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
24 #include "libavutil/avstring.h"
25 #include "libavutil/log.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/pixdesc.h"
28 #include "libavutil/parseutils.h"
34 /* Locally define as 0 (bitwise-OR no-op) any missing glob options that
35 are non-posix glibc/bsd extensions. */
37 #define GLOB_NOMAGIC 0
43 #endif /* HAVE_GLOB */
45 static const int sizes[][2] = {
57 static int infer_size(int *width_ptr, int *height_ptr, int size)
61 for (i = 0; i < FF_ARRAY_ELEMS(sizes); i++) {
62 if ((sizes[i][0] * sizes[i][1]) == size) {
63 *width_ptr = sizes[i][0];
64 *height_ptr = sizes[i][1];
72 static int is_glob(const char *path)
78 while (p = strchr(p, '%')) {
83 if (span = strspn(p, "*?[]{}"))
86 /* Did we hit a glob char or get to the end? */
94 * Get index range of image files matched by path.
96 * @param pfirst_index pointer to index updated with the first number in the range
97 * @param plast_index pointer to index updated with the last number in the range
98 * @param path path which has to be matched by the image files in the range
99 * @param start_index minimum accepted value for the first index in the range
100 * @return -1 if no image file could be found
102 static int find_image_range(int *pfirst_index, int *plast_index,
103 const char *path, int start_index, int start_index_range)
106 int range, last_index, range1, first_index;
108 /* find the first image */
109 for (first_index = start_index; first_index < start_index + start_index_range; first_index++) {
110 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0) {
113 if (avio_check(buf, AVIO_FLAG_READ) > 0)
117 if (avio_check(buf, AVIO_FLAG_READ) > 0)
120 if (first_index == start_index + start_index_range)
123 /* find the last image */
124 last_index = first_index;
132 if (av_get_frame_filename(buf, sizeof(buf), path,
133 last_index + range1) < 0)
135 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
138 /* just in case... */
139 if (range >= (1 << 30))
142 /* we are sure than image last_index + range exists */
147 *pfirst_index = first_index;
148 *plast_index = last_index;
155 static int img_read_probe(AVProbeData *p)
157 if (p->filename && ff_guess_image2_codec(p->filename)) {
158 if (av_filename_number_test(p->filename))
159 return AVPROBE_SCORE_MAX;
160 else if (is_glob(p->filename))
161 return AVPROBE_SCORE_MAX;
162 else if (av_match_ext(p->filename, "raw") || av_match_ext(p->filename, "gif"))
165 return AVPROBE_SCORE_EXTENSION;
170 int ff_img_read_header(AVFormatContext *s1)
172 VideoDemuxData *s = s1->priv_data;
173 int first_index, last_index;
175 enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE;
177 s1->ctx_flags |= AVFMTCTX_NOHEADER;
179 st = avformat_new_stream(s1, NULL);
181 return AVERROR(ENOMEM);
184 if (s->pixel_format &&
185 (pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) {
186 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n",
188 return AVERROR(EINVAL);
191 av_strlcpy(s->path, s1->filename, sizeof(s->path));
196 if (s1->iformat->flags & AVFMT_NOFILE)
200 st->need_parsing = AVSTREAM_PARSE_FULL;
204 avpriv_set_pts_info(st, 64, 1, 1);
206 avpriv_set_pts_info(st, 64, s->framerate.den, s->framerate.num);
208 if (s->width && s->height) {
209 st->codec->width = s->width;
210 st->codec->height = s->height;
214 if (s->pattern_type == PT_GLOB_SEQUENCE) {
215 s->use_glob = is_glob(s->path);
217 char *p = s->path, *q, *dup;
220 av_log(s1, AV_LOG_WARNING, "Pattern type 'glob_sequence' is deprecated: "
221 "use pattern_type 'glob' instead\n");
223 dup = q = av_strdup(p);
225 /* Do we have room for the next char and a \ insertion? */
226 if ((p - s->path) >= (sizeof(s->path) - 2))
228 if (*q == '%' && strspn(q + 1, "%*?[]{}"))
230 else if (strspn(q, "\\*?[]{}"))
237 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
239 return AVERROR(ENOENT);
242 last_index = s->globstate.gl_pathc - 1;
246 if ((s->pattern_type == PT_GLOB_SEQUENCE && !s->use_glob) || s->pattern_type == PT_SEQUENCE) {
247 if (find_image_range(&first_index, &last_index, s->path,
248 s->start_number, s->start_number_range) < 0) {
249 av_log(s1, AV_LOG_ERROR,
250 "Could find no file with path '%s' and index in the range %d-%d\n",
251 s->path, s->start_number, s->start_number + s->start_number_range - 1);
252 return AVERROR(ENOENT);
254 } else if (s->pattern_type == PT_GLOB) {
257 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
259 return AVERROR(ENOENT);
262 last_index = s->globstate.gl_pathc - 1;
265 av_log(s1, AV_LOG_ERROR,
266 "Pattern type 'glob' was selected but globbing "
267 "is not supported by this libavformat build\n");
268 return AVERROR(ENOSYS);
270 } else if (s->pattern_type != PT_GLOB_SEQUENCE) {
271 av_log(s1, AV_LOG_ERROR,
272 "Unknown value '%d' for pattern_type option\n", s->pattern_type);
273 return AVERROR(EINVAL);
275 s->img_first = first_index;
276 s->img_last = last_index;
277 s->img_number = first_index;
278 /* compute duration */
279 if (!s->ts_from_file) {
281 st->duration = last_index - first_index + 1;
285 if (s1->video_codec_id) {
286 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
287 st->codec->codec_id = s1->video_codec_id;
288 } else if (s1->audio_codec_id) {
289 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
290 st->codec->codec_id = s1->audio_codec_id;
291 } else if (s1->iformat->raw_codec_id) {
292 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
293 st->codec->codec_id = s1->iformat->raw_codec_id;
295 const char *str = strrchr(s->path, '.');
296 s->split_planes = str && !av_strcasecmp(str + 1, "y");
297 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
298 st->codec->codec_id = ff_guess_image2_codec(s->path);
299 if (st->codec->codec_id == AV_CODEC_ID_LJPEG)
300 st->codec->codec_id = AV_CODEC_ID_MJPEG;
301 if (st->codec->codec_id == AV_CODEC_ID_ALIAS_PIX) // we cannot distingiush this from BRENDER_PIX
302 st->codec->codec_id = AV_CODEC_ID_NONE;
304 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
305 pix_fmt != AV_PIX_FMT_NONE)
306 st->codec->pix_fmt = pix_fmt;
311 int ff_img_read_packet(AVFormatContext *s1, AVPacket *pkt)
313 VideoDemuxData *s = s1->priv_data;
314 char filename_bytes[1024];
315 char *filename = filename_bytes;
317 int size[3] = { 0 }, ret[3] = { 0 };
318 AVIOContext *f[3] = { NULL };
319 AVCodecContext *codec = s1->streams[0]->codec;
322 /* loop over input */
323 if (s->loop && s->img_number > s->img_last) {
324 s->img_number = s->img_first;
326 if (s->img_number > s->img_last)
330 filename = s->globstate.gl_pathv[s->img_number];
333 if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
335 s->img_number) < 0 && s->img_number > 1)
338 for (i = 0; i < 3; i++) {
339 if (avio_open2(&f[i], filename, AVIO_FLAG_READ,
340 &s1->interrupt_callback, NULL) < 0) {
343 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",
347 size[i] = avio_size(f[i]);
349 if (!s->split_planes)
351 filename[strlen(filename) - 1] = 'U' + i;
354 if (codec->codec_id == AV_CODEC_ID_NONE) {
357 uint8_t header[PROBE_BUF_MIN + AVPROBE_PADDING_SIZE];
361 ret = avio_read(f[0], header, PROBE_BUF_MIN);
364 memset(header + ret, 0, sizeof(header) - ret);
365 avio_skip(f[0], -ret);
368 pd.filename = filename;
370 ifmt = av_probe_input_format3(&pd, 1, &score);
371 if (ifmt && ifmt->read_packet == ff_img_read_packet && ifmt->raw_codec_id)
372 codec->codec_id = ifmt->raw_codec_id;
375 if (codec->codec_id == AV_CODEC_ID_RAWVIDEO && !codec->width)
376 infer_size(&codec->width, &codec->height, size[0]);
381 if (s->frame_size > 0) {
382 size[0] = s->frame_size;
388 if (av_new_packet(pkt, size[0] + size[1] + size[2]) < 0)
389 return AVERROR(ENOMEM);
390 pkt->stream_index = 0;
391 pkt->flags |= AV_PKT_FLAG_KEY;
392 if (s->ts_from_file) {
393 struct stat img_stat;
394 if (stat(filename, &img_stat))
396 pkt->pts = (int64_t)img_stat.st_mtime;
397 av_add_index_entry(s1->streams[0], s->img_number, pkt->pts, 0, 0, AVINDEX_KEYFRAME);
398 } else if (!s->is_pipe) {
403 for (i = 0; i < 3; i++) {
405 ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
413 if (ret[0] <= 0 || ret[1] < 0 || ret[2] < 0) {
415 return AVERROR(EIO); /* signal EOF */
424 static int img_read_close(struct AVFormatContext* s1)
426 VideoDemuxData *s = s1->priv_data;
429 globfree(&s->globstate);
435 static int img_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
437 VideoDemuxData *s1 = s->priv_data;
438 AVStream *st = s->streams[0];
440 if (s1->ts_from_file) {
441 int index = av_index_search_timestamp(st, timestamp, flags);
444 s1->img_number = st->index_entries[index].pos;
448 if (timestamp < 0 || !s1->loop && timestamp > s1->img_last - s1->img_first)
450 s1->img_number = timestamp%(s1->img_last - s1->img_first + 1) + s1->img_first;
455 #define OFFSET(x) offsetof(VideoDemuxData, x)
456 #define DEC AV_OPT_FLAG_DECODING_PARAM
457 static const AVOption options[] = {
458 { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, DEC },
459 { "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, DEC },
461 { "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_GLOB_SEQUENCE}, 0, INT_MAX, DEC, "pattern_type"},
462 { "glob_sequence","select glob/sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
463 { "glob", "select glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB }, INT_MIN, INT_MAX, DEC, "pattern_type" },
464 { "sequence", "select sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_SEQUENCE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
466 { "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
467 { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
468 { "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 },
469 { "video_size", "set video size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, DEC },
470 { "frame_size", "force frame size in bytes", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
471 { "ts_from_file", "set frame timestamp from file's one", OFFSET(ts_from_file), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, DEC },
475 #if CONFIG_IMAGE2_DEMUXER
476 static const AVClass img2_class = {
477 .class_name = "image2 demuxer",
478 .item_name = av_default_item_name,
480 .version = LIBAVUTIL_VERSION_INT,
482 AVInputFormat ff_image2_demuxer = {
484 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
485 .priv_data_size = sizeof(VideoDemuxData),
486 .read_probe = img_read_probe,
487 .read_header = ff_img_read_header,
488 .read_packet = ff_img_read_packet,
489 .read_close = img_read_close,
490 .read_seek = img_read_seek,
491 .flags = AVFMT_NOFILE,
492 .priv_class = &img2_class,
495 #if CONFIG_IMAGE2PIPE_DEMUXER
496 static const AVClass img2pipe_class = {
497 .class_name = "image2pipe demuxer",
498 .item_name = av_default_item_name,
500 .version = LIBAVUTIL_VERSION_INT,
502 AVInputFormat ff_image2pipe_demuxer = {
503 .name = "image2pipe",
504 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
505 .priv_data_size = sizeof(VideoDemuxData),
506 .read_header = ff_img_read_header,
507 .read_packet = ff_img_read_packet,
508 .priv_class = &img2pipe_class,