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;
183 return AVPROBE_SCORE_MAX/2;
188 static int read_header(AVFormatContext *s1)
190 VideoDemuxData *s = s1->priv_data;
191 int first_index, last_index, ret = 0;
192 int width = 0, height = 0;
194 enum PixelFormat pix_fmt = PIX_FMT_NONE;
195 AVRational framerate;
197 s1->ctx_flags |= AVFMTCTX_NOHEADER;
199 st = avformat_new_stream(s1, NULL);
201 return AVERROR(ENOMEM);
204 if (s->pixel_format && (pix_fmt = av_get_pix_fmt(s->pixel_format)) == PIX_FMT_NONE) {
205 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n", s->pixel_format);
206 return AVERROR(EINVAL);
208 if (s->video_size && (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) {
209 av_log(s, AV_LOG_ERROR, "Could not parse video size: %s.\n", s->video_size);
212 if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) {
213 av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s->framerate);
217 av_strlcpy(s->path, s1->filename, sizeof(s->path));
222 if (s1->iformat->flags & AVFMT_NOFILE)
226 st->need_parsing = AVSTREAM_PARSE_FULL;
229 avpriv_set_pts_info(st, 60, framerate.den, framerate.num);
231 if (width && height) {
232 st->codec->width = width;
233 st->codec->height = height;
237 if (s->pattern_type == PT_GLOB_SEQUENCE) {
238 s->use_glob = is_glob(s->path);
240 char *p = s->path, *q, *dup;
243 av_log(s1, AV_LOG_WARNING, "Pattern type 'glob_sequence' is deprecated: "
244 "use pattern_type 'glob' instead\n");
246 dup = q = av_strdup(p);
248 /* Do we have room for the next char and a \ insertion? */
249 if ((p - s->path) >= (sizeof(s->path) - 2))
251 if (*q == '%' && strspn(q + 1, "%*?[]{}"))
253 else if (strspn(q, "\\*?[]{}"))
260 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
262 return AVERROR(ENOENT);
265 last_index = s->globstate.gl_pathc - 1;
269 if ((s->pattern_type == PT_GLOB_SEQUENCE && !s->use_glob) || s->pattern_type == PT_SEQUENCE) {
270 if (find_image_range(&first_index, &last_index, s->path,
271 s->start_number, s->start_number_range) < 0) {
272 av_log(s1, AV_LOG_ERROR,
273 "Could find no file with with path '%s' and index in the range %d-%d\n",
274 s->path, s->start_number, s->start_number + s->start_number_range - 1);
275 return AVERROR(ENOENT);
277 } else if (s->pattern_type == PT_GLOB) {
280 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
282 return AVERROR(ENOENT);
285 last_index = s->globstate.gl_pathc - 1;
288 av_log(s1, AV_LOG_ERROR,
289 "Pattern type 'glob' was selected but globbing "
290 "is not supported by this libavformat build\n");
291 return AVERROR(ENOSYS);
293 } else if (s->pattern_type != PT_GLOB_SEQUENCE) {
294 av_log(s1, AV_LOG_ERROR,
295 "Unknown value '%d' for pattern_type option\n", s->pattern_type);
296 return AVERROR(EINVAL);
298 s->img_first = first_index;
299 s->img_last = last_index;
300 s->img_number = first_index;
301 /* compute duration */
303 st->duration = last_index - first_index + 1;
306 if(s1->video_codec_id){
307 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
308 st->codec->codec_id = s1->video_codec_id;
309 }else if(s1->audio_codec_id){
310 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
311 st->codec->codec_id = s1->audio_codec_id;
313 const char *str= strrchr(s->path, '.');
314 s->split_planes = str && !av_strcasecmp(str + 1, "y");
315 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
316 st->codec->codec_id = ff_guess_image2_codec(s->path);
317 if (st->codec->codec_id == AV_CODEC_ID_LJPEG)
318 st->codec->codec_id = AV_CODEC_ID_MJPEG;
320 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pix_fmt != PIX_FMT_NONE)
321 st->codec->pix_fmt = pix_fmt;
326 static int read_packet(AVFormatContext *s1, AVPacket *pkt)
328 VideoDemuxData *s = s1->priv_data;
329 char filename_bytes[1024];
330 char *filename = filename_bytes;
332 int size[3]={0}, ret[3]={0};
333 AVIOContext *f[3] = {NULL};
334 AVCodecContext *codec= s1->streams[0]->codec;
337 /* loop over input */
338 if (s->loop && s->img_number > s->img_last) {
339 s->img_number = s->img_first;
341 if (s->img_number > s->img_last)
345 filename = s->globstate.gl_pathv[s->img_number];
348 if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
349 s->path, s->img_number)<0 && s->img_number > 1)
353 if (avio_open2(&f[i], filename, AVIO_FLAG_READ,
354 &s1->interrupt_callback, NULL) < 0) {
357 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename);
360 size[i]= avio_size(f[i]);
364 filename[ strlen(filename) - 1 ]= 'U' + i;
367 if(codec->codec_id == AV_CODEC_ID_RAWVIDEO && !codec->width)
368 infer_size(&codec->width, &codec->height, size[0]);
376 av_new_packet(pkt, size[0] + size[1] + size[2]);
377 pkt->stream_index = 0;
378 pkt->flags |= AV_PKT_FLAG_KEY;
383 ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]);
391 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
393 return AVERROR(EIO); /* signal EOF */
401 static int read_close(struct AVFormatContext* s1)
403 VideoDemuxData *s = s1->priv_data;
406 globfree(&s->globstate);
412 #define OFFSET(x) offsetof(VideoDemuxData, x)
413 #define DEC AV_OPT_FLAG_DECODING_PARAM
414 static const AVOption options[] = {
415 { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
416 { "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, DEC },
418 { "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_GLOB_SEQUENCE}, 0, INT_MAX, DEC, "pattern_type"},
419 { "glob_sequence","glob/sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
420 { "glob", "glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB}, INT_MIN, INT_MAX, DEC, "pattern_type" },
421 { "sequence", "glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
423 { "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
424 { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, DEC },
425 { "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 },
426 { "video_size", "set video size", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
430 #if CONFIG_IMAGE2_DEMUXER
431 static const AVClass img2_class = {
432 .class_name = "image2 demuxer",
433 .item_name = av_default_item_name,
435 .version = LIBAVUTIL_VERSION_INT,
437 AVInputFormat ff_image2_demuxer = {
439 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
440 .priv_data_size = sizeof(VideoDemuxData),
441 .read_probe = read_probe,
442 .read_header = read_header,
443 .read_packet = read_packet,
444 .read_close = read_close,
445 .flags = AVFMT_NOFILE,
446 .priv_class = &img2_class,
449 #if CONFIG_IMAGE2PIPE_DEMUXER
450 static const AVClass img2pipe_class = {
451 .class_name = "image2pipe demuxer",
452 .item_name = av_default_item_name,
454 .version = LIBAVUTIL_VERSION_INT,
456 AVInputFormat ff_image2pipe_demuxer = {
457 .name = "image2pipe",
458 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
459 .priv_data_size = sizeof(VideoDemuxData),
460 .read_header = read_header,
461 .read_packet = read_packet,
462 .priv_class = &img2pipe_class,