1 /*
2 * Image format
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 * Copyright (c) 2004 Michael Niedermayer
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #define _DEFAULT_SOURCE
24 #define _BSD_SOURCE
25 #include <sys/stat.h>
26 #include "libavutil/avstring.h"
27 #include "libavutil/log.h"
28 #include "libavutil/opt.h"
29 #include "libavutil/pixdesc.h"
30 #include "libavutil/parseutils.h"
31 #include "libavutil/intreadwrite.h"
32 #include "libavcodec/gif.h"
33 #include "avformat.h"
34 #include "avio_internal.h"
35 #include "internal.h"
36 #include "img2.h"
37 #include "libavcodec/mjpeg.h"
38 #include "libavcodec/xwd.h"
39 #include "subtitles.h"
40
41 #if HAVE_GLOB
42 /* Locally define as 0 (bitwise-OR no-op) any missing glob options that
43 are non-posix glibc/bsd extensions. */
44 #ifndef GLOB_NOMAGIC
45 #define GLOB_NOMAGIC 0
46 #endif
47 #ifndef GLOB_BRACE
48 #define GLOB_BRACE 0
49 #endif
50
51 #endif /* HAVE_GLOB */
52
53 static const int sizes[][2] = {
54 { 640, 480 },
55 { 720, 480 },
56 { 720, 576 },
57 { 352, 288 },
58 { 352, 240 },
59 { 160, 128 },
60 { 512, 384 },
61 { 640, 352 },
62 { 640, 240 },
63 };
64
infer_size(int * width_ptr,int * height_ptr,int size)65 static int infer_size(int *width_ptr, int *height_ptr, int size)
66 {
67 int i;
68
69 for (i = 0; i < FF_ARRAY_ELEMS(sizes); i++) {
70 if ((sizes[i][0] * sizes[i][1]) == size) {
71 *width_ptr = sizes[i][0];
72 *height_ptr = sizes[i][1];
73 return 0;
74 }
75 }
76
77 return -1;
78 }
79
is_glob(const char * path)80 static int is_glob(const char *path)
81 {
82 #if HAVE_GLOB
83 size_t span = 0;
84 const char *p = path;
85
86 while (p = strchr(p, '%')) {
87 if (*(++p) == '%') {
88 ++p;
89 continue;
90 }
91 if (span = strspn(p, "*?[]{}"))
92 break;
93 }
94 /* Did we hit a glob char or get to the end? */
95 return span != 0;
96 #else
97 return 0;
98 #endif
99 }
100
101 /**
102 * Get index range of image files matched by path.
103 *
104 * @param pfirst_index pointer to index updated with the first number in the range
105 * @param plast_index pointer to index updated with the last number in the range
106 * @param path path which has to be matched by the image files in the range
107 * @param start_index minimum accepted value for the first index in the range
108 * @return -1 if no image file could be found
109 */
find_image_range(AVIOContext * pb,int * pfirst_index,int * plast_index,const char * path,int start_index,int start_index_range)110 static int find_image_range(AVIOContext *pb, int *pfirst_index, int *plast_index,
111 const char *path, int start_index, int start_index_range)
112 {
113 char buf[1024];
114 int range, last_index, range1, first_index;
115
116 /* find the first image */
117 for (first_index = start_index; first_index < start_index + start_index_range; first_index++) {
118 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0) {
119 *pfirst_index =
120 *plast_index = 1;
121 if (pb || avio_check(buf, AVIO_FLAG_READ) > 0)
122 return 0;
123 return -1;
124 }
125 if (avio_check(buf, AVIO_FLAG_READ) > 0)
126 break;
127 }
128 if (first_index == start_index + start_index_range)
129 goto fail;
130
131 /* find the last image */
132 last_index = first_index;
133 for (;;) {
134 range = 0;
135 for (;;) {
136 if (!range)
137 range1 = 1;
138 else
139 range1 = 2 * range;
140 if (av_get_frame_filename(buf, sizeof(buf), path,
141 last_index + range1) < 0)
142 goto fail;
143 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
144 break;
145 range = range1;
146 /* just in case... */
147 if (range >= (1 << 30))
148 goto fail;
149 }
150 /* we are sure than image last_index + range exists */
151 if (!range)
152 break;
153 last_index += range;
154 }
155 *pfirst_index = first_index;
156 *plast_index = last_index;
157 return 0;
158
159 fail:
160 return -1;
161 }
162
img_read_probe(const AVProbeData * p)163 static int img_read_probe(const AVProbeData *p)
164 {
165 if (p->filename && ff_guess_image2_codec(p->filename)) {
166 if (av_filename_number_test(p->filename))
167 return AVPROBE_SCORE_MAX;
168 else if (is_glob(p->filename))
169 return AVPROBE_SCORE_MAX;
170 else if (p->filename[strcspn(p->filename, "*?{")]) // probably PT_GLOB
171 return AVPROBE_SCORE_EXTENSION + 2; // score chosen to be a tad above the image pipes
172 else if (p->buf_size == 0)
173 return 0;
174 else if (av_match_ext(p->filename, "raw") || av_match_ext(p->filename, "gif"))
175 return 5;
176 else
177 return AVPROBE_SCORE_EXTENSION;
178 }
179 return 0;
180 }
181
ff_img_read_header(AVFormatContext * s1)182 int ff_img_read_header(AVFormatContext *s1)
183 {
184 VideoDemuxData *s = s1->priv_data;
185 int first_index = 1, last_index = 1;
186 AVStream *st;
187 enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE;
188
189 s1->ctx_flags |= AVFMTCTX_NOHEADER;
190
191 st = avformat_new_stream(s1, NULL);
192 if (!st) {
193 return AVERROR(ENOMEM);
194 }
195
196 if (s->pixel_format &&
197 (pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) {
198 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n",
199 s->pixel_format);
200 return AVERROR(EINVAL);
201 }
202
203 av_strlcpy(s->path, s1->url, sizeof(s->path));
204 s->img_number = 0;
205 s->img_count = 0;
206
207 /* find format */
208 if (s1->iformat->flags & AVFMT_NOFILE)
209 s->is_pipe = 0;
210 else {
211 s->is_pipe = 1;
212 st->need_parsing = AVSTREAM_PARSE_FULL;
213 }
214
215 if (s->ts_from_file == 2) {
216 #if !HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
217 av_log(s1, AV_LOG_ERROR, "POSIX.1-2008 not supported, nanosecond file timestamps unavailable\n");
218 return AVERROR(ENOSYS);
219 #endif
220 avpriv_set_pts_info(st, 64, 1, 1000000000);
221 } else if (s->ts_from_file)
222 avpriv_set_pts_info(st, 64, 1, 1);
223 else {
224 avpriv_set_pts_info(st, 64, s->framerate.den, s->framerate.num);
225 st->avg_frame_rate = s->framerate;
226 }
227
228 if (s->width && s->height) {
229 st->codecpar->width = s->width;
230 st->codecpar->height = s->height;
231 }
232
233 if (!s->is_pipe) {
234 if (s->pattern_type == PT_DEFAULT) {
235 if (s1->pb) {
236 s->pattern_type = PT_NONE;
237 } else
238 s->pattern_type = PT_GLOB_SEQUENCE;
239 }
240
241 if (s->pattern_type == PT_GLOB_SEQUENCE) {
242 s->use_glob = is_glob(s->path);
243 if (s->use_glob) {
244 #if HAVE_GLOB
245 char *p = s->path, *q, *dup;
246 int gerr;
247 #endif
248
249 av_log(s1, AV_LOG_WARNING, "Pattern type 'glob_sequence' is deprecated: "
250 "use pattern_type 'glob' instead\n");
251 #if HAVE_GLOB
252 dup = q = av_strdup(p);
253 while (*q) {
254 /* Do we have room for the next char and a \ insertion? */
255 if ((p - s->path) >= (sizeof(s->path) - 2))
256 break;
257 if (*q == '%' && strspn(q + 1, "%*?[]{}"))
258 ++q;
259 else if (strspn(q, "\\*?[]{}"))
260 *p++ = '\\';
261 *p++ = *q++;
262 }
263 *p = 0;
264 av_free(dup);
265
266 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
267 if (gerr != 0) {
268 return AVERROR(ENOENT);
269 }
270 first_index = 0;
271 last_index = s->globstate.gl_pathc - 1;
272 #endif
273 }
274 }
275 if ((s->pattern_type == PT_GLOB_SEQUENCE && !s->use_glob) || s->pattern_type == PT_SEQUENCE) {
276 if (find_image_range(s1->pb, &first_index, &last_index, s->path,
277 s->start_number, s->start_number_range) < 0) {
278 av_log(s1, AV_LOG_ERROR,
279 "Could find no file with path '%s' and index in the range %d-%d\n",
280 s->path, s->start_number, s->start_number + s->start_number_range - 1);
281 return AVERROR(ENOENT);
282 }
283 } else if (s->pattern_type == PT_GLOB) {
284 #if HAVE_GLOB
285 int gerr;
286 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
287 if (gerr != 0) {
288 return AVERROR(ENOENT);
289 }
290 first_index = 0;
291 last_index = s->globstate.gl_pathc - 1;
292 s->use_glob = 1;
293 #else
294 av_log(s1, AV_LOG_ERROR,
295 "Pattern type 'glob' was selected but globbing "
296 "is not supported by this libavformat build\n");
297 return AVERROR(ENOSYS);
298 #endif
299 } else if (s->pattern_type != PT_GLOB_SEQUENCE && s->pattern_type != PT_NONE) {
300 av_log(s1, AV_LOG_ERROR,
301 "Unknown value '%d' for pattern_type option\n", s->pattern_type);
302 return AVERROR(EINVAL);
303 }
304 s->img_first = first_index;
305 s->img_last = last_index;
306 s->img_number = first_index;
307 /* compute duration */
308 if (!s->ts_from_file) {
309 st->start_time = 0;
310 st->duration = last_index - first_index + 1;
311 }
312 }
313
314 if (s1->video_codec_id) {
315 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
316 st->codecpar->codec_id = s1->video_codec_id;
317 } else if (s1->audio_codec_id) {
318 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
319 st->codecpar->codec_id = s1->audio_codec_id;
320 } else if (s1->iformat->raw_codec_id) {
321 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
322 st->codecpar->codec_id = s1->iformat->raw_codec_id;
323 } else {
324 const char *str = strrchr(s->path, '.');
325 s->split_planes = str && !av_strcasecmp(str + 1, "y");
326 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
327 if (s1->pb) {
328 int probe_buffer_size = 2048;
329 uint8_t *probe_buffer = av_realloc(NULL, probe_buffer_size + AVPROBE_PADDING_SIZE);
330 const AVInputFormat *fmt = NULL;
331 void *fmt_iter = NULL;
332 AVProbeData pd = { 0 };
333
334 if (!probe_buffer)
335 return AVERROR(ENOMEM);
336
337 probe_buffer_size = avio_read(s1->pb, probe_buffer, probe_buffer_size);
338 if (probe_buffer_size < 0) {
339 av_free(probe_buffer);
340 return probe_buffer_size;
341 }
342 memset(probe_buffer + probe_buffer_size, 0, AVPROBE_PADDING_SIZE);
343
344 pd.buf = probe_buffer;
345 pd.buf_size = probe_buffer_size;
346 pd.filename = s1->url;
347
348 while ((fmt = av_demuxer_iterate(&fmt_iter))) {
349 if (fmt->read_header != ff_img_read_header ||
350 !fmt->read_probe ||
351 (fmt->flags & AVFMT_NOFILE) ||
352 !fmt->raw_codec_id)
353 continue;
354 if (fmt->read_probe(&pd) > 0) {
355 st->codecpar->codec_id = fmt->raw_codec_id;
356 break;
357 }
358 }
359 if (s1->flags & AVFMT_FLAG_CUSTOM_IO) {
360 avio_seek(s1->pb, 0, SEEK_SET);
361 av_freep(&probe_buffer);
362 } else
363 ffio_rewind_with_probe_data(s1->pb, &probe_buffer, probe_buffer_size);
364 }
365 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
366 st->codecpar->codec_id = ff_guess_image2_codec(s->path);
367 if (st->codecpar->codec_id == AV_CODEC_ID_LJPEG)
368 st->codecpar->codec_id = AV_CODEC_ID_MJPEG;
369 if (st->codecpar->codec_id == AV_CODEC_ID_ALIAS_PIX) // we cannot distingiush this from BRENDER_PIX
370 st->codecpar->codec_id = AV_CODEC_ID_NONE;
371 }
372 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
373 pix_fmt != AV_PIX_FMT_NONE)
374 st->codecpar->format = pix_fmt;
375
376 return 0;
377 }
378
379 /**
380 * Add this frame's source path and basename to packet's sidedata
381 * as a dictionary, so it can be used by filters like 'drawtext'.
382 */
add_filename_as_pkt_side_data(char * filename,AVPacket * pkt)383 static int add_filename_as_pkt_side_data(char *filename, AVPacket *pkt) {
384 AVDictionary *d = NULL;
385 char *packed_metadata = NULL;
386 buffer_size_t metadata_len;
387 int ret;
388
389 av_dict_set(&d, "lavf.image2dec.source_path", filename, 0);
390 av_dict_set(&d, "lavf.image2dec.source_basename", av_basename(filename), 0);
391
392 packed_metadata = av_packet_pack_dictionary(d, &metadata_len);
393 av_dict_free(&d);
394 if (!packed_metadata)
395 return AVERROR(ENOMEM);
396 ret = av_packet_add_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA,
397 packed_metadata, metadata_len);
398 if (ret < 0) {
399 av_freep(&packed_metadata);
400 return ret;
401 }
402 return 0;
403 }
404
ff_img_read_packet(AVFormatContext * s1,AVPacket * pkt)405 int ff_img_read_packet(AVFormatContext *s1, AVPacket *pkt)
406 {
407 VideoDemuxData *s = s1->priv_data;
408 char filename_bytes[1024];
409 char *filename = filename_bytes;
410 int i, res;
411 int size[3] = { 0 }, ret[3] = { 0 };
412 AVIOContext *f[3] = { NULL };
413 AVCodecParameters *par = s1->streams[0]->codecpar;
414
415 if (!s->is_pipe) {
416 /* loop over input */
417 if (s->loop && s->img_number > s->img_last) {
418 s->img_number = s->img_first;
419 }
420 if (s->img_number > s->img_last)
421 return AVERROR_EOF;
422 if (s->pattern_type == PT_NONE) {
423 av_strlcpy(filename_bytes, s->path, sizeof(filename_bytes));
424 } else if (s->use_glob) {
425 #if HAVE_GLOB
426 filename = s->globstate.gl_pathv[s->img_number];
427 #endif
428 } else {
429 if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
430 s->path,
431 s->img_number) < 0 && s->img_number > 1)
432 return AVERROR(EIO);
433 }
434 for (i = 0; i < 3; i++) {
435 if (s1->pb &&
436 !strcmp(filename_bytes, s->path) &&
437 !s->loop &&
438 !s->split_planes) {
439 f[i] = s1->pb;
440 } else if (s1->io_open(s1, &f[i], filename, AVIO_FLAG_READ, NULL) < 0) {
441 if (i >= 1)
442 break;
443 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",
444 filename);
445 return AVERROR(EIO);
446 }
447 size[i] = avio_size(f[i]);
448
449 if (!s->split_planes)
450 break;
451 filename[strlen(filename) - 1] = 'U' + i;
452 }
453
454 if (par->codec_id == AV_CODEC_ID_NONE) {
455 AVProbeData pd = { 0 };
456 const AVInputFormat *ifmt;
457 uint8_t header[PROBE_BUF_MIN + AVPROBE_PADDING_SIZE];
458 int ret;
459 int score = 0;
460
461 ret = avio_read(f[0], header, PROBE_BUF_MIN);
462 if (ret < 0)
463 return ret;
464 memset(header + ret, 0, sizeof(header) - ret);
465 avio_skip(f[0], -ret);
466 pd.buf = header;
467 pd.buf_size = ret;
468 pd.filename = filename;
469
470 ifmt = av_probe_input_format3(&pd, 1, &score);
471 if (ifmt && ifmt->read_packet == ff_img_read_packet && ifmt->raw_codec_id)
472 par->codec_id = ifmt->raw_codec_id;
473 }
474
475 if (par->codec_id == AV_CODEC_ID_RAWVIDEO && !par->width)
476 infer_size(&par->width, &par->height, size[0]);
477 } else {
478 f[0] = s1->pb;
479 if (avio_feof(f[0]) && s->loop && s->is_pipe)
480 avio_seek(f[0], 0, SEEK_SET);
481 if (avio_feof(f[0]))
482 return AVERROR_EOF;
483 if (s->frame_size > 0) {
484 size[0] = s->frame_size;
485 } else if (!s1->streams[0]->parser) {
486 size[0] = avio_size(s1->pb);
487 } else {
488 size[0] = 4096;
489 }
490 }
491
492 res = av_new_packet(pkt, size[0] + size[1] + size[2]);
493 if (res < 0) {
494 goto fail;
495 }
496 pkt->stream_index = 0;
497 pkt->flags |= AV_PKT_FLAG_KEY;
498 if (s->ts_from_file) {
499 struct stat img_stat;
500 if (stat(filename, &img_stat)) {
501 res = AVERROR(EIO);
502 goto fail;
503 }
504 pkt->pts = (int64_t)img_stat.st_mtime;
505 #if HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
506 if (s->ts_from_file == 2)
507 pkt->pts = 1000000000*pkt->pts + img_stat.st_mtim.tv_nsec;
508 #endif
509 av_add_index_entry(s1->streams[0], s->img_number, pkt->pts, 0, 0, AVINDEX_KEYFRAME);
510 } else if (!s->is_pipe) {
511 pkt->pts = s->pts;
512 }
513
514 if (s->is_pipe)
515 pkt->pos = avio_tell(f[0]);
516
517 /*
518 * export_path_metadata must be explicitly enabled via
519 * command line options for path metadata to be exported
520 * as packet side_data.
521 */
522 if (!s->is_pipe && s->export_path_metadata == 1) {
523 res = add_filename_as_pkt_side_data(filename, pkt);
524 if (res < 0)
525 goto fail;
526 }
527
528 pkt->size = 0;
529 for (i = 0; i < 3; i++) {
530 if (f[i]) {
531 ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
532 if (s->loop && s->is_pipe && ret[i] == AVERROR_EOF) {
533 if (avio_seek(f[i], 0, SEEK_SET) >= 0) {
534 pkt->pos = 0;
535 ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
536 }
537 }
538 if (!s->is_pipe && f[i] != s1->pb)
539 ff_format_io_close(s1, &f[i]);
540 if (ret[i] > 0)
541 pkt->size += ret[i];
542 }
543 }
544
545 if (ret[0] <= 0 || ret[1] < 0 || ret[2] < 0) {
546 if (ret[0] < 0) {
547 res = ret[0];
548 } else if (ret[1] < 0) {
549 res = ret[1];
550 } else if (ret[2] < 0) {
551 res = ret[2];
552 } else {
553 res = AVERROR_EOF;
554 }
555 goto fail;
556 } else {
557 s->img_count++;
558 s->img_number++;
559 s->pts++;
560 return 0;
561 }
562
563 fail:
564 if (!s->is_pipe) {
565 for (i = 0; i < 3; i++) {
566 if (f[i] != s1->pb)
567 ff_format_io_close(s1, &f[i]);
568 }
569 }
570 return res;
571 }
572
img_read_close(struct AVFormatContext * s1)573 static int img_read_close(struct AVFormatContext* s1)
574 {
575 #if HAVE_GLOB
576 VideoDemuxData *s = s1->priv_data;
577 if (s->use_glob) {
578 globfree(&s->globstate);
579 }
580 #endif
581 return 0;
582 }
583
img_read_seek(AVFormatContext * s,int stream_index,int64_t timestamp,int flags)584 static int img_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
585 {
586 VideoDemuxData *s1 = s->priv_data;
587 AVStream *st = s->streams[0];
588
589 if (s1->ts_from_file) {
590 int index = av_index_search_timestamp(st, timestamp, flags);
591 if(index < 0)
592 return -1;
593 s1->img_number = st->index_entries[index].pos;
594 return 0;
595 }
596
597 if (timestamp < 0 || !s1->loop && timestamp > s1->img_last - s1->img_first)
598 return -1;
599 s1->img_number = timestamp%(s1->img_last - s1->img_first + 1) + s1->img_first;
600 s1->pts = timestamp;
601 return 0;
602 }
603
604 #define OFFSET(x) offsetof(VideoDemuxData, x)
605 #define DEC AV_OPT_FLAG_DECODING_PARAM
606 #define COMMON_OPTIONS \
607 { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, DEC }, \
608 { "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, \
609 { "video_size", "set video size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, DEC }, \
610 { "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, DEC }, \
611 { NULL },
612
613 #if CONFIG_IMAGE2_DEMUXER
614 const AVOption ff_img_options[] = {
615 { "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_DEFAULT}, 0, INT_MAX, DEC, "pattern_type"},
616 { "glob_sequence","select glob/sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
617 { "glob", "select glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB }, INT_MIN, INT_MAX, DEC, "pattern_type" },
618 { "sequence", "select sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_SEQUENCE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
619 { "none", "disable pattern matching", 0, AV_OPT_TYPE_CONST, {.i64=PT_NONE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
620 { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, DEC },
621 { "start_number_range", "set range for looking at the first sequence number", OFFSET(start_number_range), AV_OPT_TYPE_INT, {.i64 = 5}, 1, INT_MAX, DEC },
622 { "ts_from_file", "set frame timestamp from file's one", OFFSET(ts_from_file), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 2, DEC, "ts_type" },
623 { "none", "none", 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, 0, 2, DEC, "ts_type" },
624 { "sec", "second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, 0, 2, DEC, "ts_type" },
625 { "ns", "nano second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 2 }, 0, 2, DEC, "ts_type" },
626 { "export_path_metadata", "enable metadata containing input path information", OFFSET(export_path_metadata), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, DEC }, \
627 COMMON_OPTIONS
628 };
629
630 static const AVClass img2_class = {
631 .class_name = "image2 demuxer",
632 .item_name = av_default_item_name,
633 .option = ff_img_options,
634 .version = LIBAVUTIL_VERSION_INT,
635 };
636 AVInputFormat ff_image2_demuxer = {
637 .name = "image2",
638 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
639 .priv_data_size = sizeof(VideoDemuxData),
640 .read_probe = img_read_probe,
641 .read_header = ff_img_read_header,
642 .read_packet = ff_img_read_packet,
643 .read_close = img_read_close,
644 .read_seek = img_read_seek,
645 .flags = AVFMT_NOFILE,
646 .priv_class = &img2_class,
647 };
648 #endif
649
650 const AVOption ff_img2pipe_options[] = {
651 { "frame_size", "force frame size in bytes", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
652 COMMON_OPTIONS
653 };
654
655 #if CONFIG_IMAGE2PIPE_DEMUXER
656 static const AVClass img2pipe_class = {
657 .class_name = "image2pipe demuxer",
658 .item_name = av_default_item_name,
659 .option = ff_img2pipe_options,
660 .version = LIBAVUTIL_VERSION_INT,
661 };
662 AVInputFormat ff_image2pipe_demuxer = {
663 .name = "image2pipe",
664 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
665 .priv_data_size = sizeof(VideoDemuxData),
666 .read_header = ff_img_read_header,
667 .read_packet = ff_img_read_packet,
668 .priv_class = &img2pipe_class,
669 };
670 #endif
671
bmp_probe(const AVProbeData * p)672 static int bmp_probe(const AVProbeData *p)
673 {
674 const uint8_t *b = p->buf;
675 int ihsize;
676
677 if (AV_RB16(b) != 0x424d)
678 return 0;
679
680 ihsize = AV_RL32(b+14);
681 if (ihsize < 12 || ihsize > 255)
682 return 0;
683
684 if (!AV_RN32(b + 6)) {
685 return AVPROBE_SCORE_EXTENSION + 1;
686 }
687 return AVPROBE_SCORE_EXTENSION / 4;
688 }
689
cri_probe(const AVProbeData * p)690 static int cri_probe(const AVProbeData *p)
691 {
692 const uint8_t *b = p->buf;
693
694 if ( AV_RL32(b) == 1
695 && AV_RL32(b + 4) == 4
696 && AV_RN32(b + 8) == AV_RN32("DVCC"))
697 return AVPROBE_SCORE_MAX - 1;
698 return 0;
699 }
700
dds_probe(const AVProbeData * p)701 static int dds_probe(const AVProbeData *p)
702 {
703 const uint8_t *b = p->buf;
704
705 if ( AV_RB64(b) == 0x444453207c000000
706 && AV_RL32(b + 8)
707 && AV_RL32(b + 12))
708 return AVPROBE_SCORE_MAX - 1;
709 return 0;
710 }
711
dpx_probe(const AVProbeData * p)712 static int dpx_probe(const AVProbeData *p)
713 {
714 const uint8_t *b = p->buf;
715 int w, h;
716 int is_big = (AV_RN32(b) == AV_RN32("SDPX"));
717
718 if (p->buf_size < 0x304+8)
719 return 0;
720 w = is_big ? AV_RB32(p->buf + 0x304) : AV_RL32(p->buf + 0x304);
721 h = is_big ? AV_RB32(p->buf + 0x308) : AV_RL32(p->buf + 0x308);
722 if (w <= 0 || h <= 0)
723 return 0;
724
725 if (is_big || AV_RN32(b) == AV_RN32("XPDS"))
726 return AVPROBE_SCORE_EXTENSION + 1;
727 return 0;
728 }
729
exr_probe(const AVProbeData * p)730 static int exr_probe(const AVProbeData *p)
731 {
732 const uint8_t *b = p->buf;
733
734 if (AV_RL32(b) == 20000630)
735 return AVPROBE_SCORE_EXTENSION + 1;
736 return 0;
737 }
738
j2k_probe(const AVProbeData * p)739 static int j2k_probe(const AVProbeData *p)
740 {
741 const uint8_t *b = p->buf;
742
743 if (AV_RB64(b) == 0x0000000c6a502020 ||
744 AV_RB32(b) == 0xff4fff51)
745 return AVPROBE_SCORE_EXTENSION + 1;
746 return 0;
747 }
748
jpeg_probe(const AVProbeData * p)749 static int jpeg_probe(const AVProbeData *p)
750 {
751 const uint8_t *b = p->buf;
752 int i, state = SOI;
753
754 if (AV_RB16(b) != 0xFFD8 ||
755 AV_RB32(b) == 0xFFD8FFF7)
756 return 0;
757
758 b += 2;
759 for (i = 0; i < p->buf_size - 3; i++) {
760 int c;
761 if (b[i] != 0xFF)
762 continue;
763 c = b[i + 1];
764 switch (c) {
765 case SOI:
766 return 0;
767 case SOF0:
768 case SOF1:
769 case SOF2:
770 case SOF3:
771 case SOF5:
772 case SOF6:
773 case SOF7:
774 i += AV_RB16(&b[i + 2]) + 1;
775 if (state != SOI)
776 return 0;
777 state = SOF0;
778 break;
779 case SOS:
780 i += AV_RB16(&b[i + 2]) + 1;
781 if (state != SOF0 && state != SOS)
782 return 0;
783 state = SOS;
784 break;
785 case EOI:
786 if (state != SOS)
787 return 0;
788 state = EOI;
789 break;
790 case DQT:
791 case APP0:
792 case APP1:
793 case APP2:
794 case APP3:
795 case APP4:
796 case APP5:
797 case APP6:
798 case APP7:
799 case APP8:
800 case APP9:
801 case APP10:
802 case APP11:
803 case APP12:
804 case APP13:
805 case APP14:
806 case APP15:
807 case COM:
808 i += AV_RB16(&b[i + 2]) + 1;
809 break;
810 default:
811 if ( (c > TEM && c < SOF0)
812 || c == JPG)
813 return 0;
814 }
815 }
816
817 if (state == EOI)
818 return AVPROBE_SCORE_EXTENSION + 1;
819 if (state == SOS)
820 return AVPROBE_SCORE_EXTENSION / 2;
821 return AVPROBE_SCORE_EXTENSION / 8 + 1;
822 }
823
jpegls_probe(const AVProbeData * p)824 static int jpegls_probe(const AVProbeData *p)
825 {
826 const uint8_t *b = p->buf;
827
828 if (AV_RB32(b) == 0xffd8fff7)
829 return AVPROBE_SCORE_EXTENSION + 1;
830 return 0;
831 }
832
pcx_probe(const AVProbeData * p)833 static int pcx_probe(const AVProbeData *p)
834 {
835 const uint8_t *b = p->buf;
836
837 if ( p->buf_size < 128
838 || b[0] != 10
839 || b[1] > 5
840 || b[2] > 1
841 || av_popcount(b[3]) != 1 || b[3] > 8
842 || AV_RL16(&b[4]) > AV_RL16(&b[8])
843 || AV_RL16(&b[6]) > AV_RL16(&b[10])
844 || b[64])
845 return 0;
846 b += 73;
847 while (++b < p->buf + 128)
848 if (*b)
849 return AVPROBE_SCORE_EXTENSION / 4;
850
851 return AVPROBE_SCORE_EXTENSION + 1;
852 }
853
qdraw_probe(const AVProbeData * p)854 static int qdraw_probe(const AVProbeData *p)
855 {
856 const uint8_t *b = p->buf;
857
858 if ( p->buf_size >= 528
859 && (AV_RB64(b + 520) & 0xFFFFFFFFFFFF) == 0x001102ff0c00
860 && AV_RB16(b + 520)
861 && AV_RB16(b + 518))
862 return AVPROBE_SCORE_MAX * 3 / 4;
863 if ( (AV_RB64(b + 8) & 0xFFFFFFFFFFFF) == 0x001102ff0c00
864 && AV_RB16(b + 8)
865 && AV_RB16(b + 6))
866 return AVPROBE_SCORE_EXTENSION / 4;
867 return 0;
868 }
869
pictor_probe(const AVProbeData * p)870 static int pictor_probe(const AVProbeData *p)
871 {
872 const uint8_t *b = p->buf;
873
874 if (AV_RL16(b) == 0x1234)
875 return AVPROBE_SCORE_EXTENSION / 4;
876 return 0;
877 }
878
png_probe(const AVProbeData * p)879 static int png_probe(const AVProbeData *p)
880 {
881 const uint8_t *b = p->buf;
882
883 if (AV_RB64(b) == 0x89504e470d0a1a0a)
884 return AVPROBE_SCORE_MAX - 1;
885 return 0;
886 }
887
psd_probe(const AVProbeData * p)888 static int psd_probe(const AVProbeData *p)
889 {
890 const uint8_t *b = p->buf;
891 int ret = 0;
892 uint16_t color_mode;
893
894 if (AV_RL32(b) == MKTAG('8','B','P','S')) {
895 ret += 1;
896 } else {
897 return 0;
898 }
899
900 if ((b[4] == 0) && (b[5] == 1)) {/* version 1 is PSD, version 2 is PSB */
901 ret += 1;
902 } else {
903 return 0;
904 }
905
906 if ((AV_RL32(b+6) == 0) && (AV_RL16(b+10) == 0))/* reserved must be 0 */
907 ret += 1;
908
909 color_mode = AV_RB16(b+24);
910 if ((color_mode <= 9) && (color_mode != 5) && (color_mode != 6))
911 ret += 1;
912
913 return AVPROBE_SCORE_EXTENSION + ret;
914 }
915
sgi_probe(const AVProbeData * p)916 static int sgi_probe(const AVProbeData *p)
917 {
918 const uint8_t *b = p->buf;
919
920 if (AV_RB16(b) == 474 &&
921 (b[2] & ~1) == 0 &&
922 (b[3] & ~3) == 0 && b[3] &&
923 (AV_RB16(b + 4) & ~7) == 0 && AV_RB16(b + 4))
924 return AVPROBE_SCORE_EXTENSION + 1;
925 return 0;
926 }
927
sunrast_probe(const AVProbeData * p)928 static int sunrast_probe(const AVProbeData *p)
929 {
930 const uint8_t *b = p->buf;
931
932 if (AV_RB32(b) == 0x59a66a95)
933 return AVPROBE_SCORE_EXTENSION + 1;
934 return 0;
935 }
936
svg_probe(const AVProbeData * p)937 static int svg_probe(const AVProbeData *p)
938 {
939 const uint8_t *b = p->buf;
940 const uint8_t *end = p->buf + p->buf_size;
941
942 if (memcmp(p->buf, "<?xml", 5))
943 return 0;
944 while (b < end) {
945 int inc = ff_subtitles_next_line(b);
946 if (!inc)
947 break;
948 b += inc;
949 if (b >= end - 4)
950 return 0;
951 if (!memcmp(b, "<svg", 4))
952 return AVPROBE_SCORE_EXTENSION + 1;
953 }
954 return 0;
955 }
956
tiff_probe(const AVProbeData * p)957 static int tiff_probe(const AVProbeData *p)
958 {
959 const uint8_t *b = p->buf;
960
961 if (AV_RB32(b) == 0x49492a00 ||
962 AV_RB32(b) == 0x4D4D002a)
963 return AVPROBE_SCORE_EXTENSION + 1;
964 return 0;
965 }
966
webp_probe(const AVProbeData * p)967 static int webp_probe(const AVProbeData *p)
968 {
969 const uint8_t *b = p->buf;
970
971 if (AV_RB32(b) == 0x52494646 &&
972 AV_RB32(b + 8) == 0x57454250)
973 return AVPROBE_SCORE_MAX - 1;
974 return 0;
975 }
976
pnm_magic_check(const AVProbeData * p,int magic)977 static int pnm_magic_check(const AVProbeData *p, int magic)
978 {
979 const uint8_t *b = p->buf;
980
981 return b[0] == 'P' && b[1] == magic + '0';
982 }
983
pnm_probe(const AVProbeData * p)984 static inline int pnm_probe(const AVProbeData *p)
985 {
986 const uint8_t *b = p->buf;
987
988 while (b[2] == '\r')
989 b++;
990 if (b[2] == '\n' && (b[3] == '#' || (b[3] >= '0' && b[3] <= '9')))
991 return AVPROBE_SCORE_EXTENSION + 2;
992 return 0;
993 }
994
pbm_probe(const AVProbeData * p)995 static int pbm_probe(const AVProbeData *p)
996 {
997 return pnm_magic_check(p, 1) || pnm_magic_check(p, 4) || pnm_magic_check(p, 22) || pnm_magic_check(p, 54) ? pnm_probe(p) : 0;
998 }
999
pgmx_probe(const AVProbeData * p)1000 static inline int pgmx_probe(const AVProbeData *p)
1001 {
1002 return pnm_magic_check(p, 2) || pnm_magic_check(p, 5) ? pnm_probe(p) : 0;
1003 }
1004
pgm_probe(const AVProbeData * p)1005 static int pgm_probe(const AVProbeData *p)
1006 {
1007 int ret = pgmx_probe(p);
1008 return ret && !av_match_ext(p->filename, "pgmyuv") ? ret : 0;
1009 }
1010
pgmyuv_probe(const AVProbeData * p)1011 static int pgmyuv_probe(const AVProbeData *p) // custom FFmpeg format recognized by file extension
1012 {
1013 int ret = pgmx_probe(p);
1014 return ret && av_match_ext(p->filename, "pgmyuv") ? ret : 0;
1015 }
1016
pgx_probe(const AVProbeData * p)1017 static int pgx_probe(const AVProbeData *p)
1018 {
1019 const uint8_t *b = p->buf;
1020 if (!memcmp(b, "PG ML ", 6))
1021 return AVPROBE_SCORE_EXTENSION + 1;
1022 return 0;
1023 }
1024
ppm_probe(const AVProbeData * p)1025 static int ppm_probe(const AVProbeData *p)
1026 {
1027 return pnm_magic_check(p, 3) || pnm_magic_check(p, 6) ? pnm_probe(p) : 0;
1028 }
1029
pam_probe(const AVProbeData * p)1030 static int pam_probe(const AVProbeData *p)
1031 {
1032 return pnm_magic_check(p, 7) ? pnm_probe(p) : 0;
1033 }
1034
xbm_probe(const AVProbeData * p)1035 static int xbm_probe(const AVProbeData *p)
1036 {
1037 if (!memcmp(p->buf, "/* XBM X10 format */", 20))
1038 return AVPROBE_SCORE_MAX;
1039
1040 if (!memcmp(p->buf, "#define", 7))
1041 return AVPROBE_SCORE_MAX - 1;
1042 return 0;
1043 }
1044
xpm_probe(const AVProbeData * p)1045 static int xpm_probe(const AVProbeData *p)
1046 {
1047 const uint8_t *b = p->buf;
1048
1049 if (AV_RB64(b) == 0x2f2a2058504d202a && *(b+8) == '/')
1050 return AVPROBE_SCORE_MAX - 1;
1051 return 0;
1052 }
1053
xwd_probe(const AVProbeData * p)1054 static int xwd_probe(const AVProbeData *p)
1055 {
1056 const uint8_t *b = p->buf;
1057 unsigned width, bpp, bpad, lsize;
1058
1059 if ( p->buf_size < XWD_HEADER_SIZE
1060 || AV_RB32(b ) < XWD_HEADER_SIZE // header size
1061 || AV_RB32(b + 4) != XWD_VERSION // version
1062 || AV_RB32(b + 8) != XWD_Z_PIXMAP // format
1063 || AV_RB32(b + 12) > 32 || !AV_RB32(b + 12) // depth
1064 || AV_RB32(b + 16) == 0 // width
1065 || AV_RB32(b + 20) == 0 // height
1066 || AV_RB32(b + 28) > 1 // byteorder
1067 || AV_RB32(b + 32) & ~56 || av_popcount(AV_RB32(b + 32)) != 1 // bitmap unit
1068 || AV_RB32(b + 36) > 1 // bitorder
1069 || AV_RB32(b + 40) & ~56 || av_popcount(AV_RB32(b + 40)) != 1 // padding
1070 || AV_RB32(b + 44) > 32 || !AV_RB32(b + 44) // bpp
1071 || AV_RB32(b + 68) > 256) // colours
1072 return 0;
1073
1074 width = AV_RB32(b + 16);
1075 bpad = AV_RB32(b + 40);
1076 bpp = AV_RB32(b + 44);
1077 lsize = AV_RB32(b + 48);
1078 if (lsize < FFALIGN(width * bpp, bpad) >> 3)
1079 return 0;
1080
1081 return AVPROBE_SCORE_MAX / 2 + 1;
1082 }
1083
gif_probe(const AVProbeData * p)1084 static int gif_probe(const AVProbeData *p)
1085 {
1086 /* check magick */
1087 if (memcmp(p->buf, gif87a_sig, 6) && memcmp(p->buf, gif89a_sig, 6))
1088 return 0;
1089
1090 /* width or height contains zero? */
1091 if (!AV_RL16(&p->buf[6]) || !AV_RL16(&p->buf[8]))
1092 return 0;
1093
1094 return AVPROBE_SCORE_MAX - 1;
1095 }
1096
photocd_probe(const AVProbeData * p)1097 static int photocd_probe(const AVProbeData *p)
1098 {
1099 if (!memcmp(p->buf, "PCD_OPA", 7))
1100 return AVPROBE_SCORE_MAX - 1;
1101
1102 if (p->buf_size < 0x807 || memcmp(p->buf + 0x800, "PCD_IPI", 7))
1103 return 0;
1104
1105 return AVPROBE_SCORE_MAX - 1;
1106 }
1107
1108 #define IMAGEAUTO_DEMUXER(imgname, codecid)\
1109 static const AVClass imgname ## _class = {\
1110 .class_name = AV_STRINGIFY(imgname) " demuxer",\
1111 .item_name = av_default_item_name,\
1112 .option = ff_img2pipe_options,\
1113 .version = LIBAVUTIL_VERSION_INT,\
1114 };\
1115 AVInputFormat ff_image_ ## imgname ## _pipe_demuxer = {\
1116 .name = AV_STRINGIFY(imgname) "_pipe",\
1117 .long_name = NULL_IF_CONFIG_SMALL("piped " AV_STRINGIFY(imgname) " sequence"),\
1118 .priv_data_size = sizeof(VideoDemuxData),\
1119 .read_probe = imgname ## _probe,\
1120 .read_header = ff_img_read_header,\
1121 .read_packet = ff_img_read_packet,\
1122 .priv_class = & imgname ## _class,\
1123 .flags = AVFMT_GENERIC_INDEX, \
1124 .raw_codec_id = codecid,\
1125 };
1126
1127 IMAGEAUTO_DEMUXER(bmp, AV_CODEC_ID_BMP)
1128 IMAGEAUTO_DEMUXER(cri, AV_CODEC_ID_CRI)
1129 IMAGEAUTO_DEMUXER(dds, AV_CODEC_ID_DDS)
1130 IMAGEAUTO_DEMUXER(dpx, AV_CODEC_ID_DPX)
1131 IMAGEAUTO_DEMUXER(exr, AV_CODEC_ID_EXR)
1132 IMAGEAUTO_DEMUXER(gif, AV_CODEC_ID_GIF)
1133 IMAGEAUTO_DEMUXER(j2k, AV_CODEC_ID_JPEG2000)
1134 IMAGEAUTO_DEMUXER(jpeg, AV_CODEC_ID_MJPEG)
1135 IMAGEAUTO_DEMUXER(jpegls, AV_CODEC_ID_JPEGLS)
1136 IMAGEAUTO_DEMUXER(pam, AV_CODEC_ID_PAM)
1137 IMAGEAUTO_DEMUXER(pbm, AV_CODEC_ID_PBM)
1138 IMAGEAUTO_DEMUXER(pcx, AV_CODEC_ID_PCX)
1139 IMAGEAUTO_DEMUXER(pgm, AV_CODEC_ID_PGM)
1140 IMAGEAUTO_DEMUXER(pgmyuv, AV_CODEC_ID_PGMYUV)
1141 IMAGEAUTO_DEMUXER(pgx, AV_CODEC_ID_PGX)
1142 IMAGEAUTO_DEMUXER(photocd, AV_CODEC_ID_PHOTOCD)
1143 IMAGEAUTO_DEMUXER(pictor, AV_CODEC_ID_PICTOR)
1144 IMAGEAUTO_DEMUXER(png, AV_CODEC_ID_PNG)
1145 IMAGEAUTO_DEMUXER(ppm, AV_CODEC_ID_PPM)
1146 IMAGEAUTO_DEMUXER(psd, AV_CODEC_ID_PSD)
1147 IMAGEAUTO_DEMUXER(qdraw, AV_CODEC_ID_QDRAW)
1148 IMAGEAUTO_DEMUXER(sgi, AV_CODEC_ID_SGI)
1149 IMAGEAUTO_DEMUXER(sunrast, AV_CODEC_ID_SUNRAST)
1150 IMAGEAUTO_DEMUXER(svg, AV_CODEC_ID_SVG)
1151 IMAGEAUTO_DEMUXER(tiff, AV_CODEC_ID_TIFF)
1152 IMAGEAUTO_DEMUXER(webp, AV_CODEC_ID_WEBP)
1153 IMAGEAUTO_DEMUXER(xbm, AV_CODEC_ID_XBM)
1154 IMAGEAUTO_DEMUXER(xpm, AV_CODEC_ID_XPM)
1155 IMAGEAUTO_DEMUXER(xwd, AV_CODEC_ID_XWD)
1156