1 /* 2 * Copyright (c) 2011 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 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_UTILITY_OOURA_FFT_TABLES_NEON_SSE2_H_ 12 #define WEBRTC_MODULES_AUDIO_PROCESSING_UTILITY_OOURA_FFT_TABLES_NEON_SSE2_H_ 13 14 #include "webrtc/modules/audio_processing/utility/ooura_fft.h" 15 16 #ifdef _MSC_VER /* visual c++ */ 17 #define ALIGN16_BEG __declspec(align(16)) 18 #define ALIGN16_END 19 #else /* gcc or icc */ 20 #define ALIGN16_BEG 21 #define ALIGN16_END __attribute__((aligned(16))) 22 #endif 23 24 namespace webrtc { 25 26 // These tables used to be computed at run-time. For example, refer to: 27 // https://code.google.com/p/webrtc/source/browse/trunk/webrtc/modules/audio_processing/utility/apm_rdft.c?r=6564 28 // to see the initialization code. 29 #if defined(WEBRTC_ARCH_X86_FAMILY) || defined(WEBRTC_HAS_NEON) 30 // Constants used by SSE2 and NEON but initialized in the C path. 31 const ALIGN16_BEG float ALIGN16_END k_swap_sign[4] = {-1.f, 1.f, -1.f, 1.f}; 32 33 ALIGN16_BEG const float ALIGN16_END rdft_wk1r[32] = { 34 1.000000000f, 1.000000000f, 0.707106769f, 0.707106769f, 0.923879564f, 35 0.923879564f, 0.382683456f, 0.382683456f, 0.980785251f, 0.980785251f, 36 0.555570245f, 0.555570245f, 0.831469595f, 0.831469595f, 0.195090324f, 37 0.195090324f, 0.995184720f, 0.995184720f, 0.634393334f, 0.634393334f, 38 0.881921291f, 0.881921291f, 0.290284663f, 0.290284663f, 0.956940353f, 39 0.956940353f, 0.471396744f, 0.471396744f, 0.773010433f, 0.773010433f, 40 0.098017141f, 0.098017141f, 41 }; 42 ALIGN16_BEG const float ALIGN16_END rdft_wk2r[32] = { 43 1.000000000f, 1.000000000f, -0.000000000f, -0.000000000f, 0.707106769f, 44 0.707106769f, -0.707106769f, -0.707106769f, 0.923879564f, 0.923879564f, 45 -0.382683456f, -0.382683456f, 0.382683456f, 0.382683456f, -0.923879564f, 46 -0.923879564f, 0.980785251f, 0.980785251f, -0.195090324f, -0.195090324f, 47 0.555570245f, 0.555570245f, -0.831469595f, -0.831469595f, 0.831469595f, 48 0.831469595f, -0.555570245f, -0.555570245f, 0.195090324f, 0.195090324f, 49 -0.980785251f, -0.980785251f, 50 }; 51 ALIGN16_BEG const float ALIGN16_END rdft_wk3r[32] = { 52 1.000000000f, 1.000000000f, -0.707106769f, -0.707106769f, 0.382683456f, 53 0.382683456f, -0.923879564f, -0.923879564f, 0.831469536f, 0.831469536f, 54 -0.980785251f, -0.980785251f, -0.195090353f, -0.195090353f, -0.555570245f, 55 -0.555570245f, 0.956940353f, 0.956940353f, -0.881921172f, -0.881921172f, 56 0.098017156f, 0.098017156f, -0.773010492f, -0.773010492f, 0.634393334f, 57 0.634393334f, -0.995184720f, -0.995184720f, -0.471396863f, -0.471396863f, 58 -0.290284693f, -0.290284693f, 59 }; 60 ALIGN16_BEG const float ALIGN16_END rdft_wk1i[32] = { 61 -0.000000000f, 0.000000000f, -0.707106769f, 0.707106769f, -0.382683456f, 62 0.382683456f, -0.923879564f, 0.923879564f, -0.195090324f, 0.195090324f, 63 -0.831469595f, 0.831469595f, -0.555570245f, 0.555570245f, -0.980785251f, 64 0.980785251f, -0.098017141f, 0.098017141f, -0.773010433f, 0.773010433f, 65 -0.471396744f, 0.471396744f, -0.956940353f, 0.956940353f, -0.290284663f, 66 0.290284663f, -0.881921291f, 0.881921291f, -0.634393334f, 0.634393334f, 67 -0.995184720f, 0.995184720f, 68 }; 69 ALIGN16_BEG const float ALIGN16_END rdft_wk2i[32] = { 70 -0.000000000f, 0.000000000f, -1.000000000f, 1.000000000f, -0.707106769f, 71 0.707106769f, -0.707106769f, 0.707106769f, -0.382683456f, 0.382683456f, 72 -0.923879564f, 0.923879564f, -0.923879564f, 0.923879564f, -0.382683456f, 73 0.382683456f, -0.195090324f, 0.195090324f, -0.980785251f, 0.980785251f, 74 -0.831469595f, 0.831469595f, -0.555570245f, 0.555570245f, -0.555570245f, 75 0.555570245f, -0.831469595f, 0.831469595f, -0.980785251f, 0.980785251f, 76 -0.195090324f, 0.195090324f, 77 }; 78 ALIGN16_BEG const float ALIGN16_END rdft_wk3i[32] = { 79 -0.000000000f, 0.000000000f, -0.707106769f, 0.707106769f, -0.923879564f, 80 0.923879564f, 0.382683456f, -0.382683456f, -0.555570245f, 0.555570245f, 81 -0.195090353f, 0.195090353f, -0.980785251f, 0.980785251f, 0.831469536f, 82 -0.831469536f, -0.290284693f, 0.290284693f, -0.471396863f, 0.471396863f, 83 -0.995184720f, 0.995184720f, 0.634393334f, -0.634393334f, -0.773010492f, 84 0.773010492f, 0.098017156f, -0.098017156f, -0.881921172f, 0.881921172f, 85 0.956940353f, -0.956940353f, 86 }; 87 ALIGN16_BEG const float ALIGN16_END cftmdl_wk1r[4] = { 88 0.707106769f, 0.707106769f, 0.707106769f, -0.707106769f, 89 }; 90 #endif 91 92 } // namespace webrtc 93 94 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_UTILITY_OOURA_FFT_TABLES_NEON_SSE2_H_ 95