FFmpeg  4.4.4
brstm.c
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1 /*
2  * BRSTM demuxer
3  * Copyright (c) 2012 Paul B Mahol
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 
22 #include "libavutil/intreadwrite.h"
23 #include "libavcodec/bytestream.h"
24 #include "avformat.h"
25 #include "internal.h"
26 
27 typedef struct BRSTMCoeffOffset {
29  uint32_t offset;
31 
32 typedef struct BRSTMDemuxContext {
33  uint32_t block_size;
34  uint32_t block_count;
35  uint32_t current_block;
38  uint32_t last_block_size;
40  uint32_t data_start;
41  uint8_t table[256 * 32];
46 
47 static int probe(const AVProbeData *p)
48 {
49  if (AV_RL32(p->buf) == MKTAG('R','S','T','M') &&
50  (AV_RL16(p->buf + 4) == 0xFFFE ||
51  AV_RL16(p->buf + 4) == 0xFEFF))
52  return AVPROBE_SCORE_MAX / 3 * 2;
53  return 0;
54 }
55 
56 static int probe_bfstm(const AVProbeData *p)
57 {
58  if ((AV_RL32(p->buf) == MKTAG('F','S','T','M') ||
59  AV_RL32(p->buf) == MKTAG('C','S','T','M')) &&
60  (AV_RL16(p->buf + 4) == 0xFFFE ||
61  AV_RL16(p->buf + 4) == 0xFEFF))
62  return AVPROBE_SCORE_MAX / 3 * 2;
63  return 0;
64 }
65 
67 {
68  BRSTMDemuxContext *b = s->priv_data;
69 
70  av_freep(&b->adpc);
71 
72  return 0;
73 }
74 
75 static int sort_offsets(const void *a, const void *b)
76 {
77  const BRSTMCoeffOffset *s1 = a;
78  const BRSTMCoeffOffset *s2 = b;
79  return FFDIFFSIGN(s1->offset, s2->offset);
80 }
81 
83 {
84  BRSTMDemuxContext *b = s->priv_data;
85  if (b->little_endian)
86  return avio_rl16(s->pb);
87  else
88  return avio_rb16(s->pb);
89 }
90 
92 {
93  BRSTMDemuxContext *b = s->priv_data;
94  if (b->little_endian)
95  return avio_rl32(s->pb);
96  else
97  return avio_rb32(s->pb);
98 }
99 
101 {
102  BRSTMDemuxContext *b = s->priv_data;
103  int bom, major, minor, codec, chunk;
104  int64_t h1offset, pos, toffset;
105  uint32_t size, asize, start = 0;
106  AVStream *st;
107  int ret = AVERROR_EOF;
108  int loop = 0;
109  int bfstm = !strcmp("bfstm", s->iformat->name);
110 
111  st = avformat_new_stream(s, NULL);
112  if (!st)
113  return AVERROR(ENOMEM);
115 
116  avio_skip(s->pb, 4);
117 
118  bom = avio_rb16(s->pb);
119  if (bom != 0xFEFF && bom != 0xFFFE) {
120  av_log(s, AV_LOG_ERROR, "invalid byte order: %X\n", bom);
121  return AVERROR_INVALIDDATA;
122  }
123 
124  if (bom == 0xFFFE)
125  b->little_endian = 1;
126 
127  if (!bfstm) {
128  major = avio_r8(s->pb);
129  minor = avio_r8(s->pb);
130  avio_skip(s->pb, 4); // size of file
131  size = read16(s);
132  if (size < 14)
133  return AVERROR_INVALIDDATA;
134 
135  avio_skip(s->pb, size - 14);
136  pos = avio_tell(s->pb);
137  if (avio_rl32(s->pb) != MKTAG('H','E','A','D'))
138  return AVERROR_INVALIDDATA;
139  } else {
140  uint32_t info_offset = 0;
141  uint16_t section_count, header_size, i;
142 
143  header_size = read16(s); // 6
144 
145  avio_skip(s->pb, 4); // Unknown constant 0x00030000
146  avio_skip(s->pb, 4); // size of file
147  section_count = read16(s);
148  avio_skip(s->pb, 2); // padding
149  for (i = 0; avio_tell(s->pb) < header_size
150  && !(start && info_offset)
151  && i < section_count; i++) {
152  uint16_t flag = read16(s);
153  avio_skip(s->pb, 2);
154  switch (flag) {
155  case 0x4000:
156  info_offset = read32(s);
157  /*info_size =*/ read32(s);
158  break;
159  case 0x4001:
160  avio_skip(s->pb, 4); // seek offset
161  avio_skip(s->pb, 4); // seek size
162  break;
163  case 0x4002:
164  start = read32(s) + 8;
165  avio_skip(s->pb, 4); //data_size = read32(s);
166  break;
167  case 0x4003:
168  avio_skip(s->pb, 4); // REGN offset
169  avio_skip(s->pb, 4); // REGN size
170  break;
171  }
172  }
173 
174  if (!info_offset || !start)
175  return AVERROR_INVALIDDATA;
176 
177  avio_skip(s->pb, info_offset - avio_tell(s->pb));
178  pos = avio_tell(s->pb);
179  if (avio_rl32(s->pb) != MKTAG('I','N','F','O'))
180  return AVERROR_INVALIDDATA;
181  }
182 
183  size = read32(s);
184  if (size < 40)
185  return AVERROR_INVALIDDATA;
186  avio_skip(s->pb, 4); // unknown
187  h1offset = read32(s);
188  if (h1offset > size)
189  return AVERROR_INVALIDDATA;
190  avio_skip(s->pb, 12);
191  toffset = read32(s) + 16LL;
192  if (toffset > size)
193  return AVERROR_INVALIDDATA;
194 
195  avio_skip(s->pb, pos + h1offset + 8 - avio_tell(s->pb));
196  codec = avio_r8(s->pb);
197 
198  switch (codec) {
199  case 0: codec = AV_CODEC_ID_PCM_S8_PLANAR; break;
200  case 1: codec = b->little_endian ?
203  case 2: codec = b->little_endian ?
205  AV_CODEC_ID_ADPCM_THP; break;
206  default:
207  avpriv_request_sample(s, "codec %d", codec);
208  return AVERROR_PATCHWELCOME;
209  }
210 
211  loop = avio_r8(s->pb); // loop flag
212  st->codecpar->codec_id = codec;
213  st->codecpar->channels = avio_r8(s->pb);
214  if (!st->codecpar->channels)
215  return AVERROR_INVALIDDATA;
216 
217  avio_skip(s->pb, 1); // padding
218 
219  st->codecpar->sample_rate = bfstm ? read32(s) : read16(s);
220  if (st->codecpar->sample_rate <= 0)
221  return AVERROR_INVALIDDATA;
222 
223  if (!bfstm)
224  avio_skip(s->pb, 2); // padding
225 
226  if (loop) {
227  if (av_dict_set_int(&s->metadata, "loop_start",
229  st->codecpar->sample_rate),
230  0) < 0)
231  return AVERROR(ENOMEM);
232  } else {
233  avio_skip(s->pb, 4);
234  }
235 
236  st->start_time = 0;
237  st->duration = read32(s);
238  avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
239 
240  if (!bfstm)
241  start = read32(s);
242  b->current_block = 0;
243  b->block_count = read32(s);
244  if (b->block_count > UINT16_MAX) {
245  av_log(s, AV_LOG_WARNING, "too many blocks: %"PRIu32"\n", b->block_count);
246  return AVERROR_INVALIDDATA;
247  }
248 
249  b->block_size = read32(s);
250  if (b->block_size > UINT32_MAX / st->codecpar->channels)
251  return AVERROR_INVALIDDATA;
252 
253  b->samples_per_block = read32(s);
254  b->last_block_used_bytes = read32(s);
255  b->last_block_samples = read32(s);
256  b->last_block_size = read32(s);
257  if (b->last_block_size > UINT32_MAX / st->codecpar->channels)
258  return AVERROR_INVALIDDATA;
259  if (b->last_block_used_bytes > b->last_block_size)
260  return AVERROR_INVALIDDATA;
261 
262 
263  if (codec == AV_CODEC_ID_ADPCM_THP || codec == AV_CODEC_ID_ADPCM_THP_LE) {
264  int ch;
265 
266  avio_skip(s->pb, pos + toffset - avio_tell(s->pb));
267  if (!bfstm)
268  toffset = read32(s) + 16LL;
269  else
270  toffset = toffset + read32(s) + st->codecpar->channels * 8 - 8;
271  if (toffset > size)
272  return AVERROR_INVALIDDATA;
273 
274  if (!bfstm) {
275  avio_skip(s->pb, pos + toffset - avio_tell(s->pb) - 8LL * (st->codecpar->channels + 1));
276  for (ch = 0; ch < st->codecpar->channels; ch++) {
277  avio_skip(s->pb, 4);
278  b->offsets[ch].channel = ch;
279  b->offsets[ch].offset = read32(s);
280  }
281 
282  qsort(b->offsets, st->codecpar->channels, sizeof(*b->offsets), sort_offsets);
283  }
284 
285  avio_skip(s->pb, pos + toffset - avio_tell(s->pb));
286 
287  for (ch = 0; ch < st->codecpar->channels; ch++) {
288  if (!bfstm)
289  avio_skip(s->pb, pos + 16LL + b->offsets[ch].offset - avio_tell(s->pb));
290 
291  if (avio_read(s->pb, b->table + ch * 32, 32) != 32) {
292  ret = AVERROR_INVALIDDATA;
293  goto fail;
294  }
295 
296  if (bfstm)
297  avio_skip(s->pb, 14);
298  }
299  }
300 
301  if (size < (avio_tell(s->pb) - pos)) {
302  ret = AVERROR_INVALIDDATA;
303  goto fail;
304  }
305 
306  avio_skip(s->pb, size - (avio_tell(s->pb) - pos));
307 
308  while (!avio_feof(s->pb)) {
309  chunk = avio_rl32(s->pb);
310  size = read32(s);
311  if (size < 8) {
312  ret = AVERROR_INVALIDDATA;
313  goto fail;
314  }
315  size -= 8;
316  switch (chunk) {
317  case MKTAG('S','E','E','K'):
318  case MKTAG('A','D','P','C'):
319  if (codec != AV_CODEC_ID_ADPCM_THP &&
320  codec != AV_CODEC_ID_ADPCM_THP_LE)
321  goto skip;
322 
323  asize = b->block_count * st->codecpar->channels * 4;
324  if (size < asize) {
325  ret = AVERROR_INVALIDDATA;
326  goto fail;
327  }
328  if (b->adpc) {
329  av_log(s, AV_LOG_WARNING, "skipping additional ADPC chunk\n");
330  goto skip;
331  } else {
332  b->adpc = av_mallocz(asize);
333  if (!b->adpc) {
334  ret = AVERROR(ENOMEM);
335  goto fail;
336  }
337  if (bfstm && codec != AV_CODEC_ID_ADPCM_THP_LE) {
338  // Big-endian BFSTMs have little-endian SEEK tables
339  // for some strange reason.
340  int i;
341  for (i = 0; i < asize; i += 2) {
342  b->adpc[i+1] = avio_r8(s->pb);
343  b->adpc[i] = avio_r8(s->pb);
344  }
345  } else {
346  avio_read(s->pb, b->adpc, asize);
347  }
348  avio_skip(s->pb, size - asize);
349  }
350  break;
351  case MKTAG('D','A','T','A'):
352  if ((start < avio_tell(s->pb)) ||
353  (!b->adpc && (codec == AV_CODEC_ID_ADPCM_THP ||
354  codec == AV_CODEC_ID_ADPCM_THP_LE))) {
355  ret = AVERROR_INVALIDDATA;
356  goto fail;
357  }
358  avio_skip(s->pb, start - avio_tell(s->pb));
359 
360  if (bfstm && (codec == AV_CODEC_ID_ADPCM_THP ||
361  codec == AV_CODEC_ID_ADPCM_THP_LE))
362  avio_skip(s->pb, 24);
363 
364  b->data_start = avio_tell(s->pb);
365 
366  if (!bfstm && (major != 1 || minor))
367  avpriv_request_sample(s, "Version %d.%d", major, minor);
368 
369  return 0;
370  default:
371  av_log(s, AV_LOG_WARNING, "skipping unknown chunk: %X\n", chunk);
372 skip:
373  avio_skip(s->pb, size);
374  }
375  }
376 
377 fail:
378  read_close(s);
379 
380  return ret;
381 }
382 
384 {
385  AVCodecParameters *par = s->streams[0]->codecpar;
386  BRSTMDemuxContext *b = s->priv_data;
387  uint32_t samples, size, skip = 0;
388  int ret, i;
389 
390  if (avio_feof(s->pb))
391  return AVERROR_EOF;
392  b->current_block++;
393  if (b->current_block == b->block_count) {
394  size = b->last_block_used_bytes;
395  samples = b->last_block_samples;
396  skip = b->last_block_size - b->last_block_used_bytes;
397 
398  if (samples < size * 14 / 8) {
399  uint32_t adjusted_size = samples / 14 * 8;
400  if (samples % 14)
401  adjusted_size += (samples % 14 + 1) / 2 + 1;
402 
403  skip += size - adjusted_size;
404  size = adjusted_size;
405  }
406  } else if (b->current_block < b->block_count) {
407  size = b->block_size;
408  samples = b->samples_per_block;
409  } else {
410  return AVERROR_EOF;
411  }
412 
413  if (par->codec_id == AV_CODEC_ID_ADPCM_THP ||
415  uint8_t *dst;
416 
417  if (!b->adpc) {
418  av_log(s, AV_LOG_ERROR, "adpcm_thp requires ADPC chunk, but none was found.\n");
419  return AVERROR_INVALIDDATA;
420  }
421 
422  if (size > (INT_MAX - 32 - 4) ||
423  (32 + 4 + size) > (INT_MAX / par->channels) ||
424  (32 + 4 + size) * par->channels > INT_MAX - 8)
425  return AVERROR_INVALIDDATA;
426  if ((ret = av_new_packet(pkt, 8 + (32 + 4 + size) * par->channels)) < 0)
427  return ret;
428  dst = pkt->data;
429  if (par->codec_id == AV_CODEC_ID_ADPCM_THP_LE) {
430  bytestream_put_le32(&dst, size * par->channels);
431  bytestream_put_le32(&dst, samples);
432  } else {
433  bytestream_put_be32(&dst, size * par->channels);
434  bytestream_put_be32(&dst, samples);
435  }
436  bytestream_put_buffer(&dst, b->table, 32 * par->channels);
437  bytestream_put_buffer(&dst, b->adpc + 4 * par->channels *
438  (b->current_block - 1), 4 * par->channels);
439 
440  for (i = 0; i < par->channels; i++) {
441  ret = avio_read(s->pb, dst, size);
442  dst += size;
443  avio_skip(s->pb, skip);
444  if (ret != size) {
445  return AVERROR(EIO);
446  }
447  }
448  pkt->duration = samples;
449  } else {
450  size *= par->channels;
451  ret = av_get_packet(s->pb, pkt, size);
452  }
453 
454  pkt->stream_index = 0;
455 
456  if (ret != size)
457  ret = AVERROR(EIO);
458 
459  return ret;
460 }
461 
462 static int read_seek(AVFormatContext *s, int stream_index,
463  int64_t timestamp, int flags)
464 {
465  AVStream *st = s->streams[stream_index];
466  BRSTMDemuxContext *b = s->priv_data;
467  int64_t ret = 0;
468 
469  if (timestamp < 0)
470  timestamp = 0;
471  timestamp /= b->samples_per_block;
472  if (timestamp >= b->block_count)
473  timestamp = b->block_count - 1;
474  ret = avio_seek(s->pb, b->data_start + timestamp * b->block_size *
475  st->codecpar->channels, SEEK_SET);
476  if (ret < 0)
477  return ret;
478 
479  b->current_block = timestamp;
480  ff_update_cur_dts(s, st, timestamp * b->samples_per_block);
481  return 0;
482 }
483 
485  .name = "brstm",
486  .long_name = NULL_IF_CONFIG_SMALL("BRSTM (Binary Revolution Stream)"),
487  .priv_data_size = sizeof(BRSTMDemuxContext),
488  .read_probe = probe,
492  .read_seek = read_seek,
493  .extensions = "brstm",
494 };
495 
497  .name = "bfstm",
498  .long_name = NULL_IF_CONFIG_SMALL("BFSTM (Binary Cafe Stream)"),
499  .priv_data_size = sizeof(BRSTMDemuxContext),
504  .read_seek = read_seek,
505  .extensions = "bfstm,bcstm",
506 };
#define av_always_inline
Definition: attributes.h:45
uint8_t
Main libavformat public API header.
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:453
int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
Allocate and read the payload of a packet and initialize its fields with default values.
Definition: utils.c:310
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:253
unsigned int avio_rb16(AVIOContext *s)
Definition: aviobuf.c:766
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
Definition: aviobuf.c:364
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
unsigned int avio_rl16(AVIOContext *s)
Definition: aviobuf.c:734
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:337
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:633
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:750
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:781
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:624
#define AV_RL16
Definition: intreadwrite.h:42
#define AV_RL32
Definition: intreadwrite.h:146
static int read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Definition: brstm.c:462
static int sort_offsets(const void *a, const void *b)
Definition: brstm.c:75
AVInputFormat ff_brstm_demuxer
Definition: brstm.c:484
static int read_close(AVFormatContext *s)
Definition: brstm.c:66
static av_always_inline unsigned int read32(AVFormatContext *s)
Definition: brstm.c:91
static int read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: brstm.c:383
static int probe_bfstm(const AVProbeData *p)
Definition: brstm.c:56
AVInputFormat ff_bfstm_demuxer
Definition: brstm.c:496
static int read_header(AVFormatContext *s)
Definition: brstm.c:100
static int probe(const AVProbeData *p)
Definition: brstm.c:47
static av_always_inline unsigned int read16(AVFormatContext *s)
Definition: brstm.c:82
static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
Definition: bytestream.h:372
#define flag(name)
Definition: cbs_av1.c:553
#define flags(name, subs,...)
Definition: cbs_av1.c:561
#define s(width, name)
Definition: cbs_vp9.c:257
#define fail()
Definition: checkasm.h:133
#define MKTAG(a, b, c, d)
Definition: common.h:478
#define FFDIFFSIGN(x, y)
Comparator.
Definition: common.h:101
#define NULL
Definition: coverity.c:32
static int loop
Definition: ffplay.c:341
@ AV_CODEC_ID_PCM_S16BE_PLANAR
Definition: codec_id.h:343
@ AV_CODEC_ID_ADPCM_THP
Definition: codec_id.h:371
@ AV_CODEC_ID_ADPCM_THP_LE
Definition: codec_id.h:390
@ AV_CODEC_ID_PCM_S16LE_PLANAR
Definition: codec_id.h:331
@ AV_CODEC_ID_PCM_S8_PLANAR
Definition: codec_id.h:340
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:99
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4509
int av_dict_set_int(AVDictionary **pm, const char *key, int64_t value, int flags)
Convenience wrapper for av_dict_set that converts the value to a string and stores it.
Definition: dict.c:147
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AVERROR_EOF
End of file.
Definition: error.h:55
#define AVERROR(e)
Definition: error.h:43
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:129
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:237
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
int i
Definition: input.c:407
void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
Update cur_dts of all streams based on the given timestamp and AVStream.
Definition: utils.c:1927
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4945
static int read_probe(const AVProbeData *pd)
Definition: jvdec.c:55
static const char * bom
Definition: microdvddec.c:77
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
#define s1
Definition: regdef.h:38
#define s2
Definition: regdef.h:39
unsigned int pos
Definition: spdifenc.c:412
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
int channels
Audio only.
Definition: codec_par.h:166
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
int sample_rate
Audio only.
Definition: codec_par.h:170
Format I/O context.
Definition: avformat.h:1232
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:645
This structure stores compressed data.
Definition: packet.h:346
int stream_index
Definition: packet.h:371
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:387
uint8_t * data
Definition: packet.h:369
This structure contains the data a format has to probe a file.
Definition: avformat.h:441
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:443
Stream structure.
Definition: avformat.h:873
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1038
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:922
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base.
Definition: avformat.h:912
uint8_t channel
Definition: brstm.c:28
uint32_t offset
Definition: brstm.c:29
uint32_t last_block_used_bytes
Definition: brstm.c:37
int little_endian
Definition: brstm.c:44
uint32_t samples_per_block
Definition: brstm.c:36
uint32_t last_block_samples
Definition: brstm.c:39
uint32_t block_count
Definition: brstm.c:34
BRSTMCoeffOffset offsets[256]
Definition: brstm.c:43
uint32_t last_block_size
Definition: brstm.c:38
uint32_t block_size
Definition: brstm.c:33
uint8_t * adpc
Definition: brstm.c:42
uint32_t current_block
Definition: brstm.c:35
uint32_t data_start
Definition: brstm.c:40
uint8_t table[256 *32]
Definition: brstm.c:41
#define avpriv_request_sample(...)
#define av_freep(p)
#define av_log(a,...)
AVPacket * pkt
Definition: movenc.c:59
int size
const char * b
Definition: vf_curves.c:118