gecko-dev/content/media/webaudio/AudioContext.h

148 lines
3.5 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef AudioContext_h_
#define AudioContext_h_
#include "nsWrapperCache.h"
#include "nsCycleCollectionParticipant.h"
#include "mozilla/Attributes.h"
#include "nsCOMPtr.h"
#include "EnableWebAudioCheck.h"
#include "nsAutoPtr.h"
#include "mozilla/dom/TypedArray.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/AudioContextBinding.h"
#include "MediaBufferDecoder.h"
#include "StreamBuffer.h"
#include "MediaStreamGraph.h"
#include "nsIDOMWindow.h"
// X11 has a #define for CurrentTime. Unbelievable :-(.
// See content/media/DOMMediaStream.h for more fun!
#ifdef CurrentTime
#undef CurrentTime
#endif
struct JSContext;
class JSObject;
class nsIDOMWindow;
namespace mozilla {
class ErrorResult;
struct WebAudioDecodeJob;
namespace dom {
class AnalyserNode;
class AudioBuffer;
class AudioBufferSourceNode;
class AudioDestinationNode;
class AudioListener;
class BiquadFilterNode;
class DelayNode;
class DynamicsCompressorNode;
class GainNode;
class GlobalObject;
class PannerNode;
class AudioContext MOZ_FINAL : public nsWrapperCache,
public EnableWebAudioCheck
{
explicit AudioContext(nsIDOMWindow* aParentWindow);
~AudioContext();
public:
NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(AudioContext)
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(AudioContext)
nsIDOMWindow* GetParentObject() const
{
return mWindow;
}
void Shutdown()
{
Suspend();
mDecoder.Shutdown();
}
void Suspend();
void Resume();
virtual JSObject* WrapObject(JSContext* aCx, JSObject* aScope) MOZ_OVERRIDE;
static already_AddRefed<AudioContext>
Constructor(const GlobalObject& aGlobal, ErrorResult& aRv);
AudioDestinationNode* Destination() const
{
return mDestination;
}
float SampleRate() const
{
return float(IdealAudioRate());
}
double CurrentTime() const;
AudioListener* Listener();
already_AddRefed<AudioBufferSourceNode> CreateBufferSource();
already_AddRefed<AudioBuffer>
CreateBuffer(JSContext* aJSContext, uint32_t aNumberOfChannels,
uint32_t aLength, float aSampleRate,
ErrorResult& aRv);
already_AddRefed<AnalyserNode>
CreateAnalyser();
already_AddRefed<GainNode>
CreateGain();
already_AddRefed<DelayNode>
CreateDelay(double aMaxDelayTime, ErrorResult& aRv);
already_AddRefed<PannerNode>
CreatePanner();
already_AddRefed<DynamicsCompressorNode>
CreateDynamicsCompressor();
already_AddRefed<BiquadFilterNode>
CreateBiquadFilter();
void DecodeAudioData(const ArrayBuffer& aBuffer,
DecodeSuccessCallback& aSuccessCallback,
const Optional<OwningNonNull<DecodeErrorCallback> >& aFailureCallback);
uint32_t GetRate() const { return IdealAudioRate(); }
MediaStreamGraph* Graph() const;
MediaStream* DestinationStream() const;
private:
void RemoveFromDecodeQueue(WebAudioDecodeJob* aDecodeJob);
friend struct ::mozilla::WebAudioDecodeJob;
private:
nsCOMPtr<nsIDOMWindow> mWindow;
nsRefPtr<AudioDestinationNode> mDestination;
nsRefPtr<AudioListener> mListener;
MediaBufferDecoder mDecoder;
nsTArray<nsAutoPtr<WebAudioDecodeJob> > mDecodeJobs;
};
}
}
#endif