nsresult
ChannelMediaDecoder::Load(nsIChannel* aChannel,
bool aIsPrivateBrowsing,
nsIStreamListener** aStreamListener)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!mResource);
MOZ_ASSERT(aStreamListener);
AbstractThread::AutoEnter context(AbstractMainThread());
mResource =
BaseMediaResource::Create(mResourceCallback, aChannel, aIsPrivateBrowsing);
if (!mResource) {
return NS_ERROR_FAILURE;
}
DDLINKCHILD("resource", mResource.get());
nsresult rv = MediaShutdownManager::Instance().Register(this);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
rv = mResource->Open(aStreamListener);
NS_ENSURE_SUCCESS(rv, rv);
SetStateMachine(CreateStateMachine());
NS_ENSURE_TRUE(GetStateMachine(), NS_ERROR_FAILURE);
GetStateMachine()->DispatchIsLiveStream(mResource->IsLiveStream());
return InitializeStateMachine();
}
nsresult
ChannelMediaDecoder::Load(BaseMediaResource* aOriginal)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!mResource);
AbstractThread::AutoEnter context(AbstractMainThread());
mResource = aOriginal->CloneData(mResourceCallback);
if (!mResource) {
return NS_ERROR_FAILURE;
}
DDLINKCHILD("resource", mResource.get());
nsresult rv = MediaShutdownManager::Instance().Register(this);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
SetStateMachine(CreateStateMachine());
NS_ENSURE_TRUE(GetStateMachine(), NS_ERROR_FAILURE);
GetStateMachine()->DispatchIsLiveStream(mResource->IsLiveStream());
return InitializeStateMachine();
}
void
ChannelMediaDecoder::NotifyDownloadEnded(nsresult aStatus)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_DIAGNOSTIC_ASSERT(!IsShutdown());
AbstractThread::AutoEnter context(AbstractMainThread());
LOG("NotifyDownloadEnded, status=%" PRIx32, static_cast<uint32_t>(aStatus));
if (aStatus == NS_BINDING_ABORTED) {
// Download has been cancelled by user.
GetOwner()->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
ChannelMediaDecoder::DownloadProgressed()
{
MOZ_ASSERT(NS_IsMainThread());
AbstractThread::AutoEnter context(AbstractMainThread());
MediaDecoder::DownloadProgressed();
UpdatePlaybackRate();
mResource->ThrottleReadahead(ShouldThrottleDownload());
}
void
ChannelMediaDecoder::DurationChanged()
{
MOZ_ASSERT(NS_IsMainThread());
AbstractThread::AutoEnter context(AbstractMainThread());
MediaDecoder::DurationChanged();
// Duration has changed so we should recompute playback rate
UpdatePlaybackRate();
}
void
AudioDestinationNode::NotifyMainThreadStreamFinished()
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(mStream->IsFinished());
if (mIsOffline) {
AbstractMainThread()->Dispatch(
NewRunnableMethod("dom::AudioDestinationNode::FireOfflineCompletionEvent",
this,
&AudioDestinationNode::FireOfflineCompletionEvent));
}
}
void
ChannelMediaDecoder::NotifyBytesConsumed(int64_t aBytes, int64_t aOffset)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_DIAGNOSTIC_ASSERT(!IsShutdown());
AbstractThread::AutoEnter context(AbstractMainThread());
if (mIgnoreProgressData) {
return;
}
MOZ_ASSERT(GetStateMachine());
if (aOffset >= mDecoderPosition) {
mPlaybackStatistics.AddBytes(aBytes);
}
mDecoderPosition = aOffset + aBytes;
}
void
ChannelMediaDecoder::DurationChanged()
{
MOZ_ASSERT(NS_IsMainThread());
AbstractThread::AutoEnter context(AbstractMainThread());
MediaDecoder::DurationChanged();
// Duration has changed so we should recompute playback rate
nsCOMPtr<nsIRunnable> r =
NS_NewRunnableFunction("ChannelMediaDecoder::UpdatePlaybackRate", [
stats = mPlaybackStatistics,
res = RefPtr<BaseMediaResource>(mResource),
duration = mDuration
]() {
auto rate = ComputePlaybackRate(stats, res, duration);
UpdatePlaybackRate(rate, res);
});
nsresult rv = GetStateMachine()->OwnerThread()->Dispatch(r.forget());
MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv));
Unused << rv;
}
void
ChannelMediaDecoder::NotifyDownloadEnded(nsresult aStatus)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_DIAGNOSTIC_ASSERT(!IsShutdown());
AbstractThread::AutoEnter context(AbstractMainThread());
LOG("NotifyDownloadEnded, status=%" PRIx32, static_cast<uint32_t>(aStatus));
if (NS_SUCCEEDED(aStatus)) {
// Download ends successfully. This is a stream with a finite length.
GetStateMachine()->DispatchIsLiveStream(false);
}
MediaDecoderOwner* owner = GetOwner();
if (NS_SUCCEEDED(aStatus) || aStatus == NS_BASE_STREAM_CLOSED) {
nsCOMPtr<nsIRunnable> r =
NS_NewRunnableFunction("ChannelMediaDecoder::UpdatePlaybackRate", [
stats = mPlaybackStatistics,
res = RefPtr<BaseMediaResource>(mResource),
duration = mDuration
]() {
auto rate = ComputePlaybackRate(stats, res, duration);
UpdatePlaybackRate(rate, res);
});
nsresult rv = GetStateMachine()->OwnerThread()->Dispatch(r.forget());
MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(rv));
Unused << rv;
owner->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.
owner->NotifySuspendedByCache(true);
} else if (aStatus == NS_BINDING_ABORTED) {
// Download has been cancelled by user.
owner->LoadAborted();
} else {
NetworkError(MediaResult(aStatus, "Download aborted"));
}
}