third_party/WebKit/Source/platform/audio/DirectConvolver.h

   1 /*
   2  * Copyright (C) 2012 Intel Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * 1.  Redistributions of source code must retain the above copyright
   9  *     notice, this list of conditions and the following disclaimer.
  10  * 2.  Redistributions in binary form must reproduce the above copyright
  11  *     notice, this list of conditions and the following disclaimer in the
  12  *     documentation and/or other materials provided with the distribution.
  13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
  14  *     its contributors may be used to endorse or promote products derived
  15  *     from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
  18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #ifndef DirectConvolver_h
  30 #define DirectConvolver_h
  31
  32 #include "platform/PlatformExport.h"
  33 #include "platform/audio/AudioArray.h"
  34
  35 #if USE(WEBAUDIO_IPP)
  36 #include <ipps.h>
  37 #endif // USE(WEBAUDIO_IPP)
  38
  39 namespace blink {
  40
  41 class PLATFORM_EXPORT DirectConvolver {
  42 public:
  43     DirectConvolver(size_t inputBlockSize);
  44
  45     void process(AudioFloatArray* convolutionKernel, const float* sourceP, float* destP, size_t framesToProcess);
  46
  47     void reset();
  48
  49 private:
  50     size_t m_inputBlockSize;
  51
  52 #if USE(WEBAUDIO_IPP)
  53     AudioFloatArray m_overlayBuffer;
  54 #endif // USE(WEBAUDIO_IPP)
  55     AudioFloatArray m_buffer;
  56 };
  57
  58 } // namespace blink
  59
  60 #endif // DirectConvolver_h