content/media/webaudio/blink/DirectConvolver.h
author Ehsan Akhgari <ehsan@mozilla.com>
Mon, 10 Jun 2013 16:08:38 -0400
changeset 134587 6bed30223d8f63012b88f9ae9faaf44dd88d0911
child 134588 b7efc129d2b1a487e5aa79eede28cc9c4dfb92a9
permissions -rw-r--r--
Bug 815643 - Part 3: Import the Convolution processing implementation from Blink; r=roc The original code was copied from Blink SVN revision 150518.

/*
 * Copyright (C) 2012 Intel Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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 */

#ifndef DirectConvolver_h
#define DirectConvolver_h

#include "core/platform/audio/AudioArray.h"

#if USE(WEBAUDIO_IPP)
#include <ipps.h>
#endif // USE(WEBAUDIO_IPP)

namespace WebCore {

class DirectConvolver {
public:
    DirectConvolver(size_t inputBlockSize);

    void process(AudioFloatArray* convolutionKernel, const float* sourceP, float* destP, size_t framesToProcess);

    void reset();

private:
    size_t m_inputBlockSize;

#if USE(WEBAUDIO_IPP)
    AudioFloatArray m_overlayBuffer;
#endif // USE(WEBAUDIO_IPP)
    AudioFloatArray m_buffer;
};

} // namespace WebCore

#endif // DirectConvolver_h