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comparison: content/media/webaudio/AudioDestinationNode.h
content/media/webaudio/AudioDestinationNode.h
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim:set ts=2 sw=2 sts=2 et cindent: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef AudioDestinationNode_h_ | |
| 8 #define AudioDestinationNode_h_ | |
| 9 | |
| 10 #include "mozilla/dom/AudioChannelBinding.h" | |
| 11 #include "AudioNode.h" | |
| 12 #include "nsIDOMEventListener.h" | |
| 13 #include "nsIAudioChannelAgent.h" | |
| 14 #include "AudioChannelCommon.h" | |
| 15 #include "nsWeakReference.h" | |
| 16 | |
| 17 namespace mozilla { | |
| 18 namespace dom { | |
| 19 | |
| 20 class AudioContext; | |
| 21 | |
| 22 class AudioDestinationNode : public AudioNode | |
| 23 , public nsIDOMEventListener | |
| 24 , public nsIAudioChannelAgentCallback | |
| 25 , public nsSupportsWeakReference | |
| 26 , public MainThreadMediaStreamListener | |
| 27 { | |
| 28 public: | |
| 29 // This node type knows what MediaStreamGraph to use based on | |
| 30 // whether it's in offline mode. | |
| 31 AudioDestinationNode(AudioContext* aContext, | |
| 32 bool aIsOffline, | |
| 33 AudioChannel aChannel = AudioChannel::Normal, | |
| 34 uint32_t aNumberOfChannels = 0, | |
| 35 uint32_t aLength = 0, | |
| 36 float aSampleRate = 0.0f); | |
| 37 | |
| 38 virtual void DestroyMediaStream() MOZ_OVERRIDE; | |
| 39 | |
| 40 NS_DECL_ISUPPORTS_INHERITED | |
| 41 NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(AudioDestinationNode, AudioNode) | |
| 42 NS_DECL_NSIAUDIOCHANNELAGENTCALLBACK | |
| 43 | |
| 44 virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE; | |
| 45 | |
| 46 virtual uint16_t NumberOfOutputs() const MOZ_FINAL MOZ_OVERRIDE | |
| 47 { | |
| 48 return 0; | |
| 49 } | |
| 50 | |
| 51 uint32_t MaxChannelCount() const; | |
| 52 virtual void SetChannelCount(uint32_t aChannelCount, | |
| 53 ErrorResult& aRv) MOZ_OVERRIDE; | |
| 54 | |
| 55 void Mute(); | |
| 56 void Unmute(); | |
| 57 | |
| 58 void StartRendering(); | |
| 59 | |
| 60 void OfflineShutdown(); | |
| 61 | |
| 62 // nsIDOMEventListener | |
| 63 NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent); | |
| 64 | |
| 65 AudioChannel MozAudioChannelType() const; | |
| 66 void SetMozAudioChannelType(AudioChannel aValue, ErrorResult& aRv); | |
| 67 | |
| 68 virtual void NotifyMainThreadStateChanged() MOZ_OVERRIDE; | |
| 69 void FireOfflineCompletionEvent(); | |
| 70 | |
| 71 // An amount that should be added to the MediaStream's current time to | |
| 72 // get the AudioContext.currentTime. | |
| 73 double ExtraCurrentTime(); | |
| 74 | |
| 75 // When aIsOnlyNode is true, this is the only node for the AudioContext. | |
| 76 void SetIsOnlyNodeForContext(bool aIsOnlyNode); | |
| 77 | |
| 78 virtual const char* NodeType() const | |
| 79 { | |
| 80 return "AudioDestinationNode"; | |
| 81 } | |
| 82 | |
| 83 virtual size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE; | |
| 84 virtual size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE; | |
| 85 | |
| 86 private: | |
| 87 bool CheckAudioChannelPermissions(AudioChannel aValue); | |
| 88 void CreateAudioChannelAgent(); | |
| 89 | |
| 90 void SetCanPlay(bool aCanPlay); | |
| 91 | |
| 92 void NotifyStableState(); | |
| 93 void ScheduleStableStateNotification(); | |
| 94 | |
| 95 SelfReference<AudioDestinationNode> mOfflineRenderingRef; | |
| 96 uint32_t mFramesToProduce; | |
| 97 | |
| 98 nsCOMPtr<nsIAudioChannelAgent> mAudioChannelAgent; | |
| 99 | |
| 100 // Audio Channel Type. | |
| 101 AudioChannel mAudioChannel; | |
| 102 bool mIsOffline; | |
| 103 bool mHasFinished; | |
| 104 | |
| 105 TimeStamp mStartedBlockingDueToBeingOnlyNode; | |
| 106 double mExtraCurrentTime; | |
| 107 double mExtraCurrentTimeSinceLastStartedBlocking; | |
| 108 bool mExtraCurrentTimeUpdatedSinceLastStableState; | |
| 109 }; | |
| 110 | |
| 111 } | |
| 112 } | |
| 113 | |
| 114 #endif | |
| 115 |
