andrew@webrtc.org | a7b57da | 2012-10-22 18:19:23 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
| 11 | /* The global function contained in this file initializes SPL function |
| 12 | * pointers, currently only for ARM platforms. |
| 13 | * |
| 14 | * Some code came from common/rtcd.c in the WebM project. |
| 15 | */ |
| 16 | |
pbos@webrtc.org | abf0cd8 | 2013-05-27 09:49:58 +0000 | [diff] [blame] | 17 | #include "webrtc/common_audio/signal_processing/include/real_fft.h" |
| 18 | #include "webrtc/common_audio/signal_processing/include/signal_processing_library.h" |
| 19 | #include "webrtc/system_wrappers/interface/cpu_features_wrapper.h" |
andrew@webrtc.org | a7b57da | 2012-10-22 18:19:23 +0000 | [diff] [blame] | 20 | |
| 21 | /* Declare function pointers. */ |
| 22 | MaxAbsValueW16 WebRtcSpl_MaxAbsValueW16; |
| 23 | MaxAbsValueW32 WebRtcSpl_MaxAbsValueW32; |
| 24 | MaxValueW16 WebRtcSpl_MaxValueW16; |
| 25 | MaxValueW32 WebRtcSpl_MaxValueW32; |
| 26 | MinValueW16 WebRtcSpl_MinValueW16; |
| 27 | MinValueW32 WebRtcSpl_MinValueW32; |
| 28 | CrossCorrelation WebRtcSpl_CrossCorrelation; |
| 29 | DownsampleFast WebRtcSpl_DownsampleFast; |
| 30 | ScaleAndAddVectorsWithRound WebRtcSpl_ScaleAndAddVectorsWithRound; |
kma@webrtc.org | a3c7fa2 | 2013-07-24 17:38:23 +0000 | [diff] [blame] | 31 | CreateRealFFT WebRtcSpl_CreateRealFFT; |
| 32 | FreeRealFFT WebRtcSpl_FreeRealFFT; |
andrew@webrtc.org | a7b57da | 2012-10-22 18:19:23 +0000 | [diff] [blame] | 33 | RealForwardFFT WebRtcSpl_RealForwardFFT; |
| 34 | RealInverseFFT WebRtcSpl_RealInverseFFT; |
| 35 | |
andrew@webrtc.org | 85e32df | 2013-02-21 20:12:21 +0000 | [diff] [blame] | 36 | #if (defined(WEBRTC_DETECT_ARM_NEON) || !defined(WEBRTC_ARCH_ARM_NEON)) && \ |
| 37 | !defined(MIPS32_LE) |
andrew@webrtc.org | a7b57da | 2012-10-22 18:19:23 +0000 | [diff] [blame] | 38 | /* Initialize function pointers to the generic C version. */ |
| 39 | static void InitPointersToC() { |
| 40 | WebRtcSpl_MaxAbsValueW16 = WebRtcSpl_MaxAbsValueW16C; |
| 41 | WebRtcSpl_MaxAbsValueW32 = WebRtcSpl_MaxAbsValueW32C; |
| 42 | WebRtcSpl_MaxValueW16 = WebRtcSpl_MaxValueW16C; |
| 43 | WebRtcSpl_MaxValueW32 = WebRtcSpl_MaxValueW32C; |
| 44 | WebRtcSpl_MinValueW16 = WebRtcSpl_MinValueW16C; |
| 45 | WebRtcSpl_MinValueW32 = WebRtcSpl_MinValueW32C; |
| 46 | WebRtcSpl_CrossCorrelation = WebRtcSpl_CrossCorrelationC; |
| 47 | WebRtcSpl_DownsampleFast = WebRtcSpl_DownsampleFastC; |
| 48 | WebRtcSpl_ScaleAndAddVectorsWithRound = |
| 49 | WebRtcSpl_ScaleAndAddVectorsWithRoundC; |
kma@webrtc.org | a3c7fa2 | 2013-07-24 17:38:23 +0000 | [diff] [blame] | 50 | WebRtcSpl_CreateRealFFT = WebRtcSpl_CreateRealFFTC; |
| 51 | WebRtcSpl_FreeRealFFT = WebRtcSpl_FreeRealFFTC; |
andrew@webrtc.org | a7b57da | 2012-10-22 18:19:23 +0000 | [diff] [blame] | 52 | WebRtcSpl_RealForwardFFT = WebRtcSpl_RealForwardFFTC; |
| 53 | WebRtcSpl_RealInverseFFT = WebRtcSpl_RealInverseFFTC; |
| 54 | } |
| 55 | #endif |
| 56 | |
| 57 | #if defined(WEBRTC_DETECT_ARM_NEON) || defined(WEBRTC_ARCH_ARM_NEON) |
| 58 | /* Initialize function pointers to the Neon version. */ |
| 59 | static void InitPointersToNeon() { |
| 60 | WebRtcSpl_MaxAbsValueW16 = WebRtcSpl_MaxAbsValueW16Neon; |
| 61 | WebRtcSpl_MaxAbsValueW32 = WebRtcSpl_MaxAbsValueW32Neon; |
| 62 | WebRtcSpl_MaxValueW16 = WebRtcSpl_MaxValueW16Neon; |
| 63 | WebRtcSpl_MaxValueW32 = WebRtcSpl_MaxValueW32Neon; |
| 64 | WebRtcSpl_MinValueW16 = WebRtcSpl_MinValueW16Neon; |
| 65 | WebRtcSpl_MinValueW32 = WebRtcSpl_MinValueW32Neon; |
| 66 | WebRtcSpl_CrossCorrelation = WebRtcSpl_CrossCorrelationNeon; |
| 67 | WebRtcSpl_DownsampleFast = WebRtcSpl_DownsampleFastNeon; |
fischman@webrtc.org | be039c2 | 2014-04-28 20:09:09 +0000 | [diff] [blame^] | 68 | /* TODO(henrik.lundin): re-enable NEON when the crash from bug 3243 is |
| 69 | understood. */ |
andrew@webrtc.org | a7b57da | 2012-10-22 18:19:23 +0000 | [diff] [blame] | 70 | WebRtcSpl_ScaleAndAddVectorsWithRound = |
fischman@webrtc.org | be039c2 | 2014-04-28 20:09:09 +0000 | [diff] [blame^] | 71 | WebRtcSpl_ScaleAndAddVectorsWithRoundC; |
kma@webrtc.org | a3c7fa2 | 2013-07-24 17:38:23 +0000 | [diff] [blame] | 72 | WebRtcSpl_CreateRealFFT = WebRtcSpl_CreateRealFFTNeon; |
| 73 | WebRtcSpl_FreeRealFFT = WebRtcSpl_FreeRealFFTNeon; |
andrew@webrtc.org | a7b57da | 2012-10-22 18:19:23 +0000 | [diff] [blame] | 74 | WebRtcSpl_RealForwardFFT = WebRtcSpl_RealForwardFFTNeon; |
| 75 | WebRtcSpl_RealInverseFFT = WebRtcSpl_RealInverseFFTNeon; |
| 76 | } |
| 77 | #endif |
| 78 | |
andrew@webrtc.org | 85e32df | 2013-02-21 20:12:21 +0000 | [diff] [blame] | 79 | #if defined(MIPS32_LE) |
| 80 | /* Initialize function pointers to the MIPS version. */ |
| 81 | static void InitPointersToMIPS() { |
| 82 | WebRtcSpl_MaxAbsValueW16 = WebRtcSpl_MaxAbsValueW16_mips; |
| 83 | WebRtcSpl_MaxValueW16 = WebRtcSpl_MaxValueW16_mips; |
| 84 | WebRtcSpl_MaxValueW32 = WebRtcSpl_MaxValueW32_mips; |
| 85 | WebRtcSpl_MinValueW16 = WebRtcSpl_MinValueW16_mips; |
| 86 | WebRtcSpl_MinValueW32 = WebRtcSpl_MinValueW32_mips; |
andrew@webrtc.org | fccf64c | 2013-09-18 17:40:46 +0000 | [diff] [blame] | 87 | WebRtcSpl_CrossCorrelation = WebRtcSpl_CrossCorrelation_mips; |
andrew@webrtc.org | e113280 | 2013-05-30 16:38:36 +0000 | [diff] [blame] | 88 | WebRtcSpl_DownsampleFast = WebRtcSpl_DownsampleFast_mips; |
kma@webrtc.org | a3c7fa2 | 2013-07-24 17:38:23 +0000 | [diff] [blame] | 89 | WebRtcSpl_CreateRealFFT = WebRtcSpl_CreateRealFFTC; |
| 90 | WebRtcSpl_FreeRealFFT = WebRtcSpl_FreeRealFFTC; |
andrew@webrtc.org | 85e32df | 2013-02-21 20:12:21 +0000 | [diff] [blame] | 91 | WebRtcSpl_RealForwardFFT = WebRtcSpl_RealForwardFFTC; |
| 92 | WebRtcSpl_RealInverseFFT = WebRtcSpl_RealInverseFFTC; |
| 93 | #if defined(MIPS_DSP_R1_LE) |
| 94 | WebRtcSpl_MaxAbsValueW32 = WebRtcSpl_MaxAbsValueW32_mips; |
andrew@webrtc.org | fccf64c | 2013-09-18 17:40:46 +0000 | [diff] [blame] | 95 | WebRtcSpl_ScaleAndAddVectorsWithRound = |
| 96 | WebRtcSpl_ScaleAndAddVectorsWithRound_mips; |
andrew@webrtc.org | 85e32df | 2013-02-21 20:12:21 +0000 | [diff] [blame] | 97 | #else |
| 98 | WebRtcSpl_MaxAbsValueW32 = WebRtcSpl_MaxAbsValueW32C; |
andrew@webrtc.org | fccf64c | 2013-09-18 17:40:46 +0000 | [diff] [blame] | 99 | WebRtcSpl_ScaleAndAddVectorsWithRound = |
| 100 | WebRtcSpl_ScaleAndAddVectorsWithRoundC; |
andrew@webrtc.org | 85e32df | 2013-02-21 20:12:21 +0000 | [diff] [blame] | 101 | #endif |
| 102 | } |
| 103 | #endif |
| 104 | |
andrew@webrtc.org | a7b57da | 2012-10-22 18:19:23 +0000 | [diff] [blame] | 105 | static void InitFunctionPointers(void) { |
| 106 | #if defined(WEBRTC_DETECT_ARM_NEON) |
| 107 | if ((WebRtc_GetCPUFeaturesARM() & kCPUFeatureNEON) != 0) { |
| 108 | InitPointersToNeon(); |
| 109 | } else { |
| 110 | InitPointersToC(); |
| 111 | } |
| 112 | #elif defined(WEBRTC_ARCH_ARM_NEON) |
| 113 | InitPointersToNeon(); |
andrew@webrtc.org | 85e32df | 2013-02-21 20:12:21 +0000 | [diff] [blame] | 114 | #elif defined(MIPS32_LE) |
| 115 | InitPointersToMIPS(); |
andrew@webrtc.org | a7b57da | 2012-10-22 18:19:23 +0000 | [diff] [blame] | 116 | #else |
| 117 | InitPointersToC(); |
| 118 | #endif /* WEBRTC_DETECT_ARM_NEON */ |
| 119 | } |
| 120 | |
| 121 | #if defined(WEBRTC_POSIX) |
| 122 | #include <pthread.h> |
| 123 | |
| 124 | static void once(void (*func)(void)) { |
| 125 | static pthread_once_t lock = PTHREAD_ONCE_INIT; |
| 126 | pthread_once(&lock, func); |
| 127 | } |
| 128 | |
| 129 | #elif defined(_WIN32) |
| 130 | #include <windows.h> |
| 131 | |
| 132 | static void once(void (*func)(void)) { |
| 133 | /* Didn't use InitializeCriticalSection() since there's no race-free context |
| 134 | * in which to execute it. |
| 135 | * |
| 136 | * TODO(kma): Change to different implementation (e.g. |
| 137 | * InterlockedCompareExchangePointer) to avoid issues similar to |
| 138 | * http://code.google.com/p/webm/issues/detail?id=467. |
| 139 | */ |
andrew@webrtc.org | b4575c1 | 2013-01-29 06:45:22 +0000 | [diff] [blame] | 140 | static CRITICAL_SECTION lock = {(void *)((size_t)-1), -1, 0, 0, 0, 0}; |
andrew@webrtc.org | a7b57da | 2012-10-22 18:19:23 +0000 | [diff] [blame] | 141 | static int done = 0; |
| 142 | |
| 143 | EnterCriticalSection(&lock); |
| 144 | if (!done) { |
| 145 | func(); |
| 146 | done = 1; |
| 147 | } |
| 148 | LeaveCriticalSection(&lock); |
| 149 | } |
| 150 | |
| 151 | /* There's no fallback version as an #else block here to ensure thread safety. |
| 152 | * In case of neither pthread for WEBRTC_POSIX nor _WIN32 is present, build |
| 153 | * system should pick it up. |
| 154 | */ |
| 155 | #endif /* WEBRTC_POSIX */ |
| 156 | |
| 157 | void WebRtcSpl_Init() { |
| 158 | once(InitFunctionPointers); |
| 159 | } |