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"
35 /* Locally define as 0 (bitwise-OR no-op) any missing glob options that
36 are non-posix glibc/bsd extensions. */
38 #define GLOB_NOMAGIC 0
44 #endif /* HAVE_GLOB */
46 static const int sizes[][2] = {
58 static int infer_size(int *width_ptr, int *height_ptr, int size)
62 for (i = 0; i < FF_ARRAY_ELEMS(sizes); i++) {
63 if ((sizes[i][0] * sizes[i][1]) == size) {
64 *width_ptr = sizes[i][0];
65 *height_ptr = sizes[i][1];
73 static int is_glob(const char *path)
79 while (p = strchr(p, '%')) {
84 if (span = strspn(p, "*?[]{}"))
87 /* Did we hit a glob char or get to the end? */
95 * Get index range of image files matched by path.
97 * @param pfirst_index pointer to index updated with the first number in the range
98 * @param plast_index pointer to index updated with the last number in the range
99 * @param path path which has to be matched by the image files in the range
100 * @param start_index minimum accepted value for the first index in the range
101 * @return -1 if no image file could be found
103 static int find_image_range(int *pfirst_index, int *plast_index,
104 const char *path, int start_index, int start_index_range)
107 int range, last_index, range1, first_index;
109 /* find the first image */
110 for (first_index = start_index; first_index < start_index + start_index_range; first_index++) {
111 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0) {
114 if (avio_check(buf, AVIO_FLAG_READ) > 0)
118 if (avio_check(buf, AVIO_FLAG_READ) > 0)
121 if (first_index == start_index + start_index_range)
124 /* find the last image */
125 last_index = first_index;
133 if (av_get_frame_filename(buf, sizeof(buf), path,
134 last_index + range1) < 0)
136 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
139 /* just in case... */
140 if (range >= (1 << 30))
143 /* we are sure than image last_index + range exists */
148 *pfirst_index = first_index;
149 *plast_index = last_index;
156 static int img_read_probe(AVProbeData *p)
158 if (p->filename && ff_guess_image2_codec(p->filename)) {
159 if (av_filename_number_test(p->filename))
160 return AVPROBE_SCORE_MAX;
161 else if (is_glob(p->filename))
162 return AVPROBE_SCORE_MAX;
163 else if (av_match_ext(p->filename, "raw") || av_match_ext(p->filename, "gif"))
166 return AVPROBE_SCORE_EXTENSION;
171 int ff_img_read_header(AVFormatContext *s1)
173 VideoDemuxData *s = s1->priv_data;
174 int first_index, last_index;
176 enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE;
178 s1->ctx_flags |= AVFMTCTX_NOHEADER;
180 st = avformat_new_stream(s1, NULL);
182 return AVERROR(ENOMEM);
185 if (s->pixel_format &&
186 (pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) {
187 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n",
189 return AVERROR(EINVAL);
192 av_strlcpy(s->path, s1->filename, sizeof(s->path));
197 if (s1->iformat->flags & AVFMT_NOFILE)
201 st->need_parsing = AVSTREAM_PARSE_FULL;
204 if (s->ts_from_file == 2) {
205 #if !HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
206 av_log(s1, AV_LOG_ERROR, "POSIX.1-2008 not supported, nanosecond file timestamps unavailable\n");
207 return AVERROR(ENOSYS);
209 avpriv_set_pts_info(st, 64, 1, 1000000000);
210 } else if (s->ts_from_file)
211 avpriv_set_pts_info(st, 64, 1, 1);
213 avpriv_set_pts_info(st, 64, s->framerate.den, s->framerate.num);
215 if (s->width && s->height) {
216 st->codec->width = s->width;
217 st->codec->height = s->height;
221 if (s->pattern_type == PT_GLOB_SEQUENCE) {
222 s->use_glob = is_glob(s->path);
224 char *p = s->path, *q, *dup;
227 av_log(s1, AV_LOG_WARNING, "Pattern type 'glob_sequence' is deprecated: "
228 "use pattern_type 'glob' instead\n");
230 dup = q = av_strdup(p);
232 /* Do we have room for the next char and a \ insertion? */
233 if ((p - s->path) >= (sizeof(s->path) - 2))
235 if (*q == '%' && strspn(q + 1, "%*?[]{}"))
237 else if (strspn(q, "\\*?[]{}"))
244 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
246 return AVERROR(ENOENT);
249 last_index = s->globstate.gl_pathc - 1;
253 if ((s->pattern_type == PT_GLOB_SEQUENCE && !s->use_glob) || s->pattern_type == PT_SEQUENCE) {
254 if (find_image_range(&first_index, &last_index, s->path,
255 s->start_number, s->start_number_range) < 0) {
256 av_log(s1, AV_LOG_ERROR,
257 "Could find no file with path '%s' and index in the range %d-%d\n",
258 s->path, s->start_number, s->start_number + s->start_number_range - 1);
259 return AVERROR(ENOENT);
261 } else if (s->pattern_type == PT_GLOB) {
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;
272 av_log(s1, AV_LOG_ERROR,
273 "Pattern type 'glob' was selected but globbing "
274 "is not supported by this libavformat build\n");
275 return AVERROR(ENOSYS);
277 } else if (s->pattern_type != PT_GLOB_SEQUENCE) {
278 av_log(s1, AV_LOG_ERROR,
279 "Unknown value '%d' for pattern_type option\n", s->pattern_type);
280 return AVERROR(EINVAL);
282 s->img_first = first_index;
283 s->img_last = last_index;
284 s->img_number = first_index;
285 /* compute duration */
286 if (!s->ts_from_file) {
288 st->duration = last_index - first_index + 1;
292 if (s1->video_codec_id) {
293 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
294 st->codec->codec_id = s1->video_codec_id;
295 } else if (s1->audio_codec_id) {
296 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
297 st->codec->codec_id = s1->audio_codec_id;
298 } else if (s1->iformat->raw_codec_id) {
299 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
300 st->codec->codec_id = s1->iformat->raw_codec_id;
302 const char *str = strrchr(s->path, '.');
303 s->split_planes = str && !av_strcasecmp(str + 1, "y");
304 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
305 st->codec->codec_id = ff_guess_image2_codec(s->path);
306 if (st->codec->codec_id == AV_CODEC_ID_LJPEG)
307 st->codec->codec_id = AV_CODEC_ID_MJPEG;
308 if (st->codec->codec_id == AV_CODEC_ID_ALIAS_PIX) // we cannot distingiush this from BRENDER_PIX
309 st->codec->codec_id = AV_CODEC_ID_NONE;
311 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
312 pix_fmt != AV_PIX_FMT_NONE)
313 st->codec->pix_fmt = pix_fmt;
318 int ff_img_read_packet(AVFormatContext *s1, AVPacket *pkt)
320 VideoDemuxData *s = s1->priv_data;
321 char filename_bytes[1024];
322 char *filename = filename_bytes;
324 int size[3] = { 0 }, ret[3] = { 0 };
325 AVIOContext *f[3] = { NULL };
326 AVCodecContext *codec = s1->streams[0]->codec;
329 /* loop over input */
330 if (s->loop && s->img_number > s->img_last) {
331 s->img_number = s->img_first;
333 if (s->img_number > s->img_last)
337 filename = s->globstate.gl_pathv[s->img_number];
340 if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
342 s->img_number) < 0 && s->img_number > 1)
345 for (i = 0; i < 3; i++) {
346 if (avio_open2(&f[i], filename, AVIO_FLAG_READ,
347 &s1->interrupt_callback, NULL) < 0) {
350 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",
354 size[i] = avio_size(f[i]);
356 if (!s->split_planes)
358 filename[strlen(filename) - 1] = 'U' + i;
361 if (codec->codec_id == AV_CODEC_ID_NONE) {
364 uint8_t header[PROBE_BUF_MIN + AVPROBE_PADDING_SIZE];
368 ret = avio_read(f[0], header, PROBE_BUF_MIN);
371 memset(header + ret, 0, sizeof(header) - ret);
372 avio_skip(f[0], -ret);
375 pd.filename = filename;
377 ifmt = av_probe_input_format3(&pd, 1, &score);
378 if (ifmt && ifmt->read_packet == ff_img_read_packet && ifmt->raw_codec_id)
379 codec->codec_id = ifmt->raw_codec_id;
382 if (codec->codec_id == AV_CODEC_ID_RAWVIDEO && !codec->width)
383 infer_size(&codec->width, &codec->height, size[0]);
388 if (s->frame_size > 0) {
389 size[0] = s->frame_size;
395 if (av_new_packet(pkt, size[0] + size[1] + size[2]) < 0)
396 return AVERROR(ENOMEM);
397 pkt->stream_index = 0;
398 pkt->flags |= AV_PKT_FLAG_KEY;
399 if (s->ts_from_file) {
400 struct stat img_stat;
401 if (stat(filename, &img_stat))
403 pkt->pts = (int64_t)img_stat.st_mtime;
404 #if HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
405 if (s->ts_from_file == 2)
406 pkt->pts = 1000000000*pkt->pts + img_stat.st_mtim.tv_nsec;
408 av_add_index_entry(s1->streams[0], s->img_number, pkt->pts, 0, 0, AVINDEX_KEYFRAME);
409 } else if (!s->is_pipe) {
414 for (i = 0; i < 3; i++) {
416 ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
424 if (ret[0] <= 0 || ret[1] < 0 || ret[2] < 0) {
426 return AVERROR(EIO); /* signal EOF */
435 static int img_read_close(struct AVFormatContext* s1)
437 VideoDemuxData *s = s1->priv_data;
440 globfree(&s->globstate);
446 static int img_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
448 VideoDemuxData *s1 = s->priv_data;
449 AVStream *st = s->streams[0];
451 if (s1->ts_from_file) {
452 int index = av_index_search_timestamp(st, timestamp, flags);
455 s1->img_number = st->index_entries[index].pos;
459 if (timestamp < 0 || !s1->loop && timestamp > s1->img_last - s1->img_first)
461 s1->img_number = timestamp%(s1->img_last - s1->img_first + 1) + s1->img_first;
466 #define OFFSET(x) offsetof(VideoDemuxData, x)
467 #define DEC AV_OPT_FLAG_DECODING_PARAM
468 static const AVOption options[] = {
469 { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, DEC },
470 { "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, DEC },
472 { "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_GLOB_SEQUENCE}, 0, INT_MAX, DEC, "pattern_type"},
473 { "glob_sequence","select glob/sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
474 { "glob", "select glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB }, INT_MIN, INT_MAX, DEC, "pattern_type" },
475 { "sequence", "select sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_SEQUENCE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
477 { "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
478 { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
479 { "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 },
480 { "video_size", "set video size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, DEC },
481 { "frame_size", "force frame size in bytes", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
482 { "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" },
483 { "none", "none", 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, 0, 2, DEC, "ts_type" },
484 { "sec", "second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, 0, 2, DEC, "ts_type" },
485 { "ns", "nano second precision", 0, AV_OPT_TYPE_CONST, {.i64 = 2 }, 0, 2, DEC, "ts_type" },
489 #if CONFIG_IMAGE2_DEMUXER
490 static const AVClass img2_class = {
491 .class_name = "image2 demuxer",
492 .item_name = av_default_item_name,
494 .version = LIBAVUTIL_VERSION_INT,
496 AVInputFormat ff_image2_demuxer = {
498 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
499 .priv_data_size = sizeof(VideoDemuxData),
500 .read_probe = img_read_probe,
501 .read_header = ff_img_read_header,
502 .read_packet = ff_img_read_packet,
503 .read_close = img_read_close,
504 .read_seek = img_read_seek,
505 .flags = AVFMT_NOFILE,
506 .priv_class = &img2_class,
509 #if CONFIG_IMAGE2PIPE_DEMUXER
510 static const AVClass img2pipe_class = {
511 .class_name = "image2pipe demuxer",
512 .item_name = av_default_item_name,
514 .version = LIBAVUTIL_VERSION_INT,
516 AVInputFormat ff_image2pipe_demuxer = {
517 .name = "image2pipe",
518 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
519 .priv_data_size = sizeof(VideoDemuxData),
520 .read_header = ff_img_read_header,
521 .read_packet = ff_img_read_packet,
522 .priv_class = &img2pipe_class,