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/*
* Copyright (C) 2010, Google 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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 ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#if ENABLE(WEB_AUDIO)
#include "VectorMath.h"
#if OS(DARWIN)
#include <Accelerate/Accelerate.h>
#endif
namespace WebCore {
namespace VectorMath {
#if OS(DARWIN)
// On the Mac we use the highly optimized versions in Accelerate.framework
// In 32-bit mode (__ppc__ or __i386__) <Accelerate/Accelerate.h> includes <vecLib/vDSP_translate.h> which defines macros of the same name as
// our namespaced function names, so we must handle this case differently. Other architectures (64bit, ARM, etc.) do not include this header file.
void vsmul(const float* sourceP, int sourceStride, const float* scale, float* destP, int destStride, size_t framesToProcess)
{
#if defined(__ppc__) || defined(__i386__)
::vsmul(sourceP, sourceStride, scale, destP, destStride, framesToProcess);
#else
vDSP_vsmul(sourceP, sourceStride, scale, destP, destStride, framesToProcess);
#endif
}
void vadd(const float* source1P, int sourceStride1, const float* source2P, int sourceStride2, float* destP, int destStride, size_t framesToProcess)
{
#if defined(__ppc__) || defined(__i386__)
::vadd(source1P, sourceStride1, source2P, sourceStride2, destP, destStride, framesToProcess);
#else
vDSP_vadd(source1P, sourceStride1, source2P, sourceStride2, destP, destStride, framesToProcess);
#endif
}
#else
void vsmul(const float* sourceP, int sourceStride, const float* scale, float* destP, int destStride, size_t framesToProcess)
{
// FIXME: optimize for SSE
int n = framesToProcess;
float k = *scale;
while (n--) {
*destP = k * *sourceP;
sourceP += sourceStride;
destP += destStride;
}
}
void vadd(const float* source1P, int sourceStride1, const float* source2P, int sourceStride2, float* destP, int destStride, size_t framesToProcess)
{
// FIXME: optimize for SSE
int n = framesToProcess;
while (n--) {
*destP = *source1P + *source2P;
source1P += sourceStride1;
source2P += sourceStride2;
destP += destStride;
}
}
#endif // OS(DARWIN)
} // namespace VectorMath
} // namespace WebCore
#endif // ENABLE(WEB_AUDIO)
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