Move MediaStream and MediaStreamTrack implementation from modules/mediastream to core/mediastream.

Source/modules/mediastream/MediaStreamTrack.cpp

-/*
- * Copyright (C) 2011 Google Inc. All rights reserved.
- * Copyright (C) 2011 Ericsson AB. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1.  Redistributions of source code must retain the above copyright
- *     notice, this list of conditions and the following disclaimer.
- * 2.  Redistributions in binary form must reproduce the above copyright
- *     notice, this list of conditions and the following disclaimer in the
- *     documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
- * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
- * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "modules/mediastream/MediaStreamTrack.h"
-
-#include "bindings/core/v8/ExceptionMessages.h"
-#include "core/dom/Document.h"
-#include "core/dom/ExceptionCode.h"
-#include "core/dom/ExecutionContext.h"
-#include "core/events/Event.h"
-#include "modules/mediastream/MediaStream.h"
-#include "modules/mediastream/MediaStreamTrackSourcesCallback.h"
-#include "modules/mediastream/MediaStreamTrackSourcesRequestImpl.h"
-#include "modules/mediastream/UserMediaController.h"
-#include "platform/mediastream/MediaStreamCenter.h"
-#include "platform/mediastream/MediaStreamComponent.h"
-#include "public/platform/WebSourceInfo.h"
-
-namespace blink {
-
-MediaStreamTrack* MediaStreamTrack::create(ExecutionContext* context, MediaStreamComponent* component)
-{
-    MediaStreamTrack* track = new MediaStreamTrack(context, component);
-    track->suspendIfNeeded();
-    return track;
-}
-
-MediaStreamTrack::MediaStreamTrack(ExecutionContext* context, MediaStreamComponent* component)
-    : ActiveDOMObject(context)
-    , m_readyState(MediaStreamSource::ReadyStateLive)
-    , m_isIteratingRegisteredMediaStreams(false)
-    , m_stopped(false)
-    , m_component(component)
-{
-    m_component->source()->addObserver(this);
-}
-
-MediaStreamTrack::~MediaStreamTrack()
-{
-}
-
-String MediaStreamTrack::kind() const
-{
-    DEFINE_STATIC_LOCAL(String, audioKind, ("audio"));
-    DEFINE_STATIC_LOCAL(String, videoKind, ("video"));
-
-    switch (m_component->source()->type()) {
-    case MediaStreamSource::TypeAudio:
-        return audioKind;
-    case MediaStreamSource::TypeVideo:
-        return videoKind;
-    }
-
-    ASSERT_NOT_REACHED();
-    return audioKind;
-}
-
-String MediaStreamTrack::id() const
-{
-    return m_component->id();
-}
-
-String MediaStreamTrack::label() const
-{
-    return m_component->source()->name();
-}
-
-bool MediaStreamTrack::enabled() const
-{
-    return m_component->enabled();
-}
-
-void MediaStreamTrack::setEnabled(bool enabled)
-{
-    if (enabled == m_component->enabled())
-        return;
-
-    m_component->setEnabled(enabled);
-
-    if (!ended())
-        MediaStreamCenter::instance().didSetMediaStreamTrackEnabled(m_component.get());
-}
-
-bool MediaStreamTrack::muted() const
-{
-    return m_component->muted();
-}
-
-String MediaStreamTrack::readyState() const
-{
-    if (ended())
-        return "ended";
-
-    switch (m_readyState) {
-    case MediaStreamSource::ReadyStateLive:
-        return "live";
-    case MediaStreamSource::ReadyStateMuted:
-        return "muted";
-    case MediaStreamSource::ReadyStateEnded:
-        return "ended";
-    }
-
-    ASSERT_NOT_REACHED();
-    return String();
-}
-
-void MediaStreamTrack::getSources(ExecutionContext* context, MediaStreamTrackSourcesCallback* callback, ExceptionState& exceptionState)
-{
-    LocalFrame* frame = toDocument(context)->frame();
-    UserMediaController* userMedia = UserMediaController::from(frame);
-    if (!userMedia) {
-        exceptionState.throwDOMException(NotSupportedError, "No sources controller available; is this a detached window?");
-        return;
-    }
-    MediaStreamTrackSourcesRequest* request = MediaStreamTrackSourcesRequestImpl::create(*context, callback);
-    userMedia->requestSources(request);
-}
-
-void MediaStreamTrack::stopTrack(ExceptionState& exceptionState)
-{
-    if (ended())
-        return;
-
-    m_readyState = MediaStreamSource::ReadyStateEnded;
-    MediaStreamCenter::instance().didStopMediaStreamTrack(component());
-    dispatchEvent(Event::create(EventTypeNames::ended));
-    propagateTrackEnded();
-}
-
-MediaStreamTrack* MediaStreamTrack::clone(ExecutionContext* context)
-{
-    MediaStreamComponent* clonedComponent = MediaStreamComponent::create(component()->source());
-    MediaStreamTrack* clonedTrack = MediaStreamTrack::create(context, clonedComponent);
-    MediaStreamCenter::instance().didCreateMediaStreamTrack(clonedComponent);
-    return clonedTrack;
-}
-
-bool MediaStreamTrack::ended() const
-{
-    return m_stopped || (m_readyState == MediaStreamSource::ReadyStateEnded);
-}
-
-void MediaStreamTrack::sourceChangedState()
-{
-    if (ended())
-        return;
-
-    m_readyState = m_component->source()->readyState();
-    switch (m_readyState) {
-    case MediaStreamSource::ReadyStateLive:
-        m_component->setMuted(false);
-        dispatchEvent(Event::create(EventTypeNames::unmute));
-        break;
-    case MediaStreamSource::ReadyStateMuted:
-        m_component->setMuted(true);
-        dispatchEvent(Event::create(EventTypeNames::mute));
-        break;
-    case MediaStreamSource::ReadyStateEnded:
-        dispatchEvent(Event::create(EventTypeNames::ended));
-        propagateTrackEnded();
-        break;
-    }
-}
-
-void MediaStreamTrack::propagateTrackEnded()
-{
-    RELEASE_ASSERT(!m_isIteratingRegisteredMediaStreams);
-    m_isIteratingRegisteredMediaStreams = true;
-    for (HeapHashSet<Member<MediaStream> >::iterator iter = m_registeredMediaStreams.begin(); iter != m_registeredMediaStreams.end(); ++iter)
-        (*iter)->trackEnded();
-    m_isIteratingRegisteredMediaStreams = false;
-}
-
-MediaStreamComponent* MediaStreamTrack::component()
-{
-    return m_component.get();
-}
-
-void MediaStreamTrack::stop()
-{
-    m_stopped = true;
-}
-
-PassOwnPtr<AudioSourceProvider> MediaStreamTrack::createWebAudioSource()
-{
-    return MediaStreamCenter::instance().createWebAudioSourceFromMediaStreamTrack(component());
-}
-
-void MediaStreamTrack::registerMediaStream(MediaStream* mediaStream)
-{
-    RELEASE_ASSERT(!m_isIteratingRegisteredMediaStreams);
-    RELEASE_ASSERT(!m_registeredMediaStreams.contains(mediaStream));
-    m_registeredMediaStreams.add(mediaStream);
-}
-
-void MediaStreamTrack::unregisterMediaStream(MediaStream* mediaStream)
-{
-    RELEASE_ASSERT(!m_isIteratingRegisteredMediaStreams);
-    HeapHashSet<Member<MediaStream> >::iterator iter = m_registeredMediaStreams.find(mediaStream);
-    RELEASE_ASSERT(iter != m_registeredMediaStreams.end());
-    m_registeredMediaStreams.remove(iter);
-}
-
-const AtomicString& MediaStreamTrack::interfaceName() const
-{
-    return EventTargetNames::MediaStreamTrack;
-}
-
-ExecutionContext* MediaStreamTrack::executionContext() const
-{
-    return ActiveDOMObject::executionContext();
-}
-
-void MediaStreamTrack::trace(Visitor* visitor)
-{
-    visitor->trace(m_registeredMediaStreams);
-    visitor->trace(m_component);
-    EventTargetWithInlineData::trace(visitor);
-    MediaStreamSource::Observer::trace(visitor);
-}
-
-} // namespace blink