PassRefPtr<MediaStreamAudioSourceNode> AudioContext::createMediaStreamSource(MediaStream* mediaStream, ExceptionCode& ec)
{
ASSERT(mediaStream);
if (!mediaStream) {
ec = INVALID_STATE_ERR;
return 0;
}
ASSERT(isMainThread());
lazyInitialize();
AudioSourceProvider* provider = 0;
MediaStreamTrackVector audioTracks = mediaStream->getAudioTracks();
if (mediaStream->isLocal() && audioTracks.size()) {
// Enable input for the specific local audio device specified in the MediaStreamSource.
RefPtr<MediaStreamTrack> localAudio = audioTracks[0];
MediaStreamSource* source = localAudio->component()->source();
destination()->enableInput(source->deviceId());
provider = destination()->localAudioInputProvider();
} else {
// FIXME: get a provider for non-local MediaStreams (like from a remote peer).
provider = 0;
}
RefPtr<MediaStreamAudioSourceNode> node = MediaStreamAudioSourceNode::create(this, mediaStream, provider);
// FIXME: Only stereo streams are supported right now. We should be able to accept multi-channel streams.
node->setFormat(2, sampleRate());
refNode(node.get()); // context keeps reference until node is disconnected
return node;
}
void MediaStream::removeRemoteTrack(MediaStreamComponent* component)
{
if (ended())
return;
MediaStreamTrackVector* tracks = 0;
switch (component->source()->type()) {
case MediaStreamSource::TypeAudio:
tracks = &m_audioTracks;
break;
case MediaStreamSource::TypeVideo:
tracks = &m_videoTracks;
break;
}
size_t index = notFound;
for (size_t i = 0; i < tracks->size(); ++i) {
if ((*tracks)[i]->component() == component) {
index = i;
break;
}
}
if (index == notFound)
return;
RefPtr<MediaStreamTrack> track = (*tracks)[index];
tracks->remove(index);
scheduleDispatchEvent(MediaStreamTrackEvent::create(eventNames().removetrackEvent, false, false, track));
}
void MediaStream::removeRemoteSource(MediaStreamSource* source)
{
if (ended())
return;
MediaStreamTrackVector* tracks = 0;
switch (source->type()) {
case MediaStreamSource::Audio:
tracks = &m_audioTracks;
break;
case MediaStreamSource::Video:
tracks = &m_videoTracks;
break;
}
size_t index = notFound;
for (size_t i = 0; i < tracks->size(); ++i) {
if ((*tracks)[i]->source() == source) {
index = i;
break;
}
}
if (index == notFound)
return;
m_descriptor->removeSource(source);
RefPtr<MediaStreamTrack> track = (*tracks)[index];
tracks->remove(index);
scheduleDispatchEvent(MediaStreamTrackEvent::create(eventNames().removetrackEvent, false, false, track));
}
PassRefPtr<MediaStreamAudioSourceNode> AudioContext::createMediaStreamSource(MediaStream* mediaStream, ExceptionState& es)
{
ASSERT(mediaStream);
if (!mediaStream) {
es.throwDOMException(InvalidStateError);
return 0;
}
ASSERT(isMainThread());
lazyInitialize();
AudioSourceProvider* provider = 0;
MediaStreamTrackVector audioTracks = mediaStream->getAudioTracks();
// FIXME: get a provider for non-local MediaStreams (like from a remote peer).
for (size_t i = 0; i < audioTracks.size(); ++i) {
RefPtr<MediaStreamTrack> localAudio = audioTracks[i];
if (localAudio->component()->audioSourceProvider()) {
provider = localAudio->component()->audioSourceProvider();
break;
}
}
RefPtr<MediaStreamAudioSourceNode> node = MediaStreamAudioSourceNode::create(this, mediaStream, provider);
// FIXME: Only stereo streams are supported right now. We should be able to accept multi-channel streams.
node->setFormat(2, sampleRate());
refNode(node.get()); // context keeps reference until node is disconnected
return node;
}
static bool containsSource(MediaStreamTrackVector& trackVector,
MediaStreamSource* source) {
for (size_t i = 0; i < trackVector.size(); ++i) {
if (source->id() == trackVector[i]->component()->source()->id())
return true;
}
return false;
}
PassRefPtr<MediaStream> MediaStream::create(ScriptExecutionContext* context, const MediaStreamTrackVector& tracks)
{
MediaStreamSourceVector audioSources;
MediaStreamSourceVector videoSources;
for (size_t i = 0; i < tracks.size(); ++i)
processTrack(tracks[i].get(), tracks[i]->kind() == "audio" ? audioSources : videoSources);
return createFromSourceVectors(context, audioSources, videoSources);
}
MediaStream::MediaStream(ScriptExecutionContext& context, const MediaStreamTrackVector& tracks)
: ContextDestructionObserver(&context)
, m_activityEventTimer(*this, &MediaStream::activityEventTimerFired)
{
// This constructor preserves MediaStreamTrack instances and must be used by calls originating
// from the JavaScript MediaStream constructor.
MediaStreamTrackPrivateVector trackPrivates;
trackPrivates.reserveCapacity(tracks.size());
for (auto& track : tracks) {
track->addObserver(this);
m_trackSet.add(track->id(), track);
trackPrivates.append(&track->privateTrack());
}
m_private = MediaStreamPrivate::create(trackPrivates);
setIsActive(m_private->active());
m_private->addObserver(*this);
MediaStreamRegistry::shared().registerStream(*this);
}
void MediaStream::removeRemoteTrack(MediaStreamComponent* component) {
DCHECK(component);
if (m_executionContext->isContextDestroyed())
return;
MediaStreamTrackVector* tracks = 0;
switch (component->source()->type()) {
case MediaStreamSource::TypeAudio:
tracks = &m_audioTracks;
break;
case MediaStreamSource::TypeVideo:
tracks = &m_videoTracks;
break;
}
size_t index = kNotFound;
for (size_t i = 0; i < tracks->size(); ++i) {
if ((*tracks)[i]->component() == component) {
index = i;
break;
}
}
if (index == kNotFound)
return;
m_descriptor->removeComponent(component);
MediaStreamTrack* track = (*tracks)[index];
track->unregisterMediaStream(this);
tracks->remove(index);
scheduleDispatchEvent(
MediaStreamTrackEvent::create(EventTypeNames::removetrack, track));
if (active() && emptyOrOnlyEndedTracks()) {
m_descriptor->setActive(false);
scheduleDispatchEvent(Event::create(EventTypeNames::inactive));
}
}