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. */
52 int split_planes; /**< use independent file for each Y, U, V plane */
54 char *pixel_format; /**< Set by a private option. */
55 int width, height; /**< Set by a private option. */
56 AVRational framerate; /**< Set by a private option. */
58 enum { PT_GLOB_SEQUENCE, PT_GLOB, PT_SEQUENCE } pattern_type;
64 int start_number_range;
68 static const int sizes[][2] = {
80 static int infer_size(int *width_ptr, int *height_ptr, int size)
84 for (i = 0; i < FF_ARRAY_ELEMS(sizes); i++) {
85 if ((sizes[i][0] * sizes[i][1]) == size) {
86 *width_ptr = sizes[i][0];
87 *height_ptr = sizes[i][1];
95 static int is_glob(const char *path)
101 while (p = strchr(p, '%')) {
106 if (span = strspn(p, "*?[]{}"))
109 /* Did we hit a glob char or get to the end? */
117 * Get index range of image files matched by path.
119 * @param pfirst_index pointer to index updated with the first number in the range
120 * @param plast_index pointer to index updated with the last number in the range
121 * @param path path which has to be matched by the image files in the range
122 * @param start_index minimum accepted value for the first index in the range
123 * @return -1 if no image file could be found
125 static int find_image_range(int *pfirst_index, int *plast_index,
126 const char *path, int start_index, int start_index_range)
129 int range, last_index, range1, first_index;
131 /* find the first image */
132 for (first_index = start_index; first_index < start_index + start_index_range; first_index++) {
133 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0) {
136 if (avio_check(buf, AVIO_FLAG_READ) > 0)
140 if (avio_check(buf, AVIO_FLAG_READ) > 0)
143 if (first_index == start_index + start_index_range)
146 /* find the last image */
147 last_index = first_index;
155 if (av_get_frame_filename(buf, sizeof(buf), path,
156 last_index + range1) < 0)
158 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
161 /* just in case... */
162 if (range >= (1 << 30))
165 /* we are sure than image last_index + range exists */
170 *pfirst_index = first_index;
171 *plast_index = last_index;
178 static int img_read_probe(AVProbeData *p)
180 if (p->filename && ff_guess_image2_codec(p->filename)) {
181 if (av_filename_number_test(p->filename))
182 return AVPROBE_SCORE_MAX;
183 else if (is_glob(p->filename))
184 return AVPROBE_SCORE_MAX;
185 else if (av_match_ext(p->filename, "raw") || av_match_ext(p->filename, "gif"))
188 return AVPROBE_SCORE_MAX / 2;
193 static int img_read_header(AVFormatContext *s1)
195 VideoDemuxData *s = s1->priv_data;
196 int first_index, last_index;
198 enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE;
200 s1->ctx_flags |= AVFMTCTX_NOHEADER;
202 st = avformat_new_stream(s1, NULL);
204 return AVERROR(ENOMEM);
207 if (s->pixel_format &&
208 (pix_fmt = av_get_pix_fmt(s->pixel_format)) == AV_PIX_FMT_NONE) {
209 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n",
211 return AVERROR(EINVAL);
214 av_strlcpy(s->path, s1->filename, sizeof(s->path));
219 if (s1->iformat->flags & AVFMT_NOFILE)
223 st->need_parsing = AVSTREAM_PARSE_FULL;
226 avpriv_set_pts_info(st, 60, s->framerate.den, s->framerate.num);
228 if (s->width && s->height) {
229 st->codec->width = s->width;
230 st->codec->height = s->height;
234 if (s->pattern_type == PT_GLOB_SEQUENCE) {
235 s->use_glob = is_glob(s->path);
237 char *p = s->path, *q, *dup;
240 av_log(s1, AV_LOG_WARNING, "Pattern type 'glob_sequence' is deprecated: "
241 "use pattern_type 'glob' instead\n");
243 dup = q = av_strdup(p);
245 /* Do we have room for the next char and a \ insertion? */
246 if ((p - s->path) >= (sizeof(s->path) - 2))
248 if (*q == '%' && strspn(q + 1, "%*?[]{}"))
250 else if (strspn(q, "\\*?[]{}"))
257 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
259 return AVERROR(ENOENT);
262 last_index = s->globstate.gl_pathc - 1;
266 if ((s->pattern_type == PT_GLOB_SEQUENCE && !s->use_glob) || s->pattern_type == PT_SEQUENCE) {
267 if (find_image_range(&first_index, &last_index, s->path,
268 s->start_number, s->start_number_range) < 0) {
269 av_log(s1, AV_LOG_ERROR,
270 "Could find no file with with path '%s' and index in the range %d-%d\n",
271 s->path, s->start_number, s->start_number + s->start_number_range - 1);
272 return AVERROR(ENOENT);
274 } else if (s->pattern_type == PT_GLOB) {
277 gerr = glob(s->path, GLOB_NOCHECK|GLOB_BRACE|GLOB_NOMAGIC, NULL, &s->globstate);
279 return AVERROR(ENOENT);
282 last_index = s->globstate.gl_pathc - 1;
285 av_log(s1, AV_LOG_ERROR,
286 "Pattern type 'glob' was selected but globbing "
287 "is not supported by this libavformat build\n");
288 return AVERROR(ENOSYS);
290 } else if (s->pattern_type != PT_GLOB_SEQUENCE) {
291 av_log(s1, AV_LOG_ERROR,
292 "Unknown value '%d' for pattern_type option\n", s->pattern_type);
293 return AVERROR(EINVAL);
295 s->img_first = first_index;
296 s->img_last = last_index;
297 s->img_number = first_index;
298 /* compute duration */
300 st->duration = last_index - first_index + 1;
303 if (s1->video_codec_id) {
304 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
305 st->codec->codec_id = s1->video_codec_id;
306 } else if (s1->audio_codec_id) {
307 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
308 st->codec->codec_id = s1->audio_codec_id;
310 const char *str = strrchr(s->path, '.');
311 s->split_planes = str && !av_strcasecmp(str + 1, "y");
312 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
313 st->codec->codec_id = ff_guess_image2_codec(s->path);
314 if (st->codec->codec_id == AV_CODEC_ID_LJPEG)
315 st->codec->codec_id = AV_CODEC_ID_MJPEG;
317 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
318 pix_fmt != AV_PIX_FMT_NONE)
319 st->codec->pix_fmt = pix_fmt;
324 static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
326 VideoDemuxData *s = s1->priv_data;
327 char filename_bytes[1024];
328 char *filename = filename_bytes;
330 int size[3] = { 0 }, ret[3] = { 0 };
331 AVIOContext *f[3] = { NULL };
332 AVCodecContext *codec = s1->streams[0]->codec;
335 /* loop over input */
336 if (s->loop && s->img_number > s->img_last) {
337 s->img_number = s->img_first;
339 if (s->img_number > s->img_last)
343 filename = s->globstate.gl_pathv[s->img_number];
346 if (av_get_frame_filename(filename_bytes, sizeof(filename_bytes),
348 s->img_number) < 0 && s->img_number > 1)
351 for (i = 0; i < 3; i++) {
352 if (avio_open2(&f[i], filename, AVIO_FLAG_READ,
353 &s1->interrupt_callback, NULL) < 0) {
356 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",
360 size[i] = avio_size(f[i]);
362 if (!s->split_planes)
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]);
373 if (s->frame_size > 0) {
374 size[0] = s->frame_size;
380 if (av_new_packet(pkt, size[0] + size[1] + size[2]) < 0)
381 return AVERROR(ENOMEM);
382 pkt->stream_index = 0;
383 pkt->flags |= AV_PKT_FLAG_KEY;
388 for (i = 0; i < 3; i++) {
390 ret[i] = avio_read(f[i], pkt->data + pkt->size, size[i]);
398 if (ret[0] <= 0 || ret[1] < 0 || ret[2] < 0) {
400 return AVERROR(EIO); /* signal EOF */
409 static int img_read_close(struct AVFormatContext* s1)
411 VideoDemuxData *s = s1->priv_data;
414 globfree(&s->globstate);
420 static int img_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
422 VideoDemuxData *s1 = s->priv_data;
424 if (timestamp < 0 || !s1->loop && timestamp > s1->img_last - s1->img_first)
426 s1->img_number = timestamp%(s1->img_last - s1->img_first + 1) + s1->img_first;
431 #define OFFSET(x) offsetof(VideoDemuxData, x)
432 #define DEC AV_OPT_FLAG_DECODING_PARAM
433 static const AVOption options[] = {
434 { "framerate", "set the video framerate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, 0, DEC },
435 { "loop", "force loop over input file sequence", OFFSET(loop), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, DEC },
437 { "pattern_type", "set pattern type", OFFSET(pattern_type), AV_OPT_TYPE_INT, {.i64=PT_GLOB_SEQUENCE}, 0, INT_MAX, DEC, "pattern_type"},
438 { "glob_sequence","select glob/sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB_SEQUENCE}, INT_MIN, INT_MAX, DEC, "pattern_type" },
439 { "glob", "select glob pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_GLOB }, INT_MIN, INT_MAX, DEC, "pattern_type" },
440 { "sequence", "select sequence pattern type", 0, AV_OPT_TYPE_CONST, {.i64=PT_SEQUENCE }, INT_MIN, INT_MAX, DEC, "pattern_type" },
442 { "pixel_format", "set video pixel format", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
443 { "start_number", "set first number in the sequence", OFFSET(start_number), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
444 { "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 },
445 { "video_size", "set video size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, DEC },
446 { "frame_size", "force frame size in bytes", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
450 #if CONFIG_IMAGE2_DEMUXER
451 static const AVClass img2_class = {
452 .class_name = "image2 demuxer",
453 .item_name = av_default_item_name,
455 .version = LIBAVUTIL_VERSION_INT,
457 AVInputFormat ff_image2_demuxer = {
459 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
460 .priv_data_size = sizeof(VideoDemuxData),
461 .read_probe = img_read_probe,
462 .read_header = img_read_header,
463 .read_packet = img_read_packet,
464 .read_close = img_read_close,
465 .read_seek = img_read_seek,
466 .flags = AVFMT_NOFILE,
467 .priv_class = &img2_class,
470 #if CONFIG_IMAGE2PIPE_DEMUXER
471 static const AVClass img2pipe_class = {
472 .class_name = "image2pipe demuxer",
473 .item_name = av_default_item_name,
475 .version = LIBAVUTIL_VERSION_INT,
477 AVInputFormat ff_image2pipe_demuxer = {
478 .name = "image2pipe",
479 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
480 .priv_data_size = sizeof(VideoDemuxData),
481 .read_header = img_read_header,
482 .read_packet = img_read_packet,
483 .priv_class = &img2pipe_class,