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wavpack.c
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1 /*
2  * WavPack lossless audio decoder
3  * Copyright (c) 2006,2011 Konstantin Shishkov
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
23 
24 #define BITSTREAM_READER_LE
25 #include "avcodec.h"
26 #include "bytestream.h"
27 #include "get_bits.h"
28 #include "internal.h"
29 #include "thread.h"
30 #include "unary.h"
31 #include "wavpack.h"
32 
33 /**
34  * @file
35  * WavPack lossless audio decoder
36  */
37 
38 typedef struct SavedContext {
39  int offset;
40  int size;
41  int bits_used;
42  uint32_t crc;
43 } SavedContext;
44 
45 typedef struct WavpackFrameContext {
49  int joint;
50  uint32_t CRC;
53  uint32_t crc_extra_bits;
55  int data_size; // in bits
56  int samples;
57  int terms;
59  int zero, one, zeroes;
61  int and, or, shift;
69  int pos;
72 
73 #define WV_MAX_FRAME_DECODERS 14
74 
75 typedef struct WavpackContext {
77 
79  int fdec_num;
80 
81  int block;
82  int samples;
83  int ch_offset;
85 
86 #define LEVEL_DECAY(a) (((a) + 0x80) >> 8)
87 
88 static av_always_inline int get_tail(GetBitContext *gb, int k)
89 {
90  int p, e, res;
91 
92  if (k < 1)
93  return 0;
94  p = av_log2(k);
95  e = (1 << (p + 1)) - k - 1;
96  res = get_bitsz(gb, p);
97  if (res >= e)
98  res = (res << 1) - e + get_bits1(gb);
99  return res;
100 }
101 
103 {
104  int i, br[2], sl[2];
105 
106  for (i = 0; i <= ctx->stereo_in; i++) {
107  if (ctx->ch[i].bitrate_acc > UINT_MAX - ctx->ch[i].bitrate_delta)
108  return AVERROR_INVALIDDATA;
109  ctx->ch[i].bitrate_acc += ctx->ch[i].bitrate_delta;
110  br[i] = ctx->ch[i].bitrate_acc >> 16;
111  sl[i] = LEVEL_DECAY(ctx->ch[i].slow_level);
112  }
113  if (ctx->stereo_in && ctx->hybrid_bitrate) {
114  int balance = (sl[1] - sl[0] + br[1] + 1) >> 1;
115  if (balance > br[0]) {
116  br[1] = br[0] * 2;
117  br[0] = 0;
118  } else if (-balance > br[0]) {
119  br[0] *= 2;
120  br[1] = 0;
121  } else {
122  br[1] = br[0] + balance;
123  br[0] = br[0] - balance;
124  }
125  }
126  for (i = 0; i <= ctx->stereo_in; i++) {
127  if (ctx->hybrid_bitrate) {
128  if (sl[i] - br[i] > -0x100)
129  ctx->ch[i].error_limit = wp_exp2(sl[i] - br[i] + 0x100);
130  else
131  ctx->ch[i].error_limit = 0;
132  } else {
133  ctx->ch[i].error_limit = wp_exp2(br[i]);
134  }
135  }
136 
137  return 0;
138 }
139 
141  int channel, int *last)
142 {
143  int t, t2;
144  int sign, base, add, ret;
145  WvChannel *c = &ctx->ch[channel];
146 
147  *last = 0;
148 
149  if ((ctx->ch[0].median[0] < 2U) && (ctx->ch[1].median[0] < 2U) &&
150  !ctx->zero && !ctx->one) {
151  if (ctx->zeroes) {
152  ctx->zeroes--;
153  if (ctx->zeroes) {
155  return 0;
156  }
157  } else {
158  t = get_unary_0_33(gb);
159  if (t >= 2) {
160  if (t >= 32 || get_bits_left(gb) < t - 1)
161  goto error;
162  t = get_bits_long(gb, t - 1) | (1 << (t - 1));
163  } else {
164  if (get_bits_left(gb) < 0)
165  goto error;
166  }
167  ctx->zeroes = t;
168  if (ctx->zeroes) {
169  memset(ctx->ch[0].median, 0, sizeof(ctx->ch[0].median));
170  memset(ctx->ch[1].median, 0, sizeof(ctx->ch[1].median));
172  return 0;
173  }
174  }
175  }
176 
177  if (ctx->zero) {
178  t = 0;
179  ctx->zero = 0;
180  } else {
181  t = get_unary_0_33(gb);
182  if (get_bits_left(gb) < 0)
183  goto error;
184  if (t == 16) {
185  t2 = get_unary_0_33(gb);
186  if (t2 < 2) {
187  if (get_bits_left(gb) < 0)
188  goto error;
189  t += t2;
190  } else {
191  if (t2 >= 32 || get_bits_left(gb) < t2 - 1)
192  goto error;
193  t += get_bits_long(gb, t2 - 1) | (1 << (t2 - 1));
194  }
195  }
196 
197  if (ctx->one) {
198  ctx->one = t & 1;
199  t = (t >> 1) + 1;
200  } else {
201  ctx->one = t & 1;
202  t >>= 1;
203  }
204  ctx->zero = !ctx->one;
205  }
206 
207  if (ctx->hybrid && !channel) {
208  if (update_error_limit(ctx) < 0)
209  goto error;
210  }
211 
212  if (!t) {
213  base = 0;
214  add = GET_MED(0) - 1;
215  DEC_MED(0);
216  } else if (t == 1) {
217  base = GET_MED(0);
218  add = GET_MED(1) - 1;
219  INC_MED(0);
220  DEC_MED(1);
221  } else if (t == 2) {
222  base = GET_MED(0) + GET_MED(1);
223  add = GET_MED(2) - 1;
224  INC_MED(0);
225  INC_MED(1);
226  DEC_MED(2);
227  } else {
228  base = GET_MED(0) + GET_MED(1) + GET_MED(2) * (t - 2U);
229  add = GET_MED(2) - 1;
230  INC_MED(0);
231  INC_MED(1);
232  INC_MED(2);
233  }
234  if (!c->error_limit) {
235  if (add >= 0x2000000U) {
236  av_log(ctx->avctx, AV_LOG_ERROR, "k %d is too large\n", add);
237  goto error;
238  }
239  ret = base + get_tail(gb, add);
240  if (get_bits_left(gb) <= 0)
241  goto error;
242  } else {
243  int mid = (base * 2U + add + 1) >> 1;
244  while (add > c->error_limit) {
245  if (get_bits_left(gb) <= 0)
246  goto error;
247  if (get_bits1(gb)) {
248  add -= (mid - (unsigned)base);
249  base = mid;
250  } else
251  add = mid - (unsigned)base - 1;
252  mid = (base * 2U + add + 1) >> 1;
253  }
254  ret = mid;
255  }
256  sign = get_bits1(gb);
257  if (ctx->hybrid_bitrate)
258  c->slow_level += wp_log2(ret) - LEVEL_DECAY(c->slow_level);
259  return sign ? ~ret : ret;
260 
261 error:
262  ret = get_bits_left(gb);
263  if (ret <= 0) {
264  av_log(ctx->avctx, AV_LOG_ERROR, "Too few bits (%d) left\n", ret);
265  }
266  *last = 1;
267  return 0;
268 }
269 
270 static inline int wv_get_value_integer(WavpackFrameContext *s, uint32_t *crc,
271  unsigned S)
272 {
273  unsigned bit;
274 
275  if (s->extra_bits) {
276  S *= 1 << s->extra_bits;
277 
278  if (s->got_extra_bits &&
280  S |= get_bits_long(&s->gb_extra_bits, s->extra_bits);
281  *crc = *crc * 9 + (S & 0xffff) * 3 + ((unsigned)S >> 16);
282  }
283  }
284 
285  bit = (S & s->and) | s->or;
286  bit = ((S + bit) << s->shift) - bit;
287 
288  if (s->hybrid)
289  bit = av_clip(bit, s->hybrid_minclip, s->hybrid_maxclip);
290 
291  return bit << s->post_shift;
292 }
293 
294 static float wv_get_value_float(WavpackFrameContext *s, uint32_t *crc, int S)
295 {
296  union {
297  float f;
298  uint32_t u;
299  } value;
300 
301  unsigned int sign;
302  int exp = s->float_max_exp;
303 
304  if (s->got_extra_bits) {
305  const int max_bits = 1 + 23 + 8 + 1;
306  const int left_bits = get_bits_left(&s->gb_extra_bits);
307 
308  if (left_bits + 8 * AV_INPUT_BUFFER_PADDING_SIZE < max_bits)
309  return 0.0;
310  }
311 
312  if (S) {
313  S *= 1U << s->float_shift;
314  sign = S < 0;
315  if (sign)
316  S = -(unsigned)S;
317  if (S >= 0x1000000U) {
318  if (s->got_extra_bits && get_bits1(&s->gb_extra_bits))
319  S = get_bits(&s->gb_extra_bits, 23);
320  else
321  S = 0;
322  exp = 255;
323  } else if (exp) {
324  int shift = 23 - av_log2(S);
325  exp = s->float_max_exp;
326  if (exp <= shift)
327  shift = --exp;
328  exp -= shift;
329 
330  if (shift) {
331  S <<= shift;
332  if ((s->float_flag & WV_FLT_SHIFT_ONES) ||
333  (s->got_extra_bits &&
334  (s->float_flag & WV_FLT_SHIFT_SAME) &&
335  get_bits1(&s->gb_extra_bits))) {
336  S |= (1 << shift) - 1;
337  } else if (s->got_extra_bits &&
338  (s->float_flag & WV_FLT_SHIFT_SENT)) {
339  S |= get_bits(&s->gb_extra_bits, shift);
340  }
341  }
342  } else {
343  exp = s->float_max_exp;
344  }
345  S &= 0x7fffff;
346  } else {
347  sign = 0;
348  exp = 0;
349  if (s->got_extra_bits && (s->float_flag & WV_FLT_ZERO_SENT)) {
350  if (get_bits1(&s->gb_extra_bits)) {
351  S = get_bits(&s->gb_extra_bits, 23);
352  if (s->float_max_exp >= 25)
353  exp = get_bits(&s->gb_extra_bits, 8);
354  sign = get_bits1(&s->gb_extra_bits);
355  } else {
356  if (s->float_flag & WV_FLT_ZERO_SIGN)
357  sign = get_bits1(&s->gb_extra_bits);
358  }
359  }
360  }
361 
362  *crc = *crc * 27 + S * 9 + exp * 3 + sign;
363 
364  value.u = (sign << 31) | (exp << 23) | S;
365  return value.f;
366 }
367 
369 {
370  s->pos = 0;
371  s->sc.crc = s->extra_sc.crc = 0xFFFFFFFF;
372 }
373 
374 static inline int wv_check_crc(WavpackFrameContext *s, uint32_t crc,
375  uint32_t crc_extra_bits)
376 {
377  if (crc != s->CRC) {
378  av_log(s->avctx, AV_LOG_ERROR, "CRC error\n");
379  return AVERROR_INVALIDDATA;
380  }
381  if (s->got_extra_bits && crc_extra_bits != s->crc_extra_bits) {
382  av_log(s->avctx, AV_LOG_ERROR, "Extra bits CRC error\n");
383  return AVERROR_INVALIDDATA;
384  }
385 
386  return 0;
387 }
388 
390  void *dst_l, void *dst_r, const int type)
391 {
392  int i, j, count = 0;
393  int last, t;
394  int A, B, L, L2, R, R2;
395  int pos = s->pos;
396  uint32_t crc = s->sc.crc;
397  uint32_t crc_extra_bits = s->extra_sc.crc;
398  int16_t *dst16_l = dst_l;
399  int16_t *dst16_r = dst_r;
400  int32_t *dst32_l = dst_l;
401  int32_t *dst32_r = dst_r;
402  float *dstfl_l = dst_l;
403  float *dstfl_r = dst_r;
404 
405  s->one = s->zero = s->zeroes = 0;
406  do {
407  L = wv_get_value(s, gb, 0, &last);
408  if (last)
409  break;
410  R = wv_get_value(s, gb, 1, &last);
411  if (last)
412  break;
413  for (i = 0; i < s->terms; i++) {
414  t = s->decorr[i].value;
415  if (t > 0) {
416  if (t > 8) {
417  if (t & 1) {
418  A = 2U * s->decorr[i].samplesA[0] - s->decorr[i].samplesA[1];
419  B = 2U * s->decorr[i].samplesB[0] - s->decorr[i].samplesB[1];
420  } else {
421  A = (int)(3U * s->decorr[i].samplesA[0] - s->decorr[i].samplesA[1]) >> 1;
422  B = (int)(3U * s->decorr[i].samplesB[0] - s->decorr[i].samplesB[1]) >> 1;
423  }
424  s->decorr[i].samplesA[1] = s->decorr[i].samplesA[0];
425  s->decorr[i].samplesB[1] = s->decorr[i].samplesB[0];
426  j = 0;
427  } else {
428  A = s->decorr[i].samplesA[pos];
429  B = s->decorr[i].samplesB[pos];
430  j = (pos + t) & 7;
431  }
432  if (type != AV_SAMPLE_FMT_S16P) {
433  L2 = L + ((s->decorr[i].weightA * (int64_t)A + 512) >> 10);
434  R2 = R + ((s->decorr[i].weightB * (int64_t)B + 512) >> 10);
435  } else {
436  L2 = L + ((int)(s->decorr[i].weightA * (unsigned)A + 512) >> 10);
437  R2 = R + ((int)(s->decorr[i].weightB * (unsigned)B + 512) >> 10);
438  }
439  if (A && L)
440  s->decorr[i].weightA -= ((((L ^ A) >> 30) & 2) - 1) * s->decorr[i].delta;
441  if (B && R)
442  s->decorr[i].weightB -= ((((R ^ B) >> 30) & 2) - 1) * s->decorr[i].delta;
443  s->decorr[i].samplesA[j] = L = L2;
444  s->decorr[i].samplesB[j] = R = R2;
445  } else if (t == -1) {
446  if (type != AV_SAMPLE_FMT_S16P)
447  L2 = L + ((s->decorr[i].weightA * (int64_t)s->decorr[i].samplesA[0] + 512) >> 10);
448  else
449  L2 = L + ((int)(s->decorr[i].weightA * (unsigned)s->decorr[i].samplesA[0] + 512) >> 10);
450  UPDATE_WEIGHT_CLIP(s->decorr[i].weightA, s->decorr[i].delta, s->decorr[i].samplesA[0], L);
451  L = L2;
452  if (type != AV_SAMPLE_FMT_S16P)
453  R2 = R + ((s->decorr[i].weightB * (int64_t)L2 + 512) >> 10);
454  else
455  R2 = R + ((int)(s->decorr[i].weightB * (unsigned)L2 + 512) >> 10);
456  UPDATE_WEIGHT_CLIP(s->decorr[i].weightB, s->decorr[i].delta, L2, R);
457  R = R2;
458  s->decorr[i].samplesA[0] = R;
459  } else {
460  if (type != AV_SAMPLE_FMT_S16P)
461  R2 = R + ((s->decorr[i].weightB * (int64_t)s->decorr[i].samplesB[0] + 512) >> 10);
462  else
463  R2 = R + ((int)(s->decorr[i].weightB * (unsigned)s->decorr[i].samplesB[0] + 512) >> 10);
464  UPDATE_WEIGHT_CLIP(s->decorr[i].weightB, s->decorr[i].delta, s->decorr[i].samplesB[0], R);
465  R = R2;
466 
467  if (t == -3) {
468  R2 = s->decorr[i].samplesA[0];
469  s->decorr[i].samplesA[0] = R;
470  }
471 
472  if (type != AV_SAMPLE_FMT_S16P)
473  L2 = L + ((s->decorr[i].weightA * (int64_t)R2 + 512) >> 10);
474  else
475  L2 = L + ((int)(s->decorr[i].weightA * (unsigned)R2 + 512) >> 10);
476  UPDATE_WEIGHT_CLIP(s->decorr[i].weightA, s->decorr[i].delta, R2, L);
477  L = L2;
478  s->decorr[i].samplesB[0] = L;
479  }
480  }
481 
482  if (type == AV_SAMPLE_FMT_S16P) {
483  if (FFABS(L) + (unsigned)FFABS(R) > (1<<19)) {
484  av_log(s->avctx, AV_LOG_ERROR, "sample %d %d too large\n", L, R);
485  return AVERROR_INVALIDDATA;
486  }
487  }
488 
489  pos = (pos + 1) & 7;
490  if (s->joint)
491  L += (unsigned)(R -= (unsigned)(L >> 1));
492  crc = (crc * 3 + L) * 3 + R;
493 
494  if (type == AV_SAMPLE_FMT_FLTP) {
495  *dstfl_l++ = wv_get_value_float(s, &crc_extra_bits, L);
496  *dstfl_r++ = wv_get_value_float(s, &crc_extra_bits, R);
497  } else if (type == AV_SAMPLE_FMT_S32P) {
498  *dst32_l++ = wv_get_value_integer(s, &crc_extra_bits, L);
499  *dst32_r++ = wv_get_value_integer(s, &crc_extra_bits, R);
500  } else {
501  *dst16_l++ = wv_get_value_integer(s, &crc_extra_bits, L);
502  *dst16_r++ = wv_get_value_integer(s, &crc_extra_bits, R);
503  }
504  count++;
505  } while (!last && count < s->samples);
506 
508 
509  if (last && count < s->samples) {
510  int size = av_get_bytes_per_sample(type);
511  memset((uint8_t*)dst_l + count*size, 0, (s->samples-count)*size);
512  memset((uint8_t*)dst_r + count*size, 0, (s->samples-count)*size);
513  }
514 
515  if ((s->avctx->err_recognition & AV_EF_CRCCHECK) &&
516  wv_check_crc(s, crc, crc_extra_bits))
517  return AVERROR_INVALIDDATA;
518 
519  return 0;
520 }
521 
523  void *dst, const int type)
524 {
525  int i, j, count = 0;
526  int last, t;
527  int A, S, T;
528  int pos = s->pos;
529  uint32_t crc = s->sc.crc;
530  uint32_t crc_extra_bits = s->extra_sc.crc;
531  int16_t *dst16 = dst;
532  int32_t *dst32 = dst;
533  float *dstfl = dst;
534 
535  s->one = s->zero = s->zeroes = 0;
536  do {
537  T = wv_get_value(s, gb, 0, &last);
538  S = 0;
539  if (last)
540  break;
541  for (i = 0; i < s->terms; i++) {
542  t = s->decorr[i].value;
543  if (t > 8) {
544  if (t & 1)
545  A = 2U * s->decorr[i].samplesA[0] - s->decorr[i].samplesA[1];
546  else
547  A = (int)(3U * s->decorr[i].samplesA[0] - s->decorr[i].samplesA[1]) >> 1;
548  s->decorr[i].samplesA[1] = s->decorr[i].samplesA[0];
549  j = 0;
550  } else {
551  A = s->decorr[i].samplesA[pos];
552  j = (pos + t) & 7;
553  }
554  if (type != AV_SAMPLE_FMT_S16P)
555  S = T + ((s->decorr[i].weightA * (int64_t)A + 512) >> 10);
556  else
557  S = T + ((int)(s->decorr[i].weightA * (unsigned)A + 512) >> 10);
558  if (A && T)
559  s->decorr[i].weightA -= ((((T ^ A) >> 30) & 2) - 1) * s->decorr[i].delta;
560  s->decorr[i].samplesA[j] = T = S;
561  }
562  pos = (pos + 1) & 7;
563  crc = crc * 3 + S;
564 
565  if (type == AV_SAMPLE_FMT_FLTP) {
566  *dstfl++ = wv_get_value_float(s, &crc_extra_bits, S);
567  } else if (type == AV_SAMPLE_FMT_S32P) {
568  *dst32++ = wv_get_value_integer(s, &crc_extra_bits, S);
569  } else {
570  *dst16++ = wv_get_value_integer(s, &crc_extra_bits, S);
571  }
572  count++;
573  } while (!last && count < s->samples);
574 
576 
577  if (last && count < s->samples) {
578  int size = av_get_bytes_per_sample(type);
579  memset((uint8_t*)dst + count*size, 0, (s->samples-count)*size);
580  }
581 
583  int ret = wv_check_crc(s, crc, crc_extra_bits);
584  if (ret < 0 && s->avctx->err_recognition & AV_EF_EXPLODE)
585  return ret;
586  }
587 
588  return 0;
589 }
590 
592 {
594  return -1;
595 
596  c->fdec[c->fdec_num] = av_mallocz(sizeof(**c->fdec));
597  if (!c->fdec[c->fdec_num])
598  return -1;
599  c->fdec_num++;
600  c->fdec[c->fdec_num - 1]->avctx = c->avctx;
602 
603  return 0;
604 }
605 
606 #if HAVE_THREADS
607 static int init_thread_copy(AVCodecContext *avctx)
608 {
609  WavpackContext *s = avctx->priv_data;
610  s->avctx = avctx;
611  return 0;
612 }
613 #endif
614 
616 {
617  WavpackContext *s = avctx->priv_data;
618 
619  s->avctx = avctx;
620 
621  s->fdec_num = 0;
622 
623  return 0;
624 }
625 
627 {
628  WavpackContext *s = avctx->priv_data;
629  int i;
630 
631  for (i = 0; i < s->fdec_num; i++)
632  av_freep(&s->fdec[i]);
633  s->fdec_num = 0;
634 
635  return 0;
636 }
637 
638 static int wavpack_decode_block(AVCodecContext *avctx, int block_no,
639  AVFrame *frame, const uint8_t *buf, int buf_size)
640 {
641  WavpackContext *wc = avctx->priv_data;
642  ThreadFrame tframe = { .f = frame };
644  GetByteContext gb;
645  void *samples_l = NULL, *samples_r = NULL;
646  int ret;
647  int got_terms = 0, got_weights = 0, got_samples = 0,
648  got_entropy = 0, got_bs = 0, got_float = 0, got_hybrid = 0;
649  int i, j, id, size, ssize, weights, t;
650  int bpp, chan = 0, chmask = 0, orig_bpp, sample_rate = 0;
651  int multiblock;
652 
653  if (block_no >= wc->fdec_num && wv_alloc_frame_context(wc) < 0) {
654  av_log(avctx, AV_LOG_ERROR, "Error creating frame decode context\n");
655  return AVERROR_INVALIDDATA;
656  }
657 
658  s = wc->fdec[block_no];
659  if (!s) {
660  av_log(avctx, AV_LOG_ERROR, "Context for block %d is not present\n",
661  block_no);
662  return AVERROR_INVALIDDATA;
663  }
664 
665  memset(s->decorr, 0, MAX_TERMS * sizeof(Decorr));
666  memset(s->ch, 0, sizeof(s->ch));
667  s->extra_bits = 0;
668  s->and = s->or = s->shift = 0;
669  s->got_extra_bits = 0;
670 
671  bytestream2_init(&gb, buf, buf_size);
672 
673  s->samples = bytestream2_get_le32(&gb);
674  if (s->samples != wc->samples) {
675  av_log(avctx, AV_LOG_ERROR, "Mismatching number of samples in "
676  "a sequence: %d and %d\n", wc->samples, s->samples);
677  return AVERROR_INVALIDDATA;
678  }
679  s->frame_flags = bytestream2_get_le32(&gb);
680  bpp = av_get_bytes_per_sample(avctx->sample_fmt);
681  orig_bpp = ((s->frame_flags & 0x03) + 1) << 3;
682  multiblock = (s->frame_flags & WV_SINGLE_BLOCK) != WV_SINGLE_BLOCK;
683 
684  s->stereo = !(s->frame_flags & WV_MONO);
685  s->stereo_in = (s->frame_flags & WV_FALSE_STEREO) ? 0 : s->stereo;
689  s->post_shift = bpp * 8 - orig_bpp + ((s->frame_flags >> 13) & 0x1f);
690  if (s->post_shift < 0 || s->post_shift > 31) {
691  return AVERROR_INVALIDDATA;
692  }
693  s->hybrid_maxclip = ((1LL << (orig_bpp - 1)) - 1);
694  s->hybrid_minclip = ((-1UL << (orig_bpp - 1)));
695  s->CRC = bytestream2_get_le32(&gb);
696 
697  // parse metadata blocks
698  while (bytestream2_get_bytes_left(&gb)) {
699  id = bytestream2_get_byte(&gb);
700  size = bytestream2_get_byte(&gb);
701  if (id & WP_IDF_LONG) {
702  size |= (bytestream2_get_byte(&gb)) << 8;
703  size |= (bytestream2_get_byte(&gb)) << 16;
704  }
705  size <<= 1; // size is specified in words
706  ssize = size;
707  if (id & WP_IDF_ODD)
708  size--;
709  if (size < 0) {
710  av_log(avctx, AV_LOG_ERROR,
711  "Got incorrect block %02X with size %i\n", id, size);
712  break;
713  }
714  if (bytestream2_get_bytes_left(&gb) < ssize) {
715  av_log(avctx, AV_LOG_ERROR,
716  "Block size %i is out of bounds\n", size);
717  break;
718  }
719  switch (id & WP_IDF_MASK) {
720  case WP_ID_DECTERMS:
721  if (size > MAX_TERMS) {
722  av_log(avctx, AV_LOG_ERROR, "Too many decorrelation terms\n");
723  s->terms = 0;
724  bytestream2_skip(&gb, ssize);
725  continue;
726  }
727  s->terms = size;
728  for (i = 0; i < s->terms; i++) {
729  uint8_t val = bytestream2_get_byte(&gb);
730  s->decorr[s->terms - i - 1].value = (val & 0x1F) - 5;
731  s->decorr[s->terms - i - 1].delta = val >> 5;
732  }
733  got_terms = 1;
734  break;
735  case WP_ID_DECWEIGHTS:
736  if (!got_terms) {
737  av_log(avctx, AV_LOG_ERROR, "No decorrelation terms met\n");
738  continue;
739  }
740  weights = size >> s->stereo_in;
741  if (weights > MAX_TERMS || weights > s->terms) {
742  av_log(avctx, AV_LOG_ERROR, "Too many decorrelation weights\n");
743  bytestream2_skip(&gb, ssize);
744  continue;
745  }
746  for (i = 0; i < weights; i++) {
747  t = (int8_t)bytestream2_get_byte(&gb);
748  s->decorr[s->terms - i - 1].weightA = t * (1 << 3);
749  if (s->decorr[s->terms - i - 1].weightA > 0)
750  s->decorr[s->terms - i - 1].weightA +=
751  (s->decorr[s->terms - i - 1].weightA + 64) >> 7;
752  if (s->stereo_in) {
753  t = (int8_t)bytestream2_get_byte(&gb);
754  s->decorr[s->terms - i - 1].weightB = t * (1 << 3);
755  if (s->decorr[s->terms - i - 1].weightB > 0)
756  s->decorr[s->terms - i - 1].weightB +=
757  (s->decorr[s->terms - i - 1].weightB + 64) >> 7;
758  }
759  }
760  got_weights = 1;
761  break;
762  case WP_ID_DECSAMPLES:
763  if (!got_terms) {
764  av_log(avctx, AV_LOG_ERROR, "No decorrelation terms met\n");
765  continue;
766  }
767  t = 0;
768  for (i = s->terms - 1; (i >= 0) && (t < size); i--) {
769  if (s->decorr[i].value > 8) {
770  s->decorr[i].samplesA[0] =
771  wp_exp2(bytestream2_get_le16(&gb));
772  s->decorr[i].samplesA[1] =
773  wp_exp2(bytestream2_get_le16(&gb));
774 
775  if (s->stereo_in) {
776  s->decorr[i].samplesB[0] =
777  wp_exp2(bytestream2_get_le16(&gb));
778  s->decorr[i].samplesB[1] =
779  wp_exp2(bytestream2_get_le16(&gb));
780  t += 4;
781  }
782  t += 4;
783  } else if (s->decorr[i].value < 0) {
784  s->decorr[i].samplesA[0] =
785  wp_exp2(bytestream2_get_le16(&gb));
786  s->decorr[i].samplesB[0] =
787  wp_exp2(bytestream2_get_le16(&gb));
788  t += 4;
789  } else {
790  for (j = 0; j < s->decorr[i].value; j++) {
791  s->decorr[i].samplesA[j] =
792  wp_exp2(bytestream2_get_le16(&gb));
793  if (s->stereo_in) {
794  s->decorr[i].samplesB[j] =
795  wp_exp2(bytestream2_get_le16(&gb));
796  }
797  }
798  t += s->decorr[i].value * 2 * (s->stereo_in + 1);
799  }
800  }
801  got_samples = 1;
802  break;
803  case WP_ID_ENTROPY:
804  if (size != 6 * (s->stereo_in + 1)) {
805  av_log(avctx, AV_LOG_ERROR,
806  "Entropy vars size should be %i, got %i.\n",
807  6 * (s->stereo_in + 1), size);
808  bytestream2_skip(&gb, ssize);
809  continue;
810  }
811  for (j = 0; j <= s->stereo_in; j++)
812  for (i = 0; i < 3; i++) {
813  s->ch[j].median[i] = wp_exp2(bytestream2_get_le16(&gb));
814  }
815  got_entropy = 1;
816  break;
817  case WP_ID_HYBRID:
818  if (s->hybrid_bitrate) {
819  for (i = 0; i <= s->stereo_in; i++) {
820  s->ch[i].slow_level = wp_exp2(bytestream2_get_le16(&gb));
821  size -= 2;
822  }
823  }
824  for (i = 0; i < (s->stereo_in + 1); i++) {
825  s->ch[i].bitrate_acc = bytestream2_get_le16(&gb) << 16;
826  size -= 2;
827  }
828  if (size > 0) {
829  for (i = 0; i < (s->stereo_in + 1); i++) {
830  s->ch[i].bitrate_delta =
831  wp_exp2((int16_t)bytestream2_get_le16(&gb));
832  }
833  } else {
834  for (i = 0; i < (s->stereo_in + 1); i++)
835  s->ch[i].bitrate_delta = 0;
836  }
837  got_hybrid = 1;
838  break;
839  case WP_ID_INT32INFO: {
840  uint8_t val[4];
841  if (size != 4) {
842  av_log(avctx, AV_LOG_ERROR,
843  "Invalid INT32INFO, size = %i\n",
844  size);
845  bytestream2_skip(&gb, ssize - 4);
846  continue;
847  }
848  bytestream2_get_buffer(&gb, val, 4);
849  if (val[0] > 30) {
850  av_log(avctx, AV_LOG_ERROR,
851  "Invalid INT32INFO, extra_bits = %d (> 30)\n", val[0]);
852  continue;
853  } else if (val[0]) {
854  s->extra_bits = val[0];
855  } else if (val[1]) {
856  s->shift = val[1];
857  } else if (val[2]) {
858  s->and = s->or = 1;
859  s->shift = val[2];
860  } else if (val[3]) {
861  s->and = 1;
862  s->shift = val[3];
863  }
864  if (s->shift > 31) {
865  av_log(avctx, AV_LOG_ERROR,
866  "Invalid INT32INFO, shift = %d (> 31)\n", s->shift);
867  s->and = s->or = s->shift = 0;
868  continue;
869  }
870  /* original WavPack decoder forces 32-bit lossy sound to be treated
871  * as 24-bit one in order to have proper clipping */
872  if (s->hybrid && bpp == 4 && s->post_shift < 8 && s->shift > 8) {
873  s->post_shift += 8;
874  s->shift -= 8;
875  s->hybrid_maxclip >>= 8;
876  s->hybrid_minclip >>= 8;
877  }
878  break;
879  }
880  case WP_ID_FLOATINFO:
881  if (size != 4) {
882  av_log(avctx, AV_LOG_ERROR,
883  "Invalid FLOATINFO, size = %i\n", size);
884  bytestream2_skip(&gb, ssize);
885  continue;
886  }
887  s->float_flag = bytestream2_get_byte(&gb);
888  s->float_shift = bytestream2_get_byte(&gb);
889  s->float_max_exp = bytestream2_get_byte(&gb);
890  if (s->float_shift > 31) {
891  av_log(avctx, AV_LOG_ERROR,
892  "Invalid FLOATINFO, shift = %d (> 31)\n", s->float_shift);
893  s->float_shift = 0;
894  continue;
895  }
896  got_float = 1;
897  bytestream2_skip(&gb, 1);
898  break;
899  case WP_ID_DATA:
900  s->sc.offset = bytestream2_tell(&gb);
901  s->sc.size = size * 8;
902  if ((ret = init_get_bits8(&s->gb, gb.buffer, size)) < 0)
903  return ret;
904  s->data_size = size * 8;
905  bytestream2_skip(&gb, size);
906  got_bs = 1;
907  break;
908  case WP_ID_EXTRABITS:
909  if (size <= 4) {
910  av_log(avctx, AV_LOG_ERROR, "Invalid EXTRABITS, size = %i\n",
911  size);
912  bytestream2_skip(&gb, size);
913  continue;
914  }
915  s->extra_sc.offset = bytestream2_tell(&gb);
916  s->extra_sc.size = size * 8;
917  if ((ret = init_get_bits8(&s->gb_extra_bits, gb.buffer, size)) < 0)
918  return ret;
920  bytestream2_skip(&gb, size);
921  s->got_extra_bits = 1;
922  break;
923  case WP_ID_CHANINFO:
924  if (size <= 1) {
925  av_log(avctx, AV_LOG_ERROR,
926  "Insufficient channel information\n");
927  return AVERROR_INVALIDDATA;
928  }
929  chan = bytestream2_get_byte(&gb);
930  switch (size - 2) {
931  case 0:
932  chmask = bytestream2_get_byte(&gb);
933  break;
934  case 1:
935  chmask = bytestream2_get_le16(&gb);
936  break;
937  case 2:
938  chmask = bytestream2_get_le24(&gb);
939  break;
940  case 3:
941  chmask = bytestream2_get_le32(&gb);
942  break;
943  case 5:
944  size = bytestream2_get_byte(&gb);
945  if (avctx->channels != size)
946  av_log(avctx, AV_LOG_WARNING, "%i channels signalled"
947  " instead of %i.\n", size, avctx->channels);
948  chan |= (bytestream2_get_byte(&gb) & 0xF) << 8;
949  chmask = bytestream2_get_le16(&gb);
950  break;
951  default:
952  av_log(avctx, AV_LOG_ERROR, "Invalid channel info size %d\n",
953  size);
954  chan = avctx->channels;
955  chmask = avctx->channel_layout;
956  }
957  break;
958  case WP_ID_SAMPLE_RATE:
959  if (size != 3) {
960  av_log(avctx, AV_LOG_ERROR, "Invalid custom sample rate.\n");
961  return AVERROR_INVALIDDATA;
962  }
963  sample_rate = bytestream2_get_le24(&gb);
964  break;
965  default:
966  bytestream2_skip(&gb, size);
967  }
968  if (id & WP_IDF_ODD)
969  bytestream2_skip(&gb, 1);
970  }
971 
972  if (!got_terms) {
973  av_log(avctx, AV_LOG_ERROR, "No block with decorrelation terms\n");
974  return AVERROR_INVALIDDATA;
975  }
976  if (!got_weights) {
977  av_log(avctx, AV_LOG_ERROR, "No block with decorrelation weights\n");
978  return AVERROR_INVALIDDATA;
979  }
980  if (!got_samples) {
981  av_log(avctx, AV_LOG_ERROR, "No block with decorrelation samples\n");
982  return AVERROR_INVALIDDATA;
983  }
984  if (!got_entropy) {
985  av_log(avctx, AV_LOG_ERROR, "No block with entropy info\n");
986  return AVERROR_INVALIDDATA;
987  }
988  if (s->hybrid && !got_hybrid) {
989  av_log(avctx, AV_LOG_ERROR, "Hybrid config not found\n");
990  return AVERROR_INVALIDDATA;
991  }
992  if (!got_bs) {
993  av_log(avctx, AV_LOG_ERROR, "Packed samples not found\n");
994  return AVERROR_INVALIDDATA;
995  }
996  if (!got_float && avctx->sample_fmt == AV_SAMPLE_FMT_FLTP) {
997  av_log(avctx, AV_LOG_ERROR, "Float information not found\n");
998  return AVERROR_INVALIDDATA;
999  }
1000  if (s->got_extra_bits && avctx->sample_fmt != AV_SAMPLE_FMT_FLTP) {
1001  const int size = get_bits_left(&s->gb_extra_bits);
1002  const int wanted = s->samples * s->extra_bits << s->stereo_in;
1003  if (size < wanted) {
1004  av_log(avctx, AV_LOG_ERROR, "Too small EXTRABITS\n");
1005  s->got_extra_bits = 0;
1006  }
1007  }
1008 
1009  if (!wc->ch_offset) {
1010  int sr = (s->frame_flags >> 23) & 0xf;
1011  if (sr == 0xf) {
1012  if (!sample_rate) {
1013  av_log(avctx, AV_LOG_ERROR, "Custom sample rate missing.\n");
1014  return AVERROR_INVALIDDATA;
1015  }
1016  avctx->sample_rate = sample_rate;
1017  } else
1018  avctx->sample_rate = wv_rates[sr];
1019 
1020  if (multiblock) {
1021  if (chan)
1022  avctx->channels = chan;
1023  if (chmask)
1024  avctx->channel_layout = chmask;
1025  } else {
1026  avctx->channels = s->stereo ? 2 : 1;
1027  avctx->channel_layout = s->stereo ? AV_CH_LAYOUT_STEREO :
1029  }
1030 
1031  /* get output buffer */
1032  frame->nb_samples = s->samples + 1;
1033  if ((ret = ff_thread_get_buffer(avctx, &tframe, 0)) < 0)
1034  return ret;
1035  frame->nb_samples = s->samples;
1036  }
1037 
1038  if (wc->ch_offset + s->stereo >= avctx->channels) {
1039  av_log(avctx, AV_LOG_WARNING, "Too many channels coded in a packet.\n");
1040  return ((avctx->err_recognition & AV_EF_EXPLODE) || !wc->ch_offset) ? AVERROR_INVALIDDATA : 0;
1041  }
1042 
1043  samples_l = frame->extended_data[wc->ch_offset];
1044  if (s->stereo)
1045  samples_r = frame->extended_data[wc->ch_offset + 1];
1046 
1047  wc->ch_offset += 1 + s->stereo;
1048 
1049  if (s->stereo_in) {
1050  ret = wv_unpack_stereo(s, &s->gb, samples_l, samples_r, avctx->sample_fmt);
1051  if (ret < 0)
1052  return ret;
1053  } else {
1054  ret = wv_unpack_mono(s, &s->gb, samples_l, avctx->sample_fmt);
1055  if (ret < 0)
1056  return ret;
1057 
1058  if (s->stereo)
1059  memcpy(samples_r, samples_l, bpp * s->samples);
1060  }
1061 
1062  return 0;
1063 }
1064 
1066 {
1067  WavpackContext *s = avctx->priv_data;
1068  int i;
1069 
1070  for (i = 0; i < s->fdec_num; i++)
1072 }
1073 
1074 static int wavpack_decode_frame(AVCodecContext *avctx, void *data,
1075  int *got_frame_ptr, AVPacket *avpkt)
1076 {
1077  WavpackContext *s = avctx->priv_data;
1078  const uint8_t *buf = avpkt->data;
1079  int buf_size = avpkt->size;
1080  AVFrame *frame = data;
1081  int frame_size, ret, frame_flags;
1082 
1083  if (avpkt->size <= WV_HEADER_SIZE)
1084  return AVERROR_INVALIDDATA;
1085 
1086  s->block = 0;
1087  s->ch_offset = 0;
1088 
1089  /* determine number of samples */
1090  s->samples = AV_RL32(buf + 20);
1091  frame_flags = AV_RL32(buf + 24);
1092  if (s->samples <= 0 || s->samples > WV_MAX_SAMPLES) {
1093  av_log(avctx, AV_LOG_ERROR, "Invalid number of samples: %d\n",
1094  s->samples);
1095  return AVERROR_INVALIDDATA;
1096  }
1097 
1098  if (frame_flags & 0x80) {
1099  avctx->sample_fmt = AV_SAMPLE_FMT_FLTP;
1100  } else if ((frame_flags & 0x03) <= 1) {
1101  avctx->sample_fmt = AV_SAMPLE_FMT_S16P;
1102  } else {
1103  avctx->sample_fmt = AV_SAMPLE_FMT_S32P;
1104  avctx->bits_per_raw_sample = ((frame_flags & 0x03) + 1) << 3;
1105  }
1106 
1107  while (buf_size > 0) {
1108  if (buf_size <= WV_HEADER_SIZE)
1109  break;
1110  frame_size = AV_RL32(buf + 4) - 12;
1111  buf += 20;
1112  buf_size -= 20;
1113  if (frame_size <= 0 || frame_size > buf_size) {
1114  av_log(avctx, AV_LOG_ERROR,
1115  "Block %d has invalid size (size %d vs. %d bytes left)\n",
1116  s->block, frame_size, buf_size);
1117  wavpack_decode_flush(avctx);
1118  return AVERROR_INVALIDDATA;
1119  }
1120  if ((ret = wavpack_decode_block(avctx, s->block,
1121  frame, buf, frame_size)) < 0) {
1122  wavpack_decode_flush(avctx);
1123  return ret;
1124  }
1125  s->block++;
1126  buf += frame_size;
1127  buf_size -= frame_size;
1128  }
1129 
1130  if (s->ch_offset != avctx->channels) {
1131  av_log(avctx, AV_LOG_ERROR, "Not enough channels coded in a packet.\n");
1132  return AVERROR_INVALIDDATA;
1133  }
1134 
1135  *got_frame_ptr = 1;
1136 
1137  return avpkt->size;
1138 }
1139 
1141  .name = "wavpack",
1142  .long_name = NULL_IF_CONFIG_SMALL("WavPack"),
1143  .type = AVMEDIA_TYPE_AUDIO,
1144  .id = AV_CODEC_ID_WAVPACK,
1145  .priv_data_size = sizeof(WavpackContext),
1147  .close = wavpack_decode_end,
1151  .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
1152 };
int delta
Definition: wavpack.h:84
float, planar
Definition: samplefmt.h:69
#define NULL
Definition: coverity.c:32
#define WV_HYBRID_MODE
Definition: wavpack.h:39
const char const char void * val
Definition: avisynth_c.h:771
const char * s
Definition: avisynth_c.h:768
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
static int shift(int a, int b)
Definition: sonic.c:82
int median[3]
Definition: wavpack.h:95
This structure describes decoded (raw) audio or video data.
Definition: frame.h:201
unsigned bitrate_delta
Definition: wavpack.h:97
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
static void flush(AVCodecContext *avctx)
static void wavpack_decode_flush(AVCodecContext *avctx)
Definition: wavpack.c:1065
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
static int init_thread_copy(AVCodecContext *avctx)
Definition: tta.c:392
AVFrame * f
Definition: thread.h:36
int slow_level
Definition: wavpack.h:96
Definition: wvdec.c:32
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int samplesA[MAX_TERM]
Definition: wavpack.h:88
int size
Definition: avcodec.h:1680
int av_log2(unsigned v)
Definition: intmath.c:26
#define R2
Definition: simple_idct.c:164
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
Definition: bytestream.h:133
#define WV_FLT_SHIFT_ONES
Definition: wavpack.h:50
#define MAX_TERMS
Definition: wavpack.h:27
int weightB
Definition: wavpack.h:87
#define WV_HYBRID_BITRATE
Definition: wavpack.h:41
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:222
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:3164
#define AV_CH_LAYOUT_STEREO
uint32_t CRC
Definition: wavpack.c:50
AVCodec.
Definition: avcodec.h:3739
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
int ch_offset
Definition: wavpack.c:83
Decorr decorr[MAX_TERMS]
Definition: wavpack.c:58
static int get_unary_0_33(GetBitContext *gb)
Get unary code terminated by a 0 with a maximum length of 33.
Definition: unary.h:46
enum AVSampleFormat sample_fmt
audio sample format
Definition: avcodec.h:2531
uint8_t
#define av_cold
Definition: attributes.h:82
AVCodec ff_wavpack_decoder
Definition: wavpack.c:1140
static int wavpack_decode_block(AVCodecContext *avctx, int block_no, AVFrame *frame, const uint8_t *buf, int buf_size)
Definition: wavpack.c:638
Multithreading support functions.
int value
Definition: wavpack.h:85
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:343
static AVFrame * frame
uint8_t * data
Definition: avcodec.h:1679
const uint8_t * buffer
Definition: bytestream.h:34
bitstream reader API header.
#define WV_HEADER_SIZE
Definition: wavpack.h:30
#define WV_FLT_ZERO_SIGN
Definition: wavpack.h:54
ptrdiff_t size
Definition: opengl_enc.c:101
static av_always_inline int wp_log2(uint32_t val)
Definition: wavpack.h:180
int fdec_num
Definition: wavpack.c:79
#define A(x)
Definition: vp56_arith.h:28
#define av_log(a,...)
WavpackFrameContext * fdec[WV_MAX_FRAME_DECODERS]
Definition: wavpack.c:78
#define U(x)
Definition: vp56_arith.h:37
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:587
static int update_error_limit(WavpackFrameContext *ctx)
Definition: wavpack.c:102
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define S(s, c, i)
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
Definition: bytestream.h:164
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:179
static av_always_inline int wp_exp2(int16_t val)
Definition: wavpack.h:163
static av_always_inline unsigned int bytestream2_get_buffer(GetByteContext *g, uint8_t *dst, unsigned int size)
Definition: bytestream.h:263
AVCodecContext * avctx
Definition: wavpack.c:46
static av_always_inline unsigned int bytestream2_get_bytes_left(GetByteContext *g)
Definition: bytestream.h:154
#define WV_SINGLE_BLOCK
Definition: wavpack.h:48
const char * name
Name of the codec implementation.
Definition: avcodec.h:3746
GLsizei count
Definition: opengl_enc.c:109
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1065
int8_t exp
Definition: eval.c:65
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:2574
#define ONLY_IF_THREADS_ENABLED(x)
Define a function with only the non-default version specified.
Definition: internal.h:218
int weightA
Definition: wavpack.h:86
uint32_t crc
Definition: wavpack.c:42
#define T(x)
Definition: vp56_arith.h:29
audio channel layout utility functions
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:3050
signed 32 bits, planar
Definition: samplefmt.h:68
static int wv_unpack_stereo(WavpackFrameContext *s, GetBitContext *gb, void *dst_l, void *dst_r, const int type)
Definition: wavpack.c:389
static const int wv_rates[16]
Definition: wavpack.h:119
#define WV_FALSE_STEREO
Definition: wavpack.h:37
static void wv_reset_saved_context(WavpackFrameContext *s)
Definition: wavpack.c:368
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
static int wv_unpack_mono(WavpackFrameContext *s, GetBitContext *gb, void *dst, const int type)
Definition: wavpack.c:522
int32_t
AVFormatContext * ctx
Definition: movenc.c:48
#define WV_FLT_SHIFT_SAME
Definition: wavpack.h:51
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:3061
#define WV_FLT_SHIFT_SENT
Definition: wavpack.h:52
#define L(x)
Definition: vp56_arith.h:36
static void error(const char *err)
int error_limit
Definition: wavpack.h:96
static av_always_inline int bytestream2_tell(GetByteContext *g)
Definition: bytestream.h:188
static av_cold int wavpack_decode_end(AVCodecContext *avctx)
Definition: wavpack.c:626
#define GET_MED(n)
Definition: wavpack.h:101
sample_rate
int frame_size
Definition: mxfenc.c:1896
uint32_t crc_extra_bits
Definition: wavpack.c:53
Libavcodec external API header.
int sample_rate
samples per second
Definition: avcodec.h:2523
unsigned bitrate_acc
Definition: wavpack.h:97
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:456
int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
Wrapper around get_buffer() for frame-multithreaded codecs.
main external API structure.
Definition: avcodec.h:1761
static float wv_get_value_float(WavpackFrameContext *s, uint32_t *crc, int S)
Definition: wavpack.c:294
int samplesB[MAX_TERM]
Definition: wavpack.h:89
static int wv_get_value_integer(WavpackFrameContext *s, uint32_t *crc, unsigned S)
Definition: wavpack.c:270
void * buf
Definition: avisynth_c.h:690
#define LEVEL_DECAY(a)
Definition: wavpack.c:86
GLint GLenum type
Definition: opengl_enc.c:105
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:313
SavedContext sc
Definition: wavpack.c:70
#define WV_JOINT_STEREO
Definition: wavpack.h:33
#define AV_EF_CRCCHECK
Verify checksums embedded in the bitstream (could be of either encoded or decoded data...
Definition: avcodec.h:3058
static int wavpack_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
Definition: wavpack.c:1074
static int wv_check_crc(WavpackFrameContext *s, uint32_t crc, uint32_t crc_extra_bits)
Definition: wavpack.c:374
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
Definition: get_bits.h:346
static int wv_get_value(WavpackFrameContext *ctx, GetBitContext *gb, int channel, int *last)
Definition: wavpack.c:140
WvChannel ch[2]
Definition: wavpack.c:68
#define UPDATE_WEIGHT_CLIP(weight, delta, samples, in)
Definition: wavpack.h:106
int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt)
Return number of bytes per sample.
Definition: samplefmt.c:106
static av_always_inline int get_tail(GetBitContext *gb, int k)
Definition: wavpack.c:88
int
common internal api header.
int offset
Definition: wavpack.c:39
static double c[64]
#define WV_FLT_ZERO_SENT
Definition: wavpack.h:53
channel
Use these values when setting the channel map with ebur128_set_channel().
Definition: ebur128.h:39
Definition: vf_geq.c:47
int size
Definition: wavpack.c:40
#define INC_MED(n)
Definition: wavpack.h:103
int bits_used
Definition: wavpack.c:41
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:777
GetBitContext gb_extra_bits
Definition: wavpack.c:54
void * priv_data
Definition: avcodec.h:1803
Definition: vf_geq.c:47
int channels
number of audio channels
Definition: avcodec.h:2524
AVCodecContext * avctx
Definition: wavpack.c:76
#define WV_MAX_SAMPLES
Definition: wavpack.h:56
#define DEC_MED(n)
Definition: wavpack.h:102
Definition: wavpack.h:83
GetBitContext gb
Definition: wavpack.c:51
#define av_freep(p)
signed 16 bits, planar
Definition: samplefmt.h:67
#define av_always_inline
Definition: attributes.h:39
static av_cold int wv_alloc_frame_context(WavpackContext *c)
Definition: wavpack.c:591
static av_cold int wavpack_decode_init(AVCodecContext *avctx)
Definition: wavpack.c:615
#define WV_MAX_FRAME_DECODERS
Definition: wavpack.c:73
uint8_t ** extended_data
pointers to the data planes/channels.
Definition: frame.h:248
#define AV_CH_LAYOUT_MONO
enum AVCodecID id
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
This structure stores compressed data.
Definition: avcodec.h:1656
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:267
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:1002
#define t2
Definition: regdef.h:30
static av_always_inline int get_bitsz(GetBitContext *s, int n)
Read 0-25 bits.
Definition: get_bits.h:276
SavedContext extra_sc
Definition: wavpack.c:70