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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/parseutils.h"
26 #include "libavutil/opt.h"
27 #include "avformat.h"
28 #include "avlanguage.h"
29 #include "avio_internal.h"
30 #include "internal.h"
31 #include "riff.h"
32 #include "asf.h"
33 
34 #define ASF_INDEXED_INTERVAL 10000000
35 #define ASF_INDEX_BLOCK (1<<9)
36 #define ASF_PAYLOADS_PER_PACKET 63
37 
38 #define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
39 #define ASF_PACKET_ERROR_CORRECTION_FLAGS \
40  (ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
41  ASF_PACKET_ERROR_CORRECTION_DATA_SIZE)
42 
43 #if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0)
44 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1
45 #else
46 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0
47 #endif
48 
49 #define ASF_PPI_PROPERTY_FLAGS \
50  (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \
51  ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \
52  ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \
53  ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE)
54 
55 #define ASF_PPI_LENGTH_TYPE_FLAGS 0
56 
57 #define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD
58 
59 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
60 # define ASF_PPI_SEQUENCE_FIELD_SIZE 1
61 #endif
62 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
63 # define ASF_PPI_SEQUENCE_FIELD_SIZE 2
64 #endif
65 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
66 # define ASF_PPI_SEQUENCE_FIELD_SIZE 4
67 #endif
68 #ifndef ASF_PPI_SEQUENCE_FIELD_SIZE
69 # define ASF_PPI_SEQUENCE_FIELD_SIZE 0
70 #endif
71 
72 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
73 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 1
74 #endif
75 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
76 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 2
77 #endif
78 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
79 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 4
80 #endif
81 #ifndef ASF_PPI_PACKET_LENGTH_FIELD_SIZE
82 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 0
83 #endif
84 
85 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
86 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 1
87 #endif
88 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
89 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 2
90 #endif
91 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
92 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 4
93 #endif
94 #ifndef ASF_PPI_PADDING_LENGTH_FIELD_SIZE
95 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 0
96 #endif
97 
98 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
99 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 1
100 #endif
101 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
102 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 2
103 #endif
104 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
105 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 4
106 #endif
107 #ifndef ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE
108 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 0
109 #endif
110 
111 #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))
112 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 1
113 #endif
114 #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))
115 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 2
116 #endif
117 #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))
118 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 4
119 #endif
120 #ifndef ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE
121 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 0
122 #endif
123 
124 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
125 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 1
126 #endif
127 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
128 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 2
129 #endif
130 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
131 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 4
132 #endif
133 #ifndef ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE
134 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 0
135 #endif
136 
137 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
138 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 1
139 #endif
140 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
141 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 2
142 #endif
143 #ifndef ASF_PAYLOAD_LENGTH_FIELD_SIZE
144 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 0
145 #endif
146 
147 #define PACKET_HEADER_MIN_SIZE \
148  (ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE + \
149  ASF_PACKET_ERROR_CORRECTION_DATA_SIZE + \
150  1 + /* Length Type Flags */ \
151  1 + /* Property Flags */ \
152  ASF_PPI_PACKET_LENGTH_FIELD_SIZE + \
153  ASF_PPI_SEQUENCE_FIELD_SIZE + \
154  ASF_PPI_PADDING_LENGTH_FIELD_SIZE + \
155  4 + /* Send Time Field */ \
156  2) /* Duration Field */
157 
158 // Replicated Data shall be at least 8 bytes long.
159 #define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08
160 
161 #define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \
162  (1 + /* Stream Number */ \
163  ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
164  ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
165  ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
166  ASF_PAYLOAD_REPLICATED_DATA_LENGTH)
167 
168 #define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \
169  (1 + /* Stream Number */ \
170  ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
171  ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
172  ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
173  ASF_PAYLOAD_REPLICATED_DATA_LENGTH + \
174  ASF_PAYLOAD_LENGTH_FIELD_SIZE)
175 
176 #define SINGLE_PAYLOAD_HEADERS \
177  (PACKET_HEADER_MIN_SIZE + \
178  PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD)
179 
180 #define MULTI_PAYLOAD_HEADERS \
181  (PACKET_HEADER_MIN_SIZE + \
182  1 + /* Payload Flags */ \
183  2 * PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS)
184 
185 #define DATA_HEADER_SIZE 50
186 
187 #define PACKET_SIZE_MAX 65536
188 #define PACKET_SIZE_MIN 100
189 
190 typedef struct ASFPayload {
191  uint8_t type;
192  uint16_t size;
193 } ASFPayload;
194 
195 typedef struct ASFStream {
196  int num;
197  unsigned char seq;
198  /* use for reading */
199  AVPacket pkt;
200  int frag_offset;
201  int packet_obj_size;
202  int timestamp;
203  int64_t duration;
204  int skip_to_key;
205  int pkt_clean;
206 
207  int ds_span; /* descrambling */
208  int ds_packet_size;
209  int ds_chunk_size;
210 
211  int64_t packet_pos;
212 
213  uint16_t stream_language_index;
214 
215  int palette_changed;
216  uint32_t palette[256];
217 
218  int payload_ext_ct;
219  ASFPayload payload[8];
220 } ASFStream;
221 
222 typedef struct ASFContext {
224  uint32_t seqno;
226  ASFStream streams[128]; ///< it's max number and it's not that big
227  const char *languages[128];
229  int64_t creation_time;
230  /* non streamed additonnal info */
231  uint64_t nb_packets; ///< how many packets are there in the file, invalid if broadcasting
232  int64_t duration; ///< in 100ns units
233  /* packet filling */
234  unsigned char multi_payloads_present;
235  int packet_size_left;
238  unsigned int packet_nb_payloads;
241  /* only for reading */
242  uint64_t data_offset; ///< beginning of the first data packet
243 
246  uint16_t maximum_packet;
251  int end_sec;
253 } ASFContext;
254 
255 static const AVCodecTag codec_asf_bmp_tags[] = {
256  { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
257  { AV_CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
258  { AV_CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
259  { AV_CODEC_ID_NONE, 0 },
260 };
261 
262 #define PREROLL_TIME 3100
263 
264 static void put_str16(AVIOContext *s, const char *tag)
265 {
266  int len;
267  uint8_t *pb;
268  AVIOContext *dyn_buf;
269  if (avio_open_dyn_buf(&dyn_buf) < 0)
270  return;
271 
272  avio_put_str16le(dyn_buf, tag);
273  len = avio_close_dyn_buf(dyn_buf, &pb);
274  avio_wl16(s, len);
275  avio_write(s, pb, len);
276  av_freep(&pb);
277 }
278 
279 static int64_t put_header(AVIOContext *pb, const ff_asf_guid *g)
280 {
281  int64_t pos;
282 
283  pos = avio_tell(pb);
284  ff_put_guid(pb, g);
285  avio_wl64(pb, 24);
286  return pos;
287 }
288 
289 /* update header size */
290 static void end_header(AVIOContext *pb, int64_t pos)
291 {
292  int64_t pos1;
293 
294  pos1 = avio_tell(pb);
295  avio_seek(pb, pos + 16, SEEK_SET);
296  avio_wl64(pb, pos1 - pos);
297  avio_seek(pb, pos1, SEEK_SET);
298 }
299 
300 /* write an asf chunk (only used in streaming case) */
301 static void put_chunk(AVFormatContext *s, int type,
302  int payload_length, int flags)
303 {
304  ASFContext *asf = s->priv_data;
305  AVIOContext *pb = s->pb;
306  int length;
307 
308  length = payload_length + 8;
309  avio_wl16(pb, type);
310  avio_wl16(pb, length); // size
311  avio_wl32(pb, asf->seqno); // sequence number
312  avio_wl16(pb, flags); // unknown bytes
313  avio_wl16(pb, length); // size_confirm
314  asf->seqno++;
315 }
316 
317 /* convert from av time to windows time */
318 static int64_t unix_to_file_time(int64_t ti)
319 {
320  int64_t t;
321 
322  t = ti * INT64_C(10);
323  t += INT64_C(116444736000000000);
324  return t;
325 }
326 
327 static int32_t get_send_time(ASFContext *asf, int64_t pres_time, uint64_t *offset)
328 {
329  int i;
330  int32_t send_time = 0;
331  *offset = asf->data_offset + DATA_HEADER_SIZE;
332  for (i = 0; i < asf->next_start_sec; i++) {
333  if (pres_time <= asf->index_ptr[i].send_time)
334  break;
335  send_time = asf->index_ptr[i].send_time;
336  *offset = asf->index_ptr[i].offset;
337  }
338 
339  return send_time / 10000;
340 }
341 
343 {
344  ASFContext *asf = s->priv_data;
345  AVIOContext *pb = s->pb;
346  int i;
347  AVRational scale = {1, 10000000};
348  int64_t hpos = put_header(pb, &ff_asf_marker_header);
349 
350  ff_put_guid(pb, &ff_asf_reserved_4);// ASF spec mandates this reserved value
351  avio_wl32(pb, s->nb_chapters); // markers count
352  avio_wl16(pb, 0); // ASF spec mandates 0 for this
353  avio_wl16(pb, 0); // name length 0, no name given
354 
355  for (i = 0; i < s->nb_chapters; i++) {
356  AVChapter *c = s->chapters[i];
357  AVDictionaryEntry *t = av_dict_get(c->metadata, "title", NULL, 0);
358  int64_t pres_time = av_rescale_q(c->start, c->time_base, scale);
359  uint64_t offset;
360  int32_t send_time = get_send_time(asf, pres_time, &offset);
361  int len = 0;
362  uint8_t *buf;
363  AVIOContext *dyn_buf;
364  if (t) {
365  if (avio_open_dyn_buf(&dyn_buf) < 0)
366  return AVERROR(ENOMEM);
367  avio_put_str16le(dyn_buf, t->value);
368  len = avio_close_dyn_buf(dyn_buf, &buf);
369  }
370  avio_wl64(pb, offset); // offset of the packet with send_time
371  avio_wl64(pb, pres_time + PREROLL_TIME * 10000); // presentation time
372  avio_wl16(pb, 12 + len); // entry length
373  avio_wl32(pb, send_time); // send time
374  avio_wl32(pb, 0); // flags, should be 0
375  avio_wl32(pb, len / 2); // marker desc length in WCHARS!
376  if (t) {
377  avio_write(pb, buf, len); // marker desc
378  av_freep(&buf);
379  }
380  }
381  end_header(pb, hpos);
382  return 0;
383 }
384 
385 /* write the header (used two times if non streamed) */
386 static int asf_write_header1(AVFormatContext *s, int64_t file_size,
387  int64_t data_chunk_size)
388 {
389  ASFContext *asf = s->priv_data;
390  AVIOContext *pb = s->pb;
391  AVDictionaryEntry *tags[5];
392  int header_size, n, extra_size, extra_size2, wav_extra_size;
393  int has_title, has_aspect_ratio = 0;
394  int metadata_count;
395  AVCodecContext *enc;
396  int64_t header_offset, cur_pos, hpos;
397  int bit_rate;
398  int64_t duration;
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  enc = s->streams[n]->codec;
422 
423  avpriv_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
424 
425  bit_rate += enc->bit_rate;
426  if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
427  && enc->sample_aspect_ratio.num > 0
428  && enc->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 = av_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  }
448  } else {
449  asf->streams[n].stream_language_index = 128;
450  }
451  }
452 
453  if (asf->is_streamed) {
454  put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
455  }
456 
458  avio_wl64(pb, -1); /* header length, will be patched after */
459  avio_wl32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */
460  avio_w8(pb, 1); /* ??? */
461  avio_w8(pb, 2); /* ??? */
462 
463  /* file header */
464  header_offset = avio_tell(pb);
465  hpos = put_header(pb, &ff_asf_file_header);
467  avio_wl64(pb, file_size);
469  avio_wl64(pb, asf->nb_packets); /* number of packets */
470  avio_wl64(pb, duration); /* end time stamp (in 100ns units) */
471  avio_wl64(pb, asf->duration); /* duration (in 100ns units) */
472  avio_wl64(pb, PREROLL_TIME); /* start time stamp */
473  avio_wl32(pb, (asf->is_streamed || !pb->seekable) ? 3 : 2); /* ??? */
474  avio_wl32(pb, s->packet_size); /* packet size */
475  avio_wl32(pb, s->packet_size); /* packet size */
476  avio_wl32(pb, bit_rate ? bit_rate : -1); /* Maximum data rate in bps */
477  end_header(pb, hpos);
478 
479  /* header_extension */
480  hpos = put_header(pb, &ff_asf_head1_guid);
482  avio_wl16(pb, 6);
483  avio_wl32(pb, 0); /* length, to be filled later */
484  if (asf->nb_languages) {
485  int64_t hpos2;
486  int i;
487 
488  hpos2 = put_header(pb, &ff_asf_language_guid);
489  avio_wl16(pb, asf->nb_languages);
490  for (i = 0; i < asf->nb_languages; i++) {
491  avio_w8(pb, 6);
492  avio_put_str16le(pb, asf->languages[i]);
493  }
494  end_header(pb, hpos2);
495 
496  for (n = 0; n < s->nb_streams; n++) {
497  int64_t es_pos;
498  if (asf->streams[n].stream_language_index > 127)
499  continue;
501  avio_wl64(pb, 0); /* start time */
502  avio_wl64(pb, 0); /* end time */
503  avio_wl32(pb, s->streams[n]->codec->bit_rate); /* data bitrate bps */
504  avio_wl32(pb, 5000); /* buffer size ms */
505  avio_wl32(pb, 0); /* initial buffer fullness */
506  avio_wl32(pb, s->streams[n]->codec->bit_rate); /* peak data bitrate */
507  avio_wl32(pb, 5000); /* maximum buffer size ms */
508  avio_wl32(pb, 0); /* max initial buffer fullness */
509  avio_wl32(pb, 0); /* max object size */
510  avio_wl32(pb, (!asf->is_streamed && pb->seekable) << 1); /* flags - seekable */
511  avio_wl16(pb, n + 1); /* stream number */
512  avio_wl16(pb, asf->streams[n].stream_language_index); /* language id index */
513  avio_wl64(pb, 0); /* avg time per frame */
514  avio_wl16(pb, 0); /* stream name count */
515  avio_wl16(pb, 0); /* payload extension system count */
516  end_header(pb, es_pos);
517  }
518  }
519  if (has_aspect_ratio) {
520  int64_t hpos2;
521  hpos2 = put_header(pb, &ff_asf_metadata_header);
522  avio_wl16(pb, 2 * has_aspect_ratio);
523  for (n = 0; n < s->nb_streams; n++) {
524  enc = s->streams[n]->codec;
525  if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
526  && enc->sample_aspect_ratio.num > 0
527  && enc->sample_aspect_ratio.den > 0) {
528  AVRational sar = enc->sample_aspect_ratio;
529  avio_wl16(pb, 0);
530  // the stream number is set like this below
531  avio_wl16(pb, n + 1);
532  avio_wl16(pb, 26); // name_len
533  avio_wl16(pb, 3); // value_type
534  avio_wl32(pb, 4); // value_len
535  avio_put_str16le(pb, "AspectRatioX");
536  avio_wl32(pb, sar.num);
537  avio_wl16(pb, 0);
538  // the stream number is set like this below
539  avio_wl16(pb, n + 1);
540  avio_wl16(pb, 26); // name_len
541  avio_wl16(pb, 3); // value_type
542  avio_wl32(pb, 4); // value_len
543  avio_put_str16le(pb, "AspectRatioY");
544  avio_wl32(pb, sar.den);
545  }
546  }
547  end_header(pb, hpos2);
548  }
549  {
550  int64_t pos1;
551  pos1 = avio_tell(pb);
552  avio_seek(pb, hpos + 42, SEEK_SET);
553  avio_wl32(pb, pos1 - hpos - 46);
554  avio_seek(pb, pos1, SEEK_SET);
555  }
556  end_header(pb, hpos);
557 
558  /* title and other infos */
559  if (has_title) {
560  int len;
561  uint8_t *buf;
562  AVIOContext *dyn_buf;
563 
564  if (avio_open_dyn_buf(&dyn_buf) < 0)
565  return AVERROR(ENOMEM);
566 
567  hpos = put_header(pb, &ff_asf_comment_header);
568 
569  for (n = 0; n < FF_ARRAY_ELEMS(tags); n++) {
570  len = tags[n] ? avio_put_str16le(dyn_buf, tags[n]->value) : 0;
571  avio_wl16(pb, len);
572  }
573  len = avio_close_dyn_buf(dyn_buf, &buf);
574  avio_write(pb, buf, len);
575  av_freep(&buf);
576  end_header(pb, hpos);
577  }
578  if (metadata_count) {
581  avio_wl16(pb, metadata_count);
582  while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
583  put_str16(pb, tag->key);
584  avio_wl16(pb, 0);
585  put_str16(pb, tag->value);
586  }
587  end_header(pb, hpos);
588  }
589  /* chapters using ASF markers */
590  if (!asf->is_streamed && s->nb_chapters) {
591  int ret;
592  if ((ret = asf_write_markers(s)) < 0)
593  return ret;
594  }
595  /* stream headers */
596  for (n = 0; n < s->nb_streams; n++) {
597  int64_t es_pos;
598  // ASFStream *stream = &asf->streams[n];
599 
600  enc = s->streams[n]->codec;
601  asf->streams[n].num = n + 1;
602  asf->streams[n].seq = 1;
603 
604  switch (enc->codec_type) {
605  case AVMEDIA_TYPE_AUDIO:
606  wav_extra_size = 0;
607  extra_size = 18 + wav_extra_size;
608  extra_size2 = 8;
609  break;
610  default:
611  case AVMEDIA_TYPE_VIDEO:
612  wav_extra_size = enc->extradata_size;
613  extra_size = 0x33 + wav_extra_size;
614  extra_size2 = 0;
615  break;
616  }
617 
618  hpos = put_header(pb, &ff_asf_stream_header);
619  if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
622  } else {
625  }
626  avio_wl64(pb, 0); /* ??? */
627  es_pos = avio_tell(pb);
628  avio_wl32(pb, extra_size); /* wav header len */
629  avio_wl32(pb, extra_size2); /* additional data len */
630  avio_wl16(pb, n + 1); /* stream number */
631  avio_wl32(pb, 0); /* ??? */
632 
633  if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
634  /* WAVEFORMATEX header */
636 
637  if (wavsize < 0)
638  return -1;
639  if (wavsize != extra_size) {
640  cur_pos = avio_tell(pb);
641  avio_seek(pb, es_pos, SEEK_SET);
642  avio_wl32(pb, wavsize); /* wav header len */
643  avio_seek(pb, cur_pos, SEEK_SET);
644  }
645  /* ERROR Correction */
646  avio_w8(pb, 0x01);
647  if (enc->codec_id == AV_CODEC_ID_ADPCM_G726 || !enc->block_align) {
648  avio_wl16(pb, 0x0190);
649  avio_wl16(pb, 0x0190);
650  } else {
651  avio_wl16(pb, enc->block_align);
652  avio_wl16(pb, enc->block_align);
653  }
654  avio_wl16(pb, 0x01);
655  avio_w8(pb, 0x00);
656  } else {
657  avio_wl32(pb, enc->width);
658  avio_wl32(pb, enc->height);
659  avio_w8(pb, 2); /* ??? */
660  avio_wl16(pb, 40 + enc->extradata_size); /* size */
661 
662  /* BITMAPINFOHEADER header */
663  ff_put_bmp_header(pb, enc, ff_codec_bmp_tags, 1, 0);
664  }
665  end_header(pb, hpos);
666  }
667 
668  /* media comments */
669 
672  avio_wl32(pb, s->nb_streams);
673  for (n = 0; n < s->nb_streams; n++) {
674  const AVCodecDescriptor *codec_desc;
675  const char *desc;
676 
677  enc = s->streams[n]->codec;
678  codec_desc = avcodec_descriptor_get(enc->codec_id);
679 
680  if (enc->codec_type == AVMEDIA_TYPE_AUDIO)
681  avio_wl16(pb, 2);
682  else if (enc->codec_type == AVMEDIA_TYPE_VIDEO)
683  avio_wl16(pb, 1);
684  else
685  avio_wl16(pb, -1);
686 
687  if (enc->codec_id == AV_CODEC_ID_WMAV2)
688  desc = "Windows Media Audio V8";
689  else
690  desc = codec_desc ? codec_desc->name : NULL;
691 
692  if (desc) {
693  AVIOContext *dyn_buf;
694  uint8_t *buf;
695  int len;
696 
697  if (avio_open_dyn_buf(&dyn_buf) < 0)
698  return AVERROR(ENOMEM);
699 
700  avio_put_str16le(dyn_buf, desc);
701  len = avio_close_dyn_buf(dyn_buf, &buf);
702  avio_wl16(pb, len / 2); // "number of characters" = length in bytes / 2
703 
704  avio_write(pb, buf, len);
705  av_freep(&buf);
706  } else
707  avio_wl16(pb, 0);
708 
709  avio_wl16(pb, 0); /* no parameters */
710 
711  /* id */
712  if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
713  avio_wl16(pb, 2);
714  avio_wl16(pb, enc->codec_tag);
715  } else {
716  avio_wl16(pb, 4);
717  avio_wl32(pb, enc->codec_tag);
718  }
719  if (!enc->codec_tag)
720  return -1;
721  }
722  end_header(pb, hpos);
723 
724  /* patch the header size fields */
725 
726  cur_pos = avio_tell(pb);
727  header_size = cur_pos - header_offset;
728  if (asf->is_streamed) {
729  header_size += 8 + 30 + DATA_HEADER_SIZE;
730 
731  avio_seek(pb, header_offset - 10 - 30, SEEK_SET);
732  avio_wl16(pb, header_size);
733  avio_seek(pb, header_offset - 2 - 30, SEEK_SET);
734  avio_wl16(pb, header_size);
735 
736  header_size -= 8 + 30 + DATA_HEADER_SIZE;
737  }
738  header_size += 24 + 6;
739  avio_seek(pb, header_offset - 14, SEEK_SET);
740  avio_wl64(pb, header_size);
741  avio_seek(pb, cur_pos, SEEK_SET);
742 
743  /* movie chunk, followed by packets of packet_size */
744  asf->data_offset = cur_pos;
746  avio_wl64(pb, data_chunk_size);
748  avio_wl64(pb, asf->nb_packets); /* nb packets */
749  avio_w8(pb, 1); /* ??? */
750  avio_w8(pb, 1); /* ??? */
751  return 0;
752 }
753 
755 {
756  ASFContext *asf = s->priv_data;
757 
758  s->packet_size = asf->packet_size;
759  s->max_interleave_delta = 0;
760  asf->nb_packets = 0;
761 
762  if (s->nb_streams > 127) {
763  av_log(s, AV_LOG_ERROR, "ASF can only handle 127 streams\n");
764  return AVERROR(EINVAL);
765  }
766 
767  asf->index_ptr = av_malloc(sizeof(ASFIndex) * ASF_INDEX_BLOCK);
768  if (!asf->index_ptr)
769  return AVERROR(ENOMEM);
771  asf->maximum_packet = 0;
772 
773  /* the data-chunk-size has to be 50 (DATA_HEADER_SIZE), which is
774  * data_size - asf->data_offset at the moment this function is done.
775  * It is needed to use asf as a streamable format. */
776  if (asf_write_header1(s, 0, DATA_HEADER_SIZE) < 0) {
777  //av_free(asf);
778  av_freep(&asf->index_ptr);
779  return -1;
780  }
781 
782  avio_flush(s->pb);
783 
784  asf->packet_nb_payloads = 0;
785  asf->packet_timestamp_start = -1;
786  asf->packet_timestamp_end = -1;
787  ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
788  NULL, NULL, NULL, NULL);
789 
790  if (s->avoid_negative_ts < 0)
791  s->avoid_negative_ts = 1;
792 
793  return 0;
794 }
795 
797 {
798  ASFContext *asf = s->priv_data;
799 
800  asf->is_streamed = 1;
801 
802  return asf_write_header(s);
803 }
804 
806  unsigned sendtime, unsigned duration,
807  int nb_payloads, int padsize)
808 {
809  ASFContext *asf = s->priv_data;
810  AVIOContext *pb = s->pb;
811  int ppi_size, i;
812  int64_t start = avio_tell(pb);
813 
814  int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
815 
816  padsize -= PACKET_HEADER_MIN_SIZE;
817  if (asf->multi_payloads_present)
818  padsize--;
819  av_assert0(padsize >= 0);
820 
822  for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++)
823  avio_w8(pb, 0x0);
824 
825  if (asf->multi_payloads_present)
826  iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
827 
828  if (padsize > 0) {
829  if (padsize < 256)
830  iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
831  else
832  iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
833  }
834  avio_w8(pb, iLengthTypeFlags);
835 
837 
838  if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
839  avio_wl16(pb, padsize - 2);
840  if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
841  avio_w8(pb, padsize - 1);
842 
843  avio_wl32(pb, sendtime);
844  avio_wl16(pb, duration);
845  if (asf->multi_payloads_present)
846  avio_w8(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
847 
848  ppi_size = avio_tell(pb) - start;
849 
850  return ppi_size;
851 }
852 
854 {
855  ASFContext *asf = s->priv_data;
856  int packet_hdr_size, packet_filled_size;
857 
859 
860  if (asf->is_streamed)
861  put_chunk(s, 0x4424, s->packet_size, 0);
862 
863  packet_hdr_size = put_payload_parsing_info(s,
866  asf->packet_nb_payloads,
867  asf->packet_size_left);
868 
869  packet_filled_size = asf->packet_size - asf->packet_size_left;
870  av_assert0(packet_hdr_size <= asf->packet_size_left);
871  memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
872 
873  avio_write(s->pb, asf->packet_buf, s->packet_size - packet_hdr_size);
874 
875  avio_flush(s->pb);
876  asf->nb_packets++;
877  asf->packet_nb_payloads = 0;
878  asf->packet_timestamp_start = -1;
879  asf->packet_timestamp_end = -1;
880  ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
881  NULL, NULL, NULL, NULL);
882 }
883 
885  int64_t presentation_time, int m_obj_size,
886  int m_obj_offset, int payload_len, int flags)
887 {
888  ASFContext *asf = s->priv_data;
889  AVIOContext *pb = &asf->pb;
890  int val;
891 
892  val = stream->num;
893  if (flags & AV_PKT_FLAG_KEY)
894  val |= ASF_PL_FLAG_KEY_FRAME;
895  avio_w8(pb, val);
896 
897  avio_w8(pb, stream->seq); // Media object number
898  avio_wl32(pb, m_obj_offset); // Offset Into Media Object
899 
900  // Replicated Data shall be at least 8 bytes long.
901  // The first 4 bytes of data shall contain the
902  // Size of the Media Object that the payload belongs to.
903  // The next 4 bytes of data shall contain the
904  // Presentation Time for the media object that the payload belongs to.
906 
907  avio_wl32(pb, m_obj_size); // Replicated Data - Media Object Size
908  avio_wl32(pb, (uint32_t) presentation_time); // Replicated Data - Presentation Time
909 
910  if (asf->multi_payloads_present) {
911  avio_wl16(pb, payload_len); // payload length
912  }
913 }
914 
915 static void put_frame(AVFormatContext *s, ASFStream *stream, AVStream *avst,
916  int64_t timestamp, const uint8_t *buf,
917  int m_obj_size, int flags)
918 {
919  ASFContext *asf = s->priv_data;
920  int m_obj_offset, payload_len, frag_len1;
921 
922  m_obj_offset = 0;
923  while (m_obj_offset < m_obj_size) {
924  payload_len = m_obj_size - m_obj_offset;
925  if (asf->packet_timestamp_start == -1) {
926  const int multi_payload_constant = (asf->packet_size - MULTI_PAYLOAD_HEADERS);
927  asf->multi_payloads_present = (payload_len < multi_payload_constant);
928 
929  asf->packet_size_left = asf->packet_size;
930  if (asf->multi_payloads_present) {
931  frag_len1 = multi_payload_constant - 1;
932  } else {
933  frag_len1 = asf->packet_size - SINGLE_PAYLOAD_HEADERS;
934  }
935  asf->packet_timestamp_start = timestamp;
936  } else {
937  // multi payloads
938  frag_len1 = asf->packet_size_left -
941 
942  if (frag_len1 < payload_len &&
943  avst->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
944  flush_packet(s);
945  continue;
946  }
947  if (asf->packet_timestamp_start > INT64_MAX - UINT16_MAX ||
948  timestamp > asf->packet_timestamp_start + UINT16_MAX) {
949  flush_packet(s);
950  continue;
951  }
952  }
953  if (frag_len1 > 0) {
954  if (payload_len > frag_len1)
955  payload_len = frag_len1;
956  else if (payload_len == (frag_len1 - 1))
957  payload_len = frag_len1 - 2; // additional byte need to put padding length
958 
959  put_payload_header(s, stream, timestamp + PREROLL_TIME,
960  m_obj_size, m_obj_offset, payload_len, flags);
961  avio_write(&asf->pb, buf, payload_len);
962 
963  if (asf->multi_payloads_present)
965  else
967  asf->packet_timestamp_end = timestamp;
968 
969  asf->packet_nb_payloads++;
970  } else {
971  payload_len = 0;
972  }
973  m_obj_offset += payload_len;
974  buf += payload_len;
975 
976  if (!asf->multi_payloads_present)
977  flush_packet(s);
979  flush_packet(s);
981  flush_packet(s);
982  }
983  stream->seq++;
984 }
985 
986 static int update_index(AVFormatContext *s, int start_sec,
987  uint32_t packet_number, uint16_t packet_count,
988  uint64_t packet_offset)
989 {
990  ASFContext *asf = s->priv_data;
991 
992  if (start_sec > asf->next_start_sec) {
993  int i;
994 
995  if (!asf->next_start_sec) {
996  asf->next_packet_number = packet_number;
997  asf->next_packet_count = packet_count;
998  asf->next_packet_offset = packet_offset;
999  }
1000 
1001  if (start_sec > asf->nb_index_memory_alloc) {
1002  int err;
1003  asf->nb_index_memory_alloc = (start_sec + ASF_INDEX_BLOCK) & ~(ASF_INDEX_BLOCK - 1);
1004  if ((err = av_reallocp_array(&asf->index_ptr,
1005  asf->nb_index_memory_alloc,
1006  sizeof(*asf->index_ptr))) < 0) {
1007  asf->nb_index_memory_alloc = 0;
1008  return err;
1009  }
1010  }
1011  for (i = asf->next_start_sec; i < start_sec; i++) {
1013  asf->index_ptr[i].packet_count = asf->next_packet_count;
1014  asf->index_ptr[i].send_time = asf->next_start_sec * INT64_C(10000000);
1015  asf->index_ptr[i].offset = asf->next_packet_offset;
1016 
1017  }
1018  }
1019  asf->maximum_packet = FFMAX(asf->maximum_packet, packet_count);
1020  asf->next_packet_number = packet_number;
1021  asf->next_packet_count = packet_count;
1022  asf->next_packet_offset = packet_offset;
1023  asf->next_start_sec = start_sec;
1024 
1025  return 0;
1026 }
1027 
1029 {
1030  ASFContext *asf = s->priv_data;
1031  AVIOContext *pb = s->pb;
1032  ASFStream *stream;
1033  AVCodecContext *codec;
1034  uint32_t packet_number;
1035  int64_t pts;
1036  int start_sec;
1037  int flags = pkt->flags;
1038  int ret;
1039  uint64_t offset = avio_tell(pb);
1040 
1041  codec = s->streams[pkt->stream_index]->codec;
1042  stream = &asf->streams[pkt->stream_index];
1043 
1044  if (codec->codec_type == AVMEDIA_TYPE_AUDIO)
1045  flags &= ~AV_PKT_FLAG_KEY;
1046 
1047  pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
1048  av_assert0(pts != AV_NOPTS_VALUE);
1049  if ( pts < - PREROLL_TIME
1050  || pts > (INT_MAX-3)/10000LL * ASF_INDEXED_INTERVAL - PREROLL_TIME) {
1051  av_log(s, AV_LOG_ERROR, "input pts %"PRId64" is invalid\n", pts);
1052  return AVERROR(EINVAL);
1053  }
1054  pts *= 10000;
1055  asf->duration = FFMAX(asf->duration, pts + pkt->duration * 10000);
1056 
1057  packet_number = asf->nb_packets;
1058  put_frame(s, stream, s->streams[pkt->stream_index],
1059  pkt->dts, pkt->data, pkt->size, flags);
1060 
1061  start_sec = (int)((PREROLL_TIME * 10000 + pts + ASF_INDEXED_INTERVAL - 1)
1063 
1064  /* check index */
1065  if ((!asf->is_streamed) && (flags & AV_PKT_FLAG_KEY)) {
1066  uint16_t packet_count = asf->nb_packets - packet_number;
1067  ret = update_index(s, start_sec, packet_number, packet_count, offset);
1068  if (ret < 0)
1069  return ret;
1070  }
1071  asf->end_sec = start_sec;
1072 
1073  return 0;
1074 }
1075 
1077  uint16_t max, uint32_t count)
1078 {
1079  AVIOContext *pb = s->pb;
1080  int i;
1081 
1083  avio_wl64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2) * count);
1086  avio_wl32(pb, max);
1087  avio_wl32(pb, count);
1088  for (i = 0; i < count; i++) {
1089  avio_wl32(pb, index[i].packet_number);
1090  avio_wl16(pb, index[i].packet_count);
1091  }
1092 
1093  return 0;
1094 }
1095 
1097 {
1098  ASFContext *asf = s->priv_data;
1099  int64_t file_size, data_size;
1100  int ret;
1101 
1102  /* flush the current packet */
1103  if (asf->pb.buf_ptr > asf->pb.buffer)
1104  flush_packet(s);
1105 
1106  /* write index */
1107  data_size = avio_tell(s->pb);
1108  if (!asf->is_streamed && asf->next_start_sec) {
1109  if ((ret = update_index(s, asf->end_sec + 1, 0, 0, 0)) < 0)
1110  return ret;
1112  }
1113  avio_flush(s->pb);
1114 
1115  if (asf->is_streamed || !s->pb->seekable) {
1116  put_chunk(s, 0x4524, 0, 0); /* end of stream */
1117  } else {
1118  /* rewrite an updated header */
1119  file_size = avio_tell(s->pb);
1120  avio_seek(s->pb, 0, SEEK_SET);
1121  asf_write_header1(s, file_size, data_size - asf->data_offset);
1122  }
1123 
1124  av_freep(&asf->index_ptr);
1125  return 0;
1126 }
1127 
1128 static const AVOption asf_options[] = {
1129  { "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 },
1130  { NULL },
1131 };
1132 
1133 #if CONFIG_ASF_MUXER
1134 static const AVClass asf_muxer_class = {
1135  .class_name = "ASF muxer",
1136  .item_name = av_default_item_name,
1137  .option = asf_options,
1138  .version = LIBAVUTIL_VERSION_INT,
1139 };
1140 
1141 AVOutputFormat ff_asf_muxer = {
1142  .name = "asf",
1143  .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
1144  .mime_type = "video/x-ms-asf",
1145  .extensions = "asf,wmv,wma",
1146  .priv_data_size = sizeof(ASFContext),
1147  .audio_codec = AV_CODEC_ID_WMAV2,
1148  .video_codec = AV_CODEC_ID_MSMPEG4V3,
1153  .codec_tag = (const AVCodecTag * const []) {
1155  },
1156  .priv_class = &asf_muxer_class,
1157 };
1158 #endif /* CONFIG_ASF_MUXER */
1159 
1160 #if CONFIG_ASF_STREAM_MUXER
1161 static const AVClass asf_stream_muxer_class = {
1162  .class_name = "ASF stream muxer",
1163  .item_name = av_default_item_name,
1164  .option = asf_options,
1165  .version = LIBAVUTIL_VERSION_INT,
1166 };
1167 
1168 AVOutputFormat ff_asf_stream_muxer = {
1169  .name = "asf_stream",
1170  .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
1171  .mime_type = "video/x-ms-asf",
1172  .extensions = "asf,wmv,wma",
1173  .priv_data_size = sizeof(ASFContext),
1174  .audio_codec = AV_CODEC_ID_WMAV2,
1175  .video_codec = AV_CODEC_ID_MSMPEG4V3,
1180  .codec_tag = (const AVCodecTag * const []) {
1182  },
1183  .priv_class = &asf_stream_muxer_class,
1184 };
1185 #endif /* CONFIG_ASF_STREAM_MUXER */
unsigned int nb_chapters
Number of chapters in AVChapter array.
Definition: avformat.h:1517
uint32_t palette[256]
Definition: asfdec_f.c:68
const ff_asf_guid ff_asf_header
Definition: asf.c:23
unsigned int packet_size
Definition: avformat.h:1418
#define NULL
Definition: coverity.c:32
const char const char void * val
Definition: avisynth_c.h:634
void avio_wl16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:424
static int asf_write_markers(AVFormatContext *s)
Definition: asfenc.c:342
const char * s
Definition: avisynth_c.h:631
Bytestream IO Context.
Definition: avio.h:111
#define ASF_PAYLOAD_FLAGS
Definition: asfenc.c:57
const char * languages[128]
Definition: asfenc.c:227
int packet_size
Definition: asfenc.c:252
int packet_obj_size
Definition: asfdec_f.c:53
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1168
AVOption.
Definition: opt.h:245
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:161
#define PACKET_SIZE_MIN
Definition: asfenc.c:188
void ff_put_guid(AVIOContext *s, const ff_asf_guid *g)
Definition: riffenc.c:324
int64_t bit_rate
the average bitrate
Definition: avcodec.h:1597
#define LIBAVUTIL_VERSION_INT
Definition: version.h:70
unsigned char * buf_ptr
Current position in the buffer.
Definition: avio.h:174
unsigned int packet_nb_payloads
Definition: asfenc.c:238
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:4149
const char * g
Definition: vf_curves.c:108
int is_streamed
Definition: asfenc.c:225
#define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS
Definition: asfenc.c:168
int num
Definition: asfdec_f.c:48
Definition: asf.h:65
static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: asfenc.c:1028
uint64_t data_offset
beginning of the first data packet
Definition: asfdec_f.c:85
int64_t creation_time
Definition: asfenc.c:229
int num
numerator
Definition: rational.h:44
static int asf_write_index(AVFormatContext *s, const ASFIndex *index, uint16_t max, uint32_t count)
Definition: asfenc.c:1076
int size
Definition: avcodec.h:1468
uint32_t next_packet_number
Definition: asfenc.c:247
int av_dict_count(const AVDictionary *m)
Get number of entries in dictionary.
Definition: dict.c:34
uint32_t packet_size
Definition: asfdec_o.c:102
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:208
int skip_to_key
Definition: asfdec_f.c:56
int palette_changed
Definition: asfdec_f.c:67
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel...
Definition: avcodec.h:1935
unsigned char * buffer
Start of the buffer.
Definition: avio.h:172
static int put_payload_parsing_info(AVFormatContext *s, unsigned sendtime, unsigned duration, int nb_payloads, int padsize)
Definition: asfenc.c:805
uint16_t maximum_packet
Definition: asfenc.c:246
static AVPacket pkt
static int asf_write_trailer(AVFormatContext *s)
Definition: asfenc.c:1096
uint64_t offset
Definition: asf.h:69
AVDictionary * metadata
Definition: avformat.h:1281
uint16_t next_packet_count
Definition: asfenc.c:248
uint32_t packet_number
Definition: asf.h:66
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1156
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs...
Definition: avcodec.h:2324
#define SINGLE_PAYLOAD_HEADERS
Definition: asfenc.c:176
const ff_asf_guid ff_asf_reserved_4
Definition: asf.c:120
Format I/O context.
Definition: avformat.h:1314
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
int64_t duration
Definition: asfdec_f.c:55
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
AVClass * av_class
Definition: asfenc.c:223
Public dictionary API.
#define ASF_INDEX_BLOCK
Definition: asfenc.c:35
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:324
AVIOContext pb
Definition: asfenc.c:240
uint8_t
#define av_malloc(s)
const ff_asf_guid ff_asf_audio_stream
Definition: asf.c:39
AVOptions.
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:1485
static int asf_write_header(AVFormatContext *s)
Definition: asfenc.c:754
ASFStream streams[128]
it's max number and it's not that big
Definition: asfdec_f.c:77
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1382
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:39
uint8_t * data
Definition: avcodec.h:1467
int64_t max_interleave_delta
Maximum buffering duration for interleaving.
Definition: avformat.h:1590
uint32_t tag
Definition: movenc.c:1348
AVPacket pkt
Definition: asfdec_f.c:51
#define ASF_PPI_LENGTH_TYPE_FLAGS
Definition: asfenc.c:55
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:442
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:182
#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:275
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1499
void avio_wl64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:412
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:224
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:4743
int av_reallocp_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:215
#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:1528
#define PREROLL_TIME
Definition: asfenc.c:262
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
av_default_item_name
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:884
#define DATA_HEADER_SIZE
Definition: asfenc.c:185
#define AVERROR(e)
Definition: error.h:43
const char * av_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:176
int64_t packet_timestamp_start
Definition: asfenc.c:236
const ff_asf_guid ff_asf_video_conceal_none
Definition: asf.c:61
int ds_chunk_size
Definition: asfdec_f.c:61
static const AVOption asf_options[]
Definition: asfenc.c:1128
AVChapter ** chapters
Definition: avformat.h:1518
simple assert() macros that are a bit more flexible than ISO C assert().
GLsizei GLsizei * length
Definition: opengl_enc.c:115
#define ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD
Definition: asf.h:133
int pkt_clean
Definition: asfdec_f.c:57
int frag_offset
Definition: asfdec_f.c:52
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
GLsizei count
Definition: opengl_enc.c:109
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:420
#define FFMAX(a, b)
Definition: common.h:94
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1473
const AVCodecDescriptor * avcodec_descriptor_get(enum AVCodecID id)
Definition: codec_desc.c:2900
#define MULTI_PAYLOAD_HEADERS
Definition: asfenc.c:180
AVCodecContext * codec
Codec context associated with this stream.
Definition: avformat.h:896
#define ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT
Definition: asf.h:125
uint16_t size
Definition: asfdec_f.c:44
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1370
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:207
int void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:202
uint64_t send_time
Definition: asf.h:68
const AVCodecTag ff_codec_bmp_tags[]
Definition: riff.c:32
int width
picture width / height.
Definition: avcodec.h:1711
static void put_chunk(AVFormatContext *s, int type, int payload_length, int flags)
Definition: asfenc.c:301
#define ASF_PACKET_ERROR_CORRECTION_FLAGS
Definition: asfenc.c:39
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
const ff_asf_guid ff_asf_extended_content_header
Definition: asf.c:92
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:94
#define AVFMT_GLOBALHEADER
Format wants global header.
Definition: avformat.h:484
static int32_t get_send_time(ASFContext *asf, int64_t pres_time, uint64_t *offset)
Definition: asfenc.c:327
#define ASF_PAYLOADS_PER_PACKET
Definition: asfenc.c:36
const char * name
Definition: avformat.h:523
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
int timestamp
Definition: asfdec_f.c:54
int32_t
int64_t duration
Definition: movenc-test.c:63
#define ASF_PAYLOAD_REPLICATED_DATA_LENGTH
Definition: asfenc.c:159
int next_start_sec
Definition: asfenc.c:250
int avoid_negative_ts
Avoid negative timestamps during muxing.
Definition: avformat.h:1619
int n
Definition: avisynth_c.h:547
AVDictionary * metadata
Definition: avformat.h:951
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:132
const ff_asf_guid ff_asf_extended_stream_properties_object
Definition: asf.c:146
uint8_t ff_asf_guid[16]
Definition: riff.h:89
Stream structure.
Definition: avformat.h:877
#define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE
Definition: asfenc.c:38
#define ASF_PPI_PROPERTY_FLAGS
Definition: asfenc.c:49
int ds_span
Definition: asfdec_f.c:59
enum AVMediaType codec_type
Definition: avcodec.h:1540
const ff_asf_guid ff_asf_file_header
Definition: asf.c:27
enum AVCodecID codec_id
Definition: avcodec.h:1549
AVIOContext * pb
I/O context.
Definition: avformat.h:1356
const ff_asf_guid ff_asf_video_stream
Definition: asf.c:53
int64_t packet_timestamp_end
Definition: asfenc.c:237
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:160
main external API structure.
Definition: avcodec.h:1532
uint16_t stream_language_index
Definition: asfdec_f.c:65
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:1564
void * buf
Definition: avisynth_c.h:553
static void flush_packet(AVFormatContext *s)
Definition: asfenc.c:853
GLint GLenum type
Definition: opengl_enc.c:105
int extradata_size
Definition: avcodec.h:1648
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:69
Describe the class of an AVClass context structure.
Definition: log.h:67
int index
Definition: gxfenc.c:89
rational number numerator/denominator
Definition: rational.h:43
void ff_put_bmp_header(AVIOContext *pb, AVCodecContext *enc, const AVCodecTag *tags, int for_asf, int ignore_extradata)
Definition: riffenc.c:206
int ds_packet_size
Definition: asfdec_f.c:60
const ff_asf_guid ff_asf_stream_header
Definition: asf.c:31
static const AVCodecTag codec_asf_bmp_tags[]
Definition: asfenc.c:255
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:151
const char * name
Name of the codec described by this descriptor.
Definition: avcodec.h:569
static int64_t put_header(AVIOContext *pb, const ff_asf_guid *g)
Definition: asfenc.c:279
#define PACKET_SIZE_MAX
Definition: asfenc.c:187
int64_t duration
in 100ns units
Definition: asfenc.c:232
misc parsing utilities
static int64_t unix_to_file_time(int64_t ti)
Definition: asfenc.c:318
This struct describes the properties of a single codec described by an AVCodecID. ...
Definition: avcodec.h:561
#define ASF_INDEXED_INTERVAL
Definition: asfenc.c:34
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:915
ASFPayload payload[8]
Definition: asfdec_f.c:71
static int64_t pts
Global timestamp for the audio frames.
static int flags
Definition: cpu.c:47
ASFIndex * index_ptr
Definition: asfenc.c:244
uint8_t type
Definition: asfdec_f.c:43
int64_t start
Definition: avformat.h:1280
int nb_languages
Definition: asfenc.c:228
int64_t packet_pos
Definition: asfdec_f.c:63
const ff_asf_guid ff_asf_language_guid
Definition: asf.c:130
Main libavformat public API header.
static void end_header(AVIOContext *pb, int64_t pos)
Definition: asfenc.c:290
uint8_t packet_buf[PACKET_SIZE_MAX]
Definition: asfenc.c:239
#define ASF_PL_FLAG_KEY_FRAME
Definition: asf.h:165
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:101
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:1279
char * key
Definition: dict.h:87
int den
denominator
Definition: rational.h:45
void ff_metadata_conv(AVDictionary **pm, const AVMetadataConv *d_conv, const AVMetadataConv *s_conv)
Definition: metadata.c:26
int payload_ext_ct
Definition: asfdec_f.c:70
static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size)
Definition: asfenc.c:386
char * value
Definition: dict.h:88
int len
int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc, int flags)
Write WAVEFORMAT header structure.
Definition: riffenc.c:54
void * priv_data
Format private data.
Definition: avformat.h:1342
uint32_t nb_index_memory_alloc
Definition: asfenc.c:245
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:497
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1466
int duration
Definition: asfdec_o.c:104
static int asf_write_stream_header(AVFormatContext *s)
Definition: asfenc.c:796
#define av_freep(p)
static void put_str16(AVIOContext *s, const char *tag)
Definition: asfenc.c:264
void INT64 start
Definition: avisynth_c.h:553
#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:72
uint16_t packet_count
Definition: asf.h:67
#define PACKET_HEADER_MIN_SIZE
Definition: asfenc.c:147
const ff_asf_guid ff_asf_marker_header
Definition: asf.c:116
int stream_index
Definition: avcodec.h:1469
int end_sec
Definition: asfenc.c:251
static int update_index(AVFormatContext *s, int start_sec, uint32_t packet_number, uint16_t packet_count, uint64_t packet_offset)
Definition: asfenc.c:986
unsigned char multi_payloads_present
Definition: asfenc.c:234
#define MKTAG(a, b, c, d)
Definition: common.h:342
This structure stores compressed data.
Definition: avcodec.h:1444
static int write_packet(AVFormatContext *s1, AVPacket *pkt)
Definition: v4l2enc.c:86
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1460
uint64_t next_packet_offset
Definition: asfenc.c:249
3-char terminologic language codes as per ISO-IEC 639-2
Definition: avlanguage.h:30
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:240
#define FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX
Tell ff_put_wav_header() to use WAVEFORMATEX even for PCM codecs.
Definition: riff.h:53