FFmpeg
asfenc.c
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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 {
222  AVClass *av_class;
223  uint32_t seqno;
224  int is_streamed;
225  ASFStream streams[128]; ///< it's max number and it's not that big
226  const char *languages[128];
227  int nb_languages;
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;
235  int64_t packet_timestamp_start;
236  int64_t packet_timestamp_end;
237  unsigned int packet_nb_payloads;
238  uint8_t packet_buf[PACKET_SIZE_MAX];
239  AVIOContext pb;
240  /* only for reading */
241  uint64_t data_offset; ///< beginning of the first data packet
242 
243  ASFIndex *index_ptr;
244  uint32_t nb_index_memory_alloc;
245  uint16_t maximum_packet;
246  uint32_t next_packet_number;
247  uint16_t next_packet_count;
248  uint64_t next_packet_offset;
249  int next_start_sec;
250  int end_sec;
251  int packet_size;
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 static const AVCodecTag *const asf_codec_tags[] = {
262  codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, NULL
263 };
264 
265 #define PREROLL_TIME 3100
266 
267 static void put_str16(AVIOContext *s, const char *tag)
268 {
269  int len;
270  uint8_t *pb;
271  AVIOContext *dyn_buf;
272  if (avio_open_dyn_buf(&dyn_buf) < 0)
273  return;
274 
275  avio_put_str16le(dyn_buf, tag);
276  len = avio_close_dyn_buf(dyn_buf, &pb);
277  avio_wl16(s, len);
278  avio_write(s, pb, len);
279  av_freep(&pb);
280 }
281 
282 static int64_t put_header(AVIOContext *pb, const ff_asf_guid *g)
283 {
284  int64_t pos;
285 
286  pos = avio_tell(pb);
287  ff_put_guid(pb, g);
288  avio_wl64(pb, 24);
289  return pos;
290 }
291 
292 /* update header size */
293 static void end_header(AVIOContext *pb, int64_t pos)
294 {
295  int64_t pos1;
296 
297  pos1 = avio_tell(pb);
298  avio_seek(pb, pos + 16, SEEK_SET);
299  avio_wl64(pb, pos1 - pos);
300  avio_seek(pb, pos1, SEEK_SET);
301 }
302 
303 /* write an asf chunk (only used in streaming case) */
304 static void put_chunk(AVFormatContext *s, int type,
305  int payload_length, int flags)
306 {
307  ASFContext *asf = s->priv_data;
308  AVIOContext *pb = s->pb;
309  int length;
310 
311  length = payload_length + 8;
312  avio_wl16(pb, type);
313  avio_wl16(pb, length); // size
314  avio_wl32(pb, asf->seqno); // sequence number
315  avio_wl16(pb, flags); // unknown bytes
316  avio_wl16(pb, length); // size_confirm
317  asf->seqno++;
318 }
319 
320 /* convert from av time to windows time */
321 static int64_t unix_to_file_time(int64_t ti)
322 {
323  int64_t t;
324 
325  t = ti * INT64_C(10);
326  t += INT64_C(116444736000000000);
327  return t;
328 }
329 
330 static int32_t get_send_time(ASFContext *asf, int64_t pres_time, uint64_t *offset)
331 {
332  int i;
333  int32_t send_time = 0;
334  *offset = asf->data_offset + DATA_HEADER_SIZE;
335  for (i = 0; i < asf->next_start_sec; i++) {
336  if (pres_time <= asf->index_ptr[i].send_time)
337  break;
338  send_time = asf->index_ptr[i].send_time;
339  *offset = asf->index_ptr[i].offset;
340  }
341 
342  return send_time / 10000;
343 }
344 
345 static int asf_write_markers(AVFormatContext *s)
346 {
347  ASFContext *asf = s->priv_data;
348  AVIOContext *pb = s->pb;
349  int i;
350  AVRational scale = {1, 10000000};
351  int64_t hpos = put_header(pb, &ff_asf_marker_header);
352 
353  ff_put_guid(pb, &ff_asf_reserved_4);// ASF spec mandates this reserved value
354  avio_wl32(pb, s->nb_chapters); // markers count
355  avio_wl16(pb, 0); // ASF spec mandates 0 for this
356  avio_wl16(pb, 0); // name length 0, no name given
357 
358  for (i = 0; i < s->nb_chapters; i++) {
359  AVChapter *c = s->chapters[i];
360  AVDictionaryEntry *t = av_dict_get(c->metadata, "title", NULL, 0);
361  int64_t pres_time = av_rescale_q(c->start, c->time_base, scale);
362  uint64_t offset;
363  int32_t send_time = get_send_time(asf, pres_time, &offset);
364  int len = 0, ret;
365  uint8_t *buf;
366  AVIOContext *dyn_buf;
367  if (t) {
368  if ((ret = avio_open_dyn_buf(&dyn_buf)) < 0)
369  return ret;
370  avio_put_str16le(dyn_buf, t->value);
371  len = avio_close_dyn_buf(dyn_buf, &buf);
372  }
373  avio_wl64(pb, offset); // offset of the packet with send_time
374  avio_wl64(pb, pres_time + PREROLL_TIME * 10000); // presentation time
375  avio_wl16(pb, 12 + len); // entry length
376  avio_wl32(pb, send_time); // send time
377  avio_wl32(pb, 0); // flags, should be 0
378  avio_wl32(pb, len / 2); // marker desc length in WCHARS!
379  if (t) {
380  avio_write(pb, buf, len); // marker desc
381  av_freep(&buf);
382  }
383  }
384  end_header(pb, hpos);
385  return 0;
386 }
387 
388 /* write the header (used two times if non streamed) */
389 static int asf_write_header1(AVFormatContext *s, int64_t file_size,
390  int64_t data_chunk_size)
391 {
392  ASFContext *asf = s->priv_data;
393  AVIOContext *pb = s->pb;
394  AVDictionaryEntry *tags[5];
395  int header_size, n, extra_size, extra_size2, wav_extra_size;
396  int has_title, has_aspect_ratio = 0;
397  int metadata_count;
398  AVCodecParameters *par;
399  int64_t header_offset, cur_pos, hpos;
400  int bit_rate;
401  int64_t duration;
402  int audio_language_counts[128] = { 0 };
403 
404  ff_metadata_conv(&s->metadata, ff_asf_metadata_conv, NULL);
405 
406  tags[0] = av_dict_get(s->metadata, "title", NULL, 0);
407  tags[1] = av_dict_get(s->metadata, "author", NULL, 0);
408  tags[2] = av_dict_get(s->metadata, "copyright", NULL, 0);
409  tags[3] = av_dict_get(s->metadata, "comment", NULL, 0);
410  tags[4] = av_dict_get(s->metadata, "rating", NULL, 0);
411 
412  duration = asf->duration + PREROLL_TIME * 10000;
413  has_title = tags[0] || tags[1] || tags[2] || tags[3] || tags[4];
414 
415  if (!file_size) {
416  if (ff_parse_creation_time_metadata(s, &asf->creation_time, 0) != 0)
417  av_dict_set(&s->metadata, "creation_time", NULL, 0);
418  }
419 
420  metadata_count = av_dict_count(s->metadata);
421 
422  bit_rate = 0;
423  for (n = 0; n < s->nb_streams; n++) {
424  AVDictionaryEntry *entry;
425  par = s->streams[n]->codecpar;
426 
427  avpriv_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
428 
429  bit_rate += par->bit_rate;
430  if ( par->codec_type == AVMEDIA_TYPE_VIDEO
431  && par->sample_aspect_ratio.num > 0
432  && par->sample_aspect_ratio.den > 0)
433  has_aspect_ratio++;
434 
435  entry = av_dict_get(s->streams[n]->metadata, "language", NULL, 0);
436  if (entry) {
437  const char *iso6391lang = ff_convert_lang_to(entry->value, AV_LANG_ISO639_1);
438  if (iso6391lang) {
439  int i;
440  for (i = 0; i < asf->nb_languages; i++) {
441  if (!strcmp(asf->languages[i], iso6391lang)) {
442  asf->streams[n].stream_language_index = i;
443  break;
444  }
445  }
446  if (i >= asf->nb_languages) {
447  asf->languages[asf->nb_languages] = iso6391lang;
448  asf->streams[n].stream_language_index = asf->nb_languages;
449  asf->nb_languages++;
450  }
451  if (par->codec_type == AVMEDIA_TYPE_AUDIO)
452  audio_language_counts[asf->streams[n].stream_language_index]++;
453  }
454  } else {
455  asf->streams[n].stream_language_index = 128;
456  }
457  }
458 
459  if (asf->is_streamed) {
460  put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
461  }
462 
463  ff_put_guid(pb, &ff_asf_header);
464  avio_wl64(pb, -1); /* header length, will be patched after */
465  avio_wl32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */
466  avio_w8(pb, 1); /* ??? */
467  avio_w8(pb, 2); /* ??? */
468 
469  /* file header */
470  header_offset = avio_tell(pb);
471  hpos = put_header(pb, &ff_asf_file_header);
472  ff_put_guid(pb, &ff_asf_my_guid);
473  avio_wl64(pb, file_size);
474  avio_wl64(pb, unix_to_file_time(asf->creation_time));
475  avio_wl64(pb, asf->nb_packets); /* number of packets */
476  avio_wl64(pb, duration); /* end time stamp (in 100ns units) */
477  avio_wl64(pb, asf->duration); /* duration (in 100ns units) */
478  avio_wl64(pb, PREROLL_TIME); /* start time stamp */
479  avio_wl32(pb, (asf->is_streamed || !(pb->seekable & AVIO_SEEKABLE_NORMAL)) ? 3 : 2); /* ??? */
480  avio_wl32(pb, s->packet_size); /* packet size */
481  avio_wl32(pb, s->packet_size); /* packet size */
482  avio_wl32(pb, bit_rate ? bit_rate : -1); /* Maximum data rate in bps */
483  end_header(pb, hpos);
484 
485  /* header_extension */
486  hpos = put_header(pb, &ff_asf_head1_guid);
487  ff_put_guid(pb, &ff_asf_head2_guid);
488  avio_wl16(pb, 6);
489  avio_wl32(pb, 0); /* length, to be filled later */
490  if (asf->nb_languages) {
491  int64_t hpos2;
492  int i;
493  int nb_audio_languages = 0;
494 
495  hpos2 = put_header(pb, &ff_asf_language_guid);
496  avio_wl16(pb, asf->nb_languages);
497  for (i = 0; i < asf->nb_languages; i++) {
498  avio_w8(pb, 6);
499  avio_put_str16le(pb, asf->languages[i]);
500  }
501  end_header(pb, hpos2);
502 
503  for (i = 0; i < asf->nb_languages; i++)
504  if (audio_language_counts[i])
505  nb_audio_languages++;
506 
507  if (nb_audio_languages > 1) {
508  hpos2 = put_header(pb, &ff_asf_group_mutual_exclusion_object);
509  ff_put_guid(pb, &ff_asf_mutex_language);
510  avio_wl16(pb, nb_audio_languages);
511  for (i = 0; i < asf->nb_languages; i++) {
512  if (audio_language_counts[i]) {
513  avio_wl16(pb, audio_language_counts[i]);
514  for (n = 0; n < s->nb_streams; n++)
515  if (asf->streams[n].stream_language_index == i && s->streams[n]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
516  avio_wl16(pb, n + 1);
517  }
518  }
519  end_header(pb, hpos2);
520  }
521 
522  for (n = 0; n < s->nb_streams; n++) {
523  int64_t es_pos;
524  if (asf->streams[n].stream_language_index > 127)
525  continue;
526  es_pos = put_header(pb, &ff_asf_extended_stream_properties_object);
527  avio_wl64(pb, 0); /* start time */
528  avio_wl64(pb, 0); /* end time */
529  avio_wl32(pb, s->streams[n]->codecpar->bit_rate); /* data bitrate bps */
530  avio_wl32(pb, 5000); /* buffer size ms */
531  avio_wl32(pb, 0); /* initial buffer fullness */
532  avio_wl32(pb, s->streams[n]->codecpar->bit_rate); /* peak data bitrate */
533  avio_wl32(pb, 5000); /* maximum buffer size ms */
534  avio_wl32(pb, 0); /* max initial buffer fullness */
535  avio_wl32(pb, 0); /* max object size */
536  avio_wl32(pb, (!asf->is_streamed && (pb->seekable & AVIO_SEEKABLE_NORMAL)) << 1); /* flags - seekable */
537  avio_wl16(pb, n + 1); /* stream number */
538  avio_wl16(pb, asf->streams[n].stream_language_index); /* language id index */
539  avio_wl64(pb, 0); /* avg time per frame */
540  avio_wl16(pb, 0); /* stream name count */
541  avio_wl16(pb, 0); /* payload extension system count */
542  end_header(pb, es_pos);
543  }
544  }
545  if (has_aspect_ratio) {
546  int64_t hpos2;
547  hpos2 = put_header(pb, &ff_asf_metadata_header);
548  avio_wl16(pb, 2 * has_aspect_ratio);
549  for (n = 0; n < s->nb_streams; n++) {
550  par = s->streams[n]->codecpar;
551  if ( par->codec_type == AVMEDIA_TYPE_VIDEO
552  && par->sample_aspect_ratio.num > 0
553  && par->sample_aspect_ratio.den > 0) {
554  AVRational sar = par->sample_aspect_ratio;
555  avio_wl16(pb, 0);
556  // the stream number is set like this below
557  avio_wl16(pb, n + 1);
558  avio_wl16(pb, 26); // name_len
559  avio_wl16(pb, 3); // value_type
560  avio_wl32(pb, 4); // value_len
561  avio_put_str16le(pb, "AspectRatioX");
562  avio_wl32(pb, sar.num);
563  avio_wl16(pb, 0);
564  // the stream number is set like this below
565  avio_wl16(pb, n + 1);
566  avio_wl16(pb, 26); // name_len
567  avio_wl16(pb, 3); // value_type
568  avio_wl32(pb, 4); // value_len
569  avio_put_str16le(pb, "AspectRatioY");
570  avio_wl32(pb, sar.den);
571  }
572  }
573  end_header(pb, hpos2);
574  }
575  {
576  int64_t pos1;
577  pos1 = avio_tell(pb);
578  avio_seek(pb, hpos + 42, SEEK_SET);
579  avio_wl32(pb, pos1 - hpos - 46);
580  avio_seek(pb, pos1, SEEK_SET);
581  }
582  end_header(pb, hpos);
583 
584  /* title and other info */
585  if (has_title) {
586  int len, ret;
587  uint8_t *buf;
588  AVIOContext *dyn_buf;
589 
590  if ((ret = avio_open_dyn_buf(&dyn_buf)) < 0)
591  return ret;
592 
593  hpos = put_header(pb, &ff_asf_comment_header);
594 
595  for (n = 0; n < FF_ARRAY_ELEMS(tags); n++) {
596  len = tags[n] ? avio_put_str16le(dyn_buf, tags[n]->value) : 0;
597  avio_wl16(pb, len);
598  }
599  len = avio_close_dyn_buf(dyn_buf, &buf);
600  avio_write(pb, buf, len);
601  av_freep(&buf);
602  end_header(pb, hpos);
603  }
604  if (metadata_count) {
605  AVDictionaryEntry *tag = NULL;
606  hpos = put_header(pb, &ff_asf_extended_content_header);
607  avio_wl16(pb, metadata_count);
608  while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
609  put_str16(pb, tag->key);
610  avio_wl16(pb, 0);
611  put_str16(pb, tag->value);
612  }
613  end_header(pb, hpos);
614  }
615  /* chapters using ASF markers */
616  if (!asf->is_streamed && s->nb_chapters) {
617  int ret;
618  if ((ret = asf_write_markers(s)) < 0)
619  return ret;
620  }
621  /* stream headers */
622  for (n = 0; n < s->nb_streams; n++) {
623  int64_t es_pos;
624  // ASFStream *stream = &asf->streams[n];
625 
626  par = s->streams[n]->codecpar;
627  asf->streams[n].num = n + 1;
628  asf->streams[n].seq = 1;
629 
630  switch (par->codec_type) {
631  case AVMEDIA_TYPE_AUDIO:
632  wav_extra_size = 0;
633  extra_size = 18 + wav_extra_size;
634  extra_size2 = 8;
635  break;
636  default:
637  case AVMEDIA_TYPE_VIDEO:
638  wav_extra_size = par->extradata_size;
639  extra_size = 0x33 + wav_extra_size;
640  extra_size2 = 0;
641  break;
642  }
643 
644  hpos = put_header(pb, &ff_asf_stream_header);
645  if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
646  ff_put_guid(pb, &ff_asf_audio_stream);
647  ff_put_guid(pb, &ff_asf_audio_conceal_spread);
648  } else {
649  ff_put_guid(pb, &ff_asf_video_stream);
650  ff_put_guid(pb, &ff_asf_video_conceal_none);
651  }
652  avio_wl64(pb, 0); /* ??? */
653  es_pos = avio_tell(pb);
654  avio_wl32(pb, extra_size); /* wav header len */
655  avio_wl32(pb, extra_size2); /* additional data len */
656  avio_wl16(pb, n + 1); /* stream number */
657  avio_wl32(pb, 0); /* ??? */
658 
659  if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
660  /* WAVEFORMATEX header */
661  int wavsize = ff_put_wav_header(s, pb, par, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX);
662 
663  if (wavsize < 0)
664  return -1;
665  if (wavsize != extra_size) {
666  cur_pos = avio_tell(pb);
667  avio_seek(pb, es_pos, SEEK_SET);
668  avio_wl32(pb, wavsize); /* wav header len */
669  avio_seek(pb, cur_pos, SEEK_SET);
670  }
671  /* ERROR Correction */
672  avio_w8(pb, 0x01);
673  if (par->codec_id == AV_CODEC_ID_ADPCM_G726 || !par->block_align) {
674  avio_wl16(pb, 0x0190);
675  avio_wl16(pb, 0x0190);
676  } else {
677  avio_wl16(pb, par->block_align);
678  avio_wl16(pb, par->block_align);
679  }
680  avio_wl16(pb, 0x01);
681  avio_w8(pb, 0x00);
682  } else {
683  avio_wl32(pb, par->width);
684  avio_wl32(pb, par->height);
685  avio_w8(pb, 2); /* ??? */
686  avio_wl16(pb, 40 + par->extradata_size); /* size */
687 
688  /* BITMAPINFOHEADER header */
689  ff_put_bmp_header(pb, par, 1, 0, 0);
690  }
691  end_header(pb, hpos);
692  }
693 
694  /* media comments */
695 
696  hpos = put_header(pb, &ff_asf_codec_comment_header);
697  ff_put_guid(pb, &ff_asf_codec_comment1_header);
698  avio_wl32(pb, s->nb_streams);
699  for (n = 0; n < s->nb_streams; n++) {
700  const AVCodecDescriptor *codec_desc;
701  const char *desc;
702 
703  par = s->streams[n]->codecpar;
704  codec_desc = avcodec_descriptor_get(par->codec_id);
705 
706  if (par->codec_type == AVMEDIA_TYPE_AUDIO)
707  avio_wl16(pb, 2);
708  else if (par->codec_type == AVMEDIA_TYPE_VIDEO)
709  avio_wl16(pb, 1);
710  else
711  avio_wl16(pb, -1);
712 
713  if (par->codec_id == AV_CODEC_ID_WMAV2)
714  desc = "Windows Media Audio V8";
715  else
716  desc = codec_desc ? codec_desc->name : NULL;
717 
718  if (desc) {
719  AVIOContext *dyn_buf;
720  uint8_t *buf;
721  int len, ret;
722 
723  if ((ret = avio_open_dyn_buf(&dyn_buf)) < 0)
724  return ret;
725 
726  avio_put_str16le(dyn_buf, desc);
727  len = avio_close_dyn_buf(dyn_buf, &buf);
728  avio_wl16(pb, len / 2); // "number of characters" = length in bytes / 2
729 
730  avio_write(pb, buf, len);
731  av_freep(&buf);
732  } else
733  avio_wl16(pb, 0);
734 
735  avio_wl16(pb, 0); /* no parameters */
736 
737  /* id */
738  if (par->codec_type == AVMEDIA_TYPE_AUDIO) {
739  avio_wl16(pb, 2);
740  avio_wl16(pb, par->codec_tag);
741  } else {
742  avio_wl16(pb, 4);
743  avio_wl32(pb, par->codec_tag);
744  }
745  if (!par->codec_tag)
746  return -1;
747  }
748  end_header(pb, hpos);
749 
750  /* patch the header size fields */
751 
752  cur_pos = avio_tell(pb);
753  header_size = cur_pos - header_offset;
754  if (asf->is_streamed) {
755  header_size += 8 + 30 + DATA_HEADER_SIZE;
756 
757  avio_seek(pb, header_offset - 10 - 30, SEEK_SET);
758  avio_wl16(pb, header_size);
759  avio_seek(pb, header_offset - 2 - 30, SEEK_SET);
760  avio_wl16(pb, header_size);
761 
762  header_size -= 8 + 30 + DATA_HEADER_SIZE;
763  }
764  header_size += 24 + 6;
765  avio_seek(pb, header_offset - 14, SEEK_SET);
766  avio_wl64(pb, header_size);
767  avio_seek(pb, cur_pos, SEEK_SET);
768 
769  /* movie chunk, followed by packets of packet_size */
770  asf->data_offset = cur_pos;
771  ff_put_guid(pb, &ff_asf_data_header);
772  avio_wl64(pb, data_chunk_size);
773  ff_put_guid(pb, &ff_asf_my_guid);
774  avio_wl64(pb, asf->nb_packets); /* nb packets */
775  avio_w8(pb, 1); /* ??? */
776  avio_w8(pb, 1); /* ??? */
777  return 0;
778 }
779 
780 static int asf_write_header(AVFormatContext *s)
781 {
782  ASFContext *asf = s->priv_data;
783 
784  s->packet_size = asf->packet_size;
785  s->max_interleave_delta = 0;
786  asf->nb_packets = 0;
787 
788  if (s->nb_streams > 127) {
789  av_log(s, AV_LOG_ERROR, "ASF can only handle 127 streams\n");
790  return AVERROR(EINVAL);
791  }
792 
793  asf->index_ptr = av_malloc(sizeof(ASFIndex) * ASF_INDEX_BLOCK);
794  if (!asf->index_ptr)
795  return AVERROR(ENOMEM);
796  asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
797  asf->maximum_packet = 0;
798 
799  /* the data-chunk-size has to be 50 (DATA_HEADER_SIZE), which is
800  * data_size - asf->data_offset at the moment this function is done.
801  * It is needed to use asf as a streamable format. */
802  if (asf_write_header1(s, 0, DATA_HEADER_SIZE) < 0) {
803  //av_free(asf);
804  av_freep(&asf->index_ptr);
805  return -1;
806  }
807 
808  asf->packet_nb_payloads = 0;
809  asf->packet_timestamp_start = -1;
810  asf->packet_timestamp_end = -1;
811  ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
812  NULL, NULL, NULL, NULL);
813 
814  if (s->avoid_negative_ts < 0)
815  s->avoid_negative_ts = 1;
816 
817  return 0;
818 }
819 
820 static int asf_write_stream_header(AVFormatContext *s)
821 {
822  ASFContext *asf = s->priv_data;
823 
824  asf->is_streamed = 1;
825 
826  return asf_write_header(s);
827 }
828 
829 static int put_payload_parsing_info(AVFormatContext *s,
830  unsigned sendtime, unsigned duration,
831  int nb_payloads, int padsize)
832 {
833  ASFContext *asf = s->priv_data;
834  AVIOContext *pb = s->pb;
835  int ppi_size, i;
836  int64_t start = avio_tell(pb);
837 
838  int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
839 
840  padsize -= PACKET_HEADER_MIN_SIZE;
841  if (asf->multi_payloads_present)
842  padsize--;
843  av_assert0(padsize >= 0);
844 
845  avio_w8(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
846  for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++)
847  avio_w8(pb, 0x0);
848 
849  if (asf->multi_payloads_present)
850  iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
851 
852  if (padsize > 0) {
853  if (padsize < 256)
854  iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
855  else
856  iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
857  }
858  avio_w8(pb, iLengthTypeFlags);
859 
860  avio_w8(pb, ASF_PPI_PROPERTY_FLAGS);
861 
862  if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
863  avio_wl16(pb, padsize - 2);
864  if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
865  avio_w8(pb, padsize - 1);
866 
867  avio_wl32(pb, sendtime);
868  avio_wl16(pb, duration);
869  if (asf->multi_payloads_present)
870  avio_w8(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
871 
872  ppi_size = avio_tell(pb) - start;
873 
874  return ppi_size;
875 }
876 
877 static void flush_packet(AVFormatContext *s)
878 {
879  ASFContext *asf = s->priv_data;
880  int packet_hdr_size, packet_filled_size;
881 
882  av_assert0(asf->packet_timestamp_end >= asf->packet_timestamp_start);
883 
884  if (asf->is_streamed)
885  put_chunk(s, 0x4424, s->packet_size, 0);
886 
887  packet_hdr_size = put_payload_parsing_info(s,
888  asf->packet_timestamp_start,
889  asf->packet_timestamp_end - asf->packet_timestamp_start,
890  asf->packet_nb_payloads,
891  asf->packet_size_left);
892 
893  packet_filled_size = asf->packet_size - asf->packet_size_left;
894  av_assert0(packet_hdr_size <= asf->packet_size_left);
895  memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
896 
897  avio_write(s->pb, asf->packet_buf, s->packet_size - packet_hdr_size);
898 
899  avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_FLUSH_POINT);
900 
901  asf->nb_packets++;
902  asf->packet_nb_payloads = 0;
903  asf->packet_timestamp_start = -1;
904  asf->packet_timestamp_end = -1;
905  ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
906  NULL, NULL, NULL, NULL);
907 }
908 
909 static void put_payload_header(AVFormatContext *s, ASFStream *stream,
910  int64_t presentation_time, int m_obj_size,
911  int m_obj_offset, int payload_len, int flags)
912 {
913  ASFContext *asf = s->priv_data;
914  AVIOContext *pb = &asf->pb;
915  int val;
916 
917  val = stream->num;
918  if (flags & AV_PKT_FLAG_KEY)
919  val |= ASF_PL_FLAG_KEY_FRAME;
920  avio_w8(pb, val);
921 
922  avio_w8(pb, stream->seq); // Media object number
923  avio_wl32(pb, m_obj_offset); // Offset Into Media Object
924 
925  // Replicated Data shall be at least 8 bytes long.
926  // The first 4 bytes of data shall contain the
927  // Size of the Media Object that the payload belongs to.
928  // The next 4 bytes of data shall contain the
929  // Presentation Time for the media object that the payload belongs to.
930  avio_w8(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
931 
932  avio_wl32(pb, m_obj_size); // Replicated Data - Media Object Size
933  avio_wl32(pb, (uint32_t) presentation_time); // Replicated Data - Presentation Time
934 
935  if (asf->multi_payloads_present) {
936  avio_wl16(pb, payload_len); // payload length
937  }
938 }
939 
940 static void put_frame(AVFormatContext *s, ASFStream *stream, AVStream *avst,
941  int64_t timestamp, const uint8_t *buf,
942  int m_obj_size, int flags)
943 {
944  ASFContext *asf = s->priv_data;
945  int m_obj_offset, payload_len, frag_len1;
946 
947  m_obj_offset = 0;
948  while (m_obj_offset < m_obj_size) {
949  payload_len = m_obj_size - m_obj_offset;
950  if (asf->packet_timestamp_start == -1) {
951  const int multi_payload_constant = (asf->packet_size - MULTI_PAYLOAD_HEADERS);
952  asf->multi_payloads_present = (payload_len < multi_payload_constant);
953 
954  asf->packet_size_left = asf->packet_size;
955  if (asf->multi_payloads_present) {
956  frag_len1 = multi_payload_constant - 1;
957  } else {
958  frag_len1 = asf->packet_size - SINGLE_PAYLOAD_HEADERS;
959  }
960  asf->packet_timestamp_start = timestamp;
961  } else {
962  // multi payloads
963  frag_len1 = asf->packet_size_left -
964  PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS -
965  PACKET_HEADER_MIN_SIZE - 1;
966 
967  if (frag_len1 < payload_len &&
968  avst->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
969  flush_packet(s);
970  continue;
971  }
972  if (asf->packet_timestamp_start > INT64_MAX - UINT16_MAX ||
973  timestamp > asf->packet_timestamp_start + UINT16_MAX) {
974  flush_packet(s);
975  continue;
976  }
977  }
978  if (frag_len1 > 0) {
979  if (payload_len > frag_len1)
980  payload_len = frag_len1;
981  else if (payload_len == (frag_len1 - 1))
982  payload_len = frag_len1 - 2; // additional byte need to put padding length
983 
984  put_payload_header(s, stream, timestamp + PREROLL_TIME,
985  m_obj_size, m_obj_offset, payload_len, flags);
986  avio_write(&asf->pb, buf, payload_len);
987 
988  if (asf->multi_payloads_present)
989  asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
990  else
991  asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
992  asf->packet_timestamp_end = timestamp;
993 
994  asf->packet_nb_payloads++;
995  } else {
996  payload_len = 0;
997  }
998  m_obj_offset += payload_len;
999  buf += payload_len;
1000 
1001  if (!asf->multi_payloads_present)
1002  flush_packet(s);
1003  else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1))
1004  flush_packet(s);
1005  else if (asf->packet_nb_payloads == ASF_PAYLOADS_PER_PACKET)
1006  flush_packet(s);
1007  }
1008  stream->seq++;
1009 }
1010 
1011 static int update_index(AVFormatContext *s, int start_sec,
1012  uint32_t packet_number, uint16_t packet_count,
1013  uint64_t packet_offset)
1014 {
1015  ASFContext *asf = s->priv_data;
1016 
1017  if (start_sec > asf->next_start_sec) {
1018  int i;
1019 
1020  if (!asf->next_start_sec) {
1021  asf->next_packet_number = packet_number;
1022  asf->next_packet_count = packet_count;
1023  asf->next_packet_offset = packet_offset;
1024  }
1025 
1026  if (start_sec > asf->nb_index_memory_alloc) {
1027  int err;
1028  asf->nb_index_memory_alloc = (start_sec + ASF_INDEX_BLOCK) & ~(ASF_INDEX_BLOCK - 1);
1029  if ((err = av_reallocp_array(&asf->index_ptr,
1030  asf->nb_index_memory_alloc,
1031  sizeof(*asf->index_ptr))) < 0) {
1032  asf->nb_index_memory_alloc = 0;
1033  return err;
1034  }
1035  }
1036  for (i = asf->next_start_sec; i < start_sec; i++) {
1037  asf->index_ptr[i].packet_number = asf->next_packet_number;
1038  asf->index_ptr[i].packet_count = asf->next_packet_count;
1039  asf->index_ptr[i].send_time = asf->next_start_sec * INT64_C(10000000);
1040  asf->index_ptr[i].offset = asf->next_packet_offset;
1041 
1042  }
1043  }
1044  asf->maximum_packet = FFMAX(asf->maximum_packet, packet_count);
1045  asf->next_packet_number = packet_number;
1046  asf->next_packet_count = packet_count;
1047  asf->next_packet_offset = packet_offset;
1048  asf->next_start_sec = start_sec;
1049 
1050  return 0;
1051 }
1052 
1053 static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
1054 {
1055  ASFContext *asf = s->priv_data;
1056  AVIOContext *pb = s->pb;
1057  ASFStream *stream;
1058  AVCodecParameters *par;
1059  uint32_t packet_number;
1060  int64_t pts;
1061  int start_sec;
1062  int flags = pkt->flags;
1063  int ret;
1064  uint64_t offset = avio_tell(pb);
1065 
1066  par = s->streams[pkt->stream_index]->codecpar;
1067  stream = &asf->streams[pkt->stream_index];
1068 
1069  if (par->codec_type == AVMEDIA_TYPE_AUDIO)
1070  flags &= ~AV_PKT_FLAG_KEY;
1071 
1072  pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
1073  av_assert0(pts != AV_NOPTS_VALUE);
1074  if ( pts < - PREROLL_TIME
1075  || pts > (INT_MAX-3)/10000LL * ASF_INDEXED_INTERVAL - PREROLL_TIME) {
1076  av_log(s, AV_LOG_ERROR, "input pts %"PRId64" is invalid\n", pts);
1077  return AVERROR(EINVAL);
1078  }
1079  pts *= 10000;
1080  asf->duration = FFMAX(asf->duration, pts + pkt->duration * 10000);
1081 
1082  packet_number = asf->nb_packets;
1083  put_frame(s, stream, s->streams[pkt->stream_index],
1084  pkt->dts, pkt->data, pkt->size, flags);
1085 
1086  start_sec = (int)((PREROLL_TIME * 10000 + pts + ASF_INDEXED_INTERVAL - 1)
1087  / ASF_INDEXED_INTERVAL);
1088 
1089  /* check index */
1090  if ((!asf->is_streamed) && (flags & AV_PKT_FLAG_KEY)) {
1091  uint16_t packet_count = asf->nb_packets - packet_number;
1092  ret = update_index(s, start_sec, packet_number, packet_count, offset);
1093  if (ret < 0)
1094  return ret;
1095  }
1096  asf->end_sec = start_sec;
1097 
1098  return 0;
1099 }
1100 
1101 static int asf_write_index(AVFormatContext *s, const ASFIndex *index,
1102  uint16_t max, uint32_t count)
1103 {
1104  AVIOContext *pb = s->pb;
1105  int i;
1106 
1107  ff_put_guid(pb, &ff_asf_simple_index_header);
1108  avio_wl64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2) * count);
1109  ff_put_guid(pb, &ff_asf_my_guid);
1110  avio_wl64(pb, ASF_INDEXED_INTERVAL);
1111  avio_wl32(pb, max);
1112  avio_wl32(pb, count);
1113  for (i = 0; i < count; i++) {
1114  avio_wl32(pb, index[i].packet_number);
1115  avio_wl16(pb, index[i].packet_count);
1116  }
1117 
1118  return 0;
1119 }
1120 
1121 static int asf_write_trailer(AVFormatContext *s)
1122 {
1123  ASFContext *asf = s->priv_data;
1124  int64_t file_size, data_size;
1125  int ret;
1126 
1127  /* flush the current packet */
1128  if (asf->pb.buf_ptr > asf->pb.buffer)
1129  flush_packet(s);
1130 
1131  /* write index */
1132  data_size = avio_tell(s->pb);
1133  if (!asf->is_streamed && asf->next_start_sec) {
1134  if ((ret = update_index(s, asf->end_sec + 1, 0, 0, 0)) < 0)
1135  return ret;
1136  asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->next_start_sec);
1137  }
1138 
1139  if (asf->is_streamed || !(s->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
1140  put_chunk(s, 0x4524, 0, 0); /* end of stream */
1141  } else {
1142  /* rewrite an updated header */
1143  file_size = avio_tell(s->pb);
1144  avio_seek(s->pb, 0, SEEK_SET);
1145  asf_write_header1(s, file_size, data_size - asf->data_offset);
1146  }
1147 
1148  av_freep(&asf->index_ptr);
1149  return 0;
1150 }
1151 
1152 static const AVOption asf_options[] = {
1153  { "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 },
1154  { NULL },
1155 };
1156 
1157 #if CONFIG_ASF_MUXER
1158 static const AVClass asf_muxer_class = {
1159  .class_name = "ASF muxer",
1160  .item_name = av_default_item_name,
1161  .option = asf_options,
1162  .version = LIBAVUTIL_VERSION_INT,
1163 };
1164 
1165 AVOutputFormat ff_asf_muxer = {
1166  .name = "asf",
1167  .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
1168  .mime_type = "video/x-ms-asf",
1169  .extensions = "asf,wmv,wma",
1170  .priv_data_size = sizeof(ASFContext),
1171  .audio_codec = AV_CODEC_ID_WMAV2,
1172  .video_codec = AV_CODEC_ID_MSMPEG4V3,
1173  .write_header = asf_write_header,
1174  .write_packet = asf_write_packet,
1175  .write_trailer = asf_write_trailer,
1176  .flags = AVFMT_GLOBALHEADER,
1177  .codec_tag = asf_codec_tags,
1178  .priv_class = &asf_muxer_class,
1179 };
1180 #endif /* CONFIG_ASF_MUXER */
1181 
1182 #if CONFIG_ASF_STREAM_MUXER
1183 static const AVClass asf_stream_muxer_class = {
1184  .class_name = "ASF stream muxer",
1185  .item_name = av_default_item_name,
1186  .option = asf_options,
1187  .version = LIBAVUTIL_VERSION_INT,
1188 };
1189 
1190 AVOutputFormat ff_asf_stream_muxer = {
1191  .name = "asf_stream",
1192  .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
1193  .mime_type = "video/x-ms-asf",
1194  .extensions = "asf,wmv,wma",
1195  .priv_data_size = sizeof(ASFContext),
1196  .audio_codec = AV_CODEC_ID_WMAV2,
1197  .video_codec = AV_CODEC_ID_MSMPEG4V3,
1198  .write_header = asf_write_stream_header,
1199  .write_packet = asf_write_packet,
1200  .write_trailer = asf_write_trailer,
1201  .flags = AVFMT_GLOBALHEADER,
1202  .codec_tag = asf_codec_tags,
1203  .priv_class = &asf_stream_muxer_class,
1204 };
1205 #endif /* CONFIG_ASF_STREAM_MUXER */
ASFContext::packet_size
int packet_size
Definition: asfenc.c:251
AV_LANG_ISO639_1
@ AV_LANG_ISO639_1
3-char terminological language codes as per ISO-IEC 639-2
Definition: avlanguage.h:30
ASF_INDEXED_INTERVAL
#define ASF_INDEXED_INTERVAL
Definition: asfenc.c:33
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
AVCodecParameters::codec_type
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD
#define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD
Definition: asfenc.c:160
ASFIndex
Definition: asf.h:65
asf_write_markers
static int asf_write_markers(AVFormatContext *s)
Definition: asfenc.c:345
AVCodecParameters
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
ASFContext::next_start_sec
int next_start_sec
Definition: asfenc.c:249
MKTAG
#define MKTAG(a, b, c, d)
Definition: common.h:478
av_dict_count
int av_dict_count(const AVDictionary *m)
Get number of entries in dictionary.
Definition: dict.c:35
codec_asf_bmp_tags
static const AVCodecTag codec_asf_bmp_tags[]
Definition: asfenc.c:254
ff_put_bmp_header
void ff_put_bmp_header(AVIOContext *pb, AVCodecParameters *par, int for_asf, int ignore_extradata, int rgb_frame_is_flipped)
Definition: riffenc.c:215
AVCodecDescriptor::name
const char * name
Name of the codec described by this descriptor.
Definition: codec_desc.h:46
avlanguage.h
ff_asf_extended_stream_properties_object
const ff_asf_guid ff_asf_extended_stream_properties_object
Definition: asf.c:140
ASFStream::palette_changed
int palette_changed
Definition: asfdec_f.c:67
AV_CODEC_ID_MPEG4
@ AV_CODEC_ID_MPEG4
Definition: codec_id.h:61
ASFContext::duration
int64_t duration
in 100ns units
Definition: asfenc.c:231
AVPacket::data
uint8_t * data
Definition: packet.h:369
AVOption
AVOption.
Definition: opt.h:248
ASFStream::skip_to_key
int skip_to_key
Definition: asfdec_f.c:56
ff_parse_creation_time_metadata
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:5704
AV_DICT_IGNORE_SUFFIX
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key,...
Definition: dict.h:70
ff_asf_video_stream
const ff_asf_guid ff_asf_video_stream
Definition: asf.c:47
ff_asf_simple_index_header
const ff_asf_guid ff_asf_simple_index_header
Definition: asf.c:90
avio_wl64
void avio_wl64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:443
ff_codec_wav_tags
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:508
put_chunk
static void put_chunk(AVFormatContext *s, int type, int payload_length, int flags)
Definition: asfenc.c:304
AV_CODEC_ID_WMAV2
@ AV_CODEC_ID_WMAV2
Definition: codec_id.h:432
AVPacket::duration
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:387
AVCodecParameters::codec_tag
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
max
#define max(a, b)
Definition: cuda_runtime.h:33
mathematics.h
ASFContext::packet_buf
uint8_t packet_buf[PACKET_SIZE_MAX]
Definition: asfenc.c:238
ff_asf_stream_header
const ff_asf_guid ff_asf_stream_header
Definition: asf.c:31
ASFContext::seqno
uint32_t seqno
Definition: asfenc.c:223
ff_asf_codec_comment_header
const ff_asf_guid ff_asf_codec_comment_header
Definition: asf.c:67
ASFContext::data_offset
uint64_t data_offset
beginning of the first data packet
Definition: asfdec_f.c:85
ASFContext::av_class
AVClass * av_class
Definition: asfenc.c:222
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:410
ASFContext::nb_index_memory_alloc
uint32_t nb_index_memory_alloc
Definition: asfenc.c:244
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:31
avio_wl16
void avio_wl16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:455
avio_write_marker
void avio_write_marker(AVIOContext *s, int64_t time, enum AVIODataMarkerType type)
Mark the written bytestream as a specific type.
Definition: aviobuf.c:479
asf_write_packet
static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: asfenc.c:1053
ff_asf_mutex_language
const ff_asf_guid ff_asf_mutex_language
Definition: asf.c:148
ASFContext::languages
const char * languages[128]
Definition: asfenc.c:226
ASFContext::streams
ASFStream streams[128]
it's max number and it's not that big
Definition: asfdec_f.c:77
avio_tell
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
ASF_PACKET_ERROR_CORRECTION_FLAGS
#define ASF_PACKET_ERROR_CORRECTION_FLAGS
Definition: asfenc.c:38
AVChapter
Definition: avformat.h:1185
val
static double val(void *priv, double ch)
Definition: aeval.c:76
type
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 type
Definition: writing_filters.txt:86
ff_asf_group_mutual_exclusion_object
const ff_asf_guid ff_asf_group_mutual_exclusion_object
Definition: asf.c:144
ASF_PAYLOAD_REPLICATED_DATA_LENGTH
#define ASF_PAYLOAD_REPLICATED_DATA_LENGTH
Definition: asfenc.c:158
pts
static int64_t pts
Definition: transcode_aac.c:652
AVRational::num
int num
Numerator.
Definition: rational.h:59
put_str16
static void put_str16(AVIOContext *s, const char *tag)
Definition: asfenc.c:267
avio_close_dyn_buf
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1424
ASFContext::end_sec
int end_sec
Definition: asfenc.c:250
ASFContext::next_packet_number
uint32_t next_packet_number
Definition: asfenc.c:246
avassert.h
ASFStream::pkt_clean
int pkt_clean
Definition: asfdec_f.c:57
pkt
AVPacket * pkt
Definition: movenc.c:59
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
ASFContext::packet_timestamp_start
int64_t packet_timestamp_start
Definition: asfenc.c:235
AVCodecTag
Definition: internal.h:42
duration
int64_t duration
Definition: movenc.c:64
MULTI_PAYLOAD_HEADERS
#define MULTI_PAYLOAD_HEADERS
Definition: asfenc.c:179
PACKET_SIZE_MIN
#define PACKET_SIZE_MIN
Definition: asfenc.c:187
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
avio_open_dyn_buf
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1379
ASFStream::duration
int64_t duration
Definition: asfdec_f.c:55
AV_CODEC_ID_ADPCM_G726
@ AV_CODEC_ID_ADPCM_G726
Definition: codec_id.h:364
AVCodecDescriptor
This struct describes the properties of a single codec described by an AVCodecID.
Definition: codec_desc.h:38
s
#define s(width, name)
Definition: cbs_vp9.c:257
AV_OPT_FLAG_ENCODING_PARAM
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
Definition: opt.h:278
ASFContext::maximum_packet
uint16_t maximum_packet
Definition: asfenc.c:245
ASFContext::packet_timestamp_end
int64_t packet_timestamp_end
Definition: asfenc.c:236
ff_asf_data_header
const ff_asf_guid ff_asf_data_header
Definition: asf.c:74
AVCodecParameters::sample_aspect_ratio
AVRational sample_aspect_ratio
Video only.
Definition: codec_par.h:136
g
const char * g
Definition: vf_curves.c:117
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
AVCodecParameters::width
int width
Video only.
Definition: codec_par.h:126
ASF_PACKET_ERROR_CORRECTION_DATA_SIZE
#define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE
Definition: asfenc.c:37
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
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
ASF_PAYLOAD_FLAGS
#define ASF_PAYLOAD_FLAGS
Definition: asfenc.c:56
asf_write_header
static int asf_write_header(AVFormatContext *s)
Definition: asfenc.c:780
ff_asf_stream_muxer
AVOutputFormat ff_asf_stream_muxer
ASFStream::timestamp
int timestamp
Definition: asfdec_f.c:54
ASF_PAYLOADS_PER_PACKET
#define ASF_PAYLOADS_PER_PACKET
Definition: asfenc.c:35
int32_t
int32_t
Definition: audio_convert.c:194
ASFIndex::send_time
uint64_t send_time
Definition: asf.h:68
AVFormatContext
Format I/O context.
Definition: avformat.h:1232
internal.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1038
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
ASFStream::ds_packet_size
int ds_packet_size
Definition: asfdec_f.c:60
NULL
#define NULL
Definition: coverity.c:32
ff_asf_guid
uint8_t ff_asf_guid[16]
Definition: riff.h:96
ff_asf_audio_conceal_spread
const ff_asf_guid ff_asf_audio_conceal_spread
Definition: asf.c:43
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
ASFPayload::size
uint16_t size
Definition: asfdec_f.c:44
ff_asf_header
const ff_asf_guid ff_asf_header
Definition: asf.c:23
write_trailer
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98
ASFStream::seq
unsigned char seq
Definition: asfdec_f.c:49
ff_asf_metadata_conv
const AVMetadataConv ff_asf_metadata_conv[]
Definition: asf.c:153
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
put_payload_parsing_info
static int put_payload_parsing_info(AVFormatContext *s, unsigned sendtime, unsigned duration, int nb_payloads, int padsize)
Definition: asfenc.c:829
ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE
#define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE
Definition: asf.h:133
avio_w8
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:203
ASFContext::nb_packets
uint64_t nb_packets
how many packets are there in the file, invalid if broadcasting
Definition: asfdec_o.c:100
ASFContext::packet_size_left
int packet_size_left
Definition: asfdec_f.c:83
ff_asf_muxer
AVOutputFormat ff_asf_muxer
ff_asf_head1_guid
const ff_asf_guid ff_asf_head1_guid
Definition: asf.c:78
asf_codec_tags
static const AVCodecTag *const asf_codec_tags[]
Definition: asfenc.c:261
index
int index
Definition: gxfenc.c:89
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
put_payload_header
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:909
AVCodecParameters::extradata_size
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:78
ASFStream::packet_pos
int64_t packet_pos
Definition: asfdec_f.c:63
ASFStream::ds_chunk_size
int ds_chunk_size
Definition: asfdec_f.c:61
ASFIndex::packet_number
uint32_t packet_number
Definition: asf.h:66
AVIOContext
Bytestream IO Context.
Definition: avio.h:161
ffio_init_context
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:88
AVPacket::size
int size
Definition: packet.h:370
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:117
AVIOContext::seekable
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:260
ff_convert_lang_to
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
FFMAX
#define FFMAX(a, b)
Definition: common.h:103
ASFContext::packet_size
uint32_t packet_size
Definition: asfdec_o.c:101
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:4945
ASF_INDEX_BLOCK
#define ASF_INDEX_BLOCK
Definition: asfenc.c:34
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
ASFPayload::type
uint8_t type
Definition: asfdec_f.c:43
FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX
#define FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX
Tell ff_put_wav_header() to use WAVEFORMATEX even for PCM codecs.
Definition: riff.h:54
ASFStream::ds_span
int ds_span
Definition: asfdec_f.c:59
ASFContext::is_streamed
int is_streamed
Definition: asfenc.c:224
AVPacket::dts
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:368
avio_write
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:225
asf_write_header1
static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size)
Definition: asfenc.c:389
av_reallocp_array
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
avio_wl32
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:375
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 offset
Definition: writing_filters.txt:86
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:375
ASFStream::pkt
AVPacket pkt
Definition: asfdec_f.c:51
write_packet
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:729
ASF_PPI_LENGTH_TYPE_FLAGS
#define ASF_PPI_LENGTH_TYPE_FLAGS
Definition: asfenc.c:54
ASFIndex::offset
uint64_t offset
Definition: asf.h:69
i
int i
Definition: input.c:407
ASF_PL_FLAG_KEY_FRAME
#define ASF_PL_FLAG_KEY_FRAME
Definition: asf.h:166
AVFMT_GLOBALHEADER
#define AVFMT_GLOBALHEADER
Format wants global header.
Definition: avformat.h:461
AV_CODEC_ID_NONE
@ AV_CODEC_ID_NONE
Definition: codec_id.h:47
AVOutputFormat
Definition: avformat.h:490
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:362
avio_internal.h
ff_asf_reserved_4
const ff_asf_guid ff_asf_reserved_4
Definition: asf.c:114
AVCodecParameters::height
int height
Definition: codec_par.h:127
ASFContext::creation_time
int64_t creation_time
Definition: asfenc.c:228
AVCodecParameters::block_align
int block_align
Audio only.
Definition: codec_par.h:177
ASFStream::stream_language_index
uint16_t stream_language_index
Definition: asfdec_f.c:65
ASFContext::pb
AVIOContext pb
Definition: asfenc.c:239
ASFStream::frag_offset
int frag_offset
Definition: asfdec_f.c:52
ff_metadata_conv
void ff_metadata_conv(AVDictionary **pm, const AVMetadataConv *d_conv, const AVMetadataConv *s_conv)
Definition: metadata.c:26
value
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 value
Definition: writing_filters.txt:86
unix_to_file_time
static int64_t unix_to_file_time(int64_t ti)
Definition: asfenc.c:321
uint8_t
uint8_t
Definition: audio_convert.c:194
PREROLL_TIME
#define PREROLL_TIME
Definition: asfenc.c:265
ASFStream::payload
ASFPayload payload[8]
Definition: asfdec_f.c:71
len
int len
Definition: vorbis_enc_data.h:452
ff_asf_extended_content_header
const ff_asf_guid ff_asf_extended_content_header
Definition: asf.c:86
DATA_HEADER_SIZE
#define DATA_HEADER_SIZE
Definition: asfenc.c:184
put_header
static int64_t put_header(AVIOContext *pb, const ff_asf_guid *g)
Definition: asfenc.c:282
ASFContext::packet_nb_payloads
unsigned int packet_nb_payloads
Definition: asfenc.c:237
tag
uint32_t tag
Definition: movenc.c:1611
ret
ret
Definition: filter_design.txt:187
AVStream
Stream structure.
Definition: avformat.h:873
avio_seek
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:253
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
ff_asf_audio_stream
const ff_asf_guid ff_asf_audio_stream
Definition: asf.c:39
PACKET_SIZE_MAX
#define PACKET_SIZE_MAX
Definition: asfenc.c:186
ASFStream::packet_obj_size
int packet_obj_size
Definition: asfdec_f.c:53
ASFContext::nb_languages
int nb_languages
Definition: asfenc.c:227
ASFContext::multi_payloads_present
unsigned char multi_payloads_present
Definition: asfenc.c:233
pos
unsigned int pos
Definition: spdifenc.c:412
avformat.h
dict.h
asf_options
static const AVOption asf_options[]
Definition: asfenc.c:1152
asf.h
get_send_time
static int32_t get_send_time(ASFContext *asf, int64_t pres_time, uint64_t *offset)
Definition: asfenc.c:330
ASFContext::next_packet_offset
uint64_t next_packet_offset
Definition: asfenc.c:248
asf_write_trailer
static int asf_write_trailer(AVFormatContext *s)
Definition: asfenc.c:1121
ff_codec_bmp_tags
const AVCodecTag ff_codec_bmp_tags[]
Definition: riff.c:33
ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT
#define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT
Definition: asf.h:126
ff_asf_comment_header
const ff_asf_guid ff_asf_comment_header
Definition: asf.c:63
AVIO_SEEKABLE_NORMAL
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
flush_packet
static void flush_packet(AVFormatContext *s)
Definition: asfenc.c:877
ff_put_guid
void ff_put_guid(AVIOContext *s, const ff_asf_guid *g)
Definition: riffenc.c:356
AVRational::den
int den
Denominator.
Definition: rational.h:60
PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS
#define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS
Definition: asfenc.c:167
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
end_header
static void end_header(AVIOContext *pb, int64_t pos)
Definition: asfenc.c:293
ASFContext::duration
int duration
Definition: asfdec_o.c:103
ASFStream::num
int num
Definition: asfdec_f.c:48
update_index
static int update_index(AVFormatContext *s, int start_sec, uint32_t packet_number, uint16_t packet_count, uint64_t packet_offset)
Definition: asfenc.c:1011
ff_asf_language_guid
const ff_asf_guid ff_asf_language_guid
Definition: asf.c:124
AVPacket::stream_index
int stream_index
Definition: packet.h:371
SINGLE_PAYLOAD_HEADERS
#define SINGLE_PAYLOAD_HEADERS
Definition: asfenc.c:175
ff_asf_file_header
const ff_asf_guid ff_asf_file_header
Definition: asf.c:27
ff_asf_metadata_header
const ff_asf_guid ff_asf_metadata_header
Definition: asf.c:102
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
ASFContext
Definition: asfdec_f.c:74
ff_asf_head2_guid
const ff_asf_guid ff_asf_head2_guid
Definition: asf.c:82
AVIOContext::buffer
unsigned char * buffer
Start of the buffer.
Definition: avio.h:226
ASFStream::palette
uint32_t palette[256]
Definition: asfdec_f.c:68
put_frame
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:940
AVDictionaryEntry
Definition: dict.h:81
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:346
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
av_dict_set
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
riff.h
PACKET_HEADER_MIN_SIZE
#define PACKET_HEADER_MIN_SIZE
Definition: asfenc.c:146
ff_asf_my_guid
const ff_asf_guid ff_asf_my_guid
Definition: asf.c:120
ASFIndex::packet_count
uint16_t packet_count
Definition: asf.h:67
avio_put_str16le
int avio_put_str16le(AVIOContext *s, const char *str)
Convert an UTF-8 string to UTF-16LE and write it.
ASFStream
Definition: asfdec_f.c:47
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
ff_asf_marker_header
const ff_asf_guid ff_asf_marker_header
Definition: asf.c:110
AVCodecParameters::bit_rate
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: codec_par.h:89
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
AV_CODEC_ID_MSMPEG4V3
@ AV_CODEC_ID_MSMPEG4V3
Definition: codec_id.h:65
asf_write_stream_header
static int asf_write_stream_header(AVFormatContext *s)
Definition: asfenc.c:820
avcodec_descriptor_get
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
Definition: codec_desc.c:3501
AVDictionaryEntry::value
char * value
Definition: dict.h:83
write_header
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:346
ff_asf_video_conceal_none
const ff_asf_guid ff_asf_video_conceal_none
Definition: asf.c:55
ASFContext::next_packet_count
uint16_t next_packet_count
Definition: asfenc.c:247
ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD
#define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD
Definition: asf.h:134
AVIOContext::buf_ptr
unsigned char * buf_ptr
Current position in the buffer.
Definition: avio.h:228
int
int
Definition: ffmpeg_filter.c:170
ASFContext::index_ptr
ASFIndex * index_ptr
Definition: asfenc.c:243
ASFPayload
Definition: asfdec_f.c:42
ff_asf_codec_comment1_header
const ff_asf_guid ff_asf_codec_comment1_header
Definition: asf.c:70
ASFStream::payload_ext_ct
int payload_ext_ct
Definition: asfdec_f.c:70
ASF_PPI_PROPERTY_FLAGS
#define ASF_PPI_PROPERTY_FLAGS
Definition: asfenc.c:48
AVIO_DATA_MARKER_FLUSH_POINT
@ AVIO_DATA_MARKER_FLUSH_POINT
A point in the output bytestream where the underlying AVIOContext might flush the buffer depending on...
Definition: avio.h:146
asf_write_index
static int asf_write_index(AVFormatContext *s, const ASFIndex *index, uint16_t max, uint32_t count)
Definition: asfenc.c:1101
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