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 MODULES_AUDIO_PROCESSING_UTILITY_OOURA_FFT_TABLES_NEON_SSE2_H_ 12 #define MODULES_AUDIO_PROCESSING_UTILITY_OOURA_FFT_TABLES_NEON_SSE2_H_ 13 14 #include "common_audio/third_party/ooura/fft_size_128/ooura_fft.h" 15 #include "rtc_base/system/arch.h" 16 17 #ifdef _MSC_VER /* visual c++ */ 18 #define ALIGN16_BEG __declspec(align(16)) 19 #define ALIGN16_END 20 #else /* gcc or icc */ 21 #define ALIGN16_BEG 22 #define ALIGN16_END __attribute__((aligned(16))) 23 #endif 24 25 namespace webrtc { 26 27 // These tables used to be computed at run-time. For example, refer to: 28 // https://code.google.com/p/webrtc/source/browse/trunk/webrtc/modules/audio_processing/utility/apm_rdft.c?r=6564 29 // to see the initialization code. 30 #if defined(WEBRTC_ARCH_X86_FAMILY) || defined(WEBRTC_HAS_NEON) 31 // Constants used by SSE2 and NEON but initialized in the C path. 32 const ALIGN16_BEG float ALIGN16_END k_swap_sign[4] = {-1.f, 1.f, -1.f, 1.f}; 33 34 ALIGN16_BEG const float ALIGN16_END rdft_wk1r[32] = { 35 1.000000000f, 1.000000000f, 0.707106769f, 0.707106769f, 0.923879564f, 36 0.923879564f, 0.382683456f, 0.382683456f, 0.980785251f, 0.980785251f, 37 0.555570245f, 0.555570245f, 0.831469595f, 0.831469595f, 0.195090324f, 38 0.195090324f, 0.995184720f, 0.995184720f, 0.634393334f, 0.634393334f, 39 0.881921291f, 0.881921291f, 0.290284663f, 0.290284663f, 0.956940353f, 40 0.956940353f, 0.471396744f, 0.471396744f, 0.773010433f, 0.773010433f, 41 0.098017141f, 0.098017141f, 42 }; 43 ALIGN16_BEG const float ALIGN16_END rdft_wk2r[32] = { 44 1.000000000f, 1.000000000f, -0.000000000f, -0.000000000f, 0.707106769f, 45 0.707106769f, -0.707106769f, -0.707106769f, 0.923879564f, 0.923879564f, 46 -0.382683456f, -0.382683456f, 0.382683456f, 0.382683456f, -0.923879564f, 47 -0.923879564f, 0.980785251f, 0.980785251f, -0.195090324f, -0.195090324f, 48 0.555570245f, 0.555570245f, -0.831469595f, -0.831469595f, 0.831469595f, 49 0.831469595f, -0.555570245f, -0.555570245f, 0.195090324f, 0.195090324f, 50 -0.980785251f, -0.980785251f, 51 }; 52 ALIGN16_BEG const float ALIGN16_END rdft_wk3r[32] = { 53 1.000000000f, 1.000000000f, -0.707106769f, -0.707106769f, 0.382683456f, 54 0.382683456f, -0.923879564f, -0.923879564f, 0.831469536f, 0.831469536f, 55 -0.980785251f, -0.980785251f, -0.195090353f, -0.195090353f, -0.555570245f, 56 -0.555570245f, 0.956940353f, 0.956940353f, -0.881921172f, -0.881921172f, 57 0.098017156f, 0.098017156f, -0.773010492f, -0.773010492f, 0.634393334f, 58 0.634393334f, -0.995184720f, -0.995184720f, -0.471396863f, -0.471396863f, 59 -0.290284693f, -0.290284693f, 60 }; 61 ALIGN16_BEG const float ALIGN16_END rdft_wk1i[32] = { 62 -0.000000000f, 0.000000000f, -0.707106769f, 0.707106769f, -0.382683456f, 63 0.382683456f, -0.923879564f, 0.923879564f, -0.195090324f, 0.195090324f, 64 -0.831469595f, 0.831469595f, -0.555570245f, 0.555570245f, -0.980785251f, 65 0.980785251f, -0.098017141f, 0.098017141f, -0.773010433f, 0.773010433f, 66 -0.471396744f, 0.471396744f, -0.956940353f, 0.956940353f, -0.290284663f, 67 0.290284663f, -0.881921291f, 0.881921291f, -0.634393334f, 0.634393334f, 68 -0.995184720f, 0.995184720f, 69 }; 70 ALIGN16_BEG const float ALIGN16_END rdft_wk2i[32] = { 71 -0.000000000f, 0.000000000f, -1.000000000f, 1.000000000f, -0.707106769f, 72 0.707106769f, -0.707106769f, 0.707106769f, -0.382683456f, 0.382683456f, 73 -0.923879564f, 0.923879564f, -0.923879564f, 0.923879564f, -0.382683456f, 74 0.382683456f, -0.195090324f, 0.195090324f, -0.980785251f, 0.980785251f, 75 -0.831469595f, 0.831469595f, -0.555570245f, 0.555570245f, -0.555570245f, 76 0.555570245f, -0.831469595f, 0.831469595f, -0.980785251f, 0.980785251f, 77 -0.195090324f, 0.195090324f, 78 }; 79 ALIGN16_BEG const float ALIGN16_END rdft_wk3i[32] = { 80 -0.000000000f, 0.000000000f, -0.707106769f, 0.707106769f, -0.923879564f, 81 0.923879564f, 0.382683456f, -0.382683456f, -0.555570245f, 0.555570245f, 82 -0.195090353f, 0.195090353f, -0.980785251f, 0.980785251f, 0.831469536f, 83 -0.831469536f, -0.290284693f, 0.290284693f, -0.471396863f, 0.471396863f, 84 -0.995184720f, 0.995184720f, 0.634393334f, -0.634393334f, -0.773010492f, 85 0.773010492f, 0.098017156f, -0.098017156f, -0.881921172f, 0.881921172f, 86 0.956940353f, -0.956940353f, 87 }; 88 ALIGN16_BEG const float ALIGN16_END cftmdl_wk1r[4] = { 89 0.707106769f, 90 0.707106769f, 91 0.707106769f, 92 -0.707106769f, 93 }; 94 #endif 95 96 } // namespace webrtc 97 98 #endif // MODULES_AUDIO_PROCESSING_UTILITY_OOURA_FFT_TABLES_NEON_SSE2_H_ 99