cleanup mpeg1/2 bitstream parser
[libav.git] / libavformat / avienc.c
CommitLineData
de6d9b64
FB
1/*
2 * AVI encoder.
19720f15 3 * Copyright (c) 2000 Fabrice Bellard.
de6d9b64 4 *
19720f15
FB
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.
de6d9b64 9 *
19720f15 10 * This library is distributed in the hope that it will be useful,
de6d9b64 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19720f15
FB
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
de6d9b64 14 *
19720f15
FB
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
de6d9b64 18 */
de6d9b64
FB
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
27typedef struct AVIIndex {
28 unsigned char tag[4];
29 unsigned int flags, pos, len;
30 struct AVIIndex *next;
31} AVIIndex;
32
33typedef struct {
ce9fce63
RS
34 offset_t riff_start, movi_list, odml_list;
35 offset_t frames_hdr_all, frames_hdr_strm[MAX_STREAMS];
86bec9a1 36 int audio_strm_length[MAX_STREAMS];
de6d9b64
FB
37 AVIIndex *first, *last;
38} AVIContext;
39
0570bf06 40offset_t start_tag(ByteIOContext *pb, const char *tag)
de6d9b64
FB
41{
42 put_tag(pb, tag);
43 put_le32(pb, 0);
44 return url_ftell(pb);
45}
46
47void end_tag(ByteIOContext *pb, offset_t start)
48{
49 offset_t pos;
50
51 pos = url_ftell(pb);
52 url_fseek(pb, start - 4, SEEK_SET);
0c1a9eda 53 put_le32(pb, (uint32_t)(pos - start));
de6d9b64
FB
54 url_fseek(pb, pos, SEEK_SET);
55}
56
57/* Note: when encoding, the first matching tag is used, so order is
58 important if multiple tags possible for a given codec. */
0570bf06 59const CodecTag codec_bmp_tags[] = {
95c79a24
J
60 { CODEC_ID_H263, MKTAG('H', '2', '6', '3') },
61 { CODEC_ID_H263P, MKTAG('H', '2', '6', '3') },
de6d9b64 62 { CODEC_ID_H263I, MKTAG('I', '2', '6', '3') }, /* intel h263 */
a05c8d71
MN
63
64 /* added based on MPlayer */
65 { CODEC_ID_H263I, MKTAG('i', '2', '6', '3') },
66 { CODEC_ID_H263P, MKTAG('U', '2', '6', '3') },
67 { CODEC_ID_H263P, MKTAG('h', '2', '6', '3') },
68 { CODEC_ID_H263P, MKTAG('v', 'i', 'v', '1') },
69
de6d9b64 70 { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
b1d89f82
MR
71 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X'), .invalid_asf = 1 },
72 { CODEC_ID_MPEG4, MKTAG('d', 'i', 'v', 'x'), .invalid_asf = 1 },
73 { CODEC_ID_MPEG4, MKTAG('D', 'X', '5', '0'), .invalid_asf = 1 },
74 { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D'), .invalid_asf = 1 },
75 { CODEC_ID_MPEG4, MKTAG('x', 'v', 'i', 'd'), .invalid_asf = 1 },
76 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 's'), .invalid_asf = 1 },
390dffc5
MN
77 { CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
78 { CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
79 { CODEC_ID_MPEG4, MKTAG('m', '4', 's', '2') },
58f26ba9 80 { CODEC_ID_MPEG4, MKTAG(0x04, 0, 0, 0) }, /* some broken avi use this */
a05c8d71
MN
81
82 /* added based on MPlayer */
83 { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', '1') },
84 { CODEC_ID_MPEG4, MKTAG('d', 'i', 'v', '1') },
85 { CODEC_ID_MPEG4, MKTAG('X', 'v', 'i', 'D') },
86 { CODEC_ID_MPEG4, MKTAG('B', 'L', 'Z', '0') },
87 { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
88 { CODEC_ID_MPEG4, MKTAG('U', 'M', 'P', '4') },
89
b1d89f82 90 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '3'), .invalid_asf = 1 }, /* default signature when using MSMPEG4 */
8a555875 91 { CODEC_ID_MSMPEG4V3, MKTAG('d', 'i', 'v', '3'), .invalid_asf = 1 },
bb3debab 92 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
a05c8d71
MN
93
94 /* added based on MPlayer */
95 { CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', 'G', '3') },
96 { CODEC_ID_MSMPEG4V3, MKTAG('m', 'p', 'g', '3') },
97 { CODEC_ID_MSMPEG4V3, MKTAG('m', 'p', '4', '3') },
98 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '5') },
99 { CODEC_ID_MSMPEG4V3, MKTAG('d', 'i', 'v', '5') },
100 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '6') },
101 { CODEC_ID_MSMPEG4V3, MKTAG('d', 'i', 'v', '6') },
102 { CODEC_ID_MSMPEG4V3, MKTAG('D', 'I', 'V', '4') },
103 { CODEC_ID_MSMPEG4V3, MKTAG('d', 'i', 'v', '4') },
104 { CODEC_ID_MSMPEG4V3, MKTAG('A', 'P', '4', '1') },
105 { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '1') },
106 { CODEC_ID_MSMPEG4V3, MKTAG('c', 'o', 'l', '1') },
107 { CODEC_ID_MSMPEG4V3, MKTAG('C', 'O', 'L', '0') },
108 { CODEC_ID_MSMPEG4V3, MKTAG('c', 'o', 'l', '0') },
109
bb3debab 110 { CODEC_ID_MSMPEG4V2, MKTAG('M', 'P', '4', '2') },
a05c8d71
MN
111
112 /* added based on MPlayer */
113 { CODEC_ID_MSMPEG4V2, MKTAG('D', 'I', 'V', '2') },
114 { CODEC_ID_MSMPEG4V2, MKTAG('d', 'i', 'v', '2') },
115 { CODEC_ID_MSMPEG4V2, MKTAG('m', 'p', '4', '2') },
116
9b030d9d 117 { CODEC_ID_MSMPEG4V1, MKTAG('M', 'P', 'G', '4') },
a05c8d71
MN
118
119 /* added based on MPlayer */
120 { CODEC_ID_MSMPEG4V1, MKTAG('D', 'I', 'V', '4') },
121 { CODEC_ID_MSMPEG4V1, MKTAG('d', 'i', 'v', '4') },
122 { CODEC_ID_MSMPEG4V1, MKTAG('m', 'p', 'g', '4') },
123
9b030d9d 124 { CODEC_ID_WMV1, MKTAG('W', 'M', 'V', '1') },
a05c8d71
MN
125
126 /* added based on MPlayer */
127 { CODEC_ID_WMV1, MKTAG('w', 'm', 'v', '1') },
128
e23d5712 129 { CODEC_ID_WMV2, MKTAG('W', 'M', 'V', '2') },
020fcc94 130 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd') },
f20dca40 131 { CODEC_ID_DVVIDEO, MKTAG('D', 'V', 'S', 'D') },
020fcc94 132 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'd') },
ce9fce63
RS
133 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'l') },
134 { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '2', '5') },
1cbc2890
FB
135 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '1') },
136 { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'g', '2') },
137 { CODEC_ID_MPEG1VIDEO, MKTAG('P', 'I', 'M', '1') },
bb15f7fd 138 { CODEC_ID_MJPEG, MKTAG('M', 'J', 'P', 'G') },
f560dd82
MN
139 { CODEC_ID_HUFFYUV, MKTAG('H', 'F', 'Y', 'U') },
140 { CODEC_ID_HUFFYUV, MKTAG('h', 'f', 'y', 'u') },
1e711bd6
MM
141 { CODEC_ID_CYUV, MKTAG('C', 'Y', 'U', 'V') },
142 { CODEC_ID_CYUV, MKTAG('c', 'y', 'u', 'v') },
e8750b00 143 { CODEC_ID_RAWVIDEO, MKTAG('Y', '4', '2', '2') },
e8b478c1 144 { CODEC_ID_RAWVIDEO, MKTAG('I', '4', '2', '0') },
deabd4fd
MM
145 { CODEC_ID_INDEO3, MKTAG('i', 'v', '3', '1') },
146 { CODEC_ID_INDEO3, MKTAG('i', 'v', '3', '2') },
147 { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '1') },
148 { CODEC_ID_INDEO3, MKTAG('I', 'V', '3', '2') },
de6d9b64
FB
149 { 0, 0 },
150};
151
a266644f 152unsigned int codec_get_tag(const CodecTag *tags, int id)
de6d9b64
FB
153{
154 while (tags->id != 0) {
155 if (tags->id == id)
156 return tags->tag;
157 tags++;
158 }
159 return 0;
160}
161
2727c35e
PG
162static unsigned int codec_get_asf_tag(const CodecTag *tags, int id)
163{
164 while (tags->id != 0) {
165 if (!tags->invalid_asf && tags->id == id)
166 return tags->tag;
167 tags++;
168 }
169 return 0;
170}
171
a266644f 172int codec_get_id(const CodecTag *tags, unsigned int tag)
de6d9b64
FB
173{
174 while (tags->id != 0) {
175 if (tags->tag == tag)
176 return tags->id;
177 tags++;
178 }
179 return 0;
180}
181
182unsigned int codec_get_bmp_tag(int id)
183{
184 return codec_get_tag(codec_bmp_tags, id);
185}
186
187/* BITMAPINFOHEADER header */
0570bf06 188void put_bmp_header(ByteIOContext *pb, AVCodecContext *enc, const CodecTag *tags, int for_asf)
de6d9b64 189{
952c69c4 190 put_le32(pb, 40 + enc->extradata_size); /* size */
de6d9b64
FB
191 put_le32(pb, enc->width);
192 put_le32(pb, enc->height);
193 put_le16(pb, 1); /* planes */
952c69c4
MN
194
195 put_le16(pb, enc->bits_per_sample ? enc->bits_per_sample : 24); /* depth */
de6d9b64 196 /* compression type */
2727c35e 197 put_le32(pb, for_asf ? codec_get_asf_tag(tags, enc->codec_id) : codec_get_tag(tags, enc->codec_id));
de6d9b64
FB
198 put_le32(pb, enc->width * enc->height * 3);
199 put_le32(pb, 0);
200 put_le32(pb, 0);
201 put_le32(pb, 0);
202 put_le32(pb, 0);
952c69c4
MN
203
204 put_buffer(pb, enc->extradata, enc->extradata_size);
205
206 if (enc->extradata_size & 1)
207 put_byte(pb, 0);
de6d9b64
FB
208}
209
0570bf06 210static void parse_specific_params(AVCodecContext *stream, int *au_byterate, int *au_ssize, int *au_scale)
86bec9a1
J
211{
212 switch(stream->codec_id) {
213 case CODEC_ID_PCM_S16LE:
214 *au_scale = *au_ssize = 2*stream->channels;
215 *au_byterate = *au_ssize * stream->sample_rate;
216 break;
217 case CODEC_ID_PCM_U8:
218 case CODEC_ID_PCM_ALAW:
219 case CODEC_ID_PCM_MULAW:
220 *au_scale = *au_ssize = stream->channels;
221 *au_byterate = *au_ssize * stream->sample_rate;
222 break;
223 case CODEC_ID_MP2:
224 *au_ssize = 1;
225 *au_scale = 1;
226 *au_byterate = stream->bit_rate / 8;
5798368b
J
227 case CODEC_ID_MP3LAME:
228 *au_ssize = 1;
229 *au_scale = 1;
230 *au_byterate = stream->bit_rate / 8;
86bec9a1
J
231 default:
232 *au_ssize = 1;
233 *au_scale = 1;
234 *au_byterate = stream->bit_rate / 8;
235 break;
236 }
237}
238
ce9fce63
RS
239static offset_t avi_start_new_riff(AVIContext *avi, ByteIOContext *pb,
240 const char* riff_tag, const char* list_tag)
241{
242 offset_t loff;
243 avi->riff_start = start_tag(pb, "RIFF");
244 put_tag(pb, riff_tag);
245 loff = start_tag(pb, "LIST");
246 put_tag(pb, list_tag);
247 return loff;
248}
249
de6d9b64
FB
250static int avi_write_header(AVFormatContext *s)
251{
c9a65ca8 252 AVIContext *avi = s->priv_data;
de6d9b64 253 ByteIOContext *pb = &s->pb;
86bec9a1 254 int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
de6d9b64
FB
255 AVCodecContext *stream, *video_enc;
256 offset_t list1, list2, strh, strf;
257
de6d9b64 258 /* header list */
ce9fce63 259 list1 = avi_start_new_riff(avi, pb, "AVI ", "hdrl");
de6d9b64
FB
260
261 /* avi header */
262 put_tag(pb, "avih");
263 put_le32(pb, 14 * 4);
264 bitrate = 0;
265
266 video_enc = NULL;
267 for(n=0;n<s->nb_streams;n++) {
268 stream = &s->streams[n]->codec;
269 bitrate += stream->bit_rate;
270 if (stream->codec_type == CODEC_TYPE_VIDEO)
271 video_enc = stream;
272 }
273
de6d9b64
FB
274 nb_frames = 0;
275
850742d7 276 if(video_enc){
14bea432 277 put_le32(pb, (uint32_t)(int64_t_C(1000000) * video_enc->frame_rate_base / video_enc->frame_rate));
850742d7
AR
278 } else {
279 put_le32(pb, 0);
280 }
de6d9b64
FB
281 put_le32(pb, bitrate / 8); /* XXX: not quite exact */
282 put_le32(pb, 0); /* padding */
283 put_le32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */
86bec9a1 284 avi->frames_hdr_all = url_ftell(pb); /* remember this offset to fill later */
de6d9b64
FB
285 put_le32(pb, nb_frames); /* nb frames, filled later */
286 put_le32(pb, 0); /* initial frame */
287 put_le32(pb, s->nb_streams); /* nb streams */
288 put_le32(pb, 1024 * 1024); /* suggested buffer size */
850742d7 289 if(video_enc){
de6d9b64
FB
290 put_le32(pb, video_enc->width);
291 put_le32(pb, video_enc->height);
850742d7
AR
292 } else {
293 put_le32(pb, 0);
294 put_le32(pb, 0);
295 }
de6d9b64
FB
296 put_le32(pb, 0); /* reserved */
297 put_le32(pb, 0); /* reserved */
298 put_le32(pb, 0); /* reserved */
299 put_le32(pb, 0); /* reserved */
300
301 /* stream list */
302 for(i=0;i<n;i++) {
303 list2 = start_tag(pb, "LIST");
304 put_tag(pb, "strl");
305
306 stream = &s->streams[i]->codec;
307
e8750b00
FR
308 /* FourCC should really be set by the codec itself */
309 if (! stream->codec_tag) {
310 stream->codec_tag = codec_get_bmp_tag(stream->codec_id);
311 }
312
de6d9b64
FB
313 /* stream generic header */
314 strh = start_tag(pb, "strh");
315 switch(stream->codec_type) {
316 case CODEC_TYPE_VIDEO:
317 put_tag(pb, "vids");
e8750b00 318 put_le32(pb, stream->codec_tag);
de6d9b64
FB
319 put_le32(pb, 0); /* flags */
320 put_le16(pb, 0); /* priority */
321 put_le16(pb, 0); /* language */
322 put_le32(pb, 0); /* initial frame */
b559b29b 323
14bea432
MN
324 put_le32(pb, stream->frame_rate_base); /* scale */
325 put_le32(pb, stream->frame_rate); /* rate */
b559b29b 326
de6d9b64 327 put_le32(pb, 0); /* start */
86bec9a1 328 avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
de6d9b64
FB
329 put_le32(pb, nb_frames); /* length, XXX: fill later */
330 put_le32(pb, 1024 * 1024); /* suggested buffer size */
86bec9a1 331 put_le32(pb, -1); /* quality */
de6d9b64
FB
332 put_le32(pb, stream->width * stream->height * 3); /* sample size */
333 put_le16(pb, 0);
334 put_le16(pb, 0);
335 put_le16(pb, stream->width);
336 put_le16(pb, stream->height);
337 break;
338 case CODEC_TYPE_AUDIO:
339 put_tag(pb, "auds");
86bec9a1 340 put_le32(pb, 1); /* tag */
de6d9b64
FB
341 put_le32(pb, 0); /* flags */
342 put_le16(pb, 0); /* priority */
343 put_le16(pb, 0); /* language */
344 put_le32(pb, 0); /* initial frame */
86bec9a1
J
345 parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
346 put_le32(pb, au_scale); /* scale */
347 put_le32(pb, au_byterate); /* rate */
de6d9b64 348 put_le32(pb, 0); /* start */
86bec9a1 349 avi->frames_hdr_strm[i] = url_ftell(pb); /* remember this offset to fill later */
de6d9b64
FB
350 put_le32(pb, 0); /* length, XXX: filled later */
351 put_le32(pb, 12 * 1024); /* suggested buffer size */
352 put_le32(pb, -1); /* quality */
86bec9a1 353 put_le32(pb, au_ssize); /* sample size */
de6d9b64
FB
354 put_le32(pb, 0);
355 put_le32(pb, 0);
356 break;
53cafac0 357 default:
42343f7e 358 av_abort();
de6d9b64
FB
359 }
360 end_tag(pb, strh);
361
362 strf = start_tag(pb, "strf");
363 switch(stream->codec_type) {
364 case CODEC_TYPE_VIDEO:
2727c35e 365 put_bmp_header(pb, stream, codec_bmp_tags, 0);
de6d9b64
FB
366 break;
367 case CODEC_TYPE_AUDIO:
46a3d068 368 if (put_wav_header(pb, stream) < 0) {
1ea4f593 369 av_free(avi);
46a3d068
FB
370 return -1;
371 }
de6d9b64 372 break;
53cafac0 373 default:
42343f7e 374 av_abort();
de6d9b64
FB
375 }
376 end_tag(pb, strf);
377 end_tag(pb, list2);
378 }
ce9fce63
RS
379
380 /* AVI could become an OpenDML one, if it grows beyond 2Gb range */
381 avi->odml_list = start_tag(pb, "JUNK");
382 put_tag(pb, "odml");
383 put_tag(pb, "dmlh");
384 put_le32(pb, 248);
d86852d1
PG
385 for (i = 0; i < 248; i+= 4)
386 put_le32(pb, 0);
ce9fce63 387 end_tag(pb, avi->odml_list);
de6d9b64
FB
388
389 end_tag(pb, list1);
390
391 avi->movi_list = start_tag(pb, "LIST");
392 avi->first = NULL;
393 avi->last = NULL;
394 put_tag(pb, "movi");
395
396 put_flush_packet(pb);
397
398 return 0;
399}
400
ce9fce63
RS
401static int avi_finish_riff1(AVFormatContext *s)
402{
403 ByteIOContext *pb = &s->pb;
404 AVIContext *avi = s->priv_data;
405 offset_t file_size, idx_chunk;
406 int n, nb_frames, au_byterate, au_ssize, au_scale;
407 AVCodecContext *stream;
408 AVIIndex *idx;
409
410 if (!url_is_streamed(pb)) {
411 end_tag(pb, avi->movi_list);
412
413 idx_chunk = start_tag(pb, "idx1");
414 idx = avi->first;
415 while (idx != NULL) {
416 put_buffer(pb, idx->tag, 4);
417 put_le32(pb, idx->flags);
418 put_le32(pb, idx->pos);
419 put_le32(pb, idx->len);
420 idx = idx->next;
421 }
422 end_tag(pb, idx_chunk);
423
424 /* update file size */
425 file_size = url_ftell(pb);
426 end_tag(pb, avi->riff_start);
427
428 /* Fill in frame/sample counters */
429 nb_frames = 0;
430 for(n=0;n<s->nb_streams;n++) {
431 if (avi->frames_hdr_strm[n] != 0) {
432 stream = &s->streams[n]->codec;
433 url_fseek(pb, avi->frames_hdr_strm[n], SEEK_SET);
434 if (stream->codec_type == CODEC_TYPE_VIDEO) {
435 put_le32(pb, stream->frame_number);
436 if (nb_frames < stream->frame_number)
437 nb_frames = stream->frame_number;
438 } else {
439 if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3LAME) {
440 put_le32(pb, stream->frame_number);
441 nb_frames += stream->frame_number;
442 } else {
443 parse_specific_params(stream, &au_byterate, &au_ssize, &au_scale);
444 put_le32(pb, avi->audio_strm_length[n] / au_ssize);
445 }
446 }
447 }
448 }
449 if (avi->frames_hdr_all != 0) {
450 url_fseek(pb, avi->frames_hdr_all, SEEK_SET);
451 put_le32(pb, nb_frames);
452 }
453 url_fseek(pb, file_size, SEEK_SET);
454 }
455 return 0;
456}
457
de6d9b64 458static int avi_write_packet(AVFormatContext *s, int stream_index,
0c1a9eda 459 uint8_t *buf, int size, int force_pts)
de6d9b64
FB
460{
461 AVIContext *avi = s->priv_data;
462 ByteIOContext *pb = &s->pb;
463 AVIIndex *idx;
464 unsigned char tag[5];
465 unsigned int flags;
466 AVCodecContext *enc;
ce9fce63
RS
467
468 if (url_ftell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE) {
469 if (avi->riff_start != 8) {
470 end_tag(pb, avi->movi_list);
471 end_tag(pb, avi->riff_start);
472 } else
473 avi_finish_riff1(s);
474
475 avi->movi_list = avi_start_new_riff(avi, pb, "AVIX", "movi");
476 }
de6d9b64
FB
477
478 enc = &s->streams[stream_index]->codec;
479
480 tag[0] = '0';
481 tag[1] = '0' + stream_index;
482 if (enc->codec_type == CODEC_TYPE_VIDEO) {
483 tag[2] = 'd';
484 tag[3] = 'c';
492cd3a9 485 flags = enc->coded_frame->key_frame ? 0x10 : 0x00;
de6d9b64
FB
486 } else {
487 tag[2] = 'w';
488 tag[3] = 'b';
489 flags = 0x10;
490 }
86bec9a1
J
491 if (enc->codec_type == CODEC_TYPE_AUDIO)
492 avi->audio_strm_length[stream_index] += size;
de6d9b64
FB
493
494 if (!url_is_streamed(&s->pb)) {
1ea4f593 495 idx = av_malloc(sizeof(AVIIndex));
de6d9b64
FB
496 memcpy(idx->tag, tag, 4);
497 idx->flags = flags;
498 idx->pos = url_ftell(pb) - avi->movi_list;
499 idx->len = size;
500 idx->next = NULL;
501 if (!avi->last)
502 avi->first = idx;
503 else
504 avi->last->next = idx;
505 avi->last = idx;
506 }
507
508 put_buffer(pb, tag, 4);
509 put_le32(pb, size);
510 put_buffer(pb, buf, size);
511 if (size & 1)
512 put_byte(pb, 0);
513
514 put_flush_packet(pb);
515 return 0;
516}
517
518static int avi_write_trailer(AVFormatContext *s)
519{
de6d9b64 520 AVIContext *avi = s->priv_data;
ce9fce63
RS
521 ByteIOContext *pb = &s->pb;
522 int res = 0;
de6d9b64 523
ce9fce63
RS
524 if (avi->riff_start != 8) {
525 int n, nb_frames;
526 offset_t file_size;
527
de6d9b64 528 file_size = url_ftell(pb);
ce9fce63
RS
529 url_fseek(pb, avi->odml_list - 8, SEEK_SET);
530 put_tag(pb, "LIST"); /* Making this AVI OpenDML one */
531 url_fskip(pb, 16);
532
533 for (n=nb_frames=0;n<s->nb_streams;n++) {
534 AVCodecContext *stream = &s->streams[n]->codec;
535 if (stream->codec_type == CODEC_TYPE_VIDEO) {
536 if (nb_frames < stream->frame_number)
537 nb_frames = stream->frame_number;
538 } else {
539 if (stream->codec_id == CODEC_ID_MP2 || stream->codec_id == CODEC_ID_MP3LAME) {
540 nb_frames += stream->frame_number;
86bec9a1
J
541 }
542 }
ce9fce63
RS
543 }
544 put_le32(pb, nb_frames);
545
546 end_tag(pb, avi->movi_list);
547 end_tag(pb, avi->riff_start);
548 url_fseek(pb, file_size, SEEK_SET);
549 } else
550 res = avi_finish_riff1(s);
551
de6d9b64 552 put_flush_packet(pb);
ce9fce63 553 return res;
de6d9b64
FB
554}
555
c9a65ca8 556static AVOutputFormat avi_oformat = {
de6d9b64
FB
557 "avi",
558 "avi format",
559 "video/x-msvideo",
560 "avi",
c9a65ca8 561 sizeof(AVIContext),
de6d9b64 562 CODEC_ID_MP2,
22cf0455 563 CODEC_ID_MPEG4,
de6d9b64
FB
564 avi_write_header,
565 avi_write_packet,
566 avi_write_trailer,
de6d9b64 567};
c9a65ca8
FB
568
569int avienc_init(void)
570{
571 av_register_output_format(&avi_oformat);
572 return 0;
573}