riffenc: take an AVStream instead of an AVCodecContext
[libav.git] / libavformat / avienc.c
1 /*
2 * AVI muxer
3 * Copyright (c) 2000 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 #include "avformat.h"
22 #include "internal.h"
23 #include "avi.h"
24 #include "avio_internal.h"
25 #include "riff.h"
26 #include "libavutil/intreadwrite.h"
27 #include "libavutil/dict.h"
28
29 /*
30 * TODO:
31 * - fill all fields if non streamed (nb_frames for example)
32 */
33
34 typedef struct AVIIentry {
35 unsigned int flags, pos, len;
36 } AVIIentry;
37
38 #define AVI_INDEX_CLUSTER_SIZE 16384
39
40 typedef struct AVIIndex {
41 int64_t indx_start;
42 int entry;
43 int ents_allocated;
44 AVIIentry** cluster;
45 } AVIIndex;
46
47 typedef struct {
48 int64_t riff_start, movi_list, odml_list;
49 int64_t frames_hdr_all;
50 int riff_id;
51 } AVIContext;
52
53 typedef struct {
54 int64_t frames_hdr_strm;
55 int audio_strm_length;
56 int packet_count;
57 int entry;
58
59 AVIIndex indexes;
60 } AVIStream;
61
62 static inline AVIIentry *avi_get_ientry(AVIIndex *idx, int ent_id)
63 {
64 int cl = ent_id / AVI_INDEX_CLUSTER_SIZE;
65 int id = ent_id % AVI_INDEX_CLUSTER_SIZE;
66 return &idx->cluster[cl][id];
67 }
68
69 static int64_t avi_start_new_riff(AVFormatContext *s, AVIOContext *pb,
70 const char *riff_tag, const char *list_tag)
71 {
72 AVIContext *avi = s->priv_data;
73 int64_t loff;
74 int i;
75
76 avi->riff_id++;
77 for (i = 0; i < s->nb_streams; i++) {
78 AVIStream *avist = s->streams[i]->priv_data;
79 avist->indexes.entry = 0;
80 }
81
82 avi->riff_start = ff_start_tag(pb, "RIFF");
83 ffio_wfourcc(pb, riff_tag);
84 loff = ff_start_tag(pb, "LIST");
85 ffio_wfourcc(pb, list_tag);
86 return loff;
87 }
88
89 static char *avi_stream2fourcc(char *tag, int index, enum AVMediaType type)
90 {
91 tag[0] = '0' + index / 10;
92 tag[1] = '0' + index % 10;
93 if (type == AVMEDIA_TYPE_VIDEO) {
94 tag[2] = 'd';
95 tag[3] = 'c';
96 } else if (type == AVMEDIA_TYPE_SUBTITLE) {
97 // note: this is not an official code
98 tag[2] = 's';
99 tag[3] = 'b';
100 } else {
101 tag[2] = 'w';
102 tag[3] = 'b';
103 }
104 tag[4] = '\0';
105 return tag;
106 }
107
108 static int avi_write_counters(AVFormatContext *s, int riff_id)
109 {
110 AVIOContext *pb = s->pb;
111 AVIContext *avi = s->priv_data;
112 int n, au_byterate, au_ssize, au_scale, nb_frames = 0;
113 int64_t file_size;
114 AVCodecContext *stream;
115
116 file_size = avio_tell(pb);
117 for (n = 0; n < s->nb_streams; n++) {
118 AVIStream *avist = s->streams[n]->priv_data;
119
120 assert(avist->frames_hdr_strm);
121 stream = s->streams[n]->codec;
122 avio_seek(pb, avist->frames_hdr_strm, SEEK_SET);
123 ff_parse_specific_params(s->streams[n], &au_byterate, &au_ssize, &au_scale);
124 if (au_ssize == 0)
125 avio_wl32(pb, avist->packet_count);
126 else
127 avio_wl32(pb, avist->audio_strm_length / au_ssize);
128 if (stream->codec_type == AVMEDIA_TYPE_VIDEO)
129 nb_frames = FFMAX(nb_frames, avist->packet_count);
130 }
131 if (riff_id == 1) {
132 assert(avi->frames_hdr_all);
133 avio_seek(pb, avi->frames_hdr_all, SEEK_SET);
134 avio_wl32(pb, nb_frames);
135 }
136 avio_seek(pb, file_size, SEEK_SET);
137
138 return 0;
139 }
140
141 static int avi_write_header(AVFormatContext *s)
142 {
143 AVIContext *avi = s->priv_data;
144 AVIOContext *pb = s->pb;
145 int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
146 AVCodecContext *video_enc;
147 int64_t list1, list2, strh, strf;
148 AVDictionaryEntry *t = NULL;
149
150 if (s->nb_streams > AVI_MAX_STREAM_COUNT) {
151 av_log(s, AV_LOG_ERROR, "AVI does not support >%d streams\n",
152 AVI_MAX_STREAM_COUNT);
153 return -1;
154 }
155
156 for (n = 0; n < s->nb_streams; n++) {
157 s->streams[n]->priv_data = av_mallocz(sizeof(AVIStream));
158 if (!s->streams[n]->priv_data)
159 return AVERROR(ENOMEM);
160 }
161
162 /* header list */
163 avi->riff_id = 0;
164 list1 = avi_start_new_riff(s, pb, "AVI ", "hdrl");
165
166 /* avi header */
167 ffio_wfourcc(pb, "avih");
168 avio_wl32(pb, 14 * 4);
169 bitrate = 0;
170
171 video_enc = NULL;
172 for (n = 0; n < s->nb_streams; n++) {
173 AVCodecContext *codec = s->streams[n]->codec;
174 bitrate += codec->bit_rate;
175 if (codec->codec_type == AVMEDIA_TYPE_VIDEO)
176 video_enc = codec;
177 }
178
179 nb_frames = 0;
180
181 if (video_enc)
182 avio_wl32(pb, (uint32_t) (INT64_C(1000000) * video_enc->time_base.num /
183 video_enc->time_base.den));
184 else
185 avio_wl32(pb, 0);
186 avio_wl32(pb, bitrate / 8); /* XXX: not quite exact */
187 avio_wl32(pb, 0); /* padding */
188 if (!pb->seekable)
189 avio_wl32(pb, AVIF_TRUSTCKTYPE | AVIF_ISINTERLEAVED); /* flags */
190 else
191 avio_wl32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */
192 avi->frames_hdr_all = avio_tell(pb); /* remember this offset to fill later */
193 avio_wl32(pb, nb_frames); /* nb frames, filled later */
194 avio_wl32(pb, 0); /* initial frame */
195 avio_wl32(pb, s->nb_streams); /* nb streams */
196 avio_wl32(pb, 1024 * 1024); /* suggested buffer size */
197 if (video_enc) {
198 avio_wl32(pb, video_enc->width);
199 avio_wl32(pb, video_enc->height);
200 } else {
201 avio_wl32(pb, 0);
202 avio_wl32(pb, 0);
203 }
204 avio_wl32(pb, 0); /* reserved */
205 avio_wl32(pb, 0); /* reserved */
206 avio_wl32(pb, 0); /* reserved */
207 avio_wl32(pb, 0); /* reserved */
208
209 /* stream list */
210 for (i = 0; i < n; i++) {
211 AVStream *st = s->streams[i];
212 AVCodecContext *enc = st->codec;
213 AVIStream *avist = st->priv_data;
214 list2 = ff_start_tag(pb, "LIST");
215 ffio_wfourcc(pb, "strl");
216
217 /* stream generic header */
218 strh = ff_start_tag(pb, "strh");
219 switch (enc->codec_type) {
220 case AVMEDIA_TYPE_SUBTITLE:
221 // XSUB subtitles behave like video tracks, other subtitles
222 // are not (yet) supported.
223 if (enc->codec_id != AV_CODEC_ID_XSUB) {
224 av_log(s, AV_LOG_ERROR,
225 "Subtitle streams other than DivX XSUB are not supported by the AVI muxer.\n");
226 return AVERROR_PATCHWELCOME;
227 }
228 case AVMEDIA_TYPE_VIDEO:
229 ffio_wfourcc(pb, "vids");
230 break;
231 case AVMEDIA_TYPE_AUDIO:
232 ffio_wfourcc(pb, "auds");
233 break;
234 // case AVMEDIA_TYPE_TEXT:
235 // ffio_wfourcc(pb, "txts");
236 // break;
237 case AVMEDIA_TYPE_DATA:
238 ffio_wfourcc(pb, "dats");
239 break;
240 }
241 if (enc->codec_type == AVMEDIA_TYPE_VIDEO ||
242 enc->codec_id == AV_CODEC_ID_XSUB)
243 avio_wl32(pb, enc->codec_tag);
244 else
245 avio_wl32(pb, 1);
246 avio_wl32(pb, 0); /* flags */
247 avio_wl16(pb, 0); /* priority */
248 avio_wl16(pb, 0); /* language */
249 avio_wl32(pb, 0); /* initial frame */
250
251 ff_parse_specific_params(st, &au_byterate, &au_ssize, &au_scale);
252
253 avio_wl32(pb, au_scale); /* scale */
254 avio_wl32(pb, au_byterate); /* rate */
255 avpriv_set_pts_info(st, 64, au_scale, au_byterate);
256
257 avio_wl32(pb, 0); /* start */
258 /* remember this offset to fill later */
259 avist->frames_hdr_strm = avio_tell(pb);
260 if (!pb->seekable)
261 /* FIXME: this may be broken, but who cares */
262 avio_wl32(pb, AVI_MAX_RIFF_SIZE);
263 else
264 avio_wl32(pb, 0); /* length, XXX: filled later */
265
266 /* suggested buffer size */ //FIXME set at the end to largest chunk
267 if (enc->codec_type == AVMEDIA_TYPE_VIDEO)
268 avio_wl32(pb, 1024 * 1024);
269 else if (enc->codec_type == AVMEDIA_TYPE_AUDIO)
270 avio_wl32(pb, 12 * 1024);
271 else
272 avio_wl32(pb, 0);
273 avio_wl32(pb, -1); /* quality */
274 avio_wl32(pb, au_ssize); /* sample size */
275 avio_wl32(pb, 0);
276 avio_wl16(pb, enc->width);
277 avio_wl16(pb, enc->height);
278 ff_end_tag(pb, strh);
279
280 if (enc->codec_type != AVMEDIA_TYPE_DATA) {
281 strf = ff_start_tag(pb, "strf");
282 switch (enc->codec_type) {
283 case AVMEDIA_TYPE_SUBTITLE:
284 /* XSUB subtitles behave like video tracks, other subtitles
285 * are not (yet) supported. */
286 if (enc->codec_id != AV_CODEC_ID_XSUB)
287 break;
288 case AVMEDIA_TYPE_VIDEO:
289 ff_put_bmp_header(pb, enc, ff_codec_bmp_tags, 0);
290 break;
291 case AVMEDIA_TYPE_AUDIO:
292 if (ff_put_wav_header(pb, enc) < 0)
293 return -1;
294 break;
295 default:
296 return -1;
297 }
298 ff_end_tag(pb, strf);
299 if ((t = av_dict_get(st->metadata, "title", NULL, 0))) {
300 ff_riff_write_info_tag(s->pb, "strn", t->value);
301 t = NULL;
302 }
303 }
304
305 if (pb->seekable) {
306 unsigned char tag[5];
307 int j;
308
309 /* Starting to lay out AVI OpenDML master index.
310 * We want to make it JUNK entry for now, since we'd
311 * like to get away without making AVI an OpenDML one
312 * for compatibility reasons. */
313 avist->indexes.entry = avist->indexes.ents_allocated = 0;
314 avist->indexes.indx_start = ff_start_tag(pb, "JUNK");
315 avio_wl16(pb, 4); /* wLongsPerEntry */
316 avio_w8(pb, 0); /* bIndexSubType (0 == frame index) */
317 avio_w8(pb, 0); /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */
318 avio_wl32(pb, 0); /* nEntriesInUse (will fill out later on) */
319 ffio_wfourcc(pb, avi_stream2fourcc(tag, i, enc->codec_type));
320 /* dwChunkId */
321 avio_wl64(pb, 0); /* dwReserved[3] */
322 // avio_wl32(pb, 0); /* Must be 0. */
323 for (j = 0; j < AVI_MASTER_INDEX_SIZE * 2; j++)
324 avio_wl64(pb, 0);
325 ff_end_tag(pb, avist->indexes.indx_start);
326 }
327
328 if (enc->codec_type == AVMEDIA_TYPE_VIDEO &&
329 st->sample_aspect_ratio.num > 0 &&
330 st->sample_aspect_ratio.den > 0) {
331 int vprp = ff_start_tag(pb, "vprp");
332 AVRational dar = av_mul_q(st->sample_aspect_ratio,
333 (AVRational) { enc->width,
334 enc->height });
335 int num, den;
336 av_reduce(&num, &den, dar.num, dar.den, 0xFFFF);
337
338 avio_wl32(pb, 0); // video format = unknown
339 avio_wl32(pb, 0); // video standard = unknown
340 avio_wl32(pb, lrintf(1.0 / av_q2d(enc->time_base)));
341 avio_wl32(pb, enc->width);
342 avio_wl32(pb, enc->height);
343 avio_wl16(pb, den);
344 avio_wl16(pb, num);
345 avio_wl32(pb, enc->width);
346 avio_wl32(pb, enc->height);
347 avio_wl32(pb, 1); // progressive FIXME
348
349 avio_wl32(pb, enc->height);
350 avio_wl32(pb, enc->width);
351 avio_wl32(pb, enc->height);
352 avio_wl32(pb, enc->width);
353 avio_wl32(pb, 0);
354 avio_wl32(pb, 0);
355
356 avio_wl32(pb, 0);
357 avio_wl32(pb, 0);
358 ff_end_tag(pb, vprp);
359 }
360
361 ff_end_tag(pb, list2);
362 }
363
364 if (pb->seekable) {
365 /* AVI could become an OpenDML one, if it grows beyond 2Gb range */
366 avi->odml_list = ff_start_tag(pb, "JUNK");
367 ffio_wfourcc(pb, "odml");
368 ffio_wfourcc(pb, "dmlh");
369 avio_wl32(pb, 248);
370 for (i = 0; i < 248; i += 4)
371 avio_wl32(pb, 0);
372 ff_end_tag(pb, avi->odml_list);
373 }
374
375 ff_end_tag(pb, list1);
376
377 ff_riff_write_info(s);
378
379 /* some padding for easier tag editing */
380 list2 = ff_start_tag(pb, "JUNK");
381 for (i = 0; i < 1016; i += 4)
382 avio_wl32(pb, 0);
383 ff_end_tag(pb, list2);
384
385 avi->movi_list = ff_start_tag(pb, "LIST");
386 ffio_wfourcc(pb, "movi");
387
388 avio_flush(pb);
389
390 return 0;
391 }
392
393 static int avi_write_ix(AVFormatContext *s)
394 {
395 AVIOContext *pb = s->pb;
396 AVIContext *avi = s->priv_data;
397 char tag[5];
398 char ix_tag[] = "ix00";
399 int i, j;
400
401 assert(pb->seekable);
402
403 if (avi->riff_id > AVI_MASTER_INDEX_SIZE)
404 return -1;
405
406 for (i = 0; i < s->nb_streams; i++) {
407 AVIStream *avist = s->streams[i]->priv_data;
408 int64_t ix, pos;
409
410 avi_stream2fourcc(tag, i, s->streams[i]->codec->codec_type);
411 ix_tag[3] = '0' + i;
412
413 /* Writing AVI OpenDML leaf index chunk */
414 ix = avio_tell(pb);
415 ffio_wfourcc(pb, ix_tag); /* ix?? */
416 avio_wl32(pb, avist->indexes.entry * 8 + 24);
417 /* chunk size */
418 avio_wl16(pb, 2); /* wLongsPerEntry */
419 avio_w8(pb, 0); /* bIndexSubType (0 == frame index) */
420 avio_w8(pb, 1); /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */
421 avio_wl32(pb, avist->indexes.entry);
422 /* nEntriesInUse */
423 ffio_wfourcc(pb, tag); /* dwChunkId */
424 avio_wl64(pb, avi->movi_list); /* qwBaseOffset */
425 avio_wl32(pb, 0); /* dwReserved_3 (must be 0) */
426
427 for (j = 0; j < avist->indexes.entry; j++) {
428 AVIIentry *ie = avi_get_ientry(&avist->indexes, j);
429 avio_wl32(pb, ie->pos + 8);
430 avio_wl32(pb, ((uint32_t) ie->len & ~0x80000000) |
431 (ie->flags & 0x10 ? 0 : 0x80000000));
432 }
433 avio_flush(pb);
434 pos = avio_tell(pb);
435
436 /* Updating one entry in the AVI OpenDML master index */
437 avio_seek(pb, avist->indexes.indx_start - 8, SEEK_SET);
438 ffio_wfourcc(pb, "indx"); /* enabling this entry */
439 avio_skip(pb, 8);
440 avio_wl32(pb, avi->riff_id); /* nEntriesInUse */
441 avio_skip(pb, 16 * avi->riff_id);
442 avio_wl64(pb, ix); /* qwOffset */
443 avio_wl32(pb, pos - ix); /* dwSize */
444 avio_wl32(pb, avist->indexes.entry); /* dwDuration */
445
446 avio_seek(pb, pos, SEEK_SET);
447 }
448 return 0;
449 }
450
451 static int avi_write_idx1(AVFormatContext *s)
452 {
453 AVIOContext *pb = s->pb;
454 AVIContext *avi = s->priv_data;
455 int64_t idx_chunk;
456 int i;
457 char tag[5];
458
459 if (pb->seekable) {
460 AVIStream *avist;
461 AVIIentry *ie = 0, *tie;
462 int empty, stream_id = -1;
463
464 idx_chunk = ff_start_tag(pb, "idx1");
465 for (i = 0; i < s->nb_streams; i++) {
466 avist = s->streams[i]->priv_data;
467 avist->entry = 0;
468 }
469
470 do {
471 empty = 1;
472 for (i = 0; i < s->nb_streams; i++) {
473 avist = s->streams[i]->priv_data;
474 if (avist->indexes.entry <= avist->entry)
475 continue;
476
477 tie = avi_get_ientry(&avist->indexes, avist->entry);
478 if (empty || tie->pos < ie->pos) {
479 ie = tie;
480 stream_id = i;
481 }
482 empty = 0;
483 }
484 if (!empty) {
485 avist = s->streams[stream_id]->priv_data;
486 avi_stream2fourcc(tag, stream_id,
487 s->streams[stream_id]->codec->codec_type);
488 ffio_wfourcc(pb, tag);
489 avio_wl32(pb, ie->flags);
490 avio_wl32(pb, ie->pos);
491 avio_wl32(pb, ie->len);
492 avist->entry++;
493 }
494 } while (!empty);
495 ff_end_tag(pb, idx_chunk);
496
497 avi_write_counters(s, avi->riff_id);
498 }
499 return 0;
500 }
501
502 static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
503 {
504 unsigned char tag[5];
505 unsigned int flags = 0;
506 const int stream_index = pkt->stream_index;
507 int size = pkt->size;
508 AVIContext *avi = s->priv_data;
509 AVIOContext *pb = s->pb;
510 AVIStream *avist = s->streams[stream_index]->priv_data;
511 AVCodecContext *enc = s->streams[stream_index]->codec;
512
513 while (enc->block_align == 0 && pkt->dts != AV_NOPTS_VALUE &&
514 pkt->dts > avist->packet_count) {
515 AVPacket empty_packet;
516
517 av_init_packet(&empty_packet);
518 empty_packet.size = 0;
519 empty_packet.data = NULL;
520 empty_packet.stream_index = stream_index;
521 avi_write_packet(s, &empty_packet);
522 }
523 avist->packet_count++;
524
525 // Make sure to put an OpenDML chunk when the file size exceeds the limits
526 if (pb->seekable &&
527 (avio_tell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE)) {
528 avi_write_ix(s);
529 ff_end_tag(pb, avi->movi_list);
530
531 if (avi->riff_id == 1)
532 avi_write_idx1(s);
533
534 ff_end_tag(pb, avi->riff_start);
535 avi->movi_list = avi_start_new_riff(s, pb, "AVIX", "movi");
536 }
537
538 avi_stream2fourcc(tag, stream_index, enc->codec_type);
539 if (pkt->flags & AV_PKT_FLAG_KEY)
540 flags = 0x10;
541 if (enc->codec_type == AVMEDIA_TYPE_AUDIO)
542 avist->audio_strm_length += size;
543
544 if (s->pb->seekable) {
545 int err;
546 AVIIndex *idx = &avist->indexes;
547 int cl = idx->entry / AVI_INDEX_CLUSTER_SIZE;
548 int id = idx->entry % AVI_INDEX_CLUSTER_SIZE;
549 if (idx->ents_allocated <= idx->entry) {
550 if ((err = av_reallocp(&idx->cluster,
551 (cl + 1) * sizeof(*idx->cluster))) < 0) {
552 idx->ents_allocated = 0;
553 idx->entry = 0;
554 return err;
555 }
556 idx->cluster[cl] =
557 av_malloc(AVI_INDEX_CLUSTER_SIZE * sizeof(AVIIentry));
558 if (!idx->cluster[cl])
559 return -1;
560 idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;
561 }
562
563 idx->cluster[cl][id].flags = flags;
564 idx->cluster[cl][id].pos = avio_tell(pb) - avi->movi_list;
565 idx->cluster[cl][id].len = size;
566 idx->entry++;
567 }
568
569 avio_write(pb, tag, 4);
570 avio_wl32(pb, size);
571 avio_write(pb, pkt->data, size);
572 if (size & 1)
573 avio_w8(pb, 0);
574
575 return 0;
576 }
577
578 static int avi_write_trailer(AVFormatContext *s)
579 {
580 AVIContext *avi = s->priv_data;
581 AVIOContext *pb = s->pb;
582 int res = 0;
583 int i, j, n, nb_frames;
584 int64_t file_size;
585
586 if (pb->seekable) {
587 if (avi->riff_id == 1) {
588 ff_end_tag(pb, avi->movi_list);
589 res = avi_write_idx1(s);
590 ff_end_tag(pb, avi->riff_start);
591 } else {
592 avi_write_ix(s);
593 ff_end_tag(pb, avi->movi_list);
594 ff_end_tag(pb, avi->riff_start);
595
596 file_size = avio_tell(pb);
597 avio_seek(pb, avi->odml_list - 8, SEEK_SET);
598 ffio_wfourcc(pb, "LIST"); /* Making this AVI OpenDML one */
599 avio_skip(pb, 16);
600
601 for (n = nb_frames = 0; n < s->nb_streams; n++) {
602 AVCodecContext *stream = s->streams[n]->codec;
603 AVIStream *avist = s->streams[n]->priv_data;
604
605 if (stream->codec_type == AVMEDIA_TYPE_VIDEO) {
606 if (nb_frames < avist->packet_count)
607 nb_frames = avist->packet_count;
608 } else {
609 if (stream->codec_id == AV_CODEC_ID_MP2 ||
610 stream->codec_id == AV_CODEC_ID_MP3)
611 nb_frames += avist->packet_count;
612 }
613 }
614 avio_wl32(pb, nb_frames);
615 avio_seek(pb, file_size, SEEK_SET);
616
617 avi_write_counters(s, avi->riff_id);
618 }
619 }
620
621 for (i = 0; i < s->nb_streams; i++) {
622 AVIStream *avist = s->streams[i]->priv_data;
623 for (j = 0; j < avist->indexes.ents_allocated / AVI_INDEX_CLUSTER_SIZE; j++)
624 av_free(avist->indexes.cluster[j]);
625 av_freep(&avist->indexes.cluster);
626 avist->indexes.ents_allocated = avist->indexes.entry = 0;
627 }
628
629 return res;
630 }
631
632 AVOutputFormat ff_avi_muxer = {
633 .name = "avi",
634 .long_name = NULL_IF_CONFIG_SMALL("AVI (Audio Video Interleaved)"),
635 .mime_type = "video/x-msvideo",
636 .extensions = "avi",
637 .priv_data_size = sizeof(AVIContext),
638 .audio_codec = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_AC3,
639 .video_codec = AV_CODEC_ID_MPEG4,
640 .write_header = avi_write_header,
641 .write_packet = avi_write_packet,
642 .write_trailer = avi_write_trailer,
643 .codec_tag = (const AVCodecTag * const []) {
644 ff_codec_bmp_tags, ff_codec_wav_tags, 0
645 },
646 };