#define REPORT(_path, _amount, _desc) \
do { \
nsresult rv; \
rv = aCb->Callback(EmptyCString(), NS_LITERAL_CSTRING(_path), \
nsIMemoryReporter::KIND_HEAP, \
nsIMemoryReporter::UNITS_BYTES, _amount, \
NS_LITERAL_CSTRING(_desc), aClosure); \
NS_ENSURE_SUCCESS(rv, rv); \
} while (0)
REPORT("explicit/media/decoded-video", video,
"Memory used by decoded video frames.");
REPORT("explicit/media/decoded-audio", audio,
"Memory used by decoded audio chunks.");
return NS_OK;
}
};
NS_IMPL_ISUPPORTS1(MediaReporter, nsIMemoryReporter)
MediaDecoderOwner*
MediaDecoder::GetOwner()
{
MOZ_ASSERT(NS_IsMainThread());
return mOwner;
}
MediaMemoryTracker::MediaMemoryTracker()
: mReporter(new MediaReporter())
{
NS_RegisterMemoryReporter(mReporter);
}
MediaMemoryTracker::~MediaMemoryTracker()
{
NS_UnregisterMemoryReporter(mReporter);
}
} // namespace mozilla
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