FFmpeg  4.3
wavenc.c
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1 /*
2  * WAV muxer
3  * Copyright (c) 2001, 2002 Fabrice Bellard
4  *
5  * Sony Wave64 muxer
6  * Copyright (c) 2012 Paul B Mahol
7  *
8  * WAV muxer RF64 support
9  * Copyright (c) 2013 Daniel Verkamp <daniel@drv.nu>
10  *
11  * EBU Tech 3285 - Supplement 3 - Peak Envelope Chunk encoder
12  * Copyright (c) 2014 Georg Lippitsch <georg.lippitsch@gmx.at>
13  *
14  * This file is part of FFmpeg.
15  *
16  * FFmpeg is free software; you can redistribute it and/or
17  * modify it under the terms of the GNU Lesser General Public
18  * License as published by the Free Software Foundation; either
19  * version 2.1 of the License, or (at your option) any later version.
20  *
21  * FFmpeg is distributed in the hope that it will be useful,
22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
24  * Lesser General Public License for more details.
25  *
26  * You should have received a copy of the GNU Lesser General Public
27  * License along with FFmpeg; if not, write to the Free Software
28  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29  */
30 
31 #include <stdint.h>
32 #include <string.h>
33 
34 #include "libavutil/avstring.h"
35 #include "libavutil/dict.h"
36 #include "libavutil/common.h"
37 #include "libavutil/intreadwrite.h"
38 #include "libavutil/mathematics.h"
39 #include "libavutil/opt.h"
40 #include "libavutil/time.h"
42 
43 #include "avformat.h"
44 #include "avio.h"
45 #include "avio_internal.h"
46 #include "internal.h"
47 #include "riff.h"
48 
49 #define RF64_AUTO (-1)
50 #define RF64_NEVER 0
51 #define RF64_ALWAYS 1
52 
53 #define PEAK_BUFFER_SIZE 1024
54 
55 typedef enum {
56  PEAK_OFF = 0,
59 } PeakType;
60 
61 typedef enum {
64 } PeakFormat;
65 
66 typedef struct WAVMuxContext {
67  const AVClass *class;
68  int64_t data;
69  int64_t fact_pos;
70  int64_t ds64;
71  int64_t minpts;
72  int64_t maxpts;
74  uint32_t peak_num_frames;
75  uint32_t peak_outbuf_size;
81  int rf64;
85  int peak_ppv;
86  int peak_bps;
88 
89 #if CONFIG_WAV_MUXER
90 static inline void bwf_write_bext_string(AVFormatContext *s, const char *key, int maxlen)
91 {
93  size_t len = 0;
94 
95  if (tag = av_dict_get(s->metadata, key, NULL, 0)) {
96  len = strlen(tag->value);
97  len = FFMIN(len, maxlen);
98  avio_write(s->pb, tag->value, len);
99  }
100 
101  ffio_fill(s->pb, 0, maxlen - len);
102 }
103 
104 static void bwf_write_bext_chunk(AVFormatContext *s)
105 {
106  AVDictionaryEntry *tmp_tag;
107  uint64_t time_reference = 0;
108  int64_t bext = ff_start_tag(s->pb, "bext");
109 
110  bwf_write_bext_string(s, "description", 256);
111  bwf_write_bext_string(s, "originator", 32);
112  bwf_write_bext_string(s, "originator_reference", 32);
113  bwf_write_bext_string(s, "origination_date", 10);
114  bwf_write_bext_string(s, "origination_time", 8);
115 
116  if (tmp_tag = av_dict_get(s->metadata, "time_reference", NULL, 0))
117  time_reference = strtoll(tmp_tag->value, NULL, 10);
118  avio_wl64(s->pb, time_reference);
119  avio_wl16(s->pb, 1); // set version to 1
120 
121  if ((tmp_tag = av_dict_get(s->metadata, "umid", NULL, 0)) && strlen(tmp_tag->value) > 2) {
122  unsigned char umidpart_str[17] = {0};
123  int64_t i;
124  uint64_t umidpart;
125  size_t len = strlen(tmp_tag->value+2);
126 
127  for (i = 0; i < len/16; i++) {
128  memcpy(umidpart_str, tmp_tag->value + 2 + (i*16), 16);
129  umidpart = strtoll(umidpart_str, NULL, 16);
130  avio_wb64(s->pb, umidpart);
131  }
132  ffio_fill(s->pb, 0, 64 - i*8);
133  } else
134  ffio_fill(s->pb, 0, 64); // zero UMID
135 
136  ffio_fill(s->pb, 0, 190); // Reserved
137 
138  if (tmp_tag = av_dict_get(s->metadata, "coding_history", NULL, 0))
139  avio_put_str(s->pb, tmp_tag->value);
140 
141  ff_end_tag(s->pb, bext);
142 }
143 
144 static av_cold void wav_deinit(AVFormatContext *s)
145 {
146  WAVMuxContext *wav = s->priv_data;
147 
148  av_freep(&wav->peak_maxpos);
149  av_freep(&wav->peak_maxneg);
150  av_freep(&wav->peak_output);
151 }
152 
153 static av_cold int peak_init_writer(AVFormatContext *s)
154 {
155  WAVMuxContext *wav = s->priv_data;
156  AVCodecParameters *par = s->streams[0]->codecpar;
157 
158  if (par->codec_id != AV_CODEC_ID_PCM_S8 &&
160  par->codec_id != AV_CODEC_ID_PCM_U8 &&
163  av_log(s, AV_LOG_ERROR, "%s codec not supported for Peak Chunk\n",
164  codec ? codec->name : "NONE");
165  return -1;
166  }
167 
168  wav->peak_bps = av_get_bits_per_sample(par->codec_id) / 8;
169 
170  if (wav->peak_bps == 1 && wav->peak_format == PEAK_FORMAT_UINT16) {
171  av_log(s, AV_LOG_ERROR,
172  "Writing 16 bit peak for 8 bit audio does not make sense\n");
173  return AVERROR(EINVAL);
174  }
175 
176  wav->peak_maxpos = av_mallocz_array(par->channels, sizeof(*wav->peak_maxpos));
177  wav->peak_maxneg = av_mallocz_array(par->channels, sizeof(*wav->peak_maxneg));
179  if (!wav->peak_maxpos || !wav->peak_maxneg || !wav->peak_output)
180  goto nomem;
181 
183 
184  return 0;
185 
186 nomem:
187  av_log(s, AV_LOG_ERROR, "Out of memory\n");
188  return AVERROR(ENOMEM);
189 }
190 
191 static void peak_write_frame(AVFormatContext *s)
192 {
193  WAVMuxContext *wav = s->priv_data;
194  AVCodecParameters *par = s->streams[0]->codecpar;
195  int c;
196 
197  if (!wav->peak_output)
198  return;
199 
200  for (c = 0; c < par->channels; c++) {
201  wav->peak_maxneg[c] = -wav->peak_maxneg[c];
202 
203  if (wav->peak_bps == 2 && wav->peak_format == PEAK_FORMAT_UINT8) {
204  wav->peak_maxpos[c] = wav->peak_maxpos[c] / 256;
205  wav->peak_maxneg[c] = wav->peak_maxneg[c] / 256;
206  }
207 
208  if (wav->peak_ppv == 1)
209  wav->peak_maxpos[c] =
210  FFMAX(wav->peak_maxpos[c], wav->peak_maxneg[c]);
211 
212  if (wav->peak_outbuf_size - wav->peak_outbuf_bytes <
213  wav->peak_format * wav->peak_ppv) {
215  wav->peak_output = av_realloc(wav->peak_output,
216  wav->peak_outbuf_size);
217  if (!wav->peak_output) {
218  av_log(s, AV_LOG_ERROR, "No memory for peak data\n");
219  return;
220  }
221  }
222 
223  if (wav->peak_format == PEAK_FORMAT_UINT8) {
224  wav->peak_output[wav->peak_outbuf_bytes++] =
225  wav->peak_maxpos[c];
226  if (wav->peak_ppv == 2) {
227  wav->peak_output[wav->peak_outbuf_bytes++] =
228  wav->peak_maxneg[c];
229  }
230  } else {
232  wav->peak_maxpos[c]);
233  wav->peak_outbuf_bytes += 2;
234  if (wav->peak_ppv == 2) {
236  wav->peak_maxneg[c]);
237  wav->peak_outbuf_bytes += 2;
238  }
239  }
240  wav->peak_maxpos[c] = 0;
241  wav->peak_maxneg[c] = 0;
242  }
243  wav->peak_num_frames++;
244 }
245 
246 static int peak_write_chunk(AVFormatContext *s)
247 {
248  WAVMuxContext *wav = s->priv_data;
249  AVIOContext *pb = s->pb;
250  AVCodecParameters *par = s->streams[0]->codecpar;
251  int64_t peak = ff_start_tag(s->pb, "levl");
252  int64_t now0;
253  time_t now_secs;
254  char timestamp[28];
255 
256  /* Peak frame of incomplete block at end */
257  if (wav->peak_block_pos)
258  peak_write_frame(s);
259 
260  memset(timestamp, 0, sizeof(timestamp));
261  if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
262  struct tm tmpbuf;
263  av_log(s, AV_LOG_INFO, "Writing local time and date to Peak Envelope Chunk\n");
264  now0 = av_gettime();
265  now_secs = now0 / 1000000;
266  if (strftime(timestamp, sizeof(timestamp), "%Y:%m:%d:%H:%M:%S:", localtime_r(&now_secs, &tmpbuf))) {
267  av_strlcatf(timestamp, sizeof(timestamp), "%03d", (int)((now0 / 1000) % 1000));
268  } else {
269  av_log(s, AV_LOG_ERROR, "Failed to write timestamp\n");
270  return -1;
271  }
272  }
273 
274  avio_wl32(pb, 1); /* version */
275  avio_wl32(pb, wav->peak_format); /* 8 or 16 bit */
276  avio_wl32(pb, wav->peak_ppv); /* positive and negative */
277  avio_wl32(pb, wav->peak_block_size); /* frames per value */
278  avio_wl32(pb, par->channels); /* number of channels */
279  avio_wl32(pb, wav->peak_num_frames); /* number of peak frames */
280  avio_wl32(pb, -1); /* audio sample frame position (not implemented) */
281  avio_wl32(pb, 128); /* equal to size of header */
282  avio_write(pb, timestamp, 28); /* ASCII time stamp */
283  ffio_fill(pb, 0, 60);
284 
285  avio_write(pb, wav->peak_output, wav->peak_outbuf_bytes);
286 
287  ff_end_tag(pb, peak);
288 
289  if (!wav->data)
290  wav->data = peak;
291 
292  return 0;
293 }
294 
295 static int wav_write_header(AVFormatContext *s)
296 {
297  WAVMuxContext *wav = s->priv_data;
298  AVIOContext *pb = s->pb;
299  int64_t fmt;
300 
301  if (s->nb_streams != 1) {
302  av_log(s, AV_LOG_ERROR, "WAVE files have exactly one stream\n");
303  return AVERROR(EINVAL);
304  }
305 
306  if (wav->rf64 == RF64_ALWAYS) {
307  ffio_wfourcc(pb, "RF64");
308  avio_wl32(pb, -1); /* RF64 chunk size: use size in ds64 */
309  } else {
310  ffio_wfourcc(pb, "RIFF");
311  avio_wl32(pb, -1); /* file length */
312  }
313 
314  ffio_wfourcc(pb, "WAVE");
315 
316  if (wav->rf64 != RF64_NEVER) {
317  /* write empty ds64 chunk or JUNK chunk to reserve space for ds64 */
318  ffio_wfourcc(pb, wav->rf64 == RF64_ALWAYS ? "ds64" : "JUNK");
319  avio_wl32(pb, 28); /* chunk size */
320  wav->ds64 = avio_tell(pb);
321  ffio_fill(pb, 0, 28);
322  }
323 
324  if (wav->write_peak != PEAK_ONLY) {
325  /* format header */
326  fmt = ff_start_tag(pb, "fmt ");
327  if (ff_put_wav_header(s, pb, s->streams[0]->codecpar, 0) < 0) {
329  av_log(s, AV_LOG_ERROR, "%s codec not supported in WAVE format\n",
330  desc ? desc->name : "unknown");
331  return AVERROR(ENOSYS);
332  }
333  ff_end_tag(pb, fmt);
334  }
335 
336  if (s->streams[0]->codecpar->codec_tag != 0x01 /* hence for all other than PCM */
337  && (s->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
338  wav->fact_pos = ff_start_tag(pb, "fact");
339  avio_wl32(pb, 0);
340  ff_end_tag(pb, wav->fact_pos);
341  }
342 
343  if (wav->write_bext)
344  bwf_write_bext_chunk(s);
345 
346  if (wav->write_peak) {
347  int ret;
348  if ((ret = peak_init_writer(s)) < 0)
349  return ret;
350  }
351 
352  avpriv_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codecpar->sample_rate);
353  wav->maxpts = wav->last_duration = 0;
354  wav->minpts = INT64_MAX;
355 
356  if (wav->write_peak != PEAK_ONLY) {
357  /* info header */
359 
360  /* data header */
361  wav->data = ff_start_tag(pb, "data");
362  }
363 
364  return 0;
365 }
366 
367 static int wav_write_packet(AVFormatContext *s, AVPacket *pkt)
368 {
369  AVIOContext *pb = s->pb;
370  WAVMuxContext *wav = s->priv_data;
371 
372  if (wav->write_peak != PEAK_ONLY)
373  avio_write(pb, pkt->data, pkt->size);
374 
375  if (wav->write_peak) {
376  int c = 0;
377  int i;
378  for (i = 0; i < pkt->size; i += wav->peak_bps) {
379  if (wav->peak_bps == 1) {
380  wav->peak_maxpos[c] = FFMAX(wav->peak_maxpos[c], *(int8_t*)(pkt->data + i));
381  wav->peak_maxneg[c] = FFMIN(wav->peak_maxneg[c], *(int8_t*)(pkt->data + i));
382  } else {
383  wav->peak_maxpos[c] = FFMAX(wav->peak_maxpos[c], (int16_t)AV_RL16(pkt->data + i));
384  wav->peak_maxneg[c] = FFMIN(wav->peak_maxneg[c], (int16_t)AV_RL16(pkt->data + i));
385  }
386  if (++c == s->streams[0]->codecpar->channels) {
387  c = 0;
388  if (++wav->peak_block_pos == wav->peak_block_size) {
389  peak_write_frame(s);
390  wav->peak_block_pos = 0;
391  }
392  }
393  }
394  }
395 
396  if(pkt->pts != AV_NOPTS_VALUE) {
397  wav->minpts = FFMIN(wav->minpts, pkt->pts);
398  wav->maxpts = FFMAX(wav->maxpts, pkt->pts);
399  wav->last_duration = pkt->duration;
400  } else
401  av_log(s, AV_LOG_ERROR, "wav_write_packet: NOPTS\n");
402  return 0;
403 }
404 
405 static int wav_write_trailer(AVFormatContext *s)
406 {
407  AVIOContext *pb = s->pb;
408  WAVMuxContext *wav = s->priv_data;
409  int64_t file_size, data_size;
410  int64_t number_of_samples = 0;
411  int rf64 = 0;
412  int ret = 0;
413 
414  if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
415  if (wav->write_peak != PEAK_ONLY && avio_tell(pb) - wav->data < UINT32_MAX) {
416  ff_end_tag(pb, wav->data);
417  }
418 
419  if (wav->write_peak && wav->peak_output) {
420  ret = peak_write_chunk(s);
421  }
422 
423  /* update file size */
424  file_size = avio_tell(pb);
425  data_size = file_size - wav->data;
426  if (wav->rf64 == RF64_ALWAYS || (wav->rf64 == RF64_AUTO && file_size - 8 > UINT32_MAX)) {
427  rf64 = 1;
428  } else if (file_size - 8 <= UINT32_MAX) {
429  avio_seek(pb, 4, SEEK_SET);
430  avio_wl32(pb, (uint32_t)(file_size - 8));
431  avio_seek(pb, file_size, SEEK_SET);
432  } else {
433  av_log(s, AV_LOG_ERROR,
434  "Filesize %"PRId64" invalid for wav, output file will be broken\n",
435  file_size);
436  }
437  number_of_samples = av_rescale_q(wav->maxpts - wav->minpts + wav->last_duration,
438  s->streams[0]->time_base,
439  av_make_q(1, s->streams[0]->codecpar->sample_rate));
440 
441  if(s->streams[0]->codecpar->codec_tag != 0x01) {
442  /* Update num_samps in fact chunk */
443  avio_seek(pb, wav->fact_pos, SEEK_SET);
444  if (rf64 || (wav->rf64 == RF64_AUTO && number_of_samples > UINT32_MAX)) {
445  rf64 = 1;
446  avio_wl32(pb, -1);
447  } else {
448  avio_wl32(pb, number_of_samples);
449  avio_seek(pb, file_size, SEEK_SET);
450  }
451  }
452 
453  if (rf64) {
454  /* overwrite RIFF with RF64 */
455  avio_seek(pb, 0, SEEK_SET);
456  ffio_wfourcc(pb, "RF64");
457  avio_wl32(pb, -1);
458 
459  /* write ds64 chunk (overwrite JUNK if rf64 == RF64_AUTO) */
460  avio_seek(pb, wav->ds64 - 8, SEEK_SET);
461  ffio_wfourcc(pb, "ds64");
462  avio_wl32(pb, 28); /* ds64 chunk size */
463  avio_wl64(pb, file_size - 8); /* RF64 chunk size */
464  avio_wl64(pb, data_size); /* data chunk size */
465  avio_wl64(pb, number_of_samples); /* fact chunk number of samples */
466  avio_wl32(pb, 0); /* number of table entries for non-'data' chunks */
467 
468  /* write -1 in data chunk size */
469  avio_seek(pb, wav->data - 4, SEEK_SET);
470  avio_wl32(pb, -1);
471 
472  avio_seek(pb, file_size, SEEK_SET);
473  }
474  }
475 
476  return ret;
477 }
478 
479 #define OFFSET(x) offsetof(WAVMuxContext, x)
480 #define ENC AV_OPT_FLAG_ENCODING_PARAM
481 static const AVOption options[] = {
482  { "write_bext", "Write BEXT chunk.", OFFSET(write_bext), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
483  { "write_peak", "Write Peak Envelope chunk.", OFFSET(write_peak), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, ENC, "peak" },
484  { "off", "Do not write peak chunk.", 0, AV_OPT_TYPE_CONST, { .i64 = PEAK_OFF }, 0, 0, ENC, "peak" },
485  { "on", "Append peak chunk after wav data.", 0, AV_OPT_TYPE_CONST, { .i64 = PEAK_ON }, 0, 0, ENC, "peak" },
486  { "only", "Write only peak chunk, omit wav data.", 0, AV_OPT_TYPE_CONST, { .i64 = PEAK_ONLY }, 0, 0, ENC, "peak" },
487  { "rf64", "Use RF64 header rather than RIFF for large files.", OFFSET(rf64), AV_OPT_TYPE_INT, { .i64 = RF64_NEVER },-1, 1, ENC, "rf64" },
488  { "auto", "Write RF64 header if file grows large enough.", 0, AV_OPT_TYPE_CONST, { .i64 = RF64_AUTO }, 0, 0, ENC, "rf64" },
489  { "always", "Always write RF64 header regardless of file size.", 0, AV_OPT_TYPE_CONST, { .i64 = RF64_ALWAYS }, 0, 0, ENC, "rf64" },
490  { "never", "Never write RF64 header regardless of file size.", 0, AV_OPT_TYPE_CONST, { .i64 = RF64_NEVER }, 0, 0, ENC, "rf64" },
491  { "peak_block_size", "Number of audio samples used to generate each peak frame.", OFFSET(peak_block_size), AV_OPT_TYPE_INT, { .i64 = 256 }, 0, 65536, ENC },
492  { "peak_format", "The format of the peak envelope data (1: uint8, 2: uint16).", OFFSET(peak_format), AV_OPT_TYPE_INT, { .i64 = PEAK_FORMAT_UINT16 }, PEAK_FORMAT_UINT8, PEAK_FORMAT_UINT16, ENC },
493  { "peak_ppv", "Number of peak points per peak value (1 or 2).", OFFSET(peak_ppv), AV_OPT_TYPE_INT, { .i64 = 2 }, 1, 2, ENC },
494  { NULL },
495 };
496 
497 static const AVClass wav_muxer_class = {
498  .class_name = "WAV muxer",
499  .item_name = av_default_item_name,
500  .option = options,
501  .version = LIBAVUTIL_VERSION_INT,
502 };
503 
505  .name = "wav",
506  .long_name = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"),
507  .mime_type = "audio/x-wav",
508  .extensions = "wav",
509  .priv_data_size = sizeof(WAVMuxContext),
510  .audio_codec = AV_CODEC_ID_PCM_S16LE,
511  .video_codec = AV_CODEC_ID_NONE,
512  .write_header = wav_write_header,
513  .write_packet = wav_write_packet,
514  .write_trailer = wav_write_trailer,
515  .deinit = wav_deinit,
517  .codec_tag = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 },
518  .priv_class = &wav_muxer_class,
519 };
520 #endif /* CONFIG_WAV_MUXER */
521 
522 #if CONFIG_W64_MUXER
523 #include "w64.h"
524 
525 static void start_guid(AVIOContext *pb, const uint8_t *guid, int64_t *pos)
526 {
527  *pos = avio_tell(pb);
528 
529  avio_write(pb, guid, 16);
530  avio_wl64(pb, INT64_MAX);
531 }
532 
533 static void end_guid(AVIOContext *pb, int64_t start)
534 {
535  int64_t end, pos = avio_tell(pb);
536 
537  end = FFALIGN(pos, 8);
538  ffio_fill(pb, 0, end - pos);
539  avio_seek(pb, start + 16, SEEK_SET);
540  avio_wl64(pb, end - start);
541  avio_seek(pb, end, SEEK_SET);
542 }
543 
544 static int w64_write_header(AVFormatContext *s)
545 {
546  WAVMuxContext *wav = s->priv_data;
547  AVIOContext *pb = s->pb;
548  int64_t start;
549  int ret;
550 
552  avio_wl64(pb, -1);
554  start_guid(pb, ff_w64_guid_fmt, &start);
555  if ((ret = ff_put_wav_header(s, pb, s->streams[0]->codecpar, 0)) < 0) {
557  av_log(s, AV_LOG_ERROR, "%s codec not supported\n",
558  codec ? codec->name : "NONE");
559  return ret;
560  }
561  end_guid(pb, start);
562 
563  if (s->streams[0]->codecpar->codec_tag != 0x01 /* hence for all other than PCM */
564  && (s->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
565  start_guid(pb, ff_w64_guid_fact, &wav->fact_pos);
566  avio_wl64(pb, 0);
567  end_guid(pb, wav->fact_pos);
568  }
569 
570  start_guid(pb, ff_w64_guid_data, &wav->data);
571 
572  return 0;
573 }
574 
575 static int w64_write_trailer(AVFormatContext *s)
576 {
577  AVIOContext *pb = s->pb;
578  WAVMuxContext *wav = s->priv_data;
579  int64_t file_size;
580 
581  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
582  end_guid(pb, wav->data);
583 
584  file_size = avio_tell(pb);
585  avio_seek(pb, 16, SEEK_SET);
586  avio_wl64(pb, file_size);
587 
588  if (s->streams[0]->codecpar->codec_tag != 0x01) {
589  int64_t number_of_samples;
590 
591  number_of_samples = av_rescale(wav->maxpts - wav->minpts + wav->last_duration,
592  s->streams[0]->codecpar->sample_rate * (int64_t)s->streams[0]->time_base.num,
593  s->streams[0]->time_base.den);
594  avio_seek(pb, wav->fact_pos + 24, SEEK_SET);
595  avio_wl64(pb, number_of_samples);
596  }
597 
598  avio_seek(pb, file_size, SEEK_SET);
599  }
600 
601  return 0;
602 }
603 
605  .name = "w64",
606  .long_name = NULL_IF_CONFIG_SMALL("Sony Wave64"),
607  .extensions = "w64",
608  .priv_data_size = sizeof(WAVMuxContext),
609  .audio_codec = AV_CODEC_ID_PCM_S16LE,
610  .video_codec = AV_CODEC_ID_NONE,
611  .write_header = w64_write_header,
612  .write_packet = wav_write_packet,
613  .write_trailer = w64_write_trailer,
615  .codec_tag = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 },
616 };
617 #endif /* CONFIG_W64_MUXER */
Definition: wavenc.c:57
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:701
void avio_wb64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:441
#define NULL
Definition: coverity.c:32
void avio_wl16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:447
Bytestream IO Context.
Definition: avio.h:161
void * av_realloc(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory.
Definition: mem.c:135
const uint8_t ff_w64_guid_wave[16]
Definition: w64.c:28
Buffered I/O operations.
int16_t * peak_maxpos
Definition: wavenc.c:73
void ff_end_tag(AVIOContext *pb, int64_t start)
Definition: riffenc.c:38
int64_t ff_start_tag(AVIOContext *pb, const char *tag)
Definition: riffenc.c:31
#define RF64_ALWAYS
Definition: wavenc.c:51
AVOption.
Definition: opt.h:246
int ff_put_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int flags)
Write WAVEFORMAT header structure.
Definition: riffenc.c:54
int64_t minpts
Definition: wavenc.c:71
const uint8_t ff_w64_guid_fact[16]
Definition: w64.c:38
int peak_format
Definition: wavenc.c:83
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
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:4938
const char * desc
Definition: nvenc.c:79
int write_peak
Definition: wavenc.c:80
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
int num
Numerator.
Definition: rational.h:59
int size
Definition: packet.h:356
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:241
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
#define AV_RL16
Definition: intreadwrite.h:42
const char * key
static AVPacket pkt
int64_t ds64
Definition: wavenc.c:70
AVCodec.
Definition: codec.h:190
#define AVFMT_TS_NONSTRICT
Format does not require strictly increasing timestamps, but they must still be monotonic.
Definition: avformat.h:472
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
int64_t fact_pos
Definition: wavenc.c:69
int peak_block_pos
Definition: wavenc.c:84
Format I/O context.
Definition: avformat.h:1351
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
Public dictionary API.
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:367
uint8_t
#define av_cold
Definition: attributes.h:88
#define av_malloc(s)
AVOptions.
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:373
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1419
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1482
uint8_t * data
Definition: packet.h:355
uint32_t tag
Definition: movenc.c:1532
PeakFormat
Definition: wavenc.c:61
int64_t data
Definition: wavenc.c:68
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:213
static av_always_inline void ffio_wfourcc(AVIOContext *pb, const uint8_t *s)
Definition: avio_internal.h:58
#define AVFMT_FLAG_BITEXACT
When muxing, try to avoid writing any random/volatile data to the output.
Definition: avformat.h:1499
#define FFALIGN(x, a)
Definition: macros.h:48
#define av_log(a,...)
void avio_wl64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:435
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
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
#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:1552
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1591
#define AVERROR(e)
Definition: error.h:43
PeakType
Definition: wavenc.c:55
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
unsigned int pos
Definition: spdifenc.c:410
const char * name
Name of the codec implementation.
Definition: codec.h:197
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:506
AVOutputFormat ff_wav_muxer
#define FFMAX(a, b)
Definition: common.h:94
int16_t * peak_maxneg
Definition: wavenc.c:73
AVOutputFormat ff_w64_muxer
int write_bext
Definition: wavenc.c:79
int peak_block_size
Definition: wavenc.c:82
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1407
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:260
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 ffio_fill(AVIOContext *s, int b, int count)
Definition: aviobuf.c:199
#define FFMIN(a, b)
Definition: common.h:96
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98
const uint8_t ff_w64_guid_data[16]
Definition: w64.c:42
const char * name
Definition: avformat.h:500
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
const uint8_t ff_w64_guid_riff[16]
Definition: w64.c:23
#define s(width, name)
Definition: cbs_vp9.c:257
int avio_put_str(AVIOContext *s, const char *str)
Write a NULL-terminated string.
Definition: aviobuf.c:383
int64_t av_gettime(void)
Get the current time in microseconds.
Definition: time.c:39
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
#define RF64_AUTO
Definition: wavenc.c:49
AVIOContext * pb
I/O context.
Definition: avformat.h:1393
static AVRational av_make_q(int num, int den)
Create an AVRational.
Definition: rational.h:71
int64_t maxpts
Definition: wavenc.c:72
#define ENC
Definition: caca.c:203
uint32_t peak_num_frames
Definition: wavenc.c:74
void ff_riff_write_info(AVFormatContext *s)
Write all recognized RIFF tags from s->metadata.
Definition: riffenc.c:327
Describe the class of an AVClass context structure.
Definition: log.h:67
size_t av_strlcatf(char *dst, size_t size, const char *fmt,...)
Definition: avstring.c:101
#define RF64_NEVER
Definition: wavenc.c:50
const char * name
Name of the codec described by this descriptor.
Definition: codec_desc.h:46
AVCodec * avcodec_find_decoder(enum AVCodecID id)
Find a registered decoder with a matching codec ID.
Definition: allcodecs.c:919
This struct describes the properties of a single codec described by an AVCodecID. ...
Definition: codec_desc.h:38
int rf64
Definition: wavenc.c:81
#define flags(name, subs,...)
Definition: cbs_av1.c:564
const uint8_t ff_w64_guid_fmt[16]
Definition: w64.c:33
#define OFFSET(x)
Definition: ffmpeg_opt.c:3387
int sample_rate
Audio only.
Definition: codec_par.h:170
Main libavformat public API header.
const OptionDef options[]
Definition: ffmpeg_opt.c:3388
common internal and external API header
uint32_t peak_outbuf_size
Definition: wavenc.c:75
static double c[64]
uint32_t peak_outbuf_bytes
Definition: wavenc.c:76
#define AV_WL16(p, v)
Definition: intreadwrite.h:412
uint8_t * peak_output
Definition: wavenc.c:77
#define localtime_r
Definition: time_internal.h:46
int den
Denominator.
Definition: rational.h:60
char * value
Definition: dict.h:87
int len
int peak_bps
Definition: wavenc.c:86
void * priv_data
Format private data.
Definition: avformat.h:1379
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:346
#define PEAK_BUFFER_SIZE
Definition: wavenc.c:53
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
Definition: codec_desc.c:3394
int channels
Audio only.
Definition: codec_par.h:166
#define av_freep(p)
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1023
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:905
This structure stores compressed data.
Definition: packet.h:332
int peak_ppv
Definition: wavenc.c:85
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:348
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
int last_duration
Definition: wavenc.c:78
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
Definition: mem.c:192