3 * Copyright (c) 2000 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg 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.
12 * FFmpeg 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.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 #include "avio_internal.h"
30 #include "libavformat/avlanguage.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/intreadwrite.h"
33 #include "libavutil/dict.h"
34 #include "libavutil/avassert.h"
35 #include "libavutil/timestamp.h"
36 #include "libavutil/pixdesc.h"
37 #include "libavcodec/raw.h"
41 * - fill all fields if non streamed (nb_frames for example)
44 typedef struct AVIIentry
{
45 unsigned int flags
, pos
, len
;
48 #define AVI_INDEX_CLUSTER_SIZE 16384
50 typedef struct AVIIndex
{
58 int64_t riff_start
, movi_list
, odml_list
;
59 int64_t frames_hdr_all
;
64 int64_t frames_hdr_strm
;
65 int64_t audio_strm_length
;
75 static int avi_write_packet(AVFormatContext
*s
, AVPacket
*pkt
);
77 static inline AVIIentry
*avi_get_ientry(const AVIIndex
*idx
, int ent_id
)
79 int cl
= ent_id
/ AVI_INDEX_CLUSTER_SIZE
;
80 int id
= ent_id
% AVI_INDEX_CLUSTER_SIZE
;
81 return &idx
->cluster
[cl
][id
];
84 static int64_t avi_start_new_riff(AVFormatContext
*s
, AVIOContext
*pb
,
85 const char *riff_tag
, const char *list_tag
)
87 AVIContext
*avi
= s
->priv_data
;
92 for (i
= 0; i
< s
->nb_streams
; i
++) {
93 AVIStream
*avist
= s
->streams
[i
]->priv_data
;
94 avist
->indexes
.entry
= 0;
97 avi
->riff_start
= ff_start_tag(pb
, "RIFF");
98 ffio_wfourcc(pb
, riff_tag
);
99 loff
= ff_start_tag(pb
, "LIST");
100 ffio_wfourcc(pb
, list_tag
);
104 static char *avi_stream2fourcc(char *tag
, int index
, enum AVMediaType type
)
106 tag
[0] = '0' + index
/ 10;
107 tag
[1] = '0' + index
% 10;
108 if (type
== AVMEDIA_TYPE_VIDEO
) {
111 } else if (type
== AVMEDIA_TYPE_SUBTITLE
) {
112 // note: this is not an official code
123 static int avi_write_counters(AVFormatContext
*s
, int riff_id
)
125 AVIOContext
*pb
= s
->pb
;
126 AVIContext
*avi
= s
->priv_data
;
127 int n
, au_byterate
, au_ssize
, au_scale
, nb_frames
= 0;
129 AVCodecContext
*stream
;
131 file_size
= avio_tell(pb
);
132 for (n
= 0; n
< s
->nb_streams
; n
++) {
133 AVIStream
*avist
= s
->streams
[n
]->priv_data
;
135 av_assert0(avist
->frames_hdr_strm
);
136 stream
= s
->streams
[n
]->codec
;
137 avio_seek(pb
, avist
->frames_hdr_strm
, SEEK_SET
);
138 ff_parse_specific_params(s
->streams
[n
], &au_byterate
, &au_ssize
, &au_scale
);
140 avio_wl32(pb
, avist
->packet_count
);
142 avio_wl32(pb
, avist
->audio_strm_length
/ au_ssize
);
143 if (stream
->codec_type
== AVMEDIA_TYPE_VIDEO
)
144 nb_frames
= FFMAX(nb_frames
, avist
->packet_count
);
147 av_assert0(avi
->frames_hdr_all
);
148 avio_seek(pb
, avi
->frames_hdr_all
, SEEK_SET
);
149 avio_wl32(pb
, nb_frames
);
151 avio_seek(pb
, file_size
, SEEK_SET
);
156 static int avi_write_header(AVFormatContext
*s
)
158 AVIContext
*avi
= s
->priv_data
;
159 AVIOContext
*pb
= s
->pb
;
160 int bitrate
, n
, i
, nb_frames
, au_byterate
, au_ssize
, au_scale
;
161 AVCodecContext
*video_enc
;
162 AVStream
*video_st
= NULL
;
163 int64_t list1
, list2
, strh
, strf
;
164 AVDictionaryEntry
*t
= NULL
;
167 if (s
->nb_streams
> AVI_MAX_STREAM_COUNT
) {
168 av_log(s
, AV_LOG_ERROR
, "AVI does not support >%d streams\n",
169 AVI_MAX_STREAM_COUNT
);
170 return AVERROR(EINVAL
);
173 for (n
= 0; n
< s
->nb_streams
; n
++) {
174 s
->streams
[n
]->priv_data
= av_mallocz(sizeof(AVIStream
));
175 if (!s
->streams
[n
]->priv_data
)
176 return AVERROR(ENOMEM
);
181 list1
= avi_start_new_riff(s
, pb
, "AVI ", "hdrl");
184 ffio_wfourcc(pb
, "avih");
185 avio_wl32(pb
, 14 * 4);
189 for (n
= 0; n
< s
->nb_streams
; n
++) {
190 AVCodecContext
*codec
= s
->streams
[n
]->codec
;
191 bitrate
+= codec
->bit_rate
;
192 if (codec
->codec_type
== AVMEDIA_TYPE_VIDEO
) {
194 video_st
= s
->streams
[n
];
200 // TODO: should be avg_frame_rate
202 avio_wl32(pb
, (uint32_t) (INT64_C(1000000) * video_st
->time_base
.num
/
203 video_st
->time_base
.den
));
206 avio_wl32(pb
, bitrate
/ 8); /* XXX: not quite exact */
207 avio_wl32(pb
, 0); /* padding */
209 avio_wl32(pb
, AVIF_TRUSTCKTYPE
| AVIF_ISINTERLEAVED
); /* flags */
211 avio_wl32(pb
, AVIF_TRUSTCKTYPE
| AVIF_HASINDEX
| AVIF_ISINTERLEAVED
); /* flags */
212 avi
->frames_hdr_all
= avio_tell(pb
); /* remember this offset to fill later */
213 avio_wl32(pb
, nb_frames
); /* nb frames, filled later */
214 avio_wl32(pb
, 0); /* initial frame */
215 avio_wl32(pb
, s
->nb_streams
); /* nb streams */
216 avio_wl32(pb
, 1024 * 1024); /* suggested buffer size */
218 avio_wl32(pb
, video_enc
->width
);
219 avio_wl32(pb
, video_enc
->height
);
224 avio_wl32(pb
, 0); /* reserved */
225 avio_wl32(pb
, 0); /* reserved */
226 avio_wl32(pb
, 0); /* reserved */
227 avio_wl32(pb
, 0); /* reserved */
230 for (i
= 0; i
< n
; i
++) {
231 AVStream
*st
= s
->streams
[i
];
232 AVCodecContext
*enc
= st
->codec
;
233 AVIStream
*avist
= st
->priv_data
;
234 list2
= ff_start_tag(pb
, "LIST");
235 ffio_wfourcc(pb
, "strl");
237 /* stream generic header */
238 strh
= ff_start_tag(pb
, "strh");
239 switch (enc
->codec_type
) {
240 case AVMEDIA_TYPE_SUBTITLE
:
241 // XSUB subtitles behave like video tracks, other subtitles
242 // are not (yet) supported.
243 if (enc
->codec_id
!= AV_CODEC_ID_XSUB
) {
244 av_log(s
, AV_LOG_ERROR
,
245 "Subtitle streams other than DivX XSUB are not supported by the AVI muxer.\n");
246 return AVERROR_PATCHWELCOME
;
248 case AVMEDIA_TYPE_VIDEO
:
249 ffio_wfourcc(pb
, "vids");
251 case AVMEDIA_TYPE_AUDIO
:
252 ffio_wfourcc(pb
, "auds");
254 // case AVMEDIA_TYPE_TEXT:
255 // ffio_wfourcc(pb, "txts");
257 case AVMEDIA_TYPE_DATA
:
258 ffio_wfourcc(pb
, "dats");
261 if (enc
->codec_type
== AVMEDIA_TYPE_VIDEO
||
262 enc
->codec_id
== AV_CODEC_ID_XSUB
)
263 avio_wl32(pb
, enc
->codec_tag
);
266 avio_wl32(pb
, 0); /* flags */
267 avio_wl16(pb
, 0); /* priority */
268 avio_wl16(pb
, 0); /* language */
269 avio_wl32(pb
, 0); /* initial frame */
271 ff_parse_specific_params(st
, &au_byterate
, &au_ssize
, &au_scale
);
273 if ( enc
->codec_type
== AVMEDIA_TYPE_VIDEO
274 && enc
->codec_id
!= AV_CODEC_ID_XSUB
275 && au_byterate
> 1000LL*au_scale
) {
279 avpriv_set_pts_info(st
, 64, au_scale
, au_byterate
);
280 if (enc
->codec_id
== AV_CODEC_ID_XSUB
)
281 au_scale
= au_byterate
= 0;
283 avio_wl32(pb
, au_scale
); /* scale */
284 avio_wl32(pb
, au_byterate
); /* rate */
286 avio_wl32(pb
, 0); /* start */
287 /* remember this offset to fill later */
288 avist
->frames_hdr_strm
= avio_tell(pb
);
290 /* FIXME: this may be broken, but who cares */
291 avio_wl32(pb
, AVI_MAX_RIFF_SIZE
);
293 avio_wl32(pb
, 0); /* length, XXX: filled later */
295 /* suggested buffer size, is set to largest chunk size in avi_write_trailer */
296 if (enc
->codec_type
== AVMEDIA_TYPE_VIDEO
)
297 avio_wl32(pb
, 1024 * 1024);
298 else if (enc
->codec_type
== AVMEDIA_TYPE_AUDIO
)
299 avio_wl32(pb
, 12 * 1024);
302 avio_wl32(pb
, -1); /* quality */
303 avio_wl32(pb
, au_ssize
); /* sample size */
305 avio_wl16(pb
, enc
->width
);
306 avio_wl16(pb
, enc
->height
);
307 ff_end_tag(pb
, strh
);
309 if (enc
->codec_type
!= AVMEDIA_TYPE_DATA
) {
311 enum AVPixelFormat pix_fmt
;
313 strf
= ff_start_tag(pb
, "strf");
314 switch (enc
->codec_type
) {
315 case AVMEDIA_TYPE_SUBTITLE
:
316 /* XSUB subtitles behave like video tracks, other subtitles
317 * are not (yet) supported. */
318 if (enc
->codec_id
!= AV_CODEC_ID_XSUB
)
320 case AVMEDIA_TYPE_VIDEO
:
321 /* WMP expects RGB 5:5:5 rawvideo in avi to have bpp set to 16. */
323 && enc
->codec_id
== AV_CODEC_ID_RAWVIDEO
324 && enc
->pix_fmt
== AV_PIX_FMT_RGB555LE
325 && enc
->bits_per_coded_sample
== 15)
326 enc
->bits_per_coded_sample
= 16;
327 ff_put_bmp_header(pb
, enc
, ff_codec_bmp_tags
, 0, 0);
328 pix_fmt
= avpriv_find_pix_fmt(avpriv_pix_fmt_bps_avi
,
329 enc
->bits_per_coded_sample
);
331 && enc
->codec_id
== AV_CODEC_ID_RAWVIDEO
332 && enc
->pix_fmt
!= pix_fmt
333 && enc
->pix_fmt
!= AV_PIX_FMT_NONE
)
334 av_log(s
, AV_LOG_ERROR
, "%s rawvideo cannot be written to avi, output file will be unreadable\n",
335 av_get_pix_fmt_name(enc
->pix_fmt
));
337 case AVMEDIA_TYPE_AUDIO
:
338 if ((ret
= ff_put_wav_header(pb
, enc
, 0)) < 0)
342 av_log(s
, AV_LOG_ERROR
,
343 "Invalid or not supported codec type '%s' found in the input\n",
344 (char *)av_x_if_null(av_get_media_type_string(enc
->codec_type
), "?"));
345 return AVERROR(EINVAL
);
347 ff_end_tag(pb
, strf
);
348 if ((t
= av_dict_get(st
->metadata
, "title", NULL
, 0))) {
349 ff_riff_write_info_tag(s
->pb
, "strn", t
->value
);
352 if (enc
->codec_id
== AV_CODEC_ID_XSUB
353 && (t
= av_dict_get(s
->streams
[i
]->metadata
, "language", NULL
, 0))) {
354 const char* langstr
= av_convert_lang_to(t
->value
, AV_LANG_ISO639_1
);
357 char* str
= av_asprintf("Subtitle - %s-xx;02", langstr
);
358 ff_riff_write_info_tag(s
->pb
, "strn", str
);
365 unsigned char tag
[5];
368 /* Starting to lay out AVI OpenDML master index.
369 * We want to make it JUNK entry for now, since we'd
370 * like to get away without making AVI an OpenDML one
371 * for compatibility reasons. */
372 avist
->indexes
.entry
= avist
->indexes
.ents_allocated
= 0;
373 avist
->indexes
.indx_start
= ff_start_tag(pb
, "JUNK");
374 avio_wl16(pb
, 4); /* wLongsPerEntry */
375 avio_w8(pb
, 0); /* bIndexSubType (0 == frame index) */
376 avio_w8(pb
, 0); /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */
377 avio_wl32(pb
, 0); /* nEntriesInUse (will fill out later on) */
378 ffio_wfourcc(pb
, avi_stream2fourcc(tag
, i
, enc
->codec_type
));
380 avio_wl64(pb
, 0); /* dwReserved[3] */
381 // avio_wl32(pb, 0); /* Must be 0. */
382 for (j
= 0; j
< AVI_MASTER_INDEX_SIZE
* 2; j
++)
384 ff_end_tag(pb
, avist
->indexes
.indx_start
);
387 if (enc
->codec_type
== AVMEDIA_TYPE_VIDEO
&&
388 st
->sample_aspect_ratio
.num
> 0 &&
389 st
->sample_aspect_ratio
.den
> 0) {
390 int vprp
= ff_start_tag(pb
, "vprp");
391 AVRational dar
= av_mul_q(st
->sample_aspect_ratio
,
392 (AVRational
) { enc
->width
,
395 av_reduce(&num
, &den
, dar
.num
, dar
.den
, 0xFFFF);
397 avio_wl32(pb
, 0); // video format = unknown
398 avio_wl32(pb
, 0); // video standard = unknown
399 // TODO: should be avg_frame_rate
400 avio_wl32(pb
, lrintf(1.0 / av_q2d(st
->time_base
)));
401 avio_wl32(pb
, enc
->width
);
402 avio_wl32(pb
, enc
->height
);
405 avio_wl32(pb
, enc
->width
);
406 avio_wl32(pb
, enc
->height
);
407 avio_wl32(pb
, 1); // progressive FIXME
409 avio_wl32(pb
, enc
->height
);
410 avio_wl32(pb
, enc
->width
);
411 avio_wl32(pb
, enc
->height
);
412 avio_wl32(pb
, enc
->width
);
418 ff_end_tag(pb
, vprp
);
421 ff_end_tag(pb
, list2
);
425 /* AVI could become an OpenDML one, if it grows beyond 2Gb range */
426 avi
->odml_list
= ff_start_tag(pb
, "JUNK");
427 ffio_wfourcc(pb
, "odml");
428 ffio_wfourcc(pb
, "dmlh");
430 for (i
= 0; i
< 248; i
+= 4)
432 ff_end_tag(pb
, avi
->odml_list
);
435 ff_end_tag(pb
, list1
);
437 ff_riff_write_info(s
);
440 padding
= s
->metadata_header_padding
;
444 /* some padding for easier tag editing */
446 list2
= ff_start_tag(pb
, "JUNK");
447 for (i
= padding
; i
> 0; i
-= 4)
449 ff_end_tag(pb
, list2
);
452 avi
->movi_list
= ff_start_tag(pb
, "LIST");
453 ffio_wfourcc(pb
, "movi");
460 static int avi_write_ix(AVFormatContext
*s
)
462 AVIOContext
*pb
= s
->pb
;
463 AVIContext
*avi
= s
->priv_data
;
465 char ix_tag
[] = "ix00";
468 av_assert0(pb
->seekable
);
470 if (avi
->riff_id
> AVI_MASTER_INDEX_SIZE
) {
471 av_log(s
, AV_LOG_ERROR
, "Invalid riff index %d > %d\n",
472 avi
->riff_id
, AVI_MASTER_INDEX_SIZE
);
473 return AVERROR(EINVAL
);
476 for (i
= 0; i
< s
->nb_streams
; i
++) {
477 AVIStream
*avist
= s
->streams
[i
]->priv_data
;
480 avi_stream2fourcc(tag
, i
, s
->streams
[i
]->codec
->codec_type
);
483 /* Writing AVI OpenDML leaf index chunk */
485 ffio_wfourcc(pb
, ix_tag
); /* ix?? */
486 avio_wl32(pb
, avist
->indexes
.entry
* 8 + 24);
488 avio_wl16(pb
, 2); /* wLongsPerEntry */
489 avio_w8(pb
, 0); /* bIndexSubType (0 == frame index) */
490 avio_w8(pb
, 1); /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */
491 avio_wl32(pb
, avist
->indexes
.entry
);
493 ffio_wfourcc(pb
, tag
); /* dwChunkId */
494 avio_wl64(pb
, avi
->movi_list
); /* qwBaseOffset */
495 avio_wl32(pb
, 0); /* dwReserved_3 (must be 0) */
497 for (j
= 0; j
< avist
->indexes
.entry
; j
++) {
498 AVIIentry
*ie
= avi_get_ientry(&avist
->indexes
, j
);
499 avio_wl32(pb
, ie
->pos
+ 8);
500 avio_wl32(pb
, ((uint32_t) ie
->len
& ~0x80000000) |
501 (ie
->flags
& 0x10 ? 0 : 0x80000000));
506 /* Updating one entry in the AVI OpenDML master index */
507 avio_seek(pb
, avist
->indexes
.indx_start
- 8, SEEK_SET
);
508 ffio_wfourcc(pb
, "indx"); /* enabling this entry */
510 avio_wl32(pb
, avi
->riff_id
); /* nEntriesInUse */
511 avio_skip(pb
, 16 * avi
->riff_id
);
512 avio_wl64(pb
, ix
); /* qwOffset */
513 avio_wl32(pb
, pos
- ix
); /* dwSize */
514 avio_wl32(pb
, avist
->indexes
.entry
); /* dwDuration */
516 avio_seek(pb
, pos
, SEEK_SET
);
521 static int avi_write_idx1(AVFormatContext
*s
)
523 AVIOContext
*pb
= s
->pb
;
524 AVIContext
*avi
= s
->priv_data
;
531 AVIIentry
*ie
= 0, *tie
;
532 int empty
, stream_id
= -1;
534 idx_chunk
= ff_start_tag(pb
, "idx1");
535 for (i
= 0; i
< s
->nb_streams
; i
++) {
536 avist
= s
->streams
[i
]->priv_data
;
542 for (i
= 0; i
< s
->nb_streams
; i
++) {
543 avist
= s
->streams
[i
]->priv_data
;
544 if (avist
->indexes
.entry
<= avist
->entry
)
547 tie
= avi_get_ientry(&avist
->indexes
, avist
->entry
);
548 if (empty
|| tie
->pos
< ie
->pos
) {
555 avist
= s
->streams
[stream_id
]->priv_data
;
556 avi_stream2fourcc(tag
, stream_id
,
557 s
->streams
[stream_id
]->codec
->codec_type
);
558 ffio_wfourcc(pb
, tag
);
559 avio_wl32(pb
, ie
->flags
);
560 avio_wl32(pb
, ie
->pos
);
561 avio_wl32(pb
, ie
->len
);
565 ff_end_tag(pb
, idx_chunk
);
567 avi_write_counters(s
, avi
->riff_id
);
572 static int write_skip_frames(AVFormatContext
*s
, int stream_index
, int64_t dts
)
574 AVIStream
*avist
= s
->streams
[stream_index
]->priv_data
;
575 AVCodecContext
*enc
= s
->streams
[stream_index
]->codec
;
577 av_dlog(s
, "dts:%s packet_count:%d stream_index:%d\n", av_ts2str(dts
), avist
->packet_count
, stream_index
);
578 while (enc
->block_align
== 0 && dts
!= AV_NOPTS_VALUE
&&
579 dts
> avist
->packet_count
&& enc
->codec_id
!= AV_CODEC_ID_XSUB
&& avist
->packet_count
) {
580 AVPacket empty_packet
;
582 if (dts
- avist
->packet_count
> 60000) {
583 av_log(s
, AV_LOG_ERROR
, "Too large number of skipped frames %"PRId64
" > 60000\n", dts
- avist
->packet_count
);
584 return AVERROR(EINVAL
);
587 av_init_packet(&empty_packet
);
588 empty_packet
.size
= 0;
589 empty_packet
.data
= NULL
;
590 empty_packet
.stream_index
= stream_index
;
591 avi_write_packet(s
, &empty_packet
);
592 av_dlog(s
, "dup dts:%s packet_count:%d\n", av_ts2str(dts
), avist
->packet_count
);
598 static int avi_write_packet(AVFormatContext
*s
, AVPacket
*pkt
)
600 unsigned char tag
[5];
601 unsigned int flags
= 0;
602 const int stream_index
= pkt
->stream_index
;
603 int size
= pkt
->size
;
604 AVIContext
*avi
= s
->priv_data
;
605 AVIOContext
*pb
= s
->pb
;
606 AVIStream
*avist
= s
->streams
[stream_index
]->priv_data
;
607 AVCodecContext
*enc
= s
->streams
[stream_index
]->codec
;
610 if (enc
->codec_id
== AV_CODEC_ID_H264
&& enc
->codec_tag
== MKTAG('H','2','6','4') && pkt
->size
) {
611 ret
= ff_check_h264_startcode(s
, s
->streams
[stream_index
], pkt
);
616 if ((ret
= write_skip_frames(s
, stream_index
, pkt
->dts
)) < 0)
619 if (pkt
->dts
!= AV_NOPTS_VALUE
)
620 avist
->last_dts
= pkt
->dts
+ pkt
->duration
;
622 avist
->packet_count
++;
624 // Make sure to put an OpenDML chunk when the file size exceeds the limits
626 (avio_tell(pb
) - avi
->riff_start
> AVI_MAX_RIFF_SIZE
)) {
628 ff_end_tag(pb
, avi
->movi_list
);
630 if (avi
->riff_id
== 1)
633 ff_end_tag(pb
, avi
->riff_start
);
634 avi
->movi_list
= avi_start_new_riff(s
, pb
, "AVIX", "movi");
637 avi_stream2fourcc(tag
, stream_index
, enc
->codec_type
);
638 if (pkt
->flags
& AV_PKT_FLAG_KEY
)
640 if (enc
->codec_type
== AVMEDIA_TYPE_AUDIO
)
641 avist
->audio_strm_length
+= size
;
643 if (s
->pb
->seekable
) {
644 AVIIndex
*idx
= &avist
->indexes
;
645 int cl
= idx
->entry
/ AVI_INDEX_CLUSTER_SIZE
;
646 int id
= idx
->entry
% AVI_INDEX_CLUSTER_SIZE
;
647 if (idx
->ents_allocated
<= idx
->entry
) {
648 idx
->cluster
= av_realloc_f(idx
->cluster
, sizeof(void*), cl
+1);
650 idx
->ents_allocated
= 0;
652 return AVERROR(ENOMEM
);
655 av_malloc(AVI_INDEX_CLUSTER_SIZE
* sizeof(AVIIentry
));
656 if (!idx
->cluster
[cl
])
657 return AVERROR(ENOMEM
);
658 idx
->ents_allocated
+= AVI_INDEX_CLUSTER_SIZE
;
661 idx
->cluster
[cl
][id
].flags
= flags
;
662 idx
->cluster
[cl
][id
].pos
= avio_tell(pb
) - avi
->movi_list
;
663 idx
->cluster
[cl
][id
].len
= size
;
664 avist
->max_size
= FFMAX(avist
->max_size
, size
);
668 avio_write(pb
, tag
, 4);
670 avio_write(pb
, pkt
->data
, size
);
677 static int avi_write_trailer(AVFormatContext
*s
)
679 AVIContext
*avi
= s
->priv_data
;
680 AVIOContext
*pb
= s
->pb
;
682 int i
, j
, n
, nb_frames
;
685 for (i
= 0; i
< s
->nb_streams
; i
++) {
686 AVIStream
*avist
= s
->streams
[i
]->priv_data
;
687 write_skip_frames(s
, i
, avist
->last_dts
);
691 if (avi
->riff_id
== 1) {
692 ff_end_tag(pb
, avi
->movi_list
);
693 res
= avi_write_idx1(s
);
694 ff_end_tag(pb
, avi
->riff_start
);
697 ff_end_tag(pb
, avi
->movi_list
);
698 ff_end_tag(pb
, avi
->riff_start
);
700 file_size
= avio_tell(pb
);
701 avio_seek(pb
, avi
->odml_list
- 8, SEEK_SET
);
702 ffio_wfourcc(pb
, "LIST"); /* Making this AVI OpenDML one */
705 for (n
= nb_frames
= 0; n
< s
->nb_streams
; n
++) {
706 AVCodecContext
*stream
= s
->streams
[n
]->codec
;
707 AVIStream
*avist
= s
->streams
[n
]->priv_data
;
709 if (stream
->codec_type
== AVMEDIA_TYPE_VIDEO
) {
710 if (nb_frames
< avist
->packet_count
)
711 nb_frames
= avist
->packet_count
;
713 if (stream
->codec_id
== AV_CODEC_ID_MP2
||
714 stream
->codec_id
== AV_CODEC_ID_MP3
)
715 nb_frames
+= avist
->packet_count
;
718 avio_wl32(pb
, nb_frames
);
719 avio_seek(pb
, file_size
, SEEK_SET
);
721 avi_write_counters(s
, avi
->riff_id
);
725 for (i
= 0; i
< s
->nb_streams
; i
++) {
726 AVIStream
*avist
= s
->streams
[i
]->priv_data
;
727 for (j
= 0; j
< avist
->indexes
.ents_allocated
/ AVI_INDEX_CLUSTER_SIZE
; j
++)
728 av_freep(&avist
->indexes
.cluster
[j
]);
729 av_freep(&avist
->indexes
.cluster
);
730 avist
->indexes
.ents_allocated
= avist
->indexes
.entry
= 0;
732 avio_seek(pb
, avist
->frames_hdr_strm
+ 4, SEEK_SET
);
733 avio_wl32(pb
, avist
->max_size
);
740 AVOutputFormat ff_avi_muxer
= {
742 .long_name
= NULL_IF_CONFIG_SMALL("AVI (Audio Video Interleaved)"),
743 .mime_type
= "video/x-msvideo",
745 .priv_data_size
= sizeof(AVIContext
),
746 .audio_codec
= CONFIG_LIBMP3LAME
? AV_CODEC_ID_MP3
: AV_CODEC_ID_AC3
,
747 .video_codec
= AV_CODEC_ID_MPEG4
,
748 .write_header
= avi_write_header
,
749 .write_packet
= avi_write_packet
,
750 .write_trailer
= avi_write_trailer
,
751 .codec_tag
= (const AVCodecTag
* const []) {
752 ff_codec_bmp_tags
, ff_codec_wav_tags
, 0