move common stuff from avienc.c and wav.c to new file riff.c
[libav.git] / libavformat / asf-enc.c
1 /*
2 * Adaptive stream format encoder
3 * Copyright (c) 2000, 2001 Fabrice Bellard.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19 #include "avformat.h"
20 #include "riff.h"
21 #include "asf.h"
22
23 #undef NDEBUG
24 #include <assert.h>
25
26
27 #define ASF_INDEXED_INTERVAL 10000000
28 #define ASF_INDEX_BLOCK 600
29
30 #define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
31 #define ASF_PACKET_ERROR_CORRECTION_FLAGS (\
32 ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
33 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE\
34 )
35
36 #if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0)
37 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1
38 #else
39 # define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0
40 #endif
41
42 #define ASF_PPI_PROPERTY_FLAGS (\
43 ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \
44 ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \
45 ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \
46 ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE \
47 )
48
49 #define ASF_PPI_LENGTH_TYPE_FLAGS 0
50
51 #define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD
52
53 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
54 # define ASF_PPI_SEQUENCE_FIELD_SIZE 1
55 #endif
56 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
57 # define ASF_PPI_SEQUENCE_FIELD_SIZE 2
58 #endif
59 #if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
60 # define ASF_PPI_SEQUENCE_FIELD_SIZE 4
61 #endif
62 #ifndef ASF_PPI_SEQUENCE_FIELD_SIZE
63 # define ASF_PPI_SEQUENCE_FIELD_SIZE 0
64 #endif
65
66
67 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
68 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 1
69 #endif
70 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
71 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 2
72 #endif
73 #if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
74 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 4
75 #endif
76 #ifndef ASF_PPI_PACKET_LENGTH_FIELD_SIZE
77 # define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 0
78 #endif
79
80 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
81 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 1
82 #endif
83 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
84 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 2
85 #endif
86 #if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
87 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 4
88 #endif
89 #ifndef ASF_PPI_PADDING_LENGTH_FIELD_SIZE
90 # define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 0
91 #endif
92
93 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
94 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 1
95 #endif
96 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
97 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 2
98 #endif
99 #if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
100 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 4
101 #endif
102 #ifndef ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE
103 # define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 0
104 #endif
105
106 #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))
107 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 1
108 #endif
109 #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))
110 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 2
111 #endif
112 #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))
113 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 4
114 #endif
115 #ifndef ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE
116 # define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 0
117 #endif
118
119 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
120 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 1
121 #endif
122 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
123 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 2
124 #endif
125 #if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
126 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 4
127 #endif
128 #ifndef ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE
129 # define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 0
130 #endif
131
132 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
133 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 1
134 #endif
135 #if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
136 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 2
137 #endif
138 #ifndef ASF_PAYLOAD_LENGTH_FIELD_SIZE
139 # define ASF_PAYLOAD_LENGTH_FIELD_SIZE 0
140 #endif
141
142 #define PACKET_HEADER_MIN_SIZE (\
143 ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE + \
144 ASF_PACKET_ERROR_CORRECTION_DATA_SIZE + \
145 1 + /*Length Type Flags*/ \
146 1 + /*Property Flags*/ \
147 ASF_PPI_PACKET_LENGTH_FIELD_SIZE + \
148 ASF_PPI_SEQUENCE_FIELD_SIZE + \
149 ASF_PPI_PADDING_LENGTH_FIELD_SIZE + \
150 4 + /*Send Time Field*/ \
151 2 /*Duration Field*/ \
152 )
153
154
155 // Replicated Data shall be at least 8 bytes long.
156 #define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08
157
158 #define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD (\
159 1 + /*Stream Number*/ \
160 ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
161 ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
162 ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
163 ASF_PAYLOAD_REPLICATED_DATA_LENGTH \
164 )
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
175 #define SINGLE_PAYLOAD_DATA_LENGTH (\
176 PACKET_SIZE - \
177 PACKET_HEADER_MIN_SIZE - \
178 PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \
179 )
180
181 #define MULTI_PAYLOAD_CONSTANT (\
182 PACKET_SIZE - \
183 PACKET_HEADER_MIN_SIZE - \
184 1 - /*Payload Flags*/ \
185 2*PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \
186 )
187
188 static int preroll_time = 2000;
189
190 static const uint8_t error_spread_ADPCM_G726[] = { 0x01, 0x90, 0x01, 0x90, 0x01, 0x01, 0x00, 0x00 };
191
192 static void put_guid(ByteIOContext *s, const GUID *g)
193 {
194 int i;
195
196 put_le32(s, g->v1);
197 put_le16(s, g->v2);
198 put_le16(s, g->v3);
199 for(i=0;i<8;i++)
200 put_byte(s, g->v4[i]);
201 }
202
203 static void put_str16(ByteIOContext *s, const char *tag)
204 {
205 int c;
206
207 put_le16(s,strlen(tag) + 1);
208 for(;;) {
209 c = (uint8_t)*tag++;
210 put_le16(s, c);
211 if (c == '\0')
212 break;
213 }
214 }
215
216 static void put_str16_nolen(ByteIOContext *s, const char *tag)
217 {
218 int c;
219
220 for(;;) {
221 c = (uint8_t)*tag++;
222 put_le16(s, c);
223 if (c == '\0')
224 break;
225 }
226 }
227
228 static int64_t put_header(ByteIOContext *pb, const GUID *g)
229 {
230 int64_t pos;
231
232 pos = url_ftell(pb);
233 put_guid(pb, g);
234 put_le64(pb, 24);
235 return pos;
236 }
237
238 /* update header size */
239 static void end_header(ByteIOContext *pb, int64_t pos)
240 {
241 int64_t pos1;
242
243 pos1 = url_ftell(pb);
244 url_fseek(pb, pos + 16, SEEK_SET);
245 put_le64(pb, pos1 - pos);
246 url_fseek(pb, pos1, SEEK_SET);
247 }
248
249 /* write an asf chunk (only used in streaming case) */
250 static void put_chunk(AVFormatContext *s, int type, int payload_length, int flags)
251 {
252 ASFContext *asf = s->priv_data;
253 ByteIOContext *pb = &s->pb;
254 int length;
255
256 length = payload_length + 8;
257 put_le16(pb, type);
258 put_le16(pb, length); //size
259 put_le32(pb, asf->seqno);//sequence number
260 put_le16(pb, flags); /* unknown bytes */
261 put_le16(pb, length); //size_confirm
262 asf->seqno++;
263 }
264
265 /* convert from unix to windows time */
266 static int64_t unix_to_file_time(int ti)
267 {
268 int64_t t;
269
270 t = ti * int64_t_C(10000000);
271 t += int64_t_C(116444736000000000);
272 return t;
273 }
274
275 /* write the header (used two times if non streamed) */
276 static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size)
277 {
278 ASFContext *asf = s->priv_data;
279 ByteIOContext *pb = &s->pb;
280 int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
281 int has_title;
282 AVCodecContext *enc;
283 int64_t header_offset, cur_pos, hpos;
284 int bit_rate;
285
286 has_title = (s->title[0] || s->author[0] || s->copyright[0] || s->comment[0]);
287
288 bit_rate = 0;
289 for(n=0;n<s->nb_streams;n++) {
290 enc = s->streams[n]->codec;
291
292 av_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
293
294 bit_rate += enc->bit_rate;
295 }
296
297 if (asf->is_streamed) {
298 put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
299 }
300
301 put_guid(pb, &asf_header);
302 put_le64(pb, -1); /* header length, will be patched after */
303 put_le32(pb, 3 + has_title + s->nb_streams); /* number of chunks in header */
304 put_byte(pb, 1); /* ??? */
305 put_byte(pb, 2); /* ??? */
306
307 /* file header */
308 header_offset = url_ftell(pb);
309 hpos = put_header(pb, &file_header);
310 put_guid(pb, &my_guid);
311 put_le64(pb, file_size);
312 file_time = 0;
313 put_le64(pb, unix_to_file_time(file_time));
314 put_le64(pb, asf->nb_packets); /* number of packets */
315 put_le64(pb, asf->duration); /* end time stamp (in 100ns units) */
316 put_le64(pb, asf->duration); /* duration (in 100ns units) */
317 put_le32(pb, preroll_time); /* start time stamp */
318 put_le32(pb, 0); /* ??? */
319 put_le32(pb, asf->is_streamed ? 1 : 0); /* ??? */
320 put_le32(pb, asf->packet_size); /* packet size */
321 put_le32(pb, asf->packet_size); /* packet size */
322 put_le32(pb, bit_rate); /* Nominal data rate in bps */
323 end_header(pb, hpos);
324
325 /* unknown headers */
326 hpos = put_header(pb, &head1_guid);
327 put_guid(pb, &head2_guid);
328 put_le32(pb, 6);
329 put_le16(pb, 0);
330 end_header(pb, hpos);
331
332 /* title and other infos */
333 if (has_title) {
334 hpos = put_header(pb, &comment_header);
335 if ( s->title[0] ) { put_le16(pb, 2 * (strlen(s->title ) + 1)); } else { put_le16(pb, 0); }
336 if ( s->author[0] ) { put_le16(pb, 2 * (strlen(s->author ) + 1)); } else { put_le16(pb, 0); }
337 if ( s->copyright[0] ) { put_le16(pb, 2 * (strlen(s->copyright) + 1)); } else { put_le16(pb, 0); }
338 if ( s->comment[0] ) { put_le16(pb, 2 * (strlen(s->comment ) + 1)); } else { put_le16(pb, 0); }
339 put_le16(pb, 0);
340 if ( s->title[0] ) put_str16_nolen(pb, s->title);
341 if ( s->author[0] ) put_str16_nolen(pb, s->author);
342 if ( s->copyright[0] ) put_str16_nolen(pb, s->copyright);
343 if ( s->comment[0] ) put_str16_nolen(pb, s->comment);
344 end_header(pb, hpos);
345 }
346
347 /* stream headers */
348 for(n=0;n<s->nb_streams;n++) {
349 int64_t es_pos;
350 const uint8_t *er_spr = NULL;
351 int er_spr_len = 0;
352 // ASFStream *stream = &asf->streams[n];
353
354 enc = s->streams[n]->codec;
355 asf->streams[n].num = n + 1;
356 asf->streams[n].seq = 0;
357
358
359 if (enc->codec_type == CODEC_TYPE_AUDIO) {
360 if (enc->codec_id == CODEC_ID_ADPCM_G726) {
361 er_spr = error_spread_ADPCM_G726;
362 er_spr_len = sizeof(error_spread_ADPCM_G726);
363 }
364 }
365
366 switch(enc->codec_type) {
367 case CODEC_TYPE_AUDIO:
368 wav_extra_size = 0;
369 extra_size = 18 + wav_extra_size;
370 extra_size2 = er_spr_len;
371 break;
372 default:
373 case CODEC_TYPE_VIDEO:
374 wav_extra_size = enc->extradata_size;
375 extra_size = 0x33 + wav_extra_size;
376 extra_size2 = 0;
377 break;
378 }
379
380 hpos = put_header(pb, &stream_header);
381 if (enc->codec_type == CODEC_TYPE_AUDIO) {
382 put_guid(pb, &audio_stream);
383 if ((er_spr != NULL) && (er_spr_len != 0)) {
384 put_guid(pb, &audio_conceal_spread);
385 } else {
386 put_guid(pb, &video_conceal_none);
387 }
388 } else {
389 put_guid(pb, &video_stream);
390 put_guid(pb, &video_conceal_none);
391 }
392 put_le64(pb, 0); /* ??? */
393 es_pos = url_ftell(pb);
394 put_le32(pb, extra_size); /* wav header len */
395 put_le32(pb, extra_size2); /* additional data len */
396 put_le16(pb, n + 1); /* stream number */
397 put_le32(pb, 0); /* ??? */
398
399 if (enc->codec_type == CODEC_TYPE_AUDIO) {
400 /* WAVEFORMATEX header */
401 int wavsize = put_wav_header(pb, enc);
402 if ((enc->codec_id != CODEC_ID_MP3) && (enc->codec_id != CODEC_ID_MP2) && (enc->codec_id != CODEC_ID_ADPCM_IMA_WAV) && (enc->extradata_size==0)) {
403 wavsize += 2;
404 put_le16(pb, 0);
405 }
406
407 if (wavsize < 0)
408 return -1;
409 if (wavsize != extra_size) {
410 cur_pos = url_ftell(pb);
411 url_fseek(pb, es_pos, SEEK_SET);
412 put_le32(pb, wavsize); /* wav header len */
413 url_fseek(pb, cur_pos, SEEK_SET);
414 }
415 /* ERROR Correction */
416 if ((er_spr != NULL) && (er_spr_len != 0))
417 put_buffer(pb, er_spr, er_spr_len);
418 } else {
419 put_le32(pb, enc->width);
420 put_le32(pb, enc->height);
421 put_byte(pb, 2); /* ??? */
422 put_le16(pb, 40 + enc->extradata_size); /* size */
423
424 /* BITMAPINFOHEADER header */
425 put_bmp_header(pb, enc, codec_bmp_tags, 1);
426 }
427 end_header(pb, hpos);
428 }
429
430 /* media comments */
431
432 hpos = put_header(pb, &codec_comment_header);
433 put_guid(pb, &codec_comment1_header);
434 put_le32(pb, s->nb_streams);
435 for(n=0;n<s->nb_streams;n++) {
436 AVCodec *p;
437
438 enc = s->streams[n]->codec;
439 p = avcodec_find_encoder(enc->codec_id);
440
441 put_le16(pb, asf->streams[n].num);
442 put_str16(pb, p ? p->name : enc->codec_name);
443 put_le16(pb, 0); /* no parameters */
444
445
446 /* id */
447 if (enc->codec_type == CODEC_TYPE_AUDIO) {
448 put_le16(pb, 2);
449 if(!enc->codec_tag)
450 enc->codec_tag = codec_get_tag(codec_wav_tags, enc->codec_id);
451 if(!enc->codec_tag)
452 return -1;
453 put_le16(pb, enc->codec_tag);
454 } else {
455 put_le16(pb, 4);
456 if(!enc->codec_tag)
457 enc->codec_tag = codec_get_tag(codec_bmp_tags, enc->codec_id);
458 if(!enc->codec_tag)
459 return -1;
460 put_le32(pb, enc->codec_tag);
461 }
462 }
463 end_header(pb, hpos);
464
465 /* patch the header size fields */
466
467 cur_pos = url_ftell(pb);
468 header_size = cur_pos - header_offset;
469 if (asf->is_streamed) {
470 header_size += 8 + 30 + 50;
471
472 url_fseek(pb, header_offset - 10 - 30, SEEK_SET);
473 put_le16(pb, header_size);
474 url_fseek(pb, header_offset - 2 - 30, SEEK_SET);
475 put_le16(pb, header_size);
476
477 header_size -= 8 + 30 + 50;
478 }
479 header_size += 24 + 6;
480 url_fseek(pb, header_offset - 14, SEEK_SET);
481 put_le64(pb, header_size);
482 url_fseek(pb, cur_pos, SEEK_SET);
483
484 /* movie chunk, followed by packets of packet_size */
485 asf->data_offset = cur_pos;
486 put_guid(pb, &data_header);
487 put_le64(pb, data_chunk_size);
488 put_guid(pb, &my_guid);
489 put_le64(pb, asf->nb_packets); /* nb packets */
490 put_byte(pb, 1); /* ??? */
491 put_byte(pb, 1); /* ??? */
492 return 0;
493 }
494
495 static int asf_write_header(AVFormatContext *s)
496 {
497 ASFContext *asf = s->priv_data;
498
499 asf->packet_size = PACKET_SIZE;
500 asf->nb_packets = 0;
501
502 asf->last_indexed_pts = 0;
503 asf->index_ptr = (ASFIndex*)av_malloc( sizeof(ASFIndex) * ASF_INDEX_BLOCK );
504 asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
505 asf->nb_index_count = 0;
506 asf->maximum_packet = 0;
507
508 if (asf_write_header1(s, 0, 50) < 0) {
509 //av_free(asf);
510 return -1;
511 }
512
513 put_flush_packet(&s->pb);
514
515 asf->packet_nb_payloads = 0;
516 asf->prev_packet_sent_time = 0;
517 asf->packet_timestamp_start = -1;
518 asf->packet_timestamp_end = -1;
519 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
520 NULL, NULL, NULL, NULL);
521
522 return 0;
523 }
524
525 static int asf_write_stream_header(AVFormatContext *s)
526 {
527 ASFContext *asf = s->priv_data;
528
529 asf->is_streamed = 1;
530
531 return asf_write_header(s);
532 }
533
534 static int put_payload_parsing_info(
535 AVFormatContext *s,
536 unsigned int sendtime,
537 unsigned int duration,
538 int nb_payloads,
539 int padsize
540 )
541 {
542 ASFContext *asf = s->priv_data;
543 ByteIOContext *pb = &s->pb;
544 int ppi_size, i;
545 unsigned char *start_ppi_ptr = pb->buf_ptr;
546
547 int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS;
548
549 put_byte(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
550 for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++){
551 put_byte(pb, 0x0);
552 }
553
554 if (asf->multi_payloads_present)
555 iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT;
556
557 if (padsize > 0) {
558 if (padsize < 256)
559 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE;
560 else
561 iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD;
562 }
563 put_byte(pb, iLengthTypeFlags);
564
565 put_byte(pb, ASF_PPI_PROPERTY_FLAGS);
566
567 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD)
568 put_le16(pb, padsize - 2);
569 if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE)
570 put_byte(pb, padsize - 1);
571
572 put_le32(pb, sendtime);
573 put_le16(pb, duration);
574 if (asf->multi_payloads_present)
575 put_byte(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
576
577 ppi_size = pb->buf_ptr - start_ppi_ptr;
578
579 return ppi_size;
580 }
581
582 static void flush_packet(AVFormatContext *s)
583 {
584 ASFContext *asf = s->priv_data;
585 int packet_hdr_size, packet_filled_size;
586
587 if (asf->is_streamed) {
588 put_chunk(s, 0x4424, asf->packet_size, 0);
589 }
590
591 packet_hdr_size = put_payload_parsing_info(
592 s,
593 asf->packet_timestamp_start,
594 asf->packet_timestamp_end - asf->packet_timestamp_start,
595 asf->packet_nb_payloads,
596 asf->packet_size_left
597 );
598
599 packet_filled_size = PACKET_SIZE - packet_hdr_size - asf->packet_size_left;
600 memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left);
601
602 put_buffer(&s->pb, asf->packet_buf, asf->packet_size - packet_hdr_size);
603
604 put_flush_packet(&s->pb);
605 asf->nb_packets++;
606 asf->packet_nb_payloads = 0;
607 asf->prev_packet_sent_time = asf->packet_timestamp_start;
608 asf->packet_timestamp_start = -1;
609 asf->packet_timestamp_end = -1;
610 init_put_byte(&asf->pb, asf->packet_buf, asf->packet_size, 1,
611 NULL, NULL, NULL, NULL);
612 }
613
614 static void put_payload_header(
615 AVFormatContext *s,
616 ASFStream *stream,
617 int presentation_time,
618 int m_obj_size,
619 int m_obj_offset,
620 int payload_len,
621 int flags
622 )
623 {
624 ASFContext *asf = s->priv_data;
625 ByteIOContext *pb = &asf->pb;
626 int val;
627
628 val = stream->num;
629 if (flags & PKT_FLAG_KEY)
630 val |= ASF_PL_FLAG_KEY_FRAME;
631 put_byte(pb, val);
632
633 put_byte(pb, stream->seq); //Media object number
634 put_le32(pb, m_obj_offset); //Offset Into Media Object
635
636 // Replicated Data shall be at least 8 bytes long.
637 // The first 4 bytes of data shall contain the
638 // Size of the Media Object that the payload belongs to.
639 // The next 4 bytes of data shall contain the
640 // Presentation Time for the media object that the payload belongs to.
641 put_byte(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
642
643 put_le32(pb, m_obj_size); //Replicated Data - Media Object Size
644 put_le32(pb, presentation_time);//Replicated Data - Presentation Time
645
646 if (asf->multi_payloads_present){
647 put_le16(pb, payload_len); //payload length
648 }
649 }
650
651 static void put_frame(
652 AVFormatContext *s,
653 ASFStream *stream,
654 int timestamp,
655 const uint8_t *buf,
656 int m_obj_size,
657 int flags
658 )
659 {
660 ASFContext *asf = s->priv_data;
661 int m_obj_offset, payload_len, frag_len1;
662
663 m_obj_offset = 0;
664 while (m_obj_offset < m_obj_size) {
665 payload_len = m_obj_size - m_obj_offset;
666 if (asf->packet_timestamp_start == -1) {
667 asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT);
668
669 if (asf->multi_payloads_present){
670 asf->packet_size_left = PACKET_SIZE; //For debug
671 asf->packet_size_left = PACKET_SIZE - PACKET_HEADER_MIN_SIZE - 1;
672 frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
673 }
674 else {
675 asf->packet_size_left = PACKET_SIZE - PACKET_HEADER_MIN_SIZE;
676 frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
677 }
678 if (asf->prev_packet_sent_time > timestamp)
679 asf->packet_timestamp_start = asf->prev_packet_sent_time;
680 else
681 asf->packet_timestamp_start = timestamp;
682 }
683 else {
684 // multi payloads
685 frag_len1 = asf->packet_size_left - PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS;
686
687 if (asf->prev_packet_sent_time > timestamp)
688 asf->packet_timestamp_start = asf->prev_packet_sent_time;
689 else if (asf->packet_timestamp_start >= timestamp)
690 asf->packet_timestamp_start = timestamp;
691 }
692 if (frag_len1 > 0) {
693 if (payload_len > frag_len1)
694 payload_len = frag_len1;
695 else if (payload_len == (frag_len1 - 1))
696 payload_len = frag_len1 - 2; //additional byte need to put padding length
697
698 put_payload_header(s, stream, timestamp+preroll_time, m_obj_size, m_obj_offset, payload_len, flags);
699 put_buffer(&asf->pb, buf, payload_len);
700
701 if (asf->multi_payloads_present)
702 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
703 else
704 asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD);
705 asf->packet_timestamp_end = timestamp;
706
707 asf->packet_nb_payloads++;
708 } else {
709 payload_len = 0;
710 }
711 m_obj_offset += payload_len;
712 buf += payload_len;
713
714 if (!asf->multi_payloads_present)
715 flush_packet(s);
716 else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + 1))
717 flush_packet(s);
718 }
719 stream->seq++;
720 }
721
722 static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
723 {
724 ASFContext *asf = s->priv_data;
725 ASFStream *stream;
726 int64_t duration;
727 AVCodecContext *codec;
728 int64_t packet_st,pts;
729 int start_sec,i;
730
731 codec = s->streams[pkt->stream_index]->codec;
732 stream = &asf->streams[pkt->stream_index];
733
734 //XXX /FIXME use duration from AVPacket (quick hack by)
735 pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
736 if (pts == AV_NOPTS_VALUE) {
737 if (codec->codec_type == CODEC_TYPE_AUDIO) {
738 duration = (codec->frame_number * (int64_t)codec->frame_size * int64_t_C(10000000)) /
739 codec->sample_rate;
740 } else {
741 duration = av_rescale(codec->frame_number * (int64_t)codec->time_base.num, 10000000, codec->time_base.den);
742 }
743 } else {
744 duration = pts * 10000;
745 }
746 if (duration > asf->duration)
747 asf->duration = duration;
748
749 packet_st = asf->nb_packets;
750 put_frame(s, stream, pkt->pts, pkt->data, pkt->size, pkt->flags);
751
752 /* check index */
753 if ((!asf->is_streamed) && (codec->codec_type == CODEC_TYPE_VIDEO) && (pkt->flags & PKT_FLAG_KEY)) {
754 start_sec = (int)(duration / int64_t_C(10000000));
755 if (start_sec != (int)(asf->last_indexed_pts / int64_t_C(10000000))) {
756 for(i=asf->nb_index_count;i<start_sec;i++) {
757 if (i>=asf->nb_index_memory_alloc) {
758 asf->nb_index_memory_alloc += ASF_INDEX_BLOCK;
759 asf->index_ptr = (ASFIndex*)av_realloc( asf->index_ptr, sizeof(ASFIndex) * asf->nb_index_memory_alloc );
760 }
761 // store
762 asf->index_ptr[i].packet_number = (uint32_t)packet_st;
763 asf->index_ptr[i].packet_count = (uint16_t)(asf->nb_packets-packet_st);
764 if (asf->maximum_packet < (uint16_t)(asf->nb_packets-packet_st))
765 asf->maximum_packet = (uint16_t)(asf->nb_packets-packet_st);
766 }
767 asf->nb_index_count = start_sec;
768 asf->last_indexed_pts = duration;
769 }
770 }
771 return 0;
772 }
773
774 //
775 static int asf_write_index(AVFormatContext *s, ASFIndex *index, uint16_t max, uint32_t count)
776 {
777 ByteIOContext *pb = &s->pb;
778 int i;
779
780 put_guid(pb, &simple_index_header);
781 put_le64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2)*count);
782 put_guid(pb, &my_guid);
783 put_le64(pb, ASF_INDEXED_INTERVAL);
784 put_le32(pb, max);
785 put_le32(pb, count);
786 for(i=0; i<count; i++) {
787 put_le32(pb, index[i].packet_number);
788 put_le16(pb, index[i].packet_count);
789 }
790
791 return 0;
792 }
793
794 static int asf_write_trailer(AVFormatContext *s)
795 {
796 ASFContext *asf = s->priv_data;
797 int64_t file_size,data_size;
798
799 /* flush the current packet */
800 if (asf->pb.buf_ptr > asf->pb.buffer)
801 flush_packet(s);
802
803 /* write index */
804 data_size = url_ftell(&s->pb);
805 if ((!asf->is_streamed) && (asf->nb_index_count != 0)) {
806 asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
807 }
808 put_flush_packet(&s->pb);
809
810 if (asf->is_streamed) {
811 put_chunk(s, 0x4524, 0, 0); /* end of stream */
812 } else {
813 /* rewrite an updated header */
814 file_size = url_ftell(&s->pb);
815 url_fseek(&s->pb, 0, SEEK_SET);
816 asf_write_header1(s, file_size, data_size - asf->data_offset);
817 }
818
819 put_flush_packet(&s->pb);
820 av_free(asf->index_ptr);
821 return 0;
822 }
823
824 #ifdef CONFIG_ASF_MUXER
825 AVOutputFormat asf_muxer = {
826 "asf",
827 "asf format",
828 "video/x-ms-asf",
829 "asf,wmv,wma",
830 sizeof(ASFContext),
831 #ifdef CONFIG_MP3LAME
832 CODEC_ID_MP3,
833 #else
834 CODEC_ID_MP2,
835 #endif
836 CODEC_ID_MSMPEG4V3,
837 asf_write_header,
838 asf_write_packet,
839 asf_write_trailer,
840 .flags = AVFMT_GLOBALHEADER,
841 };
842 #endif
843
844 #ifdef CONFIG_ASF_STREAM_MUXER
845 AVOutputFormat asf_stream_muxer = {
846 "asf_stream",
847 "asf format",
848 "video/x-ms-asf",
849 "asf,wmv,wma",
850 sizeof(ASFContext),
851 #ifdef CONFIG_MP3LAME
852 CODEC_ID_MP3,
853 #else
854 CODEC_ID_MP2,
855 #endif
856 CODEC_ID_MSMPEG4V3,
857 asf_write_stream_header,
858 asf_write_packet,
859 asf_write_trailer,
860 .flags = AVFMT_GLOBALHEADER,
861 };
862 #endif //CONFIG_ASF_STREAM_MUXER