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FFmpeg/libavcodec/mips/aacsbr_mips.c

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  1. /*

  2.  * Copyright (c) 2012

  3.  *      MIPS Technologies, Inc., California.

  4.  *

  5.  * Redistribution and use in source and binary forms, with or without

  6.  * modification, are permitted provided that the following conditions

  7.  * are met:

  8.  * 1. Redistributions of source code must retain the above copyright

  9.  *    notice, this list of conditions and the following disclaimer.

  10.  * 2. Redistributions in binary form must reproduce the above copyright

  11.  *    notice, this list of conditions and the following disclaimer in the

  12.  *    documentation and/or other materials provided with the distribution.

  13.  * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its

  14.  *    contributors may be used to endorse or promote products derived from

  15.  *    this software without specific prior written permission.

  16.  *

  17.  * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND

  18.  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

  19.  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

  20.  * ARE DISCLAIMED.  IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE

  21.  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

  22.  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

  23.  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

  24.  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

  25.  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

  26.  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

  27.  * SUCH DAMAGE.

  28.  *

  29.  * Authors:  Djordje Pesut   (djordje@mips.com)

  30.  *           Mirjana Vulin   (mvulin@mips.com)

  31.  *

  32.  * This file is part of FFmpeg.

  33.  *

  34.  * FFmpeg is free software; you can redistribute it and/or

  35.  * modify it under the terms of the GNU Lesser General Public

  36.  * License as published by the Free Software Foundation; either

  37.  * version 2.1 of the License, or (at your option) any later version.

  38.  *

  39.  * FFmpeg is distributed in the hope that it will be useful,

  40.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  41.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  42.  * Lesser General Public License for more details.

  43.  *

  44.  * You should have received a copy of the GNU Lesser General Public

  45.  * License along with FFmpeg; if not, write to the Free Software

  46.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  47.  */

  48. 

  49. /**

  50.  * @file

  51.  * Reference: libavcodec/aacsbr.c

  52.  */

  53. 

  54. #include "libavcodec/aac.h"

  55. #include "libavcodec/aacsbr.h"

  56. 

  57. #define ENVELOPE_ADJUSTMENT_OFFSET 2

  58. 

  59. #if HAVE_INLINE_ASM

  60. static int sbr_lf_gen_mips(AACContext *ac, SpectralBandReplication *sbr,

  61.                       float X_low[32][40][2], const float W[2][32][32][2],

  62.                       int buf_idx)

  63. {

  64.     int i, k;

  65.     int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;

  66.     float *p_x_low = &X_low[0][8][0];

  67.     float *p_w = (float*)&W[buf_idx][0][0][0];

  68.     float *p_x1_low = &X_low[0][0][0];

  69.     float *p_w1 = (float*)&W[1-buf_idx][24][0][0];

  70. 

  71.     float *loop_end=p_x1_low + 2560;

  72. 

  73.     /* loop unrolled 8 times */

  74.     __asm__ volatile (

  75.     "1:                                                 \n\t"

  76.         "sw     $0,            0(%[p_x1_low])           \n\t"

  77.         "sw     $0,            4(%[p_x1_low])           \n\t"

  78.         "sw     $0,            8(%[p_x1_low])           \n\t"

  79.         "sw     $0,            12(%[p_x1_low])          \n\t"

  80.         "sw     $0,            16(%[p_x1_low])          \n\t"

  81.         "sw     $0,            20(%[p_x1_low])          \n\t"

  82.         "sw     $0,            24(%[p_x1_low])          \n\t"

  83.         "sw     $0,            28(%[p_x1_low])          \n\t"

  84.         "addiu  %[p_x1_low],   %[p_x1_low],      32     \n\t"

  85.         "bne    %[p_x1_low],   %[loop_end],      1b     \n\t"

  86.         "addiu  %[p_x1_low],   %[p_x1_low],      -10240 \n\t"

  87. 

  88.         : [p_x1_low]"+r"(p_x1_low)

  89.         : [loop_end]"r"(loop_end)

  90.         : "memory"

  91.     );

  92. 

  93.     for (k = 0; k < sbr->kx[1]; k++) {

  94.         for (i = 0; i < 32; i+=4) {

  95.             /* loop unrolled 4 times */

  96.             __asm__ volatile (

  97.                 "lw     %[temp0],   0(%[p_w])               \n\t"

  98.                 "lw     %[temp1],   4(%[p_w])               \n\t"

  99.                 "lw     %[temp2],   256(%[p_w])             \n\t"

  100.                 "lw     %[temp3],   260(%[p_w])             \n\t"

  101.                 "lw     %[temp4],   512(%[p_w])             \n\t"

  102.                 "lw     %[temp5],   516(%[p_w])             \n\t"

  103.                 "lw     %[temp6],   768(%[p_w])             \n\t"

  104.                 "lw     %[temp7],   772(%[p_w])             \n\t"

  105.                 "sw     %[temp0],   0(%[p_x_low])           \n\t"

  106.                 "sw     %[temp1],   4(%[p_x_low])           \n\t"

  107.                 "sw     %[temp2],   8(%[p_x_low])           \n\t"

  108.                 "sw     %[temp3],   12(%[p_x_low])          \n\t"

  109.                 "sw     %[temp4],   16(%[p_x_low])          \n\t"

  110.                 "sw     %[temp5],   20(%[p_x_low])          \n\t"

  111.                 "sw     %[temp6],   24(%[p_x_low])          \n\t"

  112.                 "sw     %[temp7],   28(%[p_x_low])          \n\t"

  113.                 "addiu  %[p_x_low], %[p_x_low],     32      \n\t"

  114.                 "addiu  %[p_w],     %[p_w],         1024    \n\t"

  115. 

  116.                 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),

  117.                   [temp2]"=&r"(temp2), [temp3]"=&r"(temp3),

  118.                   [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),

  119.                   [temp6]"=&r"(temp6), [temp7]"=&r"(temp7),

  120.                   [p_w]"+r"(p_w), [p_x_low]"+r"(p_x_low)

  121.                 :

  122.                 : "memory"

  123.             );

  124.         }

  125.         p_x_low += 16;

  126.         p_w -= 2046;

  127.     }

  128. 

  129.     for (k = 0; k < sbr->kx[0]; k++) {

  130.         for (i = 0; i < 2; i++) {

  131. 

  132.             /* loop unrolled 4 times */

  133.             __asm__ volatile (

  134.                 "lw     %[temp0],    0(%[p_w1])             \n\t"

  135.                 "lw     %[temp1],    4(%[p_w1])             \n\t"

  136.                 "lw     %[temp2],    256(%[p_w1])           \n\t"

  137.                 "lw     %[temp3],    260(%[p_w1])           \n\t"

  138.                 "lw     %[temp4],    512(%[p_w1])           \n\t"

  139.                 "lw     %[temp5],    516(%[p_w1])           \n\t"

  140.                 "lw     %[temp6],    768(%[p_w1])           \n\t"

  141.                 "lw     %[temp7],    772(%[p_w1])           \n\t"

  142.                 "sw     %[temp0],    0(%[p_x1_low])         \n\t"

  143.                 "sw     %[temp1],    4(%[p_x1_low])         \n\t"

  144.                 "sw     %[temp2],    8(%[p_x1_low])         \n\t"

  145.                 "sw     %[temp3],    12(%[p_x1_low])        \n\t"

  146.                 "sw     %[temp4],    16(%[p_x1_low])        \n\t"

  147.                 "sw     %[temp5],    20(%[p_x1_low])        \n\t"

  148.                 "sw     %[temp6],    24(%[p_x1_low])        \n\t"

  149.                 "sw     %[temp7],    28(%[p_x1_low])        \n\t"

  150.                 "addiu  %[p_x1_low], %[p_x1_low],   32      \n\t"

  151.                 "addiu  %[p_w1],     %[p_w1],       1024    \n\t"

  152. 

  153.                 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),

  154.                   [temp2]"=&r"(temp2), [temp3]"=&r"(temp3),

  155.                   [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),

  156.                   [temp6]"=&r"(temp6), [temp7]"=&r"(temp7),

  157.                   [p_w1]"+r"(p_w1), [p_x1_low]"+r"(p_x1_low)

  158.                 :

  159.                 : "memory"

  160.             );

  161.         }

  162.         p_x1_low += 64;

  163.         p_w1 -= 510;

  164.     }

  165.     return 0;

  166. }

  167. 

  168. static int sbr_x_gen_mips(SpectralBandReplication *sbr, float X[2][38][64],

  169.                      const float Y0[38][64][2], const float Y1[38][64][2],

  170.                      const float X_low[32][40][2], int ch)

  171. {

  172.     int k, i;

  173.     const int i_f = 32;

  174.     int temp0, temp1, temp2, temp3;

  175.     const float *X_low1, *Y01, *Y11;

  176.     float *x1=&X[0][0][0];

  177.     float *j=x1+4864;

  178.     const int i_Temp = FFMAX(2*sbr->data[ch].t_env_num_env_old - i_f, 0);

  179. 

  180.     /* loop unrolled 8 times */

  181.     __asm__ volatile (

  182.     "1:                                       \n\t"

  183.         "sw     $0,      0(%[x1])             \n\t"

  184.         "sw     $0,      4(%[x1])             \n\t"

  185.         "sw     $0,      8(%[x1])             \n\t"

  186.         "sw     $0,      12(%[x1])            \n\t"

  187.         "sw     $0,      16(%[x1])            \n\t"

  188.         "sw     $0,      20(%[x1])            \n\t"

  189.         "sw     $0,      24(%[x1])            \n\t"

  190.         "sw     $0,      28(%[x1])            \n\t"

  191.         "addiu  %[x1],   %[x1],      32       \n\t"

  192.         "bne    %[x1],   %[j],       1b       \n\t"

  193.         "addiu  %[x1],   %[x1],      -19456   \n\t"

  194. 

  195.         : [x1]"+r"(x1)

  196.         : [j]"r"(j)

  197.         : "memory"

  198.     );

  199. 

  200.     if (i_Temp != 0) {

  201. 

  202.         X_low1=&X_low[0][2][0];

  203. 

  204.         for (k = 0; k < sbr->kx[0]; k++) {

  205. 

  206.             __asm__ volatile (

  207.                 "move    %[i],        $zero                  \n\t"

  208.             "2:                                              \n\t"

  209.                 "lw      %[temp0],    0(%[X_low1])           \n\t"

  210.                 "lw      %[temp1],    4(%[X_low1])           \n\t"

  211.                 "sw      %[temp0],    0(%[x1])               \n\t"

  212.                 "sw      %[temp1],    9728(%[x1])            \n\t"

  213.                 "addiu   %[x1],       %[x1],         256     \n\t"

  214.                 "addiu   %[X_low1],   %[X_low1],     8       \n\t"

  215.                 "addiu   %[i],        %[i],          1       \n\t"

  216.                 "bne     %[i],        %[i_Temp],     2b      \n\t"

  217. 

  218.                 : [x1]"+r"(x1), [X_low1]"+r"(X_low1), [i]"=&r"(i),

  219.                   [temp0]"=&r"(temp0), [temp1]"=&r"(temp1)

  220.                 : [i_Temp]"r"(i_Temp)

  221.                 : "memory"

  222.             );

  223.             x1-=(i_Temp<<6)-1;

  224.             X_low1-=(i_Temp<<1)-80;

  225.         }

  226. 

  227.         x1=&X[0][0][k];

  228.         Y01=(float*)&Y0[32][k][0];

  229. 

  230.         for (; k < sbr->kx[0] + sbr->m[0]; k++) {

  231.             __asm__ volatile (

  232.                 "move    %[i],       $zero               \n\t"

  233.             "3:                                          \n\t"

  234.                 "lw      %[temp0],   0(%[Y01])           \n\t"

  235.                 "lw      %[temp1],   4(%[Y01])           \n\t"

  236.                 "sw      %[temp0],   0(%[x1])            \n\t"

  237.                 "sw      %[temp1],   9728(%[x1])         \n\t"

  238.                 "addiu   %[x1],      %[x1],      256     \n\t"

  239.                 "addiu   %[Y01],     %[Y01],     512     \n\t"

  240.                 "addiu   %[i],       %[i],       1       \n\t"

  241.                 "bne     %[i],       %[i_Temp],  3b      \n\t"

  242. 

  243.                 : [x1]"+r"(x1), [Y01]"+r"(Y01), [i]"=&r"(i),

  244.                   [temp0]"=&r"(temp0), [temp1]"=&r"(temp1)

  245.                 : [i_Temp]"r"(i_Temp)

  246.                 : "memory"

  247.             );

  248.             x1 -=(i_Temp<<6)-1;

  249.             Y01 -=(i_Temp<<7)-2;

  250.         }

  251.     }

  252. 

  253.     x1=&X[0][i_Temp][0];

  254.     X_low1=&X_low[0][i_Temp+2][0];

  255.     temp3=38;

  256. 

  257.     for (k = 0; k < sbr->kx[1]; k++) {

  258. 

  259.         __asm__ volatile (

  260.             "move    %[i],       %[i_Temp]              \n\t"

  261.         "4:                                             \n\t"

  262.             "lw      %[temp0],   0(%[X_low1])           \n\t"

  263.             "lw      %[temp1],   4(%[X_low1])           \n\t"

  264.             "sw      %[temp0],   0(%[x1])               \n\t"

  265.             "sw      %[temp1],   9728(%[x1])            \n\t"

  266.             "addiu   %[x1],      %[x1],         256     \n\t"

  267.             "addiu   %[X_low1],  %[X_low1],     8       \n\t"

  268.             "addiu   %[i],       %[i],          1       \n\t"

  269.             "bne     %[i],       %[temp3],      4b      \n\t"

  270. 

  271.             : [x1]"+r"(x1), [X_low1]"+r"(X_low1), [i]"=&r"(i),

  272.               [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),

  273.               [temp2]"=&r"(temp2)

  274.             : [i_Temp]"r"(i_Temp), [temp3]"r"(temp3)

  275.             : "memory"

  276.         );

  277.         x1 -= ((38-i_Temp)<<6)-1;

  278.         X_low1 -= ((38-i_Temp)<<1)- 80;

  279.     }

  280. 

  281.     x1=&X[0][i_Temp][k];

  282.     Y11=&Y1[i_Temp][k][0];

  283.     temp2=32;

  284. 

  285.     for (; k < sbr->kx[1] + sbr->m[1]; k++) {

  286. 

  287.         __asm__ volatile (

  288.            "move    %[i],       %[i_Temp]               \n\t"

  289.         "5:                                             \n\t"

  290.            "lw      %[temp0],   0(%[Y11])               \n\t"

  291.            "lw      %[temp1],   4(%[Y11])               \n\t"

  292.            "sw      %[temp0],   0(%[x1])                \n\t"

  293.            "sw      %[temp1],   9728(%[x1])             \n\t"

  294.            "addiu   %[x1],      %[x1],          256     \n\t"

  295.            "addiu   %[Y11],     %[Y11],         512     \n\t"

  296.            "addiu   %[i],       %[i],           1       \n\t"

  297.            "bne     %[i],       %[temp2],       5b      \n\t"

  298. 

  299.            : [x1]"+r"(x1), [Y11]"+r"(Y11), [i]"=&r"(i),

  300.              [temp0]"=&r"(temp0), [temp1]"=&r"(temp1)

  301.            : [i_Temp]"r"(i_Temp), [temp3]"r"(temp3),

  302.              [temp2]"r"(temp2)

  303.            : "memory"

  304.         );

  305. 

  306.         x1 -= ((32-i_Temp)<<6)-1;

  307.         Y11 -= ((32-i_Temp)<<7)-2;

  308.    }

  309.       return 0;

  310. }

  311. 

  312. #if HAVE_MIPSFPU

  313. static void sbr_hf_assemble_mips(float Y1[38][64][2],

  314.                             const float X_high[64][40][2],

  315.                             SpectralBandReplication *sbr, SBRData *ch_data,

  316.                             const int e_a[2])

  317. {

  318.     int e, i, j, m;

  319.     const int h_SL = 4 * !sbr->bs_smoothing_mode;

  320.     const int kx = sbr->kx[1];

  321.     const int m_max = sbr->m[1];

  322.     static const float h_smooth[5] = {

  323.         0.33333333333333,

  324.         0.30150283239582,

  325.         0.21816949906249,

  326.         0.11516383427084,

  327.         0.03183050093751,

  328.     };

  329. 

  330.     float (*g_temp)[48] = ch_data->g_temp, (*q_temp)[48] = ch_data->q_temp;

  331.     int indexnoise = ch_data->f_indexnoise;

  332.     int indexsine  = ch_data->f_indexsine;

  333.     float *g_temp1, *q_temp1, *pok, *pok1;

  334.     float temp1, temp2, temp3, temp4;

  335.     int size = m_max;

  336. 

  337.     if (sbr->reset) {

  338.         for (i = 0; i < h_SL; i++) {

  339.             memcpy(g_temp[i + 2*ch_data->t_env[0]], sbr->gain[0], m_max * sizeof(sbr->gain[0][0]));

  340.             memcpy(q_temp[i + 2*ch_data->t_env[0]], sbr->q_m[0],  m_max * sizeof(sbr->q_m[0][0]));

  341.         }

  342.     } else if (h_SL) {

  343.         memcpy(g_temp[2*ch_data->t_env[0]], g_temp[2*ch_data->t_env_num_env_old], 4*sizeof(g_temp[0]));

  344.         memcpy(q_temp[2*ch_data->t_env[0]], q_temp[2*ch_data->t_env_num_env_old], 4*sizeof(q_temp[0]));

  345.     }

  346. 

  347.     for (e = 0; e < ch_data->bs_num_env; e++) {

  348.         for (i = 2 * ch_data->t_env[e]; i < 2 * ch_data->t_env[e + 1]; i++) {

  349.             g_temp1 = g_temp[h_SL + i];

  350.             pok = sbr->gain[e];

  351.             q_temp1 = q_temp[h_SL + i];

  352.             pok1 = sbr->q_m[e];

  353. 

  354.             /* loop unrolled 4 times */

  355.             for (j=0; j<(size>>2); j++) {

  356.                 __asm__ volatile (

  357.                     "lw      %[temp1],   0(%[pok])               \n\t"

  358.                     "lw      %[temp2],   4(%[pok])               \n\t"

  359.                     "lw      %[temp3],   8(%[pok])               \n\t"

  360.                     "lw      %[temp4],   12(%[pok])              \n\t"

  361.                     "sw      %[temp1],   0(%[g_temp1])           \n\t"

  362.                     "sw      %[temp2],   4(%[g_temp1])           \n\t"

  363.                     "sw      %[temp3],   8(%[g_temp1])           \n\t"

  364.                     "sw      %[temp4],   12(%[g_temp1])          \n\t"

  365.                     "lw      %[temp1],   0(%[pok1])              \n\t"

  366.                     "lw      %[temp2],   4(%[pok1])              \n\t"

  367.                     "lw      %[temp3],   8(%[pok1])              \n\t"

  368.                     "lw      %[temp4],   12(%[pok1])             \n\t"

  369.                     "sw      %[temp1],   0(%[q_temp1])           \n\t"

  370.                     "sw      %[temp2],   4(%[q_temp1])           \n\t"

  371.                     "sw      %[temp3],   8(%[q_temp1])           \n\t"

  372.                     "sw      %[temp4],   12(%[q_temp1])          \n\t"

  373.                     "addiu   %[pok],     %[pok],           16    \n\t"

  374.                     "addiu   %[g_temp1], %[g_temp1],       16    \n\t"

  375.                     "addiu   %[pok1],    %[pok1],          16    \n\t"

  376.                     "addiu   %[q_temp1], %[q_temp1],       16    \n\t"

  377. 

  378.                     : [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),

  379.                       [temp3]"=&r"(temp3), [temp4]"=&r"(temp4),

  380.                       [pok]"+r"(pok), [g_temp1]"+r"(g_temp1),

  381.                       [pok1]"+r"(pok1), [q_temp1]"+r"(q_temp1)

  382.                     :

  383.                     : "memory"

  384.                 );

  385.             }

  386. 

  387.             for (j=0; j<(size&3); j++) {

  388.                 __asm__ volatile (

  389.                     "lw      %[temp1],   0(%[pok])              \n\t"

  390.                     "lw      %[temp2],   0(%[pok1])             \n\t"

  391.                     "sw      %[temp1],   0(%[g_temp1])          \n\t"

  392.                     "sw      %[temp2],   0(%[q_temp1])          \n\t"

  393.                     "addiu   %[pok],     %[pok],          4     \n\t"

  394.                     "addiu   %[g_temp1], %[g_temp1],      4     \n\t"

  395.                     "addiu   %[pok1],    %[pok1],         4     \n\t"

  396.                     "addiu   %[q_temp1], %[q_temp1],      4     \n\t"

  397. 

  398.                     : [temp1]"=&r"(temp1), [temp2]"=&r"(temp2),

  399.                       [temp3]"=&r"(temp3), [temp4]"=&r"(temp4),

  400.                       [pok]"+r"(pok), [g_temp1]"+r"(g_temp1),

  401.                       [pok1]"+r"(pok1), [q_temp1]"+r"(q_temp1)

  402.                     :

  403.                     : "memory"

  404.                 );

  405.             }

  406.         }

  407.     }

  408. 

  409.     for (e = 0; e < ch_data->bs_num_env; e++) {

  410.         for (i = 2 * ch_data->t_env[e]; i < 2 * ch_data->t_env[e + 1]; i++) {

  411.             LOCAL_ALIGNED_16(float, g_filt_tab, [48]);

  412.             LOCAL_ALIGNED_16(float, q_filt_tab, [48]);

  413.             float *g_filt, *q_filt;

  414. 

  415.             if (h_SL && e != e_a[0] && e != e_a[1]) {

  416.                 g_filt = g_filt_tab;

  417.                 q_filt = q_filt_tab;

  418. 

  419.                 for (m = 0; m < m_max; m++) {

  420.                     const int idx1 = i + h_SL;

  421.                     g_filt[m] = 0.0f;

  422.                     q_filt[m] = 0.0f;

  423. 

  424.                     for (j = 0; j <= h_SL; j++) {

  425.                         g_filt[m] += g_temp[idx1 - j][m] * h_smooth[j];

  426.                         q_filt[m] += q_temp[idx1 - j][m] * h_smooth[j];

  427.                     }

  428.                 }

  429.             } else {

  430.                 g_filt = g_temp[i + h_SL];

  431.                 q_filt = q_temp[i];

  432.             }

  433. 

  434.             sbr->dsp.hf_g_filt(Y1[i] + kx, X_high + kx, g_filt, m_max,

  435.                                i + ENVELOPE_ADJUSTMENT_OFFSET);

  436. 

  437.             if (e != e_a[0] && e != e_a[1]) {

  438.                 sbr->dsp.hf_apply_noise[indexsine](Y1[i] + kx, sbr->s_m[e],

  439.                                                    q_filt, indexnoise,

  440.                                                    kx, m_max);

  441.             } else {

  442.                 int idx = indexsine&1;

  443.                 int A = (1-((indexsine+(kx & 1))&2));

  444.                 int B = (A^(-idx)) + idx;

  445.                 float *out = &Y1[i][kx][idx];

  446.                 float *in  = sbr->s_m[e];

  447.                 float temp0, temp1, temp2, temp3, temp4, temp5;

  448.                 float A_f = (float)A;

  449.                 float B_f = (float)B;

  450. 

  451.                 for (m = 0; m+1 < m_max; m+=2) {

  452. 

  453.                     temp2 = out[0];

  454.                     temp3 = out[2];

  455. 

  456.                     __asm__ volatile(

  457.                         "lwc1    %[temp0],  0(%[in])                     \n\t"

  458.                         "lwc1    %[temp1],  4(%[in])                     \n\t"

  459.                         "madd.s  %[temp4],  %[temp2],  %[temp0], %[A_f]  \n\t"

  460.                         "madd.s  %[temp5],  %[temp3],  %[temp1], %[B_f]  \n\t"

  461.                         "swc1    %[temp4],  0(%[out])                    \n\t"

  462.                         "swc1    %[temp5],  8(%[out])                    \n\t"

  463.                         "addiu   %[in],     %[in],     8                 \n\t"

  464.                         "addiu   %[out],    %[out],    16                \n\t"

  465. 

  466.                         : [temp0]"=&f" (temp0), [temp1]"=&f"(temp1),

  467.                           [temp4]"=&f" (temp4), [temp5]"=&f"(temp5),

  468.                           [in]"+r"(in), [out]"+r"(out)

  469.                         : [A_f]"f"(A_f), [B_f]"f"(B_f), [temp2]"f"(temp2),

  470.                           [temp3]"f"(temp3)

  471.                         : "memory"

  472.                     );

  473.                 }

  474.                 if(m_max&1)

  475.                     out[2*m  ] += in[m  ] * A;

  476.             }

  477.             indexnoise = (indexnoise + m_max) & 0x1ff;

  478.             indexsine = (indexsine + 1) & 3;

  479.         }

  480.     }

  481.     ch_data->f_indexnoise = indexnoise;

  482.     ch_data->f_indexsine  = indexsine;

  483. }

  484. 

  485. static void sbr_hf_inverse_filter_mips(SBRDSPContext *dsp,

  486.                                   float (*alpha0)[2], float (*alpha1)[2],

  487.                                   const float X_low[32][40][2], int k0)

  488. {

  489.     int k;

  490.     float temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7, c;

  491.     float *phi1, *alpha_1, *alpha_0, res1, res2, temp_real, temp_im;;

  492. 

  493.     c = 1.000001f;

  494. 

  495.     for (k = 0; k < k0; k++) {

  496.         LOCAL_ALIGNED_16(float, phi, [3], [2][2]);

  497.         float dk;

  498.         phi1 = &phi[0][0][0];

  499.         alpha_1 = &alpha1[k][0];

  500.         alpha_0 = &alpha0[k][0];

  501.         dsp->autocorrelate(X_low[k], phi);

  502. 

  503.         __asm__ volatile (

  504.             "lwc1    %[temp0],  40(%[phi1])                       \n\t"

  505.             "lwc1    %[temp1],  16(%[phi1])                       \n\t"

  506.             "lwc1    %[temp2],  24(%[phi1])                       \n\t"

  507.             "lwc1    %[temp3],  28(%[phi1])                       \n\t"

  508.             "mul.s   %[dk],     %[temp0],    %[temp1]             \n\t"

  509.             "lwc1    %[temp4],  0(%[phi1])                        \n\t"

  510.             "mul.s   %[res2],   %[temp2],    %[temp2]             \n\t"

  511.             "lwc1    %[temp5],  4(%[phi1])                        \n\t"

  512.             "madd.s  %[res2],   %[res2],     %[temp3],  %[temp3]  \n\t"

  513.             "lwc1    %[temp6],  8(%[phi1])                        \n\t"

  514.             "div.s   %[res2],   %[res2],     %[c]                 \n\t"

  515.             "lwc1    %[temp0],  12(%[phi1])                       \n\t"

  516.             "sub.s   %[dk],     %[dk],       %[res2]              \n\t"

  517. 

  518.             : [temp0]"=&f"(temp0), [temp1]"=&f"(temp1), [temp2]"=&f"(temp2),

  519.               [temp3]"=&f"(temp3), [temp4]"=&f"(temp4), [temp5]"=&f"(temp5),

  520.               [temp6]"=&f"(temp6), [res2]"=&f"(res2), [dk]"=&f"(dk)

  521.             : [phi1]"r"(phi1), [c]"f"(c)

  522.             : "memory"

  523.         );

  524. 

  525.         if (!dk) {

  526.             alpha_1[0] = 0;

  527.             alpha_1[1] = 0;

  528.         } else {

  529.             __asm__ volatile (

  530.                 "mul.s   %[temp_real], %[temp4],     %[temp2]            \n\t"

  531.                 "nmsub.s %[temp_real], %[temp_real], %[temp5], %[temp3]  \n\t"

  532.                 "nmsub.s %[temp_real], %[temp_real], %[temp6], %[temp1]  \n\t"

  533.                 "mul.s   %[temp_im],   %[temp4],     %[temp3]            \n\t"

  534.                 "madd.s  %[temp_im],   %[temp_im],   %[temp5], %[temp2]  \n\t"

  535.                 "nmsub.s %[temp_im],   %[temp_im],   %[temp0], %[temp1]  \n\t"

  536.                 "div.s   %[temp_real], %[temp_real], %[dk]               \n\t"

  537.                 "div.s   %[temp_im],   %[temp_im],   %[dk]               \n\t"

  538.                 "swc1    %[temp_real], 0(%[alpha_1])                     \n\t"

  539.                 "swc1    %[temp_im],   4(%[alpha_1])                     \n\t"

  540. 

  541.                 : [temp_real]"=&f" (temp_real), [temp_im]"=&f"(temp_im)

  542.                 : [phi1]"r"(phi1), [temp0]"f"(temp0), [temp1]"f"(temp1),

  543.                   [temp2]"f"(temp2), [temp3]"f"(temp3), [temp4]"f"(temp4),

  544.                   [temp5]"f"(temp5), [temp6]"f"(temp6),

  545.                   [alpha_1]"r"(alpha_1), [dk]"f"(dk)

  546.                 : "memory"

  547.             );

  548.         }

  549. 

  550.         if (!phi1[4]) {

  551.             alpha_0[0] = 0;

  552.             alpha_0[1] = 0;

  553.         } else {

  554.             __asm__ volatile (

  555.                 "lwc1    %[temp6],     0(%[alpha_1])                     \n\t"

  556.                 "lwc1    %[temp7],     4(%[alpha_1])                     \n\t"

  557.                 "mul.s   %[temp_real], %[temp6],     %[temp2]            \n\t"

  558.                 "add.s   %[temp_real], %[temp_real], %[temp4]            \n\t"

  559.                 "madd.s  %[temp_real], %[temp_real], %[temp7], %[temp3]  \n\t"

  560.                 "mul.s   %[temp_im],   %[temp7],     %[temp2]            \n\t"

  561.                 "add.s   %[temp_im],   %[temp_im],   %[temp5]            \n\t"

  562.                 "nmsub.s %[temp_im],   %[temp_im],   %[temp6], %[temp3]  \n\t"

  563.                 "div.s   %[temp_real], %[temp_real], %[temp1]            \n\t"

  564.                 "div.s   %[temp_im],   %[temp_im],   %[temp1]            \n\t"

  565.                 "neg.s   %[temp_real], %[temp_real]                      \n\t"

  566.                 "neg.s   %[temp_im],   %[temp_im]                        \n\t"

  567.                 "swc1    %[temp_real], 0(%[alpha_0])                     \n\t"

  568.                 "swc1    %[temp_im],   4(%[alpha_0])                     \n\t"

  569. 

  570.                 : [temp_real]"=&f"(temp_real), [temp_im]"=&f"(temp_im),

  571.                   [temp6]"=&f"(temp6), [temp7]"=&f"(temp7),

  572.                   [res1]"=&f"(res1), [res2]"=&f"(res2)

  573.                 : [alpha_1]"r"(alpha_1), [alpha_0]"r"(alpha_0),

  574.                   [temp0]"f"(temp0), [temp1]"f"(temp1), [temp2]"f"(temp2),

  575.                   [temp3]"f"(temp3), [temp4]"f"(temp4), [temp5]"f"(temp5)

  576.                 : "memory"

  577.             );

  578.         }

  579. 

  580.         __asm__ volatile (

  581.             "lwc1    %[temp1],      0(%[alpha_1])                           \n\t"

  582.             "lwc1    %[temp2],      4(%[alpha_1])                           \n\t"

  583.             "lwc1    %[temp_real],  0(%[alpha_0])                           \n\t"

  584.             "lwc1    %[temp_im],    4(%[alpha_0])                           \n\t"

  585.             "mul.s   %[res1],       %[temp1],      %[temp1]                 \n\t"

  586.             "madd.s  %[res1],       %[res1],       %[temp2],    %[temp2]    \n\t"

  587.             "mul.s   %[res2],       %[temp_real],  %[temp_real]             \n\t"

  588.             "madd.s  %[res2],       %[res2],       %[temp_im],  %[temp_im]  \n\t"

  589. 

  590.             : [temp_real]"=&f"(temp_real), [temp_im]"=&f"(temp_im),

  591.               [temp1]"=&f"(temp1), [temp2]"=&f"(temp2),

  592.               [res1]"=&f"(res1), [res2]"=&f"(res2)

  593.             : [alpha_1]"r"(alpha_1), [alpha_0]"r"(alpha_0)

  594.             : "memory"

  595.         );

  596. 

  597.         if (res1 >= 16.0f || res2 >= 16.0f) {

  598.             alpha_1[0] = 0;

  599.             alpha_1[1] = 0;

  600.             alpha_0[0] = 0;

  601.             alpha_0[1] = 0;

  602.         }

  603.     }

  604. }

  605. #endif /* HAVE_MIPSFPU */

  606. #endif /* HAVE_INLINE_ASM */

  607. 

  608. void ff_aacsbr_func_ptr_init_mips(AACSBRContext *c)

  609. {

  610. #if HAVE_INLINE_ASM

  611.     c->sbr_lf_gen            = sbr_lf_gen_mips;

  612.     c->sbr_x_gen             = sbr_x_gen_mips;

  613. #if HAVE_MIPSFPU

  614.     c->sbr_hf_inverse_filter = sbr_hf_inverse_filter_mips;

  615.     c->sbr_hf_assemble       = sbr_hf_assemble_mips;

  616. #endif /* HAVE_MIPSFPU */

  617. #endif /* HAVE_INLINE_ASM */

  618. }