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gecko-dev/dom/media/MediaDecoder.cpp

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53 KiB
C++
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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 "ImageContainer.h"
#include "MediaResource.h"
#include "nsError.h"
#include "mozilla/Preferences.h"
#include "mozilla/StaticPtr.h"
#include "nsIMemoryReporter.h"
#include "nsComponentManagerUtils.h"
#include <algorithm>
#include "MediaShutdownManager.h"
#include "AudioChannelService.h"
#include "mozilla/dom/AudioTrack.h"
#include "mozilla/dom/AudioTrackList.h"
#include "mozilla/dom/HTMLMediaElement.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/VideoTrack.h"
#include "mozilla/dom/VideoTrackList.h"
#include "nsPrintfCString.h"
#include "mozilla/Telemetry.h"
#include "GMPService.h"
#ifdef MOZ_ANDROID_OMX
#include "AndroidBridge.h"
#endif
using namespace mozilla::dom;
using namespace mozilla::layers;
using namespace mozilla::media;
// Default timeout msecs until try to enter dormant state by heuristic.
static const int DEFAULT_HEURISTIC_DORMANT_TIMEOUT_MSECS = 60000;
namespace mozilla {
// The amount of instability we tollerate in calls to
// MediaDecoder::UpdateEstimatedMediaDuration(); changes of duration
// less than this are ignored, as they're assumed to be the result of
// instability in the duration estimation.
static const uint64_t ESTIMATED_DURATION_FUZZ_FACTOR_USECS = USECS_PER_S / 2;
// avoid redefined macro in unified build
#undef DECODER_LOG
#undef DUMP_LOG
LazyLogModule gMediaDecoderLog("MediaDecoder");
#define DECODER_LOG(x, ...) \
MOZ_LOG(gMediaDecoderLog, LogLevel::Debug, ("Decoder=%p " x, this, ##__VA_ARGS__))
#define DUMP_LOG(x, ...) \
NS_DebugBreak(NS_DEBUG_WARNING, nsPrintfCString("Decoder=%p " x, this, ##__VA_ARGS__).get(), nullptr, nullptr, -1)
static const char*
ToPlayStateStr(MediaDecoder::PlayState aState)
{
switch (aState) {
case MediaDecoder::PLAY_STATE_START: return "START";
case MediaDecoder::PLAY_STATE_LOADING: return "LOADING";
case MediaDecoder::PLAY_STATE_PAUSED: return "PAUSED";
case MediaDecoder::PLAY_STATE_PLAYING: return "PLAYING";
case MediaDecoder::PLAY_STATE_ENDED: return "ENDED";
case MediaDecoder::PLAY_STATE_SHUTDOWN: return "SHUTDOWN";
default: MOZ_ASSERT_UNREACHABLE("Invalid playState.");
}
return "UNKNOWN";
}
class MediaMemoryTracker : public nsIMemoryReporter
{
virtual ~MediaMemoryTracker();
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIMEMORYREPORTER
MOZ_DEFINE_MALLOC_SIZE_OF(MallocSizeOf);
MediaMemoryTracker();
void InitMemoryReporter();
static StaticRefPtr<MediaMemoryTracker> sUniqueInstance;
static MediaMemoryTracker* UniqueInstance() {
if (!sUniqueInstance) {
sUniqueInstance = new MediaMemoryTracker();
sUniqueInstance->InitMemoryReporter();
}
return sUniqueInstance;
}
typedef nsTArray<MediaDecoder*> DecodersArray;
static DecodersArray& Decoders() {
return UniqueInstance()->mDecoders;
}
DecodersArray mDecoders;
public:
static void AddMediaDecoder(MediaDecoder* aDecoder)
{
Decoders().AppendElement(aDecoder);
}
static void RemoveMediaDecoder(MediaDecoder* aDecoder)
{
DecodersArray& decoders = Decoders();
decoders.RemoveElement(aDecoder);
if (decoders.IsEmpty()) {
sUniqueInstance = nullptr;
}
}
};
StaticRefPtr<MediaMemoryTracker> MediaMemoryTracker::sUniqueInstance;
#if defined(PR_LOGGING)
LazyLogModule gMediaTimerLog("MediaTimer");
LazyLogModule gMediaSampleLog("MediaSample");
#endif
void
MediaDecoder::InitStatics()
{
MOZ_ASSERT(NS_IsMainThread());
}
NS_IMPL_ISUPPORTS(MediaMemoryTracker, nsIMemoryReporter)
NS_IMPL_ISUPPORTS0(MediaDecoder)
void
MediaDecoder::ResourceCallback::Connect(MediaDecoder* aDecoder)
{
MOZ_ASSERT(NS_IsMainThread());
mDecoder = aDecoder;
}
void
MediaDecoder::ResourceCallback::Disconnect()
{
MOZ_ASSERT(NS_IsMainThread());
mDecoder = nullptr;
}
MediaDecoderOwner*
MediaDecoder::ResourceCallback::GetMediaOwner() const
{
MOZ_ASSERT(NS_IsMainThread());
return mDecoder ? mDecoder->GetOwner() : nullptr;
}
void
MediaDecoder::ResourceCallback::SetInfinite(bool aInfinite)
{
MOZ_ASSERT(NS_IsMainThread());
if (mDecoder) {
mDecoder->SetInfinite(aInfinite);
}
}
void
MediaDecoder::ResourceCallback::SetMediaSeekable(bool aMediaSeekable)
{
MOZ_ASSERT(NS_IsMainThread());
if (mDecoder) {
mDecoder->SetMediaSeekable(aMediaSeekable);
}
}
void
MediaDecoder::ResourceCallback::ResetConnectionState()
{
MOZ_ASSERT(NS_IsMainThread());
if (mDecoder) {
mDecoder->ResetConnectionState();
}
}
nsresult
MediaDecoder::ResourceCallback::FinishDecoderSetup(MediaResource* aResource)
{
MOZ_ASSERT(NS_IsMainThread());
return mDecoder ? mDecoder->FinishDecoderSetup(aResource) : NS_ERROR_FAILURE;
}
void
MediaDecoder::ResourceCallback::NotifyNetworkError()
{
MOZ_ASSERT(NS_IsMainThread());
if (mDecoder) {
mDecoder->NetworkError();
}
}
void
MediaDecoder::ResourceCallback::NotifyDecodeError()
{
RefPtr<ResourceCallback> self = this;
nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction([=] () {
if (self->mDecoder) {
self->mDecoder->DecodeError();
}
});
AbstractThread::MainThread()->Dispatch(r.forget());
}
void
MediaDecoder::ResourceCallback::NotifyDataArrived()
{
MOZ_ASSERT(NS_IsMainThread());
if (mDecoder) {
mDecoder->NotifyDataArrived();
}
}
void
MediaDecoder::ResourceCallback::NotifyBytesDownloaded()
{
MOZ_ASSERT(NS_IsMainThread());
if (mDecoder) {
mDecoder->NotifyBytesDownloaded();
}
}
void
MediaDecoder::ResourceCallback::NotifyDataEnded(nsresult aStatus)
{
RefPtr<ResourceCallback> self = this;
nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction([=] () {
if (!self->mDecoder) {
return;
}
self->mDecoder->NotifyDownloadEnded(aStatus);
if (NS_SUCCEEDED(aStatus)) {
HTMLMediaElement* element = self->GetMediaOwner()->GetMediaElement();
if (element) {
element->DownloadSuspended();
}
// NotifySuspendedStatusChanged will tell the element that download
// has been suspended "by the cache", which is true since we never
// download anything. The element can then transition to HAVE_ENOUGH_DATA.
self->mDecoder->NotifySuspendedStatusChanged();
}
});
AbstractThread::MainThread()->Dispatch(r.forget());
}
void
MediaDecoder::ResourceCallback::NotifyPrincipalChanged()
{
MOZ_ASSERT(NS_IsMainThread());
if (mDecoder) {
mDecoder->NotifyPrincipalChanged();
}
}
void
MediaDecoder::ResourceCallback::NotifySuspendedStatusChanged()
{
MOZ_ASSERT(NS_IsMainThread());
if (mDecoder) {
mDecoder->NotifySuspendedStatusChanged();
}
}
void
MediaDecoder::ResourceCallback::NotifyBytesConsumed(int64_t aBytes,
int64_t aOffset)
{
RefPtr<ResourceCallback> self = this;
nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction([=] () {
if (self->mDecoder) {
self->mDecoder->NotifyBytesConsumed(aBytes, aOffset);
}
});
AbstractThread::MainThread()->Dispatch(r.forget());
}
void
MediaDecoder::NotifyOwnerActivityChanged(bool aIsVisible)
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown) {
return;
}
SetElementVisibility(aIsVisible);
UpdateDormantState(false /* aDormantTimeout */, false /* aActivity */);
// Start dormant timer if necessary
StartDormantTimer();
}
bool
MediaDecoder::IsHeuristicDormantSupported() const
{
MOZ_ASSERT(NS_IsMainThread());
return
#if defined(MOZ_EME)
// We disallow dormant for encrypted media until bug 1181864 is fixed.
mInfo &&
!mInfo->IsEncrypted() &&
#endif
mIsHeuristicDormantSupported;
}
void
MediaDecoder::UpdateDormantState(bool aDormantTimeout, bool aActivity)
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown ||
!mDecoderStateMachine ||
mPlayState == PLAY_STATE_SHUTDOWN ||
!mOwner->GetVideoFrameContainer() ||
(mOwner->GetMediaElement() && mOwner->GetMediaElement()->IsBeingDestroyed()) ||
!mDormantSupported)
{
return;
}
DECODER_LOG("UpdateDormantState aTimeout=%d aActivity=%d mIsDormant=%d "
"ownerActive=%d mIsVisible=%d mIsHeuristicDormant=%d "
"mPlayState=%s encrypted=%s",
aDormantTimeout, aActivity, mIsDormant, mOwner->IsActive(),
mIsVisible.Ref(), mIsHeuristicDormant, PlayStateStr(),
(!mInfo ? "Unknown" : (mInfo->IsEncrypted() ? "1" : "0")));
bool prevDormant = mIsDormant;
mIsDormant = false;
#ifdef MOZ_WIDGET_GONK
if (mOwner->IsHidden()) {
mIsDormant = true;
}
#endif
// Try to enable dormant by idle heuristic, when the owner is hidden.
bool prevHeuristicDormant = mIsHeuristicDormant;
mIsHeuristicDormant = false;
if (IsHeuristicDormantSupported() && !mIsVisible) {
// Do not enter dormant when MediaDecoder is not paused nor ended.
if ((aDormantTimeout || !mOwner->IsActive()) && !aActivity &&
(mPlayState == PLAY_STATE_PAUSED || IsEnded())) {
// Enable heuristic dormant
mIsHeuristicDormant = true;
} else if(prevHeuristicDormant && !aActivity) {
// Continue heuristic dormant
mIsHeuristicDormant = true;
}
if (mIsHeuristicDormant) {
mIsDormant = true;
}
}
if (prevDormant == mIsDormant) {
// No update to dormant state
return;
}
if (mIsDormant) {
DECODER_LOG("UpdateDormantState() entering DORMANT state");
// enter dormant state
mDecoderStateMachine->DispatchSetDormant(true);
if (IsEnded()) {
mWasEndedWhenEnteredDormant = true;
}
mNextState = mPlayState;
ChangeState(PLAY_STATE_LOADING);
} else {
DECODER_LOG("UpdateDormantState() leaving DORMANT state");
// exit dormant state
mDecoderStateMachine->DispatchSetDormant(false);
}
}
void
MediaDecoder::DormantTimerExpired(nsITimer* aTimer, void* aClosure)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aClosure);
MediaDecoder* decoder = static_cast<MediaDecoder*>(aClosure);
decoder->UpdateDormantState(true /* aDormantTimeout */,
false /* aActivity */);
}
void
MediaDecoder::StartDormantTimer()
{
MOZ_ASSERT(NS_IsMainThread());
if (!IsHeuristicDormantSupported()) {
return;
}
if (mIsHeuristicDormant ||
mShuttingDown ||
mIsVisible ||
(mPlayState != PLAY_STATE_PAUSED &&
!IsEnded()))
{
return;
}
if (!mDormantTimer) {
mDormantTimer = do_CreateInstance("@mozilla.org/timer;1");
}
mDormantTimer->InitWithFuncCallback(&MediaDecoder::DormantTimerExpired,
this,
mHeuristicDormantTimeout,
nsITimer::TYPE_ONE_SHOT);
}
void
MediaDecoder::CancelDormantTimer()
{
MOZ_ASSERT(NS_IsMainThread());
if (mDormantTimer) {
mDormantTimer->Cancel();
}
}
void
MediaDecoder::Pause()
{
MOZ_ASSERT(NS_IsMainThread());
if (mPlayState == PLAY_STATE_LOADING ||
IsEnded()) {
mNextState = PLAY_STATE_PAUSED;
return;
}
ChangeState(PLAY_STATE_PAUSED);
}
void
MediaDecoder::SetVolume(double aVolume)
{
MOZ_ASSERT(NS_IsMainThread());
mVolume = aVolume;
}
void
MediaDecoder::AddOutputStream(ProcessedMediaStream* aStream,
bool aFinishWhenEnded)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mDecoderStateMachine, "Must be called after Load().");
mDecoderStateMachine->AddOutputStream(aStream, aFinishWhenEnded);
}
void
MediaDecoder::RemoveOutputStream(MediaStream* aStream)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mDecoderStateMachine, "Must be called after Load().");
mDecoderStateMachine->RemoveOutputStream(aStream);
}
double
MediaDecoder::GetDuration()
{
MOZ_ASSERT(NS_IsMainThread());
return mDuration;
}
AbstractCanonical<media::NullableTimeUnit>*
MediaDecoder::CanonicalDurationOrNull()
{
MOZ_ASSERT(mDecoderStateMachine);
return mDecoderStateMachine->CanonicalDuration();
}
void
MediaDecoder::SetInfinite(bool aInfinite)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!mShuttingDown);
mInfiniteStream = aInfinite;
DurationChanged();
}
bool
MediaDecoder::IsInfinite()
{
MOZ_ASSERT(NS_IsMainThread());
return mInfiniteStream;
}
MediaDecoder::MediaDecoder(MediaDecoderOwner* aOwner)
: mWatchManager(this, AbstractThread::MainThread())
, mDormantSupported(false)
, mLogicalPosition(0.0)
, mDuration(std::numeric_limits<double>::quiet_NaN())
, mResourceCallback(new ResourceCallback())
#ifdef MOZ_EME
, mCDMProxyPromise(mCDMProxyPromiseHolder.Ensure(__func__))
#endif
, mIgnoreProgressData(false)
, mInfiniteStream(false)
, mOwner(aOwner)
, mFrameStats(new FrameStatistics())
, mVideoFrameContainer(aOwner->GetVideoFrameContainer())
, mPlaybackStatistics(new MediaChannelStatistics())
, mPinnedForSeek(false)
, mShuttingDown(false)
, mPausedForPlaybackRateNull(false)
, mMinimizePreroll(false)
, mMediaTracksConstructed(false)
, mFiredMetadataLoaded(false)
, mIsDormant(false)
, mWasEndedWhenEnteredDormant(false)
, mIsHeuristicDormantSupported(
Preferences::GetBool("media.decoder.heuristic.dormant.enabled", false))
, mHeuristicDormantTimeout(
Preferences::GetInt("media.decoder.heuristic.dormant.timeout",
DEFAULT_HEURISTIC_DORMANT_TIMEOUT_MSECS))
, mIsHeuristicDormant(false)
, mStateMachineIsShutdown(AbstractThread::MainThread(), true,
"MediaDecoder::mStateMachineIsShutdown (Mirror)")
, mBuffered(AbstractThread::MainThread(), TimeIntervals(),
"MediaDecoder::mBuffered (Mirror)")
, mNextFrameStatus(AbstractThread::MainThread(),
MediaDecoderOwner::NEXT_FRAME_UNINITIALIZED,
"MediaDecoder::mNextFrameStatus (Mirror)")
, mCurrentPosition(AbstractThread::MainThread(), 0,
"MediaDecoder::mCurrentPosition (Mirror)")
, mStateMachineDuration(AbstractThread::MainThread(), NullableTimeUnit(),
"MediaDecoder::mStateMachineDuration (Mirror)")
, mPlaybackPosition(AbstractThread::MainThread(), 0,
"MediaDecoder::mPlaybackPosition (Mirror)")
, mIsAudioDataAudible(AbstractThread::MainThread(), false,
"MediaDecoder::mIsAudioDataAudible (Mirror)")
, mVolume(AbstractThread::MainThread(), 0.0,
"MediaDecoder::mVolume (Canonical)")
, mPlaybackRate(AbstractThread::MainThread(), 1.0,
"MediaDecoder::mPlaybackRate (Canonical)")
, mPreservesPitch(AbstractThread::MainThread(), true,
"MediaDecoder::mPreservesPitch (Canonical)")
, mEstimatedDuration(AbstractThread::MainThread(), NullableTimeUnit(),
"MediaDecoder::mEstimatedDuration (Canonical)")
, mExplicitDuration(AbstractThread::MainThread(), Maybe<double>(),
"MediaDecoder::mExplicitDuration (Canonical)")
, mPlayState(AbstractThread::MainThread(), PLAY_STATE_LOADING,
"MediaDecoder::mPlayState (Canonical)")
, mNextState(AbstractThread::MainThread(), PLAY_STATE_PAUSED,
"MediaDecoder::mNextState (Canonical)")
, mLogicallySeeking(AbstractThread::MainThread(), false,
"MediaDecoder::mLogicallySeeking (Canonical)")
, mSameOriginMedia(AbstractThread::MainThread(), false,
"MediaDecoder::mSameOriginMedia (Canonical)")
, mMediaPrincipalHandle(AbstractThread::MainThread(), PRINCIPAL_HANDLE_NONE,
"MediaDecoder::mMediaPrincipalHandle (Canonical)")
, mPlaybackBytesPerSecond(AbstractThread::MainThread(), 0.0,
"MediaDecoder::mPlaybackBytesPerSecond (Canonical)")
, mPlaybackRateReliable(AbstractThread::MainThread(), true,
"MediaDecoder::mPlaybackRateReliable (Canonical)")
, mDecoderPosition(AbstractThread::MainThread(), 0,
"MediaDecoder::mDecoderPosition (Canonical)")
, mMediaSeekable(AbstractThread::MainThread(), true,
"MediaDecoder::mMediaSeekable (Canonical)")
, mMediaSeekableOnlyInBufferedRanges(AbstractThread::MainThread(), false,
"MediaDecoder::mMediaSeekableOnlyInBufferedRanges (Canonical)")
, mIsVisible(AbstractThread::MainThread(), !mOwner->IsHidden(),
"MediaDecoder::mIsVisible (Canonical)")
, mTelemetryReported(false)
{
MOZ_COUNT_CTOR(MediaDecoder);
MOZ_ASSERT(NS_IsMainThread());
MediaMemoryTracker::AddMediaDecoder(this);
mAudioChannel = AudioChannelService::GetDefaultAudioChannel();
mResourceCallback->Connect(this);
//
// Initialize watchers.
//
// mDuration
mWatchManager.Watch(mStateMachineDuration, &MediaDecoder::DurationChanged);
// mStateMachineIsShutdown
mWatchManager.Watch(mStateMachineIsShutdown, &MediaDecoder::ShutdownBitChanged);
// readyState
mWatchManager.Watch(mPlayState, &MediaDecoder::UpdateReadyState);
mWatchManager.Watch(mNextFrameStatus, &MediaDecoder::UpdateReadyState);
// ReadyState computation depends on MediaDecoder::CanPlayThrough, which
// depends on the download rate.
mWatchManager.Watch(mBuffered, &MediaDecoder::UpdateReadyState);
// mLogicalPosition
mWatchManager.Watch(mCurrentPosition, &MediaDecoder::UpdateLogicalPosition);
mWatchManager.Watch(mPlayState, &MediaDecoder::UpdateLogicalPosition);
mWatchManager.Watch(mLogicallySeeking, &MediaDecoder::UpdateLogicalPosition);
// mIgnoreProgressData
mWatchManager.Watch(mLogicallySeeking, &MediaDecoder::SeekingChanged);
mWatchManager.Watch(mIsAudioDataAudible, &MediaDecoder::NotifyAudibleStateChanged);
MediaShutdownManager::Instance().Register(this);
}
void
MediaDecoder::Shutdown()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown) {
return;
}
mShuttingDown = true;
mResourceCallback->Disconnect();
#ifdef MOZ_EME
mCDMProxyPromiseHolder.RejectIfExists(true, __func__);
#endif
// 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) {
mTimedMetadataListener.Disconnect();
mMetadataLoadedListener.Disconnect();
mFirstFrameLoadedListener.Disconnect();
mOnPlaybackEvent.Disconnect();
mOnSeekingStart.Disconnect();
mOnMediaNotSeekable.Disconnect();
mWatchManager.Unwatch(mIsAudioDataAudible, &MediaDecoder::NotifyAudibleStateChanged);
mDecoderStateMachine->BeginShutdown()
->Then(AbstractThread::MainThread(), __func__, this,
&MediaDecoder::FinishShutdown,
&MediaDecoder::FinishShutdown);
} else {
// Ensure we always unregister asynchronously in order not to disrupt
// the hashtable iterating in MediaShutdownManager::Shutdown().
RefPtr<MediaDecoder> self = this;
nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction([self] () {
self->mVideoFrameContainer = nullptr;
MediaShutdownManager::Instance().Unregister(self);
});
AbstractThread::MainThread()->Dispatch(r.forget());
}
// Force any outstanding seek and byterange requests to complete
// to prevent shutdown from deadlocking.
if (mResource) {
mResource->Close();
}
CancelDormantTimer();
ChangeState(PLAY_STATE_SHUTDOWN);
}
MediaDecoder::~MediaDecoder()
{
MOZ_ASSERT(NS_IsMainThread());
MediaMemoryTracker::RemoveMediaDecoder(this);
UnpinForSeek();
MOZ_COUNT_DTOR(MediaDecoder);
}
void
MediaDecoder::OnPlaybackEvent(MediaEventType aEvent)
{
switch (aEvent) {
case MediaEventType::PlaybackStarted:
mPlaybackStatistics->Start();
break;
case MediaEventType::PlaybackStopped:
mPlaybackStatistics->Stop();
ComputePlaybackRate();
break;
case MediaEventType::PlaybackEnded:
PlaybackEnded();
break;
case MediaEventType::DecodeError:
DecodeError();
break;
case MediaEventType::Invalidate:
Invalidate();
break;
}
}
void
MediaDecoder::FinishShutdown()
{
MOZ_ASSERT(NS_IsMainThread());
mDecoderStateMachine->BreakCycles();
SetStateMachine(nullptr);
mVideoFrameContainer = nullptr;
MediaShutdownManager::Instance().Unregister(this);
}
MediaResourceCallback*
MediaDecoder::GetResourceCallback() const
{
return mResourceCallback;
}
nsresult
MediaDecoder::OpenResource(nsIStreamListener** aStreamListener)
{
MOZ_ASSERT(NS_IsMainThread());
if (aStreamListener) {
*aStreamListener = nullptr;
}
return mResource->Open(aStreamListener);
}
nsresult
MediaDecoder::Load(nsIStreamListener** aStreamListener)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mResource, "Can't load without a MediaResource");
nsresult rv = OpenResource(aStreamListener);
NS_ENSURE_SUCCESS(rv, rv);
SetStateMachine(CreateStateMachine());
NS_ENSURE_TRUE(GetStateMachine(), NS_ERROR_FAILURE);
return InitializeStateMachine();
}
nsresult
MediaDecoder::InitializeStateMachine()
{
MOZ_ASSERT(NS_IsMainThread());
NS_ASSERTION(mDecoderStateMachine, "Cannot initialize null state machine!");
nsresult rv = mDecoderStateMachine->Init(this);
NS_ENSURE_SUCCESS(rv, rv);
// If some parameters got set before the state machine got created,
// set them now
SetStateMachineParameters();
return NS_OK;
}
void
MediaDecoder::SetStateMachineParameters()
{
MOZ_ASSERT(NS_IsMainThread());
if (mMinimizePreroll) {
mDecoderStateMachine->DispatchMinimizePrerollUntilPlaybackStarts();
}
mTimedMetadataListener = mDecoderStateMachine->TimedMetadataEvent().Connect(
AbstractThread::MainThread(), this, &MediaDecoder::OnMetadataUpdate);
mMetadataLoadedListener = mDecoderStateMachine->MetadataLoadedEvent().Connect(
AbstractThread::MainThread(), this, &MediaDecoder::MetadataLoaded);
mFirstFrameLoadedListener = mDecoderStateMachine->FirstFrameLoadedEvent().Connect(
AbstractThread::MainThread(), this, &MediaDecoder::FirstFrameLoaded);
mOnPlaybackEvent = mDecoderStateMachine->OnPlaybackEvent().Connect(
AbstractThread::MainThread(), this, &MediaDecoder::OnPlaybackEvent);
mOnSeekingStart = mDecoderStateMachine->OnSeekingStart().Connect(
AbstractThread::MainThread(), this, &MediaDecoder::SeekingStarted);
mOnMediaNotSeekable = mDecoderStateMachine->OnMediaNotSeekable().Connect(
AbstractThread::MainThread(), this, &MediaDecoder::OnMediaNotSeekable);
}
void
MediaDecoder::SetMinimizePrerollUntilPlaybackStarts()
{
MOZ_ASSERT(NS_IsMainThread());
DECODER_LOG("SetMinimizePrerollUntilPlaybackStarts()");
mMinimizePreroll = true;
// This needs to be called before we init the state machine, otherwise it will
// have no effect.
MOZ_DIAGNOSTIC_ASSERT(!mDecoderStateMachine);
}
nsresult
MediaDecoder::Play()
{
MOZ_ASSERT(NS_IsMainThread());
UpdateDormantState(false /* aDormantTimeout */, true /* aActivity */);
NS_ASSERTION(mDecoderStateMachine != nullptr, "Should have state machine.");
if (mPausedForPlaybackRateNull) {
return NS_OK;
}
if (IsEnded()) {
return Seek(0, SeekTarget::PrevSyncPoint);
} else if (mPlayState == PLAY_STATE_LOADING) {
mNextState = PLAY_STATE_PLAYING;
return NS_OK;
}
ChangeState(PLAY_STATE_PLAYING);
return NS_OK;
}
nsresult
MediaDecoder::Seek(double aTime, SeekTarget::Type aSeekType, dom::Promise* aPromise /*=nullptr*/)
{
MOZ_ASSERT(NS_IsMainThread());
NS_ENSURE_TRUE(!mShuttingDown, NS_ERROR_FAILURE);
UpdateDormantState(false /* aDormantTimeout */, true /* aActivity */);
MOZ_ASSERT(!mIsDormant, "should be out of dormant by now");
MOZ_ASSERT(aTime >= 0.0, "Cannot seek to a negative value.");
int64_t timeUsecs = TimeUnit::FromSeconds(aTime).ToMicroseconds();
mLogicalPosition = aTime;
mWasEndedWhenEnteredDormant = false;
mLogicallySeeking = true;
SeekTarget target = SeekTarget(timeUsecs, aSeekType);
CallSeek(target, aPromise);
if (mPlayState == PLAY_STATE_ENDED) {
PinForSeek();
ChangeState(mOwner->GetPaused() ? PLAY_STATE_PAUSED : PLAY_STATE_PLAYING);
}
return NS_OK;
}
void
MediaDecoder::AsyncResolveSeekDOMPromiseIfExists()
{
MOZ_ASSERT(NS_IsMainThread());
if (mSeekDOMPromise) {
RefPtr<dom::Promise> promise = mSeekDOMPromise;
nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction([=] () {
promise->MaybeResolve(JS::UndefinedHandleValue);
});
AbstractThread::MainThread()->Dispatch(r.forget());
mSeekDOMPromise = nullptr;
}
}
void
MediaDecoder::AsyncRejectSeekDOMPromiseIfExists()
{
MOZ_ASSERT(NS_IsMainThread());
if (mSeekDOMPromise) {
RefPtr<dom::Promise> promise = mSeekDOMPromise;
nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction([=] () {
promise->MaybeRejectWithUndefined();
});
AbstractThread::MainThread()->Dispatch(r.forget());
mSeekDOMPromise = nullptr;
}
}
void
MediaDecoder::DiscardOngoingSeekIfExists()
{
MOZ_ASSERT(NS_IsMainThread());
mSeekRequest.DisconnectIfExists();
AsyncRejectSeekDOMPromiseIfExists();
}
void
MediaDecoder::CallSeek(const SeekTarget& aTarget, dom::Promise* aPromise)
{
MOZ_ASSERT(NS_IsMainThread());
DiscardOngoingSeekIfExists();
mSeekDOMPromise = aPromise;
mSeekRequest.Begin(
mDecoderStateMachine->InvokeSeek(aTarget)
->Then(AbstractThread::MainThread(), __func__, this,
&MediaDecoder::OnSeekResolved, &MediaDecoder::OnSeekRejected));
}
double
MediaDecoder::GetCurrentTime()
{
MOZ_ASSERT(NS_IsMainThread());
return mLogicalPosition;
}
already_AddRefed<nsIPrincipal>
MediaDecoder::GetCurrentPrincipal()
{
MOZ_ASSERT(NS_IsMainThread());
return mResource ? mResource->GetCurrentPrincipal() : nullptr;
}
void
MediaDecoder::OnMetadataUpdate(TimedMetadata&& aMetadata)
{
MOZ_ASSERT(NS_IsMainThread());
RemoveMediaTracks();
MetadataLoaded(nsAutoPtr<MediaInfo>(new MediaInfo(*aMetadata.mInfo)),
Move(aMetadata.mTags),
MediaDecoderEventVisibility::Observable);
FirstFrameLoaded(Move(aMetadata.mInfo),
MediaDecoderEventVisibility::Observable);
}
void
MediaDecoder::MetadataLoaded(nsAutoPtr<MediaInfo> aInfo,
nsAutoPtr<MetadataTags> aTags,
MediaDecoderEventVisibility aEventVisibility)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!mShuttingDown);
DECODER_LOG("MetadataLoaded, channels=%u rate=%u hasAudio=%d hasVideo=%d",
aInfo->mAudio.mChannels, aInfo->mAudio.mRate,
aInfo->HasAudio(), aInfo->HasVideo());
SetMediaSeekable(aInfo->mMediaSeekable);
SetMediaSeekableOnlyInBufferedRanges(aInfo->mMediaSeekableOnlyInBufferedRanges);
mInfo = aInfo.forget();
ConstructMediaTracks();
// Make sure the element and the frame (if any) are told about
// our new size.
if (aEventVisibility != MediaDecoderEventVisibility::Suppressed) {
mFiredMetadataLoaded = true;
mOwner->MetadataLoaded(mInfo, nsAutoPtr<const MetadataTags>(aTags.forget()));
}
// Invalidate() will end up calling mOwner->UpdateMediaSize with the last
// dimensions retrieved from the video frame container. The video frame
// container contains more up to date dimensions than aInfo.
// So we call Invalidate() after calling mOwner->MetadataLoaded to ensure
// the media element has the latest dimensions.
Invalidate();
EnsureTelemetryReported();
}
void
MediaDecoder::EnsureTelemetryReported()
{
MOZ_ASSERT(NS_IsMainThread());
if (mTelemetryReported || !mInfo) {
// Note: sometimes we get multiple MetadataLoaded calls (for example
// for chained ogg). So we ensure we don't report duplicate results for
// these resources.
return;
}
nsTArray<nsCString> codecs;
if (mInfo->HasAudio() && !mInfo->mAudio.GetAsAudioInfo()->mMimeType.IsEmpty()) {
codecs.AppendElement(mInfo->mAudio.GetAsAudioInfo()->mMimeType);
}
if (mInfo->HasVideo() && !mInfo->mVideo.GetAsVideoInfo()->mMimeType.IsEmpty()) {
codecs.AppendElement(mInfo->mVideo.GetAsVideoInfo()->mMimeType);
}
if (codecs.IsEmpty()) {
if (mResource->GetContentType().IsEmpty()) {
NS_WARNING("Somehow the resource's content type is empty");
return;
}
codecs.AppendElement(nsPrintfCString("resource; %s", mResource->GetContentType().get()));
}
for (const nsCString& codec : codecs) {
DECODER_LOG("Telemetry MEDIA_CODEC_USED= '%s'", codec.get());
Telemetry::Accumulate(Telemetry::ID::MEDIA_CODEC_USED, codec);
}
mTelemetryReported = true;
}
const char*
MediaDecoder::PlayStateStr()
{
MOZ_ASSERT(NS_IsMainThread());
return ToPlayStateStr(mPlayState);
}
void
MediaDecoder::FirstFrameLoaded(nsAutoPtr<MediaInfo> aInfo,
MediaDecoderEventVisibility aEventVisibility)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!mShuttingDown);
DECODER_LOG("FirstFrameLoaded, channels=%u rate=%u hasAudio=%d hasVideo=%d mPlayState=%s mIsDormant=%d",
aInfo->mAudio.mChannels, aInfo->mAudio.mRate,
aInfo->HasAudio(), aInfo->HasVideo(), PlayStateStr(), mIsDormant);
mInfo = aInfo.forget();
Invalidate();
if (aEventVisibility != MediaDecoderEventVisibility::Suppressed) {
mOwner->FirstFrameLoaded();
}
// 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 && !mIsDormant) {
ChangeState(mNextState);
}
// Run NotifySuspendedStatusChanged now to give us a chance to notice
// that autoplay should run.
NotifySuspendedStatusChanged();
}
nsresult
MediaDecoder::FinishDecoderSetup(MediaResource* aResource)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!mShuttingDown);
HTMLMediaElement* element = mOwner->GetMediaElement();
NS_ENSURE_TRUE(element, NS_ERROR_FAILURE);
element->FinishDecoderSetup(this, aResource);
return NS_OK;
}
void
MediaDecoder::ResetConnectionState()
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!mShuttingDown);
// Notify the media element that connection gets lost.
mOwner->ResetConnectionState();
// Since we have notified the media element the connection
// lost event, the decoder will be reloaded when user tries
// to play the Rtsp streaming next time.
Shutdown();
}
void
MediaDecoder::NetworkError()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown)
return;
mOwner->NetworkError();
Shutdown();
}
void
MediaDecoder::DecodeError()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown)
return;
mOwner->DecodeError();
Shutdown();
}
void
MediaDecoder::UpdateSameOriginStatus(bool aSameOrigin)
{
MOZ_ASSERT(NS_IsMainThread());
mSameOriginMedia = aSameOrigin;
}
bool
MediaDecoder::IsSeeking() const
{
MOZ_ASSERT(NS_IsMainThread());
return mLogicallySeeking;
}
bool
MediaDecoder::IsEndedOrShutdown() const
{
MOZ_ASSERT(NS_IsMainThread());
return IsEnded() || mPlayState == PLAY_STATE_SHUTDOWN;
}
bool
MediaDecoder::OwnerHasError() const
{
MOZ_ASSERT(NS_IsMainThread());
return mShuttingDown || mOwner->HasError();
}
class MediaElementGMPCrashHelper : public GMPCrashHelper
{
public:
explicit MediaElementGMPCrashHelper(HTMLMediaElement* aElement)
: mElement(aElement)
{
MOZ_ASSERT(NS_IsMainThread()); // WeakPtr isn't thread safe.
}
already_AddRefed<nsPIDOMWindowInner> GetPluginCrashedEventTarget() override
{
MOZ_ASSERT(NS_IsMainThread()); // WeakPtr isn't thread safe.
if (!mElement) {
return nullptr;
}
return do_AddRef(mElement->OwnerDoc()->GetInnerWindow());
}
private:
WeakPtr<HTMLMediaElement> mElement;
};
already_AddRefed<GMPCrashHelper>
MediaDecoder::GetCrashHelper()
{
MOZ_ASSERT(NS_IsMainThread());
return mOwner->GetMediaElement() ?
MakeAndAddRef<MediaElementGMPCrashHelper>(mOwner->GetMediaElement()) : nullptr;
}
bool
MediaDecoder::IsEnded() const
{
MOZ_ASSERT(NS_IsMainThread());
return mPlayState == PLAY_STATE_ENDED ||
(mWasEndedWhenEnteredDormant && (mPlayState != PLAY_STATE_SHUTDOWN));
}
void
MediaDecoder::PlaybackEnded()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown ||
mLogicallySeeking ||
mPlayState == PLAY_STATE_LOADING) {
return;
}
ChangeState(PLAY_STATE_ENDED);
InvalidateWithFlags(VideoFrameContainer::INVALIDATE_FORCE);
mOwner->PlaybackEnded();
// This must be called after |mOwner->PlaybackEnded()| call above, in order
// to fire the required durationchange.
if (IsInfinite()) {
SetInfinite(false);
}
}
MediaStatistics
MediaDecoder::GetStatistics()
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mResource);
MediaStatistics result;
result.mDownloadRate = mResource->GetDownloadRate(&result.mDownloadRateReliable);
result.mDownloadPosition = mResource->GetCachedDataEnd(mDecoderPosition);
result.mTotalBytes = mResource->GetLength();
result.mPlaybackRate = mPlaybackBytesPerSecond;
result.mPlaybackRateReliable = mPlaybackRateReliable;
result.mDecoderPosition = mDecoderPosition;
result.mPlaybackPosition = mPlaybackPosition;
return result;
}
void
MediaDecoder::ComputePlaybackRate()
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mResource);
int64_t length = mResource->GetLength();
if (!IsNaN(mDuration) && !mozilla::IsInfinite<double>(mDuration) && length >= 0) {
mPlaybackRateReliable = true;
mPlaybackBytesPerSecond = length / mDuration;
return;
}
bool reliable = false;
mPlaybackBytesPerSecond = mPlaybackStatistics->GetRateAtLastStop(&reliable);
mPlaybackRateReliable = reliable;
}
void
MediaDecoder::UpdatePlaybackRate()
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mResource);
ComputePlaybackRate();
uint32_t rate = mPlaybackBytesPerSecond;
if (mPlaybackRateReliable) {
// 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());
MOZ_ASSERT(!mShuttingDown);
if (mResource) {
bool suspended = mResource->IsSuspendedByCache();
mOwner->NotifySuspendedByCache(suspended);
}
}
void
MediaDecoder::NotifyBytesDownloaded()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown) {
return;
}
UpdatePlaybackRate();
mOwner->DownloadProgressed();
}
void
MediaDecoder::NotifyDownloadEnded(nsresult aStatus)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!mShuttingDown);
DECODER_LOG("NotifyDownloadEnded, status=%x", aStatus);
if (aStatus == NS_BINDING_ABORTED) {
// Download has been cancelled by user.
mOwner->LoadAborted();
return;
}
UpdatePlaybackRate();
if (NS_SUCCEEDED(aStatus)) {
// A final progress event will be fired by the MediaResource calling
// DownloadSuspended on the element.
// Also NotifySuspendedStatusChanged() will be called to update readyState
// if download ended with success.
} else if (aStatus != NS_BASE_STREAM_CLOSED) {
NetworkError();
}
}
void
MediaDecoder::NotifyPrincipalChanged()
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!mShuttingDown);
nsCOMPtr<nsIPrincipal> newPrincipal = GetCurrentPrincipal();
mMediaPrincipalHandle = MakePrincipalHandle(newPrincipal);
mOwner->NotifyDecoderPrincipalChanged();
}
void
MediaDecoder::NotifyBytesConsumed(int64_t aBytes, int64_t aOffset)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!mShuttingDown);
if (mIgnoreProgressData) {
return;
}
MOZ_ASSERT(mDecoderStateMachine);
if (aOffset >= mDecoderPosition) {
mPlaybackStatistics->AddBytes(aBytes);
}
mDecoderPosition = aOffset + aBytes;
}
void
MediaDecoder::OnSeekResolved(SeekResolveValue aVal)
{
MOZ_ASSERT(NS_IsMainThread());
mSeekRequest.Complete();
if (mShuttingDown)
return;
bool fireEnded = false;
{
// An additional seek was requested while the current seek was
// in operation.
UnpinForSeek();
fireEnded = aVal.mAtEnd;
if (aVal.mAtEnd) {
ChangeState(PLAY_STATE_ENDED);
}
mLogicallySeeking = false;
}
// Ensure logical position is updated after seek.
UpdateLogicalPositionInternal(aVal.mEventVisibility);
if (aVal.mEventVisibility != MediaDecoderEventVisibility::Suppressed) {
mOwner->SeekCompleted();
AsyncResolveSeekDOMPromiseIfExists();
if (fireEnded) {
mOwner->PlaybackEnded();
}
}
}
void
MediaDecoder::OnSeekRejected()
{
MOZ_ASSERT(NS_IsMainThread());
mSeekRequest.Complete();
mLogicallySeeking = false;
AsyncRejectSeekDOMPromiseIfExists();
}
void
MediaDecoder::SeekingStarted(MediaDecoderEventVisibility aEventVisibility)
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown)
return;
if (aEventVisibility != MediaDecoderEventVisibility::Suppressed) {
mOwner->SeekStarted();
}
}
void
MediaDecoder::ChangeState(PlayState aState)
{
MOZ_ASSERT(NS_IsMainThread());
if (mNextState == aState) {
mNextState = PLAY_STATE_PAUSED;
}
if (mPlayState == PLAY_STATE_SHUTDOWN) {
return;
}
DECODER_LOG("ChangeState %s => %s", PlayStateStr(), ToPlayStateStr(aState));
mPlayState = aState;
if (mPlayState == PLAY_STATE_PLAYING) {
ConstructMediaTracks();
} else if (IsEnded()) {
RemoveMediaTracks();
}
CancelDormantTimer();
// Start dormant timer if necessary
StartDormantTimer();
}
void
MediaDecoder::UpdateLogicalPositionInternal(MediaDecoderEventVisibility aEventVisibility)
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown) {
return;
}
double currentPosition = static_cast<double>(CurrentPosition()) / static_cast<double>(USECS_PER_S);
bool logicalPositionChanged = mLogicalPosition != currentPosition;
mLogicalPosition = currentPosition;
// 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 (logicalPositionChanged &&
aEventVisibility != MediaDecoderEventVisibility::Suppressed) {
FireTimeUpdate();
}
}
void
MediaDecoder::DurationChanged()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown) {
return;
}
double oldDuration = mDuration;
if (IsInfinite()) {
mDuration = std::numeric_limits<double>::infinity();
} else if (mExplicitDuration.Ref().isSome()) {
mDuration = mExplicitDuration.Ref().ref();
} else if (mStateMachineDuration.Ref().isSome()) {
mDuration = mStateMachineDuration.Ref().ref().ToSeconds();
}
if (mDuration == oldDuration || IsNaN(mDuration)) {
return;
}
DECODER_LOG("Duration changed to %f", mDuration);
// Duration has changed so we should recompute playback rate
UpdatePlaybackRate();
// See https://www.w3.org/Bugs/Public/show_bug.cgi?id=28822 for a discussion
// of whether we should fire durationchange on explicit infinity.
if (mFiredMetadataLoaded &&
(!mozilla::IsInfinite<double>(mDuration) || mExplicitDuration.Ref().isSome())) {
mOwner->DispatchAsyncEvent(NS_LITERAL_STRING("durationchange"));
}
if (CurrentPosition() > TimeUnit::FromSeconds(mDuration).ToMicroseconds()) {
Seek(mDuration, SeekTarget::Accurate);
}
}
void
MediaDecoder::SetElementVisibility(bool aIsVisible)
{
MOZ_ASSERT(NS_IsMainThread());
mIsVisible = aIsVisible;
}
void
MediaDecoder::UpdateEstimatedMediaDuration(int64_t aDuration)
{
MOZ_ASSERT(NS_IsMainThread());
if (mPlayState <= PLAY_STATE_LOADING) {
return;
}
// The duration is only changed if its significantly different than the
// the current estimate, as the incoming duration is an estimate and so
// often is unstable as more data is read and the estimate is updated.
// Can result in a durationchangeevent. aDuration is in microseconds.
if (mEstimatedDuration.Ref().isSome() &&
mozilla::Abs(mEstimatedDuration.Ref().ref().ToMicroseconds() - aDuration) < ESTIMATED_DURATION_FUZZ_FACTOR_USECS) {
return;
}
mEstimatedDuration = Some(TimeUnit::FromMicroseconds(aDuration));
}
void
MediaDecoder::SetMediaSeekable(bool aMediaSeekable) {
MOZ_ASSERT(NS_IsMainThread());
mMediaSeekable = aMediaSeekable;
}
void
MediaDecoder::SetMediaSeekableOnlyInBufferedRanges(bool aMediaSeekableOnlyInBufferedRanges){
MOZ_ASSERT(NS_IsMainThread());
mMediaSeekableOnlyInBufferedRanges = aMediaSeekableOnlyInBufferedRanges;
}
bool
MediaDecoder::IsTransportSeekable()
{
MOZ_ASSERT(NS_IsMainThread());
return GetResource()->IsTransportSeekable();
}
bool
MediaDecoder::IsMediaSeekable()
{
MOZ_ASSERT(NS_IsMainThread());
NS_ENSURE_TRUE(GetStateMachine(), false);
return mMediaSeekable;
}
bool
MediaDecoder::IsMediaSeekableOnlyInBufferedRanges()
{
MOZ_ASSERT(NS_IsMainThread());
return mMediaSeekableOnlyInBufferedRanges;
}
media::TimeIntervals
MediaDecoder::GetSeekable()
{
MOZ_ASSERT(NS_IsMainThread());
// 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.) or in cue-less WebMs
if (IsMediaSeekableOnlyInBufferedRanges()) {
return GetBuffered();
} else if (!IsMediaSeekable()) {
return media::TimeIntervals();
} else if (!IsTransportSeekable()) {
return GetBuffered();
} else {
return media::TimeIntervals(
media::TimeInterval(media::TimeUnit::FromMicroseconds(0),
IsInfinite() ?
media::TimeUnit::FromInfinity() :
media::TimeUnit::FromSeconds(GetDuration())));
}
}
void
MediaDecoder::SetFragmentEndTime(double aTime)
{
MOZ_ASSERT(NS_IsMainThread());
if (mDecoderStateMachine) {
mDecoderStateMachine->DispatchSetFragmentEndTime(static_cast<int64_t>(aTime * USECS_PER_S));
}
}
void
MediaDecoder::Suspend()
{
MOZ_ASSERT(NS_IsMainThread());
if (mResource) {
mResource->Suspend(true);
}
}
void
MediaDecoder::Resume()
{
MOZ_ASSERT(NS_IsMainThread());
if (mResource) {
mResource->Resume();
}
}
void
MediaDecoder::SetLoadInBackground(bool aLoadInBackground)
{
MOZ_ASSERT(NS_IsMainThread());
if (mResource) {
mResource->SetLoadInBackground(aLoadInBackground);
}
}
void
MediaDecoder::SetPlaybackRate(double aPlaybackRate)
{
MOZ_ASSERT(NS_IsMainThread());
mPlaybackRate = aPlaybackRate;
if (mPlaybackRate == 0.0) {
mPausedForPlaybackRateNull = true;
Pause();
} else if (mPausedForPlaybackRateNull) {
// Play() uses mPausedForPlaybackRateNull value, so must reset it first
mPausedForPlaybackRateNull = false;
// If the playbackRate is no longer null, restart the playback, iff the
// media was playing.
if (!mOwner->GetPaused()) {
Play();
}
}
}
void
MediaDecoder::SetPreservesPitch(bool aPreservesPitch)
{
MOZ_ASSERT(NS_IsMainThread());
mPreservesPitch = aPreservesPitch;
}
void
MediaDecoder::SetStateMachine(MediaDecoderStateMachine* aStateMachine)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT_IF(aStateMachine, !mDecoderStateMachine);
mDecoderStateMachine = aStateMachine;
if (mDecoderStateMachine) {
mStateMachineDuration.Connect(mDecoderStateMachine->CanonicalDuration());
mBuffered.Connect(mDecoderStateMachine->CanonicalBuffered());
mStateMachineIsShutdown.Connect(mDecoderStateMachine->CanonicalIsShutdown());
mNextFrameStatus.Connect(mDecoderStateMachine->CanonicalNextFrameStatus());
mCurrentPosition.Connect(mDecoderStateMachine->CanonicalCurrentPosition());
mPlaybackPosition.Connect(mDecoderStateMachine->CanonicalPlaybackOffset());
mIsAudioDataAudible.Connect(mDecoderStateMachine->CanonicalIsAudioDataAudible());
} else {
mStateMachineDuration.DisconnectIfConnected();
mBuffered.DisconnectIfConnected();
mStateMachineIsShutdown.DisconnectIfConnected();
mNextFrameStatus.DisconnectIfConnected();
mCurrentPosition.DisconnectIfConnected();
mPlaybackPosition.DisconnectIfConnected();
mIsAudioDataAudible.DisconnectIfConnected();
}
}
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.
media::TimeIntervals
MediaDecoder::GetBuffered() {
MOZ_ASSERT(NS_IsMainThread());
return mBuffered.Ref();
}
size_t
MediaDecoder::SizeOfVideoQueue() {
MOZ_ASSERT(NS_IsMainThread());
if (mDecoderStateMachine) {
return mDecoderStateMachine->SizeOfVideoQueue();
}
return 0;
}
size_t
MediaDecoder::SizeOfAudioQueue() {
MOZ_ASSERT(NS_IsMainThread());
if (mDecoderStateMachine) {
return mDecoderStateMachine->SizeOfAudioQueue();
}
return 0;
}
void MediaDecoder::AddSizeOfResources(ResourceSizes* aSizes) {
MOZ_ASSERT(NS_IsMainThread());
if (GetResource()) {
aSizes->mByteSize += GetResource()->SizeOfIncludingThis(aSizes->mMallocSizeOf);
}
}
void
MediaDecoder::NotifyDataArrived() {
MOZ_ASSERT(NS_IsMainThread());
// Don't publish events since task queues might be shutting down.
if (mShuttingDown) {
return;
}
mDataArrivedEvent.Notify();
}
// Provide access to the state machine object
MediaDecoderStateMachine*
MediaDecoder::GetStateMachine() const {
MOZ_ASSERT(NS_IsMainThread());
return mDecoderStateMachine;
}
void
MediaDecoder::FireTimeUpdate()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown) {
return;
}
mOwner->FireTimeUpdate(true);
}
void
MediaDecoder::PinForSeek()
{
MOZ_ASSERT(NS_IsMainThread());
MediaResource* resource = GetResource();
if (!resource || mPinnedForSeek) {
return;
}
mPinnedForSeek = true;
resource->Pin();
}
void
MediaDecoder::UnpinForSeek()
{
MOZ_ASSERT(NS_IsMainThread());
MediaResource* resource = GetResource();
if (!resource || !mPinnedForSeek) {
return;
}
mPinnedForSeek = false;
resource->Unpin();
}
bool
MediaDecoder::CanPlayThrough()
{
MOZ_ASSERT(NS_IsMainThread());
NS_ENSURE_TRUE(mDecoderStateMachine, false);
return mDecoderStateMachine->IsRealTime() || GetStatistics().CanPlayThrough();
}
#ifdef MOZ_EME
RefPtr<MediaDecoder::CDMProxyPromise>
MediaDecoder::RequestCDMProxy() const
{
return mCDMProxyPromise;
}
void
MediaDecoder::SetCDMProxy(CDMProxy* aProxy)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aProxy);
mCDMProxyPromiseHolder.ResolveIfExists(aProxy, __func__);
}
#endif
#ifdef MOZ_RAW
bool
MediaDecoder::IsRawEnabled()
{
return Preferences::GetBool("media.raw.enabled");
}
#endif
bool
MediaDecoder::IsOpusEnabled()
{
return Preferences::GetBool("media.opus.enabled");
}
bool
MediaDecoder::IsOggEnabled()
{
return Preferences::GetBool("media.ogg.enabled");
}
bool
MediaDecoder::IsWaveEnabled()
{
return Preferences::GetBool("media.wave.enabled");
}
bool
MediaDecoder::IsWebMEnabled()
{
return Preferences::GetBool("media.webm.enabled");
}
#ifdef NECKO_PROTOCOL_rtsp
bool
MediaDecoder::IsRtspEnabled()
{
//Currently the Rtsp decoded by omx.
return (Preferences::GetBool("media.rtsp.enabled", false) && IsOmxEnabled());
}
#endif
#ifdef MOZ_OMX_DECODER
bool
MediaDecoder::IsOmxEnabled()
{
return Preferences::GetBool("media.omx.enabled", false);
}
#endif
#ifdef MOZ_ANDROID_OMX
bool
MediaDecoder::IsAndroidMediaPluginEnabled()
{
return AndroidBridge::Bridge() &&
AndroidBridge::Bridge()->GetAPIVersion() < 16 &&
Preferences::GetBool("media.plugins.enabled");
}
#endif
NS_IMETHODIMP
MediaMemoryTracker::CollectReports(nsIHandleReportCallback* aHandleReport,
nsISupports* aData, bool aAnonymize)
{
int64_t video = 0, audio = 0;
// NB: When resourceSizes' ref count goes to 0 the promise will report the
// resources memory and finish the asynchronous memory report.
RefPtr<MediaDecoder::ResourceSizes> resourceSizes =
new MediaDecoder::ResourceSizes(MediaMemoryTracker::MallocSizeOf);
nsCOMPtr<nsIHandleReportCallback> handleReport = aHandleReport;
nsCOMPtr<nsISupports> data = aData;
resourceSizes->Promise()->Then(
AbstractThread::MainThread(), __func__,
[handleReport, data] (size_t size) {
handleReport->Callback(
EmptyCString(), NS_LITERAL_CSTRING("explicit/media/resources"),
KIND_HEAP, UNITS_BYTES, size,
NS_LITERAL_CSTRING("Memory used by media resources including "
"streaming buffers, caches, etc."),
data);
nsCOMPtr<nsIMemoryReporterManager> imgr =
do_GetService("@mozilla.org/memory-reporter-manager;1");
if (imgr) {
imgr->EndReport();
}
},
[] (size_t) { /* unused reject function */ });
DecodersArray& decoders = Decoders();
for (size_t i = 0; i < decoders.Length(); ++i) {
MediaDecoder* decoder = decoders[i];
video += decoder->SizeOfVideoQueue();
audio += decoder->SizeOfAudioQueue();
decoder->AddSizeOfResources(resourceSizes);
}
#define REPORT(_path, _amount, _desc) \
do { \
nsresult rv; \
rv = aHandleReport->Callback(EmptyCString(), NS_LITERAL_CSTRING(_path), \
KIND_HEAP, UNITS_BYTES, _amount, \
NS_LITERAL_CSTRING(_desc), aData); \
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.");
#undef REPORT
return NS_OK;
}
MediaDecoderOwner*
MediaDecoder::GetOwner()
{
MOZ_ASSERT(NS_IsMainThread());
// mOwner is valid until shutdown.
return !mShuttingDown ? mOwner : nullptr;
}
void
MediaDecoder::ConstructMediaTracks()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown || mMediaTracksConstructed || !mInfo) {
return;
}
HTMLMediaElement* element = mOwner->GetMediaElement();
if (!element) {
return;
}
mMediaTracksConstructed = true;
AudioTrackList* audioList = element->AudioTracks();
if (audioList && mInfo->HasAudio()) {
const TrackInfo& info = mInfo->mAudio;
RefPtr<AudioTrack> track = MediaTrackList::CreateAudioTrack(
info.mId, info.mKind, info.mLabel, info.mLanguage, info.mEnabled);
audioList->AddTrack(track);
}
VideoTrackList* videoList = element->VideoTracks();
if (videoList && mInfo->HasVideo()) {
const TrackInfo& info = mInfo->mVideo;
RefPtr<VideoTrack> track = MediaTrackList::CreateVideoTrack(
info.mId, info.mKind, info.mLabel, info.mLanguage);
videoList->AddTrack(track);
track->SetEnabledInternal(info.mEnabled, MediaTrack::FIRE_NO_EVENTS);
}
}
void
MediaDecoder::RemoveMediaTracks()
{
MOZ_ASSERT(NS_IsMainThread());
if (mShuttingDown) {
return;
}
HTMLMediaElement* element = mOwner->GetMediaElement();
if (!element) {
return;
}
AudioTrackList* audioList = element->AudioTracks();
if (audioList) {
audioList->RemoveTracks();
}
VideoTrackList* videoList = element->VideoTracks();
if (videoList) {
videoList->RemoveTracks();
}
mMediaTracksConstructed = false;
}
MediaDecoderOwner::NextFrameStatus
MediaDecoder::NextFrameBufferedStatus()
{
MOZ_ASSERT(NS_IsMainThread());
// Next frame hasn't been decoded yet.
// Use the buffered range to consider if we have the next frame available.
media::TimeUnit currentPosition =
media::TimeUnit::FromMicroseconds(CurrentPosition());
media::TimeInterval interval(currentPosition,
currentPosition + media::TimeUnit::FromMicroseconds(DEFAULT_NEXT_FRAME_AVAILABLE_BUFFERED));
return GetBuffered().Contains(interval)
? MediaDecoderOwner::NEXT_FRAME_AVAILABLE
: MediaDecoderOwner::NEXT_FRAME_UNAVAILABLE;
}
void
MediaDecoder::DumpDebugInfo()
{
DUMP_LOG("metadata: channels=%u rate=%u hasAudio=%d hasVideo=%d, "
"state: mPlayState=%s mIsDormant=%d, mShuttingDown=%d",
mInfo ? mInfo->mAudio.mChannels : 0, mInfo ? mInfo->mAudio.mRate : 0,
mInfo ? mInfo->HasAudio() : 0, mInfo ? mInfo->HasVideo() : 0,
PlayStateStr(), mIsDormant, mShuttingDown);
nsString str;
GetMozDebugReaderData(str);
DUMP_LOG("reader data:\n%s", NS_ConvertUTF16toUTF8(str).get());
if (!mShuttingDown && GetStateMachine()) {
GetStateMachine()->DumpDebugInfo();
}
}
void
MediaDecoder::NotifyAudibleStateChanged()
{
MOZ_ASSERT(!mShuttingDown);
mOwner->SetAudibleState(mIsAudioDataAudible);
}
MediaMemoryTracker::MediaMemoryTracker()
{
}
void
MediaMemoryTracker::InitMemoryReporter()
{
RegisterWeakAsyncMemoryReporter(this);
}
MediaMemoryTracker::~MediaMemoryTracker()
{
UnregisterWeakMemoryReporter(this);
}
} // namespace mozilla
// avoid redefined macro in unified build
#undef DECODER_LOG
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