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Imported Debian version 2.5.0~trusty1.1
[deb_ffmpeg.git] / ffmpeg / libavformat / asfenc.c
CommitLineData
2ba45a60
DM		 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 "avformat.h"
26#include "avio_internal.h"
27#include "internal.h"
28#include "riff.h"
29#include "asf.h"
30
31#undef NDEBUG
32#include <assert.h>
33
34
35#define ASF_INDEXED_INTERVAL 10000000
36#define ASF_INDEX_BLOCK (1<<9)
37#define ASF_PAYLOADS_PER_PACKET 63
38
39#define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
40#define ASF_PACKET_ERROR_CORRECTION_FLAGS \
41 (ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
42 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE)
43
44#if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0)
45# define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1
46#else
47# define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0
48#endif
49
50#define ASF_PPI_PROPERTY_FLAGS \
51 (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \
52 ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \
53 ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \
54 ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE)
55
56#define ASF_PPI_LENGTH_TYPE_FLAGS 0
57
58#define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD
59
60#if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
61# define ASF_PPI_SEQUENCE_FIELD_SIZE 1
62#endif
63#if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
64# define ASF_PPI_SEQUENCE_FIELD_SIZE 2
65#endif
66#if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
67# define ASF_PPI_SEQUENCE_FIELD_SIZE 4
68#endif
69#ifndef ASF_PPI_SEQUENCE_FIELD_SIZE
70# define ASF_PPI_SEQUENCE_FIELD_SIZE 0
71#endif
72
73#if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
74# define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 1
75#endif
76#if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
77# define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 2
78#endif
79#if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
80# define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 4
81#endif
82#ifndef ASF_PPI_PACKET_LENGTH_FIELD_SIZE
83# define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 0
84#endif
85
86#if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
87# define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 1
88#endif
89#if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
90# define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 2
91#endif
92#if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
93# define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 4
94#endif
95#ifndef ASF_PPI_PADDING_LENGTH_FIELD_SIZE
96# define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 0
97#endif
98
99#if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
100# define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 1
101#endif
102#if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
103# define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 2
104#endif
105#if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
106# define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 4
107#endif
108#ifndef ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE
109# define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 0
110#endif
111
112#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))
113# define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 1
114#endif
115#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))
116# define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 2
117#endif
118#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))
119# define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 4
120#endif
121#ifndef ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE
122# define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 0
123#endif
124
125#if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
126# define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 1
127#endif
128#if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
129# define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 2
130#endif
131#if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
132# define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 4
133#endif
134#ifndef ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE
135# define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 0
136#endif
137
138#if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
139# define ASF_PAYLOAD_LENGTH_FIELD_SIZE 1
140#endif
141#if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
142# define ASF_PAYLOAD_LENGTH_FIELD_SIZE 2
143#endif
144#ifndef ASF_PAYLOAD_LENGTH_FIELD_SIZE
145# define ASF_PAYLOAD_LENGTH_FIELD_SIZE 0
146#endif
147
148#define PACKET_HEADER_MIN_SIZE \
149 (ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE + \
150 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE + \
151 1 + /* Length Type Flags */ \
152 1 + /* Property Flags */ \
153 ASF_PPI_PACKET_LENGTH_FIELD_SIZE + \
154 ASF_PPI_SEQUENCE_FIELD_SIZE + \
155 ASF_PPI_PADDING_LENGTH_FIELD_SIZE + \
156 4 + /* Send Time Field */ \
157 2) /* Duration Field */
158
159// Replicated Data shall be at least 8 bytes long.
160#define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08
161
162#define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \
163 (1 + /* Stream Number */ \
164 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
165 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
166 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
167 ASF_PAYLOAD_REPLICATED_DATA_LENGTH)
168
169#define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \
170 (1 + /* Stream Number */ \
171 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
172 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
173 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
174 ASF_PAYLOAD_REPLICATED_DATA_LENGTH + \
175 ASF_PAYLOAD_LENGTH_FIELD_SIZE)
176
177#define SINGLE_PAYLOAD_DATA_LENGTH \
178 (PACKET_SIZE - \
179 PACKET_HEADER_MIN_SIZE - \
180 PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD)
181
182#define MULTI_PAYLOAD_CONSTANT \
183 (PACKET_SIZE - \
184 PACKET_HEADER_MIN_SIZE - \
185 1 - /* Payload Flags */ \
186 2 * PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS)
187
188#define DATA_HEADER_SIZE 50
189
190typedef struct {
191 uint32_t seqno;
192 int is_streamed;
193 ASFStream streams[128]; ///< it's max number and it's not that big
194 /* non streamed additonnal info */
195 uint64_t nb_packets; ///< how many packets are there in the file, invalid if broadcasting
196 int64_t duration; ///< in 100ns units
197 /* packet filling */
198 unsigned char multi_payloads_present;
199 int packet_size_left;
200 int64_t packet_timestamp_start;
201 int64_t packet_timestamp_end;
202 unsigned int packet_nb_payloads;
203 uint8_t packet_buf[PACKET_SIZE];
204 AVIOContext pb;
205 /* only for reading */
206 uint64_t data_offset; ///< beginning of the first data packet
207
208 ASFIndex *index_ptr;
209 uint32_t nb_index_memory_alloc;
210 uint16_t maximum_packet;
211 uint32_t next_packet_number;
212 uint16_t next_packet_count;
213 uint64_t next_packet_offset;
214 int next_start_sec;
215 int end_sec;
216} ASFContext;
217
218static const AVCodecTag codec_asf_bmp_tags[] = {
219 { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
220 { AV_CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
221 { AV_CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
222 { AV_CODEC_ID_NONE, 0 },
223};
224
225#define PREROLL_TIME 3100
226
227static void put_str16(AVIOContext *s, const char *tag)
228{
229 int len;
230 uint8_t *pb;
231 AVIOContext *dyn_buf;
232 if (avio_open_dyn_buf(&dyn_buf) < 0)
233 return;
234
235 avio_put_str16le(dyn_buf, tag);
236 len = avio_close_dyn_buf(dyn_buf, &pb);
237 avio_wl16(s, len);
238 avio_write(s, pb, len);
239 av_freep(&pb);
240}
241
242static int64_t put_header(AVIOContext *pb, const ff_asf_guid *g)
243{
244 int64_t pos;
245
246 pos = avio_tell(pb);
247 ff_put_guid(pb, g);
248 avio_wl64(pb, 24);
249 return pos;
250}
251
252/* update header size */
253static void end_header(AVIOContext *pb, int64_t pos)
254{
255 int64_t pos1;
256
257 pos1 = avio_tell(pb);
258 avio_seek(pb, pos + 16, SEEK_SET);
259 avio_wl64(pb, pos1 - pos);
260 avio_seek(pb, pos1, SEEK_SET);
261}
262
263/* write an asf chunk (only used in streaming case) */
264static void put_chunk(AVFormatContext *s, int type,
265 int payload_length, int flags)
266{
267 ASFContext *asf = s->priv_data;
268 AVIOContext *pb = s->pb;
269 int length;
270
271 length = payload_length + 8;
272 avio_wl16(pb, type);
273 avio_wl16(pb, length); // size
274 avio_wl32(pb, asf->seqno); // sequence number
275 avio_wl16(pb, flags); // unknown bytes
276 avio_wl16(pb, length); // size_confirm
277 asf->seqno++;
278}
279
280/* convert from unix to windows time */
281static int64_t unix_to_file_time(int ti)
282{
283 int64_t t;
284
285 t = ti * INT64_C(10000000);
286 t += INT64_C(116444736000000000);
287 return t;
288}
289
290static int32_t get_send_time(ASFContext *asf, int64_t pres_time, uint64_t *offset)
291{
292 int i;
293 int32_t send_time = 0;
294 *offset = asf->data_offset + DATA_HEADER_SIZE;
295 for (i = 0; i < asf->next_start_sec; i++) {
296 if (pres_time <= asf->index_ptr[i].send_time)
297 break;
298 send_time = asf->index_ptr[i].send_time;
299 *offset = asf->index_ptr[i].offset;
300 }
301
302 return send_time / 10000;
303}
304
305static int asf_write_markers(AVFormatContext *s)
306{
307 ASFContext *asf = s->priv_data;
308 AVIOContext *pb = s->pb;
309 int i;
310 AVRational scale = {1, 10000000};
311 int64_t hpos = put_header(pb, &ff_asf_marker_header);
312
313 ff_put_guid(pb, &ff_asf_reserved_4);// ASF spec mandates this reserved value
314 avio_wl32(pb, s->nb_chapters); // markers count
315 avio_wl16(pb, 0); // ASF spec mandates 0 for this
316 avio_wl16(pb, 0); // name length 0, no name given
317
318 for (i = 0; i < s->nb_chapters; i++) {
319 AVChapter *c = s->chapters[i];
320 AVDictionaryEntry *t = av_dict_get(c->metadata, "title", NULL, 0);
321 int64_t pres_time = av_rescale_q(c->start, c->time_base, scale);
322 uint64_t offset;
323 int32_t send_time = get_send_time(asf, pres_time, &offset);
324 int len = 0;
325 uint8_t *buf;
326 AVIOContext *dyn_buf;
327 if (t) {
328 if (avio_open_dyn_buf(&dyn_buf) < 0)
329 return AVERROR(ENOMEM);
330 avio_put_str16le(dyn_buf, t->value);
331 len = avio_close_dyn_buf(dyn_buf, &buf);
332 }
333 avio_wl64(pb, offset); // offset of the packet with send_time
334 avio_wl64(pb, pres_time + PREROLL_TIME * 10000); // presentation time
335 avio_wl16(pb, 12 + len); // entry length
336 avio_wl32(pb, send_time); // send time
337 avio_wl32(pb, 0); // flags, should be 0
338 avio_wl32(pb, len / 2); // marker desc length in WCHARS!
339 if (t) {
340 avio_write(pb, buf, len); // marker desc
341 av_freep(&buf);
342 }
343 }
344 end_header(pb, hpos);
345 return 0;
346}
347
348/* write the header (used two times if non streamed) */
349static int asf_write_header1(AVFormatContext *s, int64_t file_size,
350 int64_t data_chunk_size)
351{
352 ASFContext *asf = s->priv_data;
353 AVIOContext *pb = s->pb;
354 AVDictionaryEntry *tags[5];
355 int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
356 int has_title, has_aspect_ratio = 0;
357 int metadata_count;
358 AVCodecContext *enc;
359 int64_t header_offset, cur_pos, hpos;
360 int bit_rate;
361 int64_t duration;
362
363 ff_metadata_conv(&s->metadata, ff_asf_metadata_conv, NULL);
364
365 tags[0] = av_dict_get(s->metadata, "title", NULL, 0);
366 tags[1] = av_dict_get(s->metadata, "author", NULL, 0);
367 tags[2] = av_dict_get(s->metadata, "copyright", NULL, 0);
368 tags[3] = av_dict_get(s->metadata, "comment", NULL, 0);
369 tags[4] = av_dict_get(s->metadata, "rating", NULL, 0);
370
371 duration = asf->duration + PREROLL_TIME * 10000;
372 has_title = tags[0] || tags[1] || tags[2] || tags[3] || tags[4];
373 metadata_count = av_dict_count(s->metadata);
374
375 bit_rate = 0;
376 for (n = 0; n < s->nb_streams; n++) {
377 enc = s->streams[n]->codec;
378
379 avpriv_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
380
381 bit_rate += enc->bit_rate;
382 if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
383 && enc->sample_aspect_ratio.num > 0
384 && enc->sample_aspect_ratio.den > 0)
385 has_aspect_ratio++;
386 }
387
388 if (asf->is_streamed) {
389 put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
390 }
391
392 ff_put_guid(pb, &ff_asf_header);
393 avio_wl64(pb, -1); /* header length, will be patched after */
394 avio_wl32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */
395 avio_w8(pb, 1); /* ??? */
396 avio_w8(pb, 2); /* ??? */
397
398 /* file header */
399 header_offset = avio_tell(pb);
400 hpos = put_header(pb, &ff_asf_file_header);
401 ff_put_guid(pb, &ff_asf_my_guid);
402 avio_wl64(pb, file_size);
403 file_time = 0;
404 avio_wl64(pb, unix_to_file_time(file_time));
405 avio_wl64(pb, asf->nb_packets); /* number of packets */
406 avio_wl64(pb, duration); /* end time stamp (in 100ns units) */
407 avio_wl64(pb, asf->duration); /* duration (in 100ns units) */
408 avio_wl64(pb, PREROLL_TIME); /* start time stamp */
409 avio_wl32(pb, (asf->is_streamed || !pb->seekable) ? 3 : 2); /* ??? */
410 avio_wl32(pb, s->packet_size); /* packet size */
411 avio_wl32(pb, s->packet_size); /* packet size */
412 avio_wl32(pb, bit_rate ? bit_rate : -1); /* Maximum data rate in bps */
413 end_header(pb, hpos);
414
415 /* unknown headers */
416 hpos = put_header(pb, &ff_asf_head1_guid);
417 ff_put_guid(pb, &ff_asf_head2_guid);
418 avio_wl16(pb, 6);
419 if (has_aspect_ratio) {
420 int64_t hpos2;
421 avio_wl32(pb, 26 + has_aspect_ratio * 84);
422 hpos2 = put_header(pb, &ff_asf_metadata_header);
423 avio_wl16(pb, 2 * has_aspect_ratio);
424 for (n = 0; n < s->nb_streams; n++) {
425 enc = s->streams[n]->codec;
426 if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
427 && enc->sample_aspect_ratio.num > 0
428 && enc->sample_aspect_ratio.den > 0) {
429 AVRational sar = enc->sample_aspect_ratio;
430 avio_wl16(pb, 0);
431 // the stream number is set like this below
432 avio_wl16(pb, n + 1);
433 avio_wl16(pb, 26); // name_len
434 avio_wl16(pb, 3); // value_type
435 avio_wl32(pb, 4); // value_len
436 avio_put_str16le(pb, "AspectRatioX");
437 avio_wl32(pb, sar.num);
438 avio_wl16(pb, 0);
439 // the stream number is set like this below
440 avio_wl16(pb, n + 1);
441 avio_wl16(pb, 26); // name_len
442 avio_wl16(pb, 3); // value_type
443 avio_wl32(pb, 4); // value_len
444 avio_put_str16le(pb, "AspectRatioY");
445 avio_wl32(pb, sar.den);
446 }
447 }
448 end_header(pb, hpos2);
449 } else {
450 avio_wl32(pb, 0);
451 }
452 end_header(pb, hpos);
453
454 /* title and other infos */
455 if (has_title) {
456 int len;
457 uint8_t *buf;
458 AVIOContext *dyn_buf;
459
460 if (avio_open_dyn_buf(&dyn_buf) < 0)
461 return AVERROR(ENOMEM);
462
463 hpos = put_header(pb, &ff_asf_comment_header);
464
465 for (n = 0; n < FF_ARRAY_ELEMS(tags); n++) {
466 len = tags[n] ? avio_put_str16le(dyn_buf, tags[n]->value) : 0;
467 avio_wl16(pb, len);
468 }
469 len = avio_close_dyn_buf(dyn_buf, &buf);
470 avio_write(pb, buf, len);
471 av_freep(&buf);
472 end_header(pb, hpos);
473 }
474 if (metadata_count) {
475 AVDictionaryEntry *tag = NULL;
476 hpos = put_header(pb, &ff_asf_extended_content_header);
477 avio_wl16(pb, metadata_count);
478 while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
479 put_str16(pb, tag->key);
480 avio_wl16(pb, 0);
481 put_str16(pb, tag->value);
482 }
483 end_header(pb, hpos);
484 }
485 /* chapters using ASF markers */
486 if (!asf->is_streamed && s->nb_chapters) {
487 int ret;
488 if (ret = asf_write_markers(s))
489 return ret;
490 }
491 /* stream headers */
492 for (n = 0; n < s->nb_streams; n++) {
493 int64_t es_pos;
494 // ASFStream *stream = &asf->streams[n];
495
496 enc = s->streams[n]->codec;
497 asf->streams[n].num = n + 1;
498 asf->streams[n].seq = 1;
499
500 switch (enc->codec_type) {
501 case AVMEDIA_TYPE_AUDIO:
502 wav_extra_size = 0;
503 extra_size = 18 + wav_extra_size;
504 extra_size2 = 8;
505 break;
506 default:
507 case AVMEDIA_TYPE_VIDEO:
508 wav_extra_size = enc->extradata_size;
509 extra_size = 0x33 + wav_extra_size;
510 extra_size2 = 0;
511 break;
512 }
513
514 hpos = put_header(pb, &ff_asf_stream_header);
515 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
516 ff_put_guid(pb, &ff_asf_audio_stream);
517 ff_put_guid(pb, &ff_asf_audio_conceal_spread);
518 } else {
519 ff_put_guid(pb, &ff_asf_video_stream);
520 ff_put_guid(pb, &ff_asf_video_conceal_none);
521 }
522 avio_wl64(pb, 0); /* ??? */
523 es_pos = avio_tell(pb);
524 avio_wl32(pb, extra_size); /* wav header len */
525 avio_wl32(pb, extra_size2); /* additional data len */
526 avio_wl16(pb, n + 1); /* stream number */
527 avio_wl32(pb, 0); /* ??? */
528
529 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
530 /* WAVEFORMATEX header */
531 int wavsize = ff_put_wav_header(pb, enc, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX);
532
533 if (wavsize < 0)
534 return -1;
535 if (wavsize != extra_size) {
536 cur_pos = avio_tell(pb);
537 avio_seek(pb, es_pos, SEEK_SET);
538 avio_wl32(pb, wavsize); /* wav header len */
539 avio_seek(pb, cur_pos, SEEK_SET);
540 }
541 /* ERROR Correction */
542 avio_w8(pb, 0x01);
543 if (enc->codec_id == AV_CODEC_ID_ADPCM_G726 || !enc->block_align) {
544 avio_wl16(pb, 0x0190);
545 avio_wl16(pb, 0x0190);
546 } else {
547 avio_wl16(pb, enc->block_align);
548 avio_wl16(pb, enc->block_align);
549 }
550 avio_wl16(pb, 0x01);
551 avio_w8(pb, 0x00);
552 } else {
553 avio_wl32(pb, enc->width);
554 avio_wl32(pb, enc->height);
555 avio_w8(pb, 2); /* ??? */
556 avio_wl16(pb, 40 + enc->extradata_size); /* size */
557
558 /* BITMAPINFOHEADER header */
559 ff_put_bmp_header(pb, enc, ff_codec_bmp_tags, 1, 0);
560 }
561 end_header(pb, hpos);
562 }
563
564 /* media comments */
565
566 hpos = put_header(pb, &ff_asf_codec_comment_header);
567 ff_put_guid(pb, &ff_asf_codec_comment1_header);
568 avio_wl32(pb, s->nb_streams);
569 for (n = 0; n < s->nb_streams; n++) {
570 const AVCodecDescriptor *codec_desc;
571 const char *desc;
572
573 enc = s->streams[n]->codec;
574 codec_desc = avcodec_descriptor_get(enc->codec_id);
575
576 if (enc->codec_type == AVMEDIA_TYPE_AUDIO)
577 avio_wl16(pb, 2);
578 else if (enc->codec_type == AVMEDIA_TYPE_VIDEO)
579 avio_wl16(pb, 1);
580 else
581 avio_wl16(pb, -1);
582
583 if (enc->codec_id == AV_CODEC_ID_WMAV2)
584 desc = "Windows Media Audio V8";
585 else
586 desc = codec_desc ? codec_desc->name : NULL;
587
588 if (desc) {
589 AVIOContext *dyn_buf;
590 uint8_t *buf;
591 int len;
592
593 if (avio_open_dyn_buf(&dyn_buf) < 0)
594 return AVERROR(ENOMEM);
595
596 avio_put_str16le(dyn_buf, desc);
597 len = avio_close_dyn_buf(dyn_buf, &buf);
598 avio_wl16(pb, len / 2); // "number of characters" = length in bytes / 2
599
600 avio_write(pb, buf, len);
601 av_freep(&buf);
602 } else
603 avio_wl16(pb, 0);
604
605 avio_wl16(pb, 0); /* no parameters */
606
607 /* id */
608 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
609 avio_wl16(pb, 2);
610 avio_wl16(pb, enc->codec_tag);
611 } else {
612 avio_wl16(pb, 4);
613 avio_wl32(pb, enc->codec_tag);
614 }
615 if (!enc->codec_tag)
616 return -1;
617 }
618 end_header(pb, hpos);
619
620 /* patch the header size fields */
621
622 cur_pos = avio_tell(pb);
623 header_size = cur_pos - header_offset;
624 if (asf->is_streamed) {
625 header_size += 8 + 30 + DATA_HEADER_SIZE;
626
627 avio_seek(pb, header_offset - 10 - 30, SEEK_SET);
628 avio_wl16(pb, header_size);
629 avio_seek(pb, header_offset - 2 - 30, SEEK_SET);
630 avio_wl16(pb, header_size);
631
632 header_size -= 8 + 30 + DATA_HEADER_SIZE;
633 }
634 header_size += 24 + 6;
635 avio_seek(pb, header_offset - 14, SEEK_SET);
636 avio_wl64(pb, header_size);
637 avio_seek(pb, cur_pos, SEEK_SET);
638
639 /* movie chunk, followed by packets of packet_size */
640 asf->data_offset = cur_pos;
641 ff_put_guid(pb, &ff_asf_data_header);
642 avio_wl64(pb, data_chunk_size);
643 ff_put_guid(pb, &ff_asf_my_guid);
644 avio_wl64(pb, asf->nb_packets); /* nb packets */
645 avio_w8(pb, 1); /* ??? */
646 avio_w8(pb, 1); /* ??? */
647 return 0;
648}
649
650static int asf_write_header(AVFormatContext *s)
651{
652 ASFContext *asf = s->priv_data;
653
654 s->packet_size = PACKET_SIZE;
655 s->max_interleave_delta = 0;
656 asf->nb_packets = 0;
657
658 asf->index_ptr = av_malloc(sizeof(ASFIndex) * ASF_INDEX_BLOCK);
659 asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
660 asf->maximum_packet = 0;
661
662 /* the data-chunk-size has to be 50 (DATA_HEADER_SIZE), which is
663 * data_size - asf->data_offset at the moment this function is done.
664 * It is needed to use asf as a streamable format. */
665 if (asf_write_header1(s, 0, DATA_HEADER_SIZE) < 0) {
666 //av_free(asf);
667 return -1;
668 }
669
670 avio_flush(s->pb);
671
672 asf->packet_nb_payloads = 0;
673 asf->packet_timestamp_start = -1;
674 asf->packet_timestamp_end = -1;
675 ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
676 NULL, NULL, NULL, NULL);
677
678 if (s->avoid_negative_ts < 0)
679 s->avoid_negative_ts = 1;
680
681 return 0;
682}
683
684static int asf_write_stream_header(AVFormatContext *s)
685{
686 ASFContext *asf = s->priv_data;
687
688 asf->is_streamed = 1;
689
690 return asf_write_header(s);
691}
692
693static int put_payload_parsing_info(AVFormatContext *s,
694 unsigned sendtime, unsigned duration,
695 int nb_payloads, int padsize)
696{
697 ASFContext *asf = s->priv_data;
698 AVIOContext *pb = s->pb;
699 int ppi_size, i;
700 int64_t start = avio_tell(pb);
701
702 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
703
704 padsize -= PACKET_HEADER_MIN_SIZE;
705 if (asf->multi_payloads_present)
706 padsize--;
707 av_assert0(padsize >= 0);
708
709 avio_w8(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
710 for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++)
711 avio_w8(pb, 0x0);
712
713 if (asf->multi_payloads_present)
714 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
715
716 if (padsize > 0) {
717 if (padsize < 256)
718 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
719 else
720 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
721 }
722 avio_w8(pb, iLengthTypeFlags);
723
724 avio_w8(pb, ASF_PPI_PROPERTY_FLAGS);
725
726 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
727 avio_wl16(pb, padsize - 2);
728 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
729 avio_w8(pb, padsize - 1);
730
731 avio_wl32(pb, sendtime);
732 avio_wl16(pb, duration);
733 if (asf->multi_payloads_present)
734 avio_w8(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
735
736 ppi_size = avio_tell(pb) - start;
737
738 return ppi_size;
739}
740
741static void flush_packet(AVFormatContext *s)
742{
743 ASFContext *asf = s->priv_data;
744 int packet_hdr_size, packet_filled_size;
745
746 av_assert0(asf->packet_timestamp_end >= asf->packet_timestamp_start);
747
748 if (asf->is_streamed)
749 put_chunk(s, 0x4424, s->packet_size, 0);
750
751 packet_hdr_size = put_payload_parsing_info(s,
752 asf->packet_timestamp_start,
753 asf->packet_timestamp_end - asf->packet_timestamp_start,
754 asf->packet_nb_payloads,
755 asf->packet_size_left);
756
757 packet_filled_size = PACKET_SIZE - asf->packet_size_left;
758 av_assert0(packet_hdr_size <= asf->packet_size_left);
759 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
760
761 avio_write(s->pb, asf->packet_buf, s->packet_size - packet_hdr_size);
762
763 avio_flush(s->pb);
764 asf->nb_packets++;
765 asf->packet_nb_payloads = 0;
766 asf->packet_timestamp_start = -1;
767 asf->packet_timestamp_end = -1;
768 ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
769 NULL, NULL, NULL, NULL);
770}
771
772static void put_payload_header(AVFormatContext *s, ASFStream *stream,
773 int64_t presentation_time, int m_obj_size,
774 int m_obj_offset, int payload_len, int flags)
775{
776 ASFContext *asf = s->priv_data;
777 AVIOContext *pb = &asf->pb;
778 int val;
779
780 val = stream->num;
781 if (flags & AV_PKT_FLAG_KEY)
782 val |= ASF_PL_FLAG_KEY_FRAME;
783 avio_w8(pb, val);
784
785 avio_w8(pb, stream->seq); // Media object number
786 avio_wl32(pb, m_obj_offset); // Offset Into Media Object
787
788 // Replicated Data shall be at least 8 bytes long.
789 // The first 4 bytes of data shall contain the
790 // Size of the Media Object that the payload belongs to.
791 // The next 4 bytes of data shall contain the
792 // Presentation Time for the media object that the payload belongs to.
793 avio_w8(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
794
795 avio_wl32(pb, m_obj_size); // Replicated Data - Media Object Size
796 avio_wl32(pb, (uint32_t) presentation_time); // Replicated Data - Presentation Time
797
798 if (asf->multi_payloads_present) {
799 avio_wl16(pb, payload_len); // payload length
800 }
801}
802
803static void put_frame(AVFormatContext *s, ASFStream *stream, AVStream *avst,
804 int64_t timestamp, const uint8_t *buf,
805 int m_obj_size, int flags)
806{
807 ASFContext *asf = s->priv_data;
808 int m_obj_offset, payload_len, frag_len1;
809
810 m_obj_offset = 0;
811 while (m_obj_offset < m_obj_size) {
812 payload_len = m_obj_size - m_obj_offset;
813 if (asf->packet_timestamp_start == -1) {
814 asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT);
815
816 asf->packet_size_left = PACKET_SIZE;
817 if (asf->multi_payloads_present) {
818 frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
819 } else {
820 frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
821 }
822 asf->packet_timestamp_start = timestamp;
823 } else {
824 // multi payloads
825 frag_len1 = asf->packet_size_left -
826 PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS -
827 PACKET_HEADER_MIN_SIZE - 1;
828
829 if (frag_len1 < payload_len &&
830 avst->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
831 flush_packet(s);
832 continue;
833 }
834 }
835 if (frag_len1 > 0) {
836 if (payload_len > frag_len1)
837 payload_len = frag_len1;
838 else if (payload_len == (frag_len1 - 1))
839 payload_len = frag_len1 - 2; // additional byte need to put padding length
840
841 put_payload_header(s, stream, timestamp + PREROLL_TIME,
842 m_obj_size, m_obj_offset, payload_len, flags);
843 avio_write(&asf->pb, buf, payload_len);
844
845 if (asf->multi_payloads_present)
846 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
847 else
848 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
849 asf->packet_timestamp_end = timestamp;
850
851 asf->packet_nb_payloads++;
852 } else {
853 payload_len = 0;
854 }
855 m_obj_offset += payload_len;
856 buf += payload_len;
857
858 if (!asf->multi_payloads_present)
859 flush_packet(s);
860 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1))
861 flush_packet(s);
862 else if (asf->packet_nb_payloads == ASF_PAYLOADS_PER_PACKET)
863 flush_packet(s);
864 }
865 stream->seq++;
866}
867
868static int update_index(AVFormatContext *s, int start_sec,
869 uint32_t packet_number, uint16_t packet_count,
870 uint64_t packet_offset)
871{
872 ASFContext *asf = s->priv_data;
873
874 if (start_sec > asf->next_start_sec) {
875 int i;
876
877 if (!asf->next_start_sec) {
878 asf->next_packet_number = packet_number;
879 asf->next_packet_count = packet_count;
880 asf->next_packet_offset = packet_offset;
881 }
882
883 if (start_sec > asf->nb_index_memory_alloc) {
884 int err;
885 asf->nb_index_memory_alloc = (start_sec + ASF_INDEX_BLOCK) & ~(ASF_INDEX_BLOCK - 1);
886 if ((err = av_reallocp_array(&asf->index_ptr,
887 asf->nb_index_memory_alloc,
888 sizeof(*asf->index_ptr))) < 0) {
889 asf->nb_index_memory_alloc = 0;
890 return err;
891 }
892 }
893 for (i = asf->next_start_sec; i < start_sec; i++) {
894 asf->index_ptr[i].packet_number = asf->next_packet_number;
895 asf->index_ptr[i].packet_count = asf->next_packet_count;
896 asf->index_ptr[i].send_time = asf->next_start_sec * INT64_C(10000000);
897 asf->index_ptr[i].offset = asf->next_packet_offset;
898
899 }
900 }
901 asf->maximum_packet = FFMAX(asf->maximum_packet, packet_count);
902 asf->next_packet_number = packet_number;
903 asf->next_packet_count = packet_count;
904 asf->next_packet_offset = packet_offset;
905 asf->next_start_sec = start_sec;
906
907 return 0;
908}
909
910static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
911{
912 ASFContext *asf = s->priv_data;
913 AVIOContext *pb = s->pb;
914 ASFStream *stream;
915 AVCodecContext *codec;
916 uint32_t packet_number;
917 int64_t pts;
918 int start_sec;
919 int flags = pkt->flags;
920 int ret;
921 uint64_t offset = avio_tell(pb);
922
923 codec = s->streams[pkt->stream_index]->codec;
924 stream = &asf->streams[pkt->stream_index];
925
926 if (codec->codec_type == AVMEDIA_TYPE_AUDIO)
927 flags &= ~AV_PKT_FLAG_KEY;
928
929 pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
930 av_assert0(pts != AV_NOPTS_VALUE);
931 pts *= 10000;
932 asf->duration = FFMAX(asf->duration, pts + pkt->duration * 10000);
933
934 packet_number = asf->nb_packets;
935 put_frame(s, stream, s->streams[pkt->stream_index],
936 pkt->dts, pkt->data, pkt->size, flags);
937
938 start_sec = (int)((PREROLL_TIME * 10000 + pts + ASF_INDEXED_INTERVAL - 1)
939 / ASF_INDEXED_INTERVAL);
940
941 /* check index */
942 if ((!asf->is_streamed) && (flags & AV_PKT_FLAG_KEY)) {
943 uint16_t packet_count = asf->nb_packets - packet_number;
944 ret = update_index(s, start_sec, packet_number, packet_count, offset);
945 if (ret < 0)
946 return ret;
947 }
948 asf->end_sec = start_sec;
949
950 return 0;
951}
952
f6fa7814 953static int asf_write_index(AVFormatContext *s, const ASFIndex *index,
2ba45a60
DM		 954 uint16_t max, uint32_t count)
955{
956 AVIOContext *pb = s->pb;
957 int i;
958
959 ff_put_guid(pb, &ff_asf_simple_index_header);
960 avio_wl64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2) * count);
961 ff_put_guid(pb, &ff_asf_my_guid);
962 avio_wl64(pb, ASF_INDEXED_INTERVAL);
963 avio_wl32(pb, max);
964 avio_wl32(pb, count);
965 for (i = 0; i < count; i++) {
966 avio_wl32(pb, index[i].packet_number);
967 avio_wl16(pb, index[i].packet_count);
968 }
969
970 return 0;
971}
972
973static int asf_write_trailer(AVFormatContext *s)
974{
975 ASFContext *asf = s->priv_data;
976 int64_t file_size, data_size;
977 int ret;
978
979 /* flush the current packet */
980 if (asf->pb.buf_ptr > asf->pb.buffer)
981 flush_packet(s);
982
983 /* write index */
984 data_size = avio_tell(s->pb);
985 if (!asf->is_streamed && asf->next_start_sec) {
986 if ((ret = update_index(s, asf->end_sec + 1, 0, 0, 0)) < 0)
987 return ret;
988 asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->next_start_sec);
989 }
990 avio_flush(s->pb);
991
992 if (asf->is_streamed || !s->pb->seekable) {
993 put_chunk(s, 0x4524, 0, 0); /* end of stream */
994 } else {
995 /* rewrite an updated header */
996 file_size = avio_tell(s->pb);
997 avio_seek(s->pb, 0, SEEK_SET);
998 asf_write_header1(s, file_size, data_size - asf->data_offset);
999 }
1000
1001 av_freep(&asf->index_ptr);
1002 return 0;
1003}
1004
1005#if CONFIG_ASF_MUXER
1006AVOutputFormat ff_asf_muxer = {
1007 .name = "asf",
1008 .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
1009 .mime_type = "video/x-ms-asf",
1010 .extensions = "asf,wmv,wma",
1011 .priv_data_size = sizeof(ASFContext),
1012 .audio_codec = AV_CODEC_ID_WMAV2,
1013 .video_codec = AV_CODEC_ID_MSMPEG4V3,
1014 .write_header = asf_write_header,
1015 .write_packet = asf_write_packet,
1016 .write_trailer = asf_write_trailer,
1017 .flags = AVFMT_GLOBALHEADER,
1018 .codec_tag = (const AVCodecTag * const []) {
1019 codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0
1020 },
1021};
1022#endif /* CONFIG_ASF_MUXER */
1023
1024#if CONFIG_ASF_STREAM_MUXER
1025AVOutputFormat ff_asf_stream_muxer = {
1026 .name = "asf_stream",
1027 .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
1028 .mime_type = "video/x-ms-asf",
1029 .extensions = "asf,wmv,wma",
1030 .priv_data_size = sizeof(ASFContext),
1031 .audio_codec = AV_CODEC_ID_WMAV2,
1032 .video_codec = AV_CODEC_ID_MSMPEG4V3,
1033 .write_header = asf_write_stream_header,
1034 .write_packet = asf_write_packet,
1035 .write_trailer = asf_write_trailer,
1036 .flags = AVFMT_GLOBALHEADER,
1037 .codec_tag = (const AVCodecTag * const []) {
1038 codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0
1039 },
1040};
1041#endif /* CONFIG_ASF_STREAM_MUXER */
ffmpeg Piment Noir Debian package repository