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. */
64 static const int sizes[][2] = {
76 static int infer_size(int *width_ptr, int *height_ptr, int size)
80 for(i=0;i<FF_ARRAY_ELEMS(sizes);i++) {
81 if ((sizes[i][0] * sizes[i][1]) == size) {
82 *width_ptr = sizes[i][0];
83 *height_ptr = sizes[i][1];
90 static int is_glob(const char *path)
96 while (p = strchr(p, '%')) {
101 if (span = strspn(p, "*?[]{}"))
104 /* Did we hit a glob char or get to the end? */
112 * Get index range of image files matched by path.
114 * @param pfirst_index pointer to index updated with the first number in the range
115 * @param plast_index pointer to index updated with the last number in the range
116 * @param path path which has to be matched by the image files in the range
117 * @param start_index minimum accepted value for the first index in the range
118 * @return -1 if no image file could be found
120 static int find_image_range(int *pfirst_index, int *plast_index,
121 const char *path, int start_index)
124 int range, last_index, range1, first_index;
126 /* find the first image */
127 for (first_index = start_index; first_index < start_index + 5; first_index++) {
128 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
131 if (avio_check(buf, AVIO_FLAG_READ) > 0)
135 if (avio_check(buf, AVIO_FLAG_READ) > 0)
138 if (first_index == start_index + 5)
141 /* find the last image */
142 last_index = first_index;
150 if (av_get_frame_filename(buf, sizeof(buf), path,
151 last_index + range1) < 0)
153 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
156 /* just in case... */
157 if (range >= (1 << 30))
160 /* we are sure than image last_index + range exists */
165 *pfirst_index = first_index;
166 *plast_index = last_index;
173 static int read_probe(AVProbeData *p)
175 if (p->filename && ff_guess_image2_codec(p->filename)) {
176 if (av_filename_number_test(p->filename))
177 return AVPROBE_SCORE_MAX;
178 else if (is_glob(p->filename))
179 return AVPROBE_SCORE_MAX;
181 return AVPROBE_SCORE_MAX/2;
186 static int read_header(AVFormatContext *s1)
188 VideoDemuxData *s = s1->priv_data;
189 int first_index, last_index, ret = 0;
190 int width = 0, height = 0;
192 enum PixelFormat pix_fmt = PIX_FMT_NONE;
193 AVRational framerate;
195 s1->ctx_flags |= AVFMTCTX_NOHEADER;
197 st = avformat_new_stream(s1, NULL);
199 return AVERROR(ENOMEM);
202 if (s->pixel_format && (pix_fmt = av_get_pix_fmt(s->pixel_format)) == PIX_FMT_NONE) {
203 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n", s->pixel_format);
204 return AVERROR(EINVAL);
206 if (s->video_size && (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) {
207 av_log(s, AV_LOG_ERROR, "Could not parse video size: %s.\n", s->video_size);
210 if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) {
211 av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s->framerate);
215 av_strlcpy(s->path, s1->filename, sizeof(s->path));
220 if (s1->iformat->flags & AVFMT_NOFILE)
224 st->need_parsing = AVSTREAM_PARSE_FULL;
227 avpriv_set_pts_info(st, 60, framerate.den, framerate.num);
229 if (width && height) {
230 st->codec->width = width;
231 st->codec->height = height;
235 s->use_glob = is_glob(s->path);
238 char *p = s->path, *q, *dup;
241 dup = q = av_strdup(p);
243 /* Do we have room for the next char and a \ insertion? */
244 if ((p - s->path) >= (sizeof(s->path) - 2))
246 if (*q == '%' && strspn(q + 1, "%*?[]{}"))
248 else if (strspn(q, "\\*?[]{}"))
255 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
257 return AVERROR(ENOENT);
260 last_index = s->globstate.gl_pathc - 1;
263 if (find_image_range(&first_index, &last_index, s->path,
264 s->start_number) < 0)
265 return AVERROR(ENOENT);
267 s->img_first = first_index;
268 s->img_last = last_index;
269 s->img_number = first_index;
270 /* compute duration */
272 st->duration = last_index - first_index + 1;
275 if(s1->video_codec_id){
276 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
277 st->codec->codec_id = s1->video_codec_id;
278 }else if(s1->audio_codec_id){
279 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
280 st->codec->codec_id = s1->audio_codec_id;
282 const char *str= strrchr(s->path, '.');
283 s->split_planes = str && !av_strcasecmp(str + 1, "y");
284 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
285 st->codec->codec_id = ff_guess_image2_codec(s->path);
286 if (st->codec->codec_id == CODEC_ID_LJPEG)
287 st->codec->codec_id = CODEC_ID_MJPEG;
289 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pix_fmt != PIX_FMT_NONE)
290 st->codec->pix_fmt = pix_fmt;
295 static int read_packet(AVFormatContext *s1, AVPacket *pkt)
297 VideoDemuxData *s = s1->priv_data;
298 char filename_bytes[1024];
299 char *filename = filename_bytes;
301 int size[3]={0}, ret[3]={0};
303 AVCodecContext *codec= s1->streams[0]->codec;
306 /* loop over input */
307 if (s->loop && s->img_number > s->img_last) {
308 s->img_number = s->img_first;
310 if (s->img_number > s->img_last)
314 filename = s->globstate.gl_pathv[s->img_number];
317 if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
318 s->path, s->img_number)<0 && s->img_number > 1)
322 if (avio_open2(&f[i], filename, AVIO_FLAG_READ,
323 &s1->interrupt_callback, NULL) < 0) {
326 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename);
329 size[i]= avio_size(f[i]);
333 filename[ strlen(filename) - 1 ]= 'U' + i;
336 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
337 infer_size(&codec->width, &codec->height, size[0]);
345 av_new_packet(pkt, size[0] + size[1] + size[2]);
346 pkt->stream_index = 0;
347 pkt->flags |= AV_PKT_FLAG_KEY;
352 ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]);
360 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
362 return AVERROR(EIO); /* signal EOF */
370 static int read_close(struct AVFormatContext* s1)
372 VideoDemuxData *s = s1->priv_data;
375 globfree(&s->globstate);
381 #define OFFSET(x) offsetof(VideoDemuxData, x)
382 #define DEC AV_OPT_FLAG_DECODING_PARAM
383 static const AVOption options[] = {
384 { "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
385 { "video_size", "", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
386 { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
387 { "loop", "", OFFSET(loop), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 1, DEC },
388 { "start_number", "first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, DEC },
392 #if CONFIG_IMAGE2_DEMUXER
393 static const AVClass img2_class = {
394 .class_name = "image2 demuxer",
395 .item_name = av_default_item_name,
397 .version = LIBAVUTIL_VERSION_INT,
399 AVInputFormat ff_image2_demuxer = {
401 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
402 .priv_data_size = sizeof(VideoDemuxData),
403 .read_probe = read_probe,
404 .read_header = read_header,
405 .read_packet = read_packet,
406 .read_close = read_close,
407 .flags = AVFMT_NOFILE,
408 .priv_class = &img2_class,
411 #if CONFIG_IMAGE2PIPE_DEMUXER
412 static const AVClass img2pipe_class = {
413 .class_name = "image2pipe demuxer",
414 .item_name = av_default_item_name,
416 .version = LIBAVUTIL_VERSION_INT,
418 AVInputFormat ff_image2pipe_demuxer = {
419 .name = "image2pipe",
420 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
421 .priv_data_size = sizeof(VideoDemuxData),
422 .read_header = read_header,
423 .read_packet = read_packet,
424 .priv_class = &img2pipe_class,