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];
94 static int is_glob(const char *path)
100 while (p = strchr(p, '%')) {
105 if (span = strspn(p, "*?[]{}"))
108 /* Did we hit a glob char or get to the end? */
116 * Get index range of image files matched by path.
118 * @param pfirst_index pointer to index updated with the first number in the range
119 * @param plast_index pointer to index updated with the last number in the range
120 * @param path path which has to be matched by the image files in the range
121 * @param start_index minimum accepted value for the first index in the range
122 * @return -1 if no image file could be found
124 static int find_image_range(int *pfirst_index, int *plast_index,
125 const char *path, int start_index, int start_index_range)
128 int range, last_index, range1, first_index;
130 /* find the first image */
131 for (first_index = start_index; first_index < start_index + start_index_range; first_index++) {
132 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0) {
135 if (avio_check(buf, AVIO_FLAG_READ) > 0)
139 if (avio_check(buf, AVIO_FLAG_READ) > 0)
142 if (first_index == start_index + start_index_range)
145 /* find the last image */
146 last_index = first_index;
154 if (av_get_frame_filename(buf, sizeof(buf), path,
155 last_index + range1) < 0)
157 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
160 /* just in case... */
161 if (range >= (1 << 30))
164 /* we are sure than image last_index + range exists */
169 *pfirst_index = first_index;
170 *plast_index = last_index;
177 static int img_read_probe(AVProbeData *p)
179 if (p->filename && ff_guess_image2_codec(p->filename)) {
180 if (av_filename_number_test(p->filename))
181 return AVPROBE_SCORE_MAX;
182 else if (is_glob(p->filename))
183 return AVPROBE_SCORE_MAX;
184 else if (av_match_ext(p->filename, "raw") || av_match_ext(p->filename, "gif"))
187 return AVPROBE_SCORE_MAX / 2;
192 static int img_read_header(AVFormatContext *s1)
194 VideoDemuxData *s = s1->priv_data;
195 int first_index, last_index, ret = 0;
196 int width = 0, height = 0;
198 enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE;
199 AVRational framerate;
201 s1->ctx_flags |= AVFMTCTX_NOHEADER;
203 st = avformat_new_stream(s1, NULL);
205 return AVERROR(ENOMEM);
208 if (s->pixel_format &&
209 (pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) {
210 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n",
212 return AVERROR(EINVAL);
215 (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) {
216 av_log(s, AV_LOG_ERROR,
217 "Could not parse video size: %s.\n", s->video_size);
220 if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) {
221 av_log(s, AV_LOG_ERROR,
222 "Could not parse framerate: %s.\n", s->framerate);
226 av_strlcpy(s->path, s1->filename, sizeof(s->path));
231 if (s1->iformat->flags & AVFMT_NOFILE)
235 st->need_parsing = AVSTREAM_PARSE_FULL;
238 avpriv_set_pts_info(st, 60, framerate.den, framerate.num);
240 if (width && height) {
241 st->codec->width = width;
242 st->codec->height = height;
246 if (s->pattern_type == PT_GLOB_SEQUENCE) {
247 s->use_glob = is_glob(s->path);
249 char *p = s->path, *q, *dup;
252 av_log(s1, AV_LOG_WARNING, "Pattern type 'glob_sequence' is deprecated: "
253 "use pattern_type 'glob' instead\n");
255 dup = q = av_strdup(p);
257 /* Do we have room for the next char and a \ insertion? */
258 if ((p - s->path) >= (sizeof(s->path) - 2))
260 if (*q == '%' && strspn(q + 1, "%*?[]{}"))
262 else if (strspn(q, "\\*?[]{}"))
269 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
271 return AVERROR(ENOENT);
274 last_index = s->globstate.gl_pathc - 1;
278 if ((s->pattern_type == PT_GLOB_SEQUENCE && !s->use_glob) || s->pattern_type == PT_SEQUENCE) {
279 if (find_image_range(&first_index, &last_index, s->path,
280 s->start_number, s->start_number_range) < 0) {
281 av_log(s1, AV_LOG_ERROR,
282 "Could find no file with with path '%s' and index in the range %d-%d\n",
283 s->path, s->start_number, s->start_number + s->start_number_range - 1);
284 return AVERROR(ENOENT);
286 } else if (s->pattern_type == PT_GLOB) {
289 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
291 return AVERROR(ENOENT);
294 last_index = s->globstate.gl_pathc - 1;
297 av_log(s1, AV_LOG_ERROR,
298 "Pattern type 'glob' was selected but globbing "
299 "is not supported by this libavformat build\n");
300 return AVERROR(ENOSYS);
302 } else if (s->pattern_type != PT_GLOB_SEQUENCE) {
303 av_log(s1, AV_LOG_ERROR,
304 "Unknown value '%d' for pattern_type option\n", s->pattern_type);
305 return AVERROR(EINVAL);
307 s->img_first = first_index;
308 s->img_last = last_index;
309 s->img_number = first_index;
310 /* compute duration */
312 st->duration = last_index - first_index + 1;
315 if (s1->video_codec_id) {
316 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
317 st->codec->codec_id = s1->video_codec_id;
318 } else if (s1->audio_codec_id) {
319 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
320 st->codec->codec_id = s1->audio_codec_id;
322 const char *str = strrchr(s->path, '.');
323 s->split_planes = str && !av_strcasecmp(str + 1, "y");
324 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
325 st->codec->codec_id = ff_guess_image2_codec(s->path);
326 if (st->codec->codec_id == AV_CODEC_ID_LJPEG)
327 st->codec->codec_id = AV_CODEC_ID_MJPEG;
329 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
330 pix_fmt != AV_PIX_FMT_NONE)
331 st->codec->pix_fmt = pix_fmt;
336 static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
338 VideoDemuxData *s = s1->priv_data;
339 char filename_bytes[1024];
340 char *filename = filename_bytes;
342 int size[3] = { 0 }, ret[3] = { 0 };
343 AVIOContext *f[3] = { NULL };
344 AVCodecContext *codec = s1->streams[0]->codec;
347 /* loop over input */
348 if (s->loop && s->img_number > s->img_last) {
349 s->img_number = s->img_first;
351 if (s->img_number > s->img_last)
355 filename = s->globstate.gl_pathv[s->img_number];
358 if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
360 s->img_number) < 0 && s->img_number > 1)
363 for (i = 0; i < 3; i++) {
364 if (avio_open2(&f[i], filename, AVIO_FLAG_READ,
365 &s1->interrupt_callback, NULL) < 0) {
368 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",
372 size[i] = avio_size(f[i]);
374 if (!s->split_planes)
376 filename[strlen(filename) - 1] = 'U' + i;
379 if (codec->codec_id == AV_CODEC_ID_RAWVIDEO && !codec->width)
380 infer_size(&codec->width, &codec->height, size[0]);
385 if (s->frame_size > 0) {
386 size[0] = s->frame_size;
392 if (av_new_packet(pkt, size[0] + size[1] + size[2]) < 0)
393 return AVERROR(ENOMEM);
394 pkt->stream_index = 0;
395 pkt->flags |= AV_PKT_FLAG_KEY;
398 for (i = 0; i < 3; i++) {
400 ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
408 if (ret[0] <= 0 || ret[1] < 0 || ret[2] < 0) {
410 return AVERROR(EIO); /* signal EOF */
418 static int img_read_close(struct AVFormatContext* s1)
420 VideoDemuxData *s = s1->priv_data;
423 globfree(&s->globstate);
429 #define OFFSET(x) offsetof(VideoDemuxData, x)
430 #define DEC AV_OPT_FLAG_DECODING_PARAM
431 static const AVOption options[] = {
432 { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
433 { "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, DEC },
435 { "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_GLOB_SEQUENCE}, 0, INT_MAX, DEC, "pattern_type"},
436 { "glob_sequence","glob/sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
437 { "glob", "glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB }, INT_MIN, INT_MAX, DEC, "pattern_type" },
438 { "sequence", "glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_SEQUENCE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
440 { "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
441 { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
442 { "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 },
443 { "video_size", "set video size", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
444 { "frame_size", "force frame size in bytes", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
448 #if CONFIG_IMAGE2_DEMUXER
449 static const AVClass img2_class = {
450 .class_name = "image2 demuxer",
451 .item_name = av_default_item_name,
453 .version = LIBAVUTIL_VERSION_INT,
455 AVInputFormat ff_image2_demuxer = {
457 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
458 .priv_data_size = sizeof(VideoDemuxData),
459 .read_probe = img_read_probe,
460 .read_header = img_read_header,
461 .read_packet = img_read_packet,
462 .read_close = img_read_close,
463 .flags = AVFMT_NOFILE,
464 .priv_class = &img2_class,
467 #if CONFIG_IMAGE2PIPE_DEMUXER
468 static const AVClass img2pipe_class = {
469 .class_name = "image2pipe demuxer",
470 .item_name = av_default_item_name,
472 .version = LIBAVUTIL_VERSION_INT,
474 AVInputFormat ff_image2pipe_demuxer = {
475 .name = "image2pipe",
476 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
477 .priv_data_size = sizeof(VideoDemuxData),
478 .read_header = img_read_header,
479 .read_packet = img_read_packet,
480 .priv_class = &img2pipe_class,