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;
66 static const int sizes[][2] = {
78 static int infer_size(int *width_ptr, int *height_ptr, int size)
82 for(i=0;i<FF_ARRAY_ELEMS(sizes);i++) {
83 if ((sizes[i][0] * sizes[i][1]) == size) {
84 *width_ptr = sizes[i][0];
85 *height_ptr = sizes[i][1];
92 static int is_glob(const char *path)
98 while (p = strchr(p, '%')) {
103 if (span = strspn(p, "*?[]{}"))
106 /* Did we hit a glob char or get to the end? */
114 * Get index range of image files matched by path.
116 * @param pfirst_index pointer to index updated with the first number in the range
117 * @param plast_index pointer to index updated with the last number in the range
118 * @param path path which has to be matched by the image files in the range
119 * @param start_index minimum accepted value for the first index in the range
120 * @return -1 if no image file could be found
122 static int find_image_range(int *pfirst_index, int *plast_index,
123 const char *path, int start_index, int start_index_range)
126 int range, last_index, range1, first_index;
128 /* find the first image */
129 for (first_index = start_index; first_index < start_index + start_index_range; first_index++) {
130 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
133 if (avio_check(buf, AVIO_FLAG_READ) > 0)
137 if (avio_check(buf, AVIO_FLAG_READ) > 0)
140 if (first_index == start_index + start_index_range)
143 /* find the last image */
144 last_index = first_index;
152 if (av_get_frame_filename(buf, sizeof(buf), path,
153 last_index + range1) < 0)
155 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
158 /* just in case... */
159 if (range >= (1 << 30))
162 /* we are sure than image last_index + range exists */
167 *pfirst_index = first_index;
168 *plast_index = last_index;
175 static int read_probe(AVProbeData *p)
177 if (p->filename && ff_guess_image2_codec(p->filename)) {
178 if (av_filename_number_test(p->filename))
179 return AVPROBE_SCORE_MAX;
180 else if (is_glob(p->filename))
181 return AVPROBE_SCORE_MAX;
182 else if(av_match_ext(p->filename, "raw"))
185 return AVPROBE_SCORE_MAX/2;
190 static int read_header(AVFormatContext *s1)
192 VideoDemuxData *s = s1->priv_data;
193 int first_index, last_index, ret = 0;
194 int width = 0, height = 0;
196 enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE;
197 AVRational framerate;
199 s1->ctx_flags |= AVFMTCTX_NOHEADER;
201 st = avformat_new_stream(s1, NULL);
203 return AVERROR(ENOMEM);
206 if (s->pixel_format && (pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) {
207 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n", s->pixel_format);
208 return AVERROR(EINVAL);
210 if (s->video_size && (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) {
211 av_log(s, AV_LOG_ERROR, "Could not parse video size: %s.\n", s->video_size);
214 if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) {
215 av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s->framerate);
219 av_strlcpy(s->path, s1->filename, sizeof(s->path));
224 if (s1->iformat->flags & AVFMT_NOFILE)
228 st->need_parsing = AVSTREAM_PARSE_FULL;
231 avpriv_set_pts_info(st, 60, framerate.den, framerate.num);
233 if (width && height) {
234 st->codec->width = width;
235 st->codec->height = 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 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 */
305 st->duration = last_index - first_index + 1;
308 if(s1->video_codec_id){
309 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
310 st->codec->codec_id = s1->video_codec_id;
311 }else if(s1->audio_codec_id){
312 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
313 st->codec->codec_id = s1->audio_codec_id;
315 const char *str= strrchr(s->path, '.');
316 s->split_planes = str && !av_strcasecmp(str + 1, "y");
317 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
318 st->codec->codec_id = ff_guess_image2_codec(s->path);
319 if (st->codec->codec_id == AV_CODEC_ID_LJPEG)
320 st->codec->codec_id = AV_CODEC_ID_MJPEG;
322 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pix_fmt != AV_PIX_FMT_NONE)
323 st->codec->pix_fmt = pix_fmt;
328 static int read_packet(AVFormatContext *s1, AVPacket *pkt)
330 VideoDemuxData *s = s1->priv_data;
331 char filename_bytes[1024];
332 char *filename = filename_bytes;
334 int size[3]={0}, ret[3]={0};
335 AVIOContext *f[3] = {NULL};
336 AVCodecContext *codec= s1->streams[0]->codec;
339 /* loop over input */
340 if (s->loop && s->img_number > s->img_last) {
341 s->img_number = s->img_first;
343 if (s->img_number > s->img_last)
347 filename = s->globstate.gl_pathv[s->img_number];
350 if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
351 s->path, s->img_number)<0 && s->img_number > 1)
355 if (avio_open2(&f[i], filename, AVIO_FLAG_READ,
356 &s1->interrupt_callback, NULL) < 0) {
359 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename);
362 size[i]= avio_size(f[i]);
366 filename[ strlen(filename) - 1 ]= 'U' + i;
369 if(codec->codec_id == AV_CODEC_ID_RAWVIDEO && !codec->width)
370 infer_size(&codec->width, &codec->height, size[0]);
378 if (av_new_packet(pkt, size[0] + size[1] + size[2]) < 0)
379 return AVERROR(ENOMEM);
380 pkt->stream_index = 0;
381 pkt->flags |= AV_PKT_FLAG_KEY;
386 ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]);
394 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
396 return AVERROR(EIO); /* signal EOF */
404 static int read_close(struct AVFormatContext* s1)
406 VideoDemuxData *s = s1->priv_data;
409 globfree(&s->globstate);
415 #define OFFSET(x) offsetof(VideoDemuxData, x)
416 #define DEC AV_OPT_FLAG_DECODING_PARAM
417 static const AVOption options[] = {
418 { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
419 { "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, DEC },
421 { "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_GLOB_SEQUENCE}, 0, INT_MAX, DEC, "pattern_type"},
422 { "glob_sequence","glob/sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
423 { "glob", "glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB}, INT_MIN, INT_MAX, DEC, "pattern_type" },
424 { "sequence", "glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
426 { "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
427 { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, DEC },
428 { "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 },
429 { "video_size", "set video size", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
433 #if CONFIG_IMAGE2_DEMUXER
434 static const AVClass img2_class = {
435 .class_name = "image2 demuxer",
436 .item_name = av_default_item_name,
438 .version = LIBAVUTIL_VERSION_INT,
440 AVInputFormat ff_image2_demuxer = {
442 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
443 .priv_data_size = sizeof(VideoDemuxData),
444 .read_probe = read_probe,
445 .read_header = read_header,
446 .read_packet = read_packet,
447 .read_close = read_close,
448 .flags = AVFMT_NOFILE,
449 .priv_class = &img2_class,
452 #if CONFIG_IMAGE2PIPE_DEMUXER
453 static const AVClass img2pipe_class = {
454 .class_name = "image2pipe demuxer",
455 .item_name = av_default_item_name,
457 .version = LIBAVUTIL_VERSION_INT,
459 AVInputFormat ff_image2pipe_demuxer = {
460 .name = "image2pipe",
461 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
462 .priv_data_size = sizeof(VideoDemuxData),
463 .read_header = read_header,
464 .read_packet = read_packet,
465 .priv_class = &img2pipe_class,