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wavdec.c
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1 /*
2  * WAV demuxer
3  * Copyright (c) 2001, 2002 Fabrice Bellard
4  *
5  * Sony Wave64 demuxer
6  * RF64 demuxer
7  * Copyright (c) 2009 Daniel Verkamp
8  *
9  * This file is part of FFmpeg.
10  *
11  * FFmpeg is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU Lesser General Public
13  * License as published by the Free Software Foundation; either
14  * version 2.1 of the License, or (at your option) any later version.
15  *
16  * FFmpeg is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19  * Lesser General Public License for more details.
20  *
21  * You should have received a copy of the GNU Lesser General Public
22  * License along with FFmpeg; if not, write to the Free Software
23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24  */
25 
26 #include <stdint.h>
27 
28 #include "libavutil/avassert.h"
29 #include "libavutil/dict.h"
30 #include "libavutil/intreadwrite.h"
31 #include "libavutil/log.h"
32 #include "libavutil/mathematics.h"
33 #include "libavutil/opt.h"
34 #include "avformat.h"
35 #include "avio.h"
36 #include "avio_internal.h"
37 #include "internal.h"
38 #include "metadata.h"
39 #include "pcm.h"
40 #include "riff.h"
41 #include "w64.h"
42 #include "spdif.h"
43 
44 typedef struct WAVDemuxContext {
45  const AVClass *class;
46  int64_t data_end;
47  int w64;
48  int64_t smv_data_ofs;
51  int smv_block;
53  int smv_eof;
54  int audio_eof;
56  int spdif;
59  int unaligned; // e.g. if an odd number of bytes ID3 tag was prepended
60  int rifx; // RIFX: integer byte order for parameters is big endian
62 
64 {
65  if (CONFIG_SPDIF_DEMUXER && s->streams[0]->codecpar->codec_tag == 1) {
66  enum AVCodecID codec;
67  uint8_t *buf = NULL;
68  int len = 1<<16;
69  int ret = ffio_ensure_seekback(s->pb, len);
70  int64_t pos = avio_tell(s->pb);
71 
72  if (ret < 0)
73  goto end;
74 
75  buf = av_malloc(len);
76  if (!buf) {
77  ret = AVERROR(ENOMEM);
78  goto end;
79  }
80 
81  len = ret = avio_read(s->pb, buf, len);
82  if (ret < 0)
83  goto end;
84 
85  ret = ff_spdif_probe(buf, len, &codec);
86  if (ret > AVPROBE_SCORE_EXTENSION) {
87  s->streams[0]->codecpar->codec_id = codec;
88  wav->spdif = 1;
89  }
90 end:
91  avio_seek(s->pb, pos, SEEK_SET);
92  if (ret < 0)
93  av_log(s, AV_LOG_WARNING, "Cannot check for SPDIF\n");
94  av_free(buf);
95  }
96 }
97 
98 #if CONFIG_WAV_DEMUXER
99 
100 static int64_t next_tag(AVIOContext *pb, uint32_t *tag, int big_endian)
101 {
102  *tag = avio_rl32(pb);
103  if (!big_endian) {
104  return avio_rl32(pb);
105  } else {
106  return avio_rb32(pb);
107  }
108 }
109 
110 /* RIFF chunks are always at even offsets relative to where they start. */
111 static int64_t wav_seek_tag(WAVDemuxContext * wav, AVIOContext *s, int64_t offset, int whence)
112 {
113  offset += offset < INT64_MAX && offset + wav->unaligned & 1;
114 
115  return avio_seek(s, offset, whence);
116 }
117 
118 /* return the size of the found tag */
119 static int64_t find_tag(WAVDemuxContext * wav, AVIOContext *pb, uint32_t tag1)
120 {
121  unsigned int tag;
122  int64_t size;
123 
124  for (;;) {
125  if (avio_feof(pb))
126  return AVERROR_EOF;
127  size = next_tag(pb, &tag, wav->rifx);
128  if (tag == tag1)
129  break;
130  wav_seek_tag(wav, pb, size, SEEK_CUR);
131  }
132  return size;
133 }
134 
135 static int wav_probe(AVProbeData *p)
136 {
137  /* check file header */
138  if (p->buf_size <= 32)
139  return 0;
140  if (!memcmp(p->buf + 8, "WAVE", 4)) {
141  if (!memcmp(p->buf, "RIFF", 4) || !memcmp(p->buf, "RIFX", 4))
142  /* Since the ACT demuxer has a standard WAV header at the top of
143  * its own, the returned score is decreased to avoid a probe
144  * conflict between ACT and WAV. */
145  return AVPROBE_SCORE_MAX - 1;
146  else if (!memcmp(p->buf, "RF64", 4) &&
147  !memcmp(p->buf + 12, "ds64", 4))
148  return AVPROBE_SCORE_MAX;
149  }
150  return 0;
151 }
152 
153 static void handle_stream_probing(AVStream *st)
154 {
157  st->probe_packets = FFMIN(st->probe_packets, 32);
158  }
159 }
160 
161 static int wav_parse_fmt_tag(AVFormatContext *s, int64_t size, AVStream **st)
162 {
163  AVIOContext *pb = s->pb;
164  WAVDemuxContext *wav = s->priv_data;
165  int ret;
166 
167  /* parse fmt header */
168  *st = avformat_new_stream(s, NULL);
169  if (!*st)
170  return AVERROR(ENOMEM);
171 
172  ret = ff_get_wav_header(s, pb, (*st)->codecpar, size, wav->rifx);
173  if (ret < 0)
174  return ret;
175  handle_stream_probing(*st);
176 
177  (*st)->need_parsing = AVSTREAM_PARSE_FULL_RAW;
178 
179  avpriv_set_pts_info(*st, 64, 1, (*st)->codecpar->sample_rate);
180 
181  return 0;
182 }
183 
184 static int wav_parse_xma2_tag(AVFormatContext *s, int64_t size, AVStream **st)
185 {
186  AVIOContext *pb = s->pb;
187  int num_streams, i, channels = 0;
188 
189  if (size < 44)
190  return AVERROR_INVALIDDATA;
191 
192  *st = avformat_new_stream(s, NULL);
193  if (!*st)
194  return AVERROR(ENOMEM);
195 
196  (*st)->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
197  (*st)->codecpar->codec_id = AV_CODEC_ID_XMA2;
198  (*st)->need_parsing = AVSTREAM_PARSE_FULL_RAW;
199 
200  avio_skip(pb, 1);
201  num_streams = avio_r8(pb);
202  if (size < 40 + num_streams * 4)
203  return AVERROR_INVALIDDATA;
204  avio_skip(pb, 10);
205  (*st)->codecpar->sample_rate = avio_rb32(pb);
206  avio_skip(pb, 12);
207  (*st)->duration = avio_rb32(pb);
208  avio_skip(pb, 8);
209 
210  for (i = 0; i < num_streams; i++) {
211  channels += avio_r8(pb);
212  avio_skip(pb, 3);
213  }
214  (*st)->codecpar->channels = channels;
215 
216  if ((*st)->codecpar->channels <= 0 || (*st)->codecpar->sample_rate <= 0)
217  return AVERROR_INVALIDDATA;
218 
219  avpriv_set_pts_info(*st, 64, 1, (*st)->codecpar->sample_rate);
220  if (ff_alloc_extradata((*st)->codecpar, 34))
221  return AVERROR(ENOMEM);
222  memset((*st)->codecpar->extradata, 0, 34);
223 
224  return 0;
225 }
226 
227 static inline int wav_parse_bext_string(AVFormatContext *s, const char *key,
228  int length)
229 {
230  char temp[257];
231  int ret;
232 
233  av_assert0(length <= sizeof(temp));
234  if ((ret = avio_read(s->pb, temp, length)) < 0)
235  return ret;
236 
237  temp[length] = 0;
238 
239  if (strlen(temp))
240  return av_dict_set(&s->metadata, key, temp, 0);
241 
242  return 0;
243 }
244 
245 static int wav_parse_bext_tag(AVFormatContext *s, int64_t size)
246 {
247  char temp[131], *coding_history;
248  int ret, x;
249  uint64_t time_reference;
250  int64_t umid_parts[8], umid_mask = 0;
251 
252  if ((ret = wav_parse_bext_string(s, "description", 256)) < 0 ||
253  (ret = wav_parse_bext_string(s, "originator", 32)) < 0 ||
254  (ret = wav_parse_bext_string(s, "originator_reference", 32)) < 0 ||
255  (ret = wav_parse_bext_string(s, "origination_date", 10)) < 0 ||
256  (ret = wav_parse_bext_string(s, "origination_time", 8)) < 0)
257  return ret;
258 
259  time_reference = avio_rl64(s->pb);
260  snprintf(temp, sizeof(temp), "%"PRIu64, time_reference);
261  if ((ret = av_dict_set(&s->metadata, "time_reference", temp, 0)) < 0)
262  return ret;
263 
264  /* check if version is >= 1, in which case an UMID may be present */
265  if (avio_rl16(s->pb) >= 1) {
266  for (x = 0; x < 8; x++)
267  umid_mask |= umid_parts[x] = avio_rb64(s->pb);
268 
269  if (umid_mask) {
270  /* the string formatting below is per SMPTE 330M-2004 Annex C */
271  if (umid_parts[4] == 0 && umid_parts[5] == 0 &&
272  umid_parts[6] == 0 && umid_parts[7] == 0) {
273  /* basic UMID */
274  snprintf(temp, sizeof(temp),
275  "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
276  umid_parts[0], umid_parts[1],
277  umid_parts[2], umid_parts[3]);
278  } else {
279  /* extended UMID */
280  snprintf(temp, sizeof(temp),
281  "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64
282  "%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
283  umid_parts[0], umid_parts[1],
284  umid_parts[2], umid_parts[3],
285  umid_parts[4], umid_parts[5],
286  umid_parts[6], umid_parts[7]);
287  }
288 
289  if ((ret = av_dict_set(&s->metadata, "umid", temp, 0)) < 0)
290  return ret;
291  }
292 
293  avio_skip(s->pb, 190);
294  } else
295  avio_skip(s->pb, 254);
296 
297  if (size > 602) {
298  /* CodingHistory present */
299  size -= 602;
300 
301  if (!(coding_history = av_malloc(size + 1)))
302  return AVERROR(ENOMEM);
303 
304  if ((ret = avio_read(s->pb, coding_history, size)) < 0)
305  return ret;
306 
307  coding_history[size] = 0;
308  if ((ret = av_dict_set(&s->metadata, "coding_history", coding_history,
310  return ret;
311  }
312 
313  return 0;
314 }
315 
316 static const AVMetadataConv wav_metadata_conv[] = {
317  { "description", "comment" },
318  { "originator", "encoded_by" },
319  { "origination_date", "date" },
320  { "origination_time", "creation_time" },
321  { 0 },
322 };
323 
324 /* wav input */
325 static int wav_read_header(AVFormatContext *s)
326 {
327  int64_t size, av_uninit(data_size);
328  int64_t sample_count = 0;
329  int rf64 = 0;
330  char start_code[32];
331  uint32_t tag;
332  AVIOContext *pb = s->pb;
333  AVStream *st = NULL;
334  WAVDemuxContext *wav = s->priv_data;
335  int ret, got_fmt = 0, got_xma2 = 0;
336  int64_t next_tag_ofs, data_ofs = -1;
337 
338  wav->unaligned = avio_tell(s->pb) & 1;
339 
340  wav->smv_data_ofs = -1;
341 
342  /* read chunk ID */
343  tag = avio_rl32(pb);
344  switch (tag) {
345  case MKTAG('R', 'I', 'F', 'F'):
346  break;
347  case MKTAG('R', 'I', 'F', 'X'):
348  wav->rifx = 1;
349  break;
350  case MKTAG('R', 'F', '6', '4'):
351  rf64 = 1;
352  break;
353  default:
354  av_get_codec_tag_string(start_code, sizeof(start_code), tag);
355  av_log(s, AV_LOG_ERROR, "invalid start code %s in RIFF header\n", start_code);
356  return AVERROR_INVALIDDATA;
357  }
358 
359  /* read chunk size */
360  avio_rl32(pb);
361 
362  /* read format */
363  if (avio_rl32(pb) != MKTAG('W', 'A', 'V', 'E')) {
364  av_log(s, AV_LOG_ERROR, "invalid format in RIFF header\n");
365  return AVERROR_INVALIDDATA;
366  }
367 
368  if (rf64) {
369  if (avio_rl32(pb) != MKTAG('d', 's', '6', '4'))
370  return AVERROR_INVALIDDATA;
371  size = avio_rl32(pb);
372  if (size < 24)
373  return AVERROR_INVALIDDATA;
374  avio_rl64(pb); /* RIFF size */
375 
376  data_size = avio_rl64(pb);
377  sample_count = avio_rl64(pb);
378 
379  if (data_size < 0 || sample_count < 0) {
380  av_log(s, AV_LOG_ERROR, "negative data_size and/or sample_count in "
381  "ds64: data_size = %"PRId64", sample_count = %"PRId64"\n",
382  data_size, sample_count);
383  return AVERROR_INVALIDDATA;
384  }
385  avio_skip(pb, size - 24); /* skip rest of ds64 chunk */
386 
387  }
388 
389  for (;;) {
390  AVStream *vst;
391  size = next_tag(pb, &tag, wav->rifx);
392  next_tag_ofs = avio_tell(pb) + size;
393 
394  if (avio_feof(pb))
395  break;
396 
397  switch (tag) {
398  case MKTAG('f', 'm', 't', ' '):
399  /* only parse the first 'fmt ' tag found */
400  if (!got_xma2 && !got_fmt && (ret = wav_parse_fmt_tag(s, size, &st)) < 0) {
401  return ret;
402  } else if (got_fmt)
403  av_log(s, AV_LOG_WARNING, "found more than one 'fmt ' tag\n");
404 
405  got_fmt = 1;
406  break;
407  case MKTAG('X', 'M', 'A', '2'):
408  /* only parse the first 'XMA2' tag found */
409  if (!got_fmt && !got_xma2 && (ret = wav_parse_xma2_tag(s, size, &st)) < 0) {
410  return ret;
411  } else if (got_xma2)
412  av_log(s, AV_LOG_WARNING, "found more than one 'XMA2' tag\n");
413 
414  got_xma2 = 1;
415  break;
416  case MKTAG('d', 'a', 't', 'a'):
417  if (!pb->seekable && !got_fmt && !got_xma2) {
418  av_log(s, AV_LOG_ERROR,
419  "found no 'fmt ' tag before the 'data' tag\n");
420  return AVERROR_INVALIDDATA;
421  }
422 
423  if (rf64) {
424  next_tag_ofs = wav->data_end = avio_tell(pb) + data_size;
425  } else if (size != 0xFFFFFFFF) {
426  data_size = size;
427  next_tag_ofs = wav->data_end = size ? next_tag_ofs : INT64_MAX;
428  } else {
429  av_log(s, AV_LOG_WARNING, "Ignoring maximum wav data size, "
430  "file may be invalid\n");
431  data_size = 0;
432  next_tag_ofs = wav->data_end = INT64_MAX;
433  }
434 
435  data_ofs = avio_tell(pb);
436 
437  /* don't look for footer metadata if we can't seek or if we don't
438  * know where the data tag ends
439  */
440  if (!pb->seekable || (!rf64 && !size))
441  goto break_loop;
442  break;
443  case MKTAG('f', 'a', 'c', 't'):
444  if (!sample_count)
445  sample_count = (!wav->rifx ? avio_rl32(pb) : avio_rb32(pb));
446  break;
447  case MKTAG('b', 'e', 'x', 't'):
448  if ((ret = wav_parse_bext_tag(s, size)) < 0)
449  return ret;
450  break;
451  case MKTAG('S','M','V','0'):
452  if (!got_fmt) {
453  av_log(s, AV_LOG_ERROR, "found no 'fmt ' tag before the 'SMV0' tag\n");
454  return AVERROR_INVALIDDATA;
455  }
456  // SMV file, a wav file with video appended.
457  if (size != MKTAG('0','2','0','0')) {
458  av_log(s, AV_LOG_ERROR, "Unknown SMV version found\n");
459  goto break_loop;
460  }
461  av_log(s, AV_LOG_DEBUG, "Found SMV data\n");
462  wav->smv_given_first = 0;
463  vst = avformat_new_stream(s, NULL);
464  if (!vst)
465  return AVERROR(ENOMEM);
466  avio_r8(pb);
467  vst->id = 1;
470  vst->codecpar->width = avio_rl24(pb);
471  vst->codecpar->height = avio_rl24(pb);
472  if (ff_alloc_extradata(vst->codecpar, 4)) {
473  av_log(s, AV_LOG_ERROR, "Could not allocate extradata.\n");
474  return AVERROR(ENOMEM);
475  }
476  size = avio_rl24(pb);
477  wav->smv_data_ofs = avio_tell(pb) + (size - 5) * 3;
478  avio_rl24(pb);
479  wav->smv_block_size = avio_rl24(pb);
480  avpriv_set_pts_info(vst, 32, 1, avio_rl24(pb));
481  vst->duration = avio_rl24(pb);
482  avio_rl24(pb);
483  avio_rl24(pb);
484  wav->smv_frames_per_jpeg = avio_rl24(pb);
485  if (wav->smv_frames_per_jpeg > 65536) {
486  av_log(s, AV_LOG_ERROR, "too many frames per jpeg\n");
487  return AVERROR_INVALIDDATA;
488  }
490  wav->smv_cur_pt = 0;
491  goto break_loop;
492  case MKTAG('L', 'I', 'S', 'T'):
493  if (size < 4) {
494  av_log(s, AV_LOG_ERROR, "too short LIST tag\n");
495  return AVERROR_INVALIDDATA;
496  }
497  switch (avio_rl32(pb)) {
498  case MKTAG('I', 'N', 'F', 'O'):
499  ff_read_riff_info(s, size - 4);
500  }
501  break;
502  }
503 
504  /* seek to next tag unless we know that we'll run into EOF */
505  if ((avio_size(pb) > 0 && next_tag_ofs >= avio_size(pb)) ||
506  wav_seek_tag(wav, pb, next_tag_ofs, SEEK_SET) < 0) {
507  break;
508  }
509  }
510 
511 break_loop:
512  if (!got_fmt && !got_xma2) {
513  av_log(s, AV_LOG_ERROR, "no 'fmt ' or 'XMA2' tag found\n");
514  return AVERROR_INVALIDDATA;
515  }
516 
517  if (data_ofs < 0) {
518  av_log(s, AV_LOG_ERROR, "no 'data' tag found\n");
519  return AVERROR_INVALIDDATA;
520  }
521 
522  avio_seek(pb, data_ofs, SEEK_SET);
523 
524  if (data_size > (INT64_MAX>>3)) {
525  av_log(s, AV_LOG_WARNING, "Data size %"PRId64" is too large\n", data_size);
526  data_size = 0;
527  }
528 
529  if ( st->codecpar->bit_rate > 0 && data_size > 0
530  && st->codecpar->sample_rate > 0
531  && sample_count > 0 && st->codecpar->channels > 1
532  && sample_count % st->codecpar->channels == 0) {
533  if (fabs(8.0 * data_size * st->codecpar->channels * st->codecpar->sample_rate /
534  sample_count /st->codecpar->bit_rate - 1.0) < 0.3)
535  sample_count /= st->codecpar->channels;
536  }
537 
538  if ( data_size > 0 && sample_count && st->codecpar->channels
539  && (data_size << 3) / sample_count / st->codecpar->channels > st->codecpar->bits_per_coded_sample + 1) {
540  av_log(s, AV_LOG_WARNING, "ignoring wrong sample_count %"PRId64"\n", sample_count);
541  sample_count = 0;
542  }
543 
544  /* G.729 hack (for Ticket4577)
545  * FIXME: Come up with cleaner, more general solution */
546  if (st->codecpar->codec_id == AV_CODEC_ID_G729 && sample_count && (data_size << 3) > sample_count) {
547  av_log(s, AV_LOG_WARNING, "ignoring wrong sample_count %"PRId64"\n", sample_count);
548  sample_count = 0;
549  }
550 
551  if (!sample_count || av_get_exact_bits_per_sample(st->codecpar->codec_id) > 0)
552  if ( st->codecpar->channels
553  && data_size
555  && wav->data_end <= avio_size(pb))
556  sample_count = (data_size << 3)
557  /
558  (st->codecpar->channels * (uint64_t)av_get_bits_per_sample(st->codecpar->codec_id));
559 
560  if (sample_count)
561  st->duration = sample_count;
562 
563  ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
565 
566  set_spdif(s, wav);
567 
568  return 0;
569 }
570 
571 /**
572  * Find chunk with w64 GUID by skipping over other chunks.
573  * @return the size of the found chunk
574  */
575 static int64_t find_guid(AVIOContext *pb, const uint8_t guid1[16])
576 {
577  uint8_t guid[16];
578  int64_t size;
579 
580  while (!avio_feof(pb)) {
581  avio_read(pb, guid, 16);
582  size = avio_rl64(pb);
583  if (size <= 24)
584  return AVERROR_INVALIDDATA;
585  if (!memcmp(guid, guid1, 16))
586  return size;
587  avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24);
588  }
589  return AVERROR_EOF;
590 }
591 
592 #define MAX_SIZE 4096
593 
594 static int wav_read_packet(AVFormatContext *s, AVPacket *pkt)
595 {
596  int ret, size;
597  int64_t left;
598  AVStream *st;
599  WAVDemuxContext *wav = s->priv_data;
600 
601  if (CONFIG_SPDIF_DEMUXER && wav->spdif == 1)
602  return ff_spdif_read_packet(s, pkt);
603 
604  if (wav->smv_data_ofs > 0) {
605  int64_t audio_dts, video_dts;
606 smv_retry:
607  audio_dts = (int32_t)s->streams[0]->cur_dts;
608  video_dts = (int32_t)s->streams[1]->cur_dts;
609 
610  if (audio_dts != AV_NOPTS_VALUE && video_dts != AV_NOPTS_VALUE) {
611  /*We always return a video frame first to get the pixel format first*/
612  wav->smv_last_stream = wav->smv_given_first ?
613  av_compare_ts(video_dts, s->streams[1]->time_base,
614  audio_dts, s->streams[0]->time_base) > 0 : 0;
615  wav->smv_given_first = 1;
616  }
617  wav->smv_last_stream = !wav->smv_last_stream;
618  wav->smv_last_stream |= wav->audio_eof;
619  wav->smv_last_stream &= !wav->smv_eof;
620  if (wav->smv_last_stream) {
621  uint64_t old_pos = avio_tell(s->pb);
622  uint64_t new_pos = wav->smv_data_ofs +
623  wav->smv_block * wav->smv_block_size;
624  if (avio_seek(s->pb, new_pos, SEEK_SET) < 0) {
625  ret = AVERROR_EOF;
626  goto smv_out;
627  }
628  size = avio_rl24(s->pb);
629  ret = av_get_packet(s->pb, pkt, size);
630  if (ret < 0)
631  goto smv_out;
632  pkt->pos -= 3;
633  pkt->pts = wav->smv_block * wav->smv_frames_per_jpeg + wav->smv_cur_pt;
634  wav->smv_cur_pt++;
635  if (wav->smv_frames_per_jpeg > 0)
636  wav->smv_cur_pt %= wav->smv_frames_per_jpeg;
637  if (!wav->smv_cur_pt)
638  wav->smv_block++;
639 
640  pkt->stream_index = 1;
641 smv_out:
642  avio_seek(s->pb, old_pos, SEEK_SET);
643  if (ret == AVERROR_EOF) {
644  wav->smv_eof = 1;
645  goto smv_retry;
646  }
647  return ret;
648  }
649  }
650 
651  st = s->streams[0];
652 
653  left = wav->data_end - avio_tell(s->pb);
654  if (wav->ignore_length)
655  left = INT_MAX;
656  if (left <= 0) {
657  if (CONFIG_W64_DEMUXER && wav->w64)
658  left = find_guid(s->pb, ff_w64_guid_data) - 24;
659  else
660  left = find_tag(wav, s->pb, MKTAG('d', 'a', 't', 'a'));
661  if (left < 0) {
662  wav->audio_eof = 1;
663  if (wav->smv_data_ofs > 0 && !wav->smv_eof)
664  goto smv_retry;
665  return AVERROR_EOF;
666  }
667  wav->data_end = avio_tell(s->pb) + left;
668  }
669 
670  size = MAX_SIZE;
671  if (st->codecpar->block_align > 1) {
672  if (size < st->codecpar->block_align)
673  size = st->codecpar->block_align;
674  size = (size / st->codecpar->block_align) * st->codecpar->block_align;
675  }
676  size = FFMIN(size, left);
677  ret = av_get_packet(s->pb, pkt, size);
678  if (ret < 0)
679  return ret;
680  pkt->stream_index = 0;
681 
682  return ret;
683 }
684 
685 static int wav_read_seek(AVFormatContext *s,
686  int stream_index, int64_t timestamp, int flags)
687 {
688  WAVDemuxContext *wav = s->priv_data;
689  AVStream *st;
690  wav->smv_eof = 0;
691  wav->audio_eof = 0;
692  if (wav->smv_data_ofs > 0) {
693  int64_t smv_timestamp = timestamp;
694  if (stream_index == 0)
695  smv_timestamp = av_rescale_q(timestamp, s->streams[0]->time_base, s->streams[1]->time_base);
696  else
697  timestamp = av_rescale_q(smv_timestamp, s->streams[1]->time_base, s->streams[0]->time_base);
698  if (wav->smv_frames_per_jpeg > 0) {
699  wav->smv_block = smv_timestamp / wav->smv_frames_per_jpeg;
700  wav->smv_cur_pt = smv_timestamp % wav->smv_frames_per_jpeg;
701  }
702  }
703 
704  st = s->streams[0];
705  switch (st->codecpar->codec_id) {
706  case AV_CODEC_ID_MP2:
707  case AV_CODEC_ID_MP3:
708  case AV_CODEC_ID_AC3:
709  case AV_CODEC_ID_DTS:
710  /* use generic seeking with dynamically generated indexes */
711  return -1;
712  default:
713  break;
714  }
715  return ff_pcm_read_seek(s, stream_index, timestamp, flags);
716 }
717 
718 #define OFFSET(x) offsetof(WAVDemuxContext, x)
719 #define DEC AV_OPT_FLAG_DECODING_PARAM
720 static const AVOption demux_options[] = {
721  { "ignore_length", "Ignore length", OFFSET(ignore_length), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, DEC },
722  { NULL },
723 };
724 
725 static const AVClass wav_demuxer_class = {
726  .class_name = "WAV demuxer",
727  .item_name = av_default_item_name,
728  .option = demux_options,
729  .version = LIBAVUTIL_VERSION_INT,
730 };
731 AVInputFormat ff_wav_demuxer = {
732  .name = "wav",
733  .long_name = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"),
734  .priv_data_size = sizeof(WAVDemuxContext),
735  .read_probe = wav_probe,
736  .read_header = wav_read_header,
737  .read_packet = wav_read_packet,
738  .read_seek = wav_read_seek,
739  .flags = AVFMT_GENERIC_INDEX,
740  .codec_tag = (const AVCodecTag * const []) { ff_codec_wav_tags, 0 },
741  .priv_class = &wav_demuxer_class,
742 };
743 #endif /* CONFIG_WAV_DEMUXER */
744 
745 #if CONFIG_W64_DEMUXER
746 static int w64_probe(AVProbeData *p)
747 {
748  if (p->buf_size <= 40)
749  return 0;
750  if (!memcmp(p->buf, ff_w64_guid_riff, 16) &&
751  !memcmp(p->buf + 24, ff_w64_guid_wave, 16))
752  return AVPROBE_SCORE_MAX;
753  else
754  return 0;
755 }
756 
757 static int w64_read_header(AVFormatContext *s)
758 {
759  int64_t size, data_ofs = 0;
760  AVIOContext *pb = s->pb;
761  WAVDemuxContext *wav = s->priv_data;
762  AVStream *st;
763  uint8_t guid[16];
764  int ret;
765 
766  avio_read(pb, guid, 16);
767  if (memcmp(guid, ff_w64_guid_riff, 16))
768  return AVERROR_INVALIDDATA;
769 
770  /* riff + wave + fmt + sizes */
771  if (avio_rl64(pb) < 16 + 8 + 16 + 8 + 16 + 8)
772  return AVERROR_INVALIDDATA;
773 
774  avio_read(pb, guid, 16);
775  if (memcmp(guid, ff_w64_guid_wave, 16)) {
776  av_log(s, AV_LOG_ERROR, "could not find wave guid\n");
777  return AVERROR_INVALIDDATA;
778  }
779 
780  wav->w64 = 1;
781 
782  st = avformat_new_stream(s, NULL);
783  if (!st)
784  return AVERROR(ENOMEM);
785 
786  while (!avio_feof(pb)) {
787  if (avio_read(pb, guid, 16) != 16)
788  break;
789  size = avio_rl64(pb);
790  if (size <= 24 || INT64_MAX - size < avio_tell(pb))
791  return AVERROR_INVALIDDATA;
792 
793  if (!memcmp(guid, ff_w64_guid_fmt, 16)) {
794  /* subtract chunk header size - normal wav file doesn't count it */
795  ret = ff_get_wav_header(s, pb, st->codecpar, size - 24, 0);
796  if (ret < 0)
797  return ret;
798  avio_skip(pb, FFALIGN(size, INT64_C(8)) - size);
799 
800  avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
801  } else if (!memcmp(guid, ff_w64_guid_fact, 16)) {
802  int64_t samples;
803 
804  samples = avio_rl64(pb);
805  if (samples > 0)
806  st->duration = samples;
807  } else if (!memcmp(guid, ff_w64_guid_data, 16)) {
808  wav->data_end = avio_tell(pb) + size - 24;
809 
810  data_ofs = avio_tell(pb);
811  if (!pb->seekable)
812  break;
813 
814  avio_skip(pb, size - 24);
815  } else if (!memcmp(guid, ff_w64_guid_summarylist, 16)) {
816  int64_t start, end, cur;
817  uint32_t count, chunk_size, i;
818 
819  start = avio_tell(pb);
820  end = start + FFALIGN(size, INT64_C(8)) - 24;
821  count = avio_rl32(pb);
822 
823  for (i = 0; i < count; i++) {
824  char chunk_key[5], *value;
825 
826  if (avio_feof(pb) || (cur = avio_tell(pb)) < 0 || cur > end - 8 /* = tag + size */)
827  break;
828 
829  chunk_key[4] = 0;
830  avio_read(pb, chunk_key, 4);
831  chunk_size = avio_rl32(pb);
832 
833  value = av_mallocz(chunk_size + 1);
834  if (!value)
835  return AVERROR(ENOMEM);
836 
837  ret = avio_get_str16le(pb, chunk_size, value, chunk_size);
838  avio_skip(pb, chunk_size - ret);
839 
840  av_dict_set(&s->metadata, chunk_key, value, AV_DICT_DONT_STRDUP_VAL);
841  }
842 
843  avio_skip(pb, end - avio_tell(pb));
844  } else {
845  av_log(s, AV_LOG_DEBUG, "unknown guid: "FF_PRI_GUID"\n", FF_ARG_GUID(guid));
846  avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24);
847  }
848  }
849 
850  if (!data_ofs)
851  return AVERROR_EOF;
852 
853  ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
855 
856  handle_stream_probing(st);
858 
859  avio_seek(pb, data_ofs, SEEK_SET);
860 
861  set_spdif(s, wav);
862 
863  return 0;
864 }
865 
866 AVInputFormat ff_w64_demuxer = {
867  .name = "w64",
868  .long_name = NULL_IF_CONFIG_SMALL("Sony Wave64"),
869  .priv_data_size = sizeof(WAVDemuxContext),
870  .read_probe = w64_probe,
871  .read_header = w64_read_header,
872  .read_packet = wav_read_packet,
873  .read_seek = wav_read_seek,
874  .flags = AVFMT_GENERIC_INDEX,
875  .codec_tag = (const AVCodecTag * const []) { ff_codec_wav_tags, 0 },
876 };
877 #endif /* CONFIG_W64_DEMUXER */
int ff_read_riff_info(AVFormatContext *s, int64_t size)
Definition: riffdec.c:226
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:768
Bytestream IO Context.
Definition: avio.h:147
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
int64_t video_dts
Definition: movenc.c:60
void ff_metadata_conv_ctx(AVFormatContext *ctx, const AVMetadataConv *d_conv, const AVMetadataConv *s_conv)
Definition: metadata.c:59
int64_t avio_size(AVIOContext *s)
Get the filesize.
Definition: aviobuf.c:309
const uint8_t ff_w64_guid_wave[16]
Definition: w64.c:28
Buffered I/O operations.
int ff_spdif_probe(const uint8_t *p_buf, int buf_size, enum AVCodecID *codec)
Definition: spdifdec.c:112
AVOption.
Definition: opt.h:245
const uint8_t ff_w64_guid_fact[16]
Definition: w64.c:38
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
int64_t pos
byte position in stream, -1 if unknown
Definition: avcodec.h:1621
else temp
Definition: vf_mcdeint.c:259
#define FF_ARG_GUID(g)
Definition: riff.h:102
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:4560
int probe_packets
Number of packets to buffer for codec probing.
Definition: avformat.h:1068
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3980
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:230
int smv_frames_per_jpeg
Definition: wavdec.c:50
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:304
static void set_spdif(AVFormatContext *s, WAVDemuxContext *wav)
Definition: wavdec.c:63
size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
Put a string representing the codec tag codec_tag in buf.
Definition: utils.c:3166
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:252
static AVPacket pkt
#define MAX_SIZE
Definition: vf_unsharp.c:269
int avio_get_str16le(AVIOContext *pb, int maxlen, char *buf, int buflen)
Read a UTF-16 string from pb and convert it to UTF-8.
int ignore_length
Definition: wavdec.c:55
Format I/O context.
Definition: avformat.h:1338
static const GUIDParseTable * find_guid(ff_asf_guid guid)
Definition: asfdec_o.c:1652
int64_t audio_dts
Definition: movenc.c:60
int64_t cur_dts
Definition: avformat.h:1061
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
internal metadata API header see avformat.h or the public API!
Public dictionary API.
uint8_t
#define av_malloc(s)
int width
Video only.
Definition: avcodec.h:4046
AVOptions.
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:757
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
enum AVStreamParseType need_parsing
Definition: avformat.h:1076
int id
Format-specific stream ID.
Definition: avformat.h:896
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4193
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1406
uint32_t tag
Definition: movenc.c:1382
#define AVERROR_EOF
End of file.
Definition: error.h:55
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:289
ptrdiff_t size
Definition: opengl_enc.c:101
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:824
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:511
#define FFALIGN(x, a)
Definition: macros.h:48
full parsing and repack with timestamp and position generation by parser for raw this assumes that ea...
Definition: avformat.h:814
#define av_log(a,...)
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:604
int ff_get_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int size, int big_endian)
Definition: riffdec.c:88
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: avcodec.h:4009
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
int ff_spdif_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: spdifdec.c:169
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:191
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:3535
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1554
av_default_item_name
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:726
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
preferred ID for decoding MPEG audio layer 1, 2 or 3
Definition: avcodec.h:517
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3976
simple assert() macros that are a bit more flexible than ISO C assert().
GLsizei GLsizei * length
Definition: opengl_enc.c:115
int smv_block_size
Definition: wavdec.c:49
int smv_cur_pt
Definition: wavdec.c:57
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
GLsizei count
Definition: opengl_enc.c:109
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:436
int av_compare_ts(int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b)
Compare two timestamps each in its own time base.
Definition: mathematics.c:147
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:595
return
int buf_size
Size of buf except extra allocated bytes.
Definition: avformat.h:464
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:463
int block_align
Audio only.
Definition: avcodec.h:4097
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:243
int ff_alloc_extradata(AVCodecParameters *par, int size)
Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0...
Definition: utils.c:3175
#define FFMIN(a, b)
Definition: common.h:96
int smv_last_stream
Definition: wavdec.c:52
int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:3455
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that's been allocated with av_malloc() or another memory allocation functio...
Definition: dict.h:76
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:55
static const uint8_t start_code[]
Definition: h264dec.c:657
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
const uint8_t ff_w64_guid_data[16]
Definition: w64.c:42
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
int32_t
const uint8_t ff_w64_guid_riff[16]
Definition: w64.c:23
int audio_eof
Definition: wavdec.c:54
int ff_pcm_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Definition: pcm.c:45
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:514
Stream structure.
Definition: avformat.h:889
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
AVIOContext * pb
I/O context.
Definition: avformat.h:1380
void * buf
Definition: avisynth_c.h:690
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
Describe the class of an AVClass context structure.
Definition: log.h:67
#define AVFMT_GENERIC_INDEX
Use generic index building code.
Definition: avformat.h:487
#define DEC
Definition: tta.c:411
int64_t smv_data_ofs
Definition: wavdec.c:48
#define snprintf
Definition: snprintf.h:34
#define AVPROBE_SCORE_EXTENSION
score for file extension
Definition: avformat.h:471
This structure contains the data a format has to probe a file.
Definition: avformat.h:461
const AVMetadataConv ff_riff_info_conv[]
Definition: riff.c:520
static int flags
Definition: cpu.c:47
const uint8_t ff_w64_guid_fmt[16]
Definition: w64.c:33
#define OFFSET(x)
Definition: ffmpeg_opt.c:3228
int ffio_ensure_seekback(AVIOContext *s, int64_t buf_size)
Ensures that the requested seekback buffer size will be available.
Definition: aviobuf.c:930
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:943
int sample_rate
Audio only.
Definition: avcodec.h:4090
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:473
int smv_given_first
Definition: wavdec.c:58
unsigned int avio_rl16(AVIOContext *s)
Definition: aviobuf.c:710
Main libavformat public API header.
if(ret< 0)
Definition: vf_mcdeint.c:282
#define FF_PRI_GUID
Definition: riff.h:98
int64_t data_end
Definition: wavdec.c:46
#define av_free(p)
int smv_block
Definition: wavdec.c:51
int len
void * priv_data
Format private data.
Definition: avformat.h:1366
const uint8_t ff_w64_guid_summarylist[16]
Definition: w64.c:47
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: avcodec.h:4022
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: avcodec.h:3994
int channels
Audio only.
Definition: avcodec.h:4086
#define av_uninit(x)
Definition: attributes.h:149
void INT64 start
Definition: avisynth_c.h:690
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:664
AVCodecParameters * codecpar
Definition: avformat.h:1241
int avio_feof(AVIOContext *s)
feof() equivalent for AVIOContext.
Definition: aviobuf.c:328
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:3984
unsigned int avio_rl24(AVIOContext *s)
Definition: aviobuf.c:718
int stream_index
Definition: avcodec.h:1603
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:926
#define MKTAG(a, b, c, d)
Definition: common.h:342
int request_probe
stream probing state -1 -> probing finished 0 -> no probing requested rest -> perform probing with re...
Definition: avformat.h:1122
This structure stores compressed data.
Definition: avcodec.h:1578
uint64_t avio_rl64(AVIOContext *s)
Definition: aviobuf.c:734
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1594
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:242
int unaligned
Definition: wavdec.c:59
#define AV_WL32(p, v)
Definition: intreadwrite.h:426