FFmpeg  4.3.7
asfenc.c
Go to the documentation of this file.
1 /*
2  * ASF muxer
3  * Copyright (c) 2000, 2001 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include "libavutil/avassert.h"
23 #include "libavutil/dict.h"
24 #include "libavutil/mathematics.h"
25 #include "libavutil/opt.h"
26 #include "avformat.h"
27 #include "avlanguage.h"
28 #include "avio_internal.h"
29 #include "internal.h"
30 #include "riff.h"
31 #include "asf.h"
32 
33 #define ASF_INDEXED_INTERVAL 10000000
34 #define ASF_INDEX_BLOCK (1<<9)
35 #define ASF_PAYLOADS_PER_PACKET 63
36 
37 #define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
38 #define ASF_PACKET_ERROR_CORRECTION_FLAGS \
39  (ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
40  ASF_PACKET_ERROR_CORRECTION_DATA_SIZE)
41 
42 #if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0)
43 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1
44 #else
45 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0
46 #endif
47 
48 #define ASF_PPI_PROPERTY_FLAGS \
49  (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \
50  ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \
51  ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \
52  ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE)
53 
54 #define ASF_PPI_LENGTH_TYPE_FLAGS 0
55 
56 #define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD
57 
58 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
59 # define ASF_PPI_SEQUENCE_FIELD_SIZE 1
60 #endif
61 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
62 # define ASF_PPI_SEQUENCE_FIELD_SIZE 2
63 #endif
64 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
65 # define ASF_PPI_SEQUENCE_FIELD_SIZE 4
66 #endif
67 #ifndef ASF_PPI_SEQUENCE_FIELD_SIZE
68 # define ASF_PPI_SEQUENCE_FIELD_SIZE 0
69 #endif
70 
71 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
72 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 1
73 #endif
74 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
75 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 2
76 #endif
77 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
78 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 4
79 #endif
80 #ifndef ASF_PPI_PACKET_LENGTH_FIELD_SIZE
81 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 0
82 #endif
83 
84 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
85 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 1
86 #endif
87 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
88 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 2
89 #endif
90 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
91 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 4
92 #endif
93 #ifndef ASF_PPI_PADDING_LENGTH_FIELD_SIZE
94 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 0
95 #endif
96 
97 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
98 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 1
99 #endif
100 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
101 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 2
102 #endif
103 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
104 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 4
105 #endif
106 #ifndef ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE
107 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 0
108 #endif
109 
110 #if (ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE))
111 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 1
112 #endif
113 #if (ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE))
114 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 2
115 #endif
116 #if (ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE))
117 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 4
118 #endif
119 #ifndef ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE
120 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 0
121 #endif
122 
123 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
124 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 1
125 #endif
126 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
127 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 2
128 #endif
129 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
130 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 4
131 #endif
132 #ifndef ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE
133 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 0
134 #endif
135 
136 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
137 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 1
138 #endif
139 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
140 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 2
141 #endif
142 #ifndef ASF_PAYLOAD_LENGTH_FIELD_SIZE
143 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 0
144 #endif
145 
146 #define PACKET_HEADER_MIN_SIZE \
147  (ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE + \
148  ASF_PACKET_ERROR_CORRECTION_DATA_SIZE + \
149  1 + /* Length Type Flags */ \
150  1 + /* Property Flags */ \
151  ASF_PPI_PACKET_LENGTH_FIELD_SIZE + \
152  ASF_PPI_SEQUENCE_FIELD_SIZE + \
153  ASF_PPI_PADDING_LENGTH_FIELD_SIZE + \
154  4 + /* Send Time Field */ \
155  2) /* Duration Field */
156 
157 // Replicated Data shall be at least 8 bytes long.
158 #define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08
159 
160 #define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \
161  (1 + /* Stream Number */ \
162  ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
163  ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
164  ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
165  ASF_PAYLOAD_REPLICATED_DATA_LENGTH)
166 
167 #define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \
168  (1 + /* Stream Number */ \
169  ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
170  ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
171  ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
172  ASF_PAYLOAD_REPLICATED_DATA_LENGTH + \
173  ASF_PAYLOAD_LENGTH_FIELD_SIZE)
174 
175 #define SINGLE_PAYLOAD_HEADERS \
176  (PACKET_HEADER_MIN_SIZE + \
177  PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD)
178 
179 #define MULTI_PAYLOAD_HEADERS \
180  (PACKET_HEADER_MIN_SIZE + \
181  1 + /* Payload Flags */ \
182  2 * PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS)
183 
184 #define DATA_HEADER_SIZE 50
185 
186 #define PACKET_SIZE_MAX 65536
187 #define PACKET_SIZE_MIN 100
188 
189 typedef struct ASFPayload {
190  uint8_t type;
191  uint16_t size;
192 } ASFPayload;
193 
194 typedef struct ASFStream {
195  int num;
196  unsigned char seq;
197  /* use for reading */
198  AVPacket pkt;
199  int frag_offset;
200  int packet_obj_size;
201  int timestamp;
202  int64_t duration;
203  int skip_to_key;
204  int pkt_clean;
205 
206  int ds_span; /* descrambling */
207  int ds_packet_size;
208  int ds_chunk_size;
209 
210  int64_t packet_pos;
211 
212  uint16_t stream_language_index;
213 
214  int palette_changed;
215  uint32_t palette[256];
216 
217  int payload_ext_ct;
218  ASFPayload payload[8];
219 } ASFStream;
220 
221 typedef struct ASFContext {
223  uint32_t seqno;
225  ASFStream streams[128]; ///< it's max number and it's not that big
226  const char *languages[128];
228  int64_t creation_time;
229  /* non-streamed additional info */
230  uint64_t nb_packets; ///< how many packets are there in the file, invalid if broadcasting
231  int64_t duration; ///< in 100ns units
232  /* packet filling */
233  unsigned char multi_payloads_present;
234  int packet_size_left;
237  unsigned int packet_nb_payloads;
240  /* only for reading */
241  uint64_t data_offset; ///< beginning of the first data packet
242 
245  uint16_t maximum_packet;
250  int end_sec;
252 } ASFContext;
253 
254 static const AVCodecTag codec_asf_bmp_tags[] = {
255  { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
256  { AV_CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
257  { AV_CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
258  { AV_CODEC_ID_NONE, 0 },
259 };
260 
261 #define PREROLL_TIME 3100
262 
263 static void put_str16(AVIOContext *s, const char *tag)
264 {
265  int len;
266  uint8_t *pb;
267  AVIOContext *dyn_buf;
268  if (avio_open_dyn_buf(&dyn_buf) < 0)
269  return;
270 
271  avio_put_str16le(dyn_buf, tag);
272  len = avio_close_dyn_buf(dyn_buf, &pb);
273  avio_wl16(s, len);
274  avio_write(s, pb, len);
275  av_freep(&pb);
276 }
277 
278 static int64_t put_header(AVIOContext *pb, const ff_asf_guid *g)
279 {
280  int64_t pos;
281 
282  pos = avio_tell(pb);
283  ff_put_guid(pb, g);
284  avio_wl64(pb, 24);
285  return pos;
286 }
287 
288 /* update header size */
289 static void end_header(AVIOContext *pb, int64_t pos)
290 {
291  int64_t pos1;
292 
293  pos1 = avio_tell(pb);
294  avio_seek(pb, pos + 16, SEEK_SET);
295  avio_wl64(pb, pos1 - pos);
296  avio_seek(pb, pos1, SEEK_SET);
297 }
298 
299 /* write an asf chunk (only used in streaming case) */
300 static void put_chunk(AVFormatContext *s, int type,
301  int payload_length, int flags)
302 {
303  ASFContext *asf = s->priv_data;
304  AVIOContext *pb = s->pb;
305  int length;
306 
307  length = payload_length + 8;
308  avio_wl16(pb, type);
309  avio_wl16(pb, length); // size
310  avio_wl32(pb, asf->seqno); // sequence number
311  avio_wl16(pb, flags); // unknown bytes
312  avio_wl16(pb, length); // size_confirm
313  asf->seqno++;
314 }
315 
316 /* convert from av time to windows time */
317 static int64_t unix_to_file_time(int64_t ti)
318 {
319  int64_t t;
320 
321  t = ti * INT64_C(10);
322  t += INT64_C(116444736000000000);
323  return t;
324 }
325 
326 static int32_t get_send_time(ASFContext *asf, int64_t pres_time, uint64_t *offset)
327 {
328  int i;
329  int32_t send_time = 0;
330  *offset = asf->data_offset + DATA_HEADER_SIZE;
331  for (i = 0; i < asf->next_start_sec; i++) {
332  if (pres_time <= asf->index_ptr[i].send_time)
333  break;
334  send_time = asf->index_ptr[i].send_time;
335  *offset = asf->index_ptr[i].offset;
336  }
337 
338  return send_time / 10000;
339 }
340 
342 {
343  ASFContext *asf = s->priv_data;
344  AVIOContext *pb = s->pb;
345  int i;
346  AVRational scale = {1, 10000000};
347  int64_t hpos = put_header(pb, &ff_asf_marker_header);
348 
349  ff_put_guid(pb, &ff_asf_reserved_4);// ASF spec mandates this reserved value
350  avio_wl32(pb, s->nb_chapters); // markers count
351  avio_wl16(pb, 0); // ASF spec mandates 0 for this
352  avio_wl16(pb, 0); // name length 0, no name given
353 
354  for (i = 0; i < s->nb_chapters; i++) {
355  AVChapter *c = s->chapters[i];
356  AVDictionaryEntry *t = av_dict_get(c->metadata, "title", NULL, 0);
357  int64_t pres_time = av_rescale_q(c->start, c->time_base, scale);
358  uint64_t offset;
359  int32_t send_time = get_send_time(asf, pres_time, &offset);
360  int len = 0, ret;
361  uint8_t *buf;
362  AVIOContext *dyn_buf;
363  if (t) {
364  if ((ret = avio_open_dyn_buf(&dyn_buf)) < 0)
365  return ret;
366  avio_put_str16le(dyn_buf, t->value);
367  len = avio_close_dyn_buf(dyn_buf, &buf);
368  }
369  avio_wl64(pb, offset); // offset of the packet with send_time
370  avio_wl64(pb, pres_time + PREROLL_TIME * 10000); // presentation time
371  avio_wl16(pb, 12 + len); // entry length
372  avio_wl32(pb, send_time); // send time
373  avio_wl32(pb, 0); // flags, should be 0
374  avio_wl32(pb, len / 2); // marker desc length in WCHARS!
375  if (t) {
376  avio_write(pb, buf, len); // marker desc
377  av_freep(&buf);
378  }
379  }
380  end_header(pb, hpos);
381  return 0;
382 }
383 
384 /* write the header (used two times if non streamed) */
385 static int asf_write_header1(AVFormatContext *s, int64_t file_size,
386  int64_t data_chunk_size)
387 {
388  ASFContext *asf = s->priv_data;
389  AVIOContext *pb = s->pb;
390  AVDictionaryEntry *tags[5];
391  int header_size, n, extra_size, extra_size2, wav_extra_size;
392  int has_title, has_aspect_ratio = 0;
393  int metadata_count;
394  AVCodecParameters *par;
395  int64_t header_offset, cur_pos, hpos;
396  int bit_rate;
397  int64_t duration;
398  int audio_language_counts[128] = { 0 };
399 
401 
402  tags[0] = av_dict_get(s->metadata, "title", NULL, 0);
403  tags[1] = av_dict_get(s->metadata, "author", NULL, 0);
404  tags[2] = av_dict_get(s->metadata, "copyright", NULL, 0);
405  tags[3] = av_dict_get(s->metadata, "comment", NULL, 0);
406  tags[4] = av_dict_get(s->metadata, "rating", NULL, 0);
407 
408  duration = asf->duration + PREROLL_TIME * 10000;
409  has_title = tags[0] || tags[1] || tags[2] || tags[3] || tags[4];
410 
411  if (!file_size) {
412  if (ff_parse_creation_time_metadata(s, &asf->creation_time, 0) != 0)
413  av_dict_set(&s->metadata, "creation_time", NULL, 0);
414  }
415 
416  metadata_count = av_dict_count(s->metadata);
417 
418  bit_rate = 0;
419  for (n = 0; n < s->nb_streams; n++) {
420  AVDictionaryEntry *entry;
421  par = s->streams[n]->codecpar;
422 
423  avpriv_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
424 
425  bit_rate += par->bit_rate;
426  if ( par->codec_type == AVMEDIA_TYPE_VIDEO
427  && par->sample_aspect_ratio.num > 0
428  && par->sample_aspect_ratio.den > 0)
429  has_aspect_ratio++;
430 
431  entry = av_dict_get(s->streams[n]->metadata, "language", NULL, 0);
432  if (entry) {
433  const char *iso6391lang = ff_convert_lang_to(entry->value, AV_LANG_ISO639_1);
434  if (iso6391lang) {
435  int i;
436  for (i = 0; i < asf->nb_languages; i++) {
437  if (!strcmp(asf->languages[i], iso6391lang)) {
438  asf->streams[n].stream_language_index = i;
439  break;
440  }
441  }
442  if (i >= asf->nb_languages) {
443  asf->languages[asf->nb_languages] = iso6391lang;
445  asf->nb_languages++;
446  }
447  if (par->codec_type == AVMEDIA_TYPE_AUDIO)
448  audio_language_counts[asf->streams[n].stream_language_index]++;
449  }
450  } else {
451  asf->streams[n].stream_language_index = 128;
452  }
453  }
454 
455  if (asf->is_streamed) {
456  put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
457  }
458 
460  avio_wl64(pb, -1); /* header length, will be patched after */
461  avio_wl32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */
462  avio_w8(pb, 1); /* ??? */
463  avio_w8(pb, 2); /* ??? */
464 
465  /* file header */
466  header_offset = avio_tell(pb);
467  hpos = put_header(pb, &ff_asf_file_header);
469  avio_wl64(pb, file_size);
471  avio_wl64(pb, asf->nb_packets); /* number of packets */
472  avio_wl64(pb, duration); /* end time stamp (in 100ns units) */
473  avio_wl64(pb, asf->duration); /* duration (in 100ns units) */
474  avio_wl64(pb, PREROLL_TIME); /* start time stamp */
475  avio_wl32(pb, (asf->is_streamed || !(pb->seekable & AVIO_SEEKABLE_NORMAL)) ? 3 : 2); /* ??? */
476  avio_wl32(pb, s->packet_size); /* packet size */
477  avio_wl32(pb, s->packet_size); /* packet size */
478  avio_wl32(pb, bit_rate ? bit_rate : -1); /* Maximum data rate in bps */
479  end_header(pb, hpos);
480 
481  /* header_extension */
482  hpos = put_header(pb, &ff_asf_head1_guid);
484  avio_wl16(pb, 6);
485  avio_wl32(pb, 0); /* length, to be filled later */
486  if (asf->nb_languages) {
487  int64_t hpos2;
488  int i;
489  int nb_audio_languages = 0;
490 
491  hpos2 = put_header(pb, &ff_asf_language_guid);
492  avio_wl16(pb, asf->nb_languages);
493  for (i = 0; i < asf->nb_languages; i++) {
494  avio_w8(pb, 6);
495  avio_put_str16le(pb, asf->languages[i]);
496  }
497  end_header(pb, hpos2);
498 
499  for (i = 0; i < asf->nb_languages; i++)
500  if (audio_language_counts[i])
501  nb_audio_languages++;
502 
503  if (nb_audio_languages > 1) {
506  avio_wl16(pb, nb_audio_languages);
507  for (i = 0; i < asf->nb_languages; i++) {
508  if (audio_language_counts[i]) {
509  avio_wl16(pb, audio_language_counts[i]);
510  for (n = 0; n < s->nb_streams; n++)
512  avio_wl16(pb, n + 1);
513  }
514  }
515  end_header(pb, hpos2);
516  }
517 
518  for (n = 0; n < s->nb_streams; n++) {
519  int64_t es_pos;
520  if (asf->streams[n].stream_language_index > 127)
521  continue;
523  avio_wl64(pb, 0); /* start time */
524  avio_wl64(pb, 0); /* end time */
525  avio_wl32(pb, s->streams[n]->codecpar->bit_rate); /* data bitrate bps */
526  avio_wl32(pb, 5000); /* buffer size ms */
527  avio_wl32(pb, 0); /* initial buffer fullness */
528  avio_wl32(pb, s->streams[n]->codecpar->bit_rate); /* peak data bitrate */
529  avio_wl32(pb, 5000); /* maximum buffer size ms */
530  avio_wl32(pb, 0); /* max initial buffer fullness */
531  avio_wl32(pb, 0); /* max object size */
532  avio_wl32(pb, (!asf->is_streamed && (pb->seekable & AVIO_SEEKABLE_NORMAL)) << 1); /* flags - seekable */
533  avio_wl16(pb, n + 1); /* stream number */
534  avio_wl16(pb, asf->streams[n].stream_language_index); /* language id index */
535  avio_wl64(pb, 0); /* avg time per frame */
536  avio_wl16(pb, 0); /* stream name count */
537  avio_wl16(pb, 0); /* payload extension system count */
538  end_header(pb, es_pos);
539  }
540  }
541  if (has_aspect_ratio) {
542  int64_t hpos2;
543  hpos2 = put_header(pb, &ff_asf_metadata_header);
544  avio_wl16(pb, 2 * has_aspect_ratio);
545  for (n = 0; n < s->nb_streams; n++) {
546  par = s->streams[n]->codecpar;
547  if ( par->codec_type == AVMEDIA_TYPE_VIDEO
548  && par->sample_aspect_ratio.num > 0
549  && par->sample_aspect_ratio.den > 0) {
550  AVRational sar = par->sample_aspect_ratio;
551  avio_wl16(pb, 0);
552  // the stream number is set like this below
553  avio_wl16(pb, n + 1);
554  avio_wl16(pb, 26); // name_len
555  avio_wl16(pb, 3); // value_type
556  avio_wl32(pb, 4); // value_len
557  avio_put_str16le(pb, "AspectRatioX");
558  avio_wl32(pb, sar.num);
559  avio_wl16(pb, 0);
560  // the stream number is set like this below
561  avio_wl16(pb, n + 1);
562  avio_wl16(pb, 26); // name_len
563  avio_wl16(pb, 3); // value_type
564  avio_wl32(pb, 4); // value_len
565  avio_put_str16le(pb, "AspectRatioY");
566  avio_wl32(pb, sar.den);
567  }
568  }
569  end_header(pb, hpos2);
570  }
571  {
572  int64_t pos1;
573  pos1 = avio_tell(pb);
574  avio_seek(pb, hpos + 42, SEEK_SET);
575  avio_wl32(pb, pos1 - hpos - 46);
576  avio_seek(pb, pos1, SEEK_SET);
577  }
578  end_header(pb, hpos);
579 
580  /* title and other info */
581  if (has_title) {
582  int len, ret;
583  uint8_t *buf;
584  AVIOContext *dyn_buf;
585 
586  if ((ret = avio_open_dyn_buf(&dyn_buf)) < 0)
587  return ret;
588 
589  hpos = put_header(pb, &ff_asf_comment_header);
590 
591  for (n = 0; n < FF_ARRAY_ELEMS(tags); n++) {
592  len = tags[n] ? avio_put_str16le(dyn_buf, tags[n]->value) : 0;
593  avio_wl16(pb, len);
594  }
595  len = avio_close_dyn_buf(dyn_buf, &buf);
596  avio_write(pb, buf, len);
597  av_freep(&buf);
598  end_header(pb, hpos);
599  }
600  if (metadata_count) {
603  avio_wl16(pb, metadata_count);
604  while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
605  put_str16(pb, tag->key);
606  avio_wl16(pb, 0);
607  put_str16(pb, tag->value);
608  }
609  end_header(pb, hpos);
610  }
611  /* chapters using ASF markers */
612  if (!asf->is_streamed && s->nb_chapters) {
613  int ret;
614  if ((ret = asf_write_markers(s)) < 0)
615  return ret;
616  }
617  /* stream headers */
618  for (n = 0; n < s->nb_streams; n++) {
619  int64_t es_pos;
620  // ASFStream *stream = &asf->streams[n];
621 
622  par = s->streams[n]->codecpar;
623  asf->streams[n].num = n + 1;
624  asf->streams[n].seq = 1;
625 
626  switch (par->codec_type) {
627  case AVMEDIA_TYPE_AUDIO:
628  wav_extra_size = 0;
629  extra_size = 18 + wav_extra_size;
630  extra_size2 = 8;
631  break;
632  default:
633  case AVMEDIA_TYPE_VIDEO:
634  wav_extra_size = par->extradata_size;
635  extra_size = 0x33 + wav_extra_size;
636  extra_size2 = 0;
637  break;
638  }
639 
640  hpos = put_header(pb, &ff_asf_stream_header);
641  if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
644  } else {
647  }
648  avio_wl64(pb, 0); /* ??? */
649  es_pos = avio_tell(pb);
650  avio_wl32(pb, extra_size); /* wav header len */
651  avio_wl32(pb, extra_size2); /* additional data len */
652  avio_wl16(pb, n + 1); /* stream number */
653  avio_wl32(pb, 0); /* ??? */
654 
655  if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
656  /* WAVEFORMATEX header */
657  int wavsize = ff_put_wav_header(s, pb, par, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX);
658 
659  if (wavsize < 0)
660  return -1;
661  if (wavsize != extra_size) {
662  cur_pos = avio_tell(pb);
663  avio_seek(pb, es_pos, SEEK_SET);
664  avio_wl32(pb, wavsize); /* wav header len */
665  avio_seek(pb, cur_pos, SEEK_SET);
666  }
667  /* ERROR Correction */
668  avio_w8(pb, 0x01);
669  if (par->codec_id == AV_CODEC_ID_ADPCM_G726 || !par->block_align) {
670  avio_wl16(pb, 0x0190);
671  avio_wl16(pb, 0x0190);
672  } else {
673  avio_wl16(pb, par->block_align);
674  avio_wl16(pb, par->block_align);
675  }
676  avio_wl16(pb, 0x01);
677  avio_w8(pb, 0x00);
678  } else {
679  avio_wl32(pb, par->width);
680  avio_wl32(pb, par->height);
681  avio_w8(pb, 2); /* ??? */
682  avio_wl16(pb, 40 + par->extradata_size); /* size */
683 
684  /* BITMAPINFOHEADER header */
685  ff_put_bmp_header(pb, par, 1, 0);
686  }
687  end_header(pb, hpos);
688  }
689 
690  /* media comments */
691 
694  avio_wl32(pb, s->nb_streams);
695  for (n = 0; n < s->nb_streams; n++) {
696  const AVCodecDescriptor *codec_desc;
697  const char *desc;
698 
699  par = s->streams[n]->codecpar;
700  codec_desc = avcodec_descriptor_get(par->codec_id);
701 
702  if (par->codec_type == AVMEDIA_TYPE_AUDIO)
703  avio_wl16(pb, 2);
704  else if (par->codec_type == AVMEDIA_TYPE_VIDEO)
705  avio_wl16(pb, 1);
706  else
707  avio_wl16(pb, -1);
708 
709  if (par->codec_id == AV_CODEC_ID_WMAV2)
710  desc = "Windows Media Audio V8";
711  else
712  desc = codec_desc ? codec_desc->name : NULL;
713 
714  if (desc) {
715  AVIOContext *dyn_buf;
716  uint8_t *buf;
717  int len, ret;
718 
719  if ((ret = avio_open_dyn_buf(&dyn_buf)) < 0)
720  return ret;
721 
722  avio_put_str16le(dyn_buf, desc);
723  len = avio_close_dyn_buf(dyn_buf, &buf);
724  avio_wl16(pb, len / 2); // "number of characters" = length in bytes / 2
725 
726  avio_write(pb, buf, len);
727  av_freep(&buf);
728  } else
729  avio_wl16(pb, 0);
730 
731  avio_wl16(pb, 0); /* no parameters */
732 
733  /* id */
734  if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
735  avio_wl16(pb, 2);
736  avio_wl16(pb, par->codec_tag);
737  } else {
738  avio_wl16(pb, 4);
739  avio_wl32(pb, par->codec_tag);
740  }
741  if (!par->codec_tag)
742  return -1;
743  }
744  end_header(pb, hpos);
745 
746  /* patch the header size fields */
747 
748  cur_pos = avio_tell(pb);
749  header_size = cur_pos - header_offset;
750  if (asf->is_streamed) {
751  header_size += 8 + 30 + DATA_HEADER_SIZE;
752 
753  avio_seek(pb, header_offset - 10 - 30, SEEK_SET);
754  avio_wl16(pb, header_size);
755  avio_seek(pb, header_offset - 2 - 30, SEEK_SET);
756  avio_wl16(pb, header_size);
757 
758  header_size -= 8 + 30 + DATA_HEADER_SIZE;
759  }
760  header_size += 24 + 6;
761  avio_seek(pb, header_offset - 14, SEEK_SET);
762  avio_wl64(pb, header_size);
763  avio_seek(pb, cur_pos, SEEK_SET);
764 
765  /* movie chunk, followed by packets of packet_size */
766  asf->data_offset = cur_pos;
768  avio_wl64(pb, data_chunk_size);
770  avio_wl64(pb, asf->nb_packets); /* nb packets */
771  avio_w8(pb, 1); /* ??? */
772  avio_w8(pb, 1); /* ??? */
773  return 0;
774 }
775 
777 {
778  ASFContext *asf = s->priv_data;
779 
780  s->packet_size = asf->packet_size;
781  s->max_interleave_delta = 0;
782  asf->nb_packets = 0;
783 
784  if (s->nb_streams > 127) {
785  av_log(s, AV_LOG_ERROR, "ASF can only handle 127 streams\n");
786  return AVERROR(EINVAL);
787  }
788 
789  asf->index_ptr = av_malloc(sizeof(ASFIndex) * ASF_INDEX_BLOCK);
790  if (!asf->index_ptr)
791  return AVERROR(ENOMEM);
793  asf->maximum_packet = 0;
794 
795  /* the data-chunk-size has to be 50 (DATA_HEADER_SIZE), which is
796  * data_size - asf->data_offset at the moment this function is done.
797  * It is needed to use asf as a streamable format. */
798  if (asf_write_header1(s, 0, DATA_HEADER_SIZE) < 0) {
799  //av_free(asf);
800  av_freep(&asf->index_ptr);
801  return -1;
802  }
803 
804  asf->packet_nb_payloads = 0;
805  asf->packet_timestamp_start = -1;
806  asf->packet_timestamp_end = -1;
807  ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
808  NULL, NULL, NULL, NULL);
809 
810  if (s->avoid_negative_ts < 0)
811  s->avoid_negative_ts = 1;
812 
813  return 0;
814 }
815 
817 {
818  ASFContext *asf = s->priv_data;
819 
820  asf->is_streamed = 1;
821 
822  return asf_write_header(s);
823 }
824 
826  unsigned sendtime, unsigned duration,
827  int nb_payloads, int padsize)
828 {
829  ASFContext *asf = s->priv_data;
830  AVIOContext *pb = s->pb;
831  int ppi_size, i;
832  int64_t start = avio_tell(pb);
833 
834  int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
835 
836  padsize -= PACKET_HEADER_MIN_SIZE;
837  if (asf->multi_payloads_present)
838  padsize--;
839  av_assert0(padsize >= 0);
840 
842  for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++)
843  avio_w8(pb, 0x0);
844 
845  if (asf->multi_payloads_present)
846  iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
847 
848  if (padsize > 0) {
849  if (padsize < 256)
850  iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
851  else
852  iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
853  }
854  avio_w8(pb, iLengthTypeFlags);
855 
857 
858  if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
859  avio_wl16(pb, padsize - 2);
860  if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
861  avio_w8(pb, padsize - 1);
862 
863  avio_wl32(pb, sendtime);
864  avio_wl16(pb, duration);
865  if (asf->multi_payloads_present)
866  avio_w8(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
867 
868  ppi_size = avio_tell(pb) - start;
869 
870  return ppi_size;
871 }
872 
874 {
875  ASFContext *asf = s->priv_data;
876  int packet_hdr_size, packet_filled_size;
877 
879 
880  if (asf->is_streamed)
881  put_chunk(s, 0x4424, s->packet_size, 0);
882 
883  packet_hdr_size = put_payload_parsing_info(s,
886  asf->packet_nb_payloads,
887  asf->packet_size_left);
888 
889  packet_filled_size = asf->packet_size - asf->packet_size_left;
890  av_assert0(packet_hdr_size <= asf->packet_size_left);
891  memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
892 
893  avio_write(s->pb, asf->packet_buf, s->packet_size - packet_hdr_size);
894 
896 
897  asf->nb_packets++;
898  asf->packet_nb_payloads = 0;
899  asf->packet_timestamp_start = -1;
900  asf->packet_timestamp_end = -1;
901  ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
902  NULL, NULL, NULL, NULL);
903 }
904 
906  int64_t presentation_time, int m_obj_size,
907  int m_obj_offset, int payload_len, int flags)
908 {
909  ASFContext *asf = s->priv_data;
910  AVIOContext *pb = &asf->pb;
911  int val;
912 
913  val = stream->num;
914  if (flags & AV_PKT_FLAG_KEY)
915  val |= ASF_PL_FLAG_KEY_FRAME;
916  avio_w8(pb, val);
917 
918  avio_w8(pb, stream->seq); // Media object number
919  avio_wl32(pb, m_obj_offset); // Offset Into Media Object
920 
921  // Replicated Data shall be at least 8 bytes long.
922  // The first 4 bytes of data shall contain the
923  // Size of the Media Object that the payload belongs to.
924  // The next 4 bytes of data shall contain the
925  // Presentation Time for the media object that the payload belongs to.
927 
928  avio_wl32(pb, m_obj_size); // Replicated Data - Media Object Size
929  avio_wl32(pb, (uint32_t) presentation_time); // Replicated Data - Presentation Time
930 
931  if (asf->multi_payloads_present) {
932  avio_wl16(pb, payload_len); // payload length
933  }
934 }
935 
936 static void put_frame(AVFormatContext *s, ASFStream *stream, AVStream *avst,
937  int64_t timestamp, const uint8_t *buf,
938  int m_obj_size, int flags)
939 {
940  ASFContext *asf = s->priv_data;
941  int m_obj_offset, payload_len, frag_len1;
942 
943  m_obj_offset = 0;
944  while (m_obj_offset < m_obj_size) {
945  payload_len = m_obj_size - m_obj_offset;
946  if (asf->packet_timestamp_start == -1) {
947  const int multi_payload_constant = (asf->packet_size - MULTI_PAYLOAD_HEADERS);
948  asf->multi_payloads_present = (payload_len < multi_payload_constant);
949 
950  asf->packet_size_left = asf->packet_size;
951  if (asf->multi_payloads_present) {
952  frag_len1 = multi_payload_constant - 1;
953  } else {
954  frag_len1 = asf->packet_size - SINGLE_PAYLOAD_HEADERS;
955  }
956  asf->packet_timestamp_start = timestamp;
957  } else {
958  // multi payloads
959  frag_len1 = asf->packet_size_left -
962 
963  if (frag_len1 < payload_len &&
965  flush_packet(s);
966  continue;
967  }
968  if (asf->packet_timestamp_start > INT64_MAX - UINT16_MAX ||
969  timestamp > asf->packet_timestamp_start + UINT16_MAX) {
970  flush_packet(s);
971  continue;
972  }
973  }
974  if (frag_len1 > 0) {
975  if (payload_len > frag_len1)
976  payload_len = frag_len1;
977  else if (payload_len == (frag_len1 - 1))
978  payload_len = frag_len1 - 2; // additional byte need to put padding length
979 
980  put_payload_header(s, stream, timestamp + PREROLL_TIME,
981  m_obj_size, m_obj_offset, payload_len, flags);
982  avio_write(&asf->pb, buf, payload_len);
983 
984  if (asf->multi_payloads_present)
986  else
988  asf->packet_timestamp_end = timestamp;
989 
990  asf->packet_nb_payloads++;
991  } else {
992  payload_len = 0;
993  }
994  m_obj_offset += payload_len;
995  buf += payload_len;
996 
997  if (!asf->multi_payloads_present)
998  flush_packet(s);
1000  flush_packet(s);
1002  flush_packet(s);
1003  }
1004  stream->seq++;
1005 }
1006 
1007 static int update_index(AVFormatContext *s, int start_sec,
1008  uint32_t packet_number, uint16_t packet_count,
1009  uint64_t packet_offset)
1010 {
1011  ASFContext *asf = s->priv_data;
1012 
1013  if (start_sec > asf->next_start_sec) {
1014  int i;
1015 
1016  if (!asf->next_start_sec) {
1017  asf->next_packet_number = packet_number;
1018  asf->next_packet_count = packet_count;
1019  asf->next_packet_offset = packet_offset;
1020  }
1021 
1022  if (start_sec > asf->nb_index_memory_alloc) {
1023  int err;
1024  asf->nb_index_memory_alloc = (start_sec + ASF_INDEX_BLOCK) & ~(ASF_INDEX_BLOCK - 1);
1025  if ((err = av_reallocp_array(&asf->index_ptr,
1026  asf->nb_index_memory_alloc,
1027  sizeof(*asf->index_ptr))) < 0) {
1028  asf->nb_index_memory_alloc = 0;
1029  return err;
1030  }
1031  }
1032  for (i = asf->next_start_sec; i < start_sec; i++) {
1035  asf->index_ptr[i].send_time = asf->next_start_sec * INT64_C(10000000);
1036  asf->index_ptr[i].offset = asf->next_packet_offset;
1037 
1038  }
1039  }
1040  asf->maximum_packet = FFMAX(asf->maximum_packet, packet_count);
1041  asf->next_packet_number = packet_number;
1042  asf->next_packet_count = packet_count;
1043  asf->next_packet_offset = packet_offset;
1044  asf->next_start_sec = start_sec;
1045 
1046  return 0;
1047 }
1048 
1050 {
1051  ASFContext *asf = s->priv_data;
1052  AVIOContext *pb = s->pb;
1053  ASFStream *stream;
1054  AVCodecParameters *par;
1055  uint32_t packet_number;
1056  int64_t pts;
1057  int start_sec;
1058  int flags = pkt->flags;
1059  int ret;
1060  uint64_t offset = avio_tell(pb);
1061 
1062  par = s->streams[pkt->stream_index]->codecpar;
1063  stream = &asf->streams[pkt->stream_index];
1064 
1065  if (par->codec_type == AVMEDIA_TYPE_AUDIO)
1066  flags &= ~AV_PKT_FLAG_KEY;
1067 
1068  pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
1069  av_assert0(pts != AV_NOPTS_VALUE);
1070  if ( pts < - PREROLL_TIME
1071  || pts > (INT_MAX-3)/10000LL * ASF_INDEXED_INTERVAL - PREROLL_TIME) {
1072  av_log(s, AV_LOG_ERROR, "input pts %"PRId64" is invalid\n", pts);
1073  return AVERROR(EINVAL);
1074  }
1075  pts *= 10000;
1076  asf->duration = FFMAX(asf->duration, pts + pkt->duration * 10000);
1077 
1078  packet_number = asf->nb_packets;
1079  put_frame(s, stream, s->streams[pkt->stream_index],
1080  pkt->dts, pkt->data, pkt->size, flags);
1081 
1082  start_sec = (int)((PREROLL_TIME * 10000 + pts + ASF_INDEXED_INTERVAL - 1)
1084 
1085  /* check index */
1086  if ((!asf->is_streamed) && (flags & AV_PKT_FLAG_KEY)) {
1087  uint16_t packet_count = asf->nb_packets - packet_number;
1088  ret = update_index(s, start_sec, packet_number, packet_count, offset);
1089  if (ret < 0)
1090  return ret;
1091  }
1092  asf->end_sec = start_sec;
1093 
1094  return 0;
1095 }
1096 
1098  uint16_t max, uint32_t count)
1099 {
1100  AVIOContext *pb = s->pb;
1101  int i;
1102 
1104  avio_wl64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2) * count);
1107  avio_wl32(pb, max);
1108  avio_wl32(pb, count);
1109  for (i = 0; i < count; i++) {
1110  avio_wl32(pb, index[i].packet_number);
1111  avio_wl16(pb, index[i].packet_count);
1112  }
1113 
1114  return 0;
1115 }
1116 
1118 {
1119  ASFContext *asf = s->priv_data;
1120  int64_t file_size, data_size;
1121  int ret;
1122 
1123  /* flush the current packet */
1124  if (asf->pb.buf_ptr > asf->pb.buffer)
1125  flush_packet(s);
1126 
1127  /* write index */
1128  data_size = avio_tell(s->pb);
1129  if (!asf->is_streamed && asf->next_start_sec) {
1130  if ((ret = update_index(s, asf->end_sec + 1, 0, 0, 0)) < 0)
1131  return ret;
1133  }
1134 
1135  if (asf->is_streamed || !(s->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
1136  put_chunk(s, 0x4524, 0, 0); /* end of stream */
1137  } else {
1138  /* rewrite an updated header */
1139  file_size = avio_tell(s->pb);
1140  avio_seek(s->pb, 0, SEEK_SET);
1141  asf_write_header1(s, file_size, data_size - asf->data_offset);
1142  }
1143 
1144  av_freep(&asf->index_ptr);
1145  return 0;
1146 }
1147 
1148 static const AVOption asf_options[] = {
1149  { "packet_size", "Packet size", offsetof(ASFContext, packet_size), AV_OPT_TYPE_INT, {.i64 = 3200}, PACKET_SIZE_MIN, PACKET_SIZE_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1150  { NULL },
1151 };
1152 
1153 #if CONFIG_ASF_MUXER
1154 static const AVClass asf_muxer_class = {
1155  .class_name = "ASF muxer",
1156  .item_name = av_default_item_name,
1157  .option = asf_options,
1158  .version = LIBAVUTIL_VERSION_INT,
1159 };
1160 
1162  .name = "asf",
1163  .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
1164  .mime_type = "video/x-ms-asf",
1165  .extensions = "asf,wmv,wma",
1166  .priv_data_size = sizeof(ASFContext),
1167  .audio_codec = AV_CODEC_ID_WMAV2,
1168  .video_codec = AV_CODEC_ID_MSMPEG4V3,
1173  .codec_tag = (const AVCodecTag * const []) {
1175  },
1176  .priv_class = &asf_muxer_class,
1177 };
1178 #endif /* CONFIG_ASF_MUXER */
1179 
1180 #if CONFIG_ASF_STREAM_MUXER
1181 static const AVClass asf_stream_muxer_class = {
1182  .class_name = "ASF stream muxer",
1183  .item_name = av_default_item_name,
1184  .option = asf_options,
1185  .version = LIBAVUTIL_VERSION_INT,
1186 };
1187 
1189  .name = "asf_stream",
1190  .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
1191  .mime_type = "video/x-ms-asf",
1192  .extensions = "asf,wmv,wma",
1193  .priv_data_size = sizeof(ASFContext),
1194  .audio_codec = AV_CODEC_ID_WMAV2,
1195  .video_codec = AV_CODEC_ID_MSMPEG4V3,
1200  .codec_tag = (const AVCodecTag * const []) {
1202  },
1203  .priv_class = &asf_stream_muxer_class,
1204 };
1205 #endif /* CONFIG_ASF_STREAM_MUXER */
unsigned int nb_chapters
Number of chapters in AVChapter array.
Definition: avformat.h:1580
const ff_asf_guid ff_asf_header
Definition: asf.c:23
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:702
unsigned int packet_size
Definition: avformat.h:1475
#define NULL
Definition: coverity.c:32
AVOutputFormat ff_asf_stream_muxer
void avio_wl16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:447
static int asf_write_markers(AVFormatContext *s)
Definition: asfenc.c:341
Bytestream IO Context.
Definition: avio.h:161
#define ASF_PAYLOAD_FLAGS
Definition: asfenc.c:56
const char * languages[128]
Definition: asfenc.c:226
int packet_size
Definition: asfenc.c:251
static void skip_to_key(AVFormatContext *s)
Definition: asfdec_f.c:1510
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1401
AVOption.
Definition: opt.h:246
void ff_put_bmp_header(AVIOContext *pb, AVCodecParameters *par, int for_asf, int ignore_extradata)
Definition: riffenc.c:209
int ff_put_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int flags)
Write WAVEFORMAT header structure.
Definition: riffenc.c:54
const ff_asf_guid ff_asf_codec_comment_header
Definition: asf.c:73
const ff_asf_guid ff_asf_metadata_header
Definition: asf.c:108
#define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD
Definition: asfenc.c:160
#define PACKET_SIZE_MIN
Definition: asfenc.c:187
void ff_put_guid(AVIOContext *s, const ff_asf_guid *g)
Definition: riffenc.c:349
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
unsigned char * buf_ptr
Current position in the buffer.
Definition: avio.h:228
unsigned int packet_nb_payloads
Definition: asfenc.c:237
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
const char * g
Definition: vf_curves.c:115
const char * desc
Definition: nvenc.c:79
int is_streamed
Definition: asfenc.c:224
#define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS
Definition: asfenc.c:167
int num
Definition: asfdec_f.c:48
AVRational sample_aspect_ratio
Video only.
Definition: codec_par.h:136
Definition: asf.h:65
static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: asfenc.c:1049
uint64_t data_offset
beginning of the first data packet
Definition: asfdec_f.c:85
int64_t creation_time
Definition: asfenc.c:228
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
static int asf_write_index(AVFormatContext *s, const ASFIndex *index, uint16_t max, uint32_t count)
Definition: asfenc.c:1097
int size
Definition: packet.h:356
uint32_t next_packet_number
Definition: asfenc.c:246
int av_dict_count(const AVDictionary *m)
Get number of entries in dictionary.
Definition: dict.c:35
uint32_t packet_size
Definition: asfdec_o.c:101
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
unsigned char * buffer
Start of the buffer.
Definition: avio.h:226
static int put_payload_parsing_info(AVFormatContext *s, unsigned sendtime, unsigned duration, int nb_payloads, int padsize)
Definition: asfenc.c:825
uint16_t maximum_packet
Definition: asfenc.c:245
static AVPacket pkt
static int asf_write_trailer(AVFormatContext *s)
Definition: asfenc.c:1117
uint64_t offset
Definition: asf.h:69
AVDictionary * metadata
Definition: avformat.h:1312
uint16_t next_packet_count
Definition: asfenc.c:247
uint32_t packet_number
Definition: asf.h:66
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1356
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
#define SINGLE_PAYLOAD_HEADERS
Definition: asfenc.c:175
const ff_asf_guid ff_asf_reserved_4
Definition: asf.c:120
Format I/O context.
Definition: avformat.h:1351
const ff_asf_guid ff_asf_data_header
Definition: asf.c:80
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
AVClass * av_class
Definition: asfenc.c:222
Public dictionary API.
#define ASF_INDEX_BLOCK
Definition: asfenc.c:34
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:367
AVIOContext pb
Definition: asfenc.c:239
uint8_t
#define av_malloc(s)
int width
Video only.
Definition: codec_par.h:126
const ff_asf_guid ff_asf_audio_stream
Definition: asf.c:39
const ff_asf_guid ff_asf_mutex_language
Definition: asf.c:154
AVOptions.
A point in the output bytestream where the underlying AVIOContext might flush the buffer depending on...
Definition: avio.h:146
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:373
static int asf_write_header(AVFormatContext *s)
Definition: asfenc.c:776
ASFStream streams[128]
it&#39;s max number and it&#39;s not that big
Definition: asfdec_f.c:77
void avio_write_marker(AVIOContext *s, int64_t time, enum AVIODataMarkerType type)
Mark the written bytestream as a specific type.
Definition: aviobuf.c:471
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1419
int64_t duration
Definition: movenc.c:63
int packet_size_left
Definition: asfdec_f.c:83
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
uint8_t * data
Definition: packet.h:355
int64_t max_interleave_delta
Maximum buffering duration for interleaving.
Definition: avformat.h:1653
uint32_t tag
Definition: movenc.c:1532
#define max(a, b)
Definition: cuda_runtime.h:33
#define ASF_PPI_LENGTH_TYPE_FLAGS
Definition: asfenc.c:54
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
#define av_log(a,...)
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
Definition: opt.h:276
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: codec_par.h:89
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:388
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
uint32_t seqno
Definition: asfenc.c:223
int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
Parse creation_time in AVFormatContext metadata if exists and warn if the parsing fails...
Definition: utils.c:5707
#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
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1591
#define PREROLL_TIME
Definition: asfenc.c:261
const ff_asf_guid ff_asf_head1_guid
Definition: asf.c:84
const ff_asf_guid ff_asf_simple_index_header
Definition: asf.c:96
const ff_asf_guid ff_asf_head2_guid
Definition: asf.c:88
static void put_payload_header(AVFormatContext *s, ASFStream *stream, int64_t presentation_time, int m_obj_size, int m_obj_offset, int payload_len, int flags)
Definition: asfenc.c:905
#define DATA_HEADER_SIZE
Definition: asfenc.c:184
#define AVERROR(e)
Definition: error.h:43
const char * ff_convert_lang_to(const char *lang, enum AVLangCodespace target_codespace)
Convert a language code to a target codespace.
Definition: avlanguage.c:736
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:188
unsigned int pos
Definition: spdifenc.c:412
int64_t packet_timestamp_start
Definition: asfenc.c:235
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
const ff_asf_guid ff_asf_video_conceal_none
Definition: asf.c:61
static const AVOption asf_options[]
Definition: asfenc.c:1148
AVChapter ** chapters
Definition: avformat.h:1581
simple assert() macros that are a bit more flexible than ISO C assert().
#define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD
Definition: asf.h:135
static const uint8_t offset[127][2]
Definition: vf_spp.c:93
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:506
#define FFMAX(a, b)
Definition: common.h:94
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:361
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:78
#define MULTI_PAYLOAD_HEADERS
Definition: asfenc.c:179
int av_reallocp_array(void *ptr, size_t nmemb, size_t size)
Allocate, reallocate, or free an array through a pointer to a pointer.
Definition: mem.c:206
#define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT
Definition: asf.h:127
uint16_t size
Definition: asfdec_f.c:44
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1407
int block_align
Audio only.
Definition: codec_par.h:177
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:260
uint64_t send_time
Definition: asf.h:68
const AVCodecTag ff_codec_bmp_tags[]
Definition: riff.c:32
static void put_chunk(AVFormatContext *s, int type, int payload_length, int flags)
Definition: asfenc.c:300
#define ASF_PACKET_ERROR_CORRECTION_FLAGS
Definition: asfenc.c:38
const ff_asf_guid ff_asf_extended_content_header
Definition: asf.c:92
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98
#define AVFMT_GLOBALHEADER
Format wants global header.
Definition: avformat.h:461
static int32_t get_send_time(ASFContext *asf, int64_t pres_time, uint64_t *offset)
Definition: asfenc.c:326
#define ASF_PAYLOADS_PER_PACKET
Definition: asfenc.c:35
const char * name
Definition: avformat.h:500
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
int32_t
#define ASF_PAYLOAD_REPLICATED_DATA_LENGTH
Definition: asfenc.c:158
int next_start_sec
Definition: asfenc.c:249
#define s(width, name)
Definition: cbs_vp9.c:257
int avoid_negative_ts
Avoid negative timestamps during muxing.
Definition: avformat.h:1682
AVDictionary * metadata
Definition: avformat.h:940
const ff_asf_guid ff_asf_my_guid
Definition: asf.c:126
#define FF_ARRAY_ELEMS(a)
#define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE
Definition: asf.h:134
const ff_asf_guid ff_asf_extended_stream_properties_object
Definition: asf.c:146
uint8_t ff_asf_guid[16]
Definition: riff.h:92
Stream structure.
Definition: avformat.h:876
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
#define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE
Definition: asfenc.c:37
#define ASF_PPI_PROPERTY_FLAGS
Definition: asfenc.c:48
const ff_asf_guid ff_asf_file_header
Definition: asf.c:27
AVIOContext * pb
I/O context.
Definition: avformat.h:1393
const ff_asf_guid ff_asf_video_stream
Definition: asf.c:53
int64_t packet_timestamp_end
Definition: asfenc.c:236
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:191
uint16_t stream_language_index
Definition: asfdec_f.c:65
AVOutputFormat ff_asf_muxer
static void flush_packet(AVFormatContext *s)
Definition: asfenc.c:873
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
double value
Definition: eval.c:98
Describe the class of an AVClass context structure.
Definition: log.h:67
int index
Definition: gxfenc.c:89
Rational number (pair of numerator and denominator).
Definition: rational.h:58
const ff_asf_guid ff_asf_stream_header
Definition: asf.c:31
static const AVCodecTag codec_asf_bmp_tags[]
Definition: asfenc.c:254
int avio_put_str16le(AVIOContext *s, const char *str)
Convert an UTF-8 string to UTF-16LE and write it.
const AVMetadataConv ff_asf_metadata_conv[]
Definition: asf.c:159
const char * name
Name of the codec described by this descriptor.
Definition: codec_desc.h:46
static int64_t put_header(AVIOContext *pb, const ff_asf_guid *g)
Definition: asfenc.c:278
#define PACKET_SIZE_MAX
Definition: asfenc.c:186
int64_t duration
in 100ns units
Definition: asfenc.c:231
const ff_asf_guid ff_asf_group_mutual_exclusion_object
Definition: asf.c:150
static int64_t unix_to_file_time(int64_t ti)
Definition: asfenc.c:317
This struct describes the properties of a single codec described by an AVCodecID. ...
Definition: codec_desc.h:38
#define ASF_INDEXED_INTERVAL
Definition: asfenc.c:33
const ff_asf_guid ff_asf_comment_header
Definition: asf.c:69
static void put_frame(AVFormatContext *s, ASFStream *stream, AVStream *avst, int64_t timestamp, const uint8_t *buf, int m_obj_size, int flags)
Definition: asfenc.c:936
static int64_t pts
#define flags(name, subs,...)
Definition: cbs_av1.c:565
ASFIndex * index_ptr
Definition: asfenc.c:243
uint8_t type
Definition: asfdec_f.c:43
int64_t start
Definition: avformat.h:1311
int nb_languages
Definition: asfenc.c:227
const ff_asf_guid ff_asf_language_guid
Definition: asf.c:130
Main libavformat public API header.
int
static void end_header(AVIOContext *pb, int64_t pos)
Definition: asfenc.c:289
uint8_t packet_buf[PACKET_SIZE_MAX]
Definition: asfenc.c:238
#define ASF_PL_FLAG_KEY_FRAME
Definition: asf.h:167
int ffio_init_context(AVIOContext *s, unsigned char *buffer, int buffer_size, int write_flag, void *opaque, int(*read_packet)(void *opaque, uint8_t *buf, int buf_size), int(*write_packet)(void *opaque, uint8_t *buf, int buf_size), int64_t(*seek)(void *opaque, int64_t offset, int whence))
Definition: aviobuf.c:76
uint64_t nb_packets
how many packets are there in the file, invalid if broadcasting
Definition: asfdec_o.c:100
static double c[64]
unsigned char seq
Definition: asfdec_f.c:49
const ff_asf_guid ff_asf_audio_conceal_spread
Definition: asf.c:49
const ff_asf_guid ff_asf_codec_comment1_header
Definition: asf.c:76
AVRational time_base
time base in which the start/end timestamps are specified
Definition: avformat.h:1310
char * key
Definition: dict.h:86
int den
Denominator.
Definition: rational.h:60
void ff_metadata_conv(AVDictionary **pm, const AVMetadataConv *d_conv, const AVMetadataConv *s_conv)
Definition: metadata.c:26
static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size)
Definition: asfenc.c:385
char * value
Definition: dict.h:87
int len
void * priv_data
Format private data.
Definition: avformat.h:1379
uint32_t nb_index_memory_alloc
Definition: asfenc.c:244
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:346
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
Definition: codec_desc.c:3394
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: packet.h:354
int duration
Definition: asfdec_o.c:103
static int asf_write_stream_header(AVFormatContext *s)
Definition: asfenc.c:816
#define av_freep(p)
static void put_str16(AVIOContext *s, const char *tag)
Definition: asfenc.c:263
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key, ignoring the suffix of the found key string.
Definition: dict.h:70
uint16_t packet_count
Definition: asf.h:67
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
#define PACKET_HEADER_MIN_SIZE
Definition: asfenc.c:146
const ff_asf_guid ff_asf_marker_header
Definition: asf.c:116
int stream_index
Definition: packet.h:357
int end_sec
Definition: asfenc.c:250
static int update_index(AVFormatContext *s, int start_sec, uint32_t packet_number, uint16_t packet_count, uint64_t packet_offset)
Definition: asfenc.c:1007
unsigned char multi_payloads_present
Definition: asfenc.c:233
#define MKTAG(a, b, c, d)
Definition: common.h:406
static double val(void *priv, double ch)
Definition: aeval.c:76
This structure stores compressed data.
Definition: packet.h:332
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:348
uint64_t next_packet_offset
Definition: asfenc.c:248
3-char terminological language codes as per ISO-IEC 639-2
Definition: avlanguage.h:33
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
#define FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX
Tell ff_put_wav_header() to use WAVEFORMATEX even for PCM codecs.
Definition: riff.h:54