support SVQ1 in AVI files, just for fun
[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 { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') },
164 { 0, 0 },
165 };
166
167 unsigned int codec_get_tag(const CodecTag *tags, int id)
168 {
169 while (tags->id != 0) {
170 if (tags->id == id)
171 return tags->tag;
172 tags++;
173 }
174 return 0;
175 }
176
177 static unsigned int codec_get_asf_tag(const CodecTag *tags, int id)
178 {
179 while (tags->id != 0) {
180 if (!tags->invalid_asf && tags->id == id)
181 return tags->tag;
182 tags++;
183 }
184 return 0;
185 }
186
187 enum CodecID codec_get_id(const CodecTag *tags, unsigned int tag)
188 {
189 while (tags->id != 0) {
190 if( toupper((tag >> 0)&0xFF) == toupper((tags->tag >> 0)&0xFF)
191 && toupper((tag >> 8)&0xFF) == toupper((tags->tag >> 8)&0xFF)
192 && toupper((tag >>16)&0xFF) == toupper((tags->tag >>16)&0xFF)
193 && toupper((tag >>24)&0xFF) == toupper((tags->tag >>24)&0xFF))
194 return tags->id;
195 tags++;
196 }
197 return CODEC_ID_NONE;
198 }
199
200 unsigned int codec_get_bmp_tag(int id)
201 {
202 return codec_get_tag(codec_bmp_tags, id);
203 }
204
205 unsigned int codec_get_wav_tag(int id)
206 {
207 return codec_get_tag(codec_wav_tags, id);
208 }
209
210 enum CodecID codec_get_bmp_id(unsigned int tag)
211 {
212 return codec_get_id(codec_bmp_tags, tag);
213 }
214
215 enum CodecID codec_get_wav_id(unsigned int tag)
216 {
217 return codec_get_id(codec_wav_tags, tag);
218 }
219
220 #ifdef CONFIG_ENCODERS
221 /* BITMAPINFOHEADER header */
222 void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const CodecTag *tags, int for_asf)
223 {
224 put_le32(pb, 40 + enc->extradata_size); /* size */
225 put_le32(pb, enc->width);
226 put_le32(pb, enc->height);
227 put_le16(pb, 1); /* planes */
228
229 put_le16(pb, enc->bits_per_sample ? enc->bits_per_sample : 24); /* depth */
230 /* compression type */
231 put_le32(pb, for_asf ? codec_get_asf_tag(tags, enc->codec_id) : enc->codec_tag);
232 put_le32(pb, enc->width * enc->height * 3);
233 put_le32(pb, 0);
234 put_le32(pb, 0);
235 put_le32(pb, 0);
236 put_le32(pb, 0);
237
238 put_buffer(pb, enc->extradata, enc->extradata_size);
239
240 if (enc->extradata_size & 1)
241 put_byte(pb, 0);
242 }
243
244 static void parse_specific_params(AVCodecContext *stream, int *au_byterate, int *au_ssize, int *au_scale)
245 {
246 switch(stream->codec_id) {
247 case CODEC_ID_PCM_S16LE:
248 *au_scale = *au_ssize = 2*stream->channels;
249 *au_byterate = *au_ssize * stream->sample_rate;
250 break;
251 case CODEC_ID_PCM_U8:
252 case CODEC_ID_PCM_ALAW:
253 case CODEC_ID_PCM_MULAW:
254 *au_scale = *au_ssize = stream->channels;
255 *au_byterate = *au_ssize * stream->sample_rate;
256 break;
257 case CODEC_ID_MP2:
258 *au_ssize = 1;
259 *au_scale = 1;
260 *au_byterate = stream->bit_rate / 8;
261 case CODEC_ID_MP3:
262 *au_ssize = 1;
263 *au_scale = 1;
264 *au_byterate = stream->bit_rate / 8;
265 default:
266 *au_ssize = 1;
267 *au_scale = 1;
268 *au_byterate = stream->bit_rate / 8;
269 break;
270 }
271 }
272
273 static offset_t avi_start_new_riff(AVIContext *avi, ByteIOContext *pb,
274 const char* riff_tag, const char* list_tag)
275 {
276 offset_t loff;
277 int i;
278
279 avi->riff_id++;
280 for (i=0; i<MAX_STREAMS; i++)
281 avi->indexes[i].entry = 0;
282
283 avi->riff_start = start_tag(pb, "RIFF");
284 put_tag(pb, riff_tag);
285 loff = start_tag(pb, "LIST");
286 put_tag(pb, list_tag);
287 return loff;
288 }
289
290 static unsigned char* avi_stream2fourcc(unsigned char* tag, int index,
291 enum CodecType type)
292 {
293 tag[0] = '0';
294 tag[1] = '0' + index;
295 if (type == CODEC_TYPE_VIDEO) {
296 tag[2] = 'd';
297 tag[3] = 'c';
298 } else {
299 tag[2] = 'w';
300 tag[3] = 'b';
301 }
302 tag[4] = '\0';
303 return tag;
304 }
305
306 static int avi_write_header(AVFormatContext *s)
307 {
308 AVIContext *avi = s->priv_data;
309 ByteIOContext *pb = &s->pb;
310 int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
311 AVCodecContext *stream, *video_enc;
312 offset_t list1, list2, strh, strf;
313
314 /* header list */
315 avi->riff_id = 0;
316 list1 = avi_start_new_riff(avi, pb, "AVI ", "hdrl");
317
318 /* avi header */
319 put_tag(pb, "avih");
320 put_le32(pb, 14 * 4);
321 bitrate = 0;
322
323 video_enc = NULL;
324 for(n=0;n<s->nb_streams;n++) {
325 stream = &s->streams[n]->codec;
326 bitrate += stream->bit_rate;
327 if (stream->codec_type == CODEC_TYPE_VIDEO)
328 video_enc = stream;
329 }
330
331 nb_frames = 0;
332
333 if(video_enc){
334 put_le32(pb, (uint32_t)(int64_t_C(1000000) * video_enc->frame_rate_base / video_enc->frame_rate));
335 } else {
336 put_le32(pb, 0);
337 }
338 put_le32(pb, bitrate / 8); /* XXX: not quite exact */
339 put_le32(pb, 0); /* padding */
340 put_le32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */
341 avi->frames_hdr_all = url_ftell(pb); /* remember this offset to fill later */
342 put_le32(pb, nb_frames); /* nb frames, filled later */
343 put_le32(pb, 0); /* initial frame */
344 put_le32(pb, s->nb_streams); /* nb streams */
345 put_le32(pb, 1024 * 1024); /* suggested buffer size */
346 if(video_enc){
347 put_le32(pb, video_enc->width);
348 put_le32(pb, video_enc->height);
349 } else {
350 put_le32(pb, 0);
351 put_le32(pb, 0);
352 }
353 put_le32(pb, 0); /* reserved */
354 put_le32(pb, 0); /* reserved */
355 put_le32(pb, 0); /* reserved */
356 put_le32(pb, 0); /* reserved */
357
358 /* stream list */
359 for(i=0;i<n;i++) {
360 list2 = start_tag(pb, "LIST");
361 put_tag(pb, "strl");
362
363 stream = &s->streams[i]->codec;
364
365 /* FourCC should really be set by the codec itself */
366 if (! stream->codec_tag) {
367 stream->codec_tag = codec_get_bmp_tag(stream->codec_id);
368 }
369
370 /* stream generic header */
371 strh = start_tag(pb, "strh");
372 switch(stream->codec_type) {
373 case CODEC_TYPE_VIDEO:
374 put_tag(pb, "vids");
375 put_le32(pb, stream->codec_tag);
376 put_le32(pb, 0); /* flags */
377 put_le16(pb, 0); /* priority */
378 put_le16(pb, 0); /* language */
379 put_le32(pb, 0); /* initial frame */
380
381 put_le32(pb, stream->frame_rate_base); /* scale */
382 put_le32(pb, stream->frame_rate); /* rate */
383
384 put_le32(pb, 0); /* start */
385 avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
386 put_le32(pb, nb_frames); /* length, XXX: fill later */
387 put_le32(pb, 1024 * 1024); /* suggested buffer size */
388 put_le32(pb, -1); /* quality */
389 put_le32(pb, stream->width * stream->height * 3); /* sample size */
390 put_le16(pb, 0);
391 put_le16(pb, 0);
392 put_le16(pb, stream->width);
393 put_le16(pb, stream->height);
394 break;
395 case CODEC_TYPE_AUDIO:
396 put_tag(pb, "auds");
397 put_le32(pb, 1); /* tag */
398 put_le32(pb, 0); /* flags */
399 put_le16(pb, 0); /* priority */
400 put_le16(pb, 0); /* language */
401 put_le32(pb, 0); /* initial frame */
402 parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
403 put_le32(pb, au_scale); /* scale */
404 put_le32(pb, au_byterate); /* rate */
405 put_le32(pb, 0); /* start */
406 avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
407 put_le32(pb, 0); /* length, XXX: filled later */
408 put_le32(pb, 12 * 1024); /* suggested buffer size */
409 put_le32(pb, -1); /* quality */
410 put_le32(pb, au_ssize); /* sample size */
411 put_le32(pb, 0);
412 put_le32(pb, 0);
413 break;
414 default:
415 av_abort();
416 }
417 end_tag(pb, strh);
418
419 strf = start_tag(pb, "strf");
420 switch(stream->codec_type) {
421 case CODEC_TYPE_VIDEO:
422 put_bmp_header(pb, stream, codec_bmp_tags, 0);
423 break;
424 case CODEC_TYPE_AUDIO:
425 if (put_wav_header(pb, stream) < 0) {
426 av_free(avi);
427 return -1;
428 }
429 break;
430 default:
431 av_abort();
432 }
433 end_tag(pb, strf);
434
435 if (!url_is_streamed(pb)) {
436 unsigned char tag[5];
437 int j;
438
439 /* Starting to lay out AVI OpenDML master index.
440 * We want to make it JUNK entry for now, since we'd
441 * like to get away without making AVI an OpenDML one
442 * for compatibility reasons.
443 */
444 avi->indexes[i].entry = avi->indexes[i].ents_allocated = 0;
445 avi->indexes[i].indx_start = start_tag(pb, "JUNK");
446 put_le16(pb, 4); /* wLongsPerEntry */
447 put_byte(pb, 0); /* bIndexSubType (0 == frame index) */
448 put_byte(pb, 0); /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */
449 put_le32(pb, 0); /* nEntriesInUse (will fill out later on) */
450 put_tag(pb, avi_stream2fourcc(&tag[0], i, stream->codec_type));
451 /* dwChunkId */
452 put_le64(pb, 0); /* dwReserved[3]
453 put_le32(pb, 0); Must be 0. */
454 for (j=0; j < AVI_MASTER_INDEX_SIZE * 2; j++)
455 put_le64(pb, 0);
456 end_tag(pb, avi->indexes[i].indx_start);
457 }
458
459 end_tag(pb, list2);
460 }
461
462 if (!url_is_streamed(pb)) {
463 /* AVI could become an OpenDML one, if it grows beyond 2Gb range */
464 avi->odml_list = start_tag(pb, "JUNK");
465 put_tag(pb, "odml");
466 put_tag(pb, "dmlh");
467 put_le32(pb, 248);
468 for (i = 0; i < 248; i+= 4)
469 put_le32(pb, 0);
470 end_tag(pb, avi->odml_list);
471 }
472
473 end_tag(pb, list1);
474
475 avi->movi_list = start_tag(pb, "LIST");
476 put_tag(pb, "movi");
477
478 put_flush_packet(pb);
479
480 return 0;
481 }
482
483 static int avi_write_ix(AVFormatContext *s)
484 {
485 ByteIOContext *pb = &s->pb;
486 AVIContext *avi = s->priv_data;
487 unsigned char tag[5];
488 unsigned char ix_tag[] = "ix00";
489 int i, j;
490
491 if (avi->riff_id > AVI_MASTER_INDEX_SIZE)
492 return -1;
493
494 for (i=0;i<s->nb_streams;i++) {
495 offset_t ix, pos;
496
497 avi_stream2fourcc(&tag[0], i, s->streams[i]->codec.codec_type);
498 ix_tag[3] = '0' + i;
499
500 /* Writing AVI OpenDML leaf index chunk */
501 ix = url_ftell(pb);
502 put_tag(pb, &ix_tag[0]); /* ix?? */
503 put_le32(pb, avi->indexes[i].entry * 8 + 24);
504 /* chunk size */
505 put_le16(pb, 2); /* wLongsPerEntry */
506 put_byte(pb, 0); /* bIndexSubType (0 == frame index) */
507 put_byte(pb, 1); /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */
508 put_le32(pb, avi->indexes[i].entry);
509 /* nEntriesInUse */
510 put_tag(pb, &tag[0]); /* dwChunkId */
511 put_le64(pb, avi->movi_list);/* qwBaseOffset */
512 put_le32(pb, 0); /* dwReserved_3 (must be 0) */
513
514 for (j=0; j<avi->indexes[i].entry; j++) {
515 AVIIentry* ie = avi_get_ientry(&avi->indexes[i], j);
516 put_le32(pb, ie->pos + 8);
517 put_le32(pb, ((uint32_t)ie->len & ~0x80000000) |
518 (ie->flags & 0x10 ? 0 : 0x80000000));
519 }
520 put_flush_packet(pb);
521 pos = url_ftell(pb);
522
523 /* Updating one entry in the AVI OpenDML master index */
524 url_fseek(pb, avi->indexes[i].indx_start - 8, SEEK_SET);
525 put_tag(pb, "indx"); /* enabling this entry */
526 url_fskip(pb, 8);
527 put_le32(pb, avi->riff_id); /* nEntriesInUse */
528 url_fskip(pb, 16*avi->riff_id);
529 put_le64(pb, ix); /* qwOffset */
530 put_le32(pb, pos - ix); /* dwSize */
531 put_le32(pb, avi->indexes[i].entry); /* dwDuration */
532
533 url_fseek(pb, pos, SEEK_SET);
534 }
535 return 0;
536 }
537
538 static int avi_write_idx1(AVFormatContext *s)
539 {
540 ByteIOContext *pb = &s->pb;
541 AVIContext *avi = s->priv_data;
542 offset_t file_size, idx_chunk;
543 int i, n, nb_frames, au_byterate, au_ssize, au_scale;
544 AVCodecContext *stream;
545 unsigned char tag[5];
546
547 if (!url_is_streamed(pb)) {
548 AVIIentry* ie = 0, *tie;
549 int entry[MAX_STREAMS];
550 int empty, stream_id = -1;
551
552 idx_chunk = start_tag(pb, "idx1");
553 memset(&entry[0], 0, sizeof(entry));
554 do {
555 empty = 1;
556 for (i=0; i<s->nb_streams; i++) {
557 if (avi->indexes[i].entry <= entry[i])
558 continue;
559
560 tie = avi_get_ientry(&avi->indexes[i], entry[i]);
561 if (empty || tie->pos < ie->pos) {
562 ie = tie;
563 stream_id = i;
564 }
565 empty = 0;
566 }
567 if (!empty) {
568 avi_stream2fourcc(&tag[0], stream_id,
569 s->streams[stream_id]->codec.codec_type);
570 put_tag(pb, &tag[0]);
571 put_le32(pb, ie->flags);
572 put_le32(pb, ie->pos);
573 put_le32(pb, ie->len);
574 entry[stream_id]++;
575 }
576 } while (!empty);
577 end_tag(pb, idx_chunk);
578
579 /* Fill in frame/sample counters */
580 file_size = url_ftell(pb);
581 nb_frames = 0;
582 for(n=0;n<s->nb_streams;n++) {
583 if (avi->frames_hdr_strm[n] != 0) {
584 stream = &s->streams[n]->codec;
585 url_fseek(pb, avi->frames_hdr_strm[n], SEEK_SET);
586 if (stream->codec_type == CODEC_TYPE_VIDEO) {
587 put_le32(pb, stream->frame_number);
588 if (nb_frames < stream->frame_number)
589 nb_frames = stream->frame_number;
590 } else {
591 if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3) {
592 put_le32(pb, stream->frame_number);
593 nb_frames += stream->frame_number;
594 } else {
595 parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
596 put_le32(pb, avi->audio_strm_length[n] / au_ssize);
597 }
598 }
599 }
600 }
601 if (avi->frames_hdr_all != 0) {
602 url_fseek(pb, avi->frames_hdr_all, SEEK_SET);
603 put_le32(pb, nb_frames);
604 }
605 url_fseek(pb, file_size, SEEK_SET);
606 }
607 return 0;
608 }
609
610 static int avi_write_packet(AVFormatContext *s, int stream_index,
611 const uint8_t *buf, int size, int64_t pts)
612 {
613 AVIContext *avi = s->priv_data;
614 ByteIOContext *pb = &s->pb;
615 unsigned char tag[5];
616 unsigned int flags;
617 AVCodecContext *enc;
618
619 if (url_ftell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE) {
620 avi_write_ix(s);
621 end_tag(pb, avi->movi_list);
622
623 if (avi->riff_id == 1)
624 avi_write_idx1(s);
625
626 end_tag(pb, avi->riff_start);
627 avi->movi_list = avi_start_new_riff(avi, pb, "AVIX", "movi");
628 }
629
630 enc = &s->streams[stream_index]->codec;
631 avi_stream2fourcc(&tag[0], stream_index, enc->codec_type);
632 if (enc->codec_type == CODEC_TYPE_AUDIO) {
633 avi->audio_strm_length[stream_index] += size;
634 flags = 0x10;
635 } else
636 flags = enc->coded_frame->key_frame ? 0x10 : 0x00;
637
638 if (!url_is_streamed(&s->pb)) {
639 AVIIndex* idx = &avi->indexes[stream_index];
640 int cl = idx->entry / AVI_INDEX_CLUSTER_SIZE;
641 int id = idx->entry % AVI_INDEX_CLUSTER_SIZE;
642 if (idx->ents_allocated <= idx->entry) {
643 idx->cluster = av_realloc(idx->cluster, (cl+1)*sizeof(void*));
644 if (!idx->cluster)
645 return -1;
646 idx->cluster[cl] = av_malloc(AVI_INDEX_CLUSTER_SIZE*sizeof(AVIIentry));
647 if (!idx->cluster[cl])
648 return -1;
649 idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;
650 }
651
652 idx->cluster[cl][id].flags = flags;
653 idx->cluster[cl][id].pos = url_ftell(pb) - avi->movi_list;
654 idx->cluster[cl][id].len = size;
655 idx->entry++;
656 }
657
658 put_buffer(pb, tag, 4);
659 put_le32(pb, size);
660 put_buffer(pb, buf, size);
661 if (size & 1)
662 put_byte(pb, 0);
663
664 put_flush_packet(pb);
665 return 0;
666 }
667
668 static int avi_write_trailer(AVFormatContext *s)
669 {
670 AVIContext *avi = s->priv_data;
671 ByteIOContext *pb = &s->pb;
672 int res = 0;
673 int i, j, n, nb_frames;
674 offset_t file_size;
675
676 if (avi->riff_id == 1) {
677 end_tag(pb, avi->movi_list);
678 res = avi_write_idx1(s);
679 end_tag(pb, avi->riff_start);
680 } else {
681 avi_write_ix(s);
682 end_tag(pb, avi->movi_list);
683 end_tag(pb, avi->riff_start);
684
685 file_size = url_ftell(pb);
686 url_fseek(pb, avi->odml_list - 8, SEEK_SET);
687 put_tag(pb, "LIST"); /* Making this AVI OpenDML one */
688 url_fskip(pb, 16);
689
690 for (n=nb_frames=0;n<s->nb_streams;n++) {
691 AVCodecContext *stream = &s->streams[n]->codec;
692 if (stream->codec_type == CODEC_TYPE_VIDEO) {
693 if (nb_frames < stream->frame_number)
694 nb_frames = stream->frame_number;
695 } else {
696 if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3) {
697 nb_frames += stream->frame_number;
698 }
699 }
700 }
701 put_le32(pb, nb_frames);
702 url_fseek(pb, file_size, SEEK_SET);
703 }
704 put_flush_packet(pb);
705
706 for (i=0; i<MAX_STREAMS; i++) {
707 for (j=0; j<avi->indexes[i].ents_allocated/AVI_INDEX_CLUSTER_SIZE; j++)
708 av_free(avi->indexes[i].cluster[j]);
709 av_free(avi->indexes[i].cluster);
710 avi->indexes[i].cluster = NULL;
711 avi->indexes[i].ents_allocated = avi->indexes[i].entry = 0;
712 }
713
714 return res;
715 }
716
717 static AVOutputFormat avi_oformat = {
718 "avi",
719 "avi format",
720 "video/x-msvideo",
721 "avi",
722 sizeof(AVIContext),
723 CODEC_ID_MP2,
724 CODEC_ID_MPEG4,
725 avi_write_header,
726 avi_write_packet,
727 avi_write_trailer,
728 };
729
730 int avienc_init(void)
731 {
732 av_register_output_format(&avi_oformat);
733 return 0;
734 }
735 #endif //CONFIG_ENCODERS