FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
aacsbr_mips.c
Go to the documentation of this file.
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 }
Generated on Sun Jul 20 2014 23:05:50 for FFmpeg by   doxygen 1.8.2