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
23 #include "libavutil/avstring.h"
24 #include "libavutil/log.h"
25 #include "libavutil/opt.h"
26 #include "libavutil/pixdesc.h"
27 #include "libavutil/parseutils.h"
33 /* Locally define as 0 (bitwise-OR no-op) any missing glob options that
34 are non-posix glibc/bsd extensions. */
36 #define GLOB_NOMAGIC 0
42 #endif /* HAVE_GLOB */
45 const AVClass *class; /**< Class for private options. */
52 int split_planes; /**< use independent file for each Y, U, V plane */
54 char *pixel_format; /**< Set by a private option. */
55 char *video_size; /**< Set by a private option. */
56 char *framerate; /**< Set by a private option. */
58 enum { PT_GLOB_SEQUENCE, PT_GLOB, PT_SEQUENCE } pattern_type;
64 int start_number_range;
68 static const int sizes[][2] = {
80 static int infer_size(int *width_ptr, int *height_ptr, int size)
84 for (i = 0; i < FF_ARRAY_ELEMS(sizes); i++) {
85 if ((sizes[i][0] * sizes[i][1]) == size) {
86 *width_ptr = sizes[i][0];
87 *height_ptr = sizes[i][1];
95 static int is_glob(const char *path)
101 while (p = strchr(p, '%')) {
106 if (span = strspn(p, "*?[]{}"))
109 /* Did we hit a glob char or get to the end? */
117 * Get index range of image files matched by path.
119 * @param pfirst_index pointer to index updated with the first number in the range
120 * @param plast_index pointer to index updated with the last number in the range
121 * @param path path which has to be matched by the image files in the range
122 * @param start_index minimum accepted value for the first index in the range
123 * @return -1 if no image file could be found
125 static int find_image_range(int *pfirst_index, int *plast_index,
126 const char *path, int start_index, int start_index_range)
129 int range, last_index, range1, first_index;
131 /* find the first image */
132 for (first_index = start_index; first_index < start_index + start_index_range; first_index++) {
133 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0) {
136 if (avio_check(buf, AVIO_FLAG_READ) > 0)
140 if (avio_check(buf, AVIO_FLAG_READ) > 0)
143 if (first_index == start_index + start_index_range)
146 /* find the last image */
147 last_index = first_index;
155 if (av_get_frame_filename(buf, sizeof(buf), path,
156 last_index + range1) < 0)
158 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
161 /* just in case... */
162 if (range >= (1 << 30))
165 /* we are sure than image last_index + range exists */
170 *pfirst_index = first_index;
171 *plast_index = last_index;
178 static int img_read_probe(AVProbeData *p)
180 if (p->filename && ff_guess_image2_codec(p->filename)) {
181 if (av_filename_number_test(p->filename))
182 return AVPROBE_SCORE_MAX;
183 else if (is_glob(p->filename))
184 return AVPROBE_SCORE_MAX;
185 else if (av_match_ext(p->filename, "raw") || av_match_ext(p->filename, "gif"))
188 return AVPROBE_SCORE_MAX / 2;
193 static int img_read_header(AVFormatContext *s1)
195 VideoDemuxData *s = s1->priv_data;
196 int first_index, last_index, ret = 0;
197 int width = 0, height = 0;
199 enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE;
200 AVRational framerate;
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 (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) {
217 av_log(s, AV_LOG_ERROR,
218 "Could not parse video size: %s.\n", s->video_size);
221 if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) {
222 av_log(s, AV_LOG_ERROR,
223 "Could not parse framerate: %s.\n", s->framerate);
227 av_strlcpy(s->path, s1->filename, sizeof(s->path));
232 if (s1->iformat->flags & AVFMT_NOFILE)
236 st->need_parsing = AVSTREAM_PARSE_FULL;
239 avpriv_set_pts_info(st, 60, framerate.den, framerate.num);
241 if (width && height) {
242 st->codec->width = width;
243 st->codec->height = height;
247 if (s->pattern_type == PT_GLOB_SEQUENCE) {
248 s->use_glob = is_glob(s->path);
250 char *p = s->path, *q, *dup;
253 av_log(s1, AV_LOG_WARNING, "Pattern type 'glob_sequence' is deprecated: "
254 "use pattern_type 'glob' instead\n");
256 dup = q = av_strdup(p);
258 /* Do we have room for the next char and a \ insertion? */
259 if ((p - s->path) >= (sizeof(s->path) - 2))
261 if (*q == '%' && strspn(q + 1, "%*?[]{}"))
263 else if (strspn(q, "\\*?[]{}"))
270 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
272 return AVERROR(ENOENT);
275 last_index = s->globstate.gl_pathc - 1;
279 if ((s->pattern_type == PT_GLOB_SEQUENCE && !s->use_glob) || s->pattern_type == PT_SEQUENCE) {
280 if (find_image_range(&first_index, &last_index, s->path,
281 s->start_number, s->start_number_range) < 0) {
282 av_log(s1, AV_LOG_ERROR,
283 "Could find no file with with path '%s' and index in the range %d-%d\n",
284 s->path, s->start_number, s->start_number + s->start_number_range - 1);
285 return AVERROR(ENOENT);
287 } else if (s->pattern_type == PT_GLOB) {
290 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
292 return AVERROR(ENOENT);
295 last_index = s->globstate.gl_pathc - 1;
298 av_log(s1, AV_LOG_ERROR,
299 "Pattern type 'glob' was selected but globbing "
300 "is not supported by this libavformat build\n");
301 return AVERROR(ENOSYS);
303 } else if (s->pattern_type != PT_GLOB_SEQUENCE) {
304 av_log(s1, AV_LOG_ERROR,
305 "Unknown value '%d' for pattern_type option\n", s->pattern_type);
306 return AVERROR(EINVAL);
308 s->img_first = first_index;
309 s->img_last = last_index;
310 s->img_number = first_index;
311 /* compute duration */
313 st->duration = last_index - first_index + 1;
316 if (s1->video_codec_id) {
317 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
318 st->codec->codec_id = s1->video_codec_id;
319 } else if (s1->audio_codec_id) {
320 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
321 st->codec->codec_id = s1->audio_codec_id;
323 const char *str = strrchr(s->path, '.');
324 s->split_planes = str && !av_strcasecmp(str + 1, "y");
325 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
326 st->codec->codec_id = ff_guess_image2_codec(s->path);
327 if (st->codec->codec_id == AV_CODEC_ID_LJPEG)
328 st->codec->codec_id = AV_CODEC_ID_MJPEG;
330 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
331 pix_fmt != AV_PIX_FMT_NONE)
332 st->codec->pix_fmt = pix_fmt;
337 static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
339 VideoDemuxData *s = s1->priv_data;
340 char filename_bytes[1024];
341 char *filename = filename_bytes;
343 int size[3] = { 0 }, ret[3] = { 0 };
344 AVIOContext *f[3] = { NULL };
345 AVCodecContext *codec = s1->streams[0]->codec;
348 /* loop over input */
349 if (s->loop && s->img_number > s->img_last) {
350 s->img_number = s->img_first;
352 if (s->img_number > s->img_last)
356 filename = s->globstate.gl_pathv[s->img_number];
359 if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
361 s->img_number) < 0 && s->img_number > 1)
364 for (i = 0; i < 3; i++) {
365 if (avio_open2(&f[i], filename, AVIO_FLAG_READ,
366 &s1->interrupt_callback, NULL) < 0) {
369 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",
373 size[i] = avio_size(f[i]);
375 if (!s->split_planes)
377 filename[strlen(filename) - 1] = 'U' + i;
380 if (codec->codec_id == AV_CODEC_ID_RAWVIDEO && !codec->width)
381 infer_size(&codec->width, &codec->height, size[0]);
386 if (s->frame_size > 0) {
387 size[0] = s->frame_size;
393 if (av_new_packet(pkt, size[0] + size[1] + size[2]) < 0)
394 return AVERROR(ENOMEM);
395 pkt->stream_index = 0;
396 pkt->flags |= AV_PKT_FLAG_KEY;
401 for (i = 0; i < 3; i++) {
403 ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
411 if (ret[0] <= 0 || ret[1] < 0 || ret[2] < 0) {
413 return AVERROR(EIO); /* signal EOF */
422 static int img_read_close(struct AVFormatContext* s1)
424 VideoDemuxData *s = s1->priv_data;
427 globfree(&s->globstate);
433 static int img_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
435 VideoDemuxData *s1 = s->priv_data;
437 if (timestamp < 0 || !s1->loop && timestamp > s1->img_last - s1->img_first)
439 s1->img_number = timestamp%(s1->img_last - s1->img_first + 1) + s1->img_first;
444 #define OFFSET(x) offsetof(VideoDemuxData, x)
445 #define DEC AV_OPT_FLAG_DECODING_PARAM
446 static const AVOption options[] = {
447 { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
448 { "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, DEC },
450 { "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_GLOB_SEQUENCE}, 0, INT_MAX, DEC, "pattern_type"},
451 { "glob_sequence","select glob/sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
452 { "glob", "select glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB }, INT_MIN, INT_MAX, DEC, "pattern_type" },
453 { "sequence", "select sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_SEQUENCE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
455 { "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
456 { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
457 { "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 },
458 { "video_size", "set video size", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
459 { "frame_size", "force frame size in bytes", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
463 #if CONFIG_IMAGE2_DEMUXER
464 static const AVClass img2_class = {
465 .class_name = "image2 demuxer",
466 .item_name = av_default_item_name,
468 .version = LIBAVUTIL_VERSION_INT,
470 AVInputFormat ff_image2_demuxer = {
472 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
473 .priv_data_size = sizeof(VideoDemuxData),
474 .read_probe = img_read_probe,
475 .read_header = img_read_header,
476 .read_packet = img_read_packet,
477 .read_close = img_read_close,
478 .read_seek = img_read_seek,
479 .flags = AVFMT_NOFILE,
480 .priv_class = &img2_class,
483 #if CONFIG_IMAGE2PIPE_DEMUXER
484 static const AVClass img2pipe_class = {
485 .class_name = "image2pipe demuxer",
486 .item_name = av_default_item_name,
488 .version = LIBAVUTIL_VERSION_INT,
490 AVInputFormat ff_image2pipe_demuxer = {
491 .name = "image2pipe",
492 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
493 .priv_data_size = sizeof(VideoDemuxData),
494 .read_header = img_read_header,
495 .read_packet = img_read_packet,
496 .priv_class = &img2pipe_class,