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32 #include "platform/audio/ReverbConvolver.h"
33 #include "wtf/Noncopyable.h"
34 #include "wtf/Vector.h"
40 // Multi-channel convolution reverb with channel matrixing - one or more ReverbConvolver objects are used internally.
42 class PLATFORM_EXPORT Reverb {
43 WTF_MAKE_NONCOPYABLE(Reverb);
45 enum { MaxFrameSize = 256 };
47 // renderSliceSize is a rendering hint, so the FFTs can be optimized to not all occur at the same time (very bad when rendering on a real-time thread).
48 Reverb(AudioBus* impulseResponseBuffer, size_t renderSliceSize, size_t maxFFTSize, size_t numberOfChannels, bool useBackgroundThreads, bool normalize);
50 void process(const AudioBus* sourceBus, AudioBus* destinationBus, size_t framesToProcess);
53 size_t impulseResponseLength() const { return m_impulseResponseLength; }
54 size_t latencyFrames() const;
57 void initialize(AudioBus* impulseResponseBuffer, size_t renderSliceSize, size_t maxFFTSize, size_t numberOfChannels, bool useBackgroundThreads);
59 size_t m_impulseResponseLength;
61 Vector<OwnPtr<ReverbConvolver> > m_convolvers;
63 // For "True" stereo processing
64 RefPtr<AudioBus> m_tempBuffer;