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);
225 st->avg_frame_rate = s->framerate;
228 if (s->width && s->height) {
229 st->codecpar->width = s->width;
230 st->codecpar->height = s->height;
234 if (s->pattern_type == PT_DEFAULT) {
236 s->pattern_type = PT_NONE;
238 s->pattern_type = PT_GLOB_SEQUENCE;
241 if (s->pattern_type == PT_GLOB_SEQUENCE) {
242 s->use_glob = is_glob(s->path);
245 char *p = s->path, *q, *dup;
249 av_log(s1, AV_LOG_WARNING, "Pattern type 'glob_sequence' is deprecated: "
250 "use pattern_type 'glob' instead\n");
252 dup = q = av_strdup(p);
254 /* Do we have room for the next char and a \ insertion? */
255 if ((p - s->path) >= (sizeof(s->path) - 2))
257 if (*q == '%' && strspn(q + 1, "%*?[]{}"))
259 else if (strspn(q, "\\*?[]{}"))
266 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
268 return AVERROR(ENOENT);
271 last_index = s->globstate.gl_pathc - 1;
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);
283 } else if (s->pattern_type == PT_GLOB) {
286 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
288 return AVERROR(ENOENT);
291 last_index = s->globstate.gl_pathc - 1;
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);
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);
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) {
310 st->duration = last_index - first_index + 1;
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;
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;
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 };
335 return AVERROR(ENOMEM);
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;
342 memset(probe_buffer + probe_buffer_size, 0, AVPROBE_PADDING_SIZE);
344 pd.buf = probe_buffer;
345 pd.buf_size = probe_buffer_size;
346 pd.filename = s1->url;
348 while ((fmt = av_demuxer_iterate(&fmt_iter))) {
349 if (fmt->read_header != ff_img_read_header ||
351 (fmt->flags & AVFMT_NOFILE) ||
354 if (fmt->read_probe(&pd) > 0) {
355 st->codecpar->codec_id = fmt->raw_codec_id;
359 if (s1->flags & AVFMT_FLAG_CUSTOM_IO) {
360 avio_seek(s1->pb, 0, SEEK_SET);
361 av_freep(&probe_buffer);
363 ffio_rewind_with_probe_data(s1->pb, &probe_buffer, probe_buffer_size);
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;
372 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
373 pix_fmt != AV_PIX_FMT_NONE)
374 st->codecpar->format = pix_fmt;
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'.
383 static int add_filename_as_pkt_side_data(char *filename, AVPacket *pkt) {
384 int metadata_len, ret;
385 AVDictionary *d = NULL;
386 char *packed_metadata = NULL;
388 av_dict_set(&d, "lavf.image2dec.source_path", filename, 0);
389 av_dict_set(&d, "lavf.image2dec.source_basename", av_basename(filename), 0);
391 packed_metadata = av_packet_pack_dictionary(d, &metadata_len);
393 if (!packed_metadata)
394 return AVERROR(ENOMEM);
395 ret = av_packet_add_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA,
396 packed_metadata, metadata_len);
398 av_freep(&packed_metadata);
404 int ff_img_read_packet(AVFormatContext *s1, AVPacket *pkt)
406 VideoDemuxData *s = s1->priv_data;
407 char filename_bytes[1024];
408 char *filename = filename_bytes;
410 int size[3] = { 0 }, ret[3] = { 0 };
411 AVIOContext *f[3] = { NULL };
412 AVCodecParameters *par = s1->streams[0]->codecpar;
415 /* loop over input */
416 if (s->loop && s->img_number > s->img_last) {
417 s->img_number = s->img_first;
419 if (s->img_number > s->img_last)
421 if (s->pattern_type == PT_NONE) {
422 av_strlcpy(filename_bytes, s->path, sizeof(filename_bytes));
423 } else if (s->use_glob) {
425 filename = s->globstate.gl_pathv[s->img_number];
428 if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
430 s->img_number) < 0 && s->img_number > 1)
433 for (i = 0; i < 3; i++) {
435 !strcmp(filename_bytes, s->path) &&
439 } else if (s1->io_open(s1, &f[i], filename, AVIO_FLAG_READ, NULL) < 0) {
442 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",
446 size[i] = avio_size(f[i]);
448 if (!s->split_planes)
450 filename[strlen(filename) - 1] = 'U' + i;
453 if (par->codec_id == AV_CODEC_ID_NONE) {
454 AVProbeData pd = { 0 };
455 const AVInputFormat *ifmt;
456 uint8_t header[PROBE_BUF_MIN + AVPROBE_PADDING_SIZE];
460 ret = avio_read(f[0], header, PROBE_BUF_MIN);
463 memset(header + ret, 0, sizeof(header) - ret);
464 avio_skip(f[0], -ret);
467 pd.filename = filename;
469 ifmt = av_probe_input_format3(&pd, 1, &score);
470 if (ifmt && ifmt->read_packet == ff_img_read_packet && ifmt->raw_codec_id)
471 par->codec_id = ifmt->raw_codec_id;
474 if (par->codec_id == AV_CODEC_ID_RAWVIDEO && !par->width)
475 infer_size(&par->width, &par->height, size[0]);
478 if (avio_feof(f[0]) && s->loop && s->is_pipe)
479 avio_seek(f[0], 0, SEEK_SET);
482 if (s->frame_size > 0) {
483 size[0] = s->frame_size;
484 } else if (!s1->streams[0]->parser) {
485 size[0] = avio_size(s1->pb);
491 res = av_new_packet(pkt, size[0] + size[1] + size[2]);
495 pkt->stream_index = 0;
496 pkt->flags |= AV_PKT_FLAG_KEY;
497 if (s->ts_from_file) {
498 struct stat img_stat;
499 if (stat(filename, &img_stat)) {
503 pkt->pts = (int64_t)img_stat.st_mtime;
504 #if HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
505 if (s->ts_from_file == 2)
506 pkt->pts = 1000000000*pkt->pts + img_stat.st_mtim.tv_nsec;
508 av_add_index_entry(s1->streams[0], s->img_number, pkt->pts, 0, 0, AVINDEX_KEYFRAME);
509 } else if (!s->is_pipe) {
514 pkt->pos = avio_tell(f[0]);
517 * export_path_metadata must be explicitly enabled via
518 * command line options for path metadata to be exported
519 * as packet side_data.
521 if (!s->is_pipe && s->export_path_metadata == 1) {
522 res = add_filename_as_pkt_side_data(filename, pkt);
528 for (i = 0; i < 3; i++) {
530 ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
531 if (s->loop && s->is_pipe && ret[i] == AVERROR_EOF) {
532 if (avio_seek(f[i], 0, SEEK_SET) >= 0) {
534 ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
537 if (!s->is_pipe && f[i] != s1->pb)
538 ff_format_io_close(s1, &f[i]);
544 if (ret[0] <= 0 || ret[1] < 0 || ret[2] < 0) {
547 } else if (ret[1] < 0) {
549 } else if (ret[2] < 0) {
564 for (i = 0; i < 3; i++) {
566 ff_format_io_close(s1, &f[i]);
572 static int img_read_close(struct AVFormatContext* s1)
575 VideoDemuxData *s = s1->priv_data;
577 globfree(&s->globstate);
583 static int img_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
585 VideoDemuxData *s1 = s->priv_data;
586 AVStream *st = s->streams[0];
588 if (s1->ts_from_file) {
589 int index = av_index_search_timestamp(st, timestamp, flags);
592 s1->img_number = st->internal->index_entries[index].pos;
596 if (timestamp < 0 || !s1->loop && timestamp > s1->img_last - s1->img_first)
598 s1->img_number = timestamp%(s1->img_last - s1->img_first + 1) + s1->img_first;
603 #define OFFSET(x) offsetof(VideoDemuxData, x)
604 #define DEC AV_OPT_FLAG_DECODING_PARAM
605 #define COMMON_OPTIONS \
606 { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, DEC }, \
607 { "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, \
608 { "video_size", "set video size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, DEC }, \
609 { "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, DEC }, \
612 #if CONFIG_IMAGE2_DEMUXER
613 const AVOption ff_img_options[] = {
614 { "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_DEFAULT}, 0, INT_MAX, DEC, "pattern_type"},
615 { "glob_sequence","select glob/sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
616 { "glob", "select glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB }, INT_MIN, INT_MAX, DEC, "pattern_type" },
617 { "sequence", "select sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_SEQUENCE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
618 { "none", "disable pattern matching", 0, AV_OPT_TYPE_CONST, {.i64=PT_NONE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
619 { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, DEC },
620 { "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 },
621 { "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" },
622 { "none", "none", 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, 0, 2, DEC, "ts_type" },
623 { "sec", "second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, 0, 2, DEC, "ts_type" },
624 { "ns", "nano second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 2 }, 0, 2, DEC, "ts_type" },
625 { "export_path_metadata", "enable metadata containing input path information", OFFSET(export_path_metadata), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, DEC }, \
629 static const AVClass img2_class = {
630 .class_name = "image2 demuxer",
631 .item_name = av_default_item_name,
632 .option = ff_img_options,
633 .version = LIBAVUTIL_VERSION_INT,
635 AVInputFormat ff_image2_demuxer = {
637 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
638 .priv_data_size = sizeof(VideoDemuxData),
639 .read_probe = img_read_probe,
640 .read_header = ff_img_read_header,
641 .read_packet = ff_img_read_packet,
642 .read_close = img_read_close,
643 .read_seek = img_read_seek,
644 .flags = AVFMT_NOFILE,
645 .priv_class = &img2_class,
649 const AVOption ff_img2pipe_options[] = {
650 { "frame_size", "force frame size in bytes", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
654 #if CONFIG_IMAGE2PIPE_DEMUXER
655 static const AVClass img2pipe_class = {
656 .class_name = "image2pipe demuxer",
657 .item_name = av_default_item_name,
658 .option = ff_img2pipe_options,
659 .version = LIBAVUTIL_VERSION_INT,
661 AVInputFormat ff_image2pipe_demuxer = {
662 .name = "image2pipe",
663 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
664 .priv_data_size = sizeof(VideoDemuxData),
665 .read_header = ff_img_read_header,
666 .read_packet = ff_img_read_packet,
667 .priv_class = &img2pipe_class,
671 static int bmp_probe(const AVProbeData *p)
673 const uint8_t *b = p->buf;
676 if (AV_RB16(b) != 0x424d)
679 ihsize = AV_RL32(b+14);
680 if (ihsize < 12 || ihsize > 255)
683 if (!AV_RN32(b + 6)) {
684 return AVPROBE_SCORE_EXTENSION + 1;
686 return AVPROBE_SCORE_EXTENSION / 4;
689 static int cri_probe(const AVProbeData *p)
691 const uint8_t *b = p->buf;
694 && AV_RL32(b + 4) == 4
695 && AV_RN32(b + 8) == AV_RN32("DVCC"))
696 return AVPROBE_SCORE_MAX - 1;
700 static int dds_probe(const AVProbeData *p)
702 const uint8_t *b = p->buf;
704 if ( AV_RB64(b) == 0x444453207c000000
707 return AVPROBE_SCORE_MAX - 1;
711 static int dpx_probe(const AVProbeData *p)
713 const uint8_t *b = p->buf;
715 int is_big = (AV_RN32(b) == AV_RN32("SDPX"));
717 if (p->buf_size < 0x304+8)
719 w = is_big ? AV_RB32(p->buf + 0x304) : AV_RL32(p->buf + 0x304);
720 h = is_big ? AV_RB32(p->buf + 0x308) : AV_RL32(p->buf + 0x308);
721 if (w <= 0 || h <= 0)
724 if (is_big || AV_RN32(b) == AV_RN32("XPDS"))
725 return AVPROBE_SCORE_EXTENSION + 1;
729 static int exr_probe(const AVProbeData *p)
731 const uint8_t *b = p->buf;
733 if (AV_RL32(b) == 20000630)
734 return AVPROBE_SCORE_EXTENSION + 1;
738 static int j2k_probe(const AVProbeData *p)
740 const uint8_t *b = p->buf;
742 if (AV_RB64(b) == 0x0000000c6a502020 ||
743 AV_RB32(b) == 0xff4fff51)
744 return AVPROBE_SCORE_EXTENSION + 1;
748 static int jpeg_probe(const AVProbeData *p)
750 const uint8_t *b = p->buf;
753 if (AV_RB16(b) != 0xFFD8 ||
754 AV_RB32(b) == 0xFFD8FFF7)
758 for (i = 0; i < p->buf_size - 3; i++) {
773 i += AV_RB16(&b[i + 2]) + 1;
779 i += AV_RB16(&b[i + 2]) + 1;
780 if (state != SOF0 && state != SOS)
807 i += AV_RB16(&b[i + 2]) + 1;
810 if ( (c > TEM && c < SOF0)
817 return AVPROBE_SCORE_EXTENSION + 1;
819 return AVPROBE_SCORE_EXTENSION / 2;
820 return AVPROBE_SCORE_EXTENSION / 8 + 1;
823 static int jpegls_probe(const AVProbeData *p)
825 const uint8_t *b = p->buf;
827 if (AV_RB32(b) == 0xffd8fff7)
828 return AVPROBE_SCORE_EXTENSION + 1;
832 static int pcx_probe(const AVProbeData *p)
834 const uint8_t *b = p->buf;
836 if ( p->buf_size < 128
840 || av_popcount(b[3]) != 1 || b[3] > 8
841 || AV_RL16(&b[4]) > AV_RL16(&b[8])
842 || AV_RL16(&b[6]) > AV_RL16(&b[10])
846 while (++b < p->buf + 128)
848 return AVPROBE_SCORE_EXTENSION / 4;
850 return AVPROBE_SCORE_EXTENSION + 1;
853 static int qdraw_probe(const AVProbeData *p)
855 const uint8_t *b = p->buf;
857 if ( p->buf_size >= 528
858 && (AV_RB64(b + 520) & 0xFFFFFFFFFFFF) == 0x001102ff0c00
861 return AVPROBE_SCORE_MAX * 3 / 4;
862 if ( (AV_RB64(b + 8) & 0xFFFFFFFFFFFF) == 0x001102ff0c00
865 return AVPROBE_SCORE_EXTENSION / 4;
869 static int pictor_probe(const AVProbeData *p)
871 const uint8_t *b = p->buf;
873 if (AV_RL16(b) == 0x1234)
874 return AVPROBE_SCORE_EXTENSION / 4;
878 static int png_probe(const AVProbeData *p)
880 const uint8_t *b = p->buf;
882 if (AV_RB64(b) == 0x89504e470d0a1a0a)
883 return AVPROBE_SCORE_MAX - 1;
887 static int psd_probe(const AVProbeData *p)
889 const uint8_t *b = p->buf;
893 if (AV_RL32(b) == MKTAG('8','B','P','S')) {
899 if ((b[4] == 0) && (b[5] == 1)) {/* version 1 is PSD, version 2 is PSB */
905 if ((AV_RL32(b+6) == 0) && (AV_RL16(b+10) == 0))/* reserved must be 0 */
908 color_mode = AV_RB16(b+24);
909 if ((color_mode <= 9) && (color_mode != 5) && (color_mode != 6))
912 return AVPROBE_SCORE_EXTENSION + ret;
915 static int sgi_probe(const AVProbeData *p)
917 const uint8_t *b = p->buf;
919 if (AV_RB16(b) == 474 &&
921 (b[3] & ~3) == 0 && b[3] &&
922 (AV_RB16(b + 4) & ~7) == 0 && AV_RB16(b + 4))
923 return AVPROBE_SCORE_EXTENSION + 1;
927 static int sunrast_probe(const AVProbeData *p)
929 const uint8_t *b = p->buf;
931 if (AV_RB32(b) == 0x59a66a95)
932 return AVPROBE_SCORE_EXTENSION + 1;
936 static int svg_probe(const AVProbeData *p)
938 const uint8_t *b = p->buf;
939 const uint8_t *end = p->buf + p->buf_size;
941 if (memcmp(p->buf, "<?xml", 5))
944 int inc = ff_subtitles_next_line(b);
950 if (!memcmp(b, "<svg", 4))
951 return AVPROBE_SCORE_EXTENSION + 1;
956 static int tiff_probe(const AVProbeData *p)
958 const uint8_t *b = p->buf;
960 if (AV_RB32(b) == 0x49492a00 ||
961 AV_RB32(b) == 0x4D4D002a)
962 return AVPROBE_SCORE_EXTENSION + 1;
966 static int webp_probe(const AVProbeData *p)
968 const uint8_t *b = p->buf;
970 if (AV_RB32(b) == 0x52494646 &&
971 AV_RB32(b + 8) == 0x57454250)
972 return AVPROBE_SCORE_MAX - 1;
976 static int pnm_magic_check(const AVProbeData *p, int magic)
978 const uint8_t *b = p->buf;
980 return b[0] == 'P' && b[1] == magic + '0';
983 static inline int pnm_probe(const AVProbeData *p)
985 const uint8_t *b = p->buf;
989 if (b[2] == '\n' && (b[3] == '#' || (b[3] >= '0' && b[3] <= '9')))
990 return AVPROBE_SCORE_EXTENSION + 2;
994 static int pbm_probe(const AVProbeData *p)
996 return pnm_magic_check(p, 1) || pnm_magic_check(p, 4) ? pnm_probe(p) : 0;
999 static inline int pgmx_probe(const AVProbeData *p)
1001 return pnm_magic_check(p, 2) || pnm_magic_check(p, 5) ? pnm_probe(p) : 0;
1004 static int pgm_probe(const AVProbeData *p)
1006 int ret = pgmx_probe(p);
1007 return ret && !av_match_ext(p->filename, "pgmyuv") ? ret : 0;
1010 static int pgmyuv_probe(const AVProbeData *p) // custom FFmpeg format recognized by file extension
1012 int ret = pgmx_probe(p);
1013 return ret && av_match_ext(p->filename, "pgmyuv") ? ret : 0;
1016 static int pgx_probe(const AVProbeData *p)
1018 const uint8_t *b = p->buf;
1019 if (!memcmp(b, "PG ML ", 6))
1020 return AVPROBE_SCORE_EXTENSION + 1;
1024 static int ppm_probe(const AVProbeData *p)
1026 return pnm_magic_check(p, 3) || pnm_magic_check(p, 6) ? pnm_probe(p) : 0;
1029 static int pam_probe(const AVProbeData *p)
1031 return pnm_magic_check(p, 7) ? pnm_probe(p) : 0;
1034 static int xpm_probe(const AVProbeData *p)
1036 const uint8_t *b = p->buf;
1038 if (AV_RB64(b) == 0x2f2a2058504d202a && *(b+8) == '/')
1039 return AVPROBE_SCORE_MAX - 1;
1043 static int xwd_probe(const AVProbeData *p)
1045 const uint8_t *b = p->buf;
1046 unsigned width, bpp, bpad, lsize;
1048 if ( p->buf_size < XWD_HEADER_SIZE
1049 || AV_RB32(b ) < XWD_HEADER_SIZE // header size
1050 || AV_RB32(b + 4) != XWD_VERSION // version
1051 || AV_RB32(b + 8) != XWD_Z_PIXMAP // format
1052 || AV_RB32(b + 12) > 32 || !AV_RB32(b + 12) // depth
1053 || AV_RB32(b + 16) == 0 // width
1054 || AV_RB32(b + 20) == 0 // height
1055 || AV_RB32(b + 28) > 1 // byteorder
1056 || AV_RB32(b + 32) & ~56 || av_popcount(AV_RB32(b + 32)) != 1 // bitmap unit
1057 || AV_RB32(b + 36) > 1 // bitorder
1058 || AV_RB32(b + 40) & ~56 || av_popcount(AV_RB32(b + 40)) != 1 // padding
1059 || AV_RB32(b + 44) > 32 || !AV_RB32(b + 44) // bpp
1060 || AV_RB32(b + 68) > 256) // colours
1063 width = AV_RB32(b + 16);
1064 bpad = AV_RB32(b + 40);
1065 bpp = AV_RB32(b + 44);
1066 lsize = AV_RB32(b + 48);
1067 if (lsize < FFALIGN(width * bpp, bpad) >> 3)
1070 return AVPROBE_SCORE_MAX / 2 + 1;
1073 static int gif_probe(const AVProbeData *p)
1076 if (memcmp(p->buf, gif87a_sig, 6) && memcmp(p->buf, gif89a_sig, 6))
1079 /* width or height contains zero? */
1080 if (!AV_RL16(&p->buf[6]) || !AV_RL16(&p->buf[8]))
1083 return AVPROBE_SCORE_MAX - 1;
1086 static int photocd_probe(const AVProbeData *p)
1088 if (!memcmp(p->buf, "PCD_OPA", 7))
1089 return AVPROBE_SCORE_MAX - 1;
1091 if (p->buf_size < 0x807 || memcmp(p->buf + 0x800, "PCD_IPI", 7))
1094 return AVPROBE_SCORE_MAX - 1;
1097 #define IMAGEAUTO_DEMUXER(imgname, codecid)\
1098 static const AVClass imgname ## _class = {\
1099 .class_name = AV_STRINGIFY(imgname) " demuxer",\
1100 .item_name = av_default_item_name,\
1101 .option = ff_img2pipe_options,\
1102 .version = LIBAVUTIL_VERSION_INT,\
1104 AVInputFormat ff_image_ ## imgname ## _pipe_demuxer = {\
1105 .name = AV_STRINGIFY(imgname) "_pipe",\
1106 .long_name = NULL_IF_CONFIG_SMALL("piped " AV_STRINGIFY(imgname) " sequence"),\
1107 .priv_data_size = sizeof(VideoDemuxData),\
1108 .read_probe = imgname ## _probe,\
1109 .read_header = ff_img_read_header,\
1110 .read_packet = ff_img_read_packet,\
1111 .priv_class = & imgname ## _class,\
1112 .flags = AVFMT_GENERIC_INDEX, \
1113 .raw_codec_id = codecid,\
1116 IMAGEAUTO_DEMUXER(bmp, AV_CODEC_ID_BMP)
1117 IMAGEAUTO_DEMUXER(cri, AV_CODEC_ID_CRI)
1118 IMAGEAUTO_DEMUXER(dds, AV_CODEC_ID_DDS)
1119 IMAGEAUTO_DEMUXER(dpx, AV_CODEC_ID_DPX)
1120 IMAGEAUTO_DEMUXER(exr, AV_CODEC_ID_EXR)
1121 IMAGEAUTO_DEMUXER(gif, AV_CODEC_ID_GIF)
1122 IMAGEAUTO_DEMUXER(j2k, AV_CODEC_ID_JPEG2000)
1123 IMAGEAUTO_DEMUXER(jpeg, AV_CODEC_ID_MJPEG)
1124 IMAGEAUTO_DEMUXER(jpegls, AV_CODEC_ID_JPEGLS)
1125 IMAGEAUTO_DEMUXER(pam, AV_CODEC_ID_PAM)
1126 IMAGEAUTO_DEMUXER(pbm, AV_CODEC_ID_PBM)
1127 IMAGEAUTO_DEMUXER(pcx, AV_CODEC_ID_PCX)
1128 IMAGEAUTO_DEMUXER(pgm, AV_CODEC_ID_PGM)
1129 IMAGEAUTO_DEMUXER(pgmyuv, AV_CODEC_ID_PGMYUV)
1130 IMAGEAUTO_DEMUXER(pgx, AV_CODEC_ID_PGX)
1131 IMAGEAUTO_DEMUXER(photocd, AV_CODEC_ID_PHOTOCD)
1132 IMAGEAUTO_DEMUXER(pictor, AV_CODEC_ID_PICTOR)
1133 IMAGEAUTO_DEMUXER(png, AV_CODEC_ID_PNG)
1134 IMAGEAUTO_DEMUXER(ppm, AV_CODEC_ID_PPM)
1135 IMAGEAUTO_DEMUXER(psd, AV_CODEC_ID_PSD)
1136 IMAGEAUTO_DEMUXER(qdraw, AV_CODEC_ID_QDRAW)
1137 IMAGEAUTO_DEMUXER(sgi, AV_CODEC_ID_SGI)
1138 IMAGEAUTO_DEMUXER(sunrast, AV_CODEC_ID_SUNRAST)
1139 IMAGEAUTO_DEMUXER(svg, AV_CODEC_ID_SVG)
1140 IMAGEAUTO_DEMUXER(tiff, AV_CODEC_ID_TIFF)
1141 IMAGEAUTO_DEMUXER(webp, AV_CODEC_ID_WEBP)
1142 IMAGEAUTO_DEMUXER(xpm, AV_CODEC_ID_XPM)
1143 IMAGEAUTO_DEMUXER(xwd, AV_CODEC_ID_XWD)