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2010-10-27 Chris Rogers <crogers@google.com>
        Reviewed by Kenneth Russell.

        Add VectorMath files
        https://bugs.webkit.org/show_bug.cgi?id=48467

        No new tests since audio API is not yet implemented.

        * platform/audio/VectorMath.cpp: Added.
        (WebCore::VectorMath::vsmul):
        (WebCore::VectorMath::vadd):
        * platform/audio/VectorMath.h: Added.

Canonical link: https://commits.webkit.org/61259@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@70743 268f45cc-cd09-0410-ab3c-d52691b4dbfc
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Chris Rogers committed Oct 28, 2010
1 parent 002cb2b commit 67805189e036fc419665e3f109e3db53db8bf816
Showing 3 changed files with 139 additions and 0 deletions.
@@ -1,3 +1,17 @@
2010-10-27 Chris Rogers <crogers@google.com>

Reviewed by Kenneth Russell.

Add VectorMath files
https://bugs.webkit.org/show_bug.cgi?id=48467

No new tests since audio API is not yet implemented.

* platform/audio/VectorMath.cpp: Added.
(WebCore::VectorMath::vsmul):
(WebCore::VectorMath::vadd):
* platform/audio/VectorMath.h: Added.

2010-10-27 Chris Rogers <crogers@google.com>

Reviewed by Kenneth Russell.
@@ -0,0 +1,84 @@
/*
* 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

void vsmul(const float* sourceP, int sourceStride, const float* scale, float* destP, int destStride, size_t framesToProcess)
{
vDSP_vsmul(sourceP, sourceStride, scale, destP, destStride, framesToProcess);
}

void vadd(const float* source1P, int sourceStride1, const float* source2P, int sourceStride2, float* destP, int destStride, size_t framesToProcess)
{
vDSP_vadd(source1P, sourceStride1, source2P, sourceStride2, destP, destStride, framesToProcess);
}

#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)
@@ -0,0 +1,41 @@
/*
* 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.
*/

#ifndef VectorMath_h
#define VectorMath_h

// Defines the interface for several vector math functions whose implementation will ideally be optimized.

namespace WebCore {

namespace VectorMath {

void vsmul(const float* sourceP, int sourceStride, const float* scale, float* destP, int destStride, size_t framesToProcess);
void vadd(const float* source1P, int sourceStride1, const float* source2P, int sourceStride2, float* destP, int destStride, size_t framesToProcess);

} // namespace VectorMath

} // namespace WebCore

#endif // VectorMath_h

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