| /* |
| * Copyright (c) 2014 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/modules/audio_processing/aec/aec_rdft.h" |
| #include "webrtc/typedefs.h" |
| |
| static void bitrv2_128_mips(float *a) { |
| // n is 128 |
| float xr, xi, yr, yi; |
| |
| xr = a[8]; |
| xi = a[9]; |
| yr = a[16]; |
| yi = a[17]; |
| a[8] = yr; |
| a[9] = yi; |
| a[16] = xr; |
| a[17] = xi; |
| |
| xr = a[64]; |
| xi = a[65]; |
| yr = a[2]; |
| yi = a[3]; |
| a[64] = yr; |
| a[65] = yi; |
| a[2] = xr; |
| a[3] = xi; |
| |
| xr = a[72]; |
| xi = a[73]; |
| yr = a[18]; |
| yi = a[19]; |
| a[72] = yr; |
| a[73] = yi; |
| a[18] = xr; |
| a[19] = xi; |
| |
| xr = a[80]; |
| xi = a[81]; |
| yr = a[10]; |
| yi = a[11]; |
| a[80] = yr; |
| a[81] = yi; |
| a[10] = xr; |
| a[11] = xi; |
| |
| xr = a[88]; |
| xi = a[89]; |
| yr = a[26]; |
| yi = a[27]; |
| a[88] = yr; |
| a[89] = yi; |
| a[26] = xr; |
| a[27] = xi; |
| |
| xr = a[74]; |
| xi = a[75]; |
| yr = a[82]; |
| yi = a[83]; |
| a[74] = yr; |
| a[75] = yi; |
| a[82] = xr; |
| a[83] = xi; |
| |
| xr = a[32]; |
| xi = a[33]; |
| yr = a[4]; |
| yi = a[5]; |
| a[32] = yr; |
| a[33] = yi; |
| a[4] = xr; |
| a[5] = xi; |
| |
| xr = a[40]; |
| xi = a[41]; |
| yr = a[20]; |
| yi = a[21]; |
| a[40] = yr; |
| a[41] = yi; |
| a[20] = xr; |
| a[21] = xi; |
| |
| xr = a[48]; |
| xi = a[49]; |
| yr = a[12]; |
| yi = a[13]; |
| a[48] = yr; |
| a[49] = yi; |
| a[12] = xr; |
| a[13] = xi; |
| |
| xr = a[56]; |
| xi = a[57]; |
| yr = a[28]; |
| yi = a[29]; |
| a[56] = yr; |
| a[57] = yi; |
| a[28] = xr; |
| a[29] = xi; |
| |
| xr = a[34]; |
| xi = a[35]; |
| yr = a[68]; |
| yi = a[69]; |
| a[34] = yr; |
| a[35] = yi; |
| a[68] = xr; |
| a[69] = xi; |
| |
| xr = a[42]; |
| xi = a[43]; |
| yr = a[84]; |
| yi = a[85]; |
| a[42] = yr; |
| a[43] = yi; |
| a[84] = xr; |
| a[85] = xi; |
| |
| xr = a[50]; |
| xi = a[51]; |
| yr = a[76]; |
| yi = a[77]; |
| a[50] = yr; |
| a[51] = yi; |
| a[76] = xr; |
| a[77] = xi; |
| |
| xr = a[58]; |
| xi = a[59]; |
| yr = a[92]; |
| yi = a[93]; |
| a[58] = yr; |
| a[59] = yi; |
| a[92] = xr; |
| a[93] = xi; |
| |
| xr = a[44]; |
| xi = a[45]; |
| yr = a[52]; |
| yi = a[53]; |
| a[44] = yr; |
| a[45] = yi; |
| a[52] = xr; |
| a[53] = xi; |
| |
| xr = a[96]; |
| xi = a[97]; |
| yr = a[6]; |
| yi = a[7]; |
| a[96] = yr; |
| a[97] = yi; |
| a[6] = xr; |
| a[7] = xi; |
| |
| xr = a[104]; |
| xi = a[105]; |
| yr = a[22]; |
| yi = a[23]; |
| a[104] = yr; |
| a[105] = yi; |
| a[22] = xr; |
| a[23] = xi; |
| |
| xr = a[112]; |
| xi = a[113]; |
| yr = a[14]; |
| yi = a[15]; |
| a[112] = yr; |
| a[113] = yi; |
| a[14] = xr; |
| a[15] = xi; |
| |
| xr = a[120]; |
| xi = a[121]; |
| yr = a[30]; |
| yi = a[31]; |
| a[120] = yr; |
| a[121] = yi; |
| a[30] = xr; |
| a[31] = xi; |
| |
| xr = a[98]; |
| xi = a[99]; |
| yr = a[70]; |
| yi = a[71]; |
| a[98] = yr; |
| a[99] = yi; |
| a[70] = xr; |
| a[71] = xi; |
| |
| xr = a[106]; |
| xi = a[107]; |
| yr = a[86]; |
| yi = a[87]; |
| a[106] = yr; |
| a[107] = yi; |
| a[86] = xr; |
| a[87] = xi; |
| |
| xr = a[114]; |
| xi = a[115]; |
| yr = a[78]; |
| yi = a[79]; |
| a[114] = yr; |
| a[115] = yi; |
| a[78] = xr; |
| a[79] = xi; |
| |
| xr = a[122]; |
| xi = a[123]; |
| yr = a[94]; |
| yi = a[95]; |
| a[122] = yr; |
| a[123] = yi; |
| a[94] = xr; |
| a[95] = xi; |
| |
| xr = a[100]; |
| xi = a[101]; |
| yr = a[38]; |
| yi = a[39]; |
| a[100] = yr; |
| a[101] = yi; |
| a[38] = xr; |
| a[39] = xi; |
| |
| xr = a[108]; |
| xi = a[109]; |
| yr = a[54]; |
| yi = a[55]; |
| a[108] = yr; |
| a[109] = yi; |
| a[54] = xr; |
| a[55] = xi; |
| |
| xr = a[116]; |
| xi = a[117]; |
| yr = a[46]; |
| yi = a[47]; |
| a[116] = yr; |
| a[117] = yi; |
| a[46] = xr; |
| a[47] = xi; |
| |
| xr = a[124]; |
| xi = a[125]; |
| yr = a[62]; |
| yi = a[63]; |
| a[124] = yr; |
| a[125] = yi; |
| a[62] = xr; |
| a[63] = xi; |
| |
| xr = a[110]; |
| xi = a[111]; |
| yr = a[118]; |
| yi = a[119]; |
| a[110] = yr; |
| a[111] = yi; |
| a[118] = xr; |
| a[119] = xi; |
| } |
| |
| static void cftfsub_128_mips(float *a) { |
| float x0r, x0i, x1r, x1i, x2r, x2i, x3r, x3i; |
| float f0, f1, f2, f3, f4, f5, f6, f7; |
| int tmp_a, count; |
| |
| cft1st_128(a); |
| cftmdl_128(a); |
| |
| __asm __volatile ( |
| ".set push \n\t" |
| ".set noreorder \n\t" |
| "addiu %[tmp_a], %[a], 0 \n\t" |
| "addiu %[count], $zero, 16 \n\t" |
| "1: \n\t" |
| "addiu %[count], %[count], -1 \n\t" |
| "lwc1 %[f0], 0(%[tmp_a]) \n\t" |
| "lwc1 %[f1], 4(%[tmp_a]) \n\t" |
| "lwc1 %[f2], 128(%[tmp_a]) \n\t" |
| "lwc1 %[f3], 132(%[tmp_a]) \n\t" |
| "lwc1 %[f4], 256(%[tmp_a]) \n\t" |
| "lwc1 %[f5], 260(%[tmp_a]) \n\t" |
| "lwc1 %[f6], 384(%[tmp_a]) \n\t" |
| "lwc1 %[f7], 388(%[tmp_a]) \n\t" |
| "add.s %[x0r], %[f0], %[f2] \n\t" |
| "add.s %[x0i], %[f1], %[f3] \n\t" |
| "add.s %[x2r], %[f4], %[f6] \n\t" |
| "add.s %[x2i], %[f5], %[f7] \n\t" |
| "sub.s %[x1r], %[f0], %[f2] \n\t" |
| "sub.s %[x1i], %[f1], %[f3] \n\t" |
| "sub.s %[x3r], %[f4], %[f6] \n\t" |
| "sub.s %[x3i], %[f5], %[f7] \n\t" |
| "add.s %[f0], %[x0r], %[x2r] \n\t" |
| "add.s %[f1], %[x0i], %[x2i] \n\t" |
| "sub.s %[f4], %[x0r], %[x2r] \n\t" |
| "sub.s %[f5], %[x0i], %[x2i] \n\t" |
| "sub.s %[f2], %[x1r], %[x3i] \n\t" |
| "add.s %[f3], %[x1i], %[x3r] \n\t" |
| "add.s %[f6], %[x1r], %[x3i] \n\t" |
| "sub.s %[f7], %[x1i], %[x3r] \n\t" |
| "swc1 %[f0], 0(%[tmp_a]) \n\t" |
| "swc1 %[f1], 4(%[tmp_a]) \n\t" |
| "swc1 %[f2], 128(%[tmp_a]) \n\t" |
| "swc1 %[f3], 132(%[tmp_a]) \n\t" |
| "swc1 %[f4], 256(%[tmp_a]) \n\t" |
| "swc1 %[f5], 260(%[tmp_a]) \n\t" |
| "swc1 %[f6], 384(%[tmp_a]) \n\t" |
| "swc1 %[f7], 388(%[tmp_a]) \n\t" |
| "bgtz %[count], 1b \n\t" |
| " addiu %[tmp_a], %[tmp_a], 8 \n\t" |
| ".set pop \n\t" |
| : [f0] "=&f" (f0), [f1] "=&f" (f1), [f2] "=&f" (f2), [f3] "=&f" (f3), |
| [f4] "=&f" (f4), [f5] "=&f" (f5), [f6] "=&f" (f6), [f7] "=&f" (f7), |
| [x0r] "=&f" (x0r), [x0i] "=&f" (x0i), [x1r] "=&f" (x1r), |
| [x1i] "=&f" (x1i), [x2r] "=&f" (x2r), [x2i] "=&f" (x2i), |
| [x3r] "=&f" (x3r), [x3i] "=&f" (x3i), [tmp_a] "=&r" (tmp_a), |
| [count] "=&r" (count) |
| : [a] "r" (a) |
| : "memory" |
| ); |
| } |
| |
| void aec_rdft_init_mips(void) { |
| cftfsub_128 = cftfsub_128_mips; |
| bitrv2_128 = bitrv2_128_mips; |
| } |