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;
}
Exemple #2
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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));
}
Exemple #3
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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;
}
Exemple #5
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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;
}
Exemple #6
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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);
}
Exemple #8
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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));
  }
}