FFmpeg
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"
41 #include "libavutil/time_internal.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 typedef enum {
54  PEAK_OFF = 0,
55  PEAK_ON,
56  PEAK_ONLY
57 } PeakType;
58 
59 typedef enum {
60  PEAK_FORMAT_UINT8 = 1,
61  PEAK_FORMAT_UINT16
62 } PeakFormat;
63 
64 typedef struct WAVMuxContext {
65  const AVClass *class;
66  int64_t data;
67  int64_t fact_pos;
68  int64_t ds64;
69  int64_t minpts;
70  int64_t maxpts;
71  int16_t *peak_maxpos, *peak_maxneg;
72  uint32_t peak_num_frames;
73  unsigned peak_outbuf_size;
74  uint32_t peak_outbuf_bytes;
75  unsigned size_increment;
76  uint8_t *peak_output;
77  int last_duration;
78  int write_bext;
79  int write_peak;
80  int rf64;
81  int peak_block_size;
82  int peak_format;
83  int peak_block_pos;
84  int peak_ppv;
85  int peak_bps;
86 } WAVMuxContext;
87 
88 #if CONFIG_WAV_MUXER
89 static inline void bwf_write_bext_string(AVFormatContext *s, const char *key, int maxlen)
90 {
91  AVDictionaryEntry *tag;
92  size_t len = 0;
93 
94  if (tag = av_dict_get(s->metadata, key, NULL, 0)) {
95  len = strlen(tag->value);
96  len = FFMIN(len, maxlen);
97  avio_write(s->pb, tag->value, len);
98  }
99 
100  ffio_fill(s->pb, 0, maxlen - len);
101 }
102 
103 static void bwf_write_bext_chunk(AVFormatContext *s)
104 {
105  AVDictionaryEntry *tmp_tag;
106  uint64_t time_reference = 0;
107  int64_t bext = ff_start_tag(s->pb, "bext");
108 
109  bwf_write_bext_string(s, "description", 256);
110  bwf_write_bext_string(s, "originator", 32);
111  bwf_write_bext_string(s, "originator_reference", 32);
112  bwf_write_bext_string(s, "origination_date", 10);
113  bwf_write_bext_string(s, "origination_time", 8);
114 
115  if (tmp_tag = av_dict_get(s->metadata, "time_reference", NULL, 0))
116  time_reference = strtoll(tmp_tag->value, NULL, 10);
117  avio_wl64(s->pb, time_reference);
118  avio_wl16(s->pb, 1); // set version to 1
119 
120  if ((tmp_tag = av_dict_get(s->metadata, "umid", NULL, 0)) && strlen(tmp_tag->value) > 2) {
121  unsigned char umidpart_str[17] = {0};
122  int64_t i;
123  uint64_t umidpart;
124  size_t len = strlen(tmp_tag->value+2);
125 
126  for (i = 0; i < len/16; i++) {
127  memcpy(umidpart_str, tmp_tag->value + 2 + (i*16), 16);
128  umidpart = strtoll(umidpart_str, NULL, 16);
129  avio_wb64(s->pb, umidpart);
130  }
131  ffio_fill(s->pb, 0, 64 - i*8);
132  } else
133  ffio_fill(s->pb, 0, 64); // zero UMID
134 
135  ffio_fill(s->pb, 0, 190); // Reserved
136 
137  if (tmp_tag = av_dict_get(s->metadata, "coding_history", NULL, 0))
138  avio_put_str(s->pb, tmp_tag->value);
139 
140  ff_end_tag(s->pb, bext);
141 }
142 
143 static av_cold void wav_deinit(AVFormatContext *s)
144 {
145  WAVMuxContext *wav = s->priv_data;
146 
147  av_freep(&wav->peak_maxpos);
148  av_freep(&wav->peak_maxneg);
149  av_freep(&wav->peak_output);
150 }
151 
152 static av_cold int peak_init_writer(AVFormatContext *s)
153 {
154  WAVMuxContext *wav = s->priv_data;
155  AVCodecParameters *par = s->streams[0]->codecpar;
156 
157  if (par->codec_id != AV_CODEC_ID_PCM_S8 &&
158  par->codec_id != AV_CODEC_ID_PCM_S16LE &&
159  par->codec_id != AV_CODEC_ID_PCM_U8 &&
160  par->codec_id != AV_CODEC_ID_PCM_U16LE) {
161  AVCodec *codec = avcodec_find_decoder(s->streams[0]->codecpar->codec_id);
162  av_log(s, AV_LOG_ERROR, "%s codec not supported for Peak Chunk\n",
163  codec ? codec->name : "NONE");
164  return -1;
165  }
166 
167  wav->peak_bps = av_get_bits_per_sample(par->codec_id) / 8;
168 
169  if (wav->peak_bps == 1 && wav->peak_format == PEAK_FORMAT_UINT16) {
170  av_log(s, AV_LOG_ERROR,
171  "Writing 16 bit peak for 8 bit audio does not make sense\n");
172  return AVERROR(EINVAL);
173  }
174  if (par->channels > INT_MAX / (wav->peak_bps * wav->peak_ppv))
175  return AVERROR(ERANGE);
176  wav->size_increment = par->channels * wav->peak_bps * wav->peak_ppv;
177 
178  wav->peak_maxpos = av_mallocz_array(par->channels, sizeof(*wav->peak_maxpos));
179  wav->peak_maxneg = av_mallocz_array(par->channels, sizeof(*wav->peak_maxneg));
180  if (!wav->peak_maxpos || !wav->peak_maxneg)
181  goto nomem;
182 
183  return 0;
184 
185 nomem:
186  av_log(s, AV_LOG_ERROR, "Out of memory\n");
187  return AVERROR(ENOMEM);
188 }
189 
190 static int peak_write_frame(AVFormatContext *s)
191 {
192  WAVMuxContext *wav = s->priv_data;
193  AVCodecParameters *par = s->streams[0]->codecpar;
194  unsigned new_size = wav->peak_outbuf_bytes + wav->size_increment;
195  uint8_t *tmp;
196  int c;
197 
198  if (new_size > INT_MAX) {
199  wav->write_peak = PEAK_OFF;
200  return AVERROR(ERANGE);
201  }
202  tmp = av_fast_realloc(wav->peak_output, &wav->peak_outbuf_size, new_size);
203  if (!tmp) {
204  wav->write_peak = PEAK_OFF;
205  return AVERROR(ENOMEM);
206  }
207  wav->peak_output = tmp;
208 
209  for (c = 0; c < par->channels; c++) {
210  wav->peak_maxneg[c] = -wav->peak_maxneg[c];
211 
212  if (wav->peak_bps == 2 && wav->peak_format == PEAK_FORMAT_UINT8) {
213  wav->peak_maxpos[c] = wav->peak_maxpos[c] / 256;
214  wav->peak_maxneg[c] = wav->peak_maxneg[c] / 256;
215  }
216 
217  if (wav->peak_ppv == 1)
218  wav->peak_maxpos[c] =
219  FFMAX(wav->peak_maxpos[c], wav->peak_maxneg[c]);
220 
221  if (wav->peak_format == PEAK_FORMAT_UINT8) {
222  wav->peak_output[wav->peak_outbuf_bytes++] =
223  wav->peak_maxpos[c];
224  if (wav->peak_ppv == 2) {
225  wav->peak_output[wav->peak_outbuf_bytes++] =
226  wav->peak_maxneg[c];
227  }
228  } else {
229  AV_WL16(wav->peak_output + wav->peak_outbuf_bytes,
230  wav->peak_maxpos[c]);
231  wav->peak_outbuf_bytes += 2;
232  if (wav->peak_ppv == 2) {
233  AV_WL16(wav->peak_output + wav->peak_outbuf_bytes,
234  wav->peak_maxneg[c]);
235  wav->peak_outbuf_bytes += 2;
236  }
237  }
238  wav->peak_maxpos[c] = 0;
239  wav->peak_maxneg[c] = 0;
240  }
241  wav->peak_num_frames++;
242 
243  return 0;
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  int ret = peak_write_frame(s);
259  if (ret < 0)
260  return ret;
261  }
262 
263  memset(timestamp, 0, sizeof(timestamp));
264  if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
265  struct tm tmpbuf;
266  av_log(s, AV_LOG_INFO, "Writing local time and date to Peak Envelope Chunk\n");
267  now0 = av_gettime();
268  now_secs = now0 / 1000000;
269  if (strftime(timestamp, sizeof(timestamp), "%Y:%m:%d:%H:%M:%S:", localtime_r(&now_secs, &tmpbuf))) {
270  av_strlcatf(timestamp, sizeof(timestamp), "%03d", (int)((now0 / 1000) % 1000));
271  } else {
272  av_log(s, AV_LOG_ERROR, "Failed to write timestamp\n");
273  return -1;
274  }
275  }
276 
277  avio_wl32(pb, 1); /* version */
278  avio_wl32(pb, wav->peak_format); /* 8 or 16 bit */
279  avio_wl32(pb, wav->peak_ppv); /* positive and negative */
280  avio_wl32(pb, wav->peak_block_size); /* frames per value */
281  avio_wl32(pb, par->channels); /* number of channels */
282  avio_wl32(pb, wav->peak_num_frames); /* number of peak frames */
283  avio_wl32(pb, -1); /* audio sample frame position (not implemented) */
284  avio_wl32(pb, 128); /* equal to size of header */
285  avio_write(pb, timestamp, 28); /* ASCII time stamp */
286  ffio_fill(pb, 0, 60);
287 
288  avio_write(pb, wav->peak_output, wav->peak_outbuf_bytes);
289 
290  ff_end_tag(pb, peak);
291 
292  if (!wav->data)
293  wav->data = peak;
294 
295  return 0;
296 }
297 
298 static int wav_write_header(AVFormatContext *s)
299 {
300  WAVMuxContext *wav = s->priv_data;
301  AVIOContext *pb = s->pb;
302  int64_t fmt;
303 
304  if (s->nb_streams != 1) {
305  av_log(s, AV_LOG_ERROR, "WAVE files have exactly one stream\n");
306  return AVERROR(EINVAL);
307  }
308 
309  if (wav->rf64 == RF64_ALWAYS) {
310  ffio_wfourcc(pb, "RF64");
311  avio_wl32(pb, -1); /* RF64 chunk size: use size in ds64 */
312  } else {
313  ffio_wfourcc(pb, "RIFF");
314  avio_wl32(pb, -1); /* file length */
315  }
316 
317  ffio_wfourcc(pb, "WAVE");
318 
319  if (wav->rf64 != RF64_NEVER) {
320  /* write empty ds64 chunk or JUNK chunk to reserve space for ds64 */
321  ffio_wfourcc(pb, wav->rf64 == RF64_ALWAYS ? "ds64" : "JUNK");
322  avio_wl32(pb, 28); /* chunk size */
323  wav->ds64 = avio_tell(pb);
324  ffio_fill(pb, 0, 28);
325  }
326 
327  if (wav->write_peak != PEAK_ONLY) {
328  /* format header */
329  fmt = ff_start_tag(pb, "fmt ");
330  if (ff_put_wav_header(s, pb, s->streams[0]->codecpar, 0) < 0) {
331  const AVCodecDescriptor *desc = avcodec_descriptor_get(s->streams[0]->codecpar->codec_id);
332  av_log(s, AV_LOG_ERROR, "%s codec not supported in WAVE format\n",
333  desc ? desc->name : "unknown");
334  return AVERROR(ENOSYS);
335  }
336  ff_end_tag(pb, fmt);
337  }
338 
339  if (s->streams[0]->codecpar->codec_tag != 0x01 /* hence for all other than PCM */
340  && (s->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
341  wav->fact_pos = ff_start_tag(pb, "fact");
342  avio_wl32(pb, 0);
343  ff_end_tag(pb, wav->fact_pos);
344  }
345 
346  if (wav->write_bext)
347  bwf_write_bext_chunk(s);
348 
349  if (wav->write_peak) {
350  int ret;
351  if ((ret = peak_init_writer(s)) < 0)
352  return ret;
353  }
354 
355  avpriv_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codecpar->sample_rate);
356  wav->maxpts = wav->last_duration = 0;
357  wav->minpts = INT64_MAX;
358 
359  if (wav->write_peak != PEAK_ONLY) {
360  /* info header */
361  ff_riff_write_info(s);
362 
363  /* data header */
364  wav->data = ff_start_tag(pb, "data");
365  }
366 
367  return 0;
368 }
369 
370 static int wav_write_packet(AVFormatContext *s, AVPacket *pkt)
371 {
372  AVIOContext *pb = s->pb;
373  WAVMuxContext *wav = s->priv_data;
374 
375  if (wav->write_peak != PEAK_ONLY)
376  avio_write(pb, pkt->data, pkt->size);
377 
378  if (wav->write_peak) {
379  int c = 0;
380  int i;
381  for (i = 0; i < pkt->size; i += wav->peak_bps) {
382  if (wav->peak_bps == 1) {
383  wav->peak_maxpos[c] = FFMAX(wav->peak_maxpos[c], *(int8_t*)(pkt->data + i));
384  wav->peak_maxneg[c] = FFMIN(wav->peak_maxneg[c], *(int8_t*)(pkt->data + i));
385  } else {
386  wav->peak_maxpos[c] = FFMAX(wav->peak_maxpos[c], (int16_t)AV_RL16(pkt->data + i));
387  wav->peak_maxneg[c] = FFMIN(wav->peak_maxneg[c], (int16_t)AV_RL16(pkt->data + i));
388  }
389  if (++c == s->streams[0]->codecpar->channels) {
390  c = 0;
391  if (++wav->peak_block_pos == wav->peak_block_size) {
392  int ret = peak_write_frame(s);
393  if (ret < 0)
394  return ret;
395  wav->peak_block_pos = 0;
396  }
397  }
398  }
399  }
400 
401  if(pkt->pts != AV_NOPTS_VALUE) {
402  wav->minpts = FFMIN(wav->minpts, pkt->pts);
403  wav->maxpts = FFMAX(wav->maxpts, pkt->pts);
404  wav->last_duration = pkt->duration;
405  } else
406  av_log(s, AV_LOG_ERROR, "wav_write_packet: NOPTS\n");
407  return 0;
408 }
409 
410 static int wav_write_trailer(AVFormatContext *s)
411 {
412  AVIOContext *pb = s->pb;
413  WAVMuxContext *wav = s->priv_data;
414  int64_t file_size, data_size;
415  int64_t number_of_samples = 0;
416  int rf64 = 0;
417  int ret = 0;
418 
419  if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
420  if (wav->write_peak != PEAK_ONLY && avio_tell(pb) - wav->data < UINT32_MAX) {
421  ff_end_tag(pb, wav->data);
422  }
423 
424  if (wav->write_peak && wav->peak_output) {
425  ret = peak_write_chunk(s);
426  }
427 
428  /* update file size */
429  file_size = avio_tell(pb);
430  data_size = file_size - wav->data;
431  if (wav->rf64 == RF64_ALWAYS || (wav->rf64 == RF64_AUTO && file_size - 8 > UINT32_MAX)) {
432  rf64 = 1;
433  } else if (file_size - 8 <= UINT32_MAX) {
434  avio_seek(pb, 4, SEEK_SET);
435  avio_wl32(pb, (uint32_t)(file_size - 8));
436  avio_seek(pb, file_size, SEEK_SET);
437  } else {
438  av_log(s, AV_LOG_ERROR,
439  "Filesize %"PRId64" invalid for wav, output file will be broken\n",
440  file_size);
441  }
442  number_of_samples = av_rescale_q(wav->maxpts - wav->minpts + wav->last_duration,
443  s->streams[0]->time_base,
444  av_make_q(1, s->streams[0]->codecpar->sample_rate));
445 
446  if(s->streams[0]->codecpar->codec_tag != 0x01) {
447  /* Update num_samps in fact chunk */
448  avio_seek(pb, wav->fact_pos, SEEK_SET);
449  if (rf64 || (wav->rf64 == RF64_AUTO && number_of_samples > UINT32_MAX)) {
450  rf64 = 1;
451  avio_wl32(pb, -1);
452  } else {
453  avio_wl32(pb, number_of_samples);
454  avio_seek(pb, file_size, SEEK_SET);
455  }
456  }
457 
458  if (rf64) {
459  /* overwrite RIFF with RF64 */
460  avio_seek(pb, 0, SEEK_SET);
461  ffio_wfourcc(pb, "RF64");
462  avio_wl32(pb, -1);
463 
464  /* write ds64 chunk (overwrite JUNK if rf64 == RF64_AUTO) */
465  avio_seek(pb, wav->ds64 - 8, SEEK_SET);
466  ffio_wfourcc(pb, "ds64");
467  avio_wl32(pb, 28); /* ds64 chunk size */
468  avio_wl64(pb, file_size - 8); /* RF64 chunk size */
469  avio_wl64(pb, data_size); /* data chunk size */
470  avio_wl64(pb, number_of_samples); /* fact chunk number of samples */
471  avio_wl32(pb, 0); /* number of table entries for non-'data' chunks */
472 
473  /* write -1 in data chunk size */
474  avio_seek(pb, wav->data - 4, SEEK_SET);
475  avio_wl32(pb, -1);
476 
477  avio_seek(pb, file_size, SEEK_SET);
478  }
479  }
480 
481  return ret;
482 }
483 
484 #define OFFSET(x) offsetof(WAVMuxContext, x)
485 #define ENC AV_OPT_FLAG_ENCODING_PARAM
486 static const AVOption options[] = {
487  { "write_bext", "Write BEXT chunk.", OFFSET(write_bext), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
488  { "write_peak", "Write Peak Envelope chunk.", OFFSET(write_peak), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, ENC, "peak" },
489  { "off", "Do not write peak chunk.", 0, AV_OPT_TYPE_CONST, { .i64 = PEAK_OFF }, 0, 0, ENC, "peak" },
490  { "on", "Append peak chunk after wav data.", 0, AV_OPT_TYPE_CONST, { .i64 = PEAK_ON }, 0, 0, ENC, "peak" },
491  { "only", "Write only peak chunk, omit wav data.", 0, AV_OPT_TYPE_CONST, { .i64 = PEAK_ONLY }, 0, 0, ENC, "peak" },
492  { "rf64", "Use RF64 header rather than RIFF for large files.", OFFSET(rf64), AV_OPT_TYPE_INT, { .i64 = RF64_NEVER },-1, 1, ENC, "rf64" },
493  { "auto", "Write RF64 header if file grows large enough.", 0, AV_OPT_TYPE_CONST, { .i64 = RF64_AUTO }, 0, 0, ENC, "rf64" },
494  { "always", "Always write RF64 header regardless of file size.", 0, AV_OPT_TYPE_CONST, { .i64 = RF64_ALWAYS }, 0, 0, ENC, "rf64" },
495  { "never", "Never write RF64 header regardless of file size.", 0, AV_OPT_TYPE_CONST, { .i64 = RF64_NEVER }, 0, 0, ENC, "rf64" },
496  { "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 },
497  { "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 },
498  { "peak_ppv", "Number of peak points per peak value (1 or 2).", OFFSET(peak_ppv), AV_OPT_TYPE_INT, { .i64 = 2 }, 1, 2, ENC },
499  { NULL },
500 };
501 
502 static const AVClass wav_muxer_class = {
503  .class_name = "WAV muxer",
504  .item_name = av_default_item_name,
505  .option = options,
506  .version = LIBAVUTIL_VERSION_INT,
507 };
508 
509 AVOutputFormat ff_wav_muxer = {
510  .name = "wav",
511  .long_name = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"),
512  .mime_type = "audio/x-wav",
513  .extensions = "wav",
514  .priv_data_size = sizeof(WAVMuxContext),
515  .audio_codec = AV_CODEC_ID_PCM_S16LE,
516  .video_codec = AV_CODEC_ID_NONE,
517  .write_header = wav_write_header,
518  .write_packet = wav_write_packet,
519  .write_trailer = wav_write_trailer,
520  .deinit = wav_deinit,
521  .flags = AVFMT_TS_NONSTRICT,
522  .codec_tag = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 },
523  .priv_class = &wav_muxer_class,
524 };
525 #endif /* CONFIG_WAV_MUXER */
526 
527 #if CONFIG_W64_MUXER
528 #include "w64.h"
529 
530 static void start_guid(AVIOContext *pb, const uint8_t *guid, int64_t *pos)
531 {
532  *pos = avio_tell(pb);
533 
534  avio_write(pb, guid, 16);
535  avio_wl64(pb, INT64_MAX);
536 }
537 
538 static void end_guid(AVIOContext *pb, int64_t start)
539 {
540  int64_t end, pos = avio_tell(pb);
541 
542  end = FFALIGN(pos, 8);
543  ffio_fill(pb, 0, end - pos);
544  avio_seek(pb, start + 16, SEEK_SET);
545  avio_wl64(pb, end - start);
546  avio_seek(pb, end, SEEK_SET);
547 }
548 
549 static int w64_write_header(AVFormatContext *s)
550 {
551  WAVMuxContext *wav = s->priv_data;
552  AVIOContext *pb = s->pb;
553  int64_t start;
554  int ret;
555 
556  avio_write(pb, ff_w64_guid_riff, sizeof(ff_w64_guid_riff));
557  avio_wl64(pb, -1);
558  avio_write(pb, ff_w64_guid_wave, sizeof(ff_w64_guid_wave));
559  start_guid(pb, ff_w64_guid_fmt, &start);
560  if ((ret = ff_put_wav_header(s, pb, s->streams[0]->codecpar, 0)) < 0) {
561  AVCodec *codec = avcodec_find_decoder(s->streams[0]->codecpar->codec_id);
562  av_log(s, AV_LOG_ERROR, "%s codec not supported\n",
563  codec ? codec->name : "NONE");
564  return ret;
565  }
566  end_guid(pb, start);
567 
568  if (s->streams[0]->codecpar->codec_tag != 0x01 /* hence for all other than PCM */
569  && (s->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
570  start_guid(pb, ff_w64_guid_fact, &wav->fact_pos);
571  avio_wl64(pb, 0);
572  end_guid(pb, wav->fact_pos);
573  }
574 
575  start_guid(pb, ff_w64_guid_data, &wav->data);
576 
577  return 0;
578 }
579 
580 static int w64_write_trailer(AVFormatContext *s)
581 {
582  AVIOContext *pb = s->pb;
583  WAVMuxContext *wav = s->priv_data;
584  int64_t file_size;
585 
586  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
587  end_guid(pb, wav->data);
588 
589  file_size = avio_tell(pb);
590  avio_seek(pb, 16, SEEK_SET);
591  avio_wl64(pb, file_size);
592 
593  if (s->streams[0]->codecpar->codec_tag != 0x01) {
594  int64_t number_of_samples;
595 
596  number_of_samples = av_rescale(wav->maxpts - wav->minpts + wav->last_duration,
597  s->streams[0]->codecpar->sample_rate * (int64_t)s->streams[0]->time_base.num,
598  s->streams[0]->time_base.den);
599  avio_seek(pb, wav->fact_pos + 24, SEEK_SET);
600  avio_wl64(pb, number_of_samples);
601  }
602 
603  avio_seek(pb, file_size, SEEK_SET);
604  }
605 
606  return 0;
607 }
608 
609 AVOutputFormat ff_w64_muxer = {
610  .name = "w64",
611  .long_name = NULL_IF_CONFIG_SMALL("Sony Wave64"),
612  .extensions = "w64",
613  .priv_data_size = sizeof(WAVMuxContext),
614  .audio_codec = AV_CODEC_ID_PCM_S16LE,
615  .video_codec = AV_CODEC_ID_NONE,
616  .write_header = w64_write_header,
617  .write_packet = wav_write_packet,
618  .write_trailer = w64_write_trailer,
619  .flags = AVFMT_TS_NONSTRICT,
620  .codec_tag = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 },
621 };
622 #endif /* CONFIG_W64_MUXER */
AV_CODEC_ID_PCM_S16LE
@ AV_CODEC_ID_PCM_S16LE
Definition: codec_id.h:301
AVCodec
AVCodec.
Definition: codec.h:190
WAVMuxContext::peak_output
uint8_t * peak_output
Definition: wavenc.c:76
AVOutputFormat::name
const char * name
Definition: avformat.h:491
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
WAVMuxContext::peak_maxneg
int16_t * peak_maxneg
Definition: wavenc.c:71
ffio_wfourcc
static av_always_inline void ffio_wfourcc(AVIOContext *pb, const uint8_t *s)
Definition: avio_internal.h:58
AVCodecParameters
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
WAVMuxContext::maxpts
int64_t maxpts
Definition: wavenc.c:70
end
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:92
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:26
AVPacket::data
uint8_t * data
Definition: packet.h:355
AVOption
AVOption.
Definition: opt.h:246
PeakFormat
PeakFormat
Definition: wavenc.c:59
av_mallocz_array
void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.c:190
ff_codec_wav_tags
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:506
avio_wl64
void avio_wl64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:435
ff_wav_muxer
AVOutputFormat ff_wav_muxer
AVPacket::duration
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:373
mathematics.h
WAVMuxContext::peak_outbuf_bytes
uint32_t peak_outbuf_bytes
Definition: wavenc.c:74
WAVMuxContext::fact_pos
int64_t fact_pos
Definition: wavenc.c:67
av_strlcatf
size_t av_strlcatf(char *dst, size_t size, const char *fmt,...)
Definition: avstring.c:101
PEAK_ONLY
@ PEAK_ONLY
Definition: wavenc.c:56
avio_wl16
void avio_wl16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:447
AVCodecParameters::channels
int channels
Audio only.
Definition: codec_par.h:166
WAVMuxContext::peak_bps
int peak_bps
Definition: wavenc.c:85
avio_tell
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
RF64_AUTO
#define RF64_AUTO
Definition: wavenc.c:49
ENC
#define ENC
Definition: caca.c:203
PEAK_FORMAT_UINT16
@ PEAK_FORMAT_UINT16
Definition: wavenc.c:61
ff_start_tag
int64_t ff_start_tag(AVIOContext *pb, const char *tag)
Definition: riffenc.c:31
AV_CODEC_ID_PCM_S8
@ AV_CODEC_ID_PCM_S8
Definition: codec_id.h:305
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
av_cold
#define av_cold
Definition: attributes.h:90
AVCodecTag
Definition: internal.h:42
av_dict_get
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
av_fast_realloc
void * av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
Reallocate the given buffer if it is not large enough, otherwise do nothing.
Definition: mem.c:478
AVCodecDescriptor
This struct describes the properties of a single codec described by an AVCodecID.
Definition: codec_desc.h:38
intreadwrite.h
s
#define s(width, name)
Definition: cbs_vp9.c:257
RF64_NEVER
#define RF64_NEVER
Definition: wavenc.c:50
PEAK_FORMAT_UINT8
@ PEAK_FORMAT_UINT8
Definition: wavenc.c:60
PEAK_ON
@ PEAK_ON
Definition: wavenc.c:55
AV_RL16
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
Definition: bytestream.h:90
av_rescale_q
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
RF64_ALWAYS
#define RF64_ALWAYS
Definition: wavenc.c:51
key
const char * key
Definition: hwcontext_opencl.c:168
WAVMuxContext::data
int64_t data
Definition: wavenc.c:66
time_internal.h
WAVMuxContext::rf64
int rf64
Definition: wavenc.c:80
AVFormatContext
Format I/O context.
Definition: avformat.h:1335
internal.h
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
PEAK_OFF
@ PEAK_OFF
Definition: wavenc.c:54
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
WAVMuxContext::last_duration
int last_duration
Definition: wavenc.c:77
NULL
#define NULL
Definition: coverity.c:32
ff_put_wav_header
int ff_put_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int flags)
Write WAVEFORMAT header structure.
Definition: riffenc.c:54
write_trailer
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
time.h
WAVMuxContext::peak_block_pos
int peak_block_pos
Definition: wavenc.c:83
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
ff_w64_guid_fmt
const uint8_t ff_w64_guid_fmt[16]
Definition: w64.c:33
options
const OptionDef options[]
av_get_bits_per_sample
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:1574
desc
const char * desc
Definition: nvenc.c:79
AVIOContext
Bytestream IO Context.
Definition: avio.h:161
AVPacket::size
int size
Definition: packet.h:356
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:188
WAVMuxContext::write_bext
int write_bext
Definition: wavenc.c:78
PeakType
PeakType
Definition: wavenc.c:53
AVIOContext::seekable
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:260
localtime_r
#define localtime_r
Definition: time_internal.h:46
FFMAX
#define FFMAX(a, b)
Definition: common.h:94
avpriv_set_pts_info
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:4948
av_make_q
static AVRational av_make_q(int num, int den)
Create an AVRational.
Definition: rational.h:71
avio.h
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
WAVMuxContext::minpts
int64_t minpts
Definition: wavenc.c:69
avio_write
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:213
AV_WL16
#define AV_WL16(p, v)
Definition: intreadwrite.h:412
FFMIN
#define FFMIN(a, b)
Definition: common.h:96
avio_wl32
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:367
WAVMuxContext
Definition: wavenc.c:64
ff_end_tag
void ff_end_tag(AVIOContext *pb, int64_t start)
Definition: riffenc.c:38
AV_LOG_INFO
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
WAVMuxContext::write_peak
int write_peak
Definition: wavenc.c:79
write_packet
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:702
WAVMuxContext::peak_block_size
int peak_block_size
Definition: wavenc.c:81
AV_CODEC_ID_NONE
@ AV_CODEC_ID_NONE
Definition: codec_id.h:47
AVOutputFormat
Definition: avformat.h:490
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:348
avio_internal.h
ff_w64_guid_wave
const uint8_t ff_w64_guid_wave[16]
Definition: w64.c:28
common.h
ff_w64_muxer
AVOutputFormat ff_w64_muxer
uint8_t
uint8_t
Definition: audio_convert.c:194
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:197
WAVMuxContext::peak_maxpos
int16_t * peak_maxpos
Definition: wavenc.c:71
ff_w64_guid_fact
const uint8_t ff_w64_guid_fact[16]
Definition: w64.c:38
len
int len
Definition: vorbis_enc_data.h:452
av_rescale
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
AVFMT_TS_NONSTRICT
#define AVFMT_TS_NONSTRICT
Format does not require strictly increasing timestamps, but they must still be monotonic.
Definition: avformat.h:472
WAVMuxContext::peak_ppv
int peak_ppv
Definition: wavenc.c:84
tag
uint32_t tag
Definition: movenc.c:1532
AVFMT_FLAG_BITEXACT
#define AVFMT_FLAG_BITEXACT
When muxing, try to avoid writing any random/volatile data to the output.
Definition: avformat.h:1483
ret
ret
Definition: filter_design.txt:187
avio_seek
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:241
AVClass::class_name
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
avcodec_find_decoder
AVCodec * avcodec_find_decoder(enum AVCodecID id)
Find a registered decoder with a matching codec ID.
Definition: allcodecs.c:919
WAVMuxContext::peak_outbuf_size
unsigned peak_outbuf_size
Definition: wavenc.c:73
pos
unsigned int pos
Definition: spdifenc.c:412
avformat.h
dict.h
OFFSET
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option keep it simple and lowercase description are in without and describe what they for example set the foo of the bar offset is the offset of the field in your see the OFFSET() macro
w64.h
pkt
static AVPacket pkt
Definition: demuxing_decoding.c:54
AVIO_SEEKABLE_NORMAL
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:223
ff_riff_write_info
void ff_riff_write_info(AVFormatContext *s)
Write all recognized RIFF tags from s->metadata.
Definition: riffenc.c:327
WAVMuxContext::peak_format
int peak_format
Definition: wavenc.c:82
WAVMuxContext::ds64
int64_t ds64
Definition: wavenc.c:68
avio_wb64
void avio_wb64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:441
av_gettime
int64_t av_gettime(void)
Get the current time in microseconds.
Definition: time.c:39
ff_w64_guid_data
const uint8_t ff_w64_guid_data[16]
Definition: w64.c:42
AV_CODEC_ID_PCM_U8
@ AV_CODEC_ID_PCM_U8
Definition: codec_id.h:306
ff_w64_guid_riff
const uint8_t ff_w64_guid_riff[16]
Definition: w64.c:23
AVDictionaryEntry
Definition: dict.h:81
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:48
AVCodecParameters::codec_id
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
AVPacket
This structure stores compressed data.
Definition: packet.h:332
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:240
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
riff.h
AV_CODEC_ID_PCM_U16LE
@ AV_CODEC_ID_PCM_U16LE
Definition: codec_id.h:303
ffio_fill
void ffio_fill(AVIOContext *s, int b, int count)
Definition: aviobuf.c:199
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:565
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
avcodec_descriptor_get
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
Definition: codec_desc.c:3394
AVDictionaryEntry::value
char * value
Definition: dict.h:83
WAVMuxContext::size_increment
unsigned size_increment
Definition: wavenc.c:75
avstring.h
write_header
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:346
avio_put_str
int avio_put_str(AVIOContext *s, const char *str)
Write a NULL-terminated string.
Definition: aviobuf.c:383
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:232
WAVMuxContext::peak_num_frames
uint32_t peak_num_frames
Definition: wavenc.c:72
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