?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge remote-tracking branch 'libav/master'
[FFMpeg-mirror/mplayer-patches.git] / libavformat / asfenc.c
bloba523b3a0515ca161928ef2a0fa9fbe44ada5a7d0
1 /*
2 * ASF muxer
3 * Copyright (c) 2000, 2001 Fabrice Bellard
4 *
5 * This file is part of Libav.
6 *
7 * Libav 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 * Libav 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 Libav; 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/dict.h"
23 #include "avformat.h"
24 #include "avio_internal.h"
25 #include "internal.h"
26 #include "riff.h"
27 #include "asf.h"
28
29 #undef NDEBUG
30 #include <assert.h>
31
32
33 #define ASF_INDEXED_INTERVAL 10000000
34 #define ASF_INDEX_BLOCK 600
35
36 #define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
37 #define ASF_PACKET_ERROR_CORRECTION_FLAGS \
38 (ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
39 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE)
40
41 #if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0)
42 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1
43 #else
44 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0
45 #endif
46
47 #define ASF_PPI_PROPERTY_FLAGS \
48 (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \
49 ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \
50 ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \
51 ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE)
52
53 #define ASF_PPI_LENGTH_TYPE_FLAGS 0
54
55 #define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD
56
57 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
58 # define ASF_PPI_SEQUENCE_FIELD_SIZE 1
59 #endif
60 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
61 # define ASF_PPI_SEQUENCE_FIELD_SIZE 2
62 #endif
63 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
64 # define ASF_PPI_SEQUENCE_FIELD_SIZE 4
65 #endif
66 #ifndef ASF_PPI_SEQUENCE_FIELD_SIZE
67 # define ASF_PPI_SEQUENCE_FIELD_SIZE 0
68 #endif
69
70 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
71 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 1
72 #endif
73 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
74 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 2
75 #endif
76 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
77 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 4
78 #endif
79 #ifndef ASF_PPI_PACKET_LENGTH_FIELD_SIZE
80 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 0
81 #endif
82
83 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
84 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 1
85 #endif
86 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
87 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 2
88 #endif
89 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
90 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 4
91 #endif
92 #ifndef ASF_PPI_PADDING_LENGTH_FIELD_SIZE
93 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 0
94 #endif
95
96 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
97 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 1
98 #endif
99 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
100 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 2
101 #endif
102 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
103 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 4
104 #endif
105 #ifndef ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE
106 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 0
107 #endif
108
109 #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))
110 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 1
111 #endif
112 #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))
113 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 2
114 #endif
115 #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))
116 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 4
117 #endif
118 #ifndef ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE
119 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 0
120 #endif
121
122 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
123 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 1
124 #endif
125 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
126 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 2
127 #endif
128 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
129 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 4
130 #endif
131 #ifndef ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE
132 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 0
133 #endif
134
135 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
136 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 1
137 #endif
138 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
139 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 2
140 #endif
141 #ifndef ASF_PAYLOAD_LENGTH_FIELD_SIZE
142 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 0
143 #endif
144
145 #define PACKET_HEADER_MIN_SIZE \
146 (ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE + \
147 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE + \
148 1 + /* Length Type Flags */ \
149 1 + /* Property Flags */ \
150 ASF_PPI_PACKET_LENGTH_FIELD_SIZE + \
151 ASF_PPI_SEQUENCE_FIELD_SIZE + \
152 ASF_PPI_PADDING_LENGTH_FIELD_SIZE + \
153 4 + /* Send Time Field */ \
154 2) /* Duration Field */
155
156 // Replicated Data shall be at least 8 bytes long.
157 #define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08
158
159 #define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \
160 (1 + /* Stream Number */ \
161 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
162 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
163 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
164 ASF_PAYLOAD_REPLICATED_DATA_LENGTH)
165
166 #define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \
167 (1 + /* Stream Number */ \
168 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
169 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
170 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
171 ASF_PAYLOAD_REPLICATED_DATA_LENGTH + \
172 ASF_PAYLOAD_LENGTH_FIELD_SIZE)
173
174 #define SINGLE_PAYLOAD_DATA_LENGTH \
175 (PACKET_SIZE - \
176 PACKET_HEADER_MIN_SIZE - \
177 PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD)
178
179 #define MULTI_PAYLOAD_CONSTANT \
180 (PACKET_SIZE - \
181 PACKET_HEADER_MIN_SIZE - \
182 1 - /* Payload Flags */ \
183 2 * PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS)
184
185 typedef struct {
186 uint32_t seqno;
187 int is_streamed;
188 ASFStream streams[128]; ///< it's max number and it's not that big
189 /* non streamed additonnal info */
190 uint64_t nb_packets; ///< how many packets are there in the file, invalid if broadcasting
191 int64_t duration; ///< in 100ns units
192 /* packet filling */
193 unsigned char multi_payloads_present;
194 int packet_size_left;
195 int packet_timestamp_start;
196 int packet_timestamp_end;
197 unsigned int packet_nb_payloads;
198 uint8_t packet_buf[PACKET_SIZE];
199 AVIOContext pb;
200 /* only for reading */
201 uint64_t data_offset; ///< beginning of the first data packet
202
203 int64_t last_indexed_pts;
204 ASFIndex *index_ptr;
205 uint32_t nb_index_count;
206 uint32_t nb_index_memory_alloc;
207 uint16_t maximum_packet;
208 } ASFContext;
209
210 static const AVCodecTag codec_asf_bmp_tags[] = {
211 { AV_CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
212 { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
213 { AV_CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
214 { AV_CODEC_ID_NONE, 0 },
215 };
216
217 #define PREROLL_TIME 3100
218
219 static void put_guid(AVIOContext *s, const ff_asf_guid *g)
220 {
221 assert(sizeof(*g) == 16);
222 avio_write(s, *g, sizeof(*g));
223 }
224
225 static void put_str16(AVIOContext *s, const char *tag)
226 {
227 int len;
228 uint8_t *pb;
229 AVIOContext *dyn_buf;
230 if (avio_open_dyn_buf(&dyn_buf) < 0)
231 return;
232
233 avio_put_str16le(dyn_buf, tag);
234 len = avio_close_dyn_buf(dyn_buf, &pb);
235 avio_wl16(s, len);
236 avio_write(s, pb, len);
237 av_freep(&pb);
238 }
239
240 static int64_t put_header(AVIOContext *pb, const ff_asf_guid *g)
241 {
242 int64_t pos;
243
244 pos = avio_tell(pb);
245 put_guid(pb, g);
246 avio_wl64(pb, 24);
247 return pos;
248 }
249
250 /* update header size */
251 static void end_header(AVIOContext *pb, int64_t pos)
252 {
253 int64_t pos1;
254
255 pos1 = avio_tell(pb);
256 avio_seek(pb, pos + 16, SEEK_SET);
257 avio_wl64(pb, pos1 - pos);
258 avio_seek(pb, pos1, SEEK_SET);
259 }
260
261 /* write an asf chunk (only used in streaming case) */
262 static void put_chunk(AVFormatContext *s, int type,
263 int payload_length, int flags)
264 {
265 ASFContext *asf = s->priv_data;
266 AVIOContext *pb = s->pb;
267 int length;
268
269 length = payload_length + 8;
270 avio_wl16(pb, type);
271 avio_wl16(pb, length); // size
272 avio_wl32(pb, asf->seqno); // sequence number
273 avio_wl16(pb, flags); // unknown bytes
274 avio_wl16(pb, length); // size_confirm
275 asf->seqno++;
276 }
277
278 /* convert from unix to windows time */
279 static int64_t unix_to_file_time(int ti)
280 {
281 int64_t t;
282
283 t = ti * INT64_C(10000000);
284 t += INT64_C(116444736000000000);
285 return t;
286 }
287
288 /* write the header (used two times if non streamed) */
289 static int asf_write_header1(AVFormatContext *s, int64_t file_size,
290 int64_t data_chunk_size)
291 {
292 ASFContext *asf = s->priv_data;
293 AVIOContext *pb = s->pb;
294 AVDictionaryEntry *tags[5];
295 int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
296 int has_title;
297 int metadata_count;
298 AVCodecContext *enc;
299 int64_t header_offset, cur_pos, hpos;
300 int bit_rate;
301 int64_t duration;
302
303 ff_metadata_conv(&s->metadata, ff_asf_metadata_conv, NULL);
304
305 tags[0] = av_dict_get(s->metadata, "title", NULL, 0);
306 tags[1] = av_dict_get(s->metadata, "author", NULL, 0);
307 tags[2] = av_dict_get(s->metadata, "copyright", NULL, 0);
308 tags[3] = av_dict_get(s->metadata, "comment", NULL, 0);
309 tags[4] = av_dict_get(s->metadata, "rating", NULL, 0);
310
311 duration = asf->duration + PREROLL_TIME * 10000;
312 has_title = tags[0] || tags[1] || tags[2] || tags[3] || tags[4];
313 metadata_count = av_dict_count(s->metadata);
314
315 bit_rate = 0;
316 for (n = 0; n < s->nb_streams; n++) {
317 enc = s->streams[n]->codec;
318
319 avpriv_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
320
321 bit_rate += enc->bit_rate;
322 }
323
324 if (asf->is_streamed) {
325 put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
326 }
327
328 put_guid(pb, &ff_asf_header);
329 avio_wl64(pb, -1); /* header length, will be patched after */
330 avio_wl32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */
331 avio_w8(pb, 1); /* ??? */
332 avio_w8(pb, 2); /* ??? */
333
334 /* file header */
335 header_offset = avio_tell(pb);
336 hpos = put_header(pb, &ff_asf_file_header);
337 put_guid(pb, &ff_asf_my_guid);
338 avio_wl64(pb, file_size);
339 file_time = 0;
340 avio_wl64(pb, unix_to_file_time(file_time));
341 avio_wl64(pb, asf->nb_packets); /* number of packets */
342 avio_wl64(pb, duration); /* end time stamp (in 100ns units) */
343 avio_wl64(pb, asf->duration); /* duration (in 100ns units) */
344 avio_wl64(pb, PREROLL_TIME); /* start time stamp */
345 avio_wl32(pb, (asf->is_streamed || !pb->seekable) ? 3 : 2); /* ??? */
346 avio_wl32(pb, s->packet_size); /* packet size */
347 avio_wl32(pb, s->packet_size); /* packet size */
348 avio_wl32(pb, bit_rate); /* Nominal data rate in bps */
349 end_header(pb, hpos);
350
351 /* unknown headers */
352 hpos = put_header(pb, &ff_asf_head1_guid);
353 put_guid(pb, &ff_asf_head2_guid);
354 avio_wl32(pb, 6);
355 avio_wl16(pb, 0);
356 end_header(pb, hpos);
357
358 /* title and other infos */
359 if (has_title) {
360 int len;
361 uint8_t *buf;
362 AVIOContext *dyn_buf;
363
364 if (avio_open_dyn_buf(&dyn_buf) < 0)
365 return AVERROR(ENOMEM);
366
367 hpos = put_header(pb, &ff_asf_comment_header);
368
369 for (n = 0; n < FF_ARRAY_ELEMS(tags); n++) {
370 len = tags[n] ? avio_put_str16le(dyn_buf, tags[n]->value) : 0;
371 avio_wl16(pb, len);
372 }
373 len = avio_close_dyn_buf(dyn_buf, &buf);
374 avio_write(pb, buf, len);
375 av_freep(&buf);
376 end_header(pb, hpos);
377 }
378 if (metadata_count) {
379 AVDictionaryEntry *tag = NULL;
380 hpos = put_header(pb, &ff_asf_extended_content_header);
381 avio_wl16(pb, metadata_count);
382 while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
383 put_str16(pb, tag->key);
384 avio_wl16(pb, 0);
385 put_str16(pb, tag->value);
386 }
387 end_header(pb, hpos);
388 }
389
390 /* stream headers */
391 for (n = 0; n < s->nb_streams; n++) {
392 int64_t es_pos;
393 // ASFStream *stream = &asf->streams[n];
394
395 enc = s->streams[n]->codec;
396 asf->streams[n].num = n + 1;
397 asf->streams[n].seq = 0;
398
399 switch (enc->codec_type) {
400 case AVMEDIA_TYPE_AUDIO:
401 wav_extra_size = 0;
402 extra_size = 18 + wav_extra_size;
403 extra_size2 = 8;
404 break;
405 default:
406 case AVMEDIA_TYPE_VIDEO:
407 wav_extra_size = enc->extradata_size;
408 extra_size = 0x33 + wav_extra_size;
409 extra_size2 = 0;
410 break;
411 }
412
413 hpos = put_header(pb, &ff_asf_stream_header);
414 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
415 put_guid(pb, &ff_asf_audio_stream);
416 put_guid(pb, &ff_asf_audio_conceal_spread);
417 } else {
418 put_guid(pb, &ff_asf_video_stream);
419 put_guid(pb, &ff_asf_video_conceal_none);
420 }
421 avio_wl64(pb, 0); /* ??? */
422 es_pos = avio_tell(pb);
423 avio_wl32(pb, extra_size); /* wav header len */
424 avio_wl32(pb, extra_size2); /* additional data len */
425 avio_wl16(pb, n + 1); /* stream number */
426 avio_wl32(pb, 0); /* ??? */
427
428 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
429 /* WAVEFORMATEX header */
430 int wavsize = ff_put_wav_header(pb, enc);
431
432 if (wavsize < 0)
433 return -1;
434 if (wavsize != extra_size) {
435 cur_pos = avio_tell(pb);
436 avio_seek(pb, es_pos, SEEK_SET);
437 avio_wl32(pb, wavsize); /* wav header len */
438 avio_seek(pb, cur_pos, SEEK_SET);
439 }
440 /* ERROR Correction */
441 avio_w8(pb, 0x01);
442 if (enc->codec_id == AV_CODEC_ID_ADPCM_G726 || !enc->block_align) {
443 avio_wl16(pb, 0x0190);
444 avio_wl16(pb, 0x0190);
445 } else {
446 avio_wl16(pb, enc->block_align);
447 avio_wl16(pb, enc->block_align);
448 }
449 avio_wl16(pb, 0x01);
450 avio_w8(pb, 0x00);
451 } else {
452 avio_wl32(pb, enc->width);
453 avio_wl32(pb, enc->height);
454 avio_w8(pb, 2); /* ??? */
455 avio_wl16(pb, 40 + enc->extradata_size); /* size */
456
457 /* BITMAPINFOHEADER header */
458 ff_put_bmp_header(pb, enc, ff_codec_bmp_tags, 1);
459 }
460 end_header(pb, hpos);
461 }
462
463 /* media comments */
464
465 hpos = put_header(pb, &ff_asf_codec_comment_header);
466 put_guid(pb, &ff_asf_codec_comment1_header);
467 avio_wl32(pb, s->nb_streams);
468 for (n = 0; n < s->nb_streams; n++) {
469 AVCodec *p;
470 const char *desc;
471 int len;
472 uint8_t *buf;
473 AVIOContext *dyn_buf;
474
475 enc = s->streams[n]->codec;
476 p = avcodec_find_encoder(enc->codec_id);
477
478 if (enc->codec_type == AVMEDIA_TYPE_AUDIO)
479 avio_wl16(pb, 2);
480 else if (enc->codec_type == AVMEDIA_TYPE_VIDEO)
481 avio_wl16(pb, 1);
482 else
483 avio_wl16(pb, -1);
484
485 if (enc->codec_id == AV_CODEC_ID_WMAV2)
486 desc = "Windows Media Audio V8";
487 else
488 desc = p ? p->name : enc->codec_name;
489
490 if (avio_open_dyn_buf(&dyn_buf) < 0)
491 return AVERROR(ENOMEM);
492
493 avio_put_str16le(dyn_buf, desc);
494 len = avio_close_dyn_buf(dyn_buf, &buf);
495 avio_wl16(pb, len / 2); // "number of characters" = length in bytes / 2
496
497 avio_write(pb, buf, len);
498 av_freep(&buf);
499
500 avio_wl16(pb, 0); /* no parameters */
501
502 /* id */
503 if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
504 avio_wl16(pb, 2);
505 avio_wl16(pb, enc->codec_tag);
506 } else {
507 avio_wl16(pb, 4);
508 avio_wl32(pb, enc->codec_tag);
509 }
510 if (!enc->codec_tag)
511 return -1;
512 }
513 end_header(pb, hpos);
514
515 /* patch the header size fields */
516
517 cur_pos = avio_tell(pb);
518 header_size = cur_pos - header_offset;
519 if (asf->is_streamed) {
520 header_size += 8 + 30 + 50;
521
522 avio_seek(pb, header_offset - 10 - 30, SEEK_SET);
523 avio_wl16(pb, header_size);
524 avio_seek(pb, header_offset - 2 - 30, SEEK_SET);
525 avio_wl16(pb, header_size);
526
527 header_size -= 8 + 30 + 50;
528 }
529 header_size += 24 + 6;
530 avio_seek(pb, header_offset - 14, SEEK_SET);
531 avio_wl64(pb, header_size);
532 avio_seek(pb, cur_pos, SEEK_SET);
533
534 /* movie chunk, followed by packets of packet_size */
535 asf->data_offset = cur_pos;
536 put_guid(pb, &ff_asf_data_header);
537 avio_wl64(pb, data_chunk_size);
538 put_guid(pb, &ff_asf_my_guid);
539 avio_wl64(pb, asf->nb_packets); /* nb packets */
540 avio_w8(pb, 1); /* ??? */
541 avio_w8(pb, 1); /* ??? */
542 return 0;
543 }
544
545 static int asf_write_header(AVFormatContext *s)
546 {
547 ASFContext *asf = s->priv_data;
548
549 s->packet_size = PACKET_SIZE;
550 asf->nb_packets = 0;
551
552 asf->last_indexed_pts = 0;
553 asf->index_ptr = av_malloc(sizeof(ASFIndex) * ASF_INDEX_BLOCK);
554 asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
555 asf->nb_index_count = 0;
556 asf->maximum_packet = 0;
557
558 /* the data-chunk-size has to be 50, which is data_size - asf->data_offset
559 * at the moment this function is done. It is needed to use asf as
560 * streamable format. */
561 if (asf_write_header1(s, 0, 50) < 0) {
562 //av_free(asf);
563 return -1;
564 }
565
566 avio_flush(s->pb);
567
568 asf->packet_nb_payloads = 0;
569 asf->packet_timestamp_start = -1;
570 asf->packet_timestamp_end = -1;
571 ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
572 NULL, NULL, NULL, NULL);
573
574 return 0;
575 }
576
577 static int asf_write_stream_header(AVFormatContext *s)
578 {
579 ASFContext *asf = s->priv_data;
580
581 asf->is_streamed = 1;
582
583 return asf_write_header(s);
584 }
585
586 static int put_payload_parsing_info(AVFormatContext *s,
587 unsigned sendtime, unsigned duration,
588 int nb_payloads, int padsize)
589 {
590 ASFContext *asf = s->priv_data;
591 AVIOContext *pb = s->pb;
592 int ppi_size, i;
593 int64_t start = avio_tell(pb);
594
595 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
596
597 padsize -= PACKET_HEADER_MIN_SIZE;
598 if (asf->multi_payloads_present)
599 padsize--;
600 assert(padsize >= 0);
601
602 avio_w8(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
603 for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++)
604 avio_w8(pb, 0x0);
605
606 if (asf->multi_payloads_present)
607 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
608
609 if (padsize > 0) {
610 if (padsize < 256)
611 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
612 else
613 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
614 }
615 avio_w8(pb, iLengthTypeFlags);
616
617 avio_w8(pb, ASF_PPI_PROPERTY_FLAGS);
618
619 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
620 avio_wl16(pb, padsize - 2);
621 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
622 avio_w8(pb, padsize - 1);
623
624 avio_wl32(pb, sendtime);
625 avio_wl16(pb, duration);
626 if (asf->multi_payloads_present)
627 avio_w8(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
628
629 ppi_size = avio_tell(pb) - start;
630
631 return ppi_size;
632 }
633
634 static void flush_packet(AVFormatContext *s)
635 {
636 ASFContext *asf = s->priv_data;
637 int packet_hdr_size, packet_filled_size;
638
639 assert(asf->packet_timestamp_end >= asf->packet_timestamp_start);
640
641 if (asf->is_streamed)
642 put_chunk(s, 0x4424, s->packet_size, 0);
643
644 packet_hdr_size = put_payload_parsing_info(s,
645 asf->packet_timestamp_start,
646 asf->packet_timestamp_end -
647 asf->packet_timestamp_start,
648 asf->packet_nb_payloads,
649 asf->packet_size_left);
650
651 packet_filled_size = PACKET_SIZE - asf->packet_size_left;
652 assert(packet_hdr_size <= asf->packet_size_left);
653 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
654
655 avio_write(s->pb, asf->packet_buf, s->packet_size - packet_hdr_size);
656
657 avio_flush(s->pb);
658 asf->nb_packets++;
659 asf->packet_nb_payloads = 0;
660 asf->packet_timestamp_start = -1;
661 asf->packet_timestamp_end = -1;
662 ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1,
663 NULL, NULL, NULL, NULL);
664 }
665
666 static void put_payload_header(AVFormatContext *s, ASFStream *stream,
667 int presentation_time, int m_obj_size,
668 int m_obj_offset, int payload_len, int flags)
669 {
670 ASFContext *asf = s->priv_data;
671 AVIOContext *pb = &asf->pb;
672 int val;
673
674 val = stream->num;
675 if (flags & AV_PKT_FLAG_KEY)
676 val |= ASF_PL_FLAG_KEY_FRAME;
677 avio_w8(pb, val);
678
679 avio_w8(pb, stream->seq); // Media object number
680 avio_wl32(pb, m_obj_offset); // Offset Into Media Object
681
682 // Replicated Data shall be at least 8 bytes long.
683 // The first 4 bytes of data shall contain the
684 // Size of the Media Object that the payload belongs to.
685 // The next 4 bytes of data shall contain the
686 // Presentation Time for the media object that the payload belongs to.
687 avio_w8(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
688
689 avio_wl32(pb, m_obj_size); // Replicated Data - Media Object Size
690 avio_wl32(pb, presentation_time); // Replicated Data - Presentation Time
691
692 if (asf->multi_payloads_present) {
693 avio_wl16(pb, payload_len); // payload length
694 }
695 }
696
697 static void put_frame(AVFormatContext *s, ASFStream *stream, AVStream *avst,
698 int timestamp, const uint8_t *buf,
699 int m_obj_size, int flags)
700 {
701 ASFContext *asf = s->priv_data;
702 int m_obj_offset, payload_len, frag_len1;
703
704 m_obj_offset = 0;
705 while (m_obj_offset < m_obj_size) {
706 payload_len = m_obj_size - m_obj_offset;
707 if (asf->packet_timestamp_start == -1) {
708 asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT);
709
710 asf->packet_size_left = PACKET_SIZE;
711 if (asf->multi_payloads_present) {
712 frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
713 } else {
714 frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
715 }
716 asf->packet_timestamp_start = timestamp;
717 } else {
718 // multi payloads
719 frag_len1 = asf->packet_size_left -
720 PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS -
721 PACKET_HEADER_MIN_SIZE - 1;
722
723 if (frag_len1 < payload_len &&
724 avst->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
725 flush_packet(s);
726 continue;
727 }
728 }
729 if (frag_len1 > 0) {
730 if (payload_len > frag_len1)
731 payload_len = frag_len1;
732 else if (payload_len == (frag_len1 - 1))
733 payload_len = frag_len1 - 2; // additional byte need to put padding length
734
735 put_payload_header(s, stream, timestamp + PREROLL_TIME,
736 m_obj_size, m_obj_offset, payload_len, flags);
737 avio_write(&asf->pb, buf, payload_len);
738
739 if (asf->multi_payloads_present)
740 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
741 else
742 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
743 asf->packet_timestamp_end = timestamp;
744
745 asf->packet_nb_payloads++;
746 } else {
747 payload_len = 0;
748 }
749 m_obj_offset += payload_len;
750 buf += payload_len;
751
752 if (!asf->multi_payloads_present)
753 flush_packet(s);
754 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1))
755 flush_packet(s);
756 }
757 stream->seq++;
758 }
759
760 static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
761 {
762 ASFContext *asf = s->priv_data;
763 ASFStream *stream;
764 int64_t duration;
765 AVCodecContext *codec;
766 int64_t packet_st, pts;
767 int start_sec, i;
768 int flags = pkt->flags;
769
770 codec = s->streams[pkt->stream_index]->codec;
771 stream = &asf->streams[pkt->stream_index];
772
773 if (codec->codec_type == AVMEDIA_TYPE_AUDIO)
774 flags &= ~AV_PKT_FLAG_KEY;
775
776 pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
777 assert(pts != AV_NOPTS_VALUE);
778 duration = pts * 10000;
779 asf->duration = FFMAX(asf->duration, duration + pkt->duration * 10000);
780
781 packet_st = asf->nb_packets;
782 put_frame(s, stream, s->streams[pkt->stream_index],
783 pkt->dts, pkt->data, pkt->size, flags);
784
785 /* check index */
786 if ((!asf->is_streamed) && (flags & AV_PKT_FLAG_KEY)) {
787 start_sec = (int)(duration / INT64_C(10000000));
788 if (start_sec != (int)(asf->last_indexed_pts / INT64_C(10000000))) {
789 for (i = asf->nb_index_count; i < start_sec; i++) {
790 if (i >= asf->nb_index_memory_alloc) {
791 asf->nb_index_memory_alloc += ASF_INDEX_BLOCK;
792 asf->index_ptr = (ASFIndex *)av_realloc(asf->index_ptr,
793 sizeof(ASFIndex) *
794 asf->nb_index_memory_alloc);
795 }
796 // store
797 asf->index_ptr[i].packet_number = (uint32_t)packet_st;
798 asf->index_ptr[i].packet_count = (uint16_t)(asf->nb_packets - packet_st);
799 asf->maximum_packet = FFMAX(asf->maximum_packet,
800 (uint16_t)(asf->nb_packets - packet_st));
801 }
802 asf->nb_index_count = start_sec;
803 asf->last_indexed_pts = duration;
804 }
805 }
806 return 0;
807 }
808
809 static int asf_write_index(AVFormatContext *s, ASFIndex *index,
810 uint16_t max, uint32_t count)
811 {
812 AVIOContext *pb = s->pb;
813 int i;
814
815 put_guid(pb, &ff_asf_simple_index_header);
816 avio_wl64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2) * count);
817 put_guid(pb, &ff_asf_my_guid);
818 avio_wl64(pb, ASF_INDEXED_INTERVAL);
819 avio_wl32(pb, max);
820 avio_wl32(pb, count);
821 for (i = 0; i < count; i++) {
822 avio_wl32(pb, index[i].packet_number);
823 avio_wl16(pb, index[i].packet_count);
824 }
825
826 return 0;
827 }
828
829 static int asf_write_trailer(AVFormatContext *s)
830 {
831 ASFContext *asf = s->priv_data;
832 int64_t file_size, data_size;
833
834 /* flush the current packet */
835 if (asf->pb.buf_ptr > asf->pb.buffer)
836 flush_packet(s);
837
838 /* write index */
839 data_size = avio_tell(s->pb);
840 if ((!asf->is_streamed) && (asf->nb_index_count != 0))
841 asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
842 avio_flush(s->pb);
843
844 if (asf->is_streamed || !s->pb->seekable) {
845 put_chunk(s, 0x4524, 0, 0); /* end of stream */
846 } else {
847 /* rewrite an updated header */
848 file_size = avio_tell(s->pb);
849 avio_seek(s->pb, 0, SEEK_SET);
850 asf_write_header1(s, file_size, data_size - asf->data_offset);
851 }
852
853 av_free(asf->index_ptr);
854 return 0;
855 }
856
857 #if CONFIG_ASF_MUXER
858 AVOutputFormat ff_asf_muxer = {
859 .name = "asf",
860 .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
861 .mime_type = "video/x-ms-asf",
862 .extensions = "asf,wmv,wma",
863 .priv_data_size = sizeof(ASFContext),
864 .audio_codec = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_MP2,
865 .video_codec = AV_CODEC_ID_MSMPEG4V3,
866 .write_header = asf_write_header,
867 .write_packet = asf_write_packet,
868 .write_trailer = asf_write_trailer,
869 .flags = AVFMT_GLOBALHEADER,
870 .codec_tag = (const AVCodecTag * const []) {
871 codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0
872 },
873 };
874 #endif /* CONFIG_ASF_MUXER */
875
876 #if CONFIG_ASF_STREAM_MUXER
877 AVOutputFormat ff_asf_stream_muxer = {
878 .name = "asf_stream",
879 .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"),
880 .mime_type = "video/x-ms-asf",
881 .extensions = "asf,wmv,wma",
882 .priv_data_size = sizeof(ASFContext),
883 .audio_codec = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_MP2,
884 .video_codec = AV_CODEC_ID_MSMPEG4V3,
885 .write_header = asf_write_stream_header,
886 .write_packet = asf_write_packet,
887 .write_trailer = asf_write_trailer,
888 .flags = AVFMT_GLOBALHEADER,
889 .codec_tag = (const AVCodecTag * const []) {
890 codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0
891 },
892 };
893 #endif /* CONFIG_ASF_STREAM_MUXER */
A couple of patches to make building with MPlayer easier