FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavformat/avienc.c
Date: 2026-04-24 10:13:59
Exec Total Coverage
Lines: 440 586 75.1%
Functions: 14 16 87.5%
Branches: 191 311 61.4%
Line Branch Exec Source
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 #include <math.h>
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 "mux.h"
31 #include "rawutils.h"
32 #include "libavformat/avlanguage.h"
33 #include "libavutil/avstring.h"
34 #include "libavutil/avutil.h"
35 #include "libavutil/internal.h"
36 #include "libavutil/dict.h"
37 #include "libavutil/avassert.h"
38 #include "libavutil/mem.h"
39 #include "libavutil/timestamp.h"
40 #include "libavutil/opt.h"
41 #include "libavutil/pixdesc.h"
42 #include "libavcodec/raw.h"
43
44 /*
45 * TODO:
46 * - fill all fields if non streamed (nb_frames for example)
47 */
48
49 typedef struct AVIIentry {
50 char tag[4];
51 unsigned int flags;
52 unsigned int pos;
53 unsigned int len;
54 } AVIIentry;
55
56 #define AVI_INDEX_CLUSTER_SIZE 16384
57 #define AVI_MASTER_INDEX_PREFIX_SIZE (8+2+1+1+4+8+4+4)
58 #define AVI_MASTER_INDEX_ENTRY_SIZE 16 /* bytes per entry */
59 #define AVI_MASTER_INDEX_SIZE_DEFAULT 256 /* number of entries */
60
61 typedef struct AVIIndex {
62 int64_t indx_start;
63 int64_t audio_strm_offset;
64 int entry;
65 int ents_allocated;
66 int master_odml_riff_id_base;
67 AVIIentry** cluster;
68 } AVIIndex;
69
70 typedef struct AVIContext {
71 const AVClass *class;
72 AVPacket *empty_packet;
73 int64_t riff_start, movi_list, odml_list;
74 int64_t frames_hdr_all;
75 int riff_id;
76 int reserve_index_space;
77 int master_index_max_size;
78 int write_channel_mask;
79 int flipped_raw_rgb;
80 } AVIContext;
81
82 typedef struct AVIStream {
83 int64_t frames_hdr_strm;
84 int64_t audio_strm_length;
85 int packet_count;
86 int entry;
87 int max_size;
88 int sample_requested;
89
90 int64_t last_dts;
91
92 AVIIndex indexes;
93
94 int64_t strh_flags_offset;
95
96 uint32_t palette[AVPALETTE_COUNT];
97 uint32_t old_palette[AVPALETTE_COUNT];
98 int64_t pal_offset;
99 } AVIStream;
100
101 static int avi_write_packet_internal(AVFormatContext *s, AVPacket *pkt);
102
103 16797 static inline AVIIentry *avi_get_ientry(const AVIIndex *idx, int ent_id)
104 {
105 16797 int cl = ent_id / AVI_INDEX_CLUSTER_SIZE;
106 16797 int id = ent_id % AVI_INDEX_CLUSTER_SIZE;
107 16797 return &idx->cluster[cl][id];
108 }
109
110 15898 static int avi_add_ientry(AVFormatContext *s, int stream_index, char *tag,
111 unsigned int flags, unsigned int size)
112 {
113 15898 AVIContext *avi = s->priv_data;
114 15898 AVIOContext *pb = s->pb;
115 15898 AVIStream *avist = s->streams[stream_index]->priv_data;
116 15898 AVIIndex *idx = &avist->indexes;
117 15898 int cl = idx->entry / AVI_INDEX_CLUSTER_SIZE;
118 15898 int id = idx->entry % AVI_INDEX_CLUSTER_SIZE;
119
120
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 15898 if (idx->ents_allocated <= idx->entry) {
121 308 idx->cluster = av_realloc_f(idx->cluster, sizeof(void*), cl+1);
122
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 308 if (!idx->cluster) {
123 ✗ idx->ents_allocated = 0;
124 ✗ idx->entry = 0;
125 ✗ return AVERROR(ENOMEM);
126 }
127 616 idx->cluster[cl] =
128 308 av_malloc(AVI_INDEX_CLUSTER_SIZE * sizeof(AVIIentry));
129
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 308 if (!idx->cluster[cl])
130 ✗ return AVERROR(ENOMEM);
131 308 idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;
132 }
133
134
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 15898 if (tag)
135 2 memcpy(idx->cluster[cl][id].tag, tag, 4);
136 else
137 15896 memset(idx->cluster[cl][id].tag, 0, 4);
138 15898 idx->cluster[cl][id].flags = flags;
139 15898 idx->cluster[cl][id].pos = avio_tell(pb) - avi->movi_list;
140 15898 idx->cluster[cl][id].len = size;
141 15898 avist->max_size = FFMAX(avist->max_size, size);
142 15898 idx->entry++;
143
144 15898 return 0;
145 }
146
147 305 static av_cold int avi_init(struct AVFormatContext *s)
148 {
149 305 AVIContext *avi = s->priv_data;
150
151
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 305 if (avi->reserve_index_space > 0) {
152 ✗ avi->master_index_max_size = (avi->reserve_index_space - AVI_MASTER_INDEX_PREFIX_SIZE) / AVI_MASTER_INDEX_ENTRY_SIZE;
153 ✗ avi->master_index_max_size = FFMAX(avi->master_index_max_size, 16);
154 } else
155 305 avi->master_index_max_size = AVI_MASTER_INDEX_SIZE_DEFAULT;
156 305 av_log(s, AV_LOG_DEBUG, "reserve_index_space:%d master_index_max_size:%d\n",
157 avi->reserve_index_space, avi->master_index_max_size);
158
159 305 return 1; /* stream initialization continues in avi_write_header */
160 }
161
162 305 static int64_t avi_start_new_riff(AVFormatContext *s, AVIOContext *pb,
163 const char *riff_tag, const char *list_tag)
164 {
165 305 AVIContext *avi = s->priv_data;
166 int64_t loff;
167 int i;
168
169 305 avi->riff_id++;
170
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 613 for (i = 0; i < s->nb_streams; i++) {
171 308 AVIStream *avist = s->streams[i]->priv_data;
172 308 avist->indexes.audio_strm_offset = avist->audio_strm_length;
173 308 avist->indexes.entry = 0;
174 }
175
176 305 avi->riff_start = ff_start_tag(pb, "RIFF");
177 305 ffio_wfourcc(pb, riff_tag);
178 305 loff = ff_start_tag(pb, "LIST");
179 305 ffio_wfourcc(pb, list_tag);
180 305 return loff;
181 }
182
183 32102 static char *avi_stream2fourcc(char *tag, int index, enum AVMediaType type)
184 {
185 32102 tag[0] = '0' + index / 10;
186 32102 tag[1] = '0' + index % 10;
187
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 32102 if (type == AVMEDIA_TYPE_VIDEO) {
188 31691 tag[2] = 'd';
189 31691 tag[3] = 'c';
190
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 411 } else if (type == AVMEDIA_TYPE_SUBTITLE) {
191 // note: this is not an official code
192 ✗ tag[2] = 's';
193 ✗ tag[3] = 'b';
194 } else {
195 411 tag[2] = 'w';
196 411 tag[3] = 'b';
197 }
198 32102 tag[4] = '\0';
199 32102 return tag;
200 }
201
202 305 static int avi_write_counters(AVFormatContext *s, int riff_id)
203 {
204 305 AVIOContext *pb = s->pb;
205 305 AVIContext *avi = s->priv_data;
206 305 int n, au_byterate, au_ssize, au_scale, nb_frames = 0;
207 int64_t file_size;
208 AVCodecParameters *par;
209
210 305 file_size = avio_tell(pb);
211
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 613 for (n = 0; n < s->nb_streams; n++) {
212 308 AVIStream *avist = s->streams[n]->priv_data;
213
214
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 308 av_assert0(avist->frames_hdr_strm);
215 308 par = s->streams[n]->codecpar;
216 308 avio_seek(pb, avist->frames_hdr_strm, SEEK_SET);
217 308 ff_parse_specific_params(s->streams[n], &au_byterate, &au_ssize, &au_scale);
218
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 308 if (au_ssize == 0)
219 307 avio_wl32(pb, avist->packet_count);
220 else
221 1 avio_wl32(pb, avist->audio_strm_length / au_ssize);
222
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 308 if (par->codec_type == AVMEDIA_TYPE_VIDEO)
223 305 nb_frames = FFMAX(nb_frames, avist->packet_count);
224 }
225
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 305 if (riff_id == 1) {
226
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 305 av_assert0(avi->frames_hdr_all);
227 305 avio_seek(pb, avi->frames_hdr_all, SEEK_SET);
228 305 avio_wl32(pb, nb_frames);
229 }
230 305 avio_seek(pb, file_size, SEEK_SET);
231
232 305 return 0;
233 }
234
235 308 static void write_odml_master(AVFormatContext *s, int stream_index)
236 {
237 308 AVIOContext *pb = s->pb;
238 308 AVIContext *avi = s->priv_data;
239 308 AVStream *st = s->streams[stream_index];
240 308 AVCodecParameters *par = st->codecpar;
241 308 AVIStream *avist = st->priv_data;
242 unsigned char tag[5];
243
244 /* Starting to lay out AVI OpenDML master index.
245 * We want to make it JUNK entry for now, since we'd
246 * like to get away without making AVI an OpenDML one
247 * for compatibility reasons. */
248 308 avist->indexes.indx_start = ff_start_tag(pb, "JUNK");
249 308 avio_wl16(pb, 4); /* wLongsPerEntry */
250 308 avio_w8(pb, 0); /* bIndexSubType (0 == frame index) */
251 308 avio_w8(pb, 0); /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */
252 308 avio_wl32(pb, 0); /* nEntriesInUse (will fill out later on) */
253 308 ffio_wfourcc(pb, avi_stream2fourcc(tag, stream_index, par->codec_type));
254 /* dwChunkId */
255 308 ffio_fill(pb, 0, 3 * 4 /* dwReserved[3] */
256 308 + 16LL * avi->master_index_max_size);
257 308 ff_end_tag(pb, avist->indexes.indx_start);
258 308 }
259
260 305 static int avi_write_header(AVFormatContext *s)
261 {
262 305 AVIContext *avi = s->priv_data;
263 305 AVIOContext *pb = s->pb;
264 int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
265 305 int64_t max_stream_duration = 0;
266 AVCodecParameters *video_par;
267 305 AVStream *video_st = NULL;
268 int64_t list1, list2, strh, strf;
269 305 AVDictionaryEntry *t = NULL;
270 int padding;
271
272
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 305 if (s->nb_streams > AVI_MAX_STREAM_COUNT) {
273 ✗ av_log(s, AV_LOG_ERROR, "AVI does not support "
274 ">"AV_STRINGIFY(AVI_MAX_STREAM_COUNT)" streams\n");
275 ✗ return AVERROR(EINVAL);
276 }
277
278 305 avi->empty_packet = ffformatcontext(s)->pkt;
279
280
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 613 for (n = 0; n < s->nb_streams; n++) {
281 308 s->streams[n]->priv_data = av_mallocz(sizeof(AVIStream));
282
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 308 if (!s->streams[n]->priv_data)
283 ✗ return AVERROR(ENOMEM);
284 }
285
286 /* header list */
287 305 avi->riff_id = 0;
288 305 list1 = avi_start_new_riff(s, pb, "AVI ", "hdrl");
289
290 /* avi header */
291 305 ffio_wfourcc(pb, "avih");
292 305 avio_wl32(pb, 14 * 4);
293 305 bitrate = 0;
294
295 305 video_par = NULL;
296
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 613 for (n = 0; n < s->nb_streams; n++) {
297 308 AVCodecParameters *par = s->streams[n]->codecpar;
298 308 AVStream *st = s->streams[n];
299 308 bitrate = FFMIN(bitrate + par->bit_rate, INT32_MAX);
300
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 308 if (st->duration > 0) {
301 306 int64_t stream_duration = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
302 306 max_stream_duration = FFMAX(stream_duration, max_stream_duration);
303 }
304
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 308 if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
305 305 video_par = par;
306 305 video_st = st;
307 }
308 }
309
310 /* guess master index size based on bitrate and duration */
311
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 305 if (!avi->reserve_index_space) {
312 double duration_est, filesize_est;
313
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 305 if (s->duration > 0)
314 1 duration_est = (double)s->duration / AV_TIME_BASE;
315
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 304 else if (max_stream_duration > 0)
316 303 duration_est = (double)max_stream_duration / AV_TIME_BASE;
317 else
318 1 duration_est = 10 * 60 * 60; /* default to 10 hours */
319 305 filesize_est = duration_est * (bitrate / 8) * 1.10; /* add 10% safety margin for muxer+bitrate */
320
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 305 avi->master_index_max_size = FFMAX((int)ceil(filesize_est / AVI_MAX_RIFF_SIZE) + 1,
321 avi->master_index_max_size);
322 305 av_log(s, AV_LOG_DEBUG, "duration_est:%0.3f, filesize_est:%0.1fGiB, master_index_max_size:%d\n",
323 duration_est, filesize_est / (1024*1024*1024), avi->master_index_max_size);
324 }
325
326 305 nb_frames = 0;
327
328 // TODO: should be avg_frame_rate
329
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 305 if (video_st)
330 305 avio_wl32(pb, (uint32_t) (INT64_C(1000000) * video_st->time_base.num /
331 305 video_st->time_base.den));
332 else
333 ✗ avio_wl32(pb, 0);
334 305 avio_wl32(pb, bitrate / 8); /* XXX: not quite exact */
335 305 avio_wl32(pb, 0); /* padding */
336
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 305 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL))
337 ✗ avio_wl32(pb, AVIF_TRUSTCKTYPE | AVIF_ISINTERLEAVED); /* flags */
338 else
339 305 avio_wl32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */
340 305 avi->frames_hdr_all = avio_tell(pb); /* remember this offset to fill later */
341 305 avio_wl32(pb, nb_frames); /* nb frames, filled later */
342 305 avio_wl32(pb, 0); /* initial frame */
343 305 avio_wl32(pb, s->nb_streams); /* nb streams */
344 305 avio_wl32(pb, 1024 * 1024); /* suggested buffer size */
345
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 305 if (video_par) {
346 305 avio_wl32(pb, video_par->width);
347 305 avio_wl32(pb, video_par->height);
348 } else {
349 ✗ avio_wl32(pb, 0);
350 ✗ avio_wl32(pb, 0);
351 }
352 305 ffio_fill(pb, 0, 4 * 4); /* reserved */
353
354 /* stream list */
355
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 613 for (i = 0; i < n; i++) {
356 308 AVStream *st = s->streams[i];
357 308 AVCodecParameters *par = st->codecpar;
358 308 AVIStream *avist = st->priv_data;
359 308 list2 = ff_start_tag(pb, "LIST");
360 308 ffio_wfourcc(pb, "strl");
361
362 /* stream generic header */
363 308 strh = ff_start_tag(pb, "strh");
364
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 308 switch (par->codec_type) {
365 ✗ case AVMEDIA_TYPE_SUBTITLE:
366 // XSUB subtitles behave like video tracks, other subtitles
367 // are not (yet) supported.
368 ✗ if (par->codec_id != AV_CODEC_ID_XSUB) {
369 ✗ avpriv_report_missing_feature(s, "Subtitle streams other than DivX XSUB");
370 ✗ return AVERROR_PATCHWELCOME;
371 }
372 case AVMEDIA_TYPE_VIDEO:
373 305 ffio_wfourcc(pb, "vids");
374 305 break;
375 3 case AVMEDIA_TYPE_AUDIO:
376 3 ffio_wfourcc(pb, "auds");
377 3 break;
378 // case AVMEDIA_TYPE_TEXT:
379 // ffio_wfourcc(pb, "txts");
380 // break;
381 ✗ case AVMEDIA_TYPE_DATA:
382 ✗ ffio_wfourcc(pb, "dats");
383 ✗ break;
384 }
385
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 308 if (par->codec_type == AVMEDIA_TYPE_VIDEO ||
386
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 3 par->codec_id == AV_CODEC_ID_XSUB)
387 305 avio_wl32(pb, par->codec_tag);
388 else
389 3 avio_wl32(pb, 1);
390 308 avist->strh_flags_offset = avio_tell(pb);
391 308 avio_wl32(pb, 0); /* flags */
392 308 avio_wl16(pb, 0); /* priority */
393 308 avio_wl16(pb, 0); /* language */
394 308 avio_wl32(pb, 0); /* initial frame */
395
396 308 ff_parse_specific_params(st, &au_byterate, &au_ssize, &au_scale);
397
398
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 308 if ( par->codec_type == AVMEDIA_TYPE_VIDEO
399
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 305 && par->codec_id != AV_CODEC_ID_XSUB
400
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 305 && au_byterate > 1000LL*au_scale) {
401 1 au_byterate = 600;
402 1 au_scale = 1;
403 }
404 308 avpriv_set_pts_info(st, 64, au_scale, au_byterate);
405
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 308 if (par->codec_id == AV_CODEC_ID_XSUB)
406 ✗ au_scale = au_byterate = 0;
407
408 308 avio_wl32(pb, au_scale); /* scale */
409 308 avio_wl32(pb, au_byterate); /* rate */
410
411 308 avio_wl32(pb, 0); /* start */
412 /* remember this offset to fill later */
413 308 avist->frames_hdr_strm = avio_tell(pb);
414
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 308 if (!(pb->seekable & AVIO_SEEKABLE_NORMAL))
415 /* FIXME: this may be broken, but who cares */
416 ✗ avio_wl32(pb, AVI_MAX_RIFF_SIZE);
417 else
418 308 avio_wl32(pb, 0); /* length, XXX: filled later */
419
420 /* suggested buffer size, is set to largest chunk size in avi_write_trailer */
421
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 308 if (par->codec_type == AVMEDIA_TYPE_VIDEO)
422 305 avio_wl32(pb, 1024 * 1024);
423
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 3 else if (par->codec_type == AVMEDIA_TYPE_AUDIO)
424 3 avio_wl32(pb, 12 * 1024);
425 else
426 ✗ avio_wl32(pb, 0);
427 308 avio_wl32(pb, -1); /* quality */
428 308 avio_wl32(pb, au_ssize); /* sample size */
429 308 avio_wl32(pb, 0);
430
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 308 if (par->width > 65535 || par->height > 65535) {
431 ✗ av_log(s, AV_LOG_ERROR, "%dx%d dimensions are too big\n", par->width, par->height);
432 ✗ return AVERROR(EINVAL);
433 }
434 308 avio_wl16(pb, par->width);
435 308 avio_wl16(pb, par->height);
436 308 ff_end_tag(pb, strh);
437
438
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 308 if (par->codec_type != AVMEDIA_TYPE_DATA) {
439 int ret, flags;
440 enum AVPixelFormat pix_fmt;
441
442 308 strf = ff_start_tag(pb, "strf");
443
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 308 switch (par->codec_type) {
444 ✗ case AVMEDIA_TYPE_SUBTITLE:
445 /* XSUB subtitles behave like video tracks, other subtitles
446 * are not (yet) supported. */
447 ✗ if (par->codec_id != AV_CODEC_ID_XSUB)
448 ✗ break;
449 case AVMEDIA_TYPE_VIDEO:
450 /* WMP expects RGB 5:5:5 rawvideo in avi to have bpp set to 16. */
451
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 305 if ( !par->codec_tag
452
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 12 && par->codec_id == AV_CODEC_ID_RAWVIDEO
453
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 12 && par->format == AV_PIX_FMT_RGB555LE
454 ✗ && par->bits_per_coded_sample == 15)
455 ✗ par->bits_per_coded_sample = 16;
456 305 avist->pal_offset = avio_tell(pb) + 40;
457 305 ff_put_bmp_header(pb, par, 0, 0, avi->flipped_raw_rgb);
458 305 pix_fmt = avpriv_pix_fmt_find(PIX_FMT_LIST_AVI,
459 305 par->bits_per_coded_sample);
460
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 305 if ( !par->codec_tag
461
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 12 && par->codec_id == AV_CODEC_ID_RAWVIDEO
462
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 12 && par->format != pix_fmt
463
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 8 && par->format != AV_PIX_FMT_NONE)
464 8 av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written to avi, output file will be unreadable\n",
465 8 av_get_pix_fmt_name(par->format));
466
467
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 305 if (par->format == AV_PIX_FMT_PAL8) {
468
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 5 if (par->bits_per_coded_sample < 0 || par->bits_per_coded_sample > 8) {
469 ✗ av_log(s, AV_LOG_ERROR, "PAL8 with %d bps is not allowed\n", par->bits_per_coded_sample);
470 ✗ return AVERROR(EINVAL);
471 }
472 }
473
474 305 break;
475 3 case AVMEDIA_TYPE_AUDIO:
476
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 3 flags = (avi->write_channel_mask == 0) ? FF_PUT_WAV_HEADER_SKIP_CHANNELMASK : 0;
477
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 3 if ((ret = ff_put_wav_header(s, pb, par, flags)) < 0)
478 ✗ return ret;
479 3 break;
480 ✗ default:
481 ✗ av_log(s, AV_LOG_ERROR,
482 "Invalid or not supported codec type '%s' found in the input\n",
483 ✗ (char *)av_x_if_null(av_get_media_type_string(par->codec_type), "?"));
484 ✗ return AVERROR(EINVAL);
485 }
486 308 ff_end_tag(pb, strf);
487
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 308 if ((t = av_dict_get(st->metadata, "title", NULL, 0))) {
488 ✗ ff_riff_write_info_tag(s->pb, "strn", t->value);
489 ✗ t = NULL;
490 }
491
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 308 if (par->codec_id == AV_CODEC_ID_XSUB
492 ✗ && (t = av_dict_get(s->streams[i]->metadata, "language", NULL, 0))) {
493 ✗ const char* langstr = ff_convert_lang_to(t->value, AV_LANG_ISO639_1);
494 ✗ t = NULL;
495 ✗ if (langstr) {
496 ✗ char* str = av_asprintf("Subtitle - %s-xx;02", langstr);
497 ✗ if (!str)
498 ✗ return AVERROR(ENOMEM);
499 ✗ ff_riff_write_info_tag(s->pb, "strn", str);
500 ✗ av_free(str);
501 }
502 }
503 }
504
505
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 308 if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
506 308 write_odml_master(s, i);
507 }
508
509
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 308 if (par->codec_type == AVMEDIA_TYPE_VIDEO &&
510
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 305 st->sample_aspect_ratio.num > 0 &&
511
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 7 st->sample_aspect_ratio.den > 0) {
512 7 int vprp = ff_start_tag(pb, "vprp");
513 7 AVRational dar = av_mul_q(st->sample_aspect_ratio,
514 7 (AVRational) { par->width,
515 7 par->height });
516 int num, den, fields, i;
517 7 av_reduce(&num, &den, dar.num, dar.den, 0xFFFF);
518
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 7 if (par->field_order == AV_FIELD_TT || par->field_order == AV_FIELD_BB ||
519
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 6 par->field_order == AV_FIELD_TB || par->field_order == AV_FIELD_BT) {
520 1 fields = 2; // interlaced
521 } else {
522 6 fields = 1; // progressive
523 }
524
525 7 avio_wl32(pb, 0); // video format = unknown
526 7 avio_wl32(pb, 0); // video standard = unknown
527 // TODO: should be avg_frame_rate
528 7 avio_wl32(pb, (2LL*st->time_base.den + st->time_base.num - 1) / (2LL * st->time_base.num));
529 7 avio_wl32(pb, par->width);
530 7 avio_wl32(pb, par->height);
531 7 avio_wl16(pb, den);
532 7 avio_wl16(pb, num);
533 7 avio_wl32(pb, par->width);
534 7 avio_wl32(pb, par->height);
535 7 avio_wl32(pb, fields); // fields per frame
536
537
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 15 for (i = 0; i < fields; i++) {
538 int start_line;
539 // OpenDML v1.02 is not very specific on what value to use for
540 // start_line when frame data is not coming from a capturing device,
541 // so just use 0/1 depending on the field order for interlaced frames
542
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 8 if (par->field_order == AV_FIELD_TT || par->field_order == AV_FIELD_TB) {
543 2 start_line = (i == 0) ? 0 : 1;
544
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 6 } else if (par->field_order == AV_FIELD_BB || par->field_order == AV_FIELD_BT) {
545 ✗ start_line = (i == 0) ? 1 : 0;
546 } else {
547 6 start_line = 0;
548 }
549
550 8 avio_wl32(pb, par->height / fields); // compressed bitmap height
551 8 avio_wl32(pb, par->width); // compressed bitmap width
552 8 avio_wl32(pb, par->height / fields); // valid bitmap height
553 8 avio_wl32(pb, par->width); // valid bitmap width
554 8 avio_wl32(pb, 0); // valid bitmap X offset
555 8 avio_wl32(pb, 0); // valid bitmap Y offset
556 8 avio_wl32(pb, 0); // valid X offset in T
557 8 avio_wl32(pb, start_line); // valid Y start line
558 }
559 7 ff_end_tag(pb, vprp);
560 }
561
562 308 ff_end_tag(pb, list2);
563 }
564
565
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 305 if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
566 /* AVI could become an OpenDML one, if it grows beyond 2Gb range */
567 305 avi->odml_list = ff_start_tag(pb, "JUNK");
568 305 ffio_wfourcc(pb, "odml");
569 305 ffio_wfourcc(pb, "dmlh");
570 305 avio_wl32(pb, 248);
571 305 ffio_fill(pb, 0, 248);
572 305 ff_end_tag(pb, avi->odml_list);
573 }
574
575 305 ff_end_tag(pb, list1);
576
577 305 ff_riff_write_info(s);
578
579
580 305 padding = s->metadata_header_padding;
581
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 305 if (padding < 0)
582 305 padding = 1016;
583
584 /* some padding for easier tag editing */
585
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 305 if (padding) {
586 305 list2 = ff_start_tag(pb, "JUNK");
587 305 ffio_fill(pb, 0, FFALIGN((uint32_t)padding, 4));
588 305 ff_end_tag(pb, list2);
589 }
590
591 305 avi->movi_list = ff_start_tag(pb, "LIST");
592 305 ffio_wfourcc(pb, "movi");
593
594 305 return 0;
595 }
596
597 ✗ static void update_odml_entry(AVFormatContext *s, int stream_index, int64_t ix, int size)
598 {
599 ✗ AVIOContext *pb = s->pb;
600 ✗ AVIContext *avi = s->priv_data;
601 ✗ AVIStream *avist = s->streams[stream_index]->priv_data;
602 int64_t pos;
603 int au_byterate, au_ssize, au_scale;
604
605 ✗ pos = avio_tell(pb);
606
607 /* Updating one entry in the AVI OpenDML master index */
608 ✗ avio_seek(pb, avist->indexes.indx_start - 8, SEEK_SET);
609 ✗ ffio_wfourcc(pb, "indx"); /* enabling this entry */
610 ✗ avio_skip(pb, 8);
611 ✗ avio_wl32(pb, avi->riff_id - avist->indexes.master_odml_riff_id_base); /* nEntriesInUse */
612 ✗ avio_skip(pb, 16 * (avi->riff_id - avist->indexes.master_odml_riff_id_base));
613 ✗ avio_wl64(pb, ix); /* qwOffset */
614 ✗ avio_wl32(pb, size); /* dwSize */
615 ✗ ff_parse_specific_params(s->streams[stream_index], &au_byterate, &au_ssize, &au_scale);
616 ✗ if (s->streams[stream_index]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && au_ssize > 0) {
617 ✗ uint32_t audio_segm_size = (avist->audio_strm_length - avist->indexes.audio_strm_offset);
618 ✗ if ((audio_segm_size % au_ssize > 0) && !avist->sample_requested) {
619 ✗ avpriv_request_sample(s, "OpenDML index duration for audio packets with partial frames");
620 ✗ avist->sample_requested = 1;
621 }
622 ✗ avio_wl32(pb, audio_segm_size / au_ssize); /* dwDuration (sample count) */
623 } else
624 ✗ avio_wl32(pb, avist->indexes.entry); /* dwDuration (packet count) */
625
626 ✗ avio_seek(pb, pos, SEEK_SET);
627 ✗ }
628
629 ✗ static int avi_write_ix(AVFormatContext *s)
630 {
631 ✗ AVIOContext *pb = s->pb;
632 ✗ AVIContext *avi = s->priv_data;
633 char tag[5];
634 ✗ char ix_tag[] = "ix00";
635 int i, j;
636
637 ✗ av_assert0(pb->seekable & AVIO_SEEKABLE_NORMAL);
638
639 ✗ for (i = 0; i < s->nb_streams; i++) {
640 ✗ AVIStream *avist = s->streams[i]->priv_data;
641 ✗ if (avi->riff_id - avist->indexes.master_odml_riff_id_base == avi->master_index_max_size) {
642 int64_t pos;
643 ✗ int size = AVI_MASTER_INDEX_PREFIX_SIZE + AVI_MASTER_INDEX_ENTRY_SIZE * avi->master_index_max_size;
644
645 ✗ pos = avio_tell(pb);
646 ✗ update_odml_entry(s, i, pos, size);
647 ✗ write_odml_master(s, i);
648 av_assert1(avio_tell(pb) - pos == size);
649 ✗ avist->indexes.master_odml_riff_id_base = avi->riff_id - 1;
650 }
651 ✗ av_assert0(avi->riff_id - avist->indexes.master_odml_riff_id_base < avi->master_index_max_size);
652 }
653
654 ✗ for (i = 0; i < s->nb_streams; i++) {
655 ✗ AVIStream *avist = s->streams[i]->priv_data;
656 int64_t ix;
657
658 ✗ avi_stream2fourcc(tag, i, s->streams[i]->codecpar->codec_type);
659 ✗ ix_tag[3] = '0' + i;
660
661 /* Writing AVI OpenDML leaf index chunk */
662 ✗ ix = avio_tell(pb);
663 ✗ ffio_wfourcc(pb, ix_tag); /* ix?? */
664 ✗ avio_wl32(pb, avist->indexes.entry * 8 + 24);
665 /* chunk size */
666 ✗ avio_wl16(pb, 2); /* wLongsPerEntry */
667 ✗ avio_w8(pb, 0); /* bIndexSubType (0 == frame index) */
668 ✗ avio_w8(pb, 1); /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */
669 ✗ avio_wl32(pb, avist->indexes.entry);
670 /* nEntriesInUse */
671 ✗ ffio_wfourcc(pb, tag); /* dwChunkId */
672 ✗ avio_wl64(pb, avi->movi_list); /* qwBaseOffset */
673 ✗ avio_wl32(pb, 0); /* dwReserved_3 (must be 0) */
674
675 ✗ for (j = 0; j < avist->indexes.entry; j++) {
676 ✗ AVIIentry *ie = avi_get_ientry(&avist->indexes, j);
677 ✗ avio_wl32(pb, ie->pos + 8);
678 ✗ avio_wl32(pb, ((uint32_t) ie->len & ~0x80000000) |
679 ✗ (ie->flags & 0x10 ? 0 : 0x80000000));
680 }
681
682 ✗ update_odml_entry(s, i, ix, avio_tell(pb) - ix);
683 }
684 ✗ return 0;
685 }
686
687 305 static int avi_write_idx1(AVFormatContext *s)
688 {
689 305 AVIOContext *pb = s->pb;
690 305 AVIContext *avi = s->priv_data;
691 int64_t idx_chunk;
692 int i;
693 char tag[5];
694
695
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 305 if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
696 AVIStream *avist;
697 305 AVIIentry *ie = 0, *tie;
698 305 int empty, stream_id = -1;
699
700 305 idx_chunk = ff_start_tag(pb, "idx1");
701
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 613 for (i = 0; i < s->nb_streams; i++) {
702 308 avist = s->streams[i]->priv_data;
703 308 avist->entry = 0;
704 }
705
706 do {
707 16203 empty = 1;
708
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 33337 for (i = 0; i < s->nb_streams; i++) {
709 17134 avist = s->streams[i]->priv_data;
710
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 17134 if (avist->indexes.entry <= avist->entry)
711 337 continue;
712
713 16797 tie = avi_get_ientry(&avist->indexes, avist->entry);
714
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 16797 if (empty || tie->pos < ie->pos) {
715 16092 ie = tie;
716 16092 stream_id = i;
717 }
718 16797 empty = 0;
719 }
720
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 16203 if (!empty) {
721 15898 avist = s->streams[stream_id]->priv_data;
722
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 15898 if (*ie->tag)
723 2 ffio_wfourcc(pb, ie->tag);
724 else {
725 15896 avi_stream2fourcc(tag, stream_id,
726 15896 s->streams[stream_id]->codecpar->codec_type);
727 15896 ffio_wfourcc(pb, tag);
728 }
729 15898 avio_wl32(pb, ie->flags);
730 15898 avio_wl32(pb, ie->pos);
731 15898 avio_wl32(pb, ie->len);
732 15898 avist->entry++;
733 }
734
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 16203 } while (!empty);
735 305 ff_end_tag(pb, idx_chunk);
736
737 305 avi_write_counters(s, avi->riff_id);
738 }
739 305 return 0;
740 }
741
742 15641 static int write_skip_frames(AVFormatContext *s, int stream_index, int64_t dts)
743 {
744 15641 AVIContext *avi = s->priv_data;
745 15641 AVIStream *avist = s->streams[stream_index]->priv_data;
746 15641 AVCodecParameters *par = s->streams[stream_index]->codecpar;
747
748 ff_dlog(s, "dts:%s packet_count:%d stream_index:%d\n", av_ts2str(dts), avist->packet_count, stream_index);
749
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 31721 while (par->block_align == 0 && dts != AV_NOPTS_VALUE &&
750
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 32284 dts > avist->packet_count && par->codec_id != AV_CODEC_ID_XSUB && avist->packet_count) {
751
752
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 563 if (dts - avist->packet_count > 60000) {
753 ✗ av_log(s, AV_LOG_ERROR, "Too large number of skipped frames %"PRId64" > 60000\n", dts - avist->packet_count);
754 ✗ return AVERROR(EINVAL);
755 }
756
757 563 avi->empty_packet->stream_index = stream_index;
758 563 avi_write_packet_internal(s, avi->empty_packet);
759 ff_dlog(s, "dup dts:%s packet_count:%d\n", av_ts2str(dts), avist->packet_count);
760 }
761
762 15641 return 0;
763 }
764
765 15333 static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
766 {
767 15333 const int stream_index = pkt->stream_index;
768 15333 AVCodecParameters *par = s->streams[stream_index]->codecpar;
769 int ret;
770
771
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 15333 if (par->codec_id == AV_CODEC_ID_H264 && par->codec_tag == MKTAG('H','2','6','4') && pkt->size) {
772 79 ret = ff_check_h264_startcode(s, s->streams[stream_index], pkt);
773
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 79 if (ret < 0)
774 ✗ return ret;
775 }
776
777
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 15333 if ((ret = write_skip_frames(s, stream_index, pkt->dts)) < 0)
778 ✗ return ret;
779
780
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 15333 if (!pkt->size)
781 ✗ return avi_write_packet_internal(s, pkt); /* Passthrough */
782
783
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 15333 if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
784 15129 AVIStream *avist = s->streams[stream_index]->priv_data;
785 15129 AVIOContext *pb = s->pb;
786 15129 AVPacket *opkt = pkt;
787 int reshuffle_ret;
788
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 15729 if (par->codec_id == AV_CODEC_ID_RAWVIDEO && par->codec_tag == 0) {
789
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 600 int64_t bpc = par->bits_per_coded_sample != 15 ? par->bits_per_coded_sample : 16;
790 600 int expected_stride = ((par->width * bpc + 31) >> 5)*4;
791 600 reshuffle_ret = ff_reshuffle_raw_rgb(s, &pkt, par, expected_stride);
792
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 600 if (reshuffle_ret < 0)
793 ✗ return reshuffle_ret;
794 } else
795 14529 reshuffle_ret = 0;
796
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 15129 if (par->format == AV_PIX_FMT_PAL8) {
797 316 ret = ff_get_packet_palette(s, opkt, reshuffle_ret, avist->palette);
798
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 316 if (ret < 0)
799 ✗ goto fail;
800
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 316 if (ret) {
801 203 int pal_size = 1 << par->bits_per_coded_sample;
802 int pc_tag, i;
803
804
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 203 av_assert0(par->bits_per_coded_sample >= 0 && par->bits_per_coded_sample <= 8);
805
806
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 203 if ((pb->seekable & AVIO_SEEKABLE_NORMAL) && avist->pal_offset) {
807 5 int64_t cur_offset = avio_tell(pb);
808 5 avio_seek(pb, avist->pal_offset, SEEK_SET);
809
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 1285 for (i = 0; i < pal_size; i++) {
810 1280 uint32_t v = avist->palette[i];
811 1280 avio_wl32(pb, v & 0xffffff);
812 }
813 5 avio_seek(pb, cur_offset, SEEK_SET);
814 5 memcpy(avist->old_palette, avist->palette, pal_size * 4);
815 5 avist->pal_offset = 0;
816 }
817
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 203 if (memcmp(avist->palette, avist->old_palette, pal_size * 4)) {
818 unsigned char tag[5];
819 2 avi_stream2fourcc(tag, stream_index, par->codec_type);
820 2 tag[2] = 'p'; tag[3] = 'c';
821
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 2 if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
822
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 2 if (avist->strh_flags_offset) {
823 1 int64_t cur_offset = avio_tell(pb);
824 1 avio_seek(pb, avist->strh_flags_offset, SEEK_SET);
825 1 avio_wl32(pb, AVISF_VIDEO_PALCHANGES);
826 1 avio_seek(pb, cur_offset, SEEK_SET);
827 1 avist->strh_flags_offset = 0;
828 }
829 2 ret = avi_add_ientry(s, stream_index, tag, AVIIF_NO_TIME,
830 2 pal_size * 4 + 4);
831
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 2 if (ret < 0)
832 ✗ goto fail;
833 }
834 2 pc_tag = ff_start_tag(pb, tag);
835 2 avio_w8(pb, 0);
836 2 avio_w8(pb, pal_size & 0xFF);
837 2 avio_wl16(pb, 0); // reserved
838
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 514 for (i = 0; i < pal_size; i++) {
839 512 uint32_t v = avist->palette[i];
840 512 avio_wb32(pb, v<<8);
841 }
842 2 ff_end_tag(pb, pc_tag);
843 2 memcpy(avist->old_palette, avist->palette, pal_size * 4);
844 }
845 }
846 }
847
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 15129 if (reshuffle_ret) {
848 100 ret = avi_write_packet_internal(s, pkt);
849
850 100 fail:
851
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 100 if (reshuffle_ret)
852 100 av_packet_free(&pkt);
853 100 return ret;
854 }
855 }
856
857 15233 return avi_write_packet_internal(s, pkt);
858 }
859
860 15896 static int avi_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
861 {
862 unsigned char tag[5];
863 15896 unsigned int flags = 0;
864 15896 const int stream_index = pkt->stream_index;
865 15896 int size = pkt->size;
866 15896 AVIContext *avi = s->priv_data;
867 15896 AVIOContext *pb = s->pb;
868 15896 AVIStream *avist = s->streams[stream_index]->priv_data;
869 15896 AVCodecParameters *par = s->streams[stream_index]->codecpar;
870
871
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 15896 if (pkt->dts != AV_NOPTS_VALUE)
872 15333 avist->last_dts = pkt->dts + pkt->duration;
873
874 15896 avist->packet_count++;
875
876 // Make sure to put an OpenDML chunk when the file size exceeds the limits
877
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 15896 if ((pb->seekable & AVIO_SEEKABLE_NORMAL) &&
878
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 15896 (avio_tell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE)) {
879 ✗ avi_write_ix(s);
880 ✗ ff_end_tag(pb, avi->movi_list);
881
882 ✗ if (avi->riff_id == 1)
883 ✗ avi_write_idx1(s);
884
885 ✗ ff_end_tag(pb, avi->riff_start);
886 ✗ avi->movi_list = avi_start_new_riff(s, pb, "AVIX", "movi");
887 }
888
889 15896 avi_stream2fourcc(tag, stream_index, par->codec_type);
890
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 15896 if (pkt->flags & AV_PKT_FLAG_KEY)
891 9090 flags = 0x10;
892
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 15896 if (par->codec_type == AVMEDIA_TYPE_AUDIO)
893 204 avist->audio_strm_length += size;
894
895
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 15896 if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
896 int ret;
897 15896 ret = avi_add_ientry(s, stream_index, NULL, flags, size);
898
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 15896 if (ret < 0)
899 ✗ return ret;
900 }
901
902 15896 avio_write(pb, tag, 4);
903 15896 avio_wl32(pb, size);
904 15896 avio_write(pb, pkt->data, size);
905
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 15896 if (size & 1)
906 5098 avio_w8(pb, 0);
907
908 15896 return 0;
909 }
910
911 305 static int avi_write_trailer(AVFormatContext *s)
912 {
913 305 AVIContext *avi = s->priv_data;
914 305 AVIOContext *pb = s->pb;
915 305 int res = 0;
916 int i, n, nb_frames;
917 int64_t file_size;
918
919
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 613 for (i = 0; i < s->nb_streams; i++) {
920 308 AVIStream *avist = s->streams[i]->priv_data;
921 308 write_skip_frames(s, i, avist->last_dts);
922 }
923
924
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 305 if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
925
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 305 if (avi->riff_id == 1) {
926 305 ff_end_tag(pb, avi->movi_list);
927 305 res = avi_write_idx1(s);
928 305 ff_end_tag(pb, avi->riff_start);
929 } else {
930 ✗ avi_write_ix(s);
931 ✗ ff_end_tag(pb, avi->movi_list);
932 ✗ ff_end_tag(pb, avi->riff_start);
933
934 ✗ file_size = avio_tell(pb);
935 ✗ avio_seek(pb, avi->odml_list - 8, SEEK_SET);
936 ✗ ffio_wfourcc(pb, "LIST"); /* Making this AVI OpenDML one */
937 ✗ avio_skip(pb, 16);
938
939 ✗ for (n = nb_frames = 0; n < s->nb_streams; n++) {
940 ✗ AVCodecParameters *par = s->streams[n]->codecpar;
941 ✗ AVIStream *avist = s->streams[n]->priv_data;
942
943 ✗ if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
944 ✗ if (nb_frames < avist->packet_count)
945 ✗ nb_frames = avist->packet_count;
946 } else {
947 ✗ if (par->codec_id == AV_CODEC_ID_MP2 ||
948 ✗ par->codec_id == AV_CODEC_ID_MP3)
949 ✗ nb_frames += avist->packet_count;
950 }
951 }
952 ✗ avio_wl32(pb, nb_frames);
953 ✗ avio_seek(pb, file_size, SEEK_SET);
954
955 ✗ avi_write_counters(s, avi->riff_id);
956 }
957 }
958
959
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 305 if (avi->riff_id >= avi->master_index_max_size) {
960 ✗ int index_space = AVI_MASTER_INDEX_PREFIX_SIZE +
961 ✗ AVI_MASTER_INDEX_ENTRY_SIZE * avi->riff_id;
962 ✗ av_log(s, AV_LOG_WARNING, "Output file not strictly OpenDML compliant, "
963 "consider re-muxing with 'reserve_index_space' option value >= %d\n",
964 index_space);
965 }
966
967
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 613 for (i = 0; i < s->nb_streams; i++) {
968 308 AVIStream *avist = s->streams[i]->priv_data;
969
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 308 if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
970 308 avio_seek(pb, avist->frames_hdr_strm + 4, SEEK_SET);
971 308 avio_wl32(pb, avist->max_size);
972 }
973 }
974
975 305 return res;
976 }
977
978 305 static void avi_deinit(AVFormatContext *s)
979 {
980
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 613 for (int i = 0; i < s->nb_streams; i++) {
981 308 AVIStream *avist = s->streams[i]->priv_data;
982
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 308 if (!avist)
983 ✗ continue;
984
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 616 for (int j = 0; j < avist->indexes.ents_allocated / AVI_INDEX_CLUSTER_SIZE; j++)
985 308 av_freep(&avist->indexes.cluster[j]);
986 308 av_freep(&avist->indexes.cluster);
987 308 avist->indexes.ents_allocated = avist->indexes.entry = 0;
988 }
989 305 }
990
991 #define OFFSET(x) offsetof(AVIContext, x)
992 #define ENC AV_OPT_FLAG_ENCODING_PARAM
993 static const AVOption options[] = {
994 { "reserve_index_space", "reserve space (in bytes) at the beginning of the file for each stream index", OFFSET(reserve_index_space), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, ENC },
995 { "write_channel_mask", "write channel mask into wave format header", OFFSET(write_channel_mask), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, ENC },
996 { "flipped_raw_rgb", "Raw RGB bitmaps are stored bottom-up", OFFSET(flipped_raw_rgb), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
997 { NULL },
998 };
999
1000 static const AVClass avi_muxer_class = {
1001 .class_name = "AVI muxer",
1002 .item_name = av_default_item_name,
1003 .option = options,
1004 .version = LIBAVUTIL_VERSION_INT,
1005 };
1006
1007 const FFOutputFormat ff_avi_muxer = {
1008 .p.name = "avi",
1009 .p.long_name = NULL_IF_CONFIG_SMALL("AVI (Audio Video Interleaved)"),
1010 .p.mime_type = "video/x-msvideo",
1011 .p.extensions = "avi",
1012 .priv_data_size = sizeof(AVIContext),
1013 .p.audio_codec = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_AC3,
1014 .p.video_codec = AV_CODEC_ID_MPEG4,
1015 .init = avi_init,
1016 .deinit = avi_deinit,
1017 .write_header = avi_write_header,
1018 .write_packet = avi_write_packet,
1019 .write_trailer = avi_write_trailer,
1020 .p.codec_tag = ff_riff_codec_tags_list,
1021 .p.priv_class = &avi_muxer_class,
1022 };
1023