Libav
on2avc.c
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1 /*
2  * On2 Audio for Video Codec decoder
3  *
4  * Copyright (c) 2013 Konstantin Shishkov
5  *
6  * This file is part of Libav.
7  *
8  * Libav is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * Libav is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with Libav; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
24 #include "libavutil/float_dsp.h"
25 #include "avcodec.h"
26 #include "bytestream.h"
27 #include "fft.h"
28 #include "get_bits.h"
29 #include "internal.h"
30 
31 #include "on2avcdata.h"
32 
33 #define ON2AVC_SUBFRAME_SIZE 1024
34 
44 };
45 
46 typedef struct On2AVCContext {
51  void (*wtf)(struct On2AVCContext *ctx, float *out, float *in, int size);
52 
53  int is_av500;
54 
55  const On2AVCMode *modes;
59  const int *band_start;
60 
61  int grouping[8];
64 
65  int is_long;
66 
70 
72 
74  VLC cb_vlc[16];
75 
76  float scale_tab[128];
77 
80 
86 
88 {
89  int w, b, band_off = 0;
90 
91  c->ms_present = get_bits1(gb);
92  if (!c->ms_present)
93  return;
94  for (w = 0; w < c->num_windows; w++) {
95  if (!c->grouping[w]) {
96  memcpy(c->ms_info + band_off,
97  c->ms_info + band_off - c->num_bands,
98  c->num_bands * sizeof(*c->ms_info));
99  band_off += c->num_bands;
100  continue;
101  }
102  for (b = 0; b < c->num_bands; b++)
103  c->ms_info[band_off++] = get_bits1(gb);
104  }
105 }
106 
107 // do not see Table 17 in ISO/IEC 13818-7
109 {
110  int bits_per_sect = c->is_long ? 5 : 3;
111  int esc_val = (1 << bits_per_sect) - 1;
112  int num_bands = c->num_bands * c->num_windows;
113  int band = 0, i, band_type, run_len, run;
114 
115  while (band < num_bands) {
116  band_type = get_bits(gb, 4);
117  run_len = 1;
118  do {
119  run = get_bits(gb, bits_per_sect);
120  run_len += run;
121  } while (run == esc_val);
122  if (band + run_len > num_bands) {
123  av_log(c->avctx, AV_LOG_ERROR, "Invalid band type run\n");
124  return AVERROR_INVALIDDATA;
125  }
126  for (i = band; i < band + run_len; i++) {
127  c->band_type[i] = band_type;
128  c->band_run_end[i] = band + run_len;
129  }
130  band += run_len;
131  }
132 
133  return 0;
134 }
135 
136 // completely not like Table 18 in ISO/IEC 13818-7
137 // (no intensity stereo, different coding for the first coefficient)
139 {
140  int w, w2, b, scale, first = 1;
141  int band_off = 0;
142 
143  for (w = 0; w < c->num_windows; w++) {
144  if (!c->grouping[w]) {
145  memcpy(c->band_scales + band_off,
146  c->band_scales + band_off - c->num_bands,
147  c->num_bands * sizeof(*c->band_scales));
148  band_off += c->num_bands;
149  continue;
150  }
151  for (b = 0; b < c->num_bands; b++) {
152  if (!c->band_type[band_off]) {
153  int all_zero = 1;
154  for (w2 = w + 1; w2 < c->num_windows; w2++) {
155  if (c->grouping[w2])
156  break;
157  if (c->band_type[w2 * c->num_bands + b]) {
158  all_zero = 0;
159  break;
160  }
161  }
162  if (all_zero) {
163  c->band_scales[band_off++] = 0;
164  continue;
165  }
166  }
167  if (first) {
168  scale = get_bits(gb, 7);
169  first = 0;
170  } else {
171  scale += get_vlc2(gb, c->scale_diff.table, 9, 3) - 60;
172  }
173  if (scale < 0 || scale > 127) {
174  av_log(c->avctx, AV_LOG_ERROR, "Invalid scale value %d\n",
175  scale);
176  return AVERROR_INVALIDDATA;
177  }
178  c->band_scales[band_off++] = c->scale_tab[scale];
179  }
180  }
181 
182  return 0;
183 }
184 
185 static inline float on2avc_scale(int v, float scale)
186 {
187  return v * sqrtf(abs(v)) * scale;
188 }
189 
190 // spectral data is coded completely differently - there are no unsigned codebooks
191 static int on2avc_decode_quads(On2AVCContext *c, GetBitContext *gb, float *dst,
192  int dst_size, int type, float band_scale)
193 {
194  int i, j, val, val1;
195 
196  for (i = 0; i < dst_size; i += 4) {
197  val = get_vlc2(gb, c->cb_vlc[type].table, 9, 3);
198 
199  for (j = 0; j < 4; j++) {
200  val1 = sign_extend((val >> (12 - j * 4)) & 0xF, 4);
201  *dst++ = on2avc_scale(val1, band_scale);
202  }
203  }
204 
205  return 0;
206 }
207 
208 static inline int get_egolomb(GetBitContext *gb)
209 {
210  int v = 4;
211 
212  while (get_bits1(gb)) {
213  v++;
214  if (v > 30) {
215  av_log(NULL, AV_LOG_WARNING, "Too large golomb code in get_egolomb.\n");
216  v = 30;
217  break;
218  }
219  }
220 
221  return (1 << v) + get_bits_long(gb, v);
222 }
223 
224 static int on2avc_decode_pairs(On2AVCContext *c, GetBitContext *gb, float *dst,
225  int dst_size, int type, float band_scale)
226 {
227  int i, val, val1, val2, sign;
228 
229  for (i = 0; i < dst_size; i += 2) {
230  val = get_vlc2(gb, c->cb_vlc[type].table, 9, 3);
231 
232  val1 = sign_extend(val >> 8, 8);
233  val2 = sign_extend(val & 0xFF, 8);
234  if (type == ON2AVC_ESC_CB) {
235  if (val1 <= -16 || val1 >= 16) {
236  sign = 1 - (val1 < 0) * 2;
237  val1 = sign * get_egolomb(gb);
238  }
239  if (val2 <= -16 || val2 >= 16) {
240  sign = 1 - (val2 < 0) * 2;
241  val2 = sign * get_egolomb(gb);
242  }
243  }
244 
245  *dst++ = on2avc_scale(val1, band_scale);
246  *dst++ = on2avc_scale(val2, band_scale);
247  }
248 
249  return 0;
250 }
251 
253 {
254  int ret;
255  int w, b, band_idx;
256  float *coeff_ptr;
257 
258  if ((ret = on2avc_decode_band_types(c, gb)) < 0)
259  return ret;
260  if ((ret = on2avc_decode_band_scales(c, gb)) < 0)
261  return ret;
262 
263  coeff_ptr = c->coeffs[ch];
264  band_idx = 0;
265  memset(coeff_ptr, 0, ON2AVC_SUBFRAME_SIZE * sizeof(*coeff_ptr));
266  for (w = 0; w < c->num_windows; w++) {
267  for (b = 0; b < c->num_bands; b++) {
268  int band_size = c->band_start[b + 1] - c->band_start[b];
269  int band_type = c->band_type[band_idx + b];
270 
271  if (!band_type) {
272  coeff_ptr += band_size;
273  continue;
274  }
275  if (band_type < 9)
276  on2avc_decode_quads(c, gb, coeff_ptr, band_size, band_type,
277  c->band_scales[band_idx + b]);
278  else
279  on2avc_decode_pairs(c, gb, coeff_ptr, band_size, band_type,
280  c->band_scales[band_idx + b]);
281  coeff_ptr += band_size;
282  }
283  band_idx += c->num_bands;
284  }
285 
286  return 0;
287 }
288 
290 {
291  int w, b, i;
292  int band_off = 0;
293  float *ch0 = c->coeffs[0];
294  float *ch1 = c->coeffs[1];
295 
296  for (w = 0; w < c->num_windows; w++) {
297  for (b = 0; b < c->num_bands; b++) {
298  if (c->ms_info[band_off + b]) {
299  for (i = c->band_start[b]; i < c->band_start[b + 1]; i++) {
300  float l = *ch0, r = *ch1;
301  *ch0++ = l + r;
302  *ch1++ = l - r;
303  }
304  } else {
305  ch0 += c->band_start[b + 1] - c->band_start[b];
306  ch1 += c->band_start[b + 1] - c->band_start[b];
307  }
308  }
309  band_off += c->num_bands;
310  }
311  return 0;
312 }
313 
314 static void zero_head_and_tail(float *src, int len, int order0, int order1)
315 {
316  memset(src, 0, sizeof(*src) * order0);
317  memset(src + len - order1, 0, sizeof(*src) * order1);
318 }
319 
320 static void pretwiddle(float *src, float *dst, int dst_len, int tab_step,
321  int step, int order0, int order1, const double **tabs)
322 {
323  float *src2, *out;
324  const double *tab;
325  int i, j;
326 
327  out = dst;
328  tab = tabs[0];
329  for (i = 0; i < tab_step; i++) {
330  double sum = 0;
331  for (j = 0; j < order0; j++)
332  sum += src[j] * tab[j * tab_step + i];
333  out[i] += sum;
334  }
335 
336  out = dst + dst_len - tab_step;
337  tab = tabs[order0];
338  src2 = src + (dst_len - tab_step) / step + 1 + order0;
339  for (i = 0; i < tab_step; i++) {
340  double sum = 0;
341  for (j = 0; j < order1; j++)
342  sum += src2[j] * tab[j * tab_step + i];
343  out[i] += sum;
344  }
345 }
346 
347 static void twiddle(float *src1, float *src2, int src2_len,
348  const double *tab, int tab_len, int step,
349  int order0, int order1, const double **tabs)
350 {
351  int steps;
352  int mask;
353  int i, j;
354 
355  steps = (src2_len - tab_len) / step + 1;
356  pretwiddle(src1, src2, src2_len, tab_len, step, order0, order1, tabs);
357  mask = tab_len - 1;
358 
359  for (i = 0; i < steps; i++) {
360  float in0 = src1[order0 + i];
361  int pos = (src2_len - 1) & mask;
362 
363  if (pos < tab_len) {
364  const double *t = tab;
365  for (j = pos; j >= 0; j--)
366  src2[j] += in0 * *t++;
367  for (j = 0; j < tab_len - pos - 1; j++)
368  src2[src2_len - j - 1] += in0 * tab[pos + 1 + j];
369  } else {
370  for (j = 0; j < tab_len; j++)
371  src2[pos - j] += in0 * tab[j];
372  }
373  mask = pos + step;
374  }
375 }
376 
377 #define CMUL1_R(s, t, is, it) \
378  s[is + 0] * t[it + 0] - s[is + 1] * t[it + 1]
379 #define CMUL1_I(s, t, is, it) \
380  s[is + 0] * t[it + 1] + s[is + 1] * t[it + 0]
381 #define CMUL2_R(s, t, is, it) \
382  s[is + 0] * t[it + 0] + s[is + 1] * t[it + 1]
383 #define CMUL2_I(s, t, is, it) \
384  s[is + 0] * t[it + 1] - s[is + 1] * t[it + 0]
385 
386 #define CMUL0(dst, id, s0, s1, s2, s3, t0, t1, t2, t3, is, it) \
387  dst[id] = s0[is] * t0[it] + s1[is] * t1[it] \
388  + s2[is] * t2[it] + s3[is] * t3[it]; \
389  dst[id + 1] = s0[is] * t0[it + 1] + s1[is] * t1[it + 1] \
390  + s2[is] * t2[it + 1] + s3[is] * t3[it + 1];
391 
392 #define CMUL1(dst, s0, s1, s2, s3, t0, t1, t2, t3, is, it) \
393  *dst++ = CMUL1_R(s0, t0, is, it) \
394  + CMUL1_R(s1, t1, is, it) \
395  + CMUL1_R(s2, t2, is, it) \
396  + CMUL1_R(s3, t3, is, it); \
397  *dst++ = CMUL1_I(s0, t0, is, it) \
398  + CMUL1_I(s1, t1, is, it) \
399  + CMUL1_I(s2, t2, is, it) \
400  + CMUL1_I(s3, t3, is, it);
401 
402 #define CMUL2(dst, s0, s1, s2, s3, t0, t1, t2, t3, is, it) \
403  *dst++ = CMUL2_R(s0, t0, is, it) \
404  + CMUL2_R(s1, t1, is, it) \
405  + CMUL2_R(s2, t2, is, it) \
406  + CMUL2_R(s3, t3, is, it); \
407  *dst++ = CMUL2_I(s0, t0, is, it) \
408  + CMUL2_I(s1, t1, is, it) \
409  + CMUL2_I(s2, t2, is, it) \
410  + CMUL2_I(s3, t3, is, it);
411 
412 static void combine_fft(float *s0, float *s1, float *s2, float *s3, float *dst,
413  const float *t0, const float *t1,
414  const float *t2, const float *t3, int len, int step)
415 {
416  const float *h0, *h1, *h2, *h3;
417  float *d1, *d2;
418  int tmp, half;
419  int len2 = len >> 1, len4 = len >> 2;
420  int hoff;
421  int i, j, k;
422 
423  tmp = step;
424  for (half = len2; tmp > 1; half <<= 1, tmp >>= 1);
425 
426  h0 = t0 + half;
427  h1 = t1 + half;
428  h2 = t2 + half;
429  h3 = t3 + half;
430 
431  CMUL0(dst, 0, s0, s1, s2, s3, t0, t1, t2, t3, 0, 0);
432 
433  hoff = 2 * step * (len4 >> 1);
434 
435  j = 2;
436  k = 2 * step;
437  d1 = dst + 2;
438  d2 = dst + 2 + (len >> 1);
439  for (i = 0; i < (len4 - 1) >> 1; i++) {
440  CMUL1(d1, s0, s1, s2, s3, t0, t1, t2, t3, j, k);
441  CMUL1(d2, s0, s1, s2, s3, h0, h1, h2, h3, j, k);
442  j += 2;
443  k += 2 * step;
444  }
445  CMUL0(dst, len4, s0, s1, s2, s3, t0, t1, t2, t3, 1, hoff);
446  CMUL0(dst, len4 + len2, s0, s1, s2, s3, h0, h1, h2, h3, 1, hoff);
447 
448  j = len4;
449  k = hoff + 2 * step * len4;
450  d1 = dst + len4 + 2;
451  d2 = dst + len4 + 2 + len2;
452  for (i = 0; i < (len4 - 2) >> 1; i++) {
453  CMUL2(d1, s0, s1, s2, s3, t0, t1, t2, t3, j, k);
454  CMUL2(d2, s0, s1, s2, s3, h0, h1, h2, h3, j, k);
455  j -= 2;
456  k += 2 * step;
457  }
458  CMUL0(dst, len2 + 4, s0, s1, s2, s3, t0, t1, t2, t3, 0, k);
459 }
460 
461 static void wtf_end_512(On2AVCContext *c, float *out, float *src,
462  float *tmp0, float *tmp1)
463 {
464  memcpy(src, tmp0, 384 * sizeof(*tmp0));
465  memcpy(tmp0 + 384, src + 384, 128 * sizeof(*tmp0));
466 
467  zero_head_and_tail(src, 128, 16, 4);
468  zero_head_and_tail(src + 128, 128, 16, 4);
469  zero_head_and_tail(src + 256, 128, 13, 7);
470  zero_head_and_tail(src + 384, 128, 15, 5);
471 
472  c->fft128.fft_permute(&c->fft128, (FFTComplex*)src);
473  c->fft128.fft_permute(&c->fft128, (FFTComplex*)(src + 128));
474  c->fft128.fft_permute(&c->fft128, (FFTComplex*)(src + 256));
475  c->fft128.fft_permute(&c->fft128, (FFTComplex*)(src + 384));
476  c->fft128.fft_calc(&c->fft128, (FFTComplex*)src);
477  c->fft128.fft_calc(&c->fft128, (FFTComplex*)(src + 128));
478  c->fft128.fft_calc(&c->fft128, (FFTComplex*)(src + 256));
479  c->fft128.fft_calc(&c->fft128, (FFTComplex*)(src + 384));
480  combine_fft(src, src + 128, src + 256, src + 384, tmp1,
483  c->fft512.fft_permute(&c->fft512, (FFTComplex*)tmp1);
484  c->fft512.fft_calc(&c->fft512, (FFTComplex*)tmp1);
485 
486  pretwiddle(&tmp0[ 0], tmp1, 512, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
487  pretwiddle(&tmp0[128], tmp1, 512, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
488  pretwiddle(&tmp0[256], tmp1, 512, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
489  pretwiddle(&tmp0[384], tmp1, 512, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
490 
491  memcpy(src, tmp1, 512 * sizeof(float));
492 }
493 
494 static void wtf_end_1024(On2AVCContext *c, float *out, float *src,
495  float *tmp0, float *tmp1)
496 {
497  memcpy(src, tmp0, 768 * sizeof(*tmp0));
498  memcpy(tmp0 + 768, src + 768, 256 * sizeof(*tmp0));
499 
500  zero_head_and_tail(src, 256, 16, 4);
501  zero_head_and_tail(src + 256, 256, 16, 4);
502  zero_head_and_tail(src + 512, 256, 13, 7);
503  zero_head_and_tail(src + 768, 256, 15, 5);
504 
505  c->fft256.fft_permute(&c->fft256, (FFTComplex*)src);
506  c->fft256.fft_permute(&c->fft256, (FFTComplex*)(src + 256));
507  c->fft256.fft_permute(&c->fft256, (FFTComplex*)(src + 512));
508  c->fft256.fft_permute(&c->fft256, (FFTComplex*)(src + 768));
509  c->fft256.fft_calc(&c->fft256, (FFTComplex*)src);
510  c->fft256.fft_calc(&c->fft256, (FFTComplex*)(src + 256));
511  c->fft256.fft_calc(&c->fft256, (FFTComplex*)(src + 512));
512  c->fft256.fft_calc(&c->fft256, (FFTComplex*)(src + 768));
513  combine_fft(src, src + 256, src + 512, src + 768, tmp1,
516  c->fft1024.fft_permute(&c->fft1024, (FFTComplex*)tmp1);
517  c->fft1024.fft_calc(&c->fft1024, (FFTComplex*)tmp1);
518 
519  pretwiddle(&tmp0[ 0], tmp1, 1024, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
520  pretwiddle(&tmp0[256], tmp1, 1024, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
521  pretwiddle(&tmp0[512], tmp1, 1024, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
522  pretwiddle(&tmp0[768], tmp1, 1024, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
523 
524  memcpy(src, tmp1, 1024 * sizeof(float));
525 }
526 
527 static void wtf_40(On2AVCContext *c, float *out, float *src, int size)
528 {
529  float *tmp0 = c->temp, *tmp1 = c->temp + 1024;
530 
531  memset(tmp0, 0, sizeof(*tmp0) * 1024);
532  memset(tmp1, 0, sizeof(*tmp1) * 1024);
533 
534  if (size == 512) {
535  twiddle(src, &tmp0[ 0], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
536  twiddle(src + 8, &tmp0[ 0], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
537  twiddle(src + 16, &tmp0[ 16], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
538  twiddle(src + 24, &tmp0[ 16], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
539  twiddle(src + 32, &tmp0[ 32], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
540  twiddle(src + 40, &tmp0[ 32], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
541  twiddle(src + 48, &tmp0[ 48], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
542  twiddle(src + 56, &tmp0[ 48], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
543  twiddle(&tmp0[ 0], &tmp1[ 0], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
544  twiddle(&tmp0[16], &tmp1[ 0], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
545  twiddle(&tmp0[32], &tmp1[ 32], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
546  twiddle(&tmp0[48], &tmp1[ 32], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
547  twiddle(src + 64, &tmp1[ 64], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
548  twiddle(src + 80, &tmp1[ 64], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
549  twiddle(src + 96, &tmp1[ 96], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
550  twiddle(src + 112, &tmp1[ 96], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
551  twiddle(src + 128, &tmp1[128], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
552  twiddle(src + 144, &tmp1[128], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
553  twiddle(src + 160, &tmp1[160], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
554  twiddle(src + 176, &tmp1[160], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
555 
556  memset(tmp0, 0, 64 * sizeof(*tmp0));
557 
558  twiddle(&tmp1[ 0], &tmp0[ 0], 128, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
559  twiddle(&tmp1[ 32], &tmp0[ 0], 128, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
560  twiddle(&tmp1[ 64], &tmp0[ 0], 128, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
561  twiddle(&tmp1[ 96], &tmp0[ 0], 128, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
562  twiddle(&tmp1[128], &tmp0[128], 128, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
563  twiddle(&tmp1[160], &tmp0[128], 128, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
564  twiddle(src + 192, &tmp0[128], 128, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
565  twiddle(src + 224, &tmp0[128], 128, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
566  twiddle(src + 256, &tmp0[256], 128, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
567  twiddle(src + 288, &tmp0[256], 128, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
568  twiddle(src + 320, &tmp0[256], 128, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
569  twiddle(src + 352, &tmp0[256], 128, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
570 
571  wtf_end_512(c, out, src, tmp0, tmp1);
572  } else {
573  twiddle(src, &tmp0[ 0], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
574  twiddle(src + 16, &tmp0[ 0], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
575  twiddle(src + 32, &tmp0[ 32], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
576  twiddle(src + 48, &tmp0[ 32], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
577  twiddle(src + 64, &tmp0[ 64], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
578  twiddle(src + 80, &tmp0[ 64], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
579  twiddle(src + 96, &tmp0[ 96], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
580  twiddle(src + 112, &tmp0[ 96], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
581  twiddle(&tmp0[ 0], &tmp1[ 0], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
582  twiddle(&tmp0[32], &tmp1[ 0], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
583  twiddle(&tmp0[64], &tmp1[ 64], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
584  twiddle(&tmp0[96], &tmp1[ 64], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
585  twiddle(src + 128, &tmp1[128], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
586  twiddle(src + 160, &tmp1[128], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
587  twiddle(src + 192, &tmp1[192], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
588  twiddle(src + 224, &tmp1[192], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
589  twiddle(src + 256, &tmp1[256], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
590  twiddle(src + 288, &tmp1[256], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
591  twiddle(src + 320, &tmp1[320], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
592  twiddle(src + 352, &tmp1[320], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
593 
594  memset(tmp0, 0, 128 * sizeof(*tmp0));
595 
596  twiddle(&tmp1[ 0], &tmp0[ 0], 256, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
597  twiddle(&tmp1[ 64], &tmp0[ 0], 256, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
598  twiddle(&tmp1[128], &tmp0[ 0], 256, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
599  twiddle(&tmp1[192], &tmp0[ 0], 256, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
600  twiddle(&tmp1[256], &tmp0[256], 256, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
601  twiddle(&tmp1[320], &tmp0[256], 256, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
602  twiddle(src + 384, &tmp0[256], 256, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
603  twiddle(src + 448, &tmp0[256], 256, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
604  twiddle(src + 512, &tmp0[512], 256, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
605  twiddle(src + 576, &tmp0[512], 256, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
606  twiddle(src + 640, &tmp0[512], 256, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
607  twiddle(src + 704, &tmp0[512], 256, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
608 
609  wtf_end_1024(c, out, src, tmp0, tmp1);
610  }
611 }
612 
613 static void wtf_44(On2AVCContext *c, float *out, float *src, int size)
614 {
615  float *tmp0 = c->temp, *tmp1 = c->temp + 1024;
616 
617  memset(tmp0, 0, sizeof(*tmp0) * 1024);
618  memset(tmp1, 0, sizeof(*tmp1) * 1024);
619 
620  if (size == 512) {
621  twiddle(src, &tmp0[ 0], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
622  twiddle(src + 8, &tmp0[ 0], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
623  twiddle(src + 16, &tmp0[16], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
624  twiddle(src + 24, &tmp0[16], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
625  twiddle(src + 32, &tmp0[32], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
626  twiddle(src + 40, &tmp0[32], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
627  twiddle(src + 48, &tmp0[48], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
628  twiddle(src + 56, &tmp0[48], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
629  twiddle(&tmp0[ 0], &tmp1[ 0], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
630  twiddle(&tmp0[16], &tmp1[ 0], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
631  twiddle(&tmp0[32], &tmp1[32], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
632  twiddle(&tmp0[48], &tmp1[32], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
633  twiddle(src + 64, &tmp1[64], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
634  twiddle(src + 80, &tmp1[64], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
635  twiddle(src + 96, &tmp1[96], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
636  twiddle(src + 112, &tmp1[96], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
637 
638  memset(tmp0, 0, 64 * sizeof(*tmp0));
639 
640  twiddle(&tmp1[ 0], &tmp0[ 0], 128, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
641  twiddle(&tmp1[32], &tmp0[ 0], 128, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
642  twiddle(&tmp1[64], &tmp0[ 0], 128, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
643  twiddle(&tmp1[96], &tmp0[ 0], 128, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
644  twiddle(src + 128, &tmp0[128], 128, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
645  twiddle(src + 160, &tmp0[128], 128, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
646  twiddle(src + 192, &tmp0[128], 128, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
647  twiddle(src + 224, &tmp0[128], 128, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
648  twiddle(src + 256, &tmp0[256], 128, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
649  twiddle(src + 320, &tmp0[256], 128, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
650 
651  wtf_end_512(c, out, src, tmp0, tmp1);
652  } else {
653  twiddle(src, &tmp0[ 0], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
654  twiddle(src + 16, &tmp0[ 0], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
655  twiddle(src + 32, &tmp0[ 32], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
656  twiddle(src + 48, &tmp0[ 32], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
657  twiddle(src + 64, &tmp0[ 64], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
658  twiddle(src + 80, &tmp0[ 64], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
659  twiddle(src + 96, &tmp0[ 96], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
660  twiddle(src + 112, &tmp0[ 96], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
661  twiddle(&tmp0[ 0], &tmp1[ 0], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
662  twiddle(&tmp0[32], &tmp1[ 0], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
663  twiddle(&tmp0[64], &tmp1[ 64], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
664  twiddle(&tmp0[96], &tmp1[ 64], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
665  twiddle(src + 128, &tmp1[128], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
666  twiddle(src + 160, &tmp1[128], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
667  twiddle(src + 192, &tmp1[192], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
668  twiddle(src + 224, &tmp1[192], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
669 
670  memset(tmp0, 0, 128 * sizeof(*tmp0));
671 
672  twiddle(&tmp1[ 0], &tmp0[ 0], 256, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
673  twiddle(&tmp1[ 64], &tmp0[ 0], 256, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
674  twiddle(&tmp1[128], &tmp0[ 0], 256, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
675  twiddle(&tmp1[192], &tmp0[ 0], 256, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
676  twiddle(src + 256, &tmp0[256], 256, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
677  twiddle(src + 320, &tmp0[256], 256, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
678  twiddle(src + 384, &tmp0[256], 256, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
679  twiddle(src + 448, &tmp0[256], 256, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
680  twiddle(src + 512, &tmp0[512], 256, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
681  twiddle(src + 640, &tmp0[512], 256, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
682 
683  wtf_end_1024(c, out, src, tmp0, tmp1);
684  }
685 }
686 
687 static int on2avc_reconstruct_stereo(On2AVCContext *c, AVFrame *dst, int offset)
688 {
689  int ch, i;
690 
691  for (ch = 0; ch < 2; ch++) {
692  float *out = (float*)dst->extended_data[ch] + offset;
693  float *in = c->coeffs[ch];
694  float *saved = c->delay[ch];
695  float *buf = c->mdct_buf;
696  float *wout = out + 448;
697 
698  switch (c->window_type) {
699  case WINDOW_TYPE_EXT7:
700  c->mdct.imdct_half(&c->mdct, buf, in);
701  break;
702  case WINDOW_TYPE_EXT4:
703  c->wtf(c, buf, in, 1024);
704  break;
705  case WINDOW_TYPE_EXT5:
706  c->wtf(c, buf, in, 512);
707  c->mdct.imdct_half(&c->mdct_half, buf + 512, in + 512);
708  for (i = 0; i < 256; i++) {
709  FFSWAP(float, buf[i + 512], buf[1023 - i]);
710  }
711  break;
712  case WINDOW_TYPE_EXT6:
713  c->mdct.imdct_half(&c->mdct_half, buf, in);
714  for (i = 0; i < 256; i++) {
715  FFSWAP(float, buf[i], buf[511 - i]);
716  }
717  c->wtf(c, buf + 512, in + 512, 512);
718  break;
719  }
720 
721  memcpy(out, saved, 448 * sizeof(float));
722  c->fdsp.vector_fmul_window(wout, saved + 448, buf, c->short_win, 64);
723  memcpy(wout + 128, buf + 64, 448 * sizeof(float));
724  memcpy(saved, buf + 512, 448 * sizeof(float));
725  memcpy(saved + 448, buf + 7*128 + 64, 64 * sizeof(float));
726  }
727 
728  return 0;
729 }
730 
731 // not borrowed from aacdec.c - the codec has original design after all
732 static int on2avc_reconstruct_channel(On2AVCContext *c, int channel,
733  AVFrame *dst, int offset)
734 {
735  int i;
736  float *out = (float*)dst->extended_data[channel] + offset;
737  float *in = c->coeffs[channel];
738  float *saved = c->delay[channel];
739  float *buf = c->mdct_buf;
740  float *temp = c->temp;
741 
742  switch (c->window_type) {
745  case WINDOW_TYPE_LONG:
746  c->mdct.imdct_half(&c->mdct, buf, in);
747  break;
748  case WINDOW_TYPE_8SHORT:
749  for (i = 0; i < ON2AVC_SUBFRAME_SIZE; i += ON2AVC_SUBFRAME_SIZE / 8)
750  c->mdct_small.imdct_half(&c->mdct_small, buf + i, in + i);
751  break;
752  }
753 
754  if ((c->prev_window_type == WINDOW_TYPE_LONG ||
756  (c->window_type == WINDOW_TYPE_LONG ||
758  c->fdsp.vector_fmul_window(out, saved, buf, c->long_win, 512);
759  } else {
760  float *wout = out + 448;
761  memcpy(out, saved, 448 * sizeof(float));
762 
763  if (c->window_type == WINDOW_TYPE_8SHORT) {
764  c->fdsp.vector_fmul_window(wout + 0*128, saved + 448, buf + 0*128, c->short_win, 64);
765  c->fdsp.vector_fmul_window(wout + 1*128, buf + 0*128 + 64, buf + 1*128, c->short_win, 64);
766  c->fdsp.vector_fmul_window(wout + 2*128, buf + 1*128 + 64, buf + 2*128, c->short_win, 64);
767  c->fdsp.vector_fmul_window(wout + 3*128, buf + 2*128 + 64, buf + 3*128, c->short_win, 64);
768  c->fdsp.vector_fmul_window(temp, buf + 3*128 + 64, buf + 4*128, c->short_win, 64);
769  memcpy(wout + 4*128, temp, 64 * sizeof(float));
770  } else {
771  c->fdsp.vector_fmul_window(wout, saved + 448, buf, c->short_win, 64);
772  memcpy(wout + 128, buf + 64, 448 * sizeof(float));
773  }
774  }
775 
776  // buffer update
777  switch (c->window_type) {
778  case WINDOW_TYPE_8SHORT:
779  memcpy(saved, temp + 64, 64 * sizeof(float));
780  c->fdsp.vector_fmul_window(saved + 64, buf + 4*128 + 64, buf + 5*128, c->short_win, 64);
781  c->fdsp.vector_fmul_window(saved + 192, buf + 5*128 + 64, buf + 6*128, c->short_win, 64);
782  c->fdsp.vector_fmul_window(saved + 320, buf + 6*128 + 64, buf + 7*128, c->short_win, 64);
783  memcpy(saved + 448, buf + 7*128 + 64, 64 * sizeof(float));
784  break;
786  memcpy(saved, buf + 512, 448 * sizeof(float));
787  memcpy(saved + 448, buf + 7*128 + 64, 64 * sizeof(float));
788  break;
790  case WINDOW_TYPE_LONG:
791  memcpy(saved, buf + 512, 512 * sizeof(float));
792  break;
793  }
794  return 0;
795 }
796 
797 static int on2avc_decode_subframe(On2AVCContext *c, const uint8_t *buf,
798  int buf_size, AVFrame *dst, int offset)
799 {
800  GetBitContext gb;
801  int i, ret;
802 
803  init_get_bits(&gb, buf, buf_size * 8);
804  if (get_bits1(&gb)) {
805  av_log(c->avctx, AV_LOG_ERROR, "enh bit set\n");
806  return AVERROR_INVALIDDATA;
807  }
809  c->window_type = get_bits(&gb, 3);
810  if (c->window_type >= WINDOW_TYPE_EXT4 && c->avctx->channels == 1) {
811  av_log(c->avctx, AV_LOG_ERROR, "stereo mode window for mono audio\n");
812  return AVERROR_INVALIDDATA;
813  }
814 
817  c->num_bands = c->modes[c->window_type].num_bands;
819 
820  c->grouping[0] = 1;
821  for (i = 1; i < c->num_windows; i++)
822  c->grouping[i] = !get_bits1(&gb);
823 
824  on2avc_read_ms_info(c, &gb);
825  for (i = 0; i < c->avctx->channels; i++)
826  if ((ret = on2avc_read_channel_data(c, &gb, i)) < 0)
827  return AVERROR_INVALIDDATA;
828  if (c->avctx->channels == 2 && c->ms_present)
829  on2avc_apply_ms(c);
830  if (c->window_type < WINDOW_TYPE_EXT4) {
831  for (i = 0; i < c->avctx->channels; i++)
832  on2avc_reconstruct_channel(c, i, dst, offset);
833  } else {
834  on2avc_reconstruct_stereo(c, dst, offset);
835  }
836 
837  return 0;
838 }
839 
841  int *got_frame_ptr, AVPacket *avpkt)
842 {
843  AVFrame *frame = data;
844  const uint8_t *buf = avpkt->data;
845  int buf_size = avpkt->size;
846  On2AVCContext *c = avctx->priv_data;
847  GetByteContext gb;
848  int num_frames = 0, frame_size, audio_off;
849  int ret;
850 
851  if (c->is_av500) {
852  /* get output buffer */
854  if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
855  av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
856  return ret;
857  }
858 
859  if ((ret = on2avc_decode_subframe(c, buf, buf_size, frame, 0)) < 0)
860  return ret;
861  } else {
862  bytestream2_init(&gb, buf, buf_size);
863  while (bytestream2_get_bytes_left(&gb) > 2) {
864  frame_size = bytestream2_get_le16(&gb);
866  av_log(avctx, AV_LOG_ERROR, "Invalid subframe size %d\n",
867  frame_size);
868  return AVERROR_INVALIDDATA;
869  }
870  num_frames++;
872  }
873  if (!num_frames) {
874  av_log(avctx, AV_LOG_ERROR, "No subframes present\n");
875  return AVERROR_INVALIDDATA;
876  }
877 
878  /* get output buffer */
879  frame->nb_samples = ON2AVC_SUBFRAME_SIZE * num_frames;
880  if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
881  av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
882  return ret;
883  }
884 
885  audio_off = 0;
886  bytestream2_init(&gb, buf, buf_size);
887  while (bytestream2_get_bytes_left(&gb) > 2) {
888  frame_size = bytestream2_get_le16(&gb);
889  if ((ret = on2avc_decode_subframe(c, gb.buffer, frame_size,
890  frame, audio_off)) < 0)
891  return ret;
892  audio_off += ON2AVC_SUBFRAME_SIZE;
894  }
895  }
896 
897  *got_frame_ptr = 1;
898 
899  return buf_size;
900 }
901 
903 {
904  int i;
905 
906  ff_free_vlc(&c->scale_diff);
907  for (i = 1; i < 16; i++)
908  ff_free_vlc(&c->cb_vlc[i]);
909 }
910 
912 {
913  On2AVCContext *c = avctx->priv_data;
914  int i;
915 
916  c->avctx = avctx;
918  avctx->channel_layout = (avctx->channels == 2) ? AV_CH_LAYOUT_STEREO
920 
921  c->is_av500 = (avctx->codec_tag == 0x500);
922  if (c->is_av500 && avctx->channels == 2) {
923  av_log(avctx, AV_LOG_ERROR, "0x500 version should be mono\n");
924  return AVERROR_INVALIDDATA;
925  }
926  if (avctx->channels > 2) {
927  av_log(avctx, AV_LOG_ERROR, "Only 1 or 2 channels are supported.\n");
928  return AVERROR(EINVAL);
929  }
930  if (avctx->channels == 2)
931  av_log(avctx, AV_LOG_WARNING,
932  "Stereo mode support is not good, patch is welcome\n");
933 
934  for (i = 0; i < 20; i++)
935  c->scale_tab[i] = ceil(pow(10.0, i * 0.1) * 16) / 32;
936  for (; i < 128; i++)
937  c->scale_tab[i] = ceil(pow(10.0, i * 0.1) * 0.5);
938 
939  if (avctx->sample_rate < 32000 || avctx->channels == 1)
941  1024 * sizeof(*c->long_win));
942  else
944  1024 * sizeof(*c->long_win));
945  memcpy(c->short_win, ff_on2avc_window_short, 128 * sizeof(*c->short_win));
946 
947  c->modes = (avctx->sample_rate <= 40000) ? ff_on2avc_modes_40
949  c->wtf = (avctx->sample_rate <= 40000) ? wtf_40
950  : wtf_44;
951 
952  ff_mdct_init(&c->mdct, 11, 1, 1.0 / (32768.0 * 1024.0));
953  ff_mdct_init(&c->mdct_half, 10, 1, 1.0 / (32768.0 * 512.0));
954  ff_mdct_init(&c->mdct_small, 8, 1, 1.0 / (32768.0 * 128.0));
955  ff_fft_init(&c->fft128, 6, 0);
956  ff_fft_init(&c->fft256, 7, 0);
957  ff_fft_init(&c->fft512, 8, 1);
958  ff_fft_init(&c->fft1024, 9, 1);
960 
963  ff_on2avc_scale_diff_codes, 4, 4, 0)) {
964  av_log(avctx, AV_LOG_ERROR, "Cannot init VLC\n");
965  return AVERROR(ENOMEM);
966  }
967  for (i = 1; i < 9; i++) {
968  int idx = i - 1;
970  ff_on2avc_quad_cb_bits[idx], 1, 1,
971  ff_on2avc_quad_cb_codes[idx], 4, 4,
972  ff_on2avc_quad_cb_syms[idx], 2, 2, 0)) {
973  av_log(avctx, AV_LOG_ERROR, "Cannot init VLC\n");
974  on2avc_free_vlcs(c);
975  return AVERROR(ENOMEM);
976  }
977  }
978  for (i = 9; i < 16; i++) {
979  int idx = i - 9;
981  ff_on2avc_pair_cb_bits[idx], 1, 1,
982  ff_on2avc_pair_cb_codes[idx], 2, 2,
983  ff_on2avc_pair_cb_syms[idx], 2, 2, 0)) {
984  av_log(avctx, AV_LOG_ERROR, "Cannot init VLC\n");
985  on2avc_free_vlcs(c);
986  return AVERROR(ENOMEM);
987  }
988  }
989 
990  return 0;
991 }
992 
994 {
995  On2AVCContext *c = avctx->priv_data;
996 
997  ff_mdct_end(&c->mdct);
998  ff_mdct_end(&c->mdct_half);
999  ff_mdct_end(&c->mdct_small);
1000  ff_fft_end(&c->fft128);
1001  ff_fft_end(&c->fft256);
1002  ff_fft_end(&c->fft512);
1003  ff_fft_end(&c->fft1024);
1004 
1005  on2avc_free_vlcs(c);
1006 
1007  return 0;
1008 }
1009 
1010 
1012  .name = "on2avc",
1013  .long_name = NULL_IF_CONFIG_SMALL("On2 Audio for Video Codec"),
1014  .type = AVMEDIA_TYPE_AUDIO,
1015  .id = AV_CODEC_ID_ON2AVC,
1016  .priv_data_size = sizeof(On2AVCContext),
1019  .close = on2avc_decode_close,
1020  .capabilities = AV_CODEC_CAP_DR1,
1021  .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
1023 };
float, planar
Definition: samplefmt.h:71
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:54
static int on2avc_read_channel_data(On2AVCContext *c, GetBitContext *gb, int ch)
Definition: on2avc.c:252
int size
const double ff_on2avc_tab_20_1[]
Definition: on2avcdata.c:7454
This structure describes decoded (raw) audio or video data.
Definition: frame.h:140
const uint8_t *const ff_on2avc_pair_cb_bits[]
Definition: on2avcdata.c:6873
const double * ff_on2avc_tabs_20_84_4[20]
Definition: on2avcdata.c:8853
float coeffs[2][ON2AVC_SUBFRAME_SIZE]
Definition: on2avc.c:78
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:228
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:130
float scale_tab[128]
Definition: on2avc.c:76
float delay[2][ON2AVC_SUBFRAME_SIZE]
Definition: on2avc.c:79
static const uint8_t frame_size[4]
Definition: g723_1.h:219
const On2AVCMode ff_on2avc_modes_40[8]
Definition: on2avcdata.c:91
int size
Definition: avcodec.h:1347
static void on2avc_read_ms_info(On2AVCContext *c, GetBitContext *gb)
Definition: on2avc.c:87
static void twiddle(float *src1, float *src2, int src2_len, const double *tab, int tab_len, int step, int order0, int order1, const double **tabs)
Definition: on2avc.c:347
av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (%s)\, len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic ? ac->func_descr_generic :ac->func_descr)
#define CMUL0(dst, id, s0, s1, s2, s3, t0, t1, t2, t3, is, it)
Definition: on2avc.c:386
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:58
AVCodecContext * avctx
Definition: on2avc.c:47
const double ff_on2avc_tab_84_4[]
Definition: on2avcdata.c:7594
int num_sections
Definition: on2avc.c:69
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
Definition: bytestream.h:132
const int ff_on2avc_quad_cb_elems[]
Definition: on2avcdata.c:6863
int num_windows
Definition: on2avcdata.h:32
uint8_t run
Definition: svq3.c:203
#define AV_CH_LAYOUT_STEREO
#define init_vlc(vlc, nb_bits, nb_codes, bits, bits_wrap, bits_size, codes, codes_wrap, codes_size, flags)
Definition: vlc.h:38
const double * ff_on2avc_tabs_20_84_2[20]
Definition: on2avcdata.c:8837
const double * ff_on2avc_tabs_4_10_2[4]
Definition: on2avcdata.c:7648
AVCodec.
Definition: avcodec.h:3120
const double * ff_on2avc_tabs_19_40_1[19]
Definition: on2avcdata.c:7930
float mdct_buf[ON2AVC_SUBFRAME_SIZE]
Definition: on2avc.c:82
const double * ff_on2avc_tabs_19_40_2[19]
Definition: on2avcdata.c:7938
static int on2avc_apply_ms(On2AVCContext *c)
Definition: on2avc.c:289
static float on2avc_scale(int v, float scale)
Definition: on2avc.c:185
static int on2avc_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
Definition: on2avc.c:840
static const uint8_t run_len[7][16]
Definition: h264_cavlc.c:218
const uint16_t *const ff_on2avc_pair_cb_codes[]
Definition: on2avcdata.c:6868
int num_bands
Definition: on2avc.c:57
const float ff_on2avc_window_short[128]
Definition: on2avcdata.c:7406
int ff_init_vlc_sparse(VLC *vlc, int nb_bits, int nb_codes, const void *bits, int bits_wrap, int bits_size, const void *codes, int codes_wrap, int codes_size, const void *symbols, int symbols_wrap, int symbols_size, int flags)
Definition: bitstream.c:267
const double * ff_on2avc_tabs_9_20_1[9]
Definition: on2avcdata.c:7727
uint8_t band_type[ON2AVC_MAX_BANDS]
Definition: on2avc.c:67
enum AVSampleFormat sample_fmt
audio sample format
Definition: avcodec.h:2160
uint8_t
#define av_cold
Definition: attributes.h:66
const On2AVCMode * modes
Definition: on2avc.c:55
static void wtf_end_1024(On2AVCContext *c, float *out, float *src, float *tmp0, float *tmp1)
Definition: on2avc.c:494
#define b
Definition: input.c:52
static av_cold int on2avc_decode_init(AVCodecContext *avctx)
Definition: on2avc.c:911
const double ff_on2avc_tab_84_1[]
Definition: on2avcdata.c:7501
const float ff_on2avc_ctab_1[2048]
Definition: on2avcdata.c:8861
static int on2avc_reconstruct_stereo(On2AVCContext *c, AVFrame *dst, int offset)
Definition: on2avc.c:687
const char data[16]
Definition: mxf.c:70
uint8_t * data
Definition: avcodec.h:1346
const uint8_t * buffer
Definition: bytestream.h:33
static int on2avc_decode_band_types(On2AVCContext *c, GetBitContext *gb)
Definition: on2avc.c:108
bitstream reader API header.
int window_type
Definition: on2avc.c:56
static void wtf_40(On2AVCContext *c, float *out, float *src, int size)
Definition: on2avc.c:527
const uint32_t *const ff_on2avc_quad_cb_codes[]
Definition: on2avcdata.c:6848
uint8_t band_run_end[ON2AVC_MAX_BANDS]
Definition: on2avc.c:68
const uint32_t ff_on2avc_scale_diff_codes[ON2AVC_SCALE_DIFFS]
Definition: on2avcdata.c:113
const double ff_on2avc_tab_84_2[]
Definition: on2avcdata.c:7532
const double ff_on2avc_tab_40_2[]
Definition: on2avcdata.c:7484
#define r
Definition: input.c:51
static int on2avc_decode_subframe(On2AVCContext *c, const uint8_t *buf, int buf_size, AVFrame *dst, int offset)
Definition: on2avc.c:797
#define src
Definition: vp8dsp.c:254
void(* vector_fmul_window)(float *dst, const float *src0, const float *src1, const float *win, int len)
Overlap/add with window function.
Definition: float_dsp.h:103
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:124
void(* fft_permute)(struct FFTContext *s, FFTComplex *z)
Do the permutation needed BEFORE calling fft_calc().
Definition: fft.h:86
static const uint16_t mask[17]
Definition: lzw.c:38
int is_av500
Definition: on2avc.c:53
#define AVERROR(e)
Definition: error.h:43
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
Definition: bytestream.h:161
#define CMUL1(dst, s0, s1, s2, s3, t0, t1, t2, t3, is, it)
Definition: on2avc.c:392
#define CMUL2(dst, s0, s1, s2, s3, t0, t1, t2, t3, is, it)
Definition: on2avc.c:402
const float ff_on2avc_window_long_24000[1024]
Definition: on2avcdata.c:7147
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:148
static void pretwiddle(float *src, float *dst, int dst_len, int tab_step, int step, int order0, int order1, const double **tabs)
Definition: on2avc.c:320
static av_always_inline unsigned int bytestream2_get_bytes_left(GetByteContext *g)
Definition: bytestream.h:151
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1503
const char * name
Name of the codec implementation.
Definition: avcodec.h:3127
#define ff_mdct_init
Definition: fft.h:151
const double ff_on2avc_tab_20_2[]
Definition: on2avcdata.c:7461
const uint16_t *const ff_on2avc_pair_cb_syms[]
Definition: on2avcdata.c:6878
int bits_per_section
Definition: on2avc.c:58
const double ff_on2avc_tab_40_1[]
Definition: on2avcdata.c:7471
Definition: vlc.h:26
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:2203
static int get_egolomb(GetBitContext *gb)
Definition: on2avc.c:208
const uint16_t *const ff_on2avc_quad_cb_syms[]
Definition: on2avcdata.c:6858
static av_cold void on2avc_free_vlcs(On2AVCContext *c)
Definition: on2avc.c:902
Definition: fft.h:73
audio channel layout utility functions
#define AV_CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
Definition: avcodec.h:788
static int on2avc_reconstruct_channel(On2AVCContext *c, int channel, AVFrame *dst, int offset)
Definition: on2avc.c:732
static void wtf_end_512(On2AVCContext *c, float *out, float *src, float *tmp0, float *tmp1)
Definition: on2avc.c:461
int ms_info[ON2AVC_MAX_BANDS]
Definition: on2avc.c:63
float short_win[ON2AVC_SUBFRAME_SIZE/8]
Definition: on2avc.c:84
static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
Definition: avconv.c:1288
void(* wtf)(struct On2AVCContext *ctx, float *out, float *in, int size)
Definition: on2avc.c:51
VLC scale_diff
Definition: on2avc.c:73
#define ff_fft_init
Definition: fft.h:132
AVFormatContext * ctx
Definition: movenc.c:48
#define ON2AVC_ESC_CB
Definition: on2avcdata.h:29
const int ff_on2avc_pair_cb_elems[]
Definition: on2avcdata.c:6883
static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE(*table)[2], int bits, int max_depth)
Parse a vlc code.
Definition: get_bits.h:493
WindowTypes
Definition: on2avc.c:35
const On2AVCMode ff_on2avc_modes_44[8]
Definition: on2avcdata.c:102
FFTContext mdct
Definition: on2avc.c:49
int grouping[8]
Definition: on2avc.c:61
float long_win[ON2AVC_SUBFRAME_SIZE]
Definition: on2avc.c:83
#define ON2AVC_SUBFRAME_SIZE
Definition: on2avc.c:33
const uint8_t *const ff_on2avc_quad_cb_bits[]
Definition: on2avcdata.c:6853
NULL
Definition: eval.c:55
const uint8_t ff_on2avc_scale_diff_bits[ON2AVC_SCALE_DIFFS]
Definition: on2avcdata.c:137
#define src1
Definition: h264pred.c:139
Libavcodec external API header.
static int on2avc_decode_quads(On2AVCContext *c, GetBitContext *gb, float *dst, int dst_size, int type, float band_scale)
Definition: on2avc.c:191
AVSampleFormat
Audio Sample Formats.
Definition: samplefmt.h:60
int sample_rate
samples per second
Definition: avcodec.h:2152
int ms_present
Definition: on2avc.c:62
int num_windows
Definition: on2avc.c:57
main external API structure.
Definition: avcodec.h:1409
static void(WINAPI *cond_broadcast)(pthread_cond_t *cond)
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: utils.c:589
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> (&#39;D&#39;<<24) + (&#39;C&#39;<<16) + (&#39;B&#39;<<8) + &#39;A&#39;).
Definition: avcodec.h:1441
const double * ff_on2avc_tabs_20_84_1[20]
Definition: on2avcdata.c:8829
const float ff_on2avc_ctab_2[2048]
Definition: on2avcdata.c:8992
FFTContext fft128
Definition: on2avc.c:50
VLC cb_vlc[16]
Definition: on2avc.c:74
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:267
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
AVCodec ff_on2avc_decoder
Definition: on2avc.c:1011
const double ff_on2avc_tab_10_2[]
Definition: on2avcdata.c:7446
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:362
int num_bands
Definition: on2avcdata.h:33
static int step
Definition: avplay.c:247
AVFloatDSPContext fdsp
Definition: on2avc.c:48
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
Definition: get_bits.h:300
void(* imdct_half)(struct FFTContext *s, FFTSample *output, const FFTSample *input)
Definition: fft.h:93
static av_const int sign_extend(int val, unsigned bits)
Definition: mathops.h:118
av_cold void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int bit_exact)
Initialize a float DSP context.
Definition: float_dsp.c:115
static const struct @53 tabs[]
const float ff_on2avc_ctab_4[2048]
Definition: on2avcdata.c:9254
const int * band_start
Definition: on2avc.c:59
common internal api header.
static av_cold int on2avc_decode_close(AVCodecContext *avctx)
Definition: on2avc.c:993
#define ON2AVC_MAX_BANDS
Definition: on2avcdata.h:28
#define ff_mdct_end
Definition: fft.h:152
FFTContext fft256
Definition: on2avc.c:50
const double * ff_on2avc_tabs_20_84_3[20]
Definition: on2avcdata.c:8845
#define ff_fft_end
Definition: fft.h:133
void(* fft_calc)(struct FFTContext *s, FFTComplex *z)
Do a complex FFT with the parameters defined in ff_fft_init().
Definition: fft.h:91
static av_cold int init(AVCodecParserContext *s)
Definition: h264_parser.c:582
FFTContext mdct_half
Definition: on2avc.c:49
void * priv_data
Definition: avcodec.h:1451
static void zero_head_and_tail(float *src, int len, int order0, int order1)
Definition: on2avc.c:314
int prev_window_type
Definition: on2avc.c:56
const double ff_on2avc_tab_84_3[]
Definition: on2avcdata.c:7563
const int * band_start
Definition: on2avcdata.h:34
FFTContext mdct_small
Definition: on2avc.c:49
FFTContext fft1024
Definition: on2avc.c:50
float temp[ON2AVC_SUBFRAME_SIZE *2]
Definition: on2avc.c:81
int is_long
Definition: on2avc.c:65
int len
int channels
number of audio channels
Definition: avcodec.h:2153
static uint8_t tmp[8]
Definition: des.c:38
VLC_TYPE(* table)[2]
code, bits
Definition: vlc.h:28
static int on2avc_decode_pairs(On2AVCContext *c, GetBitContext *gb, float *dst, int dst_size, int type, float band_scale)
Definition: on2avc.c:224
const float ff_on2avc_window_long_32000[1024]
Definition: on2avcdata.c:6888
static const struct twinvq_data tab
static int on2avc_decode_band_scales(On2AVCContext *c, GetBitContext *gb)
Definition: on2avc.c:138
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:700
FILE * out
Definition: movenc.c:54
const float ff_on2avc_ctab_3[2048]
Definition: on2avcdata.c:9123
static void wtf_44(On2AVCContext *c, float *out, float *src, int size)
Definition: on2avc.c:613
#define ON2AVC_SCALE_DIFFS
Definition: on2avcdata.h:40
const double * ff_on2avc_tabs_4_10_1[4]
Definition: on2avcdata.c:7644
static void combine_fft(float *s0, float *s1, float *s2, float *s3, float *dst, const float *t0, const float *t1, const float *t2, const float *t3, int len, int step)
Definition: on2avc.c:412
#define FFSWAP(type, a, b)
Definition: common.h:69
uint8_t ** extended_data
pointers to the data planes/channels.
Definition: frame.h:174
#define AV_CH_LAYOUT_MONO
const double * ff_on2avc_tabs_9_20_2[9]
Definition: on2avcdata.c:7732
This structure stores compressed data.
Definition: avcodec.h:1323
void ff_free_vlc(VLC *vlc)
Definition: bitstream.c:334
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:184
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:838
float band_scales[ON2AVC_MAX_BANDS]
Definition: on2avc.c:71
FFTContext fft512
Definition: on2avc.c:50
const double ff_on2avc_tab_10_1[]
Definition: on2avcdata.c:7441