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/*
* 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.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASTREAM_MEDIA_STREAM_TRACK_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASTREAM_MEDIA_STREAM_TRACK_H_
#include <memory>
#include "third_party/blink/renderer/bindings/core/v8/active_script_wrappable.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/core/dom/context_lifecycle_observer.h"
#include "third_party/blink/renderer/modules/event_target_modules.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_descriptor.h"
#include "third_party/blink/renderer/platform/mediastream/media_stream_source.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
namespace blink {
class AudioSourceProvider;
class ImageCapture;
class MediaTrackCapabilities;
class MediaTrackConstraints;
class MediaStream;
class MediaTrackSettings;
class ScriptPromiseResolver;
class ScriptState;
class MODULES_EXPORT MediaStreamTrack
: public EventTargetWithInlineData,
public ActiveScriptWrappable<MediaStreamTrack>,
public ContextLifecycleObserver,
public MediaStreamSource::Observer {
USING_GARBAGE_COLLECTED_MIXIN(MediaStreamTrack);
DEFINE_WRAPPERTYPEINFO();
public:
static MediaStreamTrack* Create(ExecutionContext*, MediaStreamComponent*);
MediaStreamTrack(ExecutionContext*, MediaStreamComponent*);
MediaStreamTrack(ExecutionContext*,
MediaStreamComponent*,
MediaStreamSource::ReadyState,
bool stopped);
~MediaStreamTrack() override;
String kind() const;
String id() const;
String label() const;
bool enabled() const;
void setEnabled(bool);
bool muted() const;
String ContentHint() const;
void SetContentHint(const String&);
String readyState() const;
void stopTrack(ExecutionContext*);
virtual MediaStreamTrack* clone(ScriptState*);
// This function is called when constrains have been successfully applied.
// Called from UserMediaRequest when it succeeds. It is not IDL-exposed.
void SetConstraints(const WebMediaConstraints&);
MediaTrackCapabilities* getCapabilities() const;
MediaTrackConstraints* getConstraints() const;
MediaTrackSettings* getSettings() const;
ScriptPromise applyConstraints(ScriptState*, const MediaTrackConstraints*);
DEFINE_ATTRIBUTE_EVENT_LISTENER(mute, kMute);
DEFINE_ATTRIBUTE_EVENT_LISTENER(unmute, kUnmute);
DEFINE_ATTRIBUTE_EVENT_LISTENER(ended, kEnded);
MediaStreamComponent* Component() { return component_; }
bool Ended() const;
void RegisterMediaStream(MediaStream*);
void UnregisterMediaStream(MediaStream*);
// EventTarget
const AtomicString& InterfaceName() const override;
ExecutionContext* GetExecutionContext() const override;
// ScriptWrappable
bool HasPendingActivity() const final;
// ContextLifecycleObserver
void ContextDestroyed(ExecutionContext*) override;
std::unique_ptr<AudioSourceProvider> CreateWebAudioSource();
void Trace(blink::Visitor*) override;
private:
friend class CanvasCaptureMediaStreamTrack;
// MediaStreamSourceObserver
void SourceChangedState() override;
void PropagateTrackEnded();
void applyConstraintsImageCapture(ScriptPromiseResolver*,
const MediaTrackConstraints*);
MediaStreamSource::ReadyState ready_state_;
HeapHashSet<Member<MediaStream>> registered_media_streams_;
bool is_iterating_registered_media_streams_ = false;
bool stopped_;
Member<MediaStreamComponent> component_;
Member<ImageCapture> image_capture_;
};
typedef HeapVector<Member<MediaStreamTrack>> MediaStreamTrackVector;
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_MEDIASTREAM_MEDIA_STREAM_TRACK_H_