3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 * Copyright (c) 2004 Michael Niedermayer
6 * This file is part of FFmpeg.
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.
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.
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
23 #define _DEFAULT_SOURCE
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"
34 #include "avio_internal.h"
37 #include "libavcodec/mjpeg.h"
38 #include "libavcodec/xwd.h"
39 #include "subtitles.h"
42 /* Locally define as 0 (bitwise-OR no-op) any missing glob options that
43 are non-posix glibc/bsd extensions. */
45 #define GLOB_NOMAGIC 0
51 #endif /* HAVE_GLOB */
53 static const int sizes[][2] = {
65 static int infer_size(int *width_ptr, int *height_ptr, int size)
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];
80 static int is_glob(const char *path)
86 while (p = strchr(p, '%')) {
91 if (span = strspn(p, "*?[]{}"))
94 /* Did we hit a glob char or get to the end? */
102 * Get index range of image files matched by path.
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
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)
114 int range, last_index, range1, first_index;
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) {
121 if (pb || avio_check(buf, AVIO_FLAG_READ) > 0)
125 if (avio_check(buf, AVIO_FLAG_READ) > 0)
128 if (first_index == start_index + start_index_range)
131 /* find the last image */
132 last_index = first_index;
140 if (av_get_frame_filename(buf, sizeof(buf), path,
141 last_index + range1) < 0)
143 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
146 /* just in case... */
147 if (range >= (1 << 30))
150 /* we are sure than image last_index + range exists */
155 *pfirst_index = first_index;
156 *plast_index = last_index;
163 static int img_read_probe(const AVProbeData *p)
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)
174 else if (av_match_ext(p->filename, "raw") || av_match_ext(p->filename, "gif"))
177 return AVPROBE_SCORE_EXTENSION;
182 int ff_img_read_header(AVFormatContext *s1)
184 VideoDemuxData *s = s1->priv_data;
185 int first_index = 1, last_index = 1;
187 enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE;
189 s1->ctx_flags |= AVFMTCTX_NOHEADER;
191 st = avformat_new_stream(s1, NULL);
193 return AVERROR(ENOMEM);
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",
200 return AVERROR(EINVAL);
203 av_strlcpy(s->path, s1->url, sizeof(s->path));
208 if (s1->iformat->flags & AVFMT_NOFILE)
212 st->need_parsing = AVSTREAM_PARSE_FULL;
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);
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);
224 avpriv_set_pts_info(st, 64, s->framerate.den, s->framerate.num);
226 if (s->width && s->height) {
227 st->codecpar->width = s->width;
228 st->codecpar->height = s->height;
232 if (s->pattern_type == PT_DEFAULT) {
234 s->pattern_type = PT_NONE;
236 s->pattern_type = PT_GLOB_SEQUENCE;
239 if (s->pattern_type == PT_GLOB_SEQUENCE) {
240 s->use_glob = is_glob(s->path);
243 char *p = s->path, *q, *dup;
247 av_log(s1, AV_LOG_WARNING, "Pattern type 'glob_sequence' is deprecated: "
248 "use pattern_type 'glob' instead\n");
250 dup = q = av_strdup(p);
252 /* Do we have room for the next char and a \ insertion? */
253 if ((p - s->path) >= (sizeof(s->path) - 2))
255 if (*q == '%' && strspn(q + 1, "%*?[]{}"))
257 else if (strspn(q, "\\*?[]{}"))
264 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
266 return AVERROR(ENOENT);
269 last_index = s->globstate.gl_pathc - 1;
273 if ((s->pattern_type == PT_GLOB_SEQUENCE && !s->use_glob) || s->pattern_type == PT_SEQUENCE) {
274 if (find_image_range(s1->pb, &first_index, &last_index, s->path,
275 s->start_number, s->start_number_range) < 0) {
276 av_log(s1, AV_LOG_ERROR,
277 "Could find no file with path '%s' and index in the range %d-%d\n",
278 s->path, s->start_number, s->start_number + s->start_number_range - 1);
279 return AVERROR(ENOENT);
281 } else if (s->pattern_type == PT_GLOB) {
284 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
286 return AVERROR(ENOENT);
289 last_index = s->globstate.gl_pathc - 1;
292 av_log(s1, AV_LOG_ERROR,
293 "Pattern type 'glob' was selected but globbing "
294 "is not supported by this libavformat build\n");
295 return AVERROR(ENOSYS);
297 } else if (s->pattern_type != PT_GLOB_SEQUENCE && s->pattern_type != PT_NONE) {
298 av_log(s1, AV_LOG_ERROR,
299 "Unknown value '%d' for pattern_type option\n", s->pattern_type);
300 return AVERROR(EINVAL);
302 s->img_first = first_index;
303 s->img_last = last_index;
304 s->img_number = first_index;
305 /* compute duration */
306 if (!s->ts_from_file) {
308 st->duration = last_index - first_index + 1;
312 if (s1->video_codec_id) {
313 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
314 st->codecpar->codec_id = s1->video_codec_id;
315 } else if (s1->audio_codec_id) {
316 st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
317 st->codecpar->codec_id = s1->audio_codec_id;
318 } else if (s1->iformat->raw_codec_id) {
319 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
320 st->codecpar->codec_id = s1->iformat->raw_codec_id;
322 const char *str = strrchr(s->path, '.');
323 s->split_planes = str && !av_strcasecmp(str + 1, "y");
324 st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
326 int probe_buffer_size = 2048;
327 uint8_t *probe_buffer = av_realloc(NULL, probe_buffer_size + AVPROBE_PADDING_SIZE);
328 const AVInputFormat *fmt = NULL;
329 void *fmt_iter = NULL;
330 AVProbeData pd = { 0 };
333 return AVERROR(ENOMEM);
335 probe_buffer_size = avio_read(s1->pb, probe_buffer, probe_buffer_size);
336 if (probe_buffer_size < 0) {
337 av_free(probe_buffer);
338 return probe_buffer_size;
340 memset(probe_buffer + probe_buffer_size, 0, AVPROBE_PADDING_SIZE);
342 pd.buf = probe_buffer;
343 pd.buf_size = probe_buffer_size;
344 pd.filename = s1->url;
346 while ((fmt = av_demuxer_iterate(&fmt_iter))) {
347 if (fmt->read_header != ff_img_read_header ||
349 (fmt->flags & AVFMT_NOFILE) ||
352 if (fmt->read_probe(&pd) > 0) {
353 st->codecpar->codec_id = fmt->raw_codec_id;
357 if (s1->flags & AVFMT_FLAG_CUSTOM_IO) {
358 avio_seek(s1->pb, 0, SEEK_SET);
359 av_freep(&probe_buffer);
361 ffio_rewind_with_probe_data(s1->pb, &probe_buffer, probe_buffer_size);
363 if (st->codecpar->codec_id == AV_CODEC_ID_NONE)
364 st->codecpar->codec_id = ff_guess_image2_codec(s->path);
365 if (st->codecpar->codec_id == AV_CODEC_ID_LJPEG)
366 st->codecpar->codec_id = AV_CODEC_ID_MJPEG;
367 if (st->codecpar->codec_id == AV_CODEC_ID_ALIAS_PIX) // we cannot distingiush this from BRENDER_PIX
368 st->codecpar->codec_id = AV_CODEC_ID_NONE;
370 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
371 pix_fmt != AV_PIX_FMT_NONE)
372 st->codecpar->format = pix_fmt;
378 * Add this frame's source path and basename to packet's sidedata
379 * as a dictionary, so it can be used by filters like 'drawtext'.
381 static int add_filename_as_pkt_side_data(char *filename, AVPacket *pkt) {
382 int metadata_len, ret;
383 AVDictionary *d = NULL;
384 char *packed_metadata = NULL;
386 av_dict_set(&d, "lavf.image2dec.source_path", filename, 0);
387 av_dict_set(&d, "lavf.image2dec.source_basename", av_basename(filename), 0);
389 packed_metadata = av_packet_pack_dictionary(d, &metadata_len);
391 if (!packed_metadata)
392 return AVERROR(ENOMEM);
393 ret = av_packet_add_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA,
394 packed_metadata, metadata_len);
396 av_freep(&packed_metadata);
402 int ff_img_read_packet(AVFormatContext *s1, AVPacket *pkt)
404 VideoDemuxData *s = s1->priv_data;
405 char filename_bytes[1024];
406 char *filename = filename_bytes;
408 int size[3] = { 0 }, ret[3] = { 0 };
409 AVIOContext *f[3] = { NULL };
410 AVCodecParameters *par = s1->streams[0]->codecpar;
413 /* loop over input */
414 if (s->loop && s->img_number > s->img_last) {
415 s->img_number = s->img_first;
417 if (s->img_number > s->img_last)
419 if (s->pattern_type == PT_NONE) {
420 av_strlcpy(filename_bytes, s->path, sizeof(filename_bytes));
421 } else if (s->use_glob) {
423 filename = s->globstate.gl_pathv[s->img_number];
426 if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
428 s->img_number) < 0 && s->img_number > 1)
431 for (i = 0; i < 3; i++) {
433 !strcmp(filename_bytes, s->path) &&
437 } else if (s1->io_open(s1, &f[i], filename, AVIO_FLAG_READ, NULL) < 0) {
440 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",
444 size[i] = avio_size(f[i]);
446 if (!s->split_planes)
448 filename[strlen(filename) - 1] = 'U' + i;
451 if (par->codec_id == AV_CODEC_ID_NONE) {
452 AVProbeData pd = { 0 };
453 const AVInputFormat *ifmt;
454 uint8_t header[PROBE_BUF_MIN + AVPROBE_PADDING_SIZE];
458 ret = avio_read(f[0], header, PROBE_BUF_MIN);
461 memset(header + ret, 0, sizeof(header) - ret);
462 avio_skip(f[0], -ret);
465 pd.filename = filename;
467 ifmt = av_probe_input_format3(&pd, 1, &score);
468 if (ifmt && ifmt->read_packet == ff_img_read_packet && ifmt->raw_codec_id)
469 par->codec_id = ifmt->raw_codec_id;
472 if (par->codec_id == AV_CODEC_ID_RAWVIDEO && !par->width)
473 infer_size(&par->width, &par->height, size[0]);
476 if (avio_feof(f[0]) && s->loop && s->is_pipe)
477 avio_seek(f[0], 0, SEEK_SET);
480 if (s->frame_size > 0) {
481 size[0] = s->frame_size;
482 } else if (!s1->streams[0]->parser) {
483 size[0] = avio_size(s1->pb);
489 res = av_new_packet(pkt, size[0] + size[1] + size[2]);
493 pkt->stream_index = 0;
494 pkt->flags |= AV_PKT_FLAG_KEY;
495 if (s->ts_from_file) {
496 struct stat img_stat;
497 if (stat(filename, &img_stat)) {
501 pkt->pts = (int64_t)img_stat.st_mtime;
502 #if HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
503 if (s->ts_from_file == 2)
504 pkt->pts = 1000000000*pkt->pts + img_stat.st_mtim.tv_nsec;
506 av_add_index_entry(s1->streams[0], s->img_number, pkt->pts, 0, 0, AVINDEX_KEYFRAME);
507 } else if (!s->is_pipe) {
512 pkt->pos = avio_tell(f[0]);
515 * export_path_metadata must be explicitly enabled via
516 * command line options for path metadata to be exported
517 * as packet side_data.
519 if (!s->is_pipe && s->export_path_metadata == 1) {
520 res = add_filename_as_pkt_side_data(filename, pkt);
526 for (i = 0; i < 3; i++) {
528 ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
529 if (s->loop && s->is_pipe && ret[i] == AVERROR_EOF) {
530 if (avio_seek(f[i], 0, SEEK_SET) >= 0) {
532 ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
535 if (!s->is_pipe && f[i] != s1->pb)
536 ff_format_io_close(s1, &f[i]);
542 if (ret[0] <= 0 || ret[1] < 0 || ret[2] < 0) {
545 } else if (ret[1] < 0) {
547 } else if (ret[2] < 0) {
562 for (i = 0; i < 3; i++) {
564 ff_format_io_close(s1, &f[i]);
570 static int img_read_close(struct AVFormatContext* s1)
573 VideoDemuxData *s = s1->priv_data;
575 globfree(&s->globstate);
581 static int img_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
583 VideoDemuxData *s1 = s->priv_data;
584 AVStream *st = s->streams[0];
586 if (s1->ts_from_file) {
587 int index = av_index_search_timestamp(st, timestamp, flags);
590 s1->img_number = st->index_entries[index].pos;
594 if (timestamp < 0 || !s1->loop && timestamp > s1->img_last - s1->img_first)
596 s1->img_number = timestamp%(s1->img_last - s1->img_first + 1) + s1->img_first;
601 #define OFFSET(x) offsetof(VideoDemuxData, x)
602 #define DEC AV_OPT_FLAG_DECODING_PARAM
603 #define COMMON_OPTIONS \
604 { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, DEC }, \
605 { "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, \
606 { "video_size", "set video size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, DEC }, \
607 { "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, DEC }, \
610 #if CONFIG_IMAGE2_DEMUXER
611 const AVOption ff_img_options[] = {
612 { "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_DEFAULT}, 0, INT_MAX, DEC, "pattern_type"},
613 { "glob_sequence","select glob/sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
614 { "glob", "select glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB }, INT_MIN, INT_MAX, DEC, "pattern_type" },
615 { "sequence", "select sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_SEQUENCE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
616 { "none", "disable pattern matching", 0, AV_OPT_TYPE_CONST, {.i64=PT_NONE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
617 { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, DEC },
618 { "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 },
619 { "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" },
620 { "none", "none", 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, 0, 2, DEC, "ts_type" },
621 { "sec", "second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, 0, 2, DEC, "ts_type" },
622 { "ns", "nano second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 2 }, 0, 2, DEC, "ts_type" },
623 { "export_path_metadata", "enable metadata containing input path information", OFFSET(export_path_metadata), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, DEC }, \
627 static const AVClass img2_class = {
628 .class_name = "image2 demuxer",
629 .item_name = av_default_item_name,
630 .option = ff_img_options,
631 .version = LIBAVUTIL_VERSION_INT,
633 AVInputFormat ff_image2_demuxer = {
635 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
636 .priv_data_size = sizeof(VideoDemuxData),
637 .read_probe = img_read_probe,
638 .read_header = ff_img_read_header,
639 .read_packet = ff_img_read_packet,
640 .read_close = img_read_close,
641 .read_seek = img_read_seek,
642 .flags = AVFMT_NOFILE,
643 .priv_class = &img2_class,
647 const AVOption ff_img2pipe_options[] = {
648 { "frame_size", "force frame size in bytes", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
652 #if CONFIG_IMAGE2PIPE_DEMUXER
653 static const AVClass img2pipe_class = {
654 .class_name = "image2pipe demuxer",
655 .item_name = av_default_item_name,
656 .option = ff_img2pipe_options,
657 .version = LIBAVUTIL_VERSION_INT,
659 AVInputFormat ff_image2pipe_demuxer = {
660 .name = "image2pipe",
661 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
662 .priv_data_size = sizeof(VideoDemuxData),
663 .read_header = ff_img_read_header,
664 .read_packet = ff_img_read_packet,
665 .priv_class = &img2pipe_class,
669 static int bmp_probe(const AVProbeData *p)
671 const uint8_t *b = p->buf;
674 if (AV_RB16(b) != 0x424d)
677 ihsize = AV_RL32(b+14);
678 if (ihsize < 12 || ihsize > 255)
681 if (!AV_RN32(b + 6)) {
682 return AVPROBE_SCORE_EXTENSION + 1;
684 return AVPROBE_SCORE_EXTENSION / 4;
687 static int dds_probe(const AVProbeData *p)
689 const uint8_t *b = p->buf;
691 if ( AV_RB64(b) == 0x444453207c000000
694 return AVPROBE_SCORE_MAX - 1;
698 static int dpx_probe(const AVProbeData *p)
700 const uint8_t *b = p->buf;
702 int is_big = (AV_RN32(b) == AV_RN32("SDPX"));
704 if (p->buf_size < 0x304+8)
706 w = is_big ? AV_RB32(p->buf + 0x304) : AV_RL32(p->buf + 0x304);
707 h = is_big ? AV_RB32(p->buf + 0x308) : AV_RL32(p->buf + 0x308);
708 if (w <= 0 || h <= 0)
711 if (is_big || AV_RN32(b) == AV_RN32("XPDS"))
712 return AVPROBE_SCORE_EXTENSION + 1;
716 static int exr_probe(const AVProbeData *p)
718 const uint8_t *b = p->buf;
720 if (AV_RL32(b) == 20000630)
721 return AVPROBE_SCORE_EXTENSION + 1;
725 static int j2k_probe(const AVProbeData *p)
727 const uint8_t *b = p->buf;
729 if (AV_RB64(b) == 0x0000000c6a502020 ||
730 AV_RB32(b) == 0xff4fff51)
731 return AVPROBE_SCORE_EXTENSION + 1;
735 static int jpeg_probe(const AVProbeData *p)
737 const uint8_t *b = p->buf;
740 if (AV_RB16(b) != 0xFFD8 ||
741 AV_RB32(b) == 0xFFD8FFF7)
745 for (i = 0; i < p->buf_size - 3; i++) {
760 i += AV_RB16(&b[i + 2]) + 1;
766 i += AV_RB16(&b[i + 2]) + 1;
767 if (state != SOF0 && state != SOS)
794 i += AV_RB16(&b[i + 2]) + 1;
797 if ( (c > TEM && c < SOF0)
804 return AVPROBE_SCORE_EXTENSION + 1;
806 return AVPROBE_SCORE_EXTENSION / 2;
807 return AVPROBE_SCORE_EXTENSION / 8;
810 static int jpegls_probe(const AVProbeData *p)
812 const uint8_t *b = p->buf;
814 if (AV_RB32(b) == 0xffd8fff7)
815 return AVPROBE_SCORE_EXTENSION + 1;
819 static int pcx_probe(const AVProbeData *p)
821 const uint8_t *b = p->buf;
823 if ( p->buf_size < 128
827 || av_popcount(b[3]) != 1 || b[3] > 8
828 || AV_RL16(&b[4]) > AV_RL16(&b[8])
829 || AV_RL16(&b[6]) > AV_RL16(&b[10])
833 while (++b < p->buf + 128)
835 return AVPROBE_SCORE_EXTENSION / 4;
837 return AVPROBE_SCORE_EXTENSION + 1;
840 static int qdraw_probe(const AVProbeData *p)
842 const uint8_t *b = p->buf;
844 if ( p->buf_size >= 528
845 && (AV_RB64(b + 520) & 0xFFFFFFFFFFFF) == 0x001102ff0c00
848 return AVPROBE_SCORE_MAX * 3 / 4;
849 if ( (AV_RB64(b + 8) & 0xFFFFFFFFFFFF) == 0x001102ff0c00
852 return AVPROBE_SCORE_EXTENSION / 4;
856 static int pictor_probe(const AVProbeData *p)
858 const uint8_t *b = p->buf;
860 if (AV_RL16(b) == 0x1234)
861 return AVPROBE_SCORE_EXTENSION / 4;
865 static int png_probe(const AVProbeData *p)
867 const uint8_t *b = p->buf;
869 if (AV_RB64(b) == 0x89504e470d0a1a0a)
870 return AVPROBE_SCORE_MAX - 1;
874 static int psd_probe(const AVProbeData *p)
876 const uint8_t *b = p->buf;
880 if (AV_RL32(b) == MKTAG('8','B','P','S')) {
886 if ((b[4] == 0) && (b[5] == 1)) {/* version 1 is PSD, version 2 is PSB */
892 if ((AV_RL32(b+6) == 0) && (AV_RL16(b+10) == 0))/* reserved must be 0 */
895 color_mode = AV_RB16(b+24);
896 if ((color_mode <= 9) && (color_mode != 5) && (color_mode != 6))
899 return AVPROBE_SCORE_EXTENSION + ret;
902 static int sgi_probe(const AVProbeData *p)
904 const uint8_t *b = p->buf;
906 if (AV_RB16(b) == 474 &&
908 (b[3] & ~3) == 0 && b[3] &&
909 (AV_RB16(b + 4) & ~7) == 0 && AV_RB16(b + 4))
910 return AVPROBE_SCORE_EXTENSION + 1;
914 static int sunrast_probe(const AVProbeData *p)
916 const uint8_t *b = p->buf;
918 if (AV_RB32(b) == 0x59a66a95)
919 return AVPROBE_SCORE_EXTENSION + 1;
923 static int svg_probe(const AVProbeData *p)
925 const uint8_t *b = p->buf;
926 const uint8_t *end = p->buf + p->buf_size;
928 if (memcmp(p->buf, "<?xml", 5))
931 int inc = ff_subtitles_next_line(b);
937 if (!memcmp(b, "<svg", 4))
938 return AVPROBE_SCORE_EXTENSION + 1;
943 static int tiff_probe(const AVProbeData *p)
945 const uint8_t *b = p->buf;
947 if (AV_RB32(b) == 0x49492a00 ||
948 AV_RB32(b) == 0x4D4D002a)
949 return AVPROBE_SCORE_EXTENSION + 1;
953 static int webp_probe(const AVProbeData *p)
955 const uint8_t *b = p->buf;
957 if (AV_RB32(b) == 0x52494646 &&
958 AV_RB32(b + 8) == 0x57454250)
959 return AVPROBE_SCORE_MAX - 1;
963 static int pnm_magic_check(const AVProbeData *p, int magic)
965 const uint8_t *b = p->buf;
967 return b[0] == 'P' && b[1] == magic + '0';
970 static inline int pnm_probe(const AVProbeData *p)
972 const uint8_t *b = p->buf;
976 if (b[2] == '\n' && (b[3] == '#' || (b[3] >= '0' && b[3] <= '9')))
977 return AVPROBE_SCORE_EXTENSION + 2;
981 static int pbm_probe(const AVProbeData *p)
983 return pnm_magic_check(p, 1) || pnm_magic_check(p, 4) ? pnm_probe(p) : 0;
986 static inline int pgmx_probe(const AVProbeData *p)
988 return pnm_magic_check(p, 2) || pnm_magic_check(p, 5) ? pnm_probe(p) : 0;
991 static int pgm_probe(const AVProbeData *p)
993 int ret = pgmx_probe(p);
994 return ret && !av_match_ext(p->filename, "pgmyuv") ? ret : 0;
997 static int pgmyuv_probe(const AVProbeData *p) // custom FFmpeg format recognized by file extension
999 int ret = pgmx_probe(p);
1000 return ret && av_match_ext(p->filename, "pgmyuv") ? ret : 0;
1003 static int ppm_probe(const AVProbeData *p)
1005 return pnm_magic_check(p, 3) || pnm_magic_check(p, 6) ? pnm_probe(p) : 0;
1008 static int pam_probe(const AVProbeData *p)
1010 return pnm_magic_check(p, 7) ? pnm_probe(p) : 0;
1013 static int xpm_probe(const AVProbeData *p)
1015 const uint8_t *b = p->buf;
1017 if (AV_RB64(b) == 0x2f2a2058504d202a && *(b+8) == '/')
1018 return AVPROBE_SCORE_MAX - 1;
1022 static int xwd_probe(const AVProbeData *p)
1024 const uint8_t *b = p->buf;
1025 unsigned width, bpp, bpad, lsize;
1027 if ( p->buf_size < XWD_HEADER_SIZE
1028 || AV_RB32(b ) < XWD_HEADER_SIZE // header size
1029 || AV_RB32(b + 4) != XWD_VERSION // version
1030 || AV_RB32(b + 8) != XWD_Z_PIXMAP // format
1031 || AV_RB32(b + 12) > 32 || !AV_RB32(b + 12) // depth
1032 || AV_RB32(b + 16) == 0 // width
1033 || AV_RB32(b + 20) == 0 // height
1034 || AV_RB32(b + 28) > 1 // byteorder
1035 || AV_RB32(b + 32) & ~56 || av_popcount(AV_RB32(b + 32)) != 1 // bitmap unit
1036 || AV_RB32(b + 36) > 1 // bitorder
1037 || AV_RB32(b + 40) & ~56 || av_popcount(AV_RB32(b + 40)) != 1 // padding
1038 || AV_RB32(b + 44) > 32 || !AV_RB32(b + 44) // bpp
1039 || AV_RB32(b + 68) > 256) // colours
1042 width = AV_RB32(b + 16);
1043 bpad = AV_RB32(b + 40);
1044 bpp = AV_RB32(b + 44);
1045 lsize = AV_RB32(b + 48);
1046 if (lsize < FFALIGN(width * bpp, bpad) >> 3)
1049 return AVPROBE_SCORE_MAX / 2 + 1;
1052 static int gif_probe(const AVProbeData *p)
1055 if (memcmp(p->buf, gif87a_sig, 6) && memcmp(p->buf, gif89a_sig, 6))
1058 /* width or height contains zero? */
1059 if (!AV_RL16(&p->buf[6]) || !AV_RL16(&p->buf[8]))
1062 return AVPROBE_SCORE_MAX - 1;
1065 #define IMAGEAUTO_DEMUXER(imgname, codecid)\
1066 static const AVClass imgname ## _class = {\
1067 .class_name = AV_STRINGIFY(imgname) " demuxer",\
1068 .item_name = av_default_item_name,\
1069 .option = ff_img2pipe_options,\
1070 .version = LIBAVUTIL_VERSION_INT,\
1072 AVInputFormat ff_image_ ## imgname ## _pipe_demuxer = {\
1073 .name = AV_STRINGIFY(imgname) "_pipe",\
1074 .long_name = NULL_IF_CONFIG_SMALL("piped " AV_STRINGIFY(imgname) " sequence"),\
1075 .priv_data_size = sizeof(VideoDemuxData),\
1076 .read_probe = imgname ## _probe,\
1077 .read_header = ff_img_read_header,\
1078 .read_packet = ff_img_read_packet,\
1079 .priv_class = & imgname ## _class,\
1080 .flags = AVFMT_GENERIC_INDEX, \
1081 .raw_codec_id = codecid,\
1084 IMAGEAUTO_DEMUXER(bmp, AV_CODEC_ID_BMP)
1085 IMAGEAUTO_DEMUXER(dds, AV_CODEC_ID_DDS)
1086 IMAGEAUTO_DEMUXER(dpx, AV_CODEC_ID_DPX)
1087 IMAGEAUTO_DEMUXER(exr, AV_CODEC_ID_EXR)
1088 IMAGEAUTO_DEMUXER(gif, AV_CODEC_ID_GIF)
1089 IMAGEAUTO_DEMUXER(j2k, AV_CODEC_ID_JPEG2000)
1090 IMAGEAUTO_DEMUXER(jpeg, AV_CODEC_ID_MJPEG)
1091 IMAGEAUTO_DEMUXER(jpegls, AV_CODEC_ID_JPEGLS)
1092 IMAGEAUTO_DEMUXER(pam, AV_CODEC_ID_PAM)
1093 IMAGEAUTO_DEMUXER(pbm, AV_CODEC_ID_PBM)
1094 IMAGEAUTO_DEMUXER(pcx, AV_CODEC_ID_PCX)
1095 IMAGEAUTO_DEMUXER(pgm, AV_CODEC_ID_PGM)
1096 IMAGEAUTO_DEMUXER(pgmyuv, AV_CODEC_ID_PGMYUV)
1097 IMAGEAUTO_DEMUXER(pictor, AV_CODEC_ID_PICTOR)
1098 IMAGEAUTO_DEMUXER(png, AV_CODEC_ID_PNG)
1099 IMAGEAUTO_DEMUXER(ppm, AV_CODEC_ID_PPM)
1100 IMAGEAUTO_DEMUXER(psd, AV_CODEC_ID_PSD)
1101 IMAGEAUTO_DEMUXER(qdraw, AV_CODEC_ID_QDRAW)
1102 IMAGEAUTO_DEMUXER(sgi, AV_CODEC_ID_SGI)
1103 IMAGEAUTO_DEMUXER(sunrast, AV_CODEC_ID_SUNRAST)
1104 IMAGEAUTO_DEMUXER(svg, AV_CODEC_ID_SVG)
1105 IMAGEAUTO_DEMUXER(tiff, AV_CODEC_ID_TIFF)
1106 IMAGEAUTO_DEMUXER(webp, AV_CODEC_ID_WEBP)
1107 IMAGEAUTO_DEMUXER(xpm, AV_CODEC_ID_XPM)
1108 IMAGEAUTO_DEMUXER(xwd, AV_CODEC_ID_XWD)