1 /* 2 * Copyright (c) 2013 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 12 #include "webrtc/common_audio/signal_processing/include/signal_processing_library.h" 13 14 static int16_t coefTable_7[] = { 15 4, 256, 8, 128, 12, 384, 16, 64, 16 20, 320, 24, 192, 28, 448, 36, 288, 17 40, 160, 44, 416, 48, 96, 52, 352, 18 56, 224, 60, 480, 68, 272, 72, 144, 19 76, 400, 84, 336, 88, 208, 92, 464, 20 100, 304, 104, 176, 108, 432, 116, 368, 21 120, 240, 124, 496, 132, 264, 140, 392, 22 148, 328, 152, 200, 156, 456, 164, 296, 23 172, 424, 180, 360, 184, 232, 188, 488, 24 196, 280, 204, 408, 212, 344, 220, 472, 25 228, 312, 236, 440, 244, 376, 252, 504, 26 268, 388, 276, 324, 284, 452, 300, 420, 27 308, 356, 316, 484, 332, 404, 348, 468, 28 364, 436, 380, 500, 412, 460, 444, 492 29 }; 30 31 static int16_t coefTable_8[] = { 32 4, 512, 8, 256, 12, 768, 16, 128, 33 20, 640, 24, 384, 28, 896, 32, 64, 34 36, 576, 40, 320, 44, 832, 48, 192, 35 52, 704, 56, 448, 60, 960, 68, 544, 36 72, 288, 76, 800, 80, 160, 84, 672, 37 88, 416, 92, 928, 100, 608, 104, 352, 38 108, 864, 112, 224, 116, 736, 120, 480, 39 124, 992, 132, 528, 136, 272, 140, 784, 40 148, 656, 152, 400, 156, 912, 164, 592, 41 168, 336, 172, 848, 176, 208, 180, 720, 42 184, 464, 188, 976, 196, 560, 200, 304, 43 204, 816, 212, 688, 216, 432, 220, 944, 44 228, 624, 232, 368, 236, 880, 244, 752, 45 248, 496, 252, 1008, 260, 520, 268, 776, 46 276, 648, 280, 392, 284, 904, 292, 584, 47 296, 328, 300, 840, 308, 712, 312, 456, 48 316, 968, 324, 552, 332, 808, 340, 680, 49 344, 424, 348, 936, 356, 616, 364, 872, 50 372, 744, 376, 488, 380, 1000, 388, 536, 51 396, 792, 404, 664, 412, 920, 420, 600, 52 428, 856, 436, 728, 440, 472, 444, 984, 53 452, 568, 460, 824, 468, 696, 476, 952, 54 484, 632, 492, 888, 500, 760, 508, 1016, 55 524, 772, 532, 644, 540, 900, 548, 580, 56 556, 836, 564, 708, 572, 964, 588, 804, 57 596, 676, 604, 932, 620, 868, 628, 740, 58 636, 996, 652, 788, 668, 916, 684, 852, 59 692, 724, 700, 980, 716, 820, 732, 948, 60 748, 884, 764, 1012, 796, 908, 812, 844, 61 828, 972, 860, 940, 892, 1004, 956, 988 62 }; 63 64 void WebRtcSpl_ComplexBitReverse(int16_t frfi[], int stages) { 65 int l; 66 int16_t tr, ti; 67 int32_t tmp1, tmp2, tmp3, tmp4; 68 int32_t* ptr_i; 69 int32_t* ptr_j; 70 71 if (stages == 8) { 72 int16_t* pcoeftable_8 = coefTable_8; 73 74 __asm __volatile ( 75 ".set push \n\t" 76 ".set noreorder \n\t" 77 "addiu %[l], $zero, 120 \n\t" 78 "1: \n\t" 79 "addiu %[l], %[l], -4 \n\t" 80 "lh %[tr], 0(%[pcoeftable_8]) \n\t" 81 "lh %[ti], 2(%[pcoeftable_8]) \n\t" 82 "lh %[tmp3], 4(%[pcoeftable_8]) \n\t" 83 "lh %[tmp4], 6(%[pcoeftable_8]) \n\t" 84 "addu %[ptr_i], %[frfi], %[tr] \n\t" 85 "addu %[ptr_j], %[frfi], %[ti] \n\t" 86 "addu %[tr], %[frfi], %[tmp3] \n\t" 87 "addu %[ti], %[frfi], %[tmp4] \n\t" 88 "ulw %[tmp1], 0(%[ptr_i]) \n\t" 89 "ulw %[tmp2], 0(%[ptr_j]) \n\t" 90 "ulw %[tmp3], 0(%[tr]) \n\t" 91 "ulw %[tmp4], 0(%[ti]) \n\t" 92 "usw %[tmp1], 0(%[ptr_j]) \n\t" 93 "usw %[tmp2], 0(%[ptr_i]) \n\t" 94 "usw %[tmp4], 0(%[tr]) \n\t" 95 "usw %[tmp3], 0(%[ti]) \n\t" 96 "lh %[tmp1], 8(%[pcoeftable_8]) \n\t" 97 "lh %[tmp2], 10(%[pcoeftable_8]) \n\t" 98 "lh %[tr], 12(%[pcoeftable_8]) \n\t" 99 "lh %[ti], 14(%[pcoeftable_8]) \n\t" 100 "addu %[ptr_i], %[frfi], %[tmp1] \n\t" 101 "addu %[ptr_j], %[frfi], %[tmp2] \n\t" 102 "addu %[tr], %[frfi], %[tr] \n\t" 103 "addu %[ti], %[frfi], %[ti] \n\t" 104 "ulw %[tmp1], 0(%[ptr_i]) \n\t" 105 "ulw %[tmp2], 0(%[ptr_j]) \n\t" 106 "ulw %[tmp3], 0(%[tr]) \n\t" 107 "ulw %[tmp4], 0(%[ti]) \n\t" 108 "usw %[tmp1], 0(%[ptr_j]) \n\t" 109 "usw %[tmp2], 0(%[ptr_i]) \n\t" 110 "usw %[tmp4], 0(%[tr]) \n\t" 111 "usw %[tmp3], 0(%[ti]) \n\t" 112 "bgtz %[l], 1b \n\t" 113 " addiu %[pcoeftable_8], %[pcoeftable_8], 16 \n\t" 114 ".set pop \n\t" 115 116 : [tmp1] "=&r" (tmp1), [tmp2] "=&r" (tmp2), [ptr_i] "=&r" (ptr_i), 117 [ptr_j] "=&r" (ptr_j), [tr] "=&r" (tr), [l] "=&r" (l), 118 [tmp3] "=&r" (tmp3), [pcoeftable_8] "+r" (pcoeftable_8), 119 [ti] "=&r" (ti), [tmp4] "=&r" (tmp4) 120 : [frfi] "r" (frfi) 121 : "memory" 122 ); 123 } else if (stages == 7) { 124 int16_t* pcoeftable_7 = coefTable_7; 125 126 __asm __volatile ( 127 ".set push \n\t" 128 ".set noreorder \n\t" 129 "addiu %[l], $zero, 56 \n\t" 130 "1: \n\t" 131 "addiu %[l], %[l], -4 \n\t" 132 "lh %[tr], 0(%[pcoeftable_7]) \n\t" 133 "lh %[ti], 2(%[pcoeftable_7]) \n\t" 134 "lh %[tmp3], 4(%[pcoeftable_7]) \n\t" 135 "lh %[tmp4], 6(%[pcoeftable_7]) \n\t" 136 "addu %[ptr_i], %[frfi], %[tr] \n\t" 137 "addu %[ptr_j], %[frfi], %[ti] \n\t" 138 "addu %[tr], %[frfi], %[tmp3] \n\t" 139 "addu %[ti], %[frfi], %[tmp4] \n\t" 140 "ulw %[tmp1], 0(%[ptr_i]) \n\t" 141 "ulw %[tmp2], 0(%[ptr_j]) \n\t" 142 "ulw %[tmp3], 0(%[tr]) \n\t" 143 "ulw %[tmp4], 0(%[ti]) \n\t" 144 "usw %[tmp1], 0(%[ptr_j]) \n\t" 145 "usw %[tmp2], 0(%[ptr_i]) \n\t" 146 "usw %[tmp4], 0(%[tr]) \n\t" 147 "usw %[tmp3], 0(%[ti]) \n\t" 148 "lh %[tmp1], 8(%[pcoeftable_7]) \n\t" 149 "lh %[tmp2], 10(%[pcoeftable_7]) \n\t" 150 "lh %[tr], 12(%[pcoeftable_7]) \n\t" 151 "lh %[ti], 14(%[pcoeftable_7]) \n\t" 152 "addu %[ptr_i], %[frfi], %[tmp1] \n\t" 153 "addu %[ptr_j], %[frfi], %[tmp2] \n\t" 154 "addu %[tr], %[frfi], %[tr] \n\t" 155 "addu %[ti], %[frfi], %[ti] \n\t" 156 "ulw %[tmp1], 0(%[ptr_i]) \n\t" 157 "ulw %[tmp2], 0(%[ptr_j]) \n\t" 158 "ulw %[tmp3], 0(%[tr]) \n\t" 159 "ulw %[tmp4], 0(%[ti]) \n\t" 160 "usw %[tmp1], 0(%[ptr_j]) \n\t" 161 "usw %[tmp2], 0(%[ptr_i]) \n\t" 162 "usw %[tmp4], 0(%[tr]) \n\t" 163 "usw %[tmp3], 0(%[ti]) \n\t" 164 "bgtz %[l], 1b \n\t" 165 " addiu %[pcoeftable_7], %[pcoeftable_7], 16 \n\t" 166 ".set pop \n\t" 167 168 : [tmp1] "=&r" (tmp1), [tmp2] "=&r" (tmp2), [ptr_i] "=&r" (ptr_i), 169 [ptr_j] "=&r" (ptr_j), [ti] "=&r" (ti), [tr] "=&r" (tr), 170 [l] "=&r" (l), [pcoeftable_7] "+r" (pcoeftable_7), 171 [tmp3] "=&r" (tmp3), [tmp4] "=&r" (tmp4) 172 : [frfi] "r" (frfi) 173 : "memory" 174 ); 175 } 176 } 177
