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. */
51 int split_planes; /**< use independent file for each Y, U, V plane */
53 char *pixel_format; /**< Set by a private option. */
54 char *video_size; /**< Set by a private option. */
55 char *framerate; /**< Set by a private option. */
57 enum { PT_GLOB_SEQUENCE, PT_GLOB, PT_SEQUENCE } pattern_type;
63 int start_number_range;
67 static const int sizes[][2] = {
79 static int infer_size(int *width_ptr, int *height_ptr, int size)
83 for(i=0;i<FF_ARRAY_ELEMS(sizes);i++) {
84 if ((sizes[i][0] * sizes[i][1]) == size) {
85 *width_ptr = sizes[i][0];
86 *height_ptr = sizes[i][1];
93 static int is_glob(const char *path)
99 while (p = strchr(p, '%')) {
104 if (span = strspn(p, "*?[]{}"))
107 /* Did we hit a glob char or get to the end? */
115 * Get index range of image files matched by path.
117 * @param pfirst_index pointer to index updated with the first number in the range
118 * @param plast_index pointer to index updated with the last number in the range
119 * @param path path which has to be matched by the image files in the range
120 * @param start_index minimum accepted value for the first index in the range
121 * @return -1 if no image file could be found
123 static int find_image_range(int *pfirst_index, int *plast_index,
124 const char *path, int start_index, int start_index_range)
127 int range, last_index, range1, first_index;
129 /* find the first image */
130 for (first_index = start_index; first_index < start_index + start_index_range; first_index++) {
131 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
134 if (avio_check(buf, AVIO_FLAG_READ) > 0)
138 if (avio_check(buf, AVIO_FLAG_READ) > 0)
141 if (first_index == start_index + start_index_range)
144 /* find the last image */
145 last_index = first_index;
153 if (av_get_frame_filename(buf, sizeof(buf), path,
154 last_index + range1) < 0)
156 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
159 /* just in case... */
160 if (range >= (1 << 30))
163 /* we are sure than image last_index + range exists */
168 *pfirst_index = first_index;
169 *plast_index = last_index;
176 static int read_probe(AVProbeData *p)
178 if (p->filename && ff_guess_image2_codec(p->filename)) {
179 if (av_filename_number_test(p->filename))
180 return AVPROBE_SCORE_MAX;
181 else if (is_glob(p->filename))
182 return AVPROBE_SCORE_MAX;
183 else if(av_match_ext(p->filename, "raw"))
186 return AVPROBE_SCORE_MAX/2;
191 static int read_header(AVFormatContext *s1)
193 VideoDemuxData *s = s1->priv_data;
194 int first_index, last_index, ret = 0;
195 int width = 0, height = 0;
197 enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE;
198 AVRational framerate;
200 s1->ctx_flags |= AVFMTCTX_NOHEADER;
202 st = avformat_new_stream(s1, NULL);
204 return AVERROR(ENOMEM);
207 if (s->pixel_format && (pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) {
208 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n", s->pixel_format);
209 return AVERROR(EINVAL);
211 if (s->video_size && (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) {
212 av_log(s, AV_LOG_ERROR, "Could not parse video size: %s.\n", s->video_size);
215 if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) {
216 av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s->framerate);
220 av_strlcpy(s->path, s1->filename, sizeof(s->path));
225 if (s1->iformat->flags & AVFMT_NOFILE)
229 st->need_parsing = AVSTREAM_PARSE_FULL;
232 avpriv_set_pts_info(st, 60, framerate.den, framerate.num);
234 if (width && height) {
235 st->codec->width = width;
236 st->codec->height = height;
240 if (s->pattern_type == PT_GLOB_SEQUENCE) {
241 s->use_glob = is_glob(s->path);
243 char *p = s->path, *q, *dup;
246 av_log(s1, AV_LOG_WARNING, "Pattern type 'glob_sequence' is deprecated: "
247 "use pattern_type 'glob' instead\n");
249 dup = q = av_strdup(p);
251 /* Do we have room for the next char and a \ insertion? */
252 if ((p - s->path) >= (sizeof(s->path) - 2))
254 if (*q == '%' && strspn(q + 1, "%*?[]{}"))
256 else if (strspn(q, "\\*?[]{}"))
263 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
265 return AVERROR(ENOENT);
268 last_index = s->globstate.gl_pathc - 1;
272 if ((s->pattern_type == PT_GLOB_SEQUENCE && !s->use_glob) || s->pattern_type == PT_SEQUENCE) {
273 if (find_image_range(&first_index, &last_index, s->path,
274 s->start_number, s->start_number_range) < 0) {
275 av_log(s1, AV_LOG_ERROR,
276 "Could find no file with with path '%s' and index in the range %d-%d\n",
277 s->path, s->start_number, s->start_number + s->start_number_range - 1);
278 return AVERROR(ENOENT);
280 } else if (s->pattern_type == PT_GLOB) {
283 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
285 return AVERROR(ENOENT);
288 last_index = s->globstate.gl_pathc - 1;
291 av_log(s1, AV_LOG_ERROR,
292 "Pattern type 'glob' was selected but globbing "
293 "is not supported by this libavformat build\n");
294 return AVERROR(ENOSYS);
296 } else if (s->pattern_type != PT_GLOB_SEQUENCE) {
297 av_log(s1, AV_LOG_ERROR,
298 "Unknown value '%d' for pattern_type option\n", s->pattern_type);
299 return AVERROR(EINVAL);
301 s->img_first = first_index;
302 s->img_last = last_index;
303 s->img_number = first_index;
304 /* compute duration */
306 st->duration = last_index - first_index + 1;
309 if(s1->video_codec_id){
310 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
311 st->codec->codec_id = s1->video_codec_id;
312 }else if(s1->audio_codec_id){
313 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
314 st->codec->codec_id = s1->audio_codec_id;
316 const char *str= strrchr(s->path, '.');
317 s->split_planes = str && !av_strcasecmp(str + 1, "y");
318 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
319 st->codec->codec_id = ff_guess_image2_codec(s->path);
320 if (st->codec->codec_id == AV_CODEC_ID_LJPEG)
321 st->codec->codec_id = AV_CODEC_ID_MJPEG;
323 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pix_fmt != AV_PIX_FMT_NONE)
324 st->codec->pix_fmt = pix_fmt;
329 static int read_packet(AVFormatContext *s1, AVPacket *pkt)
331 VideoDemuxData *s = s1->priv_data;
332 char filename_bytes[1024];
333 char *filename = filename_bytes;
335 int size[3]={0}, ret[3]={0};
336 AVIOContext *f[3] = {NULL};
337 AVCodecContext *codec= s1->streams[0]->codec;
340 /* loop over input */
341 if (s->loop && s->img_number > s->img_last) {
342 s->img_number = s->img_first;
344 if (s->img_number > s->img_last)
348 filename = s->globstate.gl_pathv[s->img_number];
351 if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
352 s->path, s->img_number)<0 && s->img_number > 1)
356 if (avio_open2(&f[i], filename, AVIO_FLAG_READ,
357 &s1->interrupt_callback, NULL) < 0) {
360 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename);
363 size[i]= avio_size(f[i]);
367 filename[ strlen(filename) - 1 ]= 'U' + i;
370 if(codec->codec_id == AV_CODEC_ID_RAWVIDEO && !codec->width)
371 infer_size(&codec->width, &codec->height, size[0]);
376 if (s->frame_size > 0) {
377 size[0] = s->frame_size;
383 if (av_new_packet(pkt, size[0] + size[1] + size[2]) < 0)
384 return AVERROR(ENOMEM);
385 pkt->stream_index = 0;
386 pkt->flags |= AV_PKT_FLAG_KEY;
391 ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]);
399 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
401 return AVERROR(EIO); /* signal EOF */
409 static int read_close(struct AVFormatContext* s1)
411 VideoDemuxData *s = s1->priv_data;
414 globfree(&s->globstate);
420 #define OFFSET(x) offsetof(VideoDemuxData, x)
421 #define DEC AV_OPT_FLAG_DECODING_PARAM
422 static const AVOption options[] = {
423 { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
424 { "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, DEC },
426 { "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_GLOB_SEQUENCE}, 0, INT_MAX, DEC, "pattern_type"},
427 { "glob_sequence","glob/sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
428 { "glob", "glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB}, INT_MIN, INT_MAX, DEC, "pattern_type" },
429 { "sequence", "glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
431 { "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
432 { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, DEC },
433 { "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 },
434 { "video_size", "set video size", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
435 { "frame_size", "force frame size in bytes", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, DEC },
439 #if CONFIG_IMAGE2_DEMUXER
440 static const AVClass img2_class = {
441 .class_name = "image2 demuxer",
442 .item_name = av_default_item_name,
444 .version = LIBAVUTIL_VERSION_INT,
446 AVInputFormat ff_image2_demuxer = {
448 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
449 .priv_data_size = sizeof(VideoDemuxData),
450 .read_probe = read_probe,
451 .read_header = read_header,
452 .read_packet = read_packet,
453 .read_close = read_close,
454 .flags = AVFMT_NOFILE,
455 .priv_class = &img2_class,
458 #if CONFIG_IMAGE2PIPE_DEMUXER
459 static const AVClass img2pipe_class = {
460 .class_name = "image2pipe demuxer",
461 .item_name = av_default_item_name,
463 .version = LIBAVUTIL_VERSION_INT,
465 AVInputFormat ff_image2pipe_demuxer = {
466 .name = "image2pipe",
467 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
468 .priv_data_size = sizeof(VideoDemuxData),
469 .read_header = read_header,
470 .read_packet = read_packet,
471 .priv_class = &img2pipe_class,