mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
78 lines
1.9 KiB
C++
78 lines
1.9 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 AnalyserNode_h_
|
|
#define AnalyserNode_h_
|
|
|
|
#include "AudioNode.h"
|
|
#include "FFTBlock.h"
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
|
|
class AudioContext;
|
|
|
|
class AnalyserNode : public AudioNode
|
|
{
|
|
public:
|
|
explicit AnalyserNode(AudioContext* aContext);
|
|
|
|
NS_DECL_ISUPPORTS_INHERITED
|
|
|
|
virtual JSObject* WrapObject(JSContext* aCx,
|
|
JS::Handle<JSObject*> aScope) MOZ_OVERRIDE;
|
|
|
|
void GetFloatFrequencyData(const Float32Array& aArray);
|
|
void GetByteFrequencyData(const Uint8Array& aArray);
|
|
void GetByteTimeDomainData(const Uint8Array& aArray);
|
|
uint32_t FftSize() const
|
|
{
|
|
return mAnalysisBlock.FFTSize();
|
|
}
|
|
void SetFftSize(uint32_t aValue, ErrorResult& aRv);
|
|
uint32_t FrequencyBinCount() const
|
|
{
|
|
return FftSize() / 2;
|
|
}
|
|
double MinDecibels() const
|
|
{
|
|
return mMinDecibels;
|
|
}
|
|
void SetMinDecibels(double aValue, ErrorResult& aRv);
|
|
double MaxDecibels() const
|
|
{
|
|
return mMaxDecibels;
|
|
}
|
|
void SetMaxDecibels(double aValue, ErrorResult& aRv);
|
|
double SmoothingTimeConstant() const
|
|
{
|
|
return mSmoothingTimeConstant;
|
|
}
|
|
void SetSmoothingTimeConstant(double aValue, ErrorResult& aRv);
|
|
|
|
private:
|
|
friend class AnalyserNodeEngine;
|
|
void AppendChunk(const AudioChunk& aChunk);
|
|
bool AllocateBuffer();
|
|
bool FFTAnalysis();
|
|
void ApplyBlackmanWindow(float* aBuffer, uint32_t aSize);
|
|
|
|
private:
|
|
FFTBlock mAnalysisBlock;
|
|
double mMinDecibels;
|
|
double mMaxDecibels;
|
|
double mSmoothingTimeConstant;
|
|
uint32_t mWriteIndex;
|
|
FallibleTArray<float> mBuffer;
|
|
FallibleTArray<float> mOutputBuffer;
|
|
};
|
|
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|