gecko/dom/media/webaudio/AudioBuffer.h
Boris Zbarsky 54c64f20a9 Bug 1117172 part 3. Change the wrappercached WrapObject methods to allow passing in aGivenProto. r=peterv
The only manual changes here are to BindingUtils.h, BindingUtils.cpp,
Codegen.py, Element.cpp, IDBFileRequest.cpp, IDBObjectStore.cpp,
dom/workers/Navigator.cpp, WorkerPrivate.cpp, DeviceStorageRequestChild.cpp,
Notification.cpp, nsGlobalWindow.cpp, MessagePort.cpp, nsJSEnvironment.cpp,
Sandbox.cpp, XPCConvert.cpp, ExportHelpers.cpp, and DataStoreService.cpp.  The
rest of this diff was generated by running the following commands:

  find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapObjectInternal\(JSContext *\* *(?:aCx|cx|aContext|aCtx|js))\)/\1, JS::Handle<JSObject*> aGivenProto)/g'

  find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapObjectInternal\((?:aCx|cx|aContext|aCtx|js))\)/\1, aGivenProto)/g'

  find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapNode\(JSContext *\* *(?:aCx|cx|aContext|aCtx|js))\)/\1, JS::Handle<JSObject*> aGivenProto)/g'

  find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapNode\((?:aCx|cx|aContext|aCtx|js))\)/\1, aGivenProto)/g'

  find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(WrapObject\(JSContext *\* *(?:aCx|cx|aContext|aCtx|js))\)/\1, JS::Handle<JSObject*> aGivenProto)/g'

  find . -name "*.h" -o -name "*.cpp" | xargs perl -pi -e 'BEGIN { $/ = undef } s/(Binding(?:_workers)?::Wrap\((?:aCx|cx|aContext|aCtx|js), [^,)]+)\)/\1, aGivenProto)/g'
2015-03-19 10:13:33 -04:00

124 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 AudioBuffer_h_
#define AudioBuffer_h_
#include "nsWrapperCache.h"
#include "nsCycleCollectionParticipant.h"
#include "mozilla/Attributes.h"
#include "nsAutoPtr.h"
#include "nsTArray.h"
#include "AudioContext.h"
#include "js/TypeDecls.h"
#include "mozilla/MemoryReporting.h"
namespace mozilla {
class ErrorResult;
class ThreadSharedFloatArrayBufferList;
namespace dom {
class AudioContext;
/**
* An AudioBuffer keeps its data either in the mJSChannels objects, which
* are Float32Arrays, or in mSharedChannels if the mJSChannels objects have
* been neutered.
*/
class AudioBuffer MOZ_FINAL : public nsWrapperCache
{
public:
static already_AddRefed<AudioBuffer>
Create(AudioContext* aContext, uint32_t aNumberOfChannels,
uint32_t aLength, float aSampleRate,
JSContext* aJSContext, ErrorResult& aRv);
size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(AudioBuffer)
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(AudioBuffer)
AudioContext* GetParentObject() const
{
return mContext;
}
virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) MOZ_OVERRIDE;
float SampleRate() const
{
return mSampleRate;
}
int32_t Length() const
{
return mLength;
}
double Duration() const
{
return mLength / static_cast<double> (mSampleRate);
}
uint32_t NumberOfChannels() const
{
return mJSChannels.Length();
}
/**
* If mSharedChannels is non-null, copies its contents to
* new Float32Arrays in mJSChannels. Returns a Float32Array.
*/
void GetChannelData(JSContext* aJSContext, uint32_t aChannel,
JS::MutableHandle<JSObject*> aRetval,
ErrorResult& aRv);
void CopyFromChannel(const Float32Array& aDestination, uint32_t aChannelNumber,
uint32_t aStartInChannel, ErrorResult& aRv);
void CopyToChannel(JSContext* aJSContext, const Float32Array& aSource,
uint32_t aChannelNumber, uint32_t aStartInChannel,
ErrorResult& aRv);
/**
* Returns a ThreadSharedFloatArrayBufferList containing the sample data.
* Can return null if there is no data.
*/
ThreadSharedFloatArrayBufferList* GetThreadSharedChannelsForRate(JSContext* aContext);
// This replaces the contents of the JS array for the given channel.
// This function needs to be called on an AudioBuffer which has not been
// handed off to the content yet, and right after the object has been
// initialized.
void SetRawChannelContents(uint32_t aChannel, float* aContents);
protected:
AudioBuffer(AudioContext* aContext, uint32_t aNumberOfChannels,
uint32_t aLength, float aSampleRate);
~AudioBuffer();
bool RestoreJSChannelData(JSContext* aJSContext);
void ClearJSChannels();
nsRefPtr<AudioContext> mContext;
// Float32Arrays
nsAutoTArray<JS::Heap<JSObject*>, 2> mJSChannels;
// mSharedChannels aggregates the data from mJSChannels. This is non-null
// if and only if the mJSChannels are neutered.
nsRefPtr<ThreadSharedFloatArrayBufferList> mSharedChannels;
uint32_t mLength;
float mSampleRate;
};
}
}
#endif