| /* |
| * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| |
| #include "webrtc/common_audio/signal_processing/include/signal_processing_library.h" |
| |
| static int16_t coefTable_7[] = { |
| 4, 256, 8, 128, 12, 384, 16, 64, |
| 20, 320, 24, 192, 28, 448, 36, 288, |
| 40, 160, 44, 416, 48, 96, 52, 352, |
| 56, 224, 60, 480, 68, 272, 72, 144, |
| 76, 400, 84, 336, 88, 208, 92, 464, |
| 100, 304, 104, 176, 108, 432, 116, 368, |
| 120, 240, 124, 496, 132, 264, 140, 392, |
| 148, 328, 152, 200, 156, 456, 164, 296, |
| 172, 424, 180, 360, 184, 232, 188, 488, |
| 196, 280, 204, 408, 212, 344, 220, 472, |
| 228, 312, 236, 440, 244, 376, 252, 504, |
| 268, 388, 276, 324, 284, 452, 300, 420, |
| 308, 356, 316, 484, 332, 404, 348, 468, |
| 364, 436, 380, 500, 412, 460, 444, 492 |
| }; |
| |
| static int16_t coefTable_8[] = { |
| 4, 512, 8, 256, 12, 768, 16, 128, |
| 20, 640, 24, 384, 28, 896, 32, 64, |
| 36, 576, 40, 320, 44, 832, 48, 192, |
| 52, 704, 56, 448, 60, 960, 68, 544, |
| 72, 288, 76, 800, 80, 160, 84, 672, |
| 88, 416, 92, 928, 100, 608, 104, 352, |
| 108, 864, 112, 224, 116, 736, 120, 480, |
| 124, 992, 132, 528, 136, 272, 140, 784, |
| 148, 656, 152, 400, 156, 912, 164, 592, |
| 168, 336, 172, 848, 176, 208, 180, 720, |
| 184, 464, 188, 976, 196, 560, 200, 304, |
| 204, 816, 212, 688, 216, 432, 220, 944, |
| 228, 624, 232, 368, 236, 880, 244, 752, |
| 248, 496, 252, 1008, 260, 520, 268, 776, |
| 276, 648, 280, 392, 284, 904, 292, 584, |
| 296, 328, 300, 840, 308, 712, 312, 456, |
| 316, 968, 324, 552, 332, 808, 340, 680, |
| 344, 424, 348, 936, 356, 616, 364, 872, |
| 372, 744, 376, 488, 380, 1000, 388, 536, |
| 396, 792, 404, 664, 412, 920, 420, 600, |
| 428, 856, 436, 728, 440, 472, 444, 984, |
| 452, 568, 460, 824, 468, 696, 476, 952, |
| 484, 632, 492, 888, 500, 760, 508, 1016, |
| 524, 772, 532, 644, 540, 900, 548, 580, |
| 556, 836, 564, 708, 572, 964, 588, 804, |
| 596, 676, 604, 932, 620, 868, 628, 740, |
| 636, 996, 652, 788, 668, 916, 684, 852, |
| 692, 724, 700, 980, 716, 820, 732, 948, |
| 748, 884, 764, 1012, 796, 908, 812, 844, |
| 828, 972, 860, 940, 892, 1004, 956, 988 |
| }; |
| |
| void WebRtcSpl_ComplexBitReverse(int16_t frfi[], int stages) { |
| int l; |
| int16_t tr, ti; |
| int32_t tmp1, tmp2, tmp3, tmp4; |
| int32_t* ptr_i; |
| int32_t* ptr_j; |
| |
| if (stages == 8) { |
| int16_t* pcoeftable_8 = coefTable_8; |
| |
| __asm __volatile ( |
| ".set push \n\t" |
| ".set noreorder \n\t" |
| "addiu %[l], $zero, 120 \n\t" |
| "1: \n\t" |
| "addiu %[l], %[l], -4 \n\t" |
| "lh %[tr], 0(%[pcoeftable_8]) \n\t" |
| "lh %[ti], 2(%[pcoeftable_8]) \n\t" |
| "lh %[tmp3], 4(%[pcoeftable_8]) \n\t" |
| "lh %[tmp4], 6(%[pcoeftable_8]) \n\t" |
| "addu %[ptr_i], %[frfi], %[tr] \n\t" |
| "addu %[ptr_j], %[frfi], %[ti] \n\t" |
| "addu %[tr], %[frfi], %[tmp3] \n\t" |
| "addu %[ti], %[frfi], %[tmp4] \n\t" |
| "ulw %[tmp1], 0(%[ptr_i]) \n\t" |
| "ulw %[tmp2], 0(%[ptr_j]) \n\t" |
| "ulw %[tmp3], 0(%[tr]) \n\t" |
| "ulw %[tmp4], 0(%[ti]) \n\t" |
| "usw %[tmp1], 0(%[ptr_j]) \n\t" |
| "usw %[tmp2], 0(%[ptr_i]) \n\t" |
| "usw %[tmp4], 0(%[tr]) \n\t" |
| "usw %[tmp3], 0(%[ti]) \n\t" |
| "lh %[tmp1], 8(%[pcoeftable_8]) \n\t" |
| "lh %[tmp2], 10(%[pcoeftable_8]) \n\t" |
| "lh %[tr], 12(%[pcoeftable_8]) \n\t" |
| "lh %[ti], 14(%[pcoeftable_8]) \n\t" |
| "addu %[ptr_i], %[frfi], %[tmp1] \n\t" |
| "addu %[ptr_j], %[frfi], %[tmp2] \n\t" |
| "addu %[tr], %[frfi], %[tr] \n\t" |
| "addu %[ti], %[frfi], %[ti] \n\t" |
| "ulw %[tmp1], 0(%[ptr_i]) \n\t" |
| "ulw %[tmp2], 0(%[ptr_j]) \n\t" |
| "ulw %[tmp3], 0(%[tr]) \n\t" |
| "ulw %[tmp4], 0(%[ti]) \n\t" |
| "usw %[tmp1], 0(%[ptr_j]) \n\t" |
| "usw %[tmp2], 0(%[ptr_i]) \n\t" |
| "usw %[tmp4], 0(%[tr]) \n\t" |
| "usw %[tmp3], 0(%[ti]) \n\t" |
| "bgtz %[l], 1b \n\t" |
| " addiu %[pcoeftable_8], %[pcoeftable_8], 16 \n\t" |
| ".set pop \n\t" |
| |
| : [tmp1] "=&r" (tmp1), [tmp2] "=&r" (tmp2), [ptr_i] "=&r" (ptr_i), |
| [ptr_j] "=&r" (ptr_j), [tr] "=&r" (tr), [l] "=&r" (l), |
| [tmp3] "=&r" (tmp3), [pcoeftable_8] "+r" (pcoeftable_8), |
| [ti] "=&r" (ti), [tmp4] "=&r" (tmp4) |
| : [frfi] "r" (frfi) |
| : "memory" |
| ); |
| } else if (stages == 7) { |
| int16_t* pcoeftable_7 = coefTable_7; |
| |
| __asm __volatile ( |
| ".set push \n\t" |
| ".set noreorder \n\t" |
| "addiu %[l], $zero, 56 \n\t" |
| "1: \n\t" |
| "addiu %[l], %[l], -4 \n\t" |
| "lh %[tr], 0(%[pcoeftable_7]) \n\t" |
| "lh %[ti], 2(%[pcoeftable_7]) \n\t" |
| "lh %[tmp3], 4(%[pcoeftable_7]) \n\t" |
| "lh %[tmp4], 6(%[pcoeftable_7]) \n\t" |
| "addu %[ptr_i], %[frfi], %[tr] \n\t" |
| "addu %[ptr_j], %[frfi], %[ti] \n\t" |
| "addu %[tr], %[frfi], %[tmp3] \n\t" |
| "addu %[ti], %[frfi], %[tmp4] \n\t" |
| "ulw %[tmp1], 0(%[ptr_i]) \n\t" |
| "ulw %[tmp2], 0(%[ptr_j]) \n\t" |
| "ulw %[tmp3], 0(%[tr]) \n\t" |
| "ulw %[tmp4], 0(%[ti]) \n\t" |
| "usw %[tmp1], 0(%[ptr_j]) \n\t" |
| "usw %[tmp2], 0(%[ptr_i]) \n\t" |
| "usw %[tmp4], 0(%[tr]) \n\t" |
| "usw %[tmp3], 0(%[ti]) \n\t" |
| "lh %[tmp1], 8(%[pcoeftable_7]) \n\t" |
| "lh %[tmp2], 10(%[pcoeftable_7]) \n\t" |
| "lh %[tr], 12(%[pcoeftable_7]) \n\t" |
| "lh %[ti], 14(%[pcoeftable_7]) \n\t" |
| "addu %[ptr_i], %[frfi], %[tmp1] \n\t" |
| "addu %[ptr_j], %[frfi], %[tmp2] \n\t" |
| "addu %[tr], %[frfi], %[tr] \n\t" |
| "addu %[ti], %[frfi], %[ti] \n\t" |
| "ulw %[tmp1], 0(%[ptr_i]) \n\t" |
| "ulw %[tmp2], 0(%[ptr_j]) \n\t" |
| "ulw %[tmp3], 0(%[tr]) \n\t" |
| "ulw %[tmp4], 0(%[ti]) \n\t" |
| "usw %[tmp1], 0(%[ptr_j]) \n\t" |
| "usw %[tmp2], 0(%[ptr_i]) \n\t" |
| "usw %[tmp4], 0(%[tr]) \n\t" |
| "usw %[tmp3], 0(%[ti]) \n\t" |
| "bgtz %[l], 1b \n\t" |
| " addiu %[pcoeftable_7], %[pcoeftable_7], 16 \n\t" |
| ".set pop \n\t" |
| |
| : [tmp1] "=&r" (tmp1), [tmp2] "=&r" (tmp2), [ptr_i] "=&r" (ptr_i), |
| [ptr_j] "=&r" (ptr_j), [ti] "=&r" (ti), [tr] "=&r" (tr), |
| [l] "=&r" (l), [pcoeftable_7] "+r" (pcoeftable_7), |
| [tmp3] "=&r" (tmp3), [tmp4] "=&r" (tmp4) |
| : [frfi] "r" (frfi) |
| : "memory" |
| ); |
| } |
| } |
