1 /* 2 * Copyright (C) 2011 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef MediaController_h 27 #define MediaController_h 28 29 #include "core/events/EventTarget.h" 30 #include "core/html/HTMLMediaElement.h" 31 #include "wtf/LinkedHashSet.h" 32 #include "wtf/PassRefPtr.h" 33 #include "wtf/RefCounted.h" 34 35 namespace blink { 36 37 class Clock; 38 class ExceptionState; 39 class ExecutionContext; 40 class GenericEventQueue; 41 42 class MediaController FINAL : public RefCountedWillBeGarbageCollectedFinalized<MediaController>, public EventTargetWithInlineData { 43 DEFINE_WRAPPERTYPEINFO(); 44 REFCOUNTED_EVENT_TARGET(MediaController); 45 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MediaController); 46 public: 47 static PassRefPtrWillBeRawPtr<MediaController> create(ExecutionContext*); 48 virtual ~MediaController(); 49 50 void addMediaElement(HTMLMediaElement*); 51 void removeMediaElement(HTMLMediaElement*); 52 53 PassRefPtrWillBeRawPtr<TimeRanges> buffered() const; 54 PassRefPtrWillBeRawPtr<TimeRanges> seekable() const; 55 PassRefPtrWillBeRawPtr<TimeRanges> played(); 56 57 double duration() const; 58 double currentTime() const; 59 void setCurrentTime(double); 60 paused()61 bool paused() const { return m_paused; } 62 void play(); 63 void pause(); 64 void unpause(); 65 defaultPlaybackRate()66 double defaultPlaybackRate() const { return m_defaultPlaybackRate; } 67 void setDefaultPlaybackRate(double); 68 69 double playbackRate() const; 70 void setPlaybackRate(double); 71 volume()72 double volume() const { return m_volume; } 73 void setVolume(double, ExceptionState&); 74 muted()75 bool muted() const { return m_muted; } 76 void setMuted(bool); 77 78 typedef HTMLMediaElement::ReadyState ReadyState; readyState()79 ReadyState readyState() const { return m_readyState; } 80 81 enum PlaybackState { WAITING, PLAYING, ENDED }; 82 const AtomicString& playbackState() const; 83 84 bool isRestrained() const; 85 bool isBlocked() const; 86 87 #if !ENABLE(OILPAN) clearExecutionContext()88 void clearExecutionContext() { m_executionContext = nullptr; } 89 #endif 90 91 virtual void trace(Visitor*) OVERRIDE; 92 93 private: 94 MediaController(ExecutionContext*); 95 void reportControllerState(); 96 void updateReadyState(); 97 void updatePlaybackState(); 98 void updateMediaElements(); 99 void bringElementUpToSpeed(HTMLMediaElement*); 100 void scheduleEvent(const AtomicString& eventName); 101 void clearPositionTimerFired(Timer<MediaController>*); 102 bool hasEnded() const; 103 void scheduleTimeupdateEvent(); 104 void timeupdateTimerFired(Timer<MediaController>*); 105 void startTimeupdateTimer(); 106 107 // EventTarget 108 virtual const AtomicString& interfaceName() const OVERRIDE; executionContext()109 virtual ExecutionContext* executionContext() const OVERRIDE { return m_executionContext; } 110 111 friend class HTMLMediaElement; 112 friend class MediaControllerEventListener; 113 // FIXME: A MediaController should ideally keep an otherwise 114 // unreferenced slaved media element alive. When Oilpan is 115 // enabled by default, consider making the hash set references 116 // strong to accomplish that. crbug.com/383072 117 typedef WillBeHeapLinkedHashSet<RawPtrWillBeWeakMember<HTMLMediaElement> > MediaElementSequence; 118 MediaElementSequence m_mediaElements; 119 bool m_paused; 120 double m_defaultPlaybackRate; 121 double m_volume; 122 mutable double m_position; 123 bool m_muted; 124 ReadyState m_readyState; 125 PlaybackState m_playbackState; 126 OwnPtrWillBeMember<GenericEventQueue> m_pendingEventsQueue; 127 mutable Timer<MediaController> m_clearPositionTimer; 128 OwnPtr<Clock> m_clock; 129 RawPtrWillBeWeakMember<ExecutionContext> m_executionContext; 130 Timer<MediaController> m_timeupdateTimer; 131 double m_previousTimeupdateTime; 132 }; 133 134 } // namespace blink 135 136 #endif // MediaController_h 137