mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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296 lines
8.6 KiB
C++
296 lines
8.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef AudioContext_h_
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#define AudioContext_h_
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#include "mozilla/dom/AudioChannelBinding.h"
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#include "MediaBufferDecoder.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/DOMEventTargetHelper.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/dom/TypedArray.h"
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#include "nsAutoPtr.h"
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#include "nsCOMPtr.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsHashKeys.h"
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#include "nsTHashtable.h"
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#include "js/TypeDecls.h"
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#include "nsIMemoryReporter.h"
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// X11 has a #define for CurrentTime. Unbelievable :-(.
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// See dom/media/DOMMediaStream.h for more fun!
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#ifdef CurrentTime
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#undef CurrentTime
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#endif
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class nsPIDOMWindow;
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namespace mozilla {
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class DOMMediaStream;
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class ErrorResult;
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class MediaStream;
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class MediaStreamGraph;
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namespace dom {
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class AnalyserNode;
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class AudioBuffer;
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class AudioBufferSourceNode;
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class AudioDestinationNode;
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class AudioListener;
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class AudioNode;
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class BiquadFilterNode;
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class ChannelMergerNode;
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class ChannelSplitterNode;
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class ConvolverNode;
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class DelayNode;
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class DynamicsCompressorNode;
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class GainNode;
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class HTMLMediaElement;
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class MediaElementAudioSourceNode;
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class GlobalObject;
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class MediaStreamAudioDestinationNode;
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class MediaStreamAudioSourceNode;
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class OscillatorNode;
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class PannerNode;
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class ScriptProcessorNode;
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class StereoPannerNode;
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class WaveShaperNode;
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class PeriodicWave;
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class Promise;
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class AudioContext MOZ_FINAL : public DOMEventTargetHelper,
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public nsIMemoryReporter
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{
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AudioContext(nsPIDOMWindow* aParentWindow,
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bool aIsOffline,
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AudioChannel aChannel,
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uint32_t aNumberOfChannels = 0,
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uint32_t aLength = 0,
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float aSampleRate = 0.0f);
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~AudioContext();
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public:
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(AudioContext,
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DOMEventTargetHelper)
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MOZ_DEFINE_MALLOC_SIZE_OF(MallocSizeOf)
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nsPIDOMWindow* GetParentObject() const
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{
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return GetOwner();
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}
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void Shutdown(); // idempotent
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void Suspend();
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void Resume();
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virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE;
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using DOMEventTargetHelper::DispatchTrustedEvent;
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// Constructor for regular AudioContext
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static already_AddRefed<AudioContext>
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Constructor(const GlobalObject& aGlobal, ErrorResult& aRv);
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// Constructor for regular AudioContext. A default audio channel is needed.
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static already_AddRefed<AudioContext>
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Constructor(const GlobalObject& aGlobal,
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AudioChannel aChannel,
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ErrorResult& aRv);
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// Constructor for offline AudioContext
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static already_AddRefed<AudioContext>
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Constructor(const GlobalObject& aGlobal,
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uint32_t aNumberOfChannels,
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uint32_t aLength,
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float aSampleRate,
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ErrorResult& aRv);
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// AudioContext methods
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AudioDestinationNode* Destination() const
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{
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return mDestination;
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}
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float SampleRate() const
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{
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return mSampleRate;
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}
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double CurrentTime() const;
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AudioListener* Listener();
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already_AddRefed<AudioBufferSourceNode> CreateBufferSource();
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already_AddRefed<AudioBuffer>
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CreateBuffer(JSContext* aJSContext, uint32_t aNumberOfChannels,
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uint32_t aLength, float aSampleRate,
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ErrorResult& aRv);
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already_AddRefed<MediaStreamAudioDestinationNode>
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CreateMediaStreamDestination(ErrorResult& aRv);
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already_AddRefed<ScriptProcessorNode>
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CreateScriptProcessor(uint32_t aBufferSize,
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uint32_t aNumberOfInputChannels,
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uint32_t aNumberOfOutputChannels,
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ErrorResult& aRv);
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already_AddRefed<StereoPannerNode>
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CreateStereoPanner();
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already_AddRefed<AnalyserNode>
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CreateAnalyser();
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already_AddRefed<GainNode>
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CreateGain();
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already_AddRefed<WaveShaperNode>
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CreateWaveShaper();
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already_AddRefed<MediaElementAudioSourceNode>
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CreateMediaElementSource(HTMLMediaElement& aMediaElement, ErrorResult& aRv);
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already_AddRefed<MediaStreamAudioSourceNode>
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CreateMediaStreamSource(DOMMediaStream& aMediaStream, ErrorResult& aRv);
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already_AddRefed<DelayNode>
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CreateDelay(double aMaxDelayTime, ErrorResult& aRv);
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already_AddRefed<PannerNode>
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CreatePanner();
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already_AddRefed<ConvolverNode>
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CreateConvolver();
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already_AddRefed<ChannelSplitterNode>
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CreateChannelSplitter(uint32_t aNumberOfOutputs, ErrorResult& aRv);
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already_AddRefed<ChannelMergerNode>
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CreateChannelMerger(uint32_t aNumberOfInputs, ErrorResult& aRv);
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already_AddRefed<DynamicsCompressorNode>
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CreateDynamicsCompressor();
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already_AddRefed<BiquadFilterNode>
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CreateBiquadFilter();
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already_AddRefed<OscillatorNode>
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CreateOscillator();
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already_AddRefed<PeriodicWave>
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CreatePeriodicWave(const Float32Array& aRealData, const Float32Array& aImagData,
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ErrorResult& aRv);
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already_AddRefed<Promise>
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DecodeAudioData(const ArrayBuffer& aBuffer,
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const Optional<OwningNonNull<DecodeSuccessCallback> >& aSuccessCallback,
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const Optional<OwningNonNull<DecodeErrorCallback> >& aFailureCallback);
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// OfflineAudioContext methods
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already_AddRefed<Promise> StartRendering(ErrorResult& aRv);
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IMPL_EVENT_HANDLER(complete)
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bool IsOffline() const { return mIsOffline; }
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MediaStreamGraph* Graph() const;
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MediaStream* DestinationStream() const;
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// Nodes register here if they will produce sound even if they have silent
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// or no input connections. The AudioContext will keep registered nodes
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// alive until the context is collected. This takes care of "playing"
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// references and "tail-time" references.
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void RegisterActiveNode(AudioNode* aNode);
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// Nodes unregister when they have finished producing sound for the
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// foreseeable future.
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// Do NOT call UnregisterActiveNode from an AudioNode destructor.
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// If the destructor is called, then the Node has already been unregistered.
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// The destructor may be called during hashtable enumeration, during which
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// unregistering would not be safe.
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void UnregisterActiveNode(AudioNode* aNode);
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void UnregisterAudioBufferSourceNode(AudioBufferSourceNode* aNode);
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void UnregisterPannerNode(PannerNode* aNode);
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void UpdatePannerSource();
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uint32_t MaxChannelCount() const;
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void Mute() const;
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void Unmute() const;
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JSObject* GetGlobalJSObject() const;
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AudioChannel MozAudioChannelType() const;
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AudioChannel TestAudioChannelInAudioNodeStream();
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void UpdateNodeCount(int32_t aDelta);
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double DOMTimeToStreamTime(double aTime) const
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{
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return aTime - ExtraCurrentTime();
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}
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double StreamTimeToDOMTime(double aTime) const
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{
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return aTime + ExtraCurrentTime();
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}
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IMPL_EVENT_HANDLER(mozinterruptbegin)
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IMPL_EVENT_HANDLER(mozinterruptend)
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private:
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/**
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* Returns the amount of extra time added to the current time of the
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* AudioDestinationNode's MediaStream to get this AudioContext's currentTime.
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* Must be subtracted from all DOM API parameter times that are on the same
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* timeline as AudioContext's currentTime to get times we can pass to the
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* MediaStreamGraph.
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*/
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double ExtraCurrentTime() const;
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void RemoveFromDecodeQueue(WebAudioDecodeJob* aDecodeJob);
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void ShutdownDecoder();
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size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
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NS_IMETHOD CollectReports(nsIHandleReportCallback* aHandleReport,
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nsISupports* aData, bool aAnonymize);
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friend struct ::mozilla::WebAudioDecodeJob;
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private:
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// Note that it's important for mSampleRate to be initialized before
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// mDestination, as mDestination's constructor needs to access it!
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const float mSampleRate;
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nsRefPtr<AudioDestinationNode> mDestination;
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nsRefPtr<AudioListener> mListener;
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MediaBufferDecoder mDecoder;
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nsTArray<nsRefPtr<WebAudioDecodeJob> > mDecodeJobs;
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// See RegisterActiveNode. These will keep the AudioContext alive while it
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// is rendering and the window remains alive.
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nsTHashtable<nsRefPtrHashKey<AudioNode> > mActiveNodes;
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// Hashsets containing all the PannerNodes, to compute the doppler shift.
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// These are weak pointers.
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nsTHashtable<nsPtrHashKey<PannerNode> > mPannerNodes;
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// Number of channels passed in the OfflineAudioContext ctor.
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uint32_t mNumberOfChannels;
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// Number of nodes that currently exist for this AudioContext
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int32_t mNodeCount;
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bool mIsOffline;
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bool mIsStarted;
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bool mIsShutDown;
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};
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}
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}
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#endif
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