1 /* 2 * Copyright (C) 2011 Google Inc. All rights reserved. 3 * Copyright (C) 2011 Ericsson AB. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 21 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 23 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef MediaStreamTrack_h 27 #define MediaStreamTrack_h 28 29 #include "bindings/v8/ScriptWrappable.h" 30 #include "core/dom/ActiveDOMObject.h" 31 #include "modules/EventTargetModules.h" 32 #include "modules/mediastream/SourceInfo.h" 33 #include "platform/mediastream/MediaStreamDescriptor.h" 34 #include "platform/mediastream/MediaStreamSource.h" 35 #include "wtf/PassOwnPtr.h" 36 #include "wtf/RefCounted.h" 37 #include "wtf/RefPtr.h" 38 #include "wtf/Vector.h" 39 #include "wtf/text/WTFString.h" 40 41 namespace WebCore { 42 43 class AudioSourceProvider; 44 class ExceptionState; 45 class MediaStreamComponent; 46 class MediaStreamTrackSourcesCallback; 47 48 class MediaStreamTrack FINAL : public RefCountedWillBeRefCountedGarbageCollected<MediaStreamTrack>, public ScriptWrappable, public ActiveDOMObject, public EventTargetWithInlineData, public MediaStreamSource::Observer { 49 REFCOUNTED_EVENT_TARGET(MediaStreamTrack); 50 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MediaStreamTrack); 51 public: 52 static PassRefPtrWillBeRawPtr<MediaStreamTrack> create(ExecutionContext*, MediaStreamComponent*); 53 virtual ~MediaStreamTrack(); 54 55 String kind() const; 56 String id() const; 57 String label() const; 58 59 bool enabled() const; 60 void setEnabled(bool); 61 62 String readyState() const; 63 64 static void getSources(ExecutionContext*, PassOwnPtr<MediaStreamTrackSourcesCallback>, ExceptionState&); 65 void stopTrack(ExceptionState&); 66 PassRefPtrWillBeRawPtr<MediaStreamTrack> clone(ExecutionContext*); 67 68 DEFINE_ATTRIBUTE_EVENT_LISTENER(mute); 69 DEFINE_ATTRIBUTE_EVENT_LISTENER(unmute); 70 DEFINE_ATTRIBUTE_EVENT_LISTENER(ended); 71 72 MediaStreamComponent* component(); 73 bool ended() const; 74 75 void registerMediaStream(MediaStream*); 76 void unregisterMediaStream(MediaStream*); 77 78 // EventTarget 79 virtual const AtomicString& interfaceName() const OVERRIDE; 80 virtual ExecutionContext* executionContext() const OVERRIDE; 81 82 // ActiveDOMObject 83 virtual void stop() OVERRIDE; 84 85 PassOwnPtr<AudioSourceProvider> createWebAudioSource(); 86 87 virtual void trace(Visitor*) OVERRIDE; 88 89 private: 90 MediaStreamTrack(ExecutionContext*, MediaStreamComponent*); 91 92 MediaStreamSource::ReadyState m_readyState; 93 94 // MediaStreamSourceObserver 95 virtual void sourceChangedState() OVERRIDE; 96 97 void propagateTrackEnded(); 98 WillBeHeapHashSet<RawPtrWillBeMember<MediaStream> > m_registeredMediaStreams; 99 bool m_isIteratingRegisteredMediaStreams; 100 101 bool m_stopped; 102 RefPtr<MediaStreamComponent> m_component; 103 }; 104 105 typedef WillBeHeapVector<RefPtrWillBeMember<MediaStreamTrack> > MediaStreamTrackVector; 106 107 } // namespace WebCore 108 109 #endif // MediaStreamTrack_h 110