1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/media/webaudio/AudioDestinationNode.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,115 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim:set ts=2 sw=2 sts=2 et cindent: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#ifndef AudioDestinationNode_h_
1.11 +#define AudioDestinationNode_h_
1.12 +
1.13 +#include "mozilla/dom/AudioChannelBinding.h"
1.14 +#include "AudioNode.h"
1.15 +#include "nsIDOMEventListener.h"
1.16 +#include "nsIAudioChannelAgent.h"
1.17 +#include "AudioChannelCommon.h"
1.18 +#include "nsWeakReference.h"
1.19 +
1.20 +namespace mozilla {
1.21 +namespace dom {
1.22 +
1.23 +class AudioContext;
1.24 +
1.25 +class AudioDestinationNode : public AudioNode
1.26 + , public nsIDOMEventListener
1.27 + , public nsIAudioChannelAgentCallback
1.28 + , public nsSupportsWeakReference
1.29 + , public MainThreadMediaStreamListener
1.30 +{
1.31 +public:
1.32 + // This node type knows what MediaStreamGraph to use based on
1.33 + // whether it's in offline mode.
1.34 + AudioDestinationNode(AudioContext* aContext,
1.35 + bool aIsOffline,
1.36 + AudioChannel aChannel = AudioChannel::Normal,
1.37 + uint32_t aNumberOfChannels = 0,
1.38 + uint32_t aLength = 0,
1.39 + float aSampleRate = 0.0f);
1.40 +
1.41 + virtual void DestroyMediaStream() MOZ_OVERRIDE;
1.42 +
1.43 + NS_DECL_ISUPPORTS_INHERITED
1.44 + NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(AudioDestinationNode, AudioNode)
1.45 + NS_DECL_NSIAUDIOCHANNELAGENTCALLBACK
1.46 +
1.47 + virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
1.48 +
1.49 + virtual uint16_t NumberOfOutputs() const MOZ_FINAL MOZ_OVERRIDE
1.50 + {
1.51 + return 0;
1.52 + }
1.53 +
1.54 + uint32_t MaxChannelCount() const;
1.55 + virtual void SetChannelCount(uint32_t aChannelCount,
1.56 + ErrorResult& aRv) MOZ_OVERRIDE;
1.57 +
1.58 + void Mute();
1.59 + void Unmute();
1.60 +
1.61 + void StartRendering();
1.62 +
1.63 + void OfflineShutdown();
1.64 +
1.65 + // nsIDOMEventListener
1.66 + NS_IMETHOD HandleEvent(nsIDOMEvent* aEvent);
1.67 +
1.68 + AudioChannel MozAudioChannelType() const;
1.69 + void SetMozAudioChannelType(AudioChannel aValue, ErrorResult& aRv);
1.70 +
1.71 + virtual void NotifyMainThreadStateChanged() MOZ_OVERRIDE;
1.72 + void FireOfflineCompletionEvent();
1.73 +
1.74 + // An amount that should be added to the MediaStream's current time to
1.75 + // get the AudioContext.currentTime.
1.76 + double ExtraCurrentTime();
1.77 +
1.78 + // When aIsOnlyNode is true, this is the only node for the AudioContext.
1.79 + void SetIsOnlyNodeForContext(bool aIsOnlyNode);
1.80 +
1.81 + virtual const char* NodeType() const
1.82 + {
1.83 + return "AudioDestinationNode";
1.84 + }
1.85 +
1.86 + virtual size_t SizeOfExcludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE;
1.87 + virtual size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const MOZ_OVERRIDE;
1.88 +
1.89 +private:
1.90 + bool CheckAudioChannelPermissions(AudioChannel aValue);
1.91 + void CreateAudioChannelAgent();
1.92 +
1.93 + void SetCanPlay(bool aCanPlay);
1.94 +
1.95 + void NotifyStableState();
1.96 + void ScheduleStableStateNotification();
1.97 +
1.98 + SelfReference<AudioDestinationNode> mOfflineRenderingRef;
1.99 + uint32_t mFramesToProduce;
1.100 +
1.101 + nsCOMPtr<nsIAudioChannelAgent> mAudioChannelAgent;
1.102 +
1.103 + // Audio Channel Type.
1.104 + AudioChannel mAudioChannel;
1.105 + bool mIsOffline;
1.106 + bool mHasFinished;
1.107 +
1.108 + TimeStamp mStartedBlockingDueToBeingOnlyNode;
1.109 + double mExtraCurrentTime;
1.110 + double mExtraCurrentTimeSinceLastStartedBlocking;
1.111 + bool mExtraCurrentTimeUpdatedSinceLastStableState;
1.112 +};
1.113 +
1.114 +}
1.115 +}
1.116 +
1.117 +#endif
1.118 +
