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2ba45a60 DM |
1 | /* |
2 | * AVI muxer | |
3 | * Copyright (c) 2000 Fabrice Bellard | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
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. | |
11 | * | |
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. | |
16 | * | |
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 | |
20 | */ | |
21 | ||
22 | //#define DEBUG | |
23 | ||
24 | #include "avformat.h" | |
25 | #include "internal.h" | |
26 | #include "avi.h" | |
27 | #include "avio_internal.h" | |
28 | #include "riff.h" | |
29 | #include "mpegts.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" | |
38 | ||
39 | /* | |
40 | * TODO: | |
41 | * - fill all fields if non streamed (nb_frames for example) | |
42 | */ | |
43 | ||
44 | typedef struct AVIIentry { | |
45 | unsigned int flags, pos, len; | |
46 | } AVIIentry; | |
47 | ||
48 | #define AVI_INDEX_CLUSTER_SIZE 16384 | |
49 | ||
50 | typedef struct AVIIndex { | |
51 | int64_t indx_start; | |
52 | int entry; | |
53 | int ents_allocated; | |
54 | AVIIentry** cluster; | |
55 | } AVIIndex; | |
56 | ||
57 | typedef struct { | |
58 | int64_t riff_start, movi_list, odml_list; | |
59 | int64_t frames_hdr_all; | |
60 | int riff_id; | |
61 | } AVIContext; | |
62 | ||
63 | typedef struct { | |
64 | int64_t frames_hdr_strm; | |
65 | int64_t audio_strm_length; | |
66 | int packet_count; | |
67 | int entry; | |
68 | int max_size; | |
69 | ||
70 | AVIIndex indexes; | |
71 | } AVIStream; | |
72 | ||
73 | static inline AVIIentry *avi_get_ientry(AVIIndex *idx, int ent_id) | |
74 | { | |
75 | int cl = ent_id / AVI_INDEX_CLUSTER_SIZE; | |
76 | int id = ent_id % AVI_INDEX_CLUSTER_SIZE; | |
77 | return &idx->cluster[cl][id]; | |
78 | } | |
79 | ||
80 | static int64_t avi_start_new_riff(AVFormatContext *s, AVIOContext *pb, | |
81 | const char *riff_tag, const char *list_tag) | |
82 | { | |
83 | AVIContext *avi = s->priv_data; | |
84 | int64_t loff; | |
85 | int i; | |
86 | ||
87 | avi->riff_id++; | |
88 | for (i = 0; i < s->nb_streams; i++) { | |
89 | AVIStream *avist = s->streams[i]->priv_data; | |
90 | avist->indexes.entry = 0; | |
91 | } | |
92 | ||
93 | avi->riff_start = ff_start_tag(pb, "RIFF"); | |
94 | ffio_wfourcc(pb, riff_tag); | |
95 | loff = ff_start_tag(pb, "LIST"); | |
96 | ffio_wfourcc(pb, list_tag); | |
97 | return loff; | |
98 | } | |
99 | ||
100 | static char *avi_stream2fourcc(char *tag, int index, enum AVMediaType type) | |
101 | { | |
102 | tag[0] = '0' + index / 10; | |
103 | tag[1] = '0' + index % 10; | |
104 | if (type == AVMEDIA_TYPE_VIDEO) { | |
105 | tag[2] = 'd'; | |
106 | tag[3] = 'c'; | |
107 | } else if (type == AVMEDIA_TYPE_SUBTITLE) { | |
108 | // note: this is not an official code | |
109 | tag[2] = 's'; | |
110 | tag[3] = 'b'; | |
111 | } else { | |
112 | tag[2] = 'w'; | |
113 | tag[3] = 'b'; | |
114 | } | |
115 | tag[4] = '\0'; | |
116 | return tag; | |
117 | } | |
118 | ||
119 | static int avi_write_counters(AVFormatContext *s, int riff_id) | |
120 | { | |
121 | AVIOContext *pb = s->pb; | |
122 | AVIContext *avi = s->priv_data; | |
123 | int n, au_byterate, au_ssize, au_scale, nb_frames = 0; | |
124 | int64_t file_size; | |
125 | AVCodecContext *stream; | |
126 | ||
127 | file_size = avio_tell(pb); | |
128 | for (n = 0; n < s->nb_streams; n++) { | |
129 | AVIStream *avist = s->streams[n]->priv_data; | |
130 | ||
131 | av_assert0(avist->frames_hdr_strm); | |
132 | stream = s->streams[n]->codec; | |
133 | avio_seek(pb, avist->frames_hdr_strm, SEEK_SET); | |
134 | ff_parse_specific_params(s->streams[n], &au_byterate, &au_ssize, &au_scale); | |
135 | if (au_ssize == 0) | |
136 | avio_wl32(pb, avist->packet_count); | |
137 | else | |
138 | avio_wl32(pb, avist->audio_strm_length / au_ssize); | |
139 | if (stream->codec_type == AVMEDIA_TYPE_VIDEO) | |
140 | nb_frames = FFMAX(nb_frames, avist->packet_count); | |
141 | } | |
142 | if (riff_id == 1) { | |
143 | av_assert0(avi->frames_hdr_all); | |
144 | avio_seek(pb, avi->frames_hdr_all, SEEK_SET); | |
145 | avio_wl32(pb, nb_frames); | |
146 | } | |
147 | avio_seek(pb, file_size, SEEK_SET); | |
148 | ||
149 | return 0; | |
150 | } | |
151 | ||
152 | static int avi_write_header(AVFormatContext *s) | |
153 | { | |
154 | AVIContext *avi = s->priv_data; | |
155 | AVIOContext *pb = s->pb; | |
156 | int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale; | |
157 | AVCodecContext *video_enc; | |
158 | AVStream *video_st = NULL; | |
159 | int64_t list1, list2, strh, strf; | |
160 | AVDictionaryEntry *t = NULL; | |
161 | int padding; | |
162 | ||
163 | if (s->nb_streams > AVI_MAX_STREAM_COUNT) { | |
164 | av_log(s, AV_LOG_ERROR, "AVI does not support >%d streams\n", | |
165 | AVI_MAX_STREAM_COUNT); | |
166 | return AVERROR(EINVAL); | |
167 | } | |
168 | ||
169 | for (n = 0; n < s->nb_streams; n++) { | |
170 | s->streams[n]->priv_data = av_mallocz(sizeof(AVIStream)); | |
171 | if (!s->streams[n]->priv_data) | |
172 | return AVERROR(ENOMEM); | |
173 | } | |
174 | ||
175 | /* header list */ | |
176 | avi->riff_id = 0; | |
177 | list1 = avi_start_new_riff(s, pb, "AVI ", "hdrl"); | |
178 | ||
179 | /* avi header */ | |
180 | ffio_wfourcc(pb, "avih"); | |
181 | avio_wl32(pb, 14 * 4); | |
182 | bitrate = 0; | |
183 | ||
184 | video_enc = NULL; | |
185 | for (n = 0; n < s->nb_streams; n++) { | |
186 | AVCodecContext *codec = s->streams[n]->codec; | |
187 | bitrate += codec->bit_rate; | |
188 | if (codec->codec_type == AVMEDIA_TYPE_VIDEO) { | |
189 | video_enc = codec; | |
190 | video_st = s->streams[n]; | |
191 | } | |
192 | } | |
193 | ||
194 | nb_frames = 0; | |
195 | ||
196 | // TODO: should be avg_frame_rate | |
197 | if (video_st) | |
198 | avio_wl32(pb, (uint32_t) (INT64_C(1000000) * video_st->time_base.num / | |
199 | video_st->time_base.den)); | |
200 | else | |
201 | avio_wl32(pb, 0); | |
202 | avio_wl32(pb, bitrate / 8); /* XXX: not quite exact */ | |
203 | avio_wl32(pb, 0); /* padding */ | |
204 | if (!pb->seekable) | |
205 | avio_wl32(pb, AVIF_TRUSTCKTYPE | AVIF_ISINTERLEAVED); /* flags */ | |
206 | else | |
207 | avio_wl32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */ | |
208 | avi->frames_hdr_all = avio_tell(pb); /* remember this offset to fill later */ | |
209 | avio_wl32(pb, nb_frames); /* nb frames, filled later */ | |
210 | avio_wl32(pb, 0); /* initial frame */ | |
211 | avio_wl32(pb, s->nb_streams); /* nb streams */ | |
212 | avio_wl32(pb, 1024 * 1024); /* suggested buffer size */ | |
213 | if (video_enc) { | |
214 | avio_wl32(pb, video_enc->width); | |
215 | avio_wl32(pb, video_enc->height); | |
216 | } else { | |
217 | avio_wl32(pb, 0); | |
218 | avio_wl32(pb, 0); | |
219 | } | |
220 | avio_wl32(pb, 0); /* reserved */ | |
221 | avio_wl32(pb, 0); /* reserved */ | |
222 | avio_wl32(pb, 0); /* reserved */ | |
223 | avio_wl32(pb, 0); /* reserved */ | |
224 | ||
225 | /* stream list */ | |
226 | for (i = 0; i < n; i++) { | |
227 | AVStream *st = s->streams[i]; | |
228 | AVCodecContext *enc = st->codec; | |
229 | AVIStream *avist = st->priv_data; | |
230 | list2 = ff_start_tag(pb, "LIST"); | |
231 | ffio_wfourcc(pb, "strl"); | |
232 | ||
233 | /* stream generic header */ | |
234 | strh = ff_start_tag(pb, "strh"); | |
235 | switch (enc->codec_type) { | |
236 | case AVMEDIA_TYPE_SUBTITLE: | |
237 | // XSUB subtitles behave like video tracks, other subtitles | |
238 | // are not (yet) supported. | |
239 | if (enc->codec_id != AV_CODEC_ID_XSUB) { | |
240 | av_log(s, AV_LOG_ERROR, | |
241 | "Subtitle streams other than DivX XSUB are not supported by the AVI muxer.\n"); | |
242 | return AVERROR_PATCHWELCOME; | |
243 | } | |
244 | case AVMEDIA_TYPE_VIDEO: | |
245 | ffio_wfourcc(pb, "vids"); | |
246 | break; | |
247 | case AVMEDIA_TYPE_AUDIO: | |
248 | ffio_wfourcc(pb, "auds"); | |
249 | break; | |
250 | // case AVMEDIA_TYPE_TEXT: | |
251 | // ffio_wfourcc(pb, "txts"); | |
252 | // break; | |
253 | case AVMEDIA_TYPE_DATA: | |
254 | ffio_wfourcc(pb, "dats"); | |
255 | break; | |
256 | } | |
257 | if (enc->codec_type == AVMEDIA_TYPE_VIDEO || | |
258 | enc->codec_id == AV_CODEC_ID_XSUB) | |
259 | avio_wl32(pb, enc->codec_tag); | |
260 | else | |
261 | avio_wl32(pb, 1); | |
262 | avio_wl32(pb, 0); /* flags */ | |
263 | avio_wl16(pb, 0); /* priority */ | |
264 | avio_wl16(pb, 0); /* language */ | |
265 | avio_wl32(pb, 0); /* initial frame */ | |
266 | ||
267 | ff_parse_specific_params(st, &au_byterate, &au_ssize, &au_scale); | |
268 | ||
269 | if ( enc->codec_type == AVMEDIA_TYPE_VIDEO | |
270 | && enc->codec_id != AV_CODEC_ID_XSUB | |
271 | && au_byterate > 1000LL*au_scale) { | |
272 | au_byterate = 600; | |
273 | au_scale = 1; | |
274 | } | |
275 | avpriv_set_pts_info(st, 64, au_scale, au_byterate); | |
276 | if (enc->codec_id == AV_CODEC_ID_XSUB) | |
277 | au_scale = au_byterate = 0; | |
278 | ||
279 | avio_wl32(pb, au_scale); /* scale */ | |
280 | avio_wl32(pb, au_byterate); /* rate */ | |
281 | ||
282 | avio_wl32(pb, 0); /* start */ | |
283 | /* remember this offset to fill later */ | |
284 | avist->frames_hdr_strm = avio_tell(pb); | |
285 | if (!pb->seekable) | |
286 | /* FIXME: this may be broken, but who cares */ | |
287 | avio_wl32(pb, AVI_MAX_RIFF_SIZE); | |
288 | else | |
289 | avio_wl32(pb, 0); /* length, XXX: filled later */ | |
290 | ||
291 | /* suggested buffer size, is set to largest chunk size in avi_write_trailer */ | |
292 | if (enc->codec_type == AVMEDIA_TYPE_VIDEO) | |
293 | avio_wl32(pb, 1024 * 1024); | |
294 | else if (enc->codec_type == AVMEDIA_TYPE_AUDIO) | |
295 | avio_wl32(pb, 12 * 1024); | |
296 | else | |
297 | avio_wl32(pb, 0); | |
298 | avio_wl32(pb, -1); /* quality */ | |
299 | avio_wl32(pb, au_ssize); /* sample size */ | |
300 | avio_wl32(pb, 0); | |
301 | avio_wl16(pb, enc->width); | |
302 | avio_wl16(pb, enc->height); | |
303 | ff_end_tag(pb, strh); | |
304 | ||
305 | if (enc->codec_type != AVMEDIA_TYPE_DATA) { | |
306 | int ret; | |
307 | enum AVPixelFormat pix_fmt; | |
308 | ||
309 | strf = ff_start_tag(pb, "strf"); | |
310 | switch (enc->codec_type) { | |
311 | case AVMEDIA_TYPE_SUBTITLE: | |
312 | /* XSUB subtitles behave like video tracks, other subtitles | |
313 | * are not (yet) supported. */ | |
314 | if (enc->codec_id != AV_CODEC_ID_XSUB) | |
315 | break; | |
316 | case AVMEDIA_TYPE_VIDEO: | |
317 | /* WMP expects RGB 5:5:5 rawvideo in avi to have bpp set to 16. */ | |
318 | if ( !enc->codec_tag | |
319 | && enc->codec_id == AV_CODEC_ID_RAWVIDEO | |
320 | && enc->pix_fmt == AV_PIX_FMT_RGB555LE | |
321 | && enc->bits_per_coded_sample == 15) | |
322 | enc->bits_per_coded_sample = 16; | |
323 | ff_put_bmp_header(pb, enc, ff_codec_bmp_tags, 0, 0); | |
324 | pix_fmt = avpriv_find_pix_fmt(avpriv_pix_fmt_bps_avi, | |
325 | enc->bits_per_coded_sample); | |
326 | if ( !enc->codec_tag | |
327 | && enc->codec_id == AV_CODEC_ID_RAWVIDEO | |
328 | && enc->pix_fmt != pix_fmt | |
329 | && enc->pix_fmt != AV_PIX_FMT_NONE) | |
330 | av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written to avi, output file will be unreadable\n", | |
331 | av_get_pix_fmt_name(enc->pix_fmt)); | |
332 | break; | |
333 | case AVMEDIA_TYPE_AUDIO: | |
334 | if ((ret = ff_put_wav_header(pb, enc, 0)) < 0) | |
335 | return ret; | |
336 | break; | |
337 | default: | |
338 | av_log(s, AV_LOG_ERROR, | |
339 | "Invalid or not supported codec type '%s' found in the input\n", | |
340 | (char *)av_x_if_null(av_get_media_type_string(enc->codec_type), "?")); | |
341 | return AVERROR(EINVAL); | |
342 | } | |
343 | ff_end_tag(pb, strf); | |
344 | if ((t = av_dict_get(st->metadata, "title", NULL, 0))) { | |
345 | ff_riff_write_info_tag(s->pb, "strn", t->value); | |
346 | t = NULL; | |
347 | } | |
348 | if (enc->codec_id == AV_CODEC_ID_XSUB | |
349 | && (t = av_dict_get(s->streams[i]->metadata, "language", NULL, 0))) { | |
350 | const char* langstr = av_convert_lang_to(t->value, AV_LANG_ISO639_1); | |
351 | t = NULL; | |
352 | if (langstr) { | |
353 | char* str = av_asprintf("Subtitle - %s-xx;02", langstr); | |
354 | ff_riff_write_info_tag(s->pb, "strn", str); | |
355 | av_free(str); | |
356 | } | |
357 | } | |
358 | } | |
359 | ||
360 | if (pb->seekable) { | |
361 | unsigned char tag[5]; | |
362 | int j; | |
363 | ||
364 | /* Starting to lay out AVI OpenDML master index. | |
365 | * We want to make it JUNK entry for now, since we'd | |
366 | * like to get away without making AVI an OpenDML one | |
367 | * for compatibility reasons. */ | |
368 | avist->indexes.entry = avist->indexes.ents_allocated = 0; | |
369 | avist->indexes.indx_start = ff_start_tag(pb, "JUNK"); | |
370 | avio_wl16(pb, 4); /* wLongsPerEntry */ | |
371 | avio_w8(pb, 0); /* bIndexSubType (0 == frame index) */ | |
372 | avio_w8(pb, 0); /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */ | |
373 | avio_wl32(pb, 0); /* nEntriesInUse (will fill out later on) */ | |
374 | ffio_wfourcc(pb, avi_stream2fourcc(tag, i, enc->codec_type)); | |
375 | /* dwChunkId */ | |
376 | avio_wl64(pb, 0); /* dwReserved[3] */ | |
377 | // avio_wl32(pb, 0); /* Must be 0. */ | |
378 | for (j = 0; j < AVI_MASTER_INDEX_SIZE * 2; j++) | |
379 | avio_wl64(pb, 0); | |
380 | ff_end_tag(pb, avist->indexes.indx_start); | |
381 | } | |
382 | ||
383 | if (enc->codec_type == AVMEDIA_TYPE_VIDEO && | |
384 | st->sample_aspect_ratio.num > 0 && | |
385 | st->sample_aspect_ratio.den > 0) { | |
386 | int vprp = ff_start_tag(pb, "vprp"); | |
387 | AVRational dar = av_mul_q(st->sample_aspect_ratio, | |
388 | (AVRational) { enc->width, | |
389 | enc->height }); | |
390 | int num, den; | |
391 | av_reduce(&num, &den, dar.num, dar.den, 0xFFFF); | |
392 | ||
393 | avio_wl32(pb, 0); // video format = unknown | |
394 | avio_wl32(pb, 0); // video standard = unknown | |
395 | // TODO: should be avg_frame_rate | |
396 | avio_wl32(pb, lrintf(1.0 / av_q2d(st->time_base))); | |
397 | avio_wl32(pb, enc->width); | |
398 | avio_wl32(pb, enc->height); | |
399 | avio_wl16(pb, den); | |
400 | avio_wl16(pb, num); | |
401 | avio_wl32(pb, enc->width); | |
402 | avio_wl32(pb, enc->height); | |
403 | avio_wl32(pb, 1); // progressive FIXME | |
404 | ||
405 | avio_wl32(pb, enc->height); | |
406 | avio_wl32(pb, enc->width); | |
407 | avio_wl32(pb, enc->height); | |
408 | avio_wl32(pb, enc->width); | |
409 | avio_wl32(pb, 0); | |
410 | avio_wl32(pb, 0); | |
411 | ||
412 | avio_wl32(pb, 0); | |
413 | avio_wl32(pb, 0); | |
414 | ff_end_tag(pb, vprp); | |
415 | } | |
416 | ||
417 | ff_end_tag(pb, list2); | |
418 | } | |
419 | ||
420 | if (pb->seekable) { | |
421 | /* AVI could become an OpenDML one, if it grows beyond 2Gb range */ | |
422 | avi->odml_list = ff_start_tag(pb, "JUNK"); | |
423 | ffio_wfourcc(pb, "odml"); | |
424 | ffio_wfourcc(pb, "dmlh"); | |
425 | avio_wl32(pb, 248); | |
426 | for (i = 0; i < 248; i += 4) | |
427 | avio_wl32(pb, 0); | |
428 | ff_end_tag(pb, avi->odml_list); | |
429 | } | |
430 | ||
431 | ff_end_tag(pb, list1); | |
432 | ||
433 | ff_riff_write_info(s); | |
434 | ||
435 | ||
436 | padding = s->metadata_header_padding; | |
437 | if (padding < 0) | |
438 | padding = 1016; | |
439 | ||
440 | /* some padding for easier tag editing */ | |
441 | if (padding) { | |
442 | list2 = ff_start_tag(pb, "JUNK"); | |
443 | for (i = padding; i > 0; i -= 4) | |
444 | avio_wl32(pb, 0); | |
445 | ff_end_tag(pb, list2); | |
446 | } | |
447 | ||
448 | avi->movi_list = ff_start_tag(pb, "LIST"); | |
449 | ffio_wfourcc(pb, "movi"); | |
450 | ||
451 | avio_flush(pb); | |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
456 | static int avi_write_ix(AVFormatContext *s) | |
457 | { | |
458 | AVIOContext *pb = s->pb; | |
459 | AVIContext *avi = s->priv_data; | |
460 | char tag[5]; | |
461 | char ix_tag[] = "ix00"; | |
462 | int i, j; | |
463 | ||
464 | av_assert0(pb->seekable); | |
465 | ||
466 | if (avi->riff_id > AVI_MASTER_INDEX_SIZE) { | |
467 | av_log(s, AV_LOG_ERROR, "Invalid riff index %d > %d\n", | |
468 | avi->riff_id, AVI_MASTER_INDEX_SIZE); | |
469 | return AVERROR(EINVAL); | |
470 | } | |
471 | ||
472 | for (i = 0; i < s->nb_streams; i++) { | |
473 | AVIStream *avist = s->streams[i]->priv_data; | |
474 | int64_t ix, pos; | |
475 | ||
476 | avi_stream2fourcc(tag, i, s->streams[i]->codec->codec_type); | |
477 | ix_tag[3] = '0' + i; | |
478 | ||
479 | /* Writing AVI OpenDML leaf index chunk */ | |
480 | ix = avio_tell(pb); | |
481 | ffio_wfourcc(pb, ix_tag); /* ix?? */ | |
482 | avio_wl32(pb, avist->indexes.entry * 8 + 24); | |
483 | /* chunk size */ | |
484 | avio_wl16(pb, 2); /* wLongsPerEntry */ | |
485 | avio_w8(pb, 0); /* bIndexSubType (0 == frame index) */ | |
486 | avio_w8(pb, 1); /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */ | |
487 | avio_wl32(pb, avist->indexes.entry); | |
488 | /* nEntriesInUse */ | |
489 | ffio_wfourcc(pb, tag); /* dwChunkId */ | |
490 | avio_wl64(pb, avi->movi_list); /* qwBaseOffset */ | |
491 | avio_wl32(pb, 0); /* dwReserved_3 (must be 0) */ | |
492 | ||
493 | for (j = 0; j < avist->indexes.entry; j++) { | |
494 | AVIIentry *ie = avi_get_ientry(&avist->indexes, j); | |
495 | avio_wl32(pb, ie->pos + 8); | |
496 | avio_wl32(pb, ((uint32_t) ie->len & ~0x80000000) | | |
497 | (ie->flags & 0x10 ? 0 : 0x80000000)); | |
498 | } | |
499 | avio_flush(pb); | |
500 | pos = avio_tell(pb); | |
501 | ||
502 | /* Updating one entry in the AVI OpenDML master index */ | |
503 | avio_seek(pb, avist->indexes.indx_start - 8, SEEK_SET); | |
504 | ffio_wfourcc(pb, "indx"); /* enabling this entry */ | |
505 | avio_skip(pb, 8); | |
506 | avio_wl32(pb, avi->riff_id); /* nEntriesInUse */ | |
507 | avio_skip(pb, 16 * avi->riff_id); | |
508 | avio_wl64(pb, ix); /* qwOffset */ | |
509 | avio_wl32(pb, pos - ix); /* dwSize */ | |
510 | avio_wl32(pb, avist->indexes.entry); /* dwDuration */ | |
511 | ||
512 | avio_seek(pb, pos, SEEK_SET); | |
513 | } | |
514 | return 0; | |
515 | } | |
516 | ||
517 | static int avi_write_idx1(AVFormatContext *s) | |
518 | { | |
519 | AVIOContext *pb = s->pb; | |
520 | AVIContext *avi = s->priv_data; | |
521 | int64_t idx_chunk; | |
522 | int i; | |
523 | char tag[5]; | |
524 | ||
525 | if (pb->seekable) { | |
526 | AVIStream *avist; | |
527 | AVIIentry *ie = 0, *tie; | |
528 | int empty, stream_id = -1; | |
529 | ||
530 | idx_chunk = ff_start_tag(pb, "idx1"); | |
531 | for (i = 0; i < s->nb_streams; i++) { | |
532 | avist = s->streams[i]->priv_data; | |
533 | avist->entry = 0; | |
534 | } | |
535 | ||
536 | do { | |
537 | empty = 1; | |
538 | for (i = 0; i < s->nb_streams; i++) { | |
539 | avist = s->streams[i]->priv_data; | |
540 | if (avist->indexes.entry <= avist->entry) | |
541 | continue; | |
542 | ||
543 | tie = avi_get_ientry(&avist->indexes, avist->entry); | |
544 | if (empty || tie->pos < ie->pos) { | |
545 | ie = tie; | |
546 | stream_id = i; | |
547 | } | |
548 | empty = 0; | |
549 | } | |
550 | if (!empty) { | |
551 | avist = s->streams[stream_id]->priv_data; | |
552 | avi_stream2fourcc(tag, stream_id, | |
553 | s->streams[stream_id]->codec->codec_type); | |
554 | ffio_wfourcc(pb, tag); | |
555 | avio_wl32(pb, ie->flags); | |
556 | avio_wl32(pb, ie->pos); | |
557 | avio_wl32(pb, ie->len); | |
558 | avist->entry++; | |
559 | } | |
560 | } while (!empty); | |
561 | ff_end_tag(pb, idx_chunk); | |
562 | ||
563 | avi_write_counters(s, avi->riff_id); | |
564 | } | |
565 | return 0; | |
566 | } | |
567 | ||
568 | static int avi_write_packet(AVFormatContext *s, AVPacket *pkt) | |
569 | { | |
570 | unsigned char tag[5]; | |
571 | unsigned int flags = 0; | |
572 | const int stream_index = pkt->stream_index; | |
573 | int size = pkt->size; | |
574 | AVIContext *avi = s->priv_data; | |
575 | AVIOContext *pb = s->pb; | |
576 | AVIStream *avist = s->streams[stream_index]->priv_data; | |
577 | AVCodecContext *enc = s->streams[stream_index]->codec; | |
578 | ||
579 | if (enc->codec_id == AV_CODEC_ID_H264 && enc->codec_tag == MKTAG('H','2','6','4')) { | |
580 | int ret = ff_check_h264_startcode(s, s->streams[stream_index], pkt); | |
581 | if (ret < 0) | |
582 | return ret; | |
583 | } | |
584 | av_dlog(s, "dts:%s packet_count:%d stream_index:%d\n", av_ts2str(pkt->dts), avist->packet_count, stream_index); | |
585 | while (enc->block_align == 0 && pkt->dts != AV_NOPTS_VALUE && | |
586 | pkt->dts > avist->packet_count && enc->codec_id != AV_CODEC_ID_XSUB && avist->packet_count) { | |
587 | AVPacket empty_packet; | |
588 | ||
589 | if (pkt->dts - avist->packet_count > 60000) { | |
590 | av_log(s, AV_LOG_ERROR, "Too large number of skipped frames %"PRId64" > 60000\n", pkt->dts - avist->packet_count); | |
591 | return AVERROR(EINVAL); | |
592 | } | |
593 | ||
594 | av_init_packet(&empty_packet); | |
595 | empty_packet.size = 0; | |
596 | empty_packet.data = NULL; | |
597 | empty_packet.stream_index = stream_index; | |
598 | avi_write_packet(s, &empty_packet); | |
599 | av_dlog(s, "dup dts:%s packet_count:%d\n", av_ts2str(pkt->dts), avist->packet_count); | |
600 | } | |
601 | avist->packet_count++; | |
602 | ||
603 | // Make sure to put an OpenDML chunk when the file size exceeds the limits | |
604 | if (pb->seekable && | |
605 | (avio_tell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE)) { | |
606 | avi_write_ix(s); | |
607 | ff_end_tag(pb, avi->movi_list); | |
608 | ||
609 | if (avi->riff_id == 1) | |
610 | avi_write_idx1(s); | |
611 | ||
612 | ff_end_tag(pb, avi->riff_start); | |
613 | avi->movi_list = avi_start_new_riff(s, pb, "AVIX", "movi"); | |
614 | } | |
615 | ||
616 | avi_stream2fourcc(tag, stream_index, enc->codec_type); | |
617 | if (pkt->flags & AV_PKT_FLAG_KEY) | |
618 | flags = 0x10; | |
619 | if (enc->codec_type == AVMEDIA_TYPE_AUDIO) | |
620 | avist->audio_strm_length += size; | |
621 | ||
622 | if (s->pb->seekable) { | |
623 | AVIIndex *idx = &avist->indexes; | |
624 | int cl = idx->entry / AVI_INDEX_CLUSTER_SIZE; | |
625 | int id = idx->entry % AVI_INDEX_CLUSTER_SIZE; | |
626 | if (idx->ents_allocated <= idx->entry) { | |
627 | idx->cluster = av_realloc_f(idx->cluster, sizeof(void*), cl+1); | |
628 | if (!idx->cluster) { | |
629 | idx->ents_allocated = 0; | |
630 | idx->entry = 0; | |
631 | return AVERROR(ENOMEM); | |
632 | } | |
633 | idx->cluster[cl] = | |
634 | av_malloc(AVI_INDEX_CLUSTER_SIZE * sizeof(AVIIentry)); | |
635 | if (!idx->cluster[cl]) | |
636 | return AVERROR(ENOMEM); | |
637 | idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE; | |
638 | } | |
639 | ||
640 | idx->cluster[cl][id].flags = flags; | |
641 | idx->cluster[cl][id].pos = avio_tell(pb) - avi->movi_list; | |
642 | idx->cluster[cl][id].len = size; | |
643 | avist->max_size = FFMAX(avist->max_size, size); | |
644 | idx->entry++; | |
645 | } | |
646 | ||
647 | avio_write(pb, tag, 4); | |
648 | avio_wl32(pb, size); | |
649 | avio_write(pb, pkt->data, size); | |
650 | if (size & 1) | |
651 | avio_w8(pb, 0); | |
652 | ||
653 | return 0; | |
654 | } | |
655 | ||
656 | static int avi_write_trailer(AVFormatContext *s) | |
657 | { | |
658 | AVIContext *avi = s->priv_data; | |
659 | AVIOContext *pb = s->pb; | |
660 | int res = 0; | |
661 | int i, j, n, nb_frames; | |
662 | int64_t file_size; | |
663 | ||
664 | if (pb->seekable) { | |
665 | if (avi->riff_id == 1) { | |
666 | ff_end_tag(pb, avi->movi_list); | |
667 | res = avi_write_idx1(s); | |
668 | ff_end_tag(pb, avi->riff_start); | |
669 | } else { | |
670 | avi_write_ix(s); | |
671 | ff_end_tag(pb, avi->movi_list); | |
672 | ff_end_tag(pb, avi->riff_start); | |
673 | ||
674 | file_size = avio_tell(pb); | |
675 | avio_seek(pb, avi->odml_list - 8, SEEK_SET); | |
676 | ffio_wfourcc(pb, "LIST"); /* Making this AVI OpenDML one */ | |
677 | avio_skip(pb, 16); | |
678 | ||
679 | for (n = nb_frames = 0; n < s->nb_streams; n++) { | |
680 | AVCodecContext *stream = s->streams[n]->codec; | |
681 | AVIStream *avist = s->streams[n]->priv_data; | |
682 | ||
683 | if (stream->codec_type == AVMEDIA_TYPE_VIDEO) { | |
684 | if (nb_frames < avist->packet_count) | |
685 | nb_frames = avist->packet_count; | |
686 | } else { | |
687 | if (stream->codec_id == AV_CODEC_ID_MP2 || | |
688 | stream->codec_id == AV_CODEC_ID_MP3) | |
689 | nb_frames += avist->packet_count; | |
690 | } | |
691 | } | |
692 | avio_wl32(pb, nb_frames); | |
693 | avio_seek(pb, file_size, SEEK_SET); | |
694 | ||
695 | avi_write_counters(s, avi->riff_id); | |
696 | } | |
697 | } | |
698 | ||
699 | for (i = 0; i < s->nb_streams; i++) { | |
700 | AVIStream *avist = s->streams[i]->priv_data; | |
701 | for (j = 0; j < avist->indexes.ents_allocated / AVI_INDEX_CLUSTER_SIZE; j++) | |
702 | av_freep(&avist->indexes.cluster[j]); | |
703 | av_freep(&avist->indexes.cluster); | |
704 | avist->indexes.ents_allocated = avist->indexes.entry = 0; | |
705 | if (pb->seekable) { | |
706 | avio_seek(pb, avist->frames_hdr_strm + 4, SEEK_SET); | |
707 | avio_wl32(pb, avist->max_size); | |
708 | } | |
709 | } | |
710 | ||
711 | return res; | |
712 | } | |
713 | ||
714 | AVOutputFormat ff_avi_muxer = { | |
715 | .name = "avi", | |
716 | .long_name = NULL_IF_CONFIG_SMALL("AVI (Audio Video Interleaved)"), | |
717 | .mime_type = "video/x-msvideo", | |
718 | .extensions = "avi", | |
719 | .priv_data_size = sizeof(AVIContext), | |
720 | .audio_codec = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_AC3, | |
721 | .video_codec = AV_CODEC_ID_MPEG4, | |
722 | .write_header = avi_write_header, | |
723 | .write_packet = avi_write_packet, | |
724 | .write_trailer = avi_write_trailer, | |
725 | .codec_tag = (const AVCodecTag * const []) { | |
726 | ff_codec_bmp_tags, ff_codec_wav_tags, 0 | |
727 | }, | |
728 | }; |