c7f94e21b6ffb4a72de63c0161078eab8e406fc3
[libav.git] / libavformat / avienc.c
1 /*
2 * AVI encoder.
3 * Copyright (c) 2000 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19 #include "avformat.h"
20 #include "avi.h"
21
22 /*
23 * TODO:
24 * - fill all fields if non streamed (nb_frames for example)
25 */
26
27 #ifdef CONFIG_ENCODERS
28 typedef struct AVIIentry {
29 unsigned int flags, pos, len;
30 } AVIIentry;
31
32 #define AVI_INDEX_CLUSTER_SIZE 16384
33
34 typedef struct AVIIndex {
35 offset_t indx_start;
36 int entry;
37 int ents_allocated;
38 AVIIentry** cluster;
39 } AVIIndex;
40
41 typedef struct {
42 offset_t riff_start, movi_list, odml_list;
43 offset_t frames_hdr_all, frames_hdr_strm[MAX_STREAMS];
44 int audio_strm_length[MAX_STREAMS];
45 int riff_id;
46
47 AVIIndex indexes[MAX_STREAMS];
48 } AVIContext;
49
50 static inline AVIIentry* avi_get_ientry(AVIIndex* idx, int ent_id)
51 {
52 int cl = ent_id / AVI_INDEX_CLUSTER_SIZE;
53 int id = ent_id % AVI_INDEX_CLUSTER_SIZE;
54 return &idx->cluster[cl][id];
55 }
56
57 offset_t start_tag(ByteIOContext *pb, const char *tag)
58 {
59 put_tag(pb, tag);
60 put_le32(pb, 0);
61 return url_ftell(pb);
62 }
63
64 void end_tag(ByteIOContext *pb, offset_t start)
65 {
66 offset_t pos;
67
68 pos = url_ftell(pb);
69 url_fseek(pb, start - 4, SEEK_SET);
70 put_le32(pb, (uint32_t)(pos - start));
71 url_fseek(pb, pos, SEEK_SET);
72 }
73 #endif //CONFIG_ENCODERS
74
75 /* Note: when encoding, the first matching tag is used, so order is
76 important if multiple tags possible for a given codec. */
77 const CodecTag codec_bmp_tags[] = {
78 { CODEC_ID_H264, MKTAG('H', '2', '6', '4') },
79
80 { CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
81 { CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
82 { CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
83
84 /* added based on MPlayer */
85 { CODEC_ID_H263P, MKTAG('U', '2', '6', '3') },
86 { CODEC_ID_H263P, MKTAG('v', 'i', 'v', '1') },
87
88 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X'), .invalid_asf = 1 },
89 { CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0'), .invalid_asf = 1 },
90 { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D'), .invalid_asf = 1 },
91 { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
92 { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
93 { CODEC_ID_MPEG4, MKTAG(0x04, 0, 0, 0) }, /* some broken avi use this */
94
95 /* added based on MPlayer */
96 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', '1') },
97 { CODEC_ID_MPEG4, MKTAG('B', 'L', 'Z', '0') },
98 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
99 { CODEC_ID_MPEG4, MKTAG('U', 'M', 'P', '4') },
100
101 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3'), .invalid_asf = 1 }, /* default signature when using MSMPEG4 */
102 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
103
104 /* added based on MPlayer */
105 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') },
106 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '5') },
107 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '6') },
108 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '4') },
109 { CODEC_ID_MSMPEG4V3, MKTAG('A', 'P', '4', '1') },
110 { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '1') },
111 { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '0') },
112
113 { CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') },
114
115 /* added based on MPlayer */
116 { CODEC_ID_MSMPEG4V2, MKTAG('D', 'I', 'V', '2') },
117
118 { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') },
119
120 { CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') },
121
122 /* added based on MPlayer */
123 { CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') },
124 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') },
125 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') },
126 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') },
127 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '2', '5') },
128 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') },
129 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') },
130 { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'p', 'g', '2') },
131 { CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') },
132 { CODEC_ID_MPEG1VIDEO, MKTAG('V', 'C', 'R', '2') },
133 { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
134 { CODEC_ID_MJPEG, MKTAG('L', 'J', 'P', 'G') },
135 { CODEC_ID_LJPEG, MKTAG('L', 'J', 'P', 'G') },
136 { CODEC_ID_MJPEG, MKTAG('J', 'P', 'G', 'L') }, /* Pegasus lossless JPEG */
137 { CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },
138 { CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
139 { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
140 { CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') },
141 { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') },
142 { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '2') },
143 { CODEC_ID_VP3, MKTAG('V', 'P', '3', '1') },
144 { CODEC_ID_ASV1, MKTAG('A', 'S', 'V', '1') },
145 { CODEC_ID_ASV2, MKTAG('A', 'S', 'V', '2') },
146 { CODEC_ID_VCR1, MKTAG('V', 'C', 'R', '1') },
147 { CODEC_ID_FFV1, MKTAG('F', 'F', 'V', '1') },
148 { CODEC_ID_XAN_WC4, MKTAG('X', 'x', 'a', 'n') },
149 { CODEC_ID_MSRLE, MKTAG('m', 'r', 'l', 'e') },
150 { CODEC_ID_MSRLE, MKTAG(0x1, 0x0, 0x0, 0x0) },
151 { CODEC_ID_MSVIDEO1, MKTAG('M', 'S', 'V', 'C') },
152 { CODEC_ID_MSVIDEO1, MKTAG('m', 's', 'v', 'c') },
153 { CODEC_ID_MSVIDEO1, MKTAG('C', 'R', 'A', 'M') },
154 { CODEC_ID_MSVIDEO1, MKTAG('c', 'r', 'a', 'm') },
155 { CODEC_ID_MSVIDEO1, MKTAG('W', 'H', 'A', 'M') },
156 { CODEC_ID_MSVIDEO1, MKTAG('w', 'h', 'a', 'm') },
157 { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') },
158 { CODEC_ID_TRUEMOTION1, MKTAG('D', 'U', 'C', 'K') },
159 { CODEC_ID_MSZH, MKTAG('M', 'S', 'Z', 'H') },
160 { CODEC_ID_ZLIB, MKTAG('Z', 'L', 'I', 'B') },
161 { CODEC_ID_4XM, MKTAG('4', 'X', 'M', 'V') },
162 { CODEC_ID_FLV1, MKTAG('F', 'L', 'V', '1') },
163 { 0, 0 },
164 };
165
166 unsigned int codec_get_tag(const CodecTag *tags, int id)
167 {
168 while (tags->id != 0) {
169 if (tags->id == id)
170 return tags->tag;
171 tags++;
172 }
173 return 0;
174 }
175
176 static unsigned int codec_get_asf_tag(const CodecTag *tags, int id)
177 {
178 while (tags->id != 0) {
179 if (!tags->invalid_asf && tags->id == id)
180 return tags->tag;
181 tags++;
182 }
183 return 0;
184 }
185
186 enum CodecID codec_get_id(const CodecTag *tags, unsigned int tag)
187 {
188 while (tags->id != 0) {
189 if( toupper((tag >> 0)&0xFF) == toupper((tags->tag >> 0)&0xFF)
190 && toupper((tag >> 8)&0xFF) == toupper((tags->tag >> 8)&0xFF)
191 && toupper((tag >>16)&0xFF) == toupper((tags->tag >>16)&0xFF)
192 && toupper((tag >>24)&0xFF) == toupper((tags->tag >>24)&0xFF))
193 return tags->id;
194 tags++;
195 }
196 return CODEC_ID_NONE;
197 }
198
199 unsigned int codec_get_bmp_tag(int id)
200 {
201 return codec_get_tag(codec_bmp_tags, id);
202 }
203
204 unsigned int codec_get_wav_tag(int id)
205 {
206 return codec_get_tag(codec_wav_tags, id);
207 }
208
209 enum CodecID codec_get_bmp_id(unsigned int tag)
210 {
211 return codec_get_id(codec_bmp_tags, tag);
212 }
213
214 enum CodecID codec_get_wav_id(unsigned int tag)
215 {
216 return codec_get_id(codec_wav_tags, tag);
217 }
218
219 #ifdef CONFIG_ENCODERS
220 /* BITMAPINFOHEADER header */
221 void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const CodecTag *tags, int for_asf)
222 {
223 put_le32(pb, 40 + enc->extradata_size); /* size */
224 put_le32(pb, enc->width);
225 put_le32(pb, enc->height);
226 put_le16(pb, 1); /* planes */
227
228 put_le16(pb, enc->bits_per_sample ? enc->bits_per_sample : 24); /* depth */
229 /* compression type */
230 put_le32(pb, for_asf ? codec_get_asf_tag(tags, enc->codec_id) : enc->codec_tag);
231 put_le32(pb, enc->width * enc->height * 3);
232 put_le32(pb, 0);
233 put_le32(pb, 0);
234 put_le32(pb, 0);
235 put_le32(pb, 0);
236
237 put_buffer(pb, enc->extradata, enc->extradata_size);
238
239 if (enc->extradata_size & 1)
240 put_byte(pb, 0);
241 }
242
243 static void parse_specific_params(AVCodecContext *stream, int *au_byterate, int *au_ssize, int *au_scale)
244 {
245 switch(stream->codec_id) {
246 case CODEC_ID_PCM_S16LE:
247 *au_scale = *au_ssize = 2*stream->channels;
248 *au_byterate = *au_ssize * stream->sample_rate;
249 break;
250 case CODEC_ID_PCM_U8:
251 case CODEC_ID_PCM_ALAW:
252 case CODEC_ID_PCM_MULAW:
253 *au_scale = *au_ssize = stream->channels;
254 *au_byterate = *au_ssize * stream->sample_rate;
255 break;
256 case CODEC_ID_MP2:
257 *au_ssize = 1;
258 *au_scale = 1;
259 *au_byterate = stream->bit_rate / 8;
260 case CODEC_ID_MP3:
261 *au_ssize = 1;
262 *au_scale = 1;
263 *au_byterate = stream->bit_rate / 8;
264 default:
265 *au_ssize = 1;
266 *au_scale = 1;
267 *au_byterate = stream->bit_rate / 8;
268 break;
269 }
270 }
271
272 static offset_t avi_start_new_riff(AVIContext *avi, ByteIOContext *pb,
273 const char* riff_tag, const char* list_tag)
274 {
275 offset_t loff;
276 int i;
277
278 avi->riff_id++;
279 for (i=0; i<MAX_STREAMS; i++)
280 avi->indexes[i].entry = 0;
281
282 avi->riff_start = start_tag(pb, "RIFF");
283 put_tag(pb, riff_tag);
284 loff = start_tag(pb, "LIST");
285 put_tag(pb, list_tag);
286 return loff;
287 }
288
289 static unsigned char* avi_stream2fourcc(unsigned char* tag, int index,
290 enum CodecType type)
291 {
292 tag[0] = '0';
293 tag[1] = '0' + index;
294 if (type == CODEC_TYPE_VIDEO) {
295 tag[2] = 'd';
296 tag[3] = 'c';
297 } else {
298 tag[2] = 'w';
299 tag[3] = 'b';
300 }
301 tag[4] = '\0';
302 return tag;
303 }
304
305 static int avi_write_header(AVFormatContext *s)
306 {
307 AVIContext *avi = s->priv_data;
308 ByteIOContext *pb = &s->pb;
309 int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
310 AVCodecContext *stream, *video_enc;
311 offset_t list1, list2, strh, strf;
312
313 /* header list */
314 avi->riff_id = 0;
315 list1 = avi_start_new_riff(avi, pb, "AVI ", "hdrl");
316
317 /* avi header */
318 put_tag(pb, "avih");
319 put_le32(pb, 14 * 4);
320 bitrate = 0;
321
322 video_enc = NULL;
323 for(n=0;n<s->nb_streams;n++) {
324 stream = &s->streams[n]->codec;
325 bitrate += stream->bit_rate;
326 if (stream->codec_type == CODEC_TYPE_VIDEO)
327 video_enc = stream;
328 }
329
330 nb_frames = 0;
331
332 if(video_enc){
333 put_le32(pb, (uint32_t)(int64_t_C(1000000) * video_enc->frame_rate_base / video_enc->frame_rate));
334 } else {
335 put_le32(pb, 0);
336 }
337 put_le32(pb, bitrate / 8); /* XXX: not quite exact */
338 put_le32(pb, 0); /* padding */
339 put_le32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */
340 avi->frames_hdr_all = url_ftell(pb); /* remember this offset to fill later */
341 put_le32(pb, nb_frames); /* nb frames, filled later */
342 put_le32(pb, 0); /* initial frame */
343 put_le32(pb, s->nb_streams); /* nb streams */
344 put_le32(pb, 1024 * 1024); /* suggested buffer size */
345 if(video_enc){
346 put_le32(pb, video_enc->width);
347 put_le32(pb, video_enc->height);
348 } else {
349 put_le32(pb, 0);
350 put_le32(pb, 0);
351 }
352 put_le32(pb, 0); /* reserved */
353 put_le32(pb, 0); /* reserved */
354 put_le32(pb, 0); /* reserved */
355 put_le32(pb, 0); /* reserved */
356
357 /* stream list */
358 for(i=0;i<n;i++) {
359 list2 = start_tag(pb, "LIST");
360 put_tag(pb, "strl");
361
362 stream = &s->streams[i]->codec;
363
364 /* FourCC should really be set by the codec itself */
365 if (! stream->codec_tag) {
366 stream->codec_tag = codec_get_bmp_tag(stream->codec_id);
367 }
368
369 /* stream generic header */
370 strh = start_tag(pb, "strh");
371 switch(stream->codec_type) {
372 case CODEC_TYPE_VIDEO:
373 put_tag(pb, "vids");
374 put_le32(pb, stream->codec_tag);
375 put_le32(pb, 0); /* flags */
376 put_le16(pb, 0); /* priority */
377 put_le16(pb, 0); /* language */
378 put_le32(pb, 0); /* initial frame */
379
380 put_le32(pb, stream->frame_rate_base); /* scale */
381 put_le32(pb, stream->frame_rate); /* rate */
382
383 put_le32(pb, 0); /* start */
384 avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
385 put_le32(pb, nb_frames); /* length, XXX: fill later */
386 put_le32(pb, 1024 * 1024); /* suggested buffer size */
387 put_le32(pb, -1); /* quality */
388 put_le32(pb, stream->width * stream->height * 3); /* sample size */
389 put_le16(pb, 0);
390 put_le16(pb, 0);
391 put_le16(pb, stream->width);
392 put_le16(pb, stream->height);
393 break;
394 case CODEC_TYPE_AUDIO:
395 put_tag(pb, "auds");
396 put_le32(pb, 1); /* tag */
397 put_le32(pb, 0); /* flags */
398 put_le16(pb, 0); /* priority */
399 put_le16(pb, 0); /* language */
400 put_le32(pb, 0); /* initial frame */
401 parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
402 put_le32(pb, au_scale); /* scale */
403 put_le32(pb, au_byterate); /* rate */
404 put_le32(pb, 0); /* start */
405 avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
406 put_le32(pb, 0); /* length, XXX: filled later */
407 put_le32(pb, 12 * 1024); /* suggested buffer size */
408 put_le32(pb, -1); /* quality */
409 put_le32(pb, au_ssize); /* sample size */
410 put_le32(pb, 0);
411 put_le32(pb, 0);
412 break;
413 default:
414 av_abort();
415 }
416 end_tag(pb, strh);
417
418 strf = start_tag(pb, "strf");
419 switch(stream->codec_type) {
420 case CODEC_TYPE_VIDEO:
421 put_bmp_header(pb, stream, codec_bmp_tags, 0);
422 break;
423 case CODEC_TYPE_AUDIO:
424 if (put_wav_header(pb, stream) < 0) {
425 av_free(avi);
426 return -1;
427 }
428 break;
429 default:
430 av_abort();
431 }
432 end_tag(pb, strf);
433
434 if (!url_is_streamed(pb)) {
435 unsigned char tag[5];
436 int j;
437
438 /* Starting to lay out AVI OpenDML master index.
439 * We want to make it JUNK entry for now, since we'd
440 * like to get away without making AVI an OpenDML one
441 * for compatibility reasons.
442 */
443 avi->indexes[i].entry = avi->indexes[i].ents_allocated = 0;
444 avi->indexes[i].indx_start = start_tag(pb, "JUNK");
445 put_le16(pb, 4); /* wLongsPerEntry */
446 put_byte(pb, 0); /* bIndexSubType (0 == frame index) */
447 put_byte(pb, 0); /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */
448 put_le32(pb, 0); /* nEntriesInUse (will fill out later on) */
449 put_tag(pb, avi_stream2fourcc(&tag[0], i, stream->codec_type));
450 /* dwChunkId */
451 put_le64(pb, 0); /* dwReserved[3]
452 put_le32(pb, 0); Must be 0. */
453 for (j=0; j < AVI_MASTER_INDEX_SIZE * 2; j++)
454 put_le64(pb, 0);
455 end_tag(pb, avi->indexes[i].indx_start);
456 }
457
458 end_tag(pb, list2);
459 }
460
461 if (!url_is_streamed(pb)) {
462 /* AVI could become an OpenDML one, if it grows beyond 2Gb range */
463 avi->odml_list = start_tag(pb, "JUNK");
464 put_tag(pb, "odml");
465 put_tag(pb, "dmlh");
466 put_le32(pb, 248);
467 for (i = 0; i < 248; i+= 4)
468 put_le32(pb, 0);
469 end_tag(pb, avi->odml_list);
470 }
471
472 end_tag(pb, list1);
473
474 avi->movi_list = start_tag(pb, "LIST");
475 put_tag(pb, "movi");
476
477 put_flush_packet(pb);
478
479 return 0;
480 }
481
482 static int avi_write_ix(AVFormatContext *s)
483 {
484 ByteIOContext *pb = &s->pb;
485 AVIContext *avi = s->priv_data;
486 unsigned char tag[5];
487 unsigned char ix_tag[] = "ix00";
488 int i, j;
489
490 if (avi->riff_id > AVI_MASTER_INDEX_SIZE)
491 return -1;
492
493 for (i=0;i<s->nb_streams;i++) {
494 offset_t ix, pos;
495
496 avi_stream2fourcc(&tag[0], i, s->streams[i]->codec.codec_type);
497 ix_tag[3] = '0' + i;
498
499 /* Writing AVI OpenDML leaf index chunk */
500 ix = url_ftell(pb);
501 put_tag(pb, &ix_tag[0]); /* ix?? */
502 put_le32(pb, avi->indexes[i].entry * 8 + 24);
503 /* chunk size */
504 put_le16(pb, 2); /* wLongsPerEntry */
505 put_byte(pb, 0); /* bIndexSubType (0 == frame index) */
506 put_byte(pb, 1); /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */
507 put_le32(pb, avi->indexes[i].entry);
508 /* nEntriesInUse */
509 put_tag(pb, &tag[0]); /* dwChunkId */
510 put_le64(pb, avi->movi_list);/* qwBaseOffset */
511 put_le32(pb, 0); /* dwReserved_3 (must be 0) */
512
513 for (j=0; j<avi->indexes[i].entry; j++) {
514 AVIIentry* ie = avi_get_ientry(&avi->indexes[i], j);
515 put_le32(pb, ie->pos + 8);
516 put_le32(pb, ((uint32_t)ie->len & ~0x80000000) |
517 (ie->flags & 0x10 ? 0 : 0x80000000));
518 }
519 put_flush_packet(pb);
520 pos = url_ftell(pb);
521
522 /* Updating one entry in the AVI OpenDML master index */
523 url_fseek(pb, avi->indexes[i].indx_start - 8, SEEK_SET);
524 put_tag(pb, "indx"); /* enabling this entry */
525 url_fskip(pb, 8);
526 put_le32(pb, avi->riff_id); /* nEntriesInUse */
527 url_fskip(pb, 16*avi->riff_id);
528 put_le64(pb, ix); /* qwOffset */
529 put_le32(pb, pos - ix); /* dwSize */
530 put_le32(pb, avi->indexes[i].entry); /* dwDuration */
531
532 url_fseek(pb, pos, SEEK_SET);
533 }
534 return 0;
535 }
536
537 static int avi_write_idx1(AVFormatContext *s)
538 {
539 ByteIOContext *pb = &s->pb;
540 AVIContext *avi = s->priv_data;
541 offset_t file_size, idx_chunk;
542 int i, n, nb_frames, au_byterate, au_ssize, au_scale;
543 AVCodecContext *stream;
544 unsigned char tag[5];
545
546 if (!url_is_streamed(pb)) {
547 AVIIentry* ie = 0, *tie;
548 int entry[MAX_STREAMS];
549 int empty, stream_id = -1;
550
551 idx_chunk = start_tag(pb, "idx1");
552 memset(&entry[0], 0, sizeof(entry));
553 do {
554 empty = 1;
555 for (i=0; i<s->nb_streams; i++) {
556 if (avi->indexes[i].entry <= entry[i])
557 continue;
558
559 tie = avi_get_ientry(&avi->indexes[i], entry[i]);
560 if (empty || tie->pos < ie->pos) {
561 ie = tie;
562 stream_id = i;
563 }
564 empty = 0;
565 }
566 if (!empty) {
567 avi_stream2fourcc(&tag[0], stream_id,
568 s->streams[stream_id]->codec.codec_type);
569 put_tag(pb, &tag[0]);
570 put_le32(pb, ie->flags);
571 put_le32(pb, ie->pos);
572 put_le32(pb, ie->len);
573 entry[stream_id]++;
574 }
575 } while (!empty);
576 end_tag(pb, idx_chunk);
577
578 /* Fill in frame/sample counters */
579 file_size = url_ftell(pb);
580 nb_frames = 0;
581 for(n=0;n<s->nb_streams;n++) {
582 if (avi->frames_hdr_strm[n] != 0) {
583 stream = &s->streams[n]->codec;
584 url_fseek(pb, avi->frames_hdr_strm[n], SEEK_SET);
585 if (stream->codec_type == CODEC_TYPE_VIDEO) {
586 put_le32(pb, stream->frame_number);
587 if (nb_frames < stream->frame_number)
588 nb_frames = stream->frame_number;
589 } else {
590 if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3) {
591 put_le32(pb, stream->frame_number);
592 nb_frames += stream->frame_number;
593 } else {
594 parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
595 put_le32(pb, avi->audio_strm_length[n] / au_ssize);
596 }
597 }
598 }
599 }
600 if (avi->frames_hdr_all != 0) {
601 url_fseek(pb, avi->frames_hdr_all, SEEK_SET);
602 put_le32(pb, nb_frames);
603 }
604 url_fseek(pb, file_size, SEEK_SET);
605 }
606 return 0;
607 }
608
609 static int avi_write_packet(AVFormatContext *s, int stream_index,
610 const uint8_t *buf, int size, int64_t pts)
611 {
612 AVIContext *avi = s->priv_data;
613 ByteIOContext *pb = &s->pb;
614 unsigned char tag[5];
615 unsigned int flags;
616 AVCodecContext *enc;
617
618 if (url_ftell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE) {
619 avi_write_ix(s);
620 end_tag(pb, avi->movi_list);
621
622 if (avi->riff_id == 1)
623 avi_write_idx1(s);
624
625 end_tag(pb, avi->riff_start);
626 avi->movi_list = avi_start_new_riff(avi, pb, "AVIX", "movi");
627 }
628
629 enc = &s->streams[stream_index]->codec;
630 avi_stream2fourcc(&tag[0], stream_index, enc->codec_type);
631 if (enc->codec_type == CODEC_TYPE_AUDIO) {
632 avi->audio_strm_length[stream_index] += size;
633 flags = 0x10;
634 } else
635 flags = enc->coded_frame->key_frame ? 0x10 : 0x00;
636
637 if (!url_is_streamed(&s->pb)) {
638 AVIIndex* idx = &avi->indexes[stream_index];
639 int cl = idx->entry / AVI_INDEX_CLUSTER_SIZE;
640 int id = idx->entry % AVI_INDEX_CLUSTER_SIZE;
641 if (idx->ents_allocated <= idx->entry) {
642 idx->cluster = av_realloc(idx->cluster, (cl+1)*sizeof(void*));
643 if (!idx->cluster)
644 return -1;
645 idx->cluster[cl] = av_malloc(AVI_INDEX_CLUSTER_SIZE*sizeof(AVIIentry));
646 if (!idx->cluster[cl])
647 return -1;
648 idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;
649 }
650
651 idx->cluster[cl][id].flags = flags;
652 idx->cluster[cl][id].pos = url_ftell(pb) - avi->movi_list;
653 idx->cluster[cl][id].len = size;
654 idx->entry++;
655 }
656
657 put_buffer(pb, tag, 4);
658 put_le32(pb, size);
659 put_buffer(pb, buf, size);
660 if (size & 1)
661 put_byte(pb, 0);
662
663 put_flush_packet(pb);
664 return 0;
665 }
666
667 static int avi_write_trailer(AVFormatContext *s)
668 {
669 AVIContext *avi = s->priv_data;
670 ByteIOContext *pb = &s->pb;
671 int res = 0;
672 int i, j, n, nb_frames;
673 offset_t file_size;
674
675 if (avi->riff_id == 1) {
676 end_tag(pb, avi->movi_list);
677 res = avi_write_idx1(s);
678 end_tag(pb, avi->riff_start);
679 } else {
680 avi_write_ix(s);
681 end_tag(pb, avi->movi_list);
682 end_tag(pb, avi->riff_start);
683
684 file_size = url_ftell(pb);
685 url_fseek(pb, avi->odml_list - 8, SEEK_SET);
686 put_tag(pb, "LIST"); /* Making this AVI OpenDML one */
687 url_fskip(pb, 16);
688
689 for (n=nb_frames=0;n<s->nb_streams;n++) {
690 AVCodecContext *stream = &s->streams[n]->codec;
691 if (stream->codec_type == CODEC_TYPE_VIDEO) {
692 if (nb_frames < stream->frame_number)
693 nb_frames = stream->frame_number;
694 } else {
695 if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3) {
696 nb_frames += stream->frame_number;
697 }
698 }
699 }
700 put_le32(pb, nb_frames);
701 url_fseek(pb, file_size, SEEK_SET);
702 }
703 put_flush_packet(pb);
704
705 for (i=0; i<MAX_STREAMS; i++) {
706 for (j=0; j<avi->indexes[i].ents_allocated/AVI_INDEX_CLUSTER_SIZE; j++)
707 av_free(avi->indexes[i].cluster[j]);
708 av_free(avi->indexes[i].cluster);
709 avi->indexes[i].cluster = NULL;
710 avi->indexes[i].ents_allocated = avi->indexes[i].entry = 0;
711 }
712
713 return res;
714 }
715
716 static AVOutputFormat avi_oformat = {
717 "avi",
718 "avi format",
719 "video/x-msvideo",
720 "avi",
721 sizeof(AVIContext),
722 CODEC_ID_MP2,
723 CODEC_ID_MPEG4,
724 avi_write_header,
725 avi_write_packet,
726 avi_write_trailer,
727 };
728
729 int avienc_init(void)
730 {
731 av_register_output_format(&avi_oformat);
732 return 0;
733 }
734 #endif //CONFIG_ENCODERS