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img2dec.c
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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 "avformat.h"
33 #include "avio_internal.h"
34 #include "internal.h"
35 #include "img2.h"
36 #include "libavcodec/mjpeg.h"
37 #include "subtitles.h"
38 
39 #if HAVE_GLOB
40 /* Locally define as 0 (bitwise-OR no-op) any missing glob options that
41  are non-posix glibc/bsd extensions. */
42 #ifndef GLOB_NOMAGIC
43 #define GLOB_NOMAGIC 0
44 #endif
45 #ifndef GLOB_BRACE
46 #define GLOB_BRACE 0
47 #endif
48 
49 #endif /* HAVE_GLOB */
50 
51 static const int sizes[][2] = {
52  { 640, 480 },
53  { 720, 480 },
54  { 720, 576 },
55  { 352, 288 },
56  { 352, 240 },
57  { 160, 128 },
58  { 512, 384 },
59  { 640, 352 },
60  { 640, 240 },
61 };
62 
63 static int infer_size(int *width_ptr, int *height_ptr, int size)
64 {
65  int i;
66 
67  for (i = 0; i < FF_ARRAY_ELEMS(sizes); i++) {
68  if ((sizes[i][0] * sizes[i][1]) == size) {
69  *width_ptr = sizes[i][0];
70  *height_ptr = sizes[i][1];
71  return 0;
72  }
73  }
74 
75  return -1;
76 }
77 
78 static int is_glob(const char *path)
79 {
80 #if HAVE_GLOB
81  size_t span = 0;
82  const char *p = path;
83 
84  while (p = strchr(p, '%')) {
85  if (*(++p) == '%') {
86  ++p;
87  continue;
88  }
89  if (span = strspn(p, "*?[]{}"))
90  break;
91  }
92  /* Did we hit a glob char or get to the end? */
93  return span != 0;
94 #else
95  return 0;
96 #endif
97 }
98 
99 /**
100  * Get index range of image files matched by path.
101  *
102  * @param pfirst_index pointer to index updated with the first number in the range
103  * @param plast_index pointer to index updated with the last number in the range
104  * @param path path which has to be matched by the image files in the range
105  * @param start_index minimum accepted value for the first index in the range
106  * @return -1 if no image file could be found
107  */
108 static int find_image_range(AVIOContext *pb, int *pfirst_index, int *plast_index,
109  const char *path, int start_index, int start_index_range)
110 {
111  char buf[1024];
112  int range, last_index, range1, first_index;
113 
114  /* find the first image */
115  for (first_index = start_index; first_index < start_index + start_index_range; first_index++) {
116  if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0) {
117  *pfirst_index =
118  *plast_index = 1;
119  if (pb || avio_check(buf, AVIO_FLAG_READ) > 0)
120  return 0;
121  return -1;
122  }
123  if (avio_check(buf, AVIO_FLAG_READ) > 0)
124  break;
125  }
126  if (first_index == start_index + start_index_range)
127  goto fail;
128 
129  /* find the last image */
130  last_index = first_index;
131  for (;;) {
132  range = 0;
133  for (;;) {
134  if (!range)
135  range1 = 1;
136  else
137  range1 = 2 * range;
138  if (av_get_frame_filename(buf, sizeof(buf), path,
139  last_index + range1) < 0)
140  goto fail;
141  if (avio_check(buf, AVIO_FLAG_READ) <= 0)
142  break;
143  range = range1;
144  /* just in case... */
145  if (range >= (1 << 30))
146  goto fail;
147  }
148  /* we are sure than image last_index + range exists */
149  if (!range)
150  break;
151  last_index += range;
152  }
153  *pfirst_index = first_index;
154  *plast_index = last_index;
155  return 0;
156 
157 fail:
158  return -1;
159 }
160 
162 {
163  if (p->filename && ff_guess_image2_codec(p->filename)) {
165  return AVPROBE_SCORE_MAX;
166  else if (is_glob(p->filename))
167  return AVPROBE_SCORE_MAX;
168  else if (p->filename[strcspn(p->filename, "*?{")]) // probably PT_GLOB
169  return AVPROBE_SCORE_EXTENSION + 2; // score chosen to be a tad above the image pipes
170  else if (p->buf_size == 0)
171  return 0;
172  else if (av_match_ext(p->filename, "raw") || av_match_ext(p->filename, "gif"))
173  return 5;
174  else
176  }
177  return 0;
178 }
179 
181 {
182  VideoDemuxData *s = s1->priv_data;
183  int first_index = 1, last_index = 1;
184  AVStream *st;
186 
188 
189  st = avformat_new_stream(s1, NULL);
190  if (!st) {
191  return AVERROR(ENOMEM);
192  }
193 
194  if (s->pixel_format &&
195  (pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) {
196  av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n",
197  s->pixel_format);
198  return AVERROR(EINVAL);
199  }
200 
201  av_strlcpy(s->path, s1->filename, sizeof(s->path));
202  s->img_number = 0;
203  s->img_count = 0;
204 
205  /* find format */
206  if (s1->iformat->flags & AVFMT_NOFILE)
207  s->is_pipe = 0;
208  else {
209  s->is_pipe = 1;
211  }
212 
213  if (s->ts_from_file == 2) {
214 #if !HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
215  av_log(s1, AV_LOG_ERROR, "POSIX.1-2008 not supported, nanosecond file timestamps unavailable\n");
216  return AVERROR(ENOSYS);
217 #endif
218  avpriv_set_pts_info(st, 64, 1, 1000000000);
219  } else if (s->ts_from_file)
220  avpriv_set_pts_info(st, 64, 1, 1);
221  else
223 
224  if (s->width && s->height) {
225  st->codecpar->width = s->width;
226  st->codecpar->height = s->height;
227  }
228 
229  if (!s->is_pipe) {
230  if (s->pattern_type == PT_DEFAULT) {
231  if (s1->pb) {
232  s->pattern_type = PT_NONE;
233  } else
235  }
236 
237  if (s->pattern_type == PT_GLOB_SEQUENCE) {
238  s->use_glob = is_glob(s->path);
239  if (s->use_glob) {
240 #if HAVE_GLOB
241  char *p = s->path, *q, *dup;
242  int gerr;
243 #endif
244 
245  av_log(s1, AV_LOG_WARNING, "Pattern type 'glob_sequence' is deprecated: "
246  "use pattern_type 'glob' instead\n");
247 #if HAVE_GLOB
248  dup = q = av_strdup(p);
249  while (*q) {
250  /* Do we have room for the next char and a \ insertion? */
251  if ((p - s->path) >= (sizeof(s->path) - 2))
252  break;
253  if (*q == '%' && strspn(q + 1, "%*?[]{}"))
254  ++q;
255  else if (strspn(q, "\\*?[]{}"))
256  *p++ = '\\';
257  *p++ = *q++;
258  }
259  *p = 0;
260  av_free(dup);
261 
262  gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
263  if (gerr != 0) {
264  return AVERROR(ENOENT);
265  }
266  first_index = 0;
267  last_index = s->globstate.gl_pathc - 1;
268 #endif
269  }
270  }
271  if ((s->pattern_type == PT_GLOB_SEQUENCE && !s->use_glob) || s->pattern_type == PT_SEQUENCE) {
272  if (find_image_range(s1->pb, &first_index, &last_index, s->path,
273  s->start_number, s->start_number_range) < 0) {
274  av_log(s1, AV_LOG_ERROR,
275  "Could find no file with path '%s' and index in the range %d-%d\n",
276  s->path, s->start_number, s->start_number + s->start_number_range - 1);
277  return AVERROR(ENOENT);
278  }
279  } else if (s->pattern_type == PT_GLOB) {
280 #if HAVE_GLOB
281  int gerr;
282  gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
283  if (gerr != 0) {
284  return AVERROR(ENOENT);
285  }
286  first_index = 0;
287  last_index = s->globstate.gl_pathc - 1;
288  s->use_glob = 1;
289 #else
290  av_log(s1, AV_LOG_ERROR,
291  "Pattern type 'glob' was selected but globbing "
292  "is not supported by this libavformat build\n");
293  return AVERROR(ENOSYS);
294 #endif
295  } else if (s->pattern_type != PT_GLOB_SEQUENCE && s->pattern_type != PT_NONE) {
296  av_log(s1, AV_LOG_ERROR,
297  "Unknown value '%d' for pattern_type option\n", s->pattern_type);
298  return AVERROR(EINVAL);
299  }
300  s->img_first = first_index;
301  s->img_last = last_index;
302  s->img_number = first_index;
303  /* compute duration */
304  if (!s->ts_from_file) {
305  st->start_time = 0;
306  st->duration = last_index - first_index + 1;
307  }
308  }
309 
310  if (s1->video_codec_id) {
312  st->codecpar->codec_id = s1->video_codec_id;
313  } else if (s1->audio_codec_id) {
315  st->codecpar->codec_id = s1->audio_codec_id;
316  } else if (s1->iformat->raw_codec_id) {
319  } else {
320  const char *str = strrchr(s->path, '.');
321  s->split_planes = str && !av_strcasecmp(str + 1, "y");
323  if (s1->pb) {
324  int probe_buffer_size = 2048;
325  uint8_t *probe_buffer = av_realloc(NULL, probe_buffer_size + AVPROBE_PADDING_SIZE);
327  AVProbeData pd = { 0 };
328 
329  if (!probe_buffer)
330  return AVERROR(ENOMEM);
331 
332  probe_buffer_size = avio_read(s1->pb, probe_buffer, probe_buffer_size);
333  if (probe_buffer_size < 0) {
334  av_free(probe_buffer);
335  return probe_buffer_size;
336  }
337  memset(probe_buffer + probe_buffer_size, 0, AVPROBE_PADDING_SIZE);
338 
339  pd.buf = probe_buffer;
340  pd.buf_size = probe_buffer_size;
341  pd.filename = s1->filename;
342 
343  while ((fmt = av_iformat_next(fmt))) {
344  if (fmt->read_header != ff_img_read_header ||
345  !fmt->read_probe ||
346  (fmt->flags & AVFMT_NOFILE) ||
347  !fmt->raw_codec_id)
348  continue;
349  if (fmt->read_probe(&pd) > 0) {
350  st->codecpar->codec_id = fmt->raw_codec_id;
351  break;
352  }
353  }
354  if (s1->flags & AVFMT_FLAG_CUSTOM_IO) {
355  avio_seek(s1->pb, 0, SEEK_SET);
356  } else
357  ffio_rewind_with_probe_data(s1->pb, &probe_buffer, probe_buffer_size);
358  }
359  if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
361  if (st->codecpar->codec_id == AV_CODEC_ID_LJPEG)
363  if (st->codecpar->codec_id == AV_CODEC_ID_ALIAS_PIX) // we cannot distingiush this from BRENDER_PIX
365  }
366  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
367  pix_fmt != AV_PIX_FMT_NONE)
368  st->codecpar->format = pix_fmt;
369 
370  return 0;
371 }
372 
374 {
375  VideoDemuxData *s = s1->priv_data;
376  char filename_bytes[1024];
377  char *filename = filename_bytes;
378  int i, res;
379  int size[3] = { 0 }, ret[3] = { 0 };
380  AVIOContext *f[3] = { NULL };
381  AVCodecParameters *par = s1->streams[0]->codecpar;
382 
383  if (!s->is_pipe) {
384  /* loop over input */
385  if (s->loop && s->img_number > s->img_last) {
386  s->img_number = s->img_first;
387  }
388  if (s->img_number > s->img_last)
389  return AVERROR_EOF;
390  if (s->pattern_type == PT_NONE) {
391  av_strlcpy(filename_bytes, s->path, sizeof(filename_bytes));
392  } else if (s->use_glob) {
393 #if HAVE_GLOB
394  filename = s->globstate.gl_pathv[s->img_number];
395 #endif
396  } else {
397  if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
398  s->path,
399  s->img_number) < 0 && s->img_number > 1)
400  return AVERROR(EIO);
401  }
402  for (i = 0; i < 3; i++) {
403  if (s1->pb &&
404  !strcmp(filename_bytes, s->path) &&
405  !s->loop &&
406  !s->split_planes) {
407  f[i] = s1->pb;
408  } else if (s1->io_open(s1, &f[i], filename, AVIO_FLAG_READ, NULL) < 0) {
409  if (i >= 1)
410  break;
411  av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",
412  filename);
413  return AVERROR(EIO);
414  }
415  size[i] = avio_size(f[i]);
416 
417  if (!s->split_planes)
418  break;
419  filename[strlen(filename) - 1] = 'U' + i;
420  }
421 
422  if (par->codec_id == AV_CODEC_ID_NONE) {
423  AVProbeData pd = { 0 };
424  AVInputFormat *ifmt;
426  int ret;
427  int score = 0;
428 
429  ret = avio_read(f[0], header, PROBE_BUF_MIN);
430  if (ret < 0)
431  return ret;
432  memset(header + ret, 0, sizeof(header) - ret);
433  avio_skip(f[0], -ret);
434  pd.buf = header;
435  pd.buf_size = ret;
436  pd.filename = filename;
437 
438  ifmt = av_probe_input_format3(&pd, 1, &score);
439  if (ifmt && ifmt->read_packet == ff_img_read_packet && ifmt->raw_codec_id)
440  par->codec_id = ifmt->raw_codec_id;
441  }
442 
443  if (par->codec_id == AV_CODEC_ID_RAWVIDEO && !par->width)
444  infer_size(&par->width, &par->height, size[0]);
445  } else {
446  f[0] = s1->pb;
447  if (avio_feof(f[0]) && s->loop && s->is_pipe)
448  avio_seek(f[0], 0, SEEK_SET);
449  if (avio_feof(f[0]))
450  return AVERROR_EOF;
451  if (s->frame_size > 0) {
452  size[0] = s->frame_size;
453  } else if (!s1->streams[0]->parser) {
454  size[0] = avio_size(s1->pb);
455  } else {
456  size[0] = 4096;
457  }
458  }
459 
460  res = av_new_packet(pkt, size[0] + size[1] + size[2]);
461  if (res < 0) {
462  goto fail;
463  }
464  pkt->stream_index = 0;
465  pkt->flags |= AV_PKT_FLAG_KEY;
466  if (s->ts_from_file) {
467  struct stat img_stat;
468  if (stat(filename, &img_stat)) {
469  res = AVERROR(EIO);
470  goto fail;
471  }
472  pkt->pts = (int64_t)img_stat.st_mtime;
473 #if HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
474  if (s->ts_from_file == 2)
475  pkt->pts = 1000000000*pkt->pts + img_stat.st_mtim.tv_nsec;
476 #endif
477  av_add_index_entry(s1->streams[0], s->img_number, pkt->pts, 0, 0, AVINDEX_KEYFRAME);
478  } else if (!s->is_pipe) {
479  pkt->pts = s->pts;
480  }
481 
482  if (s->is_pipe)
483  pkt->pos = avio_tell(f[0]);
484 
485  pkt->size = 0;
486  for (i = 0; i < 3; i++) {
487  if (f[i]) {
488  ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
489  if (s->loop && s->is_pipe && ret[i] == AVERROR_EOF) {
490  if (avio_seek(f[i], 0, SEEK_SET) >= 0) {
491  pkt->pos = 0;
492  ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
493  }
494  }
495  if (!s->is_pipe && f[i] != s1->pb)
496  ff_format_io_close(s1, &f[i]);
497  if (ret[i] > 0)
498  pkt->size += ret[i];
499  }
500  }
501 
502  if (ret[0] <= 0 || ret[1] < 0 || ret[2] < 0) {
503  av_packet_unref(pkt);
504  if (ret[0] < 0) {
505  res = ret[0];
506  } else if (ret[1] < 0) {
507  res = ret[1];
508  } else if (ret[2] < 0) {
509  res = ret[2];
510  } else {
511  res = AVERROR_EOF;
512  }
513  goto fail;
514  } else {
515  s->img_count++;
516  s->img_number++;
517  s->pts++;
518  return 0;
519  }
520 
521 fail:
522  if (!s->is_pipe) {
523  for (i = 0; i < 3; i++) {
524  if (f[i] != s1->pb)
525  ff_format_io_close(s1, &f[i]);
526  }
527  }
528  return res;
529 }
530 
531 static int img_read_close(struct AVFormatContext* s1)
532 {
533 #if HAVE_GLOB
534  VideoDemuxData *s = s1->priv_data;
535  if (s->use_glob) {
536  globfree(&s->globstate);
537  }
538 #endif
539  return 0;
540 }
541 
542 static int img_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
543 {
545  AVStream *st = s->streams[0];
546 
547  if (s1->ts_from_file) {
548  int index = av_index_search_timestamp(st, timestamp, flags);
549  if(index < 0)
550  return -1;
551  s1->img_number = st->index_entries[index].pos;
552  return 0;
553  }
554 
555  if (timestamp < 0 || !s1->loop && timestamp > s1->img_last - s1->img_first)
556  return -1;
557  s1->img_number = timestamp%(s1->img_last - s1->img_first + 1) + s1->img_first;
558  s1->pts = timestamp;
559  return 0;
560 }
561 
562 #define OFFSET(x) offsetof(VideoDemuxData, x)
563 #define DEC AV_OPT_FLAG_DECODING_PARAM
565  { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, DEC },
566  { "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, DEC },
567 
568  { "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_DEFAULT}, 0, INT_MAX, DEC, "pattern_type"},
569  { "glob_sequence","select glob/sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
570  { "glob", "select glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB }, INT_MIN, INT_MAX, DEC, "pattern_type" },
571  { "sequence", "select sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_SEQUENCE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
572  { "none", "disable pattern matching", 0, AV_OPT_TYPE_CONST, {.i64=PT_NONE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
573 
574  { "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
575  { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, DEC },
576  { "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 },
577  { "video_size", "set video size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, DEC },
578  { "frame_size", "force frame size in bytes", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
579  { "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" },
580  { "none", "none", 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, 0, 2, DEC, "ts_type" },
581  { "sec", "second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, 0, 2, DEC, "ts_type" },
582  { "ns", "nano second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 2 }, 0, 2, DEC, "ts_type" },
583  { NULL },
584 };
585 
586 #if CONFIG_IMAGE2_DEMUXER
587 static const AVClass img2_class = {
588  .class_name = "image2 demuxer",
589  .item_name = av_default_item_name,
590  .option = ff_img_options,
591  .version = LIBAVUTIL_VERSION_INT,
592 };
593 AVInputFormat ff_image2_demuxer = {
594  .name = "image2",
595  .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
596  .priv_data_size = sizeof(VideoDemuxData),
602  .flags = AVFMT_NOFILE,
603  .priv_class = &img2_class,
604 };
605 #endif
606 #if CONFIG_IMAGE2PIPE_DEMUXER
607 static const AVClass img2pipe_class = {
608  .class_name = "image2pipe demuxer",
609  .item_name = av_default_item_name,
610  .option = ff_img_options,
611  .version = LIBAVUTIL_VERSION_INT,
612 };
613 AVInputFormat ff_image2pipe_demuxer = {
614  .name = "image2pipe",
615  .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
616  .priv_data_size = sizeof(VideoDemuxData),
619  .priv_class = &img2pipe_class,
620 };
621 #endif
622 
623 static int bmp_probe(AVProbeData *p)
624 {
625  const uint8_t *b = p->buf;
626  int ihsize;
627 
628  if (AV_RB16(b) != 0x424d)
629  return 0;
630 
631  ihsize = AV_RL32(b+14);
632  if (ihsize < 12 || ihsize > 255)
633  return 0;
634 
635  if (!AV_RN32(b + 6)) {
636  return AVPROBE_SCORE_EXTENSION + 1;
637  }
638  return AVPROBE_SCORE_EXTENSION / 4;
639 }
640 
641 static int dds_probe(AVProbeData *p)
642 {
643  const uint8_t *b = p->buf;
644 
645  if ( AV_RB64(b) == 0x444453207c000000
646  && AV_RL32(b + 8)
647  && AV_RL32(b + 12))
648  return AVPROBE_SCORE_MAX - 1;
649  return 0;
650 }
651 
652 static int dpx_probe(AVProbeData *p)
653 {
654  const uint8_t *b = p->buf;
655  int w, h;
656  int is_big = (AV_RN32(b) == AV_RN32("SDPX"));
657 
658  if (p->buf_size < 0x304+8)
659  return 0;
660  w = is_big ? AV_RB32(p->buf + 0x304) : AV_RL32(p->buf + 0x304);
661  h = is_big ? AV_RB32(p->buf + 0x308) : AV_RL32(p->buf + 0x308);
662  if (w <= 0 || h <= 0)
663  return 0;
664 
665  if (is_big || AV_RN32(b) == AV_RN32("XPDS"))
666  return AVPROBE_SCORE_EXTENSION + 1;
667  return 0;
668 }
669 
670 static int exr_probe(AVProbeData *p)
671 {
672  const uint8_t *b = p->buf;
673 
674  if (AV_RL32(b) == 20000630)
675  return AVPROBE_SCORE_EXTENSION + 1;
676  return 0;
677 }
678 
679 static int j2k_probe(AVProbeData *p)
680 {
681  const uint8_t *b = p->buf;
682 
683  if (AV_RB64(b) == 0x0000000c6a502020 ||
684  AV_RB32(b) == 0xff4fff51)
685  return AVPROBE_SCORE_EXTENSION + 1;
686  return 0;
687 }
688 
689 static int jpeg_probe(AVProbeData *p)
690 {
691  const uint8_t *b = p->buf;
692  int i, state = SOI;
693 
694  if (AV_RB16(b) != 0xFFD8 ||
695  AV_RB32(b) == 0xFFD8FFF7)
696  return 0;
697 
698  b += 2;
699  for (i = 0; i < p->buf_size - 3; i++) {
700  int c;
701  if (b[i] != 0xFF)
702  continue;
703  c = b[i + 1];
704  switch (c) {
705  case SOI:
706  return 0;
707  case SOF0:
708  case SOF1:
709  case SOF2:
710  case SOF3:
711  case SOF5:
712  case SOF6:
713  case SOF7:
714  i += AV_RB16(&b[i + 2]) + 1;
715  if (state != SOI)
716  return 0;
717  state = SOF0;
718  break;
719  case SOS:
720  i += AV_RB16(&b[i + 2]) + 1;
721  if (state != SOF0 && state != SOS)
722  return 0;
723  state = SOS;
724  break;
725  case EOI:
726  if (state != SOS)
727  return 0;
728  state = EOI;
729  break;
730  case DQT:
731  case APP0:
732  case APP1:
733  case APP2:
734  case APP3:
735  case APP4:
736  case APP5:
737  case APP6:
738  case APP7:
739  case APP8:
740  case APP9:
741  case APP10:
742  case APP11:
743  case APP12:
744  case APP13:
745  case APP14:
746  case APP15:
747  case COM:
748  i += AV_RB16(&b[i + 2]) + 1;
749  break;
750  default:
751  if ( (c > TEM && c < SOF0)
752  || c == JPG)
753  return 0;
754  }
755  }
756 
757  if (state == EOI)
758  return AVPROBE_SCORE_EXTENSION + 1;
759  if (state == SOS)
760  return AVPROBE_SCORE_EXTENSION / 2;
761  return AVPROBE_SCORE_EXTENSION / 8;
762 }
763 
764 static int jpegls_probe(AVProbeData *p)
765 {
766  const uint8_t *b = p->buf;
767 
768  if (AV_RB32(b) == 0xffd8fff7)
769  return AVPROBE_SCORE_EXTENSION + 1;
770  return 0;
771 }
772 
773 static int pcx_probe(AVProbeData *p)
774 {
775  const uint8_t *b = p->buf;
776 
777  if ( p->buf_size < 128
778  || b[0] != 10
779  || b[1] > 5
780  || b[2] > 1
781  || av_popcount(b[3]) != 1 || b[3] > 8
782  || AV_RL16(&b[4]) > AV_RL16(&b[8])
783  || AV_RL16(&b[6]) > AV_RL16(&b[10])
784  || b[64])
785  return 0;
786  b += 73;
787  while (++b < p->buf + 128)
788  if (*b)
789  return AVPROBE_SCORE_EXTENSION / 4;
790 
791  return AVPROBE_SCORE_EXTENSION + 1;
792 }
793 
794 static int qdraw_probe(AVProbeData *p)
795 {
796  const uint8_t *b = p->buf;
797 
798  if ( p->buf_size >= 528
799  && (AV_RB64(b + 520) & 0xFFFFFFFFFFFF) == 0x001102ff0c00
800  && AV_RB16(b + 520)
801  && AV_RB16(b + 518))
802  return AVPROBE_SCORE_MAX * 3 / 4;
803  if ( (AV_RB64(b + 8) & 0xFFFFFFFFFFFF) == 0x001102ff0c00
804  && AV_RB16(b + 8)
805  && AV_RB16(b + 6))
806  return AVPROBE_SCORE_EXTENSION / 4;
807  return 0;
808 }
809 
810 static int pictor_probe(AVProbeData *p)
811 {
812  const uint8_t *b = p->buf;
813 
814  if (AV_RL16(b) == 0x1234)
815  return AVPROBE_SCORE_EXTENSION / 4;
816  return 0;
817 }
818 
819 static int png_probe(AVProbeData *p)
820 {
821  const uint8_t *b = p->buf;
822 
823  if (AV_RB64(b) == 0x89504e470d0a1a0a)
824  return AVPROBE_SCORE_MAX - 1;
825  return 0;
826 }
827 
828 static int psd_probe(AVProbeData *p)
829 {
830  const uint8_t *b = p->buf;
831  int ret = 0;
832  uint16_t color_mode;
833 
834  if (AV_RL32(b) == MKTAG('8','B','P','S')) {
835  ret += 1;
836  } else {
837  return 0;
838  }
839 
840  if ((b[4] == 0) && (b[5] == 1)) {/* version 1 is PSD, version 2 is PSB */
841  ret += 1;
842  } else {
843  return 0;
844  }
845 
846  if ((AV_RL32(b+6) == 0) && (AV_RL16(b+10) == 0))/* reserved must be 0 */
847  ret += 1;
848 
849  color_mode = AV_RB16(b+24);
850  if ((color_mode <= 9) && (color_mode != 5) && (color_mode != 6))
851  ret += 1;
852 
853  return AVPROBE_SCORE_EXTENSION + ret;
854 }
855 
856 static int sgi_probe(AVProbeData *p)
857 {
858  const uint8_t *b = p->buf;
859 
860  if (AV_RB16(b) == 474 &&
861  (b[2] & ~1) == 0 &&
862  (b[3] & ~3) == 0 && b[3] &&
863  (AV_RB16(b + 4) & ~7) == 0 && AV_RB16(b + 4))
864  return AVPROBE_SCORE_EXTENSION + 1;
865  return 0;
866 }
867 
869 {
870  const uint8_t *b = p->buf;
871 
872  if (AV_RB32(b) == 0x59a66a95)
873  return AVPROBE_SCORE_EXTENSION + 1;
874  return 0;
875 }
876 
877 static int svg_probe(AVProbeData *p)
878 {
879  const uint8_t *b = p->buf;
880  const uint8_t *end = p->buf + p->buf_size;
881  if (memcmp(p->buf, "<?xml", 5))
882  return 0;
883  while (b < end) {
884  b += ff_subtitles_next_line(b);
885  if (b >= end - 4)
886  return 0;
887  if (!memcmp(b, "<svg", 4))
888  return AVPROBE_SCORE_EXTENSION + 1;
889  }
890  return 0;
891 }
892 
893 static int tiff_probe(AVProbeData *p)
894 {
895  const uint8_t *b = p->buf;
896 
897  if (AV_RB32(b) == 0x49492a00 ||
898  AV_RB32(b) == 0x4D4D002a)
899  return AVPROBE_SCORE_EXTENSION + 1;
900  return 0;
901 }
902 
903 static int webp_probe(AVProbeData *p)
904 {
905  const uint8_t *b = p->buf;
906 
907  if (AV_RB32(b) == 0x52494646 &&
908  AV_RB32(b + 8) == 0x57454250)
909  return AVPROBE_SCORE_MAX - 1;
910  return 0;
911 }
912 
913 static int pnm_magic_check(const AVProbeData *p, int magic)
914 {
915  const uint8_t *b = p->buf;
916 
917  return b[0] == 'P' && b[1] == magic + '0';
918 }
919 
920 static inline int pnm_probe(const AVProbeData *p)
921 {
922  const uint8_t *b = p->buf;
923 
924  while (b[2] == '\r')
925  b++;
926  if (b[2] == '\n' && (b[3] == '#' || (b[3] >= '0' && b[3] <= '9')))
927  return AVPROBE_SCORE_EXTENSION + 2;
928  return 0;
929 }
930 
931 static int pbm_probe(AVProbeData *p)
932 {
933  return pnm_magic_check(p, 1) || pnm_magic_check(p, 4) ? pnm_probe(p) : 0;
934 }
935 
936 static inline int pgmx_probe(AVProbeData *p)
937 {
938  return pnm_magic_check(p, 2) || pnm_magic_check(p, 5) ? pnm_probe(p) : 0;
939 }
940 
941 static int pgm_probe(AVProbeData *p)
942 {
943  int ret = pgmx_probe(p);
944  return ret && !av_match_ext(p->filename, "pgmyuv") ? ret : 0;
945 }
946 
947 static int pgmyuv_probe(AVProbeData *p) // custom FFmpeg format recognized by file extension
948 {
949  int ret = pgmx_probe(p);
950  return ret && av_match_ext(p->filename, "pgmyuv") ? ret : 0;
951 }
952 
953 static int ppm_probe(AVProbeData *p)
954 {
955  return pnm_magic_check(p, 3) || pnm_magic_check(p, 6) ? pnm_probe(p) : 0;
956 }
957 
958 static int pam_probe(AVProbeData *p)
959 {
960  return pnm_magic_check(p, 7) ? pnm_probe(p) : 0;
961 }
962 
963 static int xpm_probe(AVProbeData *p)
964 {
965  const uint8_t *b = p->buf;
966 
967  if (AV_RB64(b) == 0x2f2a2058504d202a && *(b+8) == '/')
968  return AVPROBE_SCORE_MAX - 1;
969  return 0;
970 }
971 
972 #define IMAGEAUTO_DEMUXER(imgname, codecid)\
973 static const AVClass imgname ## _class = {\
974  .class_name = AV_STRINGIFY(imgname) " demuxer",\
975  .item_name = av_default_item_name,\
976  .option = ff_img_options,\
977  .version = LIBAVUTIL_VERSION_INT,\
978 };\
979 AVInputFormat ff_image_ ## imgname ## _pipe_demuxer = {\
980  .name = AV_STRINGIFY(imgname) "_pipe",\
981  .long_name = NULL_IF_CONFIG_SMALL("piped " AV_STRINGIFY(imgname) " sequence"),\
982  .priv_data_size = sizeof(VideoDemuxData),\
983  .read_probe = imgname ## _probe,\
984  .read_header = ff_img_read_header,\
985  .read_packet = ff_img_read_packet,\
986  .priv_class = & imgname ## _class,\
987  .flags = AVFMT_GENERIC_INDEX, \
988  .raw_codec_id = codecid,\
989 };
990 
Definition: mjpeg.h:93
int img_number
Definition: img2.h:45
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:768
Bytestream IO Context.
Definition: avio.h:161
static enum AVPixelFormat pix_fmt
int height
Set by a private option.
Definition: img2.h:52
static int img_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Definition: img2dec.c:542
int64_t avio_size(AVIOContext *s)
Get the filesize.
Definition: aviobuf.c:334
Definition: mjpeg.h:81
static int pcx_probe(AVProbeData *p)
Definition: img2dec.c:773
static int bmp_probe(AVProbeData *p)
Definition: img2dec.c:623
AVOption.
Definition: opt.h:246
void * av_realloc(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory.
Definition: mem.c:135
int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, int size, int distance, int flags)
Add an index entry into a sorted list.
Definition: utils.c:1982
#define OFFSET(x)
Definition: img2dec.c:562
Definition: mjpeg.h:71
Definition: mjpeg.h:111
Definition: mjpeg.h:73
static int qdraw_probe(AVProbeData *p)
Definition: img2dec.c:794
const char * fmt
Definition: avisynth_c.h:769
Definition: mjpeg.h:40
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
Definition: mjpeg.h:42
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
const char * filename
Definition: avformat.h:449
int64_t pos
byte position in stream, -1 if unknown
Definition: avcodec.h:1420
int ffio_rewind_with_probe_data(AVIOContext *s, unsigned char **buf, int buf_size)
Rewind the AVIOContext using the specified buffer containing the first buf_size bytes of the file...
Definition: aviobuf.c:1055
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4748
static int psd_probe(AVProbeData *p)
Definition: img2dec.c:828
int64_t pos
Definition: avformat.h:803
char path[1024]
Definition: img2.h:50
static int pgm_probe(AVProbeData *p)
Definition: img2dec.c:941
static int j2k_probe(AVProbeData *p)
Definition: img2dec.c:679
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
static int img_read_close(struct AVFormatContext *s1)
Definition: img2dec.c:531
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3812
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1401
const char * b
Definition: vf_curves.c:113
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:244
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:193
#define AVIO_FLAG_READ
read-only
Definition: avio.h:654
#define AVPROBE_PADDING_SIZE
extra allocated bytes at the end of the probe buffer
Definition: avformat.h:462
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
Definition: avformat.h:1096
int start_number_range
Definition: img2.h:61
Definition: img2.h:37
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:329
AVInputFormat * av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
Guess the file format.
Definition: format.c:173
static AVPacket pkt
int ctx_flags
Flags signalling stream properties.
Definition: avformat.h:1374
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
Definition: bytestream.h:87
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
Definition: bytestream.h:87
MJPEG encoder and decoder.
static int png_probe(AVProbeData *p)
Definition: img2dec.c:819
This struct describes the properties of an encoded stream.
Definition: avcodec.h:3804
int img_count
Definition: img2.h:47
char * pixel_format
Set by a private option.
Definition: img2.h:51
#define IMAGEAUTO_DEMUXER(imgname, codecid)
Definition: img2dec.c:972
Format I/O context.
Definition: avformat.h:1325
int avio_check(const char *url, int flags)
Return AVIO_FLAG_* access flags corresponding to the access permissions of the resource in url...
Definition: avio.c:480
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
Definition: mjpeg.h:72
uint8_t
static int dds_probe(AVProbeData *p)
Definition: img2dec.c:641
int width
Video only.
Definition: avcodec.h:3878
#define AVFMTCTX_NOHEADER
signal that no header is present (streams are added dynamically)
Definition: avformat.h:1278
AVOptions.
int pattern_type
PatternType.
Definition: img2.h:55
int flags
Can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_SHOW_IDS, AVFMT_GENERIC_INDEX, AVFMT_TS_DISCONT, AVFMT_NOBINSEARCH, AVFMT_NOGENSEARCH, AVFMT_NO_BYTE_SEEK, AVFMT_SEEK_TO_PTS.
Definition: avformat.h:661
static int pictor_probe(AVProbeData *p)
Definition: img2dec.c:810
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
enum AVStreamParseType need_parsing
Definition: avformat.h:1085
void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
Definition: utils.c:5455
Definition: mjpeg.h:46
Definition: mjpeg.h:113
int ff_img_read_header(AVFormatContext *s1)
Definition: img2dec.c:180
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4378
static struct @281 state
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:87
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1393
Definition: mjpeg.h:86
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1436
uint8_t * data
Definition: avcodec.h:1400
int(* read_header)(struct AVFormatContext *)
Read the format header and initialize the AVFormatContext structure.
Definition: avformat.h:712
static int img_read_probe(AVProbeData *p)
Definition: img2dec.c:161
static int flags
Definition: log.c:57
#define AVERROR_EOF
End of file.
Definition: error.h:55
static int webp_probe(AVProbeData *p)
Definition: img2dec.c:903
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
int av_match_ext(const char *filename, const char *extensions)
Return a positive value if the given filename has one of the given extensions, 0 otherwise.
Definition: format.c:85
const AVOption ff_img_options[]
Definition: img2dec.c:564
ptrdiff_t size
Definition: opengl_enc.c:101
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
static const uint8_t header[24]
Definition: sdr2.c:67
Definition: mjpeg.h:87
enum AVCodecID video_codec_id
Forced video codec_id.
Definition: avformat.h:1489
#define av_log(a,...)
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:646
static int exr_probe(AVProbeData *p)
Definition: img2dec.c:670
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1432
static int is_glob(const char *path)
Definition: img2dec.c:78
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:86
#define AVINDEX_KEYFRAME
Definition: avformat.h:810
int64_t pts
Definition: img2.h:46
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags)
Get the index for a specific timestamp.
Definition: utils.c:2091
int(* read_probe)(AVProbeData *)
Tell if a given file has a chance of being parsed as this format.
Definition: avformat.h:705
Definition: mjpeg.h:89
static const int sizes[][2]
Definition: img2dec.c:51
int loop
Definition: img2.h:54
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
static int xpm_probe(AVProbeData *p)
Definition: img2dec.c:963
static int pgmyuv_probe(AVProbeData *p)
Definition: img2dec.c:947
int ts_from_file
Definition: img2.h:63
static int svg_probe(AVProbeData *p)
Definition: img2dec.c:877
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3808
uint16_t width
Definition: gdv.c:47
size_t av_strlcpy(char *dst, const char *src, size_t size)
Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.
Definition: avstring.c:83
#define fail()
Definition: checkasm.h:112
Definition: mjpeg.h:39
Definition: mjpeg.h:70
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1406
int buf_size
Size of buf except extra allocated bytes.
Definition: avformat.h:451
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:450
Definition: mjpeg.h:79
Definition: mjpeg.h:80
static int find_image_range(AVIOContext *pb, int *pfirst_index, int *plast_index, const char *path, int start_index, int start_index_range)
Get index range of image files matched by path.
Definition: img2dec.c:108
char filename[1024]
input or output filename
Definition: avformat.h:1401
static int jpeg_probe(AVProbeData *p)
Definition: img2dec.c:689
enum AVCodecID audio_codec_id
Forced audio codec_id.
Definition: avformat.h:1495
Definition: mjpeg.h:44
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
Definition: avstring.c:213
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:55
int is_pipe
Definition: img2.h:48
Definition: mjpeg.h:91
Definition: mjpeg.h:41
int width
Definition: img2.h:52
Definition: img2.h:35
static int sgi_probe(AVProbeData *p)
Definition: img2dec.c:856
#define AVFMT_FLAG_CUSTOM_IO
The caller has supplied a custom AVIOContext, don't avio_close() it.
Definition: avformat.h:1444
Definition: mjpeg.h:83
int start_number
Definition: img2.h:60
#define FF_ARRAY_ELEMS(a)
int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
Definition: utils.c:4623
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:528
#define PROBE_BUF_MIN
size of probe buffer, for guessing file type from file contents
Definition: internal.h:33
Stream structure.
Definition: avformat.h:872
#define DEC
Definition: img2dec.c:563
int frame_size
Definition: img2.h:62
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
Definition: mjpeg.h:88
int frame_size
Definition: mxfenc.c:1947
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:251
AVIOContext * pb
I/O context.
Definition: avformat.h:1367
static int loop
Definition: ffplay.c:336
int split_planes
use independent file for each Y, U, V plane
Definition: img2.h:49
static int pbm_probe(AVProbeData *p)
Definition: img2dec.c:931
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:590
int av_filename_number_test(const char *filename)
Check whether filename actually is a numbered sequence generator.
Definition: utils.c:310
int(* read_packet)(struct AVFormatContext *, AVPacket *pkt)
Read one packet and put it in 'pkt'.
Definition: avformat.h:723
void * buf
Definition: avisynth_c.h:690
Definition: mjpeg.h:84
Describe the class of an AVClass context structure.
Definition: log.h:67
int index
Definition: gxfenc.c:89
static int infer_size(int *width_ptr, int *height_ptr, int size)
Definition: img2dec.c:63
offset must point to AVRational
Definition: opt.h:236
Definition: mjpeg.h:45
#define s1
Definition: regdef.h:38
#define AVPROBE_SCORE_EXTENSION
score for file extension
Definition: avformat.h:458
offset must point to two consecutive integers
Definition: opt.h:233
This structure contains the data a format has to probe a file.
Definition: avformat.h:448
#define AV_RN32(p)
Definition: intreadwrite.h:364
misc parsing utilities
static int pnm_probe(const AVProbeData *p)
Definition: img2dec.c:920
static int ppm_probe(AVProbeData *p)
Definition: img2dec.c:953
int img_last
Definition: img2.h:44
static int sunrast_probe(AVProbeData *p)
Definition: img2dec.c:868
int raw_codec_id
Raw demuxers store their codec ID here.
Definition: avformat.h:693
Definition: mjpeg.h:47
static av_always_inline int ff_subtitles_next_line(const char *ptr)
Get the number of characters to increment to jump to the next line, or to the end of the string...
Definition: subtitles.h:187
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:921
static int dpx_probe(AVProbeData *p)
Definition: img2dec.c:652
Definition: mjpeg.h:94
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:460
static int tiff_probe(AVProbeData *p)
Definition: img2dec.c:893
full parsing and repack
Definition: avformat.h:793
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_RB64
Definition: bytestream.h:87
Main libavformat public API header.
if(ret< 0)
Definition: vf_mcdeint.c:279
#define AVFMT_NOFILE
Demuxer will use avio_open, no opened file should be provided by the caller.
Definition: avformat.h:465
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base...
Definition: avformat.h:911
Definition: mjpeg.h:90
static double c[64]
int den
Denominator.
Definition: rational.h:60
Definition: mjpeg.h:92
struct AVInputFormat * iformat
The input container format.
Definition: avformat.h:1337
enum AVCodecID ff_guess_image2_codec(const char *filename)
Definition: img2.c:102
#define av_free(p)
Definition: mjpeg.h:85
AVRational framerate
Set by a private option.
Definition: img2.h:53
struct AVCodecParserContext * parser
Definition: avformat.h:1086
void * priv_data
Format private data.
Definition: avformat.h:1353
static int pam_probe(AVProbeData *p)
Definition: img2dec.c:958
static int jpegls_probe(AVProbeData *p)
Definition: img2dec.c:764
int use_glob
Definition: img2.h:56
static int pgmx_probe(AVProbeData *p)
Definition: img2dec.c:936
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:647
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1014
Definition: mjpeg.h:82
int avio_feof(AVIOContext *s)
feof() equivalent for AVIOContext.
Definition: aviobuf.c:356
enum AVPixelFormat av_get_pix_fmt(const char *name)
Return the pixel format corresponding to name.
Definition: pixdesc.c:2291
static int pnm_magic_check(const AVProbeData *p, int magic)
Definition: img2dec.c:913
int stream_index
Definition: avcodec.h:1402
int img_first
Definition: img2.h:43
#define MKTAG(a, b, c, d)
Definition: common.h:366
int(* io_open)(struct AVFormatContext *s, AVIOContext **pb, const char *url, int flags, AVDictionary **options)
Definition: avformat.h:1885
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1377
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1393
int ff_img_read_packet(AVFormatContext *s1, AVPacket *pkt)
Definition: img2dec.c:373
AVInputFormat * av_iformat_next(const AVInputFormat *f)
If f is NULL, returns the first registered input format, if f is non-NULL, returns the next registere...
Definition: format.c:45