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aacdec_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: Darko Laus (darko@mips.com)
30  * Djordje Pesut (djordje@mips.com)
31  * Mirjana Vulin (mvulin@mips.com)
32  *
33  * This file is part of FFmpeg.
34  *
35  * FFmpeg is free software; you can redistribute it and/or
36  * modify it under the terms of the GNU Lesser General Public
37  * License as published by the Free Software Foundation; either
38  * version 2.1 of the License, or (at your option) any later version.
39  *
40  * FFmpeg is distributed in the hope that it will be useful,
41  * but WITHOUT ANY WARRANTY; without even the implied warranty of
42  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
43  * Lesser General Public License for more details.
44  *
45  * You should have received a copy of the GNU Lesser General Public
46  * License along with FFmpeg; if not, write to the Free Software
47  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
48  */
49 
50 /**
51  * @file
52  * Reference: libavcodec/aacdec.c
53  */
54 
55 #include "libavcodec/aac.h"
56 #include "aacdec_mips.h"
57 #include "libavcodec/aactab.h"
58 #include "libavcodec/sinewin.h"
59 
60 #if HAVE_INLINE_ASM
61 static av_always_inline int lcg_random(unsigned previous_val)
62 {
63  union { unsigned u; int s; } v = { previous_val * 1664525u + 1013904223 };
64  return v.s;
65 }
66 
67 static void imdct_and_windowing_mips(AACContext *ac, SingleChannelElement *sce)
68 {
69  IndividualChannelStream *ics = &sce->ics;
70  float *in = sce->coeffs;
71  float *out = sce->ret;
72  float *saved = sce->saved;
73  const float *swindow = ics->use_kb_window[0] ? ff_aac_kbd_short_128 : ff_sine_128;
74  const float *lwindow_prev = ics->use_kb_window[1] ? ff_aac_kbd_long_1024 : ff_sine_1024;
75  const float *swindow_prev = ics->use_kb_window[1] ? ff_aac_kbd_short_128 : ff_sine_128;
76  float *buf = ac->buf_mdct;
77  int i;
78 
79  if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) {
80  for (i = 0; i < 1024; i += 128)
81  ac->mdct_small.imdct_half(&ac->mdct_small, buf + i, in + i);
82  } else
83  ac->mdct.imdct_half(&ac->mdct, buf, in);
84 
85  /* window overlapping
86  * NOTE: To simplify the overlapping code, all 'meaningless' short to long
87  * and long to short transitions are considered to be short to short
88  * transitions. This leaves just two cases (long to long and short to short)
89  * with a little special sauce for EIGHT_SHORT_SEQUENCE.
90  */
91  if ((ics->window_sequence[1] == ONLY_LONG_SEQUENCE || ics->window_sequence[1] == LONG_STOP_SEQUENCE) &&
92  (ics->window_sequence[0] == ONLY_LONG_SEQUENCE || ics->window_sequence[0] == LONG_START_SEQUENCE)) {
93  ac->fdsp.vector_fmul_window( out, saved, buf, lwindow_prev, 512);
94  } else {
95  {
96  float *buf1 = saved;
97  float *buf2 = out;
98  int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;
99  int loop_end;
100 
101  /* loop unrolled 8 times */
102  __asm__ volatile (
103  ".set push \n\t"
104  ".set noreorder \n\t"
105  "addiu %[loop_end], %[src], 1792 \n\t"
106  "1: \n\t"
107  "lw %[temp0], 0(%[src]) \n\t"
108  "lw %[temp1], 4(%[src]) \n\t"
109  "lw %[temp2], 8(%[src]) \n\t"
110  "lw %[temp3], 12(%[src]) \n\t"
111  "lw %[temp4], 16(%[src]) \n\t"
112  "lw %[temp5], 20(%[src]) \n\t"
113  "lw %[temp6], 24(%[src]) \n\t"
114  "lw %[temp7], 28(%[src]) \n\t"
115  "addiu %[src], %[src], 32 \n\t"
116  "sw %[temp0], 0(%[dst]) \n\t"
117  "sw %[temp1], 4(%[dst]) \n\t"
118  "sw %[temp2], 8(%[dst]) \n\t"
119  "sw %[temp3], 12(%[dst]) \n\t"
120  "sw %[temp4], 16(%[dst]) \n\t"
121  "sw %[temp5], 20(%[dst]) \n\t"
122  "sw %[temp6], 24(%[dst]) \n\t"
123  "sw %[temp7], 28(%[dst]) \n\t"
124  "bne %[src], %[loop_end], 1b \n\t"
125  " addiu %[dst], %[dst], 32 \n\t"
126  ".set pop \n\t"
127 
128  : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),
129  [temp2]"=&r"(temp2), [temp3]"=&r"(temp3),
130  [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
131  [temp6]"=&r"(temp6), [temp7]"=&r"(temp7),
132  [loop_end]"=&r"(loop_end), [src]"+r"(buf1),
133  [dst]"+r"(buf2)
134  :
135  : "memory"
136  );
137  }
138 
139  if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) {
140  {
141  float wi;
142  float wj;
143  int i;
144  float temp0, temp1, temp2, temp3;
145  float *dst0 = out + 448 + 0*128;
146  float *dst1 = dst0 + 64 + 63;
147  float *dst2 = saved + 63;
148  float *win0 = (float*)swindow;
149  float *win1 = win0 + 64 + 63;
150  float *win0_prev = (float*)swindow_prev;
151  float *win1_prev = win0_prev + 64 + 63;
152  float *src0_prev = saved + 448;
153  float *src1_prev = buf + 0*128 + 63;
154  float *src0 = buf + 0*128 + 64;
155  float *src1 = buf + 1*128 + 63;
156 
157  for(i = 0; i < 64; i++)
158  {
159  temp0 = src0_prev[0];
160  temp1 = src1_prev[0];
161  wi = *win0_prev;
162  wj = *win1_prev;
163  temp2 = src0[0];
164  temp3 = src1[0];
165  dst0[0] = temp0 * wj - temp1 * wi;
166  dst1[0] = temp0 * wi + temp1 * wj;
167 
168  wi = *win0;
169  wj = *win1;
170 
171  temp0 = src0[128];
172  temp1 = src1[128];
173  dst0[128] = temp2 * wj - temp3 * wi;
174  dst1[128] = temp2 * wi + temp3 * wj;
175 
176  temp2 = src0[256];
177  temp3 = src1[256];
178  dst0[256] = temp0 * wj - temp1 * wi;
179  dst1[256] = temp0 * wi + temp1 * wj;
180  dst0[384] = temp2 * wj - temp3 * wi;
181  dst1[384] = temp2 * wi + temp3 * wj;
182 
183  temp0 = src0[384];
184  temp1 = src1[384];
185  dst0[512] = temp0 * wj - temp1 * wi;
186  dst2[0] = temp0 * wi + temp1 * wj;
187 
188  src0++;
189  src1--;
190  src0_prev++;
191  src1_prev--;
192  win0++;
193  win1--;
194  win0_prev++;
195  win1_prev--;
196  dst0++;
197  dst1--;
198  dst2--;
199  }
200  }
201  } else {
202  ac->fdsp.vector_fmul_window(out + 448, saved + 448, buf, swindow_prev, 64);
203  {
204  float *buf1 = buf + 64;
205  float *buf2 = out + 576;
206  int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;
207  int loop_end;
208 
209  /* loop unrolled 8 times */
210  __asm__ volatile (
211  ".set push \n\t"
212  ".set noreorder \n\t"
213  "addiu %[loop_end], %[src], 1792 \n\t"
214  "1: \n\t"
215  "lw %[temp0], 0(%[src]) \n\t"
216  "lw %[temp1], 4(%[src]) \n\t"
217  "lw %[temp2], 8(%[src]) \n\t"
218  "lw %[temp3], 12(%[src]) \n\t"
219  "lw %[temp4], 16(%[src]) \n\t"
220  "lw %[temp5], 20(%[src]) \n\t"
221  "lw %[temp6], 24(%[src]) \n\t"
222  "lw %[temp7], 28(%[src]) \n\t"
223  "addiu %[src], %[src], 32 \n\t"
224  "sw %[temp0], 0(%[dst]) \n\t"
225  "sw %[temp1], 4(%[dst]) \n\t"
226  "sw %[temp2], 8(%[dst]) \n\t"
227  "sw %[temp3], 12(%[dst]) \n\t"
228  "sw %[temp4], 16(%[dst]) \n\t"
229  "sw %[temp5], 20(%[dst]) \n\t"
230  "sw %[temp6], 24(%[dst]) \n\t"
231  "sw %[temp7], 28(%[dst]) \n\t"
232  "bne %[src], %[loop_end], 1b \n\t"
233  " addiu %[dst], %[dst], 32 \n\t"
234  ".set pop \n\t"
235 
236  : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),
237  [temp2]"=&r"(temp2), [temp3]"=&r"(temp3),
238  [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
239  [temp6]"=&r"(temp6), [temp7]"=&r"(temp7),
240  [loop_end]"=&r"(loop_end), [src]"+r"(buf1),
241  [dst]"+r"(buf2)
242  :
243  : "memory"
244  );
245  }
246  }
247  }
248 
249  // buffer update
250  if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) {
251  ac->fdsp.vector_fmul_window(saved + 64, buf + 4*128 + 64, buf + 5*128, swindow, 64);
252  ac->fdsp.vector_fmul_window(saved + 192, buf + 5*128 + 64, buf + 6*128, swindow, 64);
253  ac->fdsp.vector_fmul_window(saved + 320, buf + 6*128 + 64, buf + 7*128, swindow, 64);
254  {
255  float *buf1 = buf + 7*128 + 64;
256  float *buf2 = saved + 448;
257  int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;
258  int loop_end;
259 
260  /* loop unrolled 8 times */
261  __asm__ volatile (
262  ".set push \n\t"
263  ".set noreorder \n\t"
264  "addiu %[loop_end], %[src], 256 \n\t"
265  "1: \n\t"
266  "lw %[temp0], 0(%[src]) \n\t"
267  "lw %[temp1], 4(%[src]) \n\t"
268  "lw %[temp2], 8(%[src]) \n\t"
269  "lw %[temp3], 12(%[src]) \n\t"
270  "lw %[temp4], 16(%[src]) \n\t"
271  "lw %[temp5], 20(%[src]) \n\t"
272  "lw %[temp6], 24(%[src]) \n\t"
273  "lw %[temp7], 28(%[src]) \n\t"
274  "addiu %[src], %[src], 32 \n\t"
275  "sw %[temp0], 0(%[dst]) \n\t"
276  "sw %[temp1], 4(%[dst]) \n\t"
277  "sw %[temp2], 8(%[dst]) \n\t"
278  "sw %[temp3], 12(%[dst]) \n\t"
279  "sw %[temp4], 16(%[dst]) \n\t"
280  "sw %[temp5], 20(%[dst]) \n\t"
281  "sw %[temp6], 24(%[dst]) \n\t"
282  "sw %[temp7], 28(%[dst]) \n\t"
283  "bne %[src], %[loop_end], 1b \n\t"
284  " addiu %[dst], %[dst], 32 \n\t"
285  ".set pop \n\t"
286 
287  : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),
288  [temp2]"=&r"(temp2), [temp3]"=&r"(temp3),
289  [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
290  [temp6]"=&r"(temp6), [temp7]"=&r"(temp7),
291  [loop_end]"=&r"(loop_end), [src]"+r"(buf1),
292  [dst]"+r"(buf2)
293  :
294  : "memory"
295  );
296  }
297  } else if (ics->window_sequence[0] == LONG_START_SEQUENCE) {
298  float *buf1 = buf + 512;
299  float *buf2 = saved;
300  int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;
301  int loop_end;
302 
303  /* loop unrolled 8 times */
304  __asm__ volatile (
305  ".set push \n\t"
306  ".set noreorder \n\t"
307  "addiu %[loop_end], %[src], 1792 \n\t"
308  "1: \n\t"
309  "lw %[temp0], 0(%[src]) \n\t"
310  "lw %[temp1], 4(%[src]) \n\t"
311  "lw %[temp2], 8(%[src]) \n\t"
312  "lw %[temp3], 12(%[src]) \n\t"
313  "lw %[temp4], 16(%[src]) \n\t"
314  "lw %[temp5], 20(%[src]) \n\t"
315  "lw %[temp6], 24(%[src]) \n\t"
316  "lw %[temp7], 28(%[src]) \n\t"
317  "addiu %[src], %[src], 32 \n\t"
318  "sw %[temp0], 0(%[dst]) \n\t"
319  "sw %[temp1], 4(%[dst]) \n\t"
320  "sw %[temp2], 8(%[dst]) \n\t"
321  "sw %[temp3], 12(%[dst]) \n\t"
322  "sw %[temp4], 16(%[dst]) \n\t"
323  "sw %[temp5], 20(%[dst]) \n\t"
324  "sw %[temp6], 24(%[dst]) \n\t"
325  "sw %[temp7], 28(%[dst]) \n\t"
326  "bne %[src], %[loop_end], 1b \n\t"
327  " addiu %[dst], %[dst], 32 \n\t"
328  ".set pop \n\t"
329 
330  : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),
331  [temp2]"=&r"(temp2), [temp3]"=&r"(temp3),
332  [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
333  [temp6]"=&r"(temp6), [temp7]"=&r"(temp7),
334  [loop_end]"=&r"(loop_end), [src]"+r"(buf1),
335  [dst]"+r"(buf2)
336  :
337  : "memory"
338  );
339  {
340  float *buf1 = buf + 7*128 + 64;
341  float *buf2 = saved + 448;
342  int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;
343  int loop_end;
344 
345  /* loop unrolled 8 times */
346  __asm__ volatile (
347  ".set push \n\t"
348  ".set noreorder \n\t"
349  "addiu %[loop_end], %[src], 256 \n\t"
350  "1: \n\t"
351  "lw %[temp0], 0(%[src]) \n\t"
352  "lw %[temp1], 4(%[src]) \n\t"
353  "lw %[temp2], 8(%[src]) \n\t"
354  "lw %[temp3], 12(%[src]) \n\t"
355  "lw %[temp4], 16(%[src]) \n\t"
356  "lw %[temp5], 20(%[src]) \n\t"
357  "lw %[temp6], 24(%[src]) \n\t"
358  "lw %[temp7], 28(%[src]) \n\t"
359  "addiu %[src], %[src], 32 \n\t"
360  "sw %[temp0], 0(%[dst]) \n\t"
361  "sw %[temp1], 4(%[dst]) \n\t"
362  "sw %[temp2], 8(%[dst]) \n\t"
363  "sw %[temp3], 12(%[dst]) \n\t"
364  "sw %[temp4], 16(%[dst]) \n\t"
365  "sw %[temp5], 20(%[dst]) \n\t"
366  "sw %[temp6], 24(%[dst]) \n\t"
367  "sw %[temp7], 28(%[dst]) \n\t"
368  "bne %[src], %[loop_end], 1b \n\t"
369  " addiu %[dst], %[dst], 32 \n\t"
370  ".set pop \n\t"
371 
372  : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),
373  [temp2]"=&r"(temp2), [temp3]"=&r"(temp3),
374  [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
375  [temp6]"=&r"(temp6), [temp7]"=&r"(temp7),
376  [loop_end]"=&r"(loop_end), [src]"+r"(buf1),
377  [dst]"+r"(buf2)
378  :
379  : "memory"
380  );
381  }
382  } else { // LONG_STOP or ONLY_LONG
383  float *buf1 = buf + 512;
384  float *buf2 = saved;
385  int temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7;
386  int loop_end;
387 
388  /* loop unrolled 8 times */
389  __asm__ volatile (
390  ".set push \n\t"
391  ".set noreorder \n\t"
392  "addiu %[loop_end], %[src], 2048 \n\t"
393  "1: \n\t"
394  "lw %[temp0], 0(%[src]) \n\t"
395  "lw %[temp1], 4(%[src]) \n\t"
396  "lw %[temp2], 8(%[src]) \n\t"
397  "lw %[temp3], 12(%[src]) \n\t"
398  "lw %[temp4], 16(%[src]) \n\t"
399  "lw %[temp5], 20(%[src]) \n\t"
400  "lw %[temp6], 24(%[src]) \n\t"
401  "lw %[temp7], 28(%[src]) \n\t"
402  "addiu %[src], %[src], 32 \n\t"
403  "sw %[temp0], 0(%[dst]) \n\t"
404  "sw %[temp1], 4(%[dst]) \n\t"
405  "sw %[temp2], 8(%[dst]) \n\t"
406  "sw %[temp3], 12(%[dst]) \n\t"
407  "sw %[temp4], 16(%[dst]) \n\t"
408  "sw %[temp5], 20(%[dst]) \n\t"
409  "sw %[temp6], 24(%[dst]) \n\t"
410  "sw %[temp7], 28(%[dst]) \n\t"
411  "bne %[src], %[loop_end], 1b \n\t"
412  " addiu %[dst], %[dst], 32 \n\t"
413  ".set pop \n\t"
414 
415  : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),
416  [temp2]"=&r"(temp2), [temp3]"=&r"(temp3),
417  [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
418  [temp6]"=&r"(temp6), [temp7]"=&r"(temp7),
419  [loop_end]"=&r"(loop_end), [src]"+r"(buf1),
420  [dst]"+r"(buf2)
421  :
422  : "memory"
423  );
424  }
425 }
426 
427 static void apply_ltp_mips(AACContext *ac, SingleChannelElement *sce)
428 {
429  const LongTermPrediction *ltp = &sce->ics.ltp;
430  const uint16_t *offsets = sce->ics.swb_offset;
431  int i, sfb;
432  int j, k;
433 
434  if (sce->ics.window_sequence[0] != EIGHT_SHORT_SEQUENCE) {
435  float *predTime = sce->ret;
436  float *predFreq = ac->buf_mdct;
437  float *p_predTime;
438  int16_t num_samples = 2048;
439 
440  if (ltp->lag < 1024)
441  num_samples = ltp->lag + 1024;
442  j = (2048 - num_samples) >> 2;
443  k = (2048 - num_samples) & 3;
444  p_predTime = &predTime[num_samples];
445 
446  for (i = 0; i < num_samples; i++)
447  predTime[i] = sce->ltp_state[i + 2048 - ltp->lag] * ltp->coef;
448  for (i = 0; i < j; i++) {
449 
450  /* loop unrolled 4 times */
451  __asm__ volatile (
452  "sw $0, 0(%[p_predTime]) \n\t"
453  "sw $0, 4(%[p_predTime]) \n\t"
454  "sw $0, 8(%[p_predTime]) \n\t"
455  "sw $0, 12(%[p_predTime]) \n\t"
456  "addiu %[p_predTime], %[p_predTime], 16 \n\t"
457 
458  : [p_predTime]"+r"(p_predTime)
459  :
460  : "memory"
461  );
462  }
463  for (i = 0; i < k; i++) {
464 
465  __asm__ volatile (
466  "sw $0, 0(%[p_predTime]) \n\t"
467  "addiu %[p_predTime], %[p_predTime], 4 \n\t"
468 
469  : [p_predTime]"+r"(p_predTime)
470  :
471  : "memory"
472  );
473  }
474 
475  ac->windowing_and_mdct_ltp(ac, predFreq, predTime, &sce->ics);
476 
477  if (sce->tns.present)
478  ac->apply_tns(predFreq, &sce->tns, &sce->ics, 0);
479 
480  for (sfb = 0; sfb < FFMIN(sce->ics.max_sfb, MAX_LTP_LONG_SFB); sfb++)
481  if (ltp->used[sfb])
482  for (i = offsets[sfb]; i < offsets[sfb + 1]; i++)
483  sce->coeffs[i] += predFreq[i];
484  }
485 }
486 
487 #if HAVE_MIPSFPU
488 static void update_ltp_mips(AACContext *ac, SingleChannelElement *sce)
489 {
490  IndividualChannelStream *ics = &sce->ics;
491  float *saved = sce->saved;
492  float *saved_ltp = sce->coeffs;
493  const float *lwindow = ics->use_kb_window[0] ? ff_aac_kbd_long_1024 : ff_sine_1024;
494  const float *swindow = ics->use_kb_window[0] ? ff_aac_kbd_short_128 : ff_sine_128;
495  int i;
496  int loop_end, loop_end1, loop_end2;
497  float temp0, temp1, temp2, temp3, temp4, temp5, temp6, temp7, temp8, temp9, temp10, temp11;
498 
499  if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) {
500  float *buf = saved;
501  float *buf0 = saved_ltp;
502  float *p_saved_ltp = saved_ltp + 576;
503  float *ptr1 = &saved_ltp[512];
504  float *ptr2 = &ac->buf_mdct[1023];
505  float *ptr3 = (float*)&swindow[63];
506  loop_end1 = (int)(p_saved_ltp + 448);
507 
508  /* loop unrolled 8 times */
509  __asm__ volatile (
510  ".set push \n\t"
511  ".set noreorder \n\t"
512  "addiu %[loop_end], %[src], 2048 \n\t"
513  "1: \n\t"
514  "lw %[temp0], 0(%[src]) \n\t"
515  "lw %[temp1], 4(%[src]) \n\t"
516  "lw %[temp2], 8(%[src]) \n\t"
517  "lw %[temp3], 12(%[src]) \n\t"
518  "lw %[temp4], 16(%[src]) \n\t"
519  "lw %[temp5], 20(%[src]) \n\t"
520  "lw %[temp6], 24(%[src]) \n\t"
521  "lw %[temp7], 28(%[src]) \n\t"
522  "addiu %[src], %[src], 32 \n\t"
523  "sw %[temp0], 0(%[dst]) \n\t"
524  "sw %[temp1], 4(%[dst]) \n\t"
525  "sw %[temp2], 8(%[dst]) \n\t"
526  "sw %[temp3], 12(%[dst]) \n\t"
527  "sw %[temp4], 16(%[dst]) \n\t"
528  "sw %[temp5], 20(%[dst]) \n\t"
529  "sw %[temp6], 24(%[dst]) \n\t"
530  "sw %[temp7], 28(%[dst]) \n\t"
531  "bne %[src], %[loop_end], 1b \n\t"
532  " addiu %[dst], %[dst], 32 \n\t"
533  ".set pop \n\t"
534 
535  : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),
536  [temp2]"=&r"(temp2), [temp3]"=&r"(temp3),
537  [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
538  [temp6]"=&r"(temp6), [temp7]"=&r"(temp7),
539  [loop_end]"=&r"(loop_end), [src]"+r"(buf),
540  [dst]"+r"(buf0)
541  :
542  : "memory"
543  );
544 
545  /* loop unrolled 8 times */
546  __asm__ volatile (
547  "1: \n\t"
548  "sw $0, 0(%[p_saved_ltp]) \n\t"
549  "sw $0, 4(%[p_saved_ltp]) \n\t"
550  "sw $0, 8(%[p_saved_ltp]) \n\t"
551  "sw $0, 12(%[p_saved_ltp]) \n\t"
552  "sw $0, 16(%[p_saved_ltp]) \n\t"
553  "sw $0, 20(%[p_saved_ltp]) \n\t"
554  "sw $0, 24(%[p_saved_ltp]) \n\t"
555  "sw $0, 28(%[p_saved_ltp]) \n\t"
556  "addiu %[p_saved_ltp], %[p_saved_ltp], 32 \n\t"
557  "bne %[p_saved_ltp], %[loop_end1], 1b \n\t"
558 
559  : [p_saved_ltp]"+r"(p_saved_ltp)
560  : [loop_end1]"r"(loop_end1)
561  : "memory"
562  );
563 
564  ac->fdsp.vector_fmul_reverse(saved_ltp + 448, ac->buf_mdct + 960, &swindow[64], 64);
565  for (i = 0; i < 16; i++){
566  /* loop unrolled 4 times */
567  __asm__ volatile (
568  "lwc1 %[temp0], 0(%[ptr2]) \n\t"
569  "lwc1 %[temp1], -4(%[ptr2]) \n\t"
570  "lwc1 %[temp2], -8(%[ptr2]) \n\t"
571  "lwc1 %[temp3], -12(%[ptr2]) \n\t"
572  "lwc1 %[temp4], 0(%[ptr3]) \n\t"
573  "lwc1 %[temp5], -4(%[ptr3]) \n\t"
574  "lwc1 %[temp6], -8(%[ptr3]) \n\t"
575  "lwc1 %[temp7], -12(%[ptr3]) \n\t"
576  "mul.s %[temp8], %[temp0], %[temp4] \n\t"
577  "mul.s %[temp9], %[temp1], %[temp5] \n\t"
578  "mul.s %[temp10], %[temp2], %[temp6] \n\t"
579  "mul.s %[temp11], %[temp3], %[temp7] \n\t"
580  "swc1 %[temp8], 0(%[ptr1]) \n\t"
581  "swc1 %[temp9], 4(%[ptr1]) \n\t"
582  "swc1 %[temp10], 8(%[ptr1]) \n\t"
583  "swc1 %[temp11], 12(%[ptr1]) \n\t"
584  "addiu %[ptr1], %[ptr1], 16 \n\t"
585  "addiu %[ptr2], %[ptr2], -16 \n\t"
586  "addiu %[ptr3], %[ptr3], -16 \n\t"
587 
588  : [temp0]"=&f"(temp0), [temp1]"=&f"(temp1),
589  [temp2]"=&f"(temp2), [temp3]"=&f"(temp3),
590  [temp4]"=&f"(temp4), [temp5]"=&f"(temp5),
591  [temp6]"=&f"(temp6), [temp7]"=&f"(temp7),
592  [temp8]"=&f"(temp8), [temp9]"=&f"(temp9),
593  [temp10]"=&f"(temp10), [temp11]"=&f"(temp11),
594  [ptr1]"+r"(ptr1), [ptr2]"+r"(ptr2), [ptr3]"+r"(ptr3)
595  :
596  : "memory"
597  );
598  }
599  } else if (ics->window_sequence[0] == LONG_START_SEQUENCE) {
600  float *buff0 = saved;
601  float *buff1 = saved_ltp;
602  float *ptr1 = &saved_ltp[512];
603  float *ptr2 = &ac->buf_mdct[1023];
604  float *ptr3 = (float*)&swindow[63];
605  loop_end = (int)(saved + 448);
606 
607  /* loop unrolled 8 times */
608  __asm__ volatile (
609  ".set push \n\t"
610  ".set noreorder \n\t"
611  "1: \n\t"
612  "lw %[temp0], 0(%[src]) \n\t"
613  "lw %[temp1], 4(%[src]) \n\t"
614  "lw %[temp2], 8(%[src]) \n\t"
615  "lw %[temp3], 12(%[src]) \n\t"
616  "lw %[temp4], 16(%[src]) \n\t"
617  "lw %[temp5], 20(%[src]) \n\t"
618  "lw %[temp6], 24(%[src]) \n\t"
619  "lw %[temp7], 28(%[src]) \n\t"
620  "addiu %[src], %[src], 32 \n\t"
621  "sw %[temp0], 0(%[dst]) \n\t"
622  "sw %[temp1], 4(%[dst]) \n\t"
623  "sw %[temp2], 8(%[dst]) \n\t"
624  "sw %[temp3], 12(%[dst]) \n\t"
625  "sw %[temp4], 16(%[dst]) \n\t"
626  "sw %[temp5], 20(%[dst]) \n\t"
627  "sw %[temp6], 24(%[dst]) \n\t"
628  "sw %[temp7], 28(%[dst]) \n\t"
629  "sw $0, 2304(%[dst]) \n\t"
630  "sw $0, 2308(%[dst]) \n\t"
631  "sw $0, 2312(%[dst]) \n\t"
632  "sw $0, 2316(%[dst]) \n\t"
633  "sw $0, 2320(%[dst]) \n\t"
634  "sw $0, 2324(%[dst]) \n\t"
635  "sw $0, 2328(%[dst]) \n\t"
636  "sw $0, 2332(%[dst]) \n\t"
637  "bne %[src], %[loop_end], 1b \n\t"
638  " addiu %[dst], %[dst], 32 \n\t"
639  ".set pop \n\t"
640 
641  : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),
642  [temp2]"=&r"(temp2), [temp3]"=&r"(temp3),
643  [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
644  [temp6]"=&r"(temp6), [temp7]"=&r"(temp7),
645  [src]"+r"(buff0), [dst]"+r"(buff1)
646  : [loop_end]"r"(loop_end)
647  : "memory"
648  );
649  ac->fdsp.vector_fmul_reverse(saved_ltp + 448, ac->buf_mdct + 960, &swindow[64], 64);
650  for (i = 0; i < 16; i++){
651  /* loop unrolled 8 times */
652  __asm__ volatile (
653  "lwc1 %[temp0], 0(%[ptr2]) \n\t"
654  "lwc1 %[temp1], -4(%[ptr2]) \n\t"
655  "lwc1 %[temp2], -8(%[ptr2]) \n\t"
656  "lwc1 %[temp3], -12(%[ptr2]) \n\t"
657  "lwc1 %[temp4], 0(%[ptr3]) \n\t"
658  "lwc1 %[temp5], -4(%[ptr3]) \n\t"
659  "lwc1 %[temp6], -8(%[ptr3]) \n\t"
660  "lwc1 %[temp7], -12(%[ptr3]) \n\t"
661  "mul.s %[temp8], %[temp0], %[temp4] \n\t"
662  "mul.s %[temp9], %[temp1], %[temp5] \n\t"
663  "mul.s %[temp10], %[temp2], %[temp6] \n\t"
664  "mul.s %[temp11], %[temp3], %[temp7] \n\t"
665  "swc1 %[temp8], 0(%[ptr1]) \n\t"
666  "swc1 %[temp9], 4(%[ptr1]) \n\t"
667  "swc1 %[temp10], 8(%[ptr1]) \n\t"
668  "swc1 %[temp11], 12(%[ptr1]) \n\t"
669  "addiu %[ptr1], %[ptr1], 16 \n\t"
670  "addiu %[ptr2], %[ptr2], -16 \n\t"
671  "addiu %[ptr3], %[ptr3], -16 \n\t"
672 
673  : [temp0]"=&f"(temp0), [temp1]"=&f"(temp1),
674  [temp2]"=&f"(temp2), [temp3]"=&f"(temp3),
675  [temp4]"=&f"(temp4), [temp5]"=&f"(temp5),
676  [temp6]"=&f"(temp6), [temp7]"=&f"(temp7),
677  [temp8]"=&f"(temp8), [temp9]"=&f"(temp9),
678  [temp10]"=&f"(temp10), [temp11]"=&f"(temp11),
679  [ptr1]"+r"(ptr1), [ptr2]"+r"(ptr2), [ptr3]"+r"(ptr3)
680  :
681  : "memory"
682  );
683  }
684  } else { // LONG_STOP or ONLY_LONG
685  float *ptr1, *ptr2, *ptr3;
686  ac->fdsp.vector_fmul_reverse(saved_ltp, ac->buf_mdct + 512, &lwindow[512], 512);
687 
688  ptr1 = &saved_ltp[512];
689  ptr2 = &ac->buf_mdct[1023];
690  ptr3 = (float*)&lwindow[511];
691 
692  for (i = 0; i < 512; i+=4){
693  /* loop unrolled 4 times */
694  __asm__ volatile (
695  "lwc1 %[temp0], 0(%[ptr2]) \n\t"
696  "lwc1 %[temp1], -4(%[ptr2]) \n\t"
697  "lwc1 %[temp2], -8(%[ptr2]) \n\t"
698  "lwc1 %[temp3], -12(%[ptr2]) \n\t"
699  "lwc1 %[temp4], 0(%[ptr3]) \n\t"
700  "lwc1 %[temp5], -4(%[ptr3]) \n\t"
701  "lwc1 %[temp6], -8(%[ptr3]) \n\t"
702  "lwc1 %[temp7], -12(%[ptr3]) \n\t"
703  "mul.s %[temp8], %[temp0], %[temp4] \n\t"
704  "mul.s %[temp9], %[temp1], %[temp5] \n\t"
705  "mul.s %[temp10], %[temp2], %[temp6] \n\t"
706  "mul.s %[temp11], %[temp3], %[temp7] \n\t"
707  "swc1 %[temp8], 0(%[ptr1]) \n\t"
708  "swc1 %[temp9], 4(%[ptr1]) \n\t"
709  "swc1 %[temp10], 8(%[ptr1]) \n\t"
710  "swc1 %[temp11], 12(%[ptr1]) \n\t"
711  "addiu %[ptr1], %[ptr1], 16 \n\t"
712  "addiu %[ptr2], %[ptr2], -16 \n\t"
713  "addiu %[ptr3], %[ptr3], -16 \n\t"
714 
715  : [temp0]"=&f"(temp0), [temp1]"=&f"(temp1),
716  [temp2]"=&f"(temp2), [temp3]"=&f"(temp3),
717  [temp4]"=&f"(temp4), [temp5]"=&f"(temp5),
718  [temp6]"=&f"(temp6), [temp7]"=&f"(temp7),
719  [temp8]"=&f"(temp8), [temp9]"=&f"(temp9),
720  [temp10]"=&f"(temp10), [temp11]"=&f"(temp11),
721  [ptr1]"+r"(ptr1), [ptr2]"+r"(ptr2),
722  [ptr3]"+r"(ptr3)
723  :
724  : "memory"
725  );
726  }
727  }
728 
729  {
730  float *buf1 = sce->ltp_state+1024;
731  float *buf2 = sce->ltp_state;
732  float *buf3 = sce->ret;
733  float *buf4 = sce->ltp_state+1024;
734  float *buf5 = saved_ltp;
735  float *buf6 = sce->ltp_state+2048;
736 
737  /* loops unrolled 8 times */
738  __asm__ volatile (
739  ".set push \n\t"
740  ".set noreorder \n\t"
741  "addiu %[loop_end], %[src], 4096 \n\t"
742  "addiu %[loop_end1], %[src1], 4096 \n\t"
743  "addiu %[loop_end2], %[src2], 4096 \n\t"
744  "1: \n\t"
745  "lw %[temp0], 0(%[src]) \n\t"
746  "lw %[temp1], 4(%[src]) \n\t"
747  "lw %[temp2], 8(%[src]) \n\t"
748  "lw %[temp3], 12(%[src]) \n\t"
749  "lw %[temp4], 16(%[src]) \n\t"
750  "lw %[temp5], 20(%[src]) \n\t"
751  "lw %[temp6], 24(%[src]) \n\t"
752  "lw %[temp7], 28(%[src]) \n\t"
753  "addiu %[src], %[src], 32 \n\t"
754  "sw %[temp0], 0(%[dst]) \n\t"
755  "sw %[temp1], 4(%[dst]) \n\t"
756  "sw %[temp2], 8(%[dst]) \n\t"
757  "sw %[temp3], 12(%[dst]) \n\t"
758  "sw %[temp4], 16(%[dst]) \n\t"
759  "sw %[temp5], 20(%[dst]) \n\t"
760  "sw %[temp6], 24(%[dst]) \n\t"
761  "sw %[temp7], 28(%[dst]) \n\t"
762  "bne %[src], %[loop_end], 1b \n\t"
763  " addiu %[dst], %[dst], 32 \n\t"
764  "2: \n\t"
765  "lw %[temp0], 0(%[src1]) \n\t"
766  "lw %[temp1], 4(%[src1]) \n\t"
767  "lw %[temp2], 8(%[src1]) \n\t"
768  "lw %[temp3], 12(%[src1]) \n\t"
769  "lw %[temp4], 16(%[src1]) \n\t"
770  "lw %[temp5], 20(%[src1]) \n\t"
771  "lw %[temp6], 24(%[src1]) \n\t"
772  "lw %[temp7], 28(%[src1]) \n\t"
773  "addiu %[src1], %[src1], 32 \n\t"
774  "sw %[temp0], 0(%[dst1]) \n\t"
775  "sw %[temp1], 4(%[dst1]) \n\t"
776  "sw %[temp2], 8(%[dst1]) \n\t"
777  "sw %[temp3], 12(%[dst1]) \n\t"
778  "sw %[temp4], 16(%[dst1]) \n\t"
779  "sw %[temp5], 20(%[dst1]) \n\t"
780  "sw %[temp6], 24(%[dst1]) \n\t"
781  "sw %[temp7], 28(%[dst1]) \n\t"
782  "bne %[src1], %[loop_end1], 2b \n\t"
783  " addiu %[dst1], %[dst1], 32 \n\t"
784  "3: \n\t"
785  "lw %[temp0], 0(%[src2]) \n\t"
786  "lw %[temp1], 4(%[src2]) \n\t"
787  "lw %[temp2], 8(%[src2]) \n\t"
788  "lw %[temp3], 12(%[src2]) \n\t"
789  "lw %[temp4], 16(%[src2]) \n\t"
790  "lw %[temp5], 20(%[src2]) \n\t"
791  "lw %[temp6], 24(%[src2]) \n\t"
792  "lw %[temp7], 28(%[src2]) \n\t"
793  "addiu %[src2], %[src2], 32 \n\t"
794  "sw %[temp0], 0(%[dst2]) \n\t"
795  "sw %[temp1], 4(%[dst2]) \n\t"
796  "sw %[temp2], 8(%[dst2]) \n\t"
797  "sw %[temp3], 12(%[dst2]) \n\t"
798  "sw %[temp4], 16(%[dst2]) \n\t"
799  "sw %[temp5], 20(%[dst2]) \n\t"
800  "sw %[temp6], 24(%[dst2]) \n\t"
801  "sw %[temp7], 28(%[dst2]) \n\t"
802  "bne %[src2], %[loop_end2], 3b \n\t"
803  " addiu %[dst2], %[dst2], 32 \n\t"
804  ".set pop \n\t"
805 
806  : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),
807  [temp2]"=&r"(temp2), [temp3]"=&r"(temp3),
808  [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
809  [temp6]"=&r"(temp6), [temp7]"=&r"(temp7),
810  [loop_end]"=&r"(loop_end), [loop_end1]"=&r"(loop_end1),
811  [loop_end2]"=&r"(loop_end2), [src]"+r"(buf1),
812  [dst]"+r"(buf2), [src1]"+r"(buf3), [dst1]"+r"(buf4),
813  [src2]"+r"(buf5), [dst2]"+r"(buf6)
814  :
815  : "memory"
816  );
817  }
818 }
819 #endif /* HAVE_MIPSFPU */
820 #endif /* HAVE_INLINE_ASM */
821 
822 void ff_aacdec_init_mips(AACContext *c)
823 {
824 #if HAVE_INLINE_ASM
825  c->imdct_and_windowing = imdct_and_windowing_mips;
826  c->apply_ltp = apply_ltp_mips;
827 #if HAVE_MIPSFPU
828  c->update_ltp = update_ltp_mips;
829 #endif /* HAVE_MIPSFPU */
830 #endif /* HAVE_INLINE_ASM */
831 }
Generated on Sun Mar 23 2014 23:49:59 for FFmpeg by   doxygen 1.8.2