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 */
46 const AVClass *class; /**< Class for private options. */
53 int split_planes; /**< use independent file for each Y, U, V plane */
55 char *pixel_format; /**< Set by a private option. */
56 int width, height; /**< Set by a private option. */
57 AVRational framerate; /**< Set by a private option. */
59 enum { PT_GLOB_SEQUENCE, PT_GLOB, PT_SEQUENCE } pattern_type;
65 int start_number_range;
70 static const int sizes[][2] = {
82 static int infer_size(int *width_ptr, int *height_ptr, int size)
86 for (i = 0; i < FF_ARRAY_ELEMS(sizes); i++) {
87 if ((sizes[i][0] * sizes[i][1]) == size) {
88 *width_ptr = sizes[i][0];
89 *height_ptr = sizes[i][1];
97 static int is_glob(const char *path)
101 const char *p = path;
103 while (p = strchr(p, '%')) {
108 if (span = strspn(p, "*?[]{}"))
111 /* Did we hit a glob char or get to the end? */
119 * Get index range of image files matched by path.
121 * @param pfirst_index pointer to index updated with the first number in the range
122 * @param plast_index pointer to index updated with the last number in the range
123 * @param path path which has to be matched by the image files in the range
124 * @param start_index minimum accepted value for the first index in the range
125 * @return -1 if no image file could be found
127 static int find_image_range(int *pfirst_index, int *plast_index,
128 const char *path, int start_index, int start_index_range)
131 int range, last_index, range1, first_index;
133 /* find the first image */
134 for (first_index = start_index; first_index < start_index + start_index_range; first_index++) {
135 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0) {
138 if (avio_check(buf, AVIO_FLAG_READ) > 0)
142 if (avio_check(buf, AVIO_FLAG_READ) > 0)
145 if (first_index == start_index + start_index_range)
148 /* find the last image */
149 last_index = first_index;
157 if (av_get_frame_filename(buf, sizeof(buf), path,
158 last_index + range1) < 0)
160 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
163 /* just in case... */
164 if (range >= (1 << 30))
167 /* we are sure than image last_index + range exists */
172 *pfirst_index = first_index;
173 *plast_index = last_index;
180 static int img_read_probe(AVProbeData *p)
182 if (p->filename && ff_guess_image2_codec(p->filename)) {
183 if (av_filename_number_test(p->filename))
184 return AVPROBE_SCORE_MAX;
185 else if (is_glob(p->filename))
186 return AVPROBE_SCORE_MAX;
187 else if (av_match_ext(p->filename, "raw") || av_match_ext(p->filename, "gif"))
190 return AVPROBE_SCORE_EXTENSION;
195 static int img_read_header(AVFormatContext *s1)
197 VideoDemuxData *s = s1->priv_data;
198 int first_index, last_index;
200 enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE;
202 s1->ctx_flags |= AVFMTCTX_NOHEADER;
204 st = avformat_new_stream(s1, NULL);
206 return AVERROR(ENOMEM);
209 if (s->pixel_format &&
210 (pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) {
211 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n",
213 return AVERROR(EINVAL);
216 av_strlcpy(s->path, s1->filename, sizeof(s->path));
221 if (s1->iformat->flags & AVFMT_NOFILE)
225 st->need_parsing = AVSTREAM_PARSE_FULL;
229 avpriv_set_pts_info(st, 64, 1, 1);
231 avpriv_set_pts_info(st, 64, s->framerate.den, s->framerate.num);
233 if (s->width && s->height) {
234 st->codec->width = s->width;
235 st->codec->height = s->height;
239 if (s->pattern_type == PT_GLOB_SEQUENCE) {
240 s->use_glob = is_glob(s->path);
242 char *p = s->path, *q, *dup;
245 av_log(s1, AV_LOG_WARNING, "Pattern type 'glob_sequence' is deprecated: "
246 "use pattern_type 'glob' instead\n");
248 dup = q = av_strdup(p);
250 /* Do we have room for the next char and a \ insertion? */
251 if ((p - s->path) >= (sizeof(s->path) - 2))
253 if (*q == '%' && strspn(q + 1, "%*?[]{}"))
255 else if (strspn(q, "\\*?[]{}"))
262 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
264 return AVERROR(ENOENT);
267 last_index = s->globstate.gl_pathc - 1;
271 if ((s->pattern_type == PT_GLOB_SEQUENCE && !s->use_glob) || s->pattern_type == PT_SEQUENCE) {
272 if (find_image_range(&first_index, &last_index, s->path,
273 s->start_number, s->start_number_range) < 0) {
274 av_log(s1, AV_LOG_ERROR,
275 "Could find no file with path '%s' and index in the range %d-%d\n",
276 s->path, s->start_number, s->start_number + s->start_number_range - 1);
277 return AVERROR(ENOENT);
279 } else if (s->pattern_type == PT_GLOB) {
282 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
284 return AVERROR(ENOENT);
287 last_index = s->globstate.gl_pathc - 1;
290 av_log(s1, AV_LOG_ERROR,
291 "Pattern type 'glob' was selected but globbing "
292 "is not supported by this libavformat build\n");
293 return AVERROR(ENOSYS);
295 } else if (s->pattern_type != PT_GLOB_SEQUENCE) {
296 av_log(s1, AV_LOG_ERROR,
297 "Unknown value '%d' for pattern_type option\n", s->pattern_type);
298 return AVERROR(EINVAL);
300 s->img_first = first_index;
301 s->img_last = last_index;
302 s->img_number = first_index;
303 /* compute duration */
304 if (!s->ts_from_file) {
306 st->duration = last_index - first_index + 1;
310 if (s1->video_codec_id) {
311 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
312 st->codec->codec_id = s1->video_codec_id;
313 } else if (s1->audio_codec_id) {
314 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
315 st->codec->codec_id = s1->audio_codec_id;
317 const char *str = strrchr(s->path, '.');
318 s->split_planes = str && !av_strcasecmp(str + 1, "y");
319 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
320 st->codec->codec_id = ff_guess_image2_codec(s->path);
321 if (st->codec->codec_id == AV_CODEC_ID_LJPEG)
322 st->codec->codec_id = AV_CODEC_ID_MJPEG;
324 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
325 pix_fmt != AV_PIX_FMT_NONE)
326 st->codec->pix_fmt = pix_fmt;
331 static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
333 VideoDemuxData *s = s1->priv_data;
334 char filename_bytes[1024];
335 char *filename = filename_bytes;
337 int size[3] = { 0 }, ret[3] = { 0 };
338 AVIOContext *f[3] = { NULL };
339 AVCodecContext *codec = s1->streams[0]->codec;
342 /* loop over input */
343 if (s->loop && s->img_number > s->img_last) {
344 s->img_number = s->img_first;
346 if (s->img_number > s->img_last)
350 filename = s->globstate.gl_pathv[s->img_number];
353 if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
355 s->img_number) < 0 && s->img_number > 1)
358 for (i = 0; i < 3; i++) {
359 if (avio_open2(&f[i], filename, AVIO_FLAG_READ,
360 &s1->interrupt_callback, NULL) < 0) {
363 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",
367 size[i] = avio_size(f[i]);
369 if (!s->split_planes)
371 filename[strlen(filename) - 1] = 'U' + i;
374 if (codec->codec_id == AV_CODEC_ID_RAWVIDEO && !codec->width)
375 infer_size(&codec->width, &codec->height, size[0]);
380 if (s->frame_size > 0) {
381 size[0] = s->frame_size;
387 if (av_new_packet(pkt, size[0] + size[1] + size[2]) < 0)
388 return AVERROR(ENOMEM);
389 pkt->stream_index = 0;
390 pkt->flags |= AV_PKT_FLAG_KEY;
391 if (s->ts_from_file) {
392 struct stat img_stat;
393 if (stat(filename, &img_stat))
395 pkt->pts = (int64_t)img_stat.st_mtime;
396 av_add_index_entry(s1->streams[0], s->img_number, pkt->pts, 0, 0, AVINDEX_KEYFRAME);
397 } else if (!s->is_pipe) {
402 for (i = 0; i < 3; i++) {
404 ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
412 if (ret[0] <= 0 || ret[1] < 0 || ret[2] < 0) {
414 return AVERROR(EIO); /* signal EOF */
423 static int img_read_close(struct AVFormatContext* s1)
425 VideoDemuxData *s = s1->priv_data;
428 globfree(&s->globstate);
434 static int img_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
436 VideoDemuxData *s1 = s->priv_data;
437 AVStream *st = s->streams[0];
439 if (s1->ts_from_file) {
440 int index = av_index_search_timestamp(st, timestamp, flags);
443 s1->img_number = st->index_entries[index].pos;
447 if (timestamp < 0 || !s1->loop && timestamp > s1->img_last - s1->img_first)
449 s1->img_number = timestamp%(s1->img_last - s1->img_first + 1) + s1->img_first;
454 #define OFFSET(x) offsetof(VideoDemuxData, x)
455 #define DEC AV_OPT_FLAG_DECODING_PARAM
456 static const AVOption options[] = {
457 { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, DEC },
458 { "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, DEC },
460 { "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_GLOB_SEQUENCE}, 0, INT_MAX, DEC, "pattern_type"},
461 { "glob_sequence","select glob/sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
462 { "glob", "select glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB }, INT_MIN, INT_MAX, DEC, "pattern_type" },
463 { "sequence", "select sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_SEQUENCE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
465 { "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
466 { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
467 { "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 },
468 { "video_size", "set video size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, DEC },
469 { "frame_size", "force frame size in bytes", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
470 { "ts_from_file", "set frame timestamp from file's one", OFFSET(ts_from_file), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, DEC },
474 #if CONFIG_IMAGE2_DEMUXER
475 static const AVClass img2_class = {
476 .class_name = "image2 demuxer",
477 .item_name = av_default_item_name,
479 .version = LIBAVUTIL_VERSION_INT,
481 AVInputFormat ff_image2_demuxer = {
483 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
484 .priv_data_size = sizeof(VideoDemuxData),
485 .read_probe = img_read_probe,
486 .read_header = img_read_header,
487 .read_packet = img_read_packet,
488 .read_close = img_read_close,
489 .read_seek = img_read_seek,
490 .flags = AVFMT_NOFILE,
491 .priv_class = &img2_class,
494 #if CONFIG_IMAGE2PIPE_DEMUXER
495 static const AVClass img2pipe_class = {
496 .class_name = "image2pipe demuxer",
497 .item_name = av_default_item_name,
499 .version = LIBAVUTIL_VERSION_INT,
501 AVInputFormat ff_image2pipe_demuxer = {
502 .name = "image2pipe",
503 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
504 .priv_data_size = sizeof(VideoDemuxData),
505 .read_header = img_read_header,
506 .read_packet = img_read_packet,
507 .priv_class = &img2pipe_class,