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
25 #include "libavutil/avstring.h"
26 #include "libavutil/log.h"
27 #include "libavutil/opt.h"
28 #include "libavutil/pixdesc.h"
29 #include "libavutil/parseutils.h"
30 #include "libavutil/intreadwrite.h"
32 #include "avio_internal.h"
37 /* Locally define as 0 (bitwise-OR no-op) any missing glob options that
38 are non-posix glibc/bsd extensions. */
40 #define GLOB_NOMAGIC 0
46 #endif /* HAVE_GLOB */
48 static const int sizes[][2] = {
60 static int infer_size(int *width_ptr, int *height_ptr, int size)
64 for (i = 0; i < FF_ARRAY_ELEMS(sizes); i++) {
65 if ((sizes[i][0] * sizes[i][1]) == size) {
66 *width_ptr = sizes[i][0];
67 *height_ptr = sizes[i][1];
75 static int is_glob(const char *path)
81 while (p = strchr(p, '%')) {
86 if (span = strspn(p, "*?[]{}"))
89 /* Did we hit a glob char or get to the end? */
97 * Get index range of image files matched by path.
99 * @param pfirst_index pointer to index updated with the first number in the range
100 * @param plast_index pointer to index updated with the last number in the range
101 * @param path path which has to be matched by the image files in the range
102 * @param start_index minimum accepted value for the first index in the range
103 * @return -1 if no image file could be found
105 static int find_image_range(int *pfirst_index, int *plast_index,
106 const char *path, int start_index, int start_index_range)
109 int range, last_index, range1, first_index;
111 /* find the first image */
112 for (first_index = start_index; first_index < start_index + start_index_range; first_index++) {
113 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0) {
116 if (avio_check(buf, AVIO_FLAG_READ) > 0)
120 if (avio_check(buf, AVIO_FLAG_READ) > 0)
123 if (first_index == start_index + start_index_range)
126 /* find the last image */
127 last_index = first_index;
135 if (av_get_frame_filename(buf, sizeof(buf), path,
136 last_index + range1) < 0)
138 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
141 /* just in case... */
142 if (range >= (1 << 30))
145 /* we are sure than image last_index + range exists */
150 *pfirst_index = first_index;
151 *plast_index = last_index;
158 static int img_read_probe(AVProbeData *p)
160 if (p->filename && ff_guess_image2_codec(p->filename)) {
161 if (av_filename_number_test(p->filename))
162 return AVPROBE_SCORE_MAX;
163 else if (is_glob(p->filename))
164 return AVPROBE_SCORE_MAX;
165 else if (av_match_ext(p->filename, "raw") || av_match_ext(p->filename, "gif"))
168 return AVPROBE_SCORE_EXTENSION;
173 int ff_img_read_header(AVFormatContext *s1)
175 VideoDemuxData *s = s1->priv_data;
176 int first_index, last_index;
178 enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE;
180 s1->ctx_flags |= AVFMTCTX_NOHEADER;
182 st = avformat_new_stream(s1, NULL);
184 return AVERROR(ENOMEM);
187 if (s->pixel_format &&
188 (pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) {
189 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n",
191 return AVERROR(EINVAL);
194 av_strlcpy(s->path, s1->filename, sizeof(s->path));
199 if (s1->iformat->flags & AVFMT_NOFILE)
203 st->need_parsing = AVSTREAM_PARSE_FULL;
206 if (s->ts_from_file == 2) {
207 #if !HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
208 av_log(s1, AV_LOG_ERROR, "POSIX.1-2008 not supported, nanosecond file timestamps unavailable\n");
209 return AVERROR(ENOSYS);
211 avpriv_set_pts_info(st, 64, 1, 1000000000);
212 } else if (s->ts_from_file)
213 avpriv_set_pts_info(st, 64, 1, 1);
215 avpriv_set_pts_info(st, 64, s->framerate.den, s->framerate.num);
217 if (s->width && s->height) {
218 st->codec->width = s->width;
219 st->codec->height = s->height;
223 if (s->pattern_type == PT_GLOB_SEQUENCE) {
224 s->use_glob = is_glob(s->path);
226 char *p = s->path, *q, *dup;
229 av_log(s1, AV_LOG_WARNING, "Pattern type 'glob_sequence' is deprecated: "
230 "use pattern_type 'glob' instead\n");
232 dup = q = av_strdup(p);
234 /* Do we have room for the next char and a \ insertion? */
235 if ((p - s->path) >= (sizeof(s->path) - 2))
237 if (*q == '%' && strspn(q + 1, "%*?[]{}"))
239 else if (strspn(q, "\\*?[]{}"))
246 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
248 return AVERROR(ENOENT);
251 last_index = s->globstate.gl_pathc - 1;
255 if ((s->pattern_type == PT_GLOB_SEQUENCE && !s->use_glob) || s->pattern_type == PT_SEQUENCE) {
256 if (find_image_range(&first_index, &last_index, s->path,
257 s->start_number, s->start_number_range) < 0) {
258 av_log(s1, AV_LOG_ERROR,
259 "Could find no file with path '%s' and index in the range %d-%d\n",
260 s->path, s->start_number, s->start_number + s->start_number_range - 1);
261 return AVERROR(ENOENT);
263 } else if (s->pattern_type == PT_GLOB) {
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;
274 av_log(s1, AV_LOG_ERROR,
275 "Pattern type 'glob' was selected but globbing "
276 "is not supported by this libavformat build\n");
277 return AVERROR(ENOSYS);
279 } else if (s->pattern_type != PT_GLOB_SEQUENCE) {
280 av_log(s1, AV_LOG_ERROR,
281 "Unknown value '%d' for pattern_type option\n", s->pattern_type);
282 return AVERROR(EINVAL);
284 s->img_first = first_index;
285 s->img_last = last_index;
286 s->img_number = first_index;
287 /* compute duration */
288 if (!s->ts_from_file) {
290 st->duration = last_index - first_index + 1;
294 if (s1->video_codec_id) {
295 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
296 st->codec->codec_id = s1->video_codec_id;
297 } else if (s1->audio_codec_id) {
298 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
299 st->codec->codec_id = s1->audio_codec_id;
300 } else if (s1->iformat->raw_codec_id) {
301 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
302 st->codec->codec_id = s1->iformat->raw_codec_id;
304 const char *str = strrchr(s->path, '.');
305 s->split_planes = str && !av_strcasecmp(str + 1, "y");
306 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
308 int probe_buffer_size = 2048;
309 uint8_t *probe_buffer = av_realloc(NULL, probe_buffer_size + AVPROBE_PADDING_SIZE);
310 AVInputFormat *fmt = NULL;
314 return AVERROR(ENOMEM);
316 probe_buffer_size = avio_read(s1->pb, probe_buffer, probe_buffer_size);
317 if (probe_buffer_size < 0) {
318 av_free(probe_buffer);
319 return probe_buffer_size;
321 memset(probe_buffer + probe_buffer_size, 0, AVPROBE_PADDING_SIZE);
323 pd.buf = probe_buffer;
324 pd.buf_size = probe_buffer_size;
325 pd.filename = s1->filename;
327 while ((fmt = av_iformat_next(fmt))) {
328 if (fmt->read_header != ff_img_read_header ||
330 (fmt->flags & AVFMT_NOFILE) ||
333 if (fmt->read_probe(&pd) > 0) {
334 st->codec->codec_id = fmt->raw_codec_id;
338 ffio_rewind_with_probe_data(s1->pb, &probe_buffer, probe_buffer_size);
340 if (st->codec->codec_id == AV_CODEC_ID_NONE)
341 st->codec->codec_id = ff_guess_image2_codec(s->path);
342 if (st->codec->codec_id == AV_CODEC_ID_LJPEG)
343 st->codec->codec_id = AV_CODEC_ID_MJPEG;
344 if (st->codec->codec_id == AV_CODEC_ID_ALIAS_PIX) // we cannot distingiush this from BRENDER_PIX
345 st->codec->codec_id = AV_CODEC_ID_NONE;
347 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
348 pix_fmt != AV_PIX_FMT_NONE)
349 st->codec->pix_fmt = pix_fmt;
354 int ff_img_read_packet(AVFormatContext *s1, AVPacket *pkt)
356 VideoDemuxData *s = s1->priv_data;
357 char filename_bytes[1024];
358 char *filename = filename_bytes;
360 int size[3] = { 0 }, ret[3] = { 0 };
361 AVIOContext *f[3] = { NULL };
362 AVCodecContext *codec = s1->streams[0]->codec;
365 /* loop over input */
366 if (s->loop && s->img_number > s->img_last) {
367 s->img_number = s->img_first;
369 if (s->img_number > s->img_last)
373 filename = s->globstate.gl_pathv[s->img_number];
376 if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
378 s->img_number) < 0 && s->img_number > 1)
381 for (i = 0; i < 3; i++) {
382 if (avio_open2(&f[i], filename, AVIO_FLAG_READ,
383 &s1->interrupt_callback, NULL) < 0) {
386 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",
390 size[i] = avio_size(f[i]);
392 if (!s->split_planes)
394 filename[strlen(filename) - 1] = 'U' + i;
397 if (codec->codec_id == AV_CODEC_ID_NONE) {
400 uint8_t header[PROBE_BUF_MIN + AVPROBE_PADDING_SIZE];
404 ret = avio_read(f[0], header, PROBE_BUF_MIN);
407 memset(header + ret, 0, sizeof(header) - ret);
408 avio_skip(f[0], -ret);
411 pd.filename = filename;
413 ifmt = av_probe_input_format3(&pd, 1, &score);
414 if (ifmt && ifmt->read_packet == ff_img_read_packet && ifmt->raw_codec_id)
415 codec->codec_id = ifmt->raw_codec_id;
418 if (codec->codec_id == AV_CODEC_ID_RAWVIDEO && !codec->width)
419 infer_size(&codec->width, &codec->height, size[0]);
424 if (s->frame_size > 0) {
425 size[0] = s->frame_size;
426 } else if (!s1->streams[0]->parser) {
427 size[0] = avio_size(s1->pb);
433 if (av_new_packet(pkt, size[0] + size[1] + size[2]) < 0)
434 return AVERROR(ENOMEM);
435 pkt->stream_index = 0;
436 pkt->flags |= AV_PKT_FLAG_KEY;
437 if (s->ts_from_file) {
438 struct stat img_stat;
439 if (stat(filename, &img_stat))
441 pkt->pts = (int64_t)img_stat.st_mtime;
442 #if HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
443 if (s->ts_from_file == 2)
444 pkt->pts = 1000000000*pkt->pts + img_stat.st_mtim.tv_nsec;
446 av_add_index_entry(s1->streams[0], s->img_number, pkt->pts, 0, 0, AVINDEX_KEYFRAME);
447 } else if (!s->is_pipe) {
452 for (i = 0; i < 3; i++) {
454 ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
462 if (ret[0] <= 0 || ret[1] < 0 || ret[2] < 0) {
464 return AVERROR(EIO); /* signal EOF */
473 static int img_read_close(struct AVFormatContext* s1)
475 VideoDemuxData *s = s1->priv_data;
478 globfree(&s->globstate);
484 static int img_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
486 VideoDemuxData *s1 = s->priv_data;
487 AVStream *st = s->streams[0];
489 if (s1->ts_from_file) {
490 int index = av_index_search_timestamp(st, timestamp, flags);
493 s1->img_number = st->index_entries[index].pos;
497 if (timestamp < 0 || !s1->loop && timestamp > s1->img_last - s1->img_first)
499 s1->img_number = timestamp%(s1->img_last - s1->img_first + 1) + s1->img_first;
504 #define OFFSET(x) offsetof(VideoDemuxData, x)
505 #define DEC AV_OPT_FLAG_DECODING_PARAM
506 static const AVOption options[] = {
507 { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, DEC },
508 { "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, DEC },
510 { "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_GLOB_SEQUENCE}, 0, INT_MAX, DEC, "pattern_type"},
511 { "glob_sequence","select glob/sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
512 { "glob", "select glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB }, INT_MIN, INT_MAX, DEC, "pattern_type" },
513 { "sequence", "select sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_SEQUENCE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
515 { "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
516 { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
517 { "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 },
518 { "video_size", "set video size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, DEC },
519 { "frame_size", "force frame size in bytes", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
520 { "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" },
521 { "none", "none", 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, 0, 2, DEC, "ts_type" },
522 { "sec", "second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, 0, 2, DEC, "ts_type" },
523 { "ns", "nano second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 2 }, 0, 2, DEC, "ts_type" },
527 #if CONFIG_IMAGE2_DEMUXER
528 static const AVClass img2_class = {
529 .class_name = "image2 demuxer",
530 .item_name = av_default_item_name,
532 .version = LIBAVUTIL_VERSION_INT,
534 AVInputFormat ff_image2_demuxer = {
536 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
537 .priv_data_size = sizeof(VideoDemuxData),
538 .read_probe = img_read_probe,
539 .read_header = ff_img_read_header,
540 .read_packet = ff_img_read_packet,
541 .read_close = img_read_close,
542 .read_seek = img_read_seek,
543 .flags = AVFMT_NOFILE,
544 .priv_class = &img2_class,
547 #if CONFIG_IMAGE2PIPE_DEMUXER
548 static const AVClass img2pipe_class = {
549 .class_name = "image2pipe demuxer",
550 .item_name = av_default_item_name,
552 .version = LIBAVUTIL_VERSION_INT,
554 AVInputFormat ff_image2pipe_demuxer = {
555 .name = "image2pipe",
556 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
557 .priv_data_size = sizeof(VideoDemuxData),
558 .read_header = ff_img_read_header,
559 .read_packet = ff_img_read_packet,
560 .priv_class = &img2pipe_class,
564 static int bmp_probe(AVProbeData *p)
566 const uint8_t *b = p->buf;
569 if (AV_RB16(b) != 0x424d)
572 ihsize = AV_RL32(b+14);
573 if (ihsize < 12 || ihsize > 255)
576 if (!AV_RN32(b + 6)) {
577 return AVPROBE_SCORE_EXTENSION + 1;
579 return AVPROBE_SCORE_EXTENSION / 4;
584 static int dpx_probe(AVProbeData *p)
586 const uint8_t *b = p->buf;
588 if (AV_RN32(b) == AV_RN32("SDPX") || AV_RN32(b) == AV_RN32("XPDS"))
589 return AVPROBE_SCORE_EXTENSION + 1;
593 static int exr_probe(AVProbeData *p)
595 const uint8_t *b = p->buf;
597 if (AV_RL32(b) == 20000630)
598 return AVPROBE_SCORE_EXTENSION + 1;
602 static int j2k_probe(AVProbeData *p)
604 const uint8_t *b = p->buf;
606 if (AV_RB64(b) == 0x0000000c6a502020 ||
607 AV_RB32(b) == 0xff4fff51)
608 return AVPROBE_SCORE_EXTENSION + 1;
612 static int jpegls_probe(AVProbeData *p)
614 const uint8_t *b = p->buf;
616 if (AV_RB32(b) == 0xffd8fff7)
617 return AVPROBE_SCORE_EXTENSION + 1;
621 static int pictor_probe(AVProbeData *p)
623 const uint8_t *b = p->buf;
625 if (AV_RL16(b) == 0x1234)
626 return AVPROBE_SCORE_EXTENSION / 4;
630 static int png_probe(AVProbeData *p)
632 const uint8_t *b = p->buf;
634 if (AV_RB64(b) == 0x89504e470d0a1a0a)
635 return AVPROBE_SCORE_MAX - 1;
639 static int sgi_probe(AVProbeData *p)
641 const uint8_t *b = p->buf;
643 if (AV_RB16(b) == 474 &&
645 (b[3] & ~3) == 0 && b[3] &&
646 (AV_RB16(b + 4) & ~7) == 0 && AV_RB16(b + 4))
647 return AVPROBE_SCORE_EXTENSION + 1;
651 static int sunrast_probe(AVProbeData *p)
653 const uint8_t *b = p->buf;
655 if (AV_RB32(b) == 0x59a66a95)
656 return AVPROBE_SCORE_EXTENSION + 1;
660 static int tiff_probe(AVProbeData *p)
662 const uint8_t *b = p->buf;
664 if (AV_RB32(b) == 0x49492a00 ||
665 AV_RB32(b) == 0x4D4D002a)
666 return AVPROBE_SCORE_EXTENSION + 1;
670 static int webp_probe(AVProbeData *p)
672 const uint8_t *b = p->buf;
674 if (AV_RB32(b) == 0x52494646 &&
675 AV_RB32(b + 8) == 0x57454250)
676 return AVPROBE_SCORE_MAX - 1;
680 #define IMAGEAUTO_DEMUXER(imgname, codecid)\
681 static const AVClass imgname ## _class = {\
682 .class_name = AV_STRINGIFY(imgname) " demuxer",\
683 .item_name = av_default_item_name,\
685 .version = LIBAVUTIL_VERSION_INT,\
687 AVInputFormat ff_image_ ## imgname ## _pipe_demuxer = {\
688 .name = AV_STRINGIFY(imgname) "_pipe",\
689 .long_name = NULL_IF_CONFIG_SMALL("piped " AV_STRINGIFY(imgname) " sequence"),\
690 .priv_data_size = sizeof(VideoDemuxData),\
691 .read_probe = imgname ## _probe,\
692 .read_header = ff_img_read_header,\
693 .read_packet = ff_img_read_packet,\
694 .priv_class = & imgname ## _class,\
695 .raw_codec_id = codecid,\
698 IMAGEAUTO_DEMUXER(bmp, AV_CODEC_ID_BMP)
699 IMAGEAUTO_DEMUXER(dpx, AV_CODEC_ID_DPX)
700 IMAGEAUTO_DEMUXER(exr, AV_CODEC_ID_EXR)
701 IMAGEAUTO_DEMUXER(j2k, AV_CODEC_ID_JPEG2000)
702 IMAGEAUTO_DEMUXER(jpegls, AV_CODEC_ID_JPEGLS)
703 IMAGEAUTO_DEMUXER(pictor, AV_CODEC_ID_PICTOR)
704 IMAGEAUTO_DEMUXER(png, AV_CODEC_ID_PNG)
705 IMAGEAUTO_DEMUXER(sgi, AV_CODEC_ID_SGI)
706 IMAGEAUTO_DEMUXER(sunrast, AV_CODEC_ID_SUNRAST)
707 IMAGEAUTO_DEMUXER(tiff, AV_CODEC_ID_TIFF)
708 IMAGEAUTO_DEMUXER(webp, AV_CODEC_ID_WEBP)