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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 FFmpeg.
7  *
8  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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 "golomb.h"
30 #include "internal.h"
31 #include "unary.h"
32 
33 #include "on2avcdata.h"
34 
35 #define ON2AVC_SUBFRAME_SIZE 1024
36 
46 };
47 
48 typedef struct On2AVCContext {
53  void (*wtf)(struct On2AVCContext *ctx, float *out, float *in, int size);
54 
55  int is_av500;
56 
57  const On2AVCMode *modes;
61  const int *band_start;
62 
63  int grouping[8];
66 
67  int is_long;
68 
72 
74 
76  VLC cb_vlc[16];
77 
78  float scale_tab[128];
79 
82 
88 
90 {
91  int w, b, band_off = 0;
92 
93  c->ms_present = get_bits1(gb);
94  if (!c->ms_present)
95  return;
96  for (w = 0; w < c->num_windows; w++) {
97  if (!c->grouping[w]) {
98  memcpy(c->ms_info + band_off,
99  c->ms_info + band_off - c->num_bands,
100  c->num_bands * sizeof(*c->ms_info));
101  band_off += c->num_bands;
102  continue;
103  }
104  for (b = 0; b < c->num_bands; b++)
105  c->ms_info[band_off++] = get_bits1(gb);
106  }
107 }
108 
109 // do not see Table 17 in ISO/IEC 13818-7
111 {
112  int bits_per_sect = c->is_long ? 5 : 3;
113  int esc_val = (1 << bits_per_sect) - 1;
114  int num_bands = c->num_bands * c->num_windows;
115  int band = 0, i, band_type, run_len, run;
116 
117  while (band < num_bands) {
118  band_type = get_bits(gb, 4);
119  run_len = 1;
120  do {
121  run = get_bits(gb, bits_per_sect);
122  if (run > num_bands - band - run_len) {
123  av_log(c->avctx, AV_LOG_ERROR, "Invalid band type run\n");
124  return AVERROR_INVALIDDATA;
125  }
126  run_len += run;
127  } while (run == esc_val);
128  for (i = band; i < band + run_len; i++) {
129  c->band_type[i] = band_type;
130  c->band_run_end[i] = band + run_len;
131  }
132  band += run_len;
133  }
134 
135  return 0;
136 }
137 
138 // completely not like Table 18 in ISO/IEC 13818-7
139 // (no intensity stereo, different coding for the first coefficient)
141 {
142  int w, w2, b, scale, first = 1;
143  int band_off = 0;
144 
145  for (w = 0; w < c->num_windows; w++) {
146  if (!c->grouping[w]) {
147  memcpy(c->band_scales + band_off,
148  c->band_scales + band_off - c->num_bands,
149  c->num_bands * sizeof(*c->band_scales));
150  band_off += c->num_bands;
151  continue;
152  }
153  for (b = 0; b < c->num_bands; b++) {
154  if (!c->band_type[band_off]) {
155  int all_zero = 1;
156  for (w2 = w + 1; w2 < c->num_windows; w2++) {
157  if (c->grouping[w2])
158  break;
159  if (c->band_type[w2 * c->num_bands + b]) {
160  all_zero = 0;
161  break;
162  }
163  }
164  if (all_zero) {
165  c->band_scales[band_off++] = 0;
166  continue;
167  }
168  }
169  if (first) {
170  scale = get_bits(gb, 7);
171  first = 0;
172  } else {
173  scale += get_vlc2(gb, c->scale_diff.table, 9, 3) - 60;
174  }
175  if (scale < 0 || scale > 127) {
176  av_log(c->avctx, AV_LOG_ERROR, "Invalid scale value %d\n",
177  scale);
178  return AVERROR_INVALIDDATA;
179  }
180  c->band_scales[band_off++] = c->scale_tab[scale];
181  }
182  }
183 
184  return 0;
185 }
186 
187 static inline float on2avc_scale(int v, float scale)
188 {
189  return v * sqrtf(abs(v)) * scale;
190 }
191 
192 // spectral data is coded completely differently - there are no unsigned codebooks
193 static int on2avc_decode_quads(On2AVCContext *c, GetBitContext *gb, float *dst,
194  int dst_size, int type, float band_scale)
195 {
196  int i, j, val, val1;
197 
198  for (i = 0; i < dst_size; i += 4) {
199  val = get_vlc2(gb, c->cb_vlc[type].table, 9, 3);
200 
201  for (j = 0; j < 4; j++) {
202  val1 = sign_extend((val >> (12 - j * 4)) & 0xF, 4);
203  *dst++ = on2avc_scale(val1, band_scale);
204  }
205  }
206 
207  return 0;
208 }
209 
210 static inline int get_egolomb(GetBitContext *gb)
211 {
212  int v = 4;
213 
214  while (get_bits1(gb)) {
215  v++;
216  if (v > 30) {
217  av_log(NULL, AV_LOG_WARNING, "Too large golomb code in get_egolomb.\n");
218  v = 30;
219  break;
220  }
221  }
222 
223  return (1 << v) + get_bits_long(gb, v);
224 }
225 
226 static int on2avc_decode_pairs(On2AVCContext *c, GetBitContext *gb, float *dst,
227  int dst_size, int type, float band_scale)
228 {
229  int i, val, val1, val2, sign;
230 
231  for (i = 0; i < dst_size; i += 2) {
232  val = get_vlc2(gb, c->cb_vlc[type].table, 9, 3);
233 
234  val1 = sign_extend(val >> 8, 8);
235  val2 = sign_extend(val & 0xFF, 8);
236  if (type == ON2AVC_ESC_CB) {
237  if (val1 <= -16 || val1 >= 16) {
238  sign = 1 - (val1 < 0) * 2;
239  val1 = sign * get_egolomb(gb);
240  }
241  if (val2 <= -16 || val2 >= 16) {
242  sign = 1 - (val2 < 0) * 2;
243  val2 = sign * get_egolomb(gb);
244  }
245  }
246 
247  *dst++ = on2avc_scale(val1, band_scale);
248  *dst++ = on2avc_scale(val2, band_scale);
249  }
250 
251  return 0;
252 }
253 
255 {
256  int ret;
257  int w, b, band_idx;
258  float *coeff_ptr;
259 
260  if ((ret = on2avc_decode_band_types(c, gb)) < 0)
261  return ret;
262  if ((ret = on2avc_decode_band_scales(c, gb)) < 0)
263  return ret;
264 
265  coeff_ptr = c->coeffs[ch];
266  band_idx = 0;
267  memset(coeff_ptr, 0, ON2AVC_SUBFRAME_SIZE * sizeof(*coeff_ptr));
268  for (w = 0; w < c->num_windows; w++) {
269  for (b = 0; b < c->num_bands; b++) {
270  int band_size = c->band_start[b + 1] - c->band_start[b];
271  int band_type = c->band_type[band_idx + b];
272 
273  if (!band_type) {
274  coeff_ptr += band_size;
275  continue;
276  }
277  if (band_type < 9)
278  on2avc_decode_quads(c, gb, coeff_ptr, band_size, band_type,
279  c->band_scales[band_idx + b]);
280  else
281  on2avc_decode_pairs(c, gb, coeff_ptr, band_size, band_type,
282  c->band_scales[band_idx + b]);
283  coeff_ptr += band_size;
284  }
285  band_idx += c->num_bands;
286  }
287 
288  return 0;
289 }
290 
292 {
293  int w, b, i;
294  int band_off = 0;
295  float *ch0 = c->coeffs[0];
296  float *ch1 = c->coeffs[1];
297 
298  for (w = 0; w < c->num_windows; w++) {
299  for (b = 0; b < c->num_bands; b++) {
300  if (c->ms_info[band_off + b]) {
301  for (i = c->band_start[b]; i < c->band_start[b + 1]; i++) {
302  float l = *ch0, r = *ch1;
303  *ch0++ = l + r;
304  *ch1++ = l - r;
305  }
306  } else {
307  ch0 += c->band_start[b + 1] - c->band_start[b];
308  ch1 += c->band_start[b + 1] - c->band_start[b];
309  }
310  }
311  band_off += c->num_bands;
312  }
313  return 0;
314 }
315 
316 static void zero_head_and_tail(float *src, int len, int order0, int order1)
317 {
318  memset(src, 0, sizeof(*src) * order0);
319  memset(src + len - order1, 0, sizeof(*src) * order1);
320 }
321 
322 static void pretwiddle(float *src, float *dst, int dst_len, int tab_step,
323  int step, int order0, int order1, const double * const *tabs)
324 {
325  float *src2, *out;
326  const double *tab;
327  int i, j;
328 
329  out = dst;
330  tab = tabs[0];
331  for (i = 0; i < tab_step; i++) {
332  double sum = 0;
333  for (j = 0; j < order0; j++)
334  sum += src[j] * tab[j * tab_step + i];
335  out[i] += sum;
336  }
337 
338  out = dst + dst_len - tab_step;
339  tab = tabs[order0];
340  src2 = src + (dst_len - tab_step) / step + 1 + order0;
341  for (i = 0; i < tab_step; i++) {
342  double sum = 0;
343  for (j = 0; j < order1; j++)
344  sum += src2[j] * tab[j * tab_step + i];
345  out[i] += sum;
346  }
347 }
348 
349 static void twiddle(float *src1, float *src2, int src2_len,
350  const double *tab, int tab_len, int step,
351  int order0, int order1, const double * const *tabs)
352 {
353  int steps;
354  int mask;
355  int i, j;
356 
357  steps = (src2_len - tab_len) / step + 1;
358  pretwiddle(src1, src2, src2_len, tab_len, step, order0, order1, tabs);
359  mask = tab_len - 1;
360 
361  for (i = 0; i < steps; i++) {
362  float in0 = src1[order0 + i];
363  int pos = (src2_len - 1) & mask;
364 
365  if (pos < tab_len) {
366  const double *t = tab;
367  for (j = pos; j >= 0; j--)
368  src2[j] += in0 * *t++;
369  for (j = 0; j < tab_len - pos - 1; j++)
370  src2[src2_len - j - 1] += in0 * tab[pos + 1 + j];
371  } else {
372  for (j = 0; j < tab_len; j++)
373  src2[pos - j] += in0 * tab[j];
374  }
375  mask = pos + step;
376  }
377 }
378 
379 #define CMUL1_R(s, t, is, it) \
380  s[is + 0] * t[it + 0] - s[is + 1] * t[it + 1]
381 #define CMUL1_I(s, t, is, it) \
382  s[is + 0] * t[it + 1] + s[is + 1] * t[it + 0]
383 #define CMUL2_R(s, t, is, it) \
384  s[is + 0] * t[it + 0] + s[is + 1] * t[it + 1]
385 #define CMUL2_I(s, t, is, it) \
386  s[is + 0] * t[it + 1] - s[is + 1] * t[it + 0]
387 
388 #define CMUL0(dst, id, s0, s1, s2, s3, t0, t1, t2, t3, is, it) \
389  dst[id] = s0[is] * t0[it] + s1[is] * t1[it] \
390  + s2[is] * t2[it] + s3[is] * t3[it]; \
391  dst[id + 1] = s0[is] * t0[it + 1] + s1[is] * t1[it + 1] \
392  + s2[is] * t2[it + 1] + s3[is] * t3[it + 1];
393 
394 #define CMUL1(dst, s0, s1, s2, s3, t0, t1, t2, t3, is, it) \
395  *dst++ = CMUL1_R(s0, t0, is, it) \
396  + CMUL1_R(s1, t1, is, it) \
397  + CMUL1_R(s2, t2, is, it) \
398  + CMUL1_R(s3, t3, is, it); \
399  *dst++ = CMUL1_I(s0, t0, is, it) \
400  + CMUL1_I(s1, t1, is, it) \
401  + CMUL1_I(s2, t2, is, it) \
402  + CMUL1_I(s3, t3, is, it);
403 
404 #define CMUL2(dst, s0, s1, s2, s3, t0, t1, t2, t3, is, it) \
405  *dst++ = CMUL2_R(s0, t0, is, it) \
406  + CMUL2_R(s1, t1, is, it) \
407  + CMUL2_R(s2, t2, is, it) \
408  + CMUL2_R(s3, t3, is, it); \
409  *dst++ = CMUL2_I(s0, t0, is, it) \
410  + CMUL2_I(s1, t1, is, it) \
411  + CMUL2_I(s2, t2, is, it) \
412  + CMUL2_I(s3, t3, is, it);
413 
414 static void combine_fft(float *s0, float *s1, float *s2, float *s3, float *dst,
415  const float *t0, const float *t1,
416  const float *t2, const float *t3, int len, int step)
417 {
418  const float *h0, *h1, *h2, *h3;
419  float *d1, *d2;
420  int tmp, half;
421  int len2 = len >> 1, len4 = len >> 2;
422  int hoff;
423  int i, j, k;
424 
425  tmp = step;
426  for (half = len2; tmp > 1; half <<= 1, tmp >>= 1);
427 
428  h0 = t0 + half;
429  h1 = t1 + half;
430  h2 = t2 + half;
431  h3 = t3 + half;
432 
433  CMUL0(dst, 0, s0, s1, s2, s3, t0, t1, t2, t3, 0, 0);
434 
435  hoff = 2 * step * (len4 >> 1);
436 
437  j = 2;
438  k = 2 * step;
439  d1 = dst + 2;
440  d2 = dst + 2 + (len >> 1);
441  for (i = 0; i < (len4 - 1) >> 1; i++) {
442  CMUL1(d1, s0, s1, s2, s3, t0, t1, t2, t3, j, k);
443  CMUL1(d2, s0, s1, s2, s3, h0, h1, h2, h3, j, k);
444  j += 2;
445  k += 2 * step;
446  }
447  CMUL0(dst, len4, s0, s1, s2, s3, t0, t1, t2, t3, 1, hoff);
448  CMUL0(dst, len4 + len2, s0, s1, s2, s3, h0, h1, h2, h3, 1, hoff);
449 
450  j = len4;
451  k = hoff + 2 * step * len4;
452  d1 = dst + len4 + 2;
453  d2 = dst + len4 + 2 + len2;
454  for (i = 0; i < (len4 - 2) >> 1; i++) {
455  CMUL2(d1, s0, s1, s2, s3, t0, t1, t2, t3, j, k);
456  CMUL2(d2, s0, s1, s2, s3, h0, h1, h2, h3, j, k);
457  j -= 2;
458  k += 2 * step;
459  }
460  CMUL0(dst, len2 + 4, s0, s1, s2, s3, t0, t1, t2, t3, 0, k);
461 }
462 
463 static void wtf_end_512(On2AVCContext *c, float *out, float *src,
464  float *tmp0, float *tmp1)
465 {
466  memcpy(src, tmp0, 384 * sizeof(*tmp0));
467  memcpy(tmp0 + 384, src + 384, 128 * sizeof(*tmp0));
468 
469  zero_head_and_tail(src, 128, 16, 4);
470  zero_head_and_tail(src + 128, 128, 16, 4);
471  zero_head_and_tail(src + 256, 128, 13, 7);
472  zero_head_and_tail(src + 384, 128, 15, 5);
473 
474  c->fft128.fft_permute(&c->fft128, (FFTComplex*)src);
475  c->fft128.fft_permute(&c->fft128, (FFTComplex*)(src + 128));
476  c->fft128.fft_permute(&c->fft128, (FFTComplex*)(src + 256));
477  c->fft128.fft_permute(&c->fft128, (FFTComplex*)(src + 384));
478  c->fft128.fft_calc(&c->fft128, (FFTComplex*)src);
479  c->fft128.fft_calc(&c->fft128, (FFTComplex*)(src + 128));
480  c->fft128.fft_calc(&c->fft128, (FFTComplex*)(src + 256));
481  c->fft128.fft_calc(&c->fft128, (FFTComplex*)(src + 384));
482  combine_fft(src, src + 128, src + 256, src + 384, tmp1,
485  c->fft512.fft_permute(&c->fft512, (FFTComplex*)tmp1);
486  c->fft512.fft_calc(&c->fft512, (FFTComplex*)tmp1);
487 
488  pretwiddle(&tmp0[ 0], tmp1, 512, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
489  pretwiddle(&tmp0[128], tmp1, 512, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
490  pretwiddle(&tmp0[256], tmp1, 512, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
491  pretwiddle(&tmp0[384], tmp1, 512, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
492 
493  memcpy(src, tmp1, 512 * sizeof(float));
494 }
495 
496 static void wtf_end_1024(On2AVCContext *c, float *out, float *src,
497  float *tmp0, float *tmp1)
498 {
499  memcpy(src, tmp0, 768 * sizeof(*tmp0));
500  memcpy(tmp0 + 768, src + 768, 256 * sizeof(*tmp0));
501 
502  zero_head_and_tail(src, 256, 16, 4);
503  zero_head_and_tail(src + 256, 256, 16, 4);
504  zero_head_and_tail(src + 512, 256, 13, 7);
505  zero_head_and_tail(src + 768, 256, 15, 5);
506 
507  c->fft256.fft_permute(&c->fft256, (FFTComplex*)src);
508  c->fft256.fft_permute(&c->fft256, (FFTComplex*)(src + 256));
509  c->fft256.fft_permute(&c->fft256, (FFTComplex*)(src + 512));
510  c->fft256.fft_permute(&c->fft256, (FFTComplex*)(src + 768));
511  c->fft256.fft_calc(&c->fft256, (FFTComplex*)src);
512  c->fft256.fft_calc(&c->fft256, (FFTComplex*)(src + 256));
513  c->fft256.fft_calc(&c->fft256, (FFTComplex*)(src + 512));
514  c->fft256.fft_calc(&c->fft256, (FFTComplex*)(src + 768));
515  combine_fft(src, src + 256, src + 512, src + 768, tmp1,
518  c->fft1024.fft_permute(&c->fft1024, (FFTComplex*)tmp1);
519  c->fft1024.fft_calc(&c->fft1024, (FFTComplex*)tmp1);
520 
521  pretwiddle(&tmp0[ 0], tmp1, 1024, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
522  pretwiddle(&tmp0[256], tmp1, 1024, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
523  pretwiddle(&tmp0[512], tmp1, 1024, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
524  pretwiddle(&tmp0[768], tmp1, 1024, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
525 
526  memcpy(src, tmp1, 1024 * sizeof(float));
527 }
528 
529 static void wtf_40(On2AVCContext *c, float *out, float *src, int size)
530 {
531  float *tmp0 = c->temp, *tmp1 = c->temp + 1024;
532 
533  memset(tmp0, 0, sizeof(*tmp0) * 1024);
534  memset(tmp1, 0, sizeof(*tmp1) * 1024);
535 
536  if (size == 512) {
537  twiddle(src, &tmp0[ 0], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
538  twiddle(src + 8, &tmp0[ 0], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
539  twiddle(src + 16, &tmp0[ 16], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
540  twiddle(src + 24, &tmp0[ 16], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
541  twiddle(src + 32, &tmp0[ 32], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
542  twiddle(src + 40, &tmp0[ 32], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
543  twiddle(src + 48, &tmp0[ 48], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
544  twiddle(src + 56, &tmp0[ 48], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
545  twiddle(&tmp0[ 0], &tmp1[ 0], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
546  twiddle(&tmp0[16], &tmp1[ 0], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
547  twiddle(&tmp0[32], &tmp1[ 32], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
548  twiddle(&tmp0[48], &tmp1[ 32], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
549  twiddle(src + 64, &tmp1[ 64], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
550  twiddle(src + 80, &tmp1[ 64], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
551  twiddle(src + 96, &tmp1[ 96], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
552  twiddle(src + 112, &tmp1[ 96], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
553  twiddle(src + 128, &tmp1[128], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
554  twiddle(src + 144, &tmp1[128], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
555  twiddle(src + 160, &tmp1[160], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
556  twiddle(src + 176, &tmp1[160], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
557 
558  memset(tmp0, 0, 64 * sizeof(*tmp0));
559 
560  twiddle(&tmp1[ 0], &tmp0[ 0], 128, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
561  twiddle(&tmp1[ 32], &tmp0[ 0], 128, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
562  twiddle(&tmp1[ 64], &tmp0[ 0], 128, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
563  twiddle(&tmp1[ 96], &tmp0[ 0], 128, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
564  twiddle(&tmp1[128], &tmp0[128], 128, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
565  twiddle(&tmp1[160], &tmp0[128], 128, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
566  twiddle(src + 192, &tmp0[128], 128, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
567  twiddle(src + 224, &tmp0[128], 128, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
568  twiddle(src + 256, &tmp0[256], 128, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
569  twiddle(src + 288, &tmp0[256], 128, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
570  twiddle(src + 320, &tmp0[256], 128, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
571  twiddle(src + 352, &tmp0[256], 128, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
572 
573  wtf_end_512(c, out, src, tmp0, tmp1);
574  } else {
575  twiddle(src, &tmp0[ 0], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
576  twiddle(src + 16, &tmp0[ 0], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
577  twiddle(src + 32, &tmp0[ 32], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
578  twiddle(src + 48, &tmp0[ 32], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
579  twiddle(src + 64, &tmp0[ 64], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
580  twiddle(src + 80, &tmp0[ 64], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
581  twiddle(src + 96, &tmp0[ 96], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
582  twiddle(src + 112, &tmp0[ 96], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
583  twiddle(&tmp0[ 0], &tmp1[ 0], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
584  twiddle(&tmp0[32], &tmp1[ 0], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
585  twiddle(&tmp0[64], &tmp1[ 64], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
586  twiddle(&tmp0[96], &tmp1[ 64], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
587  twiddle(src + 128, &tmp1[128], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
588  twiddle(src + 160, &tmp1[128], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
589  twiddle(src + 192, &tmp1[192], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
590  twiddle(src + 224, &tmp1[192], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
591  twiddle(src + 256, &tmp1[256], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
592  twiddle(src + 288, &tmp1[256], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
593  twiddle(src + 320, &tmp1[320], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
594  twiddle(src + 352, &tmp1[320], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
595 
596  memset(tmp0, 0, 128 * sizeof(*tmp0));
597 
598  twiddle(&tmp1[ 0], &tmp0[ 0], 256, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
599  twiddle(&tmp1[ 64], &tmp0[ 0], 256, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
600  twiddle(&tmp1[128], &tmp0[ 0], 256, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
601  twiddle(&tmp1[192], &tmp0[ 0], 256, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
602  twiddle(&tmp1[256], &tmp0[256], 256, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
603  twiddle(&tmp1[320], &tmp0[256], 256, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
604  twiddle(src + 384, &tmp0[256], 256, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
605  twiddle(src + 448, &tmp0[256], 256, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
606  twiddle(src + 512, &tmp0[512], 256, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
607  twiddle(src + 576, &tmp0[512], 256, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
608  twiddle(src + 640, &tmp0[512], 256, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
609  twiddle(src + 704, &tmp0[512], 256, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
610 
611  wtf_end_1024(c, out, src, tmp0, tmp1);
612  }
613 }
614 
615 static void wtf_44(On2AVCContext *c, float *out, float *src, int size)
616 {
617  float *tmp0 = c->temp, *tmp1 = c->temp + 1024;
618 
619  memset(tmp0, 0, sizeof(*tmp0) * 1024);
620  memset(tmp1, 0, sizeof(*tmp1) * 1024);
621 
622  if (size == 512) {
623  twiddle(src, &tmp0[ 0], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
624  twiddle(src + 8, &tmp0[ 0], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
625  twiddle(src + 16, &tmp0[16], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
626  twiddle(src + 24, &tmp0[16], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
627  twiddle(src + 32, &tmp0[32], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
628  twiddle(src + 40, &tmp0[32], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
629  twiddle(src + 48, &tmp0[48], 16, ff_on2avc_tab_10_2, 10, 2, 3, 1, ff_on2avc_tabs_4_10_2);
630  twiddle(src + 56, &tmp0[48], 16, ff_on2avc_tab_10_1, 10, 2, 1, 3, ff_on2avc_tabs_4_10_1);
631  twiddle(&tmp0[ 0], &tmp1[ 0], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
632  twiddle(&tmp0[16], &tmp1[ 0], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
633  twiddle(&tmp0[32], &tmp1[32], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
634  twiddle(&tmp0[48], &tmp1[32], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
635  twiddle(src + 64, &tmp1[64], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
636  twiddle(src + 80, &tmp1[64], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
637  twiddle(src + 96, &tmp1[96], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
638  twiddle(src + 112, &tmp1[96], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
639 
640  memset(tmp0, 0, 64 * sizeof(*tmp0));
641 
642  twiddle(&tmp1[ 0], &tmp0[ 0], 128, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
643  twiddle(&tmp1[32], &tmp0[ 0], 128, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
644  twiddle(&tmp1[64], &tmp0[ 0], 128, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
645  twiddle(&tmp1[96], &tmp0[ 0], 128, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
646  twiddle(src + 128, &tmp0[128], 128, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
647  twiddle(src + 160, &tmp0[128], 128, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
648  twiddle(src + 192, &tmp0[128], 128, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
649  twiddle(src + 224, &tmp0[128], 128, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
650  twiddle(src + 256, &tmp0[256], 128, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
651  twiddle(src + 320, &tmp0[256], 128, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
652 
653  wtf_end_512(c, out, src, tmp0, tmp1);
654  } else {
655  twiddle(src, &tmp0[ 0], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
656  twiddle(src + 16, &tmp0[ 0], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
657  twiddle(src + 32, &tmp0[ 32], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
658  twiddle(src + 48, &tmp0[ 32], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
659  twiddle(src + 64, &tmp0[ 64], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
660  twiddle(src + 80, &tmp0[ 64], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
661  twiddle(src + 96, &tmp0[ 96], 32, ff_on2avc_tab_20_2, 20, 2, 4, 5, ff_on2avc_tabs_9_20_2);
662  twiddle(src + 112, &tmp0[ 96], 32, ff_on2avc_tab_20_1, 20, 2, 5, 4, ff_on2avc_tabs_9_20_1);
663  twiddle(&tmp0[ 0], &tmp1[ 0], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
664  twiddle(&tmp0[32], &tmp1[ 0], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
665  twiddle(&tmp0[64], &tmp1[ 64], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
666  twiddle(&tmp0[96], &tmp1[ 64], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
667  twiddle(src + 128, &tmp1[128], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
668  twiddle(src + 160, &tmp1[128], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
669  twiddle(src + 192, &tmp1[192], 64, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
670  twiddle(src + 224, &tmp1[192], 64, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
671 
672  memset(tmp0, 0, 128 * sizeof(*tmp0));
673 
674  twiddle(&tmp1[ 0], &tmp0[ 0], 256, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
675  twiddle(&tmp1[ 64], &tmp0[ 0], 256, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
676  twiddle(&tmp1[128], &tmp0[ 0], 256, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
677  twiddle(&tmp1[192], &tmp0[ 0], 256, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
678  twiddle(src + 256, &tmp0[256], 256, ff_on2avc_tab_84_4, 84, 4, 15, 5, ff_on2avc_tabs_20_84_4);
679  twiddle(src + 320, &tmp0[256], 256, ff_on2avc_tab_84_3, 84, 4, 13, 7, ff_on2avc_tabs_20_84_3);
680  twiddle(src + 384, &tmp0[256], 256, ff_on2avc_tab_84_2, 84, 4, 16, 4, ff_on2avc_tabs_20_84_2);
681  twiddle(src + 448, &tmp0[256], 256, ff_on2avc_tab_84_1, 84, 4, 16, 4, ff_on2avc_tabs_20_84_1);
682  twiddle(src + 512, &tmp0[512], 256, ff_on2avc_tab_40_1, 40, 2, 11, 8, ff_on2avc_tabs_19_40_1);
683  twiddle(src + 640, &tmp0[512], 256, ff_on2avc_tab_40_2, 40, 2, 8, 11, ff_on2avc_tabs_19_40_2);
684 
685  wtf_end_1024(c, out, src, tmp0, tmp1);
686  }
687 }
688 
690 {
691  int ch, i;
692 
693  for (ch = 0; ch < 2; ch++) {
694  float *out = (float*)dst->extended_data[ch] + offset;
695  float *in = c->coeffs[ch];
696  float *saved = c->delay[ch];
697  float *buf = c->mdct_buf;
698  float *wout = out + 448;
699 
700  switch (c->window_type) {
701  case WINDOW_TYPE_EXT7:
702  c->mdct.imdct_half(&c->mdct, buf, in);
703  break;
704  case WINDOW_TYPE_EXT4:
705  c->wtf(c, buf, in, 1024);
706  break;
707  case WINDOW_TYPE_EXT5:
708  c->wtf(c, buf, in, 512);
709  c->mdct.imdct_half(&c->mdct_half, buf + 512, in + 512);
710  for (i = 0; i < 256; i++) {
711  FFSWAP(float, buf[i + 512], buf[1023 - i]);
712  }
713  break;
714  case WINDOW_TYPE_EXT6:
715  c->mdct.imdct_half(&c->mdct_half, buf, in);
716  for (i = 0; i < 256; i++) {
717  FFSWAP(float, buf[i], buf[511 - i]);
718  }
719  c->wtf(c, buf + 512, in + 512, 512);
720  break;
721  }
722 
723  memcpy(out, saved, 448 * sizeof(float));
724  c->fdsp->vector_fmul_window(wout, saved + 448, buf, c->short_win, 64);
725  memcpy(wout + 128, buf + 64, 448 * sizeof(float));
726  memcpy(saved, buf + 512, 448 * sizeof(float));
727  memcpy(saved + 448, buf + 7*128 + 64, 64 * sizeof(float));
728  }
729 
730  return 0;
731 }
732 
733 // not borrowed from aacdec.c - the codec has original design after all
734 static int on2avc_reconstruct_channel(On2AVCContext *c, int channel,
735  AVFrame *dst, int offset)
736 {
737  int i;
738  float *out = (float*)dst->extended_data[channel] + offset;
739  float *in = c->coeffs[channel];
740  float *saved = c->delay[channel];
741  float *buf = c->mdct_buf;
742  float *temp = c->temp;
743 
744  switch (c->window_type) {
747  case WINDOW_TYPE_LONG:
748  c->mdct.imdct_half(&c->mdct, buf, in);
749  break;
750  case WINDOW_TYPE_8SHORT:
751  for (i = 0; i < ON2AVC_SUBFRAME_SIZE; i += ON2AVC_SUBFRAME_SIZE / 8)
752  c->mdct_small.imdct_half(&c->mdct_small, buf + i, in + i);
753  break;
754  }
755 
756  if ((c->prev_window_type == WINDOW_TYPE_LONG ||
758  (c->window_type == WINDOW_TYPE_LONG ||
760  c->fdsp->vector_fmul_window(out, saved, buf, c->long_win, 512);
761  } else {
762  float *wout = out + 448;
763  memcpy(out, saved, 448 * sizeof(float));
764 
765  if (c->window_type == WINDOW_TYPE_8SHORT) {
766  c->fdsp->vector_fmul_window(wout + 0*128, saved + 448, buf + 0*128, c->short_win, 64);
767  c->fdsp->vector_fmul_window(wout + 1*128, buf + 0*128 + 64, buf + 1*128, c->short_win, 64);
768  c->fdsp->vector_fmul_window(wout + 2*128, buf + 1*128 + 64, buf + 2*128, c->short_win, 64);
769  c->fdsp->vector_fmul_window(wout + 3*128, buf + 2*128 + 64, buf + 3*128, c->short_win, 64);
770  c->fdsp->vector_fmul_window(temp, buf + 3*128 + 64, buf + 4*128, c->short_win, 64);
771  memcpy(wout + 4*128, temp, 64 * sizeof(float));
772  } else {
773  c->fdsp->vector_fmul_window(wout, saved + 448, buf, c->short_win, 64);
774  memcpy(wout + 128, buf + 64, 448 * sizeof(float));
775  }
776  }
777 
778  // buffer update
779  switch (c->window_type) {
780  case WINDOW_TYPE_8SHORT:
781  memcpy(saved, temp + 64, 64 * sizeof(float));
782  c->fdsp->vector_fmul_window(saved + 64, buf + 4*128 + 64, buf + 5*128, c->short_win, 64);
783  c->fdsp->vector_fmul_window(saved + 192, buf + 5*128 + 64, buf + 6*128, c->short_win, 64);
784  c->fdsp->vector_fmul_window(saved + 320, buf + 6*128 + 64, buf + 7*128, c->short_win, 64);
785  memcpy(saved + 448, buf + 7*128 + 64, 64 * sizeof(float));
786  break;
788  memcpy(saved, buf + 512, 448 * sizeof(float));
789  memcpy(saved + 448, buf + 7*128 + 64, 64 * sizeof(float));
790  break;
792  case WINDOW_TYPE_LONG:
793  memcpy(saved, buf + 512, 512 * sizeof(float));
794  break;
795  }
796  return 0;
797 }
798 
800  int buf_size, AVFrame *dst, int offset)
801 {
802  GetBitContext gb;
803  int i, ret;
804 
805  if ((ret = init_get_bits8(&gb, buf, buf_size)) < 0)
806  return ret;
807 
808  if (get_bits1(&gb)) {
809  av_log(c->avctx, AV_LOG_ERROR, "enh bit set\n");
810  return AVERROR_INVALIDDATA;
811  }
813  c->window_type = get_bits(&gb, 3);
814  if (c->window_type >= WINDOW_TYPE_EXT4 && c->avctx->channels == 1) {
815  av_log(c->avctx, AV_LOG_ERROR, "stereo mode window for mono audio\n");
816  return AVERROR_INVALIDDATA;
817  }
818 
821  c->num_bands = c->modes[c->window_type].num_bands;
823 
824  c->grouping[0] = 1;
825  for (i = 1; i < c->num_windows; i++)
826  c->grouping[i] = !get_bits1(&gb);
827 
828  on2avc_read_ms_info(c, &gb);
829  for (i = 0; i < c->avctx->channels; i++)
830  if ((ret = on2avc_read_channel_data(c, &gb, i)) < 0)
831  return AVERROR_INVALIDDATA;
832  if (c->avctx->channels == 2 && c->ms_present)
833  on2avc_apply_ms(c);
834  if (c->window_type < WINDOW_TYPE_EXT4) {
835  for (i = 0; i < c->avctx->channels; i++)
836  on2avc_reconstruct_channel(c, i, dst, offset);
837  } else {
838  on2avc_reconstruct_stereo(c, dst, offset);
839  }
840 
841  return 0;
842 }
843 
845  int *got_frame_ptr, AVPacket *avpkt)
846 {
847  AVFrame *frame = data;
848  const uint8_t *buf = avpkt->data;
849  int buf_size = avpkt->size;
850  On2AVCContext *c = avctx->priv_data;
851  GetByteContext gb;
852  int num_frames = 0, frame_size, audio_off;
853  int ret;
854 
855  if (c->is_av500) {
856  /* get output buffer */
858  if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
859  return ret;
860 
861  if ((ret = on2avc_decode_subframe(c, buf, buf_size, frame, 0)) < 0)
862  return ret;
863  } else {
864  bytestream2_init(&gb, buf, buf_size);
865  while (bytestream2_get_bytes_left(&gb) > 2) {
866  frame_size = bytestream2_get_le16(&gb);
868  av_log(avctx, AV_LOG_ERROR, "Invalid subframe size %d\n",
869  frame_size);
870  return AVERROR_INVALIDDATA;
871  }
872  num_frames++;
874  }
875  if (!num_frames) {
876  av_log(avctx, AV_LOG_ERROR, "No subframes present\n");
877  return AVERROR_INVALIDDATA;
878  }
879 
880  /* get output buffer */
881  frame->nb_samples = ON2AVC_SUBFRAME_SIZE * num_frames;
882  if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
883  return ret;
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  if (avctx->channels > 2U) {
917  avpriv_request_sample(avctx, "Decoding more than 2 channels");
918  return AVERROR_PATCHWELCOME;
919  }
920 
921  c->avctx = avctx;
923  avctx->channel_layout = (avctx->channels == 2) ? AV_CH_LAYOUT_STEREO
925 
926  c->is_av500 = (avctx->codec_tag == 0x500);
927  if (c->is_av500 && avctx->channels == 2) {
928  av_log(avctx, AV_LOG_ERROR, "0x500 version should be mono\n");
929  return AVERROR_INVALIDDATA;
930  }
931 
932  if (avctx->channels == 2)
933  av_log(avctx, AV_LOG_WARNING,
934  "Stereo mode support is not good, patch is welcome\n");
935 
936  for (i = 0; i < 20; i++)
937  c->scale_tab[i] = ceil(pow(10.0, i * 0.1) * 16) / 32;
938  for (; i < 128; i++)
939  c->scale_tab[i] = ceil(pow(10.0, i * 0.1) * 0.5);
940 
941  if (avctx->sample_rate < 32000 || avctx->channels == 1)
943  1024 * sizeof(*c->long_win));
944  else
946  1024 * sizeof(*c->long_win));
947  memcpy(c->short_win, ff_on2avc_window_short, 128 * sizeof(*c->short_win));
948 
949  c->modes = (avctx->sample_rate <= 40000) ? ff_on2avc_modes_40
951  c->wtf = (avctx->sample_rate <= 40000) ? wtf_40
952  : wtf_44;
953 
954  ff_mdct_init(&c->mdct, 11, 1, 1.0 / (32768.0 * 1024.0));
955  ff_mdct_init(&c->mdct_half, 10, 1, 1.0 / (32768.0 * 512.0));
956  ff_mdct_init(&c->mdct_small, 8, 1, 1.0 / (32768.0 * 128.0));
957  ff_fft_init(&c->fft128, 6, 0);
958  ff_fft_init(&c->fft256, 7, 0);
959  ff_fft_init(&c->fft512, 8, 1);
960  ff_fft_init(&c->fft1024, 9, 1);
962  if (!c->fdsp)
963  return AVERROR(ENOMEM);
964 
967  ff_on2avc_scale_diff_codes, 4, 4, 0)) {
968  goto vlc_fail;
969  }
970  for (i = 1; i < 9; i++) {
971  int idx = i - 1;
973  ff_on2avc_quad_cb_bits[idx], 1, 1,
974  ff_on2avc_quad_cb_codes[idx], 4, 4,
975  ff_on2avc_quad_cb_syms[idx], 2, 2, 0)) {
976  goto vlc_fail;
977  }
978  }
979  for (i = 9; i < 16; i++) {
980  int idx = i - 9;
982  ff_on2avc_pair_cb_bits[idx], 1, 1,
983  ff_on2avc_pair_cb_codes[idx], 2, 2,
984  ff_on2avc_pair_cb_syms[idx], 2, 2, 0)) {
985  goto vlc_fail;
986  }
987  }
988 
989  return 0;
990 vlc_fail:
991  av_log(avctx, AV_LOG_ERROR, "Cannot init VLC\n");
992  on2avc_free_vlcs(c);
993  av_freep(&c->fdsp);
994  return AVERROR(ENOMEM);
995 }
996 
998 {
999  On2AVCContext *c = avctx->priv_data;
1000 
1001  ff_mdct_end(&c->mdct);
1002  ff_mdct_end(&c->mdct_half);
1003  ff_mdct_end(&c->mdct_small);
1004  ff_fft_end(&c->fft128);
1005  ff_fft_end(&c->fft256);
1006  ff_fft_end(&c->fft512);
1007  ff_fft_end(&c->fft1024);
1008 
1009  av_freep(&c->fdsp);
1010 
1011  on2avc_free_vlcs(c);
1012 
1013  return 0;
1014 }
1015 
1016 
1018  .name = "on2avc",
1019  .long_name = NULL_IF_CONFIG_SMALL("On2 Audio for Video Codec"),
1020  .type = AVMEDIA_TYPE_AUDIO,
1021  .id = AV_CODEC_ID_ON2AVC,
1022  .priv_data_size = sizeof(On2AVCContext),
1025  .close = on2avc_decode_close,
1026  .capabilities = AV_CODEC_CAP_DR1,
1027  .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
1029 };
float, planar
Definition: samplefmt.h:70
#define NULL
Definition: coverity.c:32
const double *const ff_on2avc_tabs_4_10_1[4]
Definition: on2avcdata.c:7644
const char const char void * val
Definition: avisynth_c.h:634
void(* wtf)(struct On2AVCContext *ctx, float *out, float *in, int size)
Definition: on2avc.c:53
float v
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static int on2avc_read_channel_data(On2AVCContext *c, GetBitContext *gb, int ch)
Definition: on2avc.c:254
const double ff_on2avc_tab_20_1[]
Definition: on2avcdata.c:7454
This structure describes decoded (raw) audio or video data.
Definition: frame.h:171
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
const uint8_t *const ff_on2avc_pair_cb_bits[]
Definition: on2avcdata.c:6873
float coeffs[2][ON2AVC_SUBFRAME_SIZE]
Definition: on2avc.c:80
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:261
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
float scale_tab[128]
Definition: on2avc.c:78
else temp
Definition: vf_mcdeint.c:257
float delay[2][ON2AVC_SUBFRAME_SIZE]
Definition: on2avc.c:81
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
const On2AVCMode ff_on2avc_modes_40[8]
Definition: on2avcdata.c:91
int ff_init_vlc_sparse(VLC *vlc_arg, 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:274
int size
Definition: avcodec.h:1434
static void on2avc_read_ms_info(On2AVCContext *c, GetBitContext *gb)
Definition: on2avc.c:89
const char * b
Definition: vf_curves.c:109
#define CMUL0(dst, id, s0, s1, s2, s3, t0, t1, t2, t3, is, it)
Definition: on2avc.c:388
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:53
void(* fft_permute)(struct FFTContext *s, FFTComplex *z)
Do the permutation needed BEFORE calling fft_calc().
Definition: fft.h:101
AVCodecContext * avctx
Definition: on2avc.c:49
const double ff_on2avc_tab_84_4[]
Definition: on2avcdata.c:7594
int num_sections
Definition: on2avc.c:71
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
Definition: bytestream.h:133
const int ff_on2avc_quad_cb_elems[]
Definition: on2avcdata.c:6863
int num_windows
Definition: on2avcdata.h:32
uint8_t run
Definition: svq3.c:149
#define AV_CH_LAYOUT_STEREO
AVCodec.
Definition: avcodec.h:3482
float mdct_buf[ON2AVC_SUBFRAME_SIZE]
Definition: on2avc.c:84
static int on2avc_apply_ms(On2AVCContext *c)
Definition: on2avc.c:291
static float on2avc_scale(int v, float scale)
Definition: on2avc.c:187
static int on2avc_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
Definition: on2avc.c:844
static const uint8_t run_len[7][16]
Definition: h264_cavlc.c:219
const uint16_t *const ff_on2avc_pair_cb_codes[]
Definition: on2avcdata.c:6868
int num_bands
Definition: on2avc.c:59
const float ff_on2avc_window_short[128]
Definition: on2avcdata.c:7406
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
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
uint8_t band_type[ON2AVC_MAX_BANDS]
Definition: on2avc.c:69
enum AVSampleFormat sample_fmt
audio sample format
Definition: avcodec.h:2280
uint8_t
#define av_cold
Definition: attributes.h:74
const On2AVCMode * modes
Definition: on2avc.c:57
static void wtf_end_1024(On2AVCContext *c, float *out, float *src, float *tmp0, float *tmp1)
Definition: on2avc.c:496
static av_cold int on2avc_decode_init(AVCodecContext *avctx)
Definition: on2avc.c:911
const double ff_on2avc_tab_84_1[]
Definition: on2avcdata.c:7501
#define t0
Definition: regdef.h:28
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:689
static AVFrame * frame
uint8_t * data
Definition: avcodec.h:1433
const uint8_t * buffer
Definition: bytestream.h:34
static int on2avc_decode_band_types(On2AVCContext *c, GetBitContext *gb)
Definition: on2avc.c:110
const double *const ff_on2avc_tabs_20_84_1[20]
Definition: on2avcdata.c:8829
bitstream reader API header.
int window_type
Definition: on2avc.c:58
static void wtf_40(On2AVCContext *c, float *out, float *src, int size)
Definition: on2avc.c:529
const uint32_t *const ff_on2avc_quad_cb_codes[]
Definition: on2avcdata.c:6848
ptrdiff_t size
Definition: opengl_enc.c:101
uint8_t band_run_end[ON2AVC_MAX_BANDS]
Definition: on2avc.c:70
const uint32_t ff_on2avc_scale_diff_codes[ON2AVC_SCALE_DIFFS]
Definition: on2avcdata.c:113
#define av_log(a,...)
const double ff_on2avc_tab_84_2[]
Definition: on2avcdata.c:7532
const double ff_on2avc_tab_40_2[]
Definition: on2avcdata.c:7484
static int on2avc_decode_subframe(On2AVCContext *c, const uint8_t *buf, int buf_size, AVFrame *dst, int offset)
Definition: on2avc.c:799
#define U(x)
Definition: vp56_arith.h:37
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define s2
Definition: regdef.h:39
static const uint16_t mask[17]
Definition: lzw.c:38
const double *const ff_on2avc_tabs_9_20_2[9]
Definition: on2avcdata.c:7732
int is_av500
Definition: on2avc.c:55
#define AVERROR(e)
Definition: error.h:43
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
Definition: bytestream.h:164
#define CMUL1(dst, s0, s1, s2, s3, t0, t1, t2, t3, is, it)
Definition: on2avc.c:394
#define CMUL2(dst, s0, s1, s2, s3, t0, t1, t2, t3, is, it)
Definition: on2avc.c:404
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:178
const char * r
Definition: vf_curves.c:107
#define s0
Definition: regdef.h:37
#define t1
Definition: regdef.h:29
static av_always_inline unsigned int bytestream2_get_bytes_left(GetByteContext *g)
Definition: bytestream.h:154
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1607
const char * name
Name of the codec implementation.
Definition: avcodec.h:3489
#define ff_mdct_init
Definition: fft.h:167
#define t3
Definition: regdef.h:31
const double ff_on2avc_tab_20_2[]
Definition: on2avcdata.c:7461
const uint16_t *const ff_on2avc_pair_cb_syms[]
Definition: on2avcdata.c:6878
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
int bits_per_section
Definition: on2avc.c:60
Libavcodec external API header.
const double ff_on2avc_tab_40_1[]
Definition: on2avcdata.c:7471
Definition: get_bits.h:64
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:2333
static int get_egolomb(GetBitContext *gb)
Definition: on2avc.c:210
const double *const ff_on2avc_tabs_9_20_1[9]
Definition: on2avcdata.c:7727
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:88
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:734
static void wtf_end_512(On2AVCContext *c, float *out, float *src, float *tmp0, float *tmp1)
Definition: on2avc.c:463
int ms_info[ON2AVC_MAX_BANDS]
Definition: on2avc.c:65
float short_win[ON2AVC_SUBFRAME_SIZE/8]
Definition: on2avc.c:86
VLC scale_diff
Definition: on2avc.c:75
#define ff_fft_init
Definition: fft.h:147
static void twiddle(float *src1, float *src2, int src2_len, const double *tab, int tab_len, int step, int order0, int order1, const double *const *tabs)
Definition: on2avc.c:349
static void pretwiddle(float *src, float *dst, int dst_len, int tab_step, int step, int order0, int order1, const double *const *tabs)
Definition: on2avc.c:322
#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:561
WindowTypes
Definition: on2avc.c:37
const On2AVCMode ff_on2avc_modes_44[8]
Definition: on2avcdata.c:102
FFTContext mdct
Definition: on2avc.c:51
#define s3
Definition: regdef.h:40
int grouping[8]
Definition: on2avc.c:63
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
float long_win[ON2AVC_SUBFRAME_SIZE]
Definition: on2avc.c:85
#define ON2AVC_SUBFRAME_SIZE
Definition: on2avc.c:35
const double *const ff_on2avc_tabs_4_10_2[4]
Definition: on2avcdata.c:7648
const uint8_t *const ff_on2avc_quad_cb_bits[]
Definition: on2avcdata.c:6853
const uint8_t ff_on2avc_scale_diff_bits[ON2AVC_SCALE_DIFFS]
Definition: on2avcdata.c:137
#define src1
Definition: h264pred.c:139
int frame_size
Definition: mxfenc.c:1819
AVS_Value src
Definition: avisynth_c.h:482
static int on2avc_decode_quads(On2AVCContext *c, GetBitContext *gb, float *dst, int dst_size, int type, float band_scale)
Definition: on2avc.c:193
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:59
int sample_rate
samples per second
Definition: avcodec.h:2272
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:446
int ms_present
Definition: on2avc.c:64
int num_windows
Definition: on2avc.c:59
main external API structure.
Definition: avcodec.h:1512
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:1048
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:1544
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;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);returnNULL;}returnac;}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;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->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);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
#define init_vlc(vlc, nb_bits, nb_codes,bits, bits_wrap, bits_size,codes, codes_wrap, codes_size,flags)
Definition: get_bits.h:462
const float ff_on2avc_ctab_2[2048]
Definition: on2avcdata.c:8992
void * buf
Definition: avisynth_c.h:553
FFTContext fft128
Definition: on2avc.c:52
void(* imdct_half)(struct FFTContext *s, FFTSample *output, const FFTSample *input)
Definition: fft.h:108
GLint GLenum type
Definition: opengl_enc.c:105
VLC cb_vlc[16]
Definition: on2avc.c:76
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:305
AVCodec ff_on2avc_decoder
Definition: on2avc.c:1017
const double ff_on2avc_tab_10_2[]
Definition: on2avcdata.c:7446
int num_bands
Definition: on2avcdata.h:33
#define s1
Definition: regdef.h:38
av_cold AVFloatDSPContext * avpriv_float_dsp_alloc(int bit_exact)
Allocate a float DSP context.
Definition: float_dsp.c:143
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
Definition: get_bits.h:338
const double *const ff_on2avc_tabs_20_84_4[20]
Definition: on2avcdata.c:8853
static av_const int sign_extend(int val, unsigned bits)
Definition: mathops.h:138
static const struct @73 tabs[]
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:521
const float ff_on2avc_ctab_4[2048]
Definition: on2avcdata.c:9254
const int * band_start
Definition: on2avc.c:61
AVFloatDSPContext * fdsp
Definition: on2avc.c:50
common internal api header.
static av_cold int on2avc_decode_close(AVCodecContext *avctx)
Definition: on2avc.c:997
#define ON2AVC_MAX_BANDS
Definition: on2avcdata.h:28
#define ff_mdct_end
Definition: fft.h:168
static double c[64]
const double *const ff_on2avc_tabs_20_84_2[20]
Definition: on2avcdata.c:8837
FFTContext fft256
Definition: on2avc.c:52
#define ff_fft_end
Definition: fft.h:148
void(* fft_calc)(struct FFTContext *s, FFTComplex *z)
Do a complex FFT with the parameters defined in ff_fft_init().
Definition: fft.h:106
FFTContext mdct_half
Definition: on2avc.c:51
void * priv_data
Definition: avcodec.h:1554
static void zero_head_and_tail(float *src, int len, int order0, int order1)
Definition: on2avc.c:316
int prev_window_type
Definition: on2avc.c:58
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:51
FFTContext fft1024
Definition: on2avc.c:52
float temp[ON2AVC_SUBFRAME_SIZE *2]
Definition: on2avc.c:83
int is_long
Definition: on2avc.c:67
int len
int channels
number of audio channels
Definition: avcodec.h:2273
VLC_TYPE(* table)[2]
code, bits
Definition: get_bits.h:66
static int on2avc_decode_pairs(On2AVCContext *c, GetBitContext *gb, float *dst, int dst_size, int type, float band_scale)
Definition: on2avc.c:226
const float ff_on2avc_window_long_32000[1024]
Definition: on2avcdata.c:6888
const double *const ff_on2avc_tabs_19_40_1[19]
Definition: on2avcdata.c:7930
static const struct twinvq_data tab
const double *const ff_on2avc_tabs_19_40_2[19]
Definition: on2avcdata.c:7938
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;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);returnNULL;}returnac;}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;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->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);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> out
const double *const ff_on2avc_tabs_20_84_3[20]
Definition: on2avcdata.c:8845
static int on2avc_decode_band_scales(On2AVCContext *c, GetBitContext *gb)
Definition: on2avc.c:140
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:701
const float ff_on2avc_ctab_3[2048]
Definition: on2avcdata.c:9123
#define av_freep(p)
static void wtf_44(On2AVCContext *c, float *out, float *src, int size)
Definition: on2avc.c:615
#define ON2AVC_SCALE_DIFFS
Definition: on2avcdata.h:40
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:414
#define FFSWAP(type, a, b)
Definition: common.h:95
uint8_t ** extended_data
pointers to the data planes/channels.
Definition: frame.h:215
#define AV_CH_LAYOUT_MONO
exp golomb vlc stuff
This structure stores compressed data.
Definition: avcodec.h:1410
void ff_free_vlc(VLC *vlc)
Definition: bitstream.c:359
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:225
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:857
float band_scales[ON2AVC_MAX_BANDS]
Definition: on2avc.c:73
#define t2
Definition: regdef.h:30
FFTContext fft512
Definition: on2avc.c:52
const double ff_on2avc_tab_10_1[]
Definition: on2avcdata.c:7441