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"
36 /* Locally define as 0 (bitwise-OR no-op) any missing glob options that
37 are non-posix glibc/bsd extensions. */
39 #define GLOB_NOMAGIC 0
45 #endif /* HAVE_GLOB */
47 static const int sizes[][2] = {
59 static int infer_size(int *width_ptr, int *height_ptr, int size)
63 for (i = 0; i < FF_ARRAY_ELEMS(sizes); i++) {
64 if ((sizes[i][0] * sizes[i][1]) == size) {
65 *width_ptr = sizes[i][0];
66 *height_ptr = sizes[i][1];
74 static int is_glob(const char *path)
80 while (p = strchr(p, '%')) {
85 if (span = strspn(p, "*?[]{}"))
88 /* Did we hit a glob char or get to the end? */
96 * Get index range of image files matched by path.
98 * @param pfirst_index pointer to index updated with the first number in the range
99 * @param plast_index pointer to index updated with the last number in the range
100 * @param path path which has to be matched by the image files in the range
101 * @param start_index minimum accepted value for the first index in the range
102 * @return -1 if no image file could be found
104 static int find_image_range(int *pfirst_index, int *plast_index,
105 const char *path, int start_index, int start_index_range)
108 int range, last_index, range1, first_index;
110 /* find the first image */
111 for (first_index = start_index; first_index < start_index + start_index_range; first_index++) {
112 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0) {
115 if (avio_check(buf, AVIO_FLAG_READ) > 0)
119 if (avio_check(buf, AVIO_FLAG_READ) > 0)
122 if (first_index == start_index + start_index_range)
125 /* find the last image */
126 last_index = first_index;
134 if (av_get_frame_filename(buf, sizeof(buf), path,
135 last_index + range1) < 0)
137 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
140 /* just in case... */
141 if (range >= (1 << 30))
144 /* we are sure than image last_index + range exists */
149 *pfirst_index = first_index;
150 *plast_index = last_index;
157 static int img_read_probe(AVProbeData *p)
159 if (p->filename && ff_guess_image2_codec(p->filename)) {
160 if (av_filename_number_test(p->filename))
161 return AVPROBE_SCORE_MAX;
162 else if (is_glob(p->filename))
163 return AVPROBE_SCORE_MAX;
164 else if (av_match_ext(p->filename, "raw") || av_match_ext(p->filename, "gif"))
167 return AVPROBE_SCORE_EXTENSION;
172 int ff_img_read_header(AVFormatContext *s1)
174 VideoDemuxData *s = s1->priv_data;
175 int first_index, last_index;
177 enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE;
179 s1->ctx_flags |= AVFMTCTX_NOHEADER;
181 st = avformat_new_stream(s1, NULL);
183 return AVERROR(ENOMEM);
186 if (s->pixel_format &&
187 (pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) {
188 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n",
190 return AVERROR(EINVAL);
193 av_strlcpy(s->path, s1->filename, sizeof(s->path));
198 if (s1->iformat->flags & AVFMT_NOFILE)
202 st->need_parsing = AVSTREAM_PARSE_FULL;
205 if (s->ts_from_file == 2) {
206 #if !HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
207 av_log(s1, AV_LOG_ERROR, "POSIX.1-2008 not supported, nanosecond file timestamps unavailable\n");
208 return AVERROR(ENOSYS);
210 avpriv_set_pts_info(st, 64, 1, 1000000000);
211 } else if (s->ts_from_file)
212 avpriv_set_pts_info(st, 64, 1, 1);
214 avpriv_set_pts_info(st, 64, s->framerate.den, s->framerate.num);
216 if (s->width && s->height) {
217 st->codec->width = s->width;
218 st->codec->height = s->height;
222 if (s->pattern_type == PT_GLOB_SEQUENCE) {
223 s->use_glob = is_glob(s->path);
225 char *p = s->path, *q, *dup;
228 av_log(s1, AV_LOG_WARNING, "Pattern type 'glob_sequence' is deprecated: "
229 "use pattern_type 'glob' instead\n");
231 dup = q = av_strdup(p);
233 /* Do we have room for the next char and a \ insertion? */
234 if ((p - s->path) >= (sizeof(s->path) - 2))
236 if (*q == '%' && strspn(q + 1, "%*?[]{}"))
238 else if (strspn(q, "\\*?[]{}"))
245 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
247 return AVERROR(ENOENT);
250 last_index = s->globstate.gl_pathc - 1;
254 if ((s->pattern_type == PT_GLOB_SEQUENCE && !s->use_glob) || s->pattern_type == PT_SEQUENCE) {
255 if (find_image_range(&first_index, &last_index, s->path,
256 s->start_number, s->start_number_range) < 0) {
257 av_log(s1, AV_LOG_ERROR,
258 "Could find no file with path '%s' and index in the range %d-%d\n",
259 s->path, s->start_number, s->start_number + s->start_number_range - 1);
260 return AVERROR(ENOENT);
262 } else if (s->pattern_type == PT_GLOB) {
265 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
267 return AVERROR(ENOENT);
270 last_index = s->globstate.gl_pathc - 1;
273 av_log(s1, AV_LOG_ERROR,
274 "Pattern type 'glob' was selected but globbing "
275 "is not supported by this libavformat build\n");
276 return AVERROR(ENOSYS);
278 } else if (s->pattern_type != PT_GLOB_SEQUENCE) {
279 av_log(s1, AV_LOG_ERROR,
280 "Unknown value '%d' for pattern_type option\n", s->pattern_type);
281 return AVERROR(EINVAL);
283 s->img_first = first_index;
284 s->img_last = last_index;
285 s->img_number = first_index;
286 /* compute duration */
287 if (!s->ts_from_file) {
289 st->duration = last_index - first_index + 1;
293 if (s1->video_codec_id) {
294 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
295 st->codec->codec_id = s1->video_codec_id;
296 } else if (s1->audio_codec_id) {
297 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
298 st->codec->codec_id = s1->audio_codec_id;
299 } else if (s1->iformat->raw_codec_id) {
300 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
301 st->codec->codec_id = s1->iformat->raw_codec_id;
303 const char *str = strrchr(s->path, '.');
304 s->split_planes = str && !av_strcasecmp(str + 1, "y");
305 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
307 uint8_t probe_buffer[AVPROBE_PADDING_SIZE] = {0};
308 AVInputFormat *fmt = NULL;
310 int ret = avio_read(s1->pb, probe_buffer, 8);
312 return AVERROR(EINVAL);
313 avio_seek(s1->pb, -8, SEEK_CUR);
315 pd.buf = probe_buffer;
317 pd.filename = s1->filename;
319 while ((fmt = av_iformat_next(fmt))) {
320 if (fmt->read_header != ff_img_read_header ||
322 (fmt->flags & AVFMT_NOFILE) ||
325 if (fmt->read_probe(&pd) > 0) {
326 st->codec->codec_id = fmt->raw_codec_id;
331 if (st->codec->codec_id == AV_CODEC_ID_NONE)
332 st->codec->codec_id = ff_guess_image2_codec(s->path);
333 if (st->codec->codec_id == AV_CODEC_ID_LJPEG)
334 st->codec->codec_id = AV_CODEC_ID_MJPEG;
335 if (st->codec->codec_id == AV_CODEC_ID_ALIAS_PIX) // we cannot distingiush this from BRENDER_PIX
336 st->codec->codec_id = AV_CODEC_ID_NONE;
338 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
339 pix_fmt != AV_PIX_FMT_NONE)
340 st->codec->pix_fmt = pix_fmt;
345 int ff_img_read_packet(AVFormatContext *s1, AVPacket *pkt)
347 VideoDemuxData *s = s1->priv_data;
348 char filename_bytes[1024];
349 char *filename = filename_bytes;
351 int size[3] = { 0 }, ret[3] = { 0 };
352 AVIOContext *f[3] = { NULL };
353 AVCodecContext *codec = s1->streams[0]->codec;
356 /* loop over input */
357 if (s->loop && s->img_number > s->img_last) {
358 s->img_number = s->img_first;
360 if (s->img_number > s->img_last)
364 filename = s->globstate.gl_pathv[s->img_number];
367 if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
369 s->img_number) < 0 && s->img_number > 1)
372 for (i = 0; i < 3; i++) {
373 if (avio_open2(&f[i], filename, AVIO_FLAG_READ,
374 &s1->interrupt_callback, NULL) < 0) {
377 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",
381 size[i] = avio_size(f[i]);
383 if (!s->split_planes)
385 filename[strlen(filename) - 1] = 'U' + i;
388 if (codec->codec_id == AV_CODEC_ID_NONE) {
391 uint8_t header[PROBE_BUF_MIN + AVPROBE_PADDING_SIZE];
395 ret = avio_read(f[0], header, PROBE_BUF_MIN);
398 memset(header + ret, 0, sizeof(header) - ret);
399 avio_skip(f[0], -ret);
402 pd.filename = filename;
404 ifmt = av_probe_input_format3(&pd, 1, &score);
405 if (ifmt && ifmt->read_packet == ff_img_read_packet && ifmt->raw_codec_id)
406 codec->codec_id = ifmt->raw_codec_id;
409 if (codec->codec_id == AV_CODEC_ID_RAWVIDEO && !codec->width)
410 infer_size(&codec->width, &codec->height, size[0]);
415 if (s->frame_size > 0) {
416 size[0] = s->frame_size;
417 } else if (!s1->streams[0]->parser) {
418 size[0] = avio_size(s1->pb);
424 if (av_new_packet(pkt, size[0] + size[1] + size[2]) < 0)
425 return AVERROR(ENOMEM);
426 pkt->stream_index = 0;
427 pkt->flags |= AV_PKT_FLAG_KEY;
428 if (s->ts_from_file) {
429 struct stat img_stat;
430 if (stat(filename, &img_stat))
432 pkt->pts = (int64_t)img_stat.st_mtime;
433 #if HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
434 if (s->ts_from_file == 2)
435 pkt->pts = 1000000000*pkt->pts + img_stat.st_mtim.tv_nsec;
437 av_add_index_entry(s1->streams[0], s->img_number, pkt->pts, 0, 0, AVINDEX_KEYFRAME);
438 } else if (!s->is_pipe) {
443 for (i = 0; i < 3; i++) {
445 ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
453 if (ret[0] <= 0 || ret[1] < 0 || ret[2] < 0) {
455 return AVERROR(EIO); /* signal EOF */
464 static int img_read_close(struct AVFormatContext* s1)
466 VideoDemuxData *s = s1->priv_data;
469 globfree(&s->globstate);
475 static int img_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
477 VideoDemuxData *s1 = s->priv_data;
478 AVStream *st = s->streams[0];
480 if (s1->ts_from_file) {
481 int index = av_index_search_timestamp(st, timestamp, flags);
484 s1->img_number = st->index_entries[index].pos;
488 if (timestamp < 0 || !s1->loop && timestamp > s1->img_last - s1->img_first)
490 s1->img_number = timestamp%(s1->img_last - s1->img_first + 1) + s1->img_first;
495 #define OFFSET(x) offsetof(VideoDemuxData, x)
496 #define DEC AV_OPT_FLAG_DECODING_PARAM
497 static const AVOption options[] = {
498 { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, DEC },
499 { "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, DEC },
501 { "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_GLOB_SEQUENCE}, 0, INT_MAX, DEC, "pattern_type"},
502 { "glob_sequence","select glob/sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
503 { "glob", "select glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB }, INT_MIN, INT_MAX, DEC, "pattern_type" },
504 { "sequence", "select sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_SEQUENCE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
506 { "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
507 { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
508 { "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 },
509 { "video_size", "set video size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, DEC },
510 { "frame_size", "force frame size in bytes", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
511 { "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" },
512 { "none", "none", 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, 0, 2, DEC, "ts_type" },
513 { "sec", "second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, 0, 2, DEC, "ts_type" },
514 { "ns", "nano second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 2 }, 0, 2, DEC, "ts_type" },
518 #if CONFIG_IMAGE2_DEMUXER
519 static const AVClass img2_class = {
520 .class_name = "image2 demuxer",
521 .item_name = av_default_item_name,
523 .version = LIBAVUTIL_VERSION_INT,
525 AVInputFormat ff_image2_demuxer = {
527 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
528 .priv_data_size = sizeof(VideoDemuxData),
529 .read_probe = img_read_probe,
530 .read_header = ff_img_read_header,
531 .read_packet = ff_img_read_packet,
532 .read_close = img_read_close,
533 .read_seek = img_read_seek,
534 .flags = AVFMT_NOFILE,
535 .priv_class = &img2_class,
538 #if CONFIG_IMAGE2PIPE_DEMUXER
539 static const AVClass img2pipe_class = {
540 .class_name = "image2pipe demuxer",
541 .item_name = av_default_item_name,
543 .version = LIBAVUTIL_VERSION_INT,
545 AVInputFormat ff_image2pipe_demuxer = {
546 .name = "image2pipe",
547 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
548 .priv_data_size = sizeof(VideoDemuxData),
549 .read_header = ff_img_read_header,
550 .read_packet = ff_img_read_packet,
551 .priv_class = &img2pipe_class,
555 static int bmp_probe(AVProbeData *p)
557 const uint8_t *b = p->buf;
559 if (AV_RB16(b) == 0x424d)
560 if (!AV_RN32(b + 6)) {
561 return AVPROBE_SCORE_EXTENSION + 1;
563 return AVPROBE_SCORE_EXTENSION / 4;
568 static int dpx_probe(AVProbeData *p)
570 const uint8_t *b = p->buf;
572 if (AV_RN32(b) == AV_RN32("SDPX") || AV_RN32(b) == AV_RN32("XPDS"))
573 return AVPROBE_SCORE_EXTENSION + 1;
577 static int exr_probe(AVProbeData *p)
579 const uint8_t *b = p->buf;
581 if (AV_RL32(b) == 20000630)
582 return AVPROBE_SCORE_EXTENSION + 1;
586 static int pictor_probe(AVProbeData *p)
588 const uint8_t *b = p->buf;
590 if (AV_RL16(b) == 0x1234)
591 return AVPROBE_SCORE_EXTENSION / 4;
595 static int png_probe(AVProbeData *p)
597 const uint8_t *b = p->buf;
599 if (AV_RB64(b) == 0x89504e470d0a1a0a)
600 return AVPROBE_SCORE_MAX - 1;
604 static int sgi_probe(AVProbeData *p)
606 const uint8_t *b = p->buf;
608 if (AV_RB16(b) == 474 &&
610 (b[3] & ~3) == 0 && b[3] &&
611 (AV_RB16(b + 4) & ~7) == 0 && AV_RB16(b + 4))
612 return AVPROBE_SCORE_EXTENSION + 1;
616 static int sunrast_probe(AVProbeData *p)
618 const uint8_t *b = p->buf;
620 if (AV_RB32(b) == 0x59a66a95)
621 return AVPROBE_SCORE_EXTENSION + 1;
625 static int tiff_probe(AVProbeData *p)
627 const uint8_t *b = p->buf;
629 if (AV_RB32(b) == 0x49492a00)
630 return AVPROBE_SCORE_EXTENSION + 1;
634 #define IMAGEAUTO_DEMUXER(imgname, codecid)\
635 static const AVClass imgname ## _class = {\
636 .class_name = AV_STRINGIFY(imgname) " demuxer",\
637 .item_name = av_default_item_name,\
639 .version = LIBAVUTIL_VERSION_INT,\
641 AVInputFormat ff_image_ ## imgname ## _pipe_demuxer = {\
642 .name = AV_STRINGIFY(imgname) "_pipe",\
643 .priv_data_size = sizeof(VideoDemuxData),\
644 .read_probe = imgname ## _probe,\
645 .read_header = ff_img_read_header,\
646 .read_packet = ff_img_read_packet,\
647 .read_close = img_read_close,\
648 .read_seek = img_read_seek,\
649 .priv_class = & imgname ## _class,\
650 .raw_codec_id = codecid,\
653 IMAGEAUTO_DEMUXER(bmp, AV_CODEC_ID_BMP)
654 IMAGEAUTO_DEMUXER(dpx, AV_CODEC_ID_DPX)
655 IMAGEAUTO_DEMUXER(exr, AV_CODEC_ID_EXR)
656 IMAGEAUTO_DEMUXER(pictor, AV_CODEC_ID_PICTOR)
657 IMAGEAUTO_DEMUXER(png, AV_CODEC_ID_PNG)
658 IMAGEAUTO_DEMUXER(sgi, AV_CODEC_ID_SGI)
659 IMAGEAUTO_DEMUXER(sunrast, AV_CODEC_ID_SUNRAST)
660 IMAGEAUTO_DEMUXER(tiff, AV_CODEC_ID_TIFF)