1 /* 2 * Copyright (C) 2010, Google 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 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 */ 24 25 #include "config.h" 26 27 #if ENABLE(WEB_AUDIO) 28 29 #include "VectorMath.h" 30 31 #if OS(DARWIN) 32 #include <Accelerate/Accelerate.h> 33 #endif 34 35 namespace WebCore { 36 37 namespace VectorMath { 38 39 #if OS(DARWIN) 40 // On the Mac we use the highly optimized versions in Accelerate.framework 41 // In 32-bit mode (__ppc__ or __i386__) <Accelerate/Accelerate.h> includes <vecLib/vDSP_translate.h> which defines macros of the same name as 42 // our namespaced function names, so we must handle this case differently. Other architectures (64bit, ARM, etc.) do not include this header file. 43 44 void vsmul(const float* sourceP, int sourceStride, const float* scale, float* destP, int destStride, size_t framesToProcess) 45 { 46 #if defined(__ppc__) || defined(__i386__) 47 ::vsmul(sourceP, sourceStride, scale, destP, destStride, framesToProcess); 48 #else 49 vDSP_vsmul(sourceP, sourceStride, scale, destP, destStride, framesToProcess); 50 #endif 51 } 52 53 void vadd(const float* source1P, int sourceStride1, const float* source2P, int sourceStride2, float* destP, int destStride, size_t framesToProcess) 54 { 55 #if defined(__ppc__) || defined(__i386__) 56 ::vadd(source1P, sourceStride1, source2P, sourceStride2, destP, destStride, framesToProcess); 57 #else 58 vDSP_vadd(source1P, sourceStride1, source2P, sourceStride2, destP, destStride, framesToProcess); 59 #endif 60 } 61 62 #else 63 64 void vsmul(const float* sourceP, int sourceStride, const float* scale, float* destP, int destStride, size_t framesToProcess) 65 { 66 // FIXME: optimize for SSE 67 int n = framesToProcess; 68 float k = *scale; 69 while (n--) { 70 *destP = k * *sourceP; 71 sourceP += sourceStride; 72 destP += destStride; 73 } 74 } 75 76 void vadd(const float* source1P, int sourceStride1, const float* source2P, int sourceStride2, float* destP, int destStride, size_t framesToProcess) 77 { 78 // FIXME: optimize for SSE 79 int n = framesToProcess; 80 while (n--) { 81 *destP = *source1P + *source2P; 82 source1P += sourceStride1; 83 source2P += sourceStride2; 84 destP += destStride; 85 } 86 } 87 88 #endif // OS(DARWIN) 89 90 } // namespace VectorMath 91 92 } // namespace WebCore 93 94 #endif // ENABLE(WEB_AUDIO) 95
