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/intreadwrite.h"
24 #include "libavutil/avstring.h"
25 #include "libavutil/log.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/pixdesc.h"
28 #include "libavutil/parseutils.h"
30 #include "avio_internal.h"
35 const AVClass *class; /**< Class for private options. */
41 int split_planes; /**< use independent file for each Y, U, V plane */
43 char *pixel_format; /**< Set by a private option. */
44 char *video_size; /**< Set by a private option. */
45 char *framerate; /**< Set by a private option. */
54 static const IdStrMap img_tags[] = {
55 { CODEC_ID_MJPEG , "jpeg"},
56 { CODEC_ID_MJPEG , "jpg"},
57 { CODEC_ID_LJPEG , "ljpg"},
58 { CODEC_ID_JPEGLS , "jls"},
59 { CODEC_ID_PNG , "png"},
60 { CODEC_ID_PNG , "mng"},
61 { CODEC_ID_PPM , "ppm"},
62 { CODEC_ID_PPM , "pnm"},
63 { CODEC_ID_PGM , "pgm"},
64 { CODEC_ID_PGMYUV , "pgmyuv"},
65 { CODEC_ID_PBM , "pbm"},
66 { CODEC_ID_PAM , "pam"},
67 { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
68 { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
69 { CODEC_ID_MPEG4 , "mpg4-img"},
70 { CODEC_ID_FFV1 , "ffv1-img"},
71 { CODEC_ID_RAWVIDEO , "y"},
72 { CODEC_ID_RAWVIDEO , "raw"},
73 { CODEC_ID_BMP , "bmp"},
74 { CODEC_ID_GIF , "gif"},
75 { CODEC_ID_TARGA , "tga"},
76 { CODEC_ID_TIFF , "tiff"},
77 { CODEC_ID_TIFF , "tif"},
78 { CODEC_ID_SGI , "sgi"},
79 { CODEC_ID_PTX , "ptx"},
80 { CODEC_ID_PCX , "pcx"},
81 { CODEC_ID_SUNRAST , "sun"},
82 { CODEC_ID_SUNRAST , "ras"},
83 { CODEC_ID_SUNRAST , "rs"},
84 { CODEC_ID_SUNRAST , "im1"},
85 { CODEC_ID_SUNRAST , "im8"},
86 { CODEC_ID_SUNRAST , "im24"},
87 { CODEC_ID_SUNRAST , "sunras"},
88 { CODEC_ID_JPEG2000 , "j2k"},
89 { CODEC_ID_JPEG2000 , "jp2"},
90 { CODEC_ID_JPEG2000 , "jpc"},
91 { CODEC_ID_DPX , "dpx"},
92 { CODEC_ID_PICTOR , "pic"},
93 { CODEC_ID_NONE , NULL}
96 static const int sizes[][2] = {
108 static int infer_size(int *width_ptr, int *height_ptr, int size)
112 for(i=0;i<FF_ARRAY_ELEMS(sizes);i++) {
113 if ((sizes[i][0] * sizes[i][1]) == size) {
114 *width_ptr = sizes[i][0];
115 *height_ptr = sizes[i][1];
121 static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
123 str= strrchr(str, '.');
124 if(!str) return CODEC_ID_NONE;
128 if (!strcasecmp(str, tags->str))
133 return CODEC_ID_NONE;
136 /* return -1 if no image found */
137 static int find_image_range(int *pfirst_index, int *plast_index,
141 int range, last_index, range1, first_index;
143 /* find the first image */
144 for(first_index = 0; first_index < 5; first_index++) {
145 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
148 if (avio_check(buf, AVIO_FLAG_READ) > 0)
152 if (avio_check(buf, AVIO_FLAG_READ) > 0)
155 if (first_index == 5)
158 /* find the last image */
159 last_index = first_index;
167 if (av_get_frame_filename(buf, sizeof(buf), path,
168 last_index + range1) < 0)
170 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
173 /* just in case... */
174 if (range >= (1 << 30))
177 /* we are sure than image last_index + range exists */
182 *pfirst_index = first_index;
183 *plast_index = last_index;
190 static int read_probe(AVProbeData *p)
192 if (p->filename && av_str2id(img_tags, p->filename)) {
193 if (av_filename_number_test(p->filename))
194 return AVPROBE_SCORE_MAX;
196 return AVPROBE_SCORE_MAX/2;
201 enum CodecID ff_guess_image2_codec(const char *filename)
203 return av_str2id(img_tags, filename);
206 #if FF_API_GUESS_IMG2_CODEC
207 enum CodecID av_guess_image2_codec(const char *filename){
208 return av_str2id(img_tags, filename);
212 static int read_header(AVFormatContext *s1, AVFormatParameters *ap)
214 VideoData *s = s1->priv_data;
215 int first_index, last_index, ret = 0;
216 int width = 0, height = 0;
218 enum PixelFormat pix_fmt = PIX_FMT_NONE;
219 AVRational framerate;
221 s1->ctx_flags |= AVFMTCTX_NOHEADER;
223 st = av_new_stream(s1, 0);
225 return AVERROR(ENOMEM);
228 if (s->pixel_format && (pix_fmt = av_get_pix_fmt(s->pixel_format)) == PIX_FMT_NONE) {
229 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n", s->pixel_format);
230 return AVERROR(EINVAL);
232 if (s->video_size && (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) {
233 av_log(s, AV_LOG_ERROR, "Could not parse video size: %s.\n", s->video_size);
236 if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) {
237 av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s->framerate);
240 #if FF_API_FORMAT_PARAMETERS
241 if (ap->pix_fmt != PIX_FMT_NONE)
242 pix_fmt = ap->pix_fmt;
247 if (ap->time_base.num)
248 framerate = (AVRational){ap->time_base.den, ap->time_base.num};
251 #if FF_API_LOOP_INPUT
253 s->loop = s1->loop_input;
256 av_strlcpy(s->path, s1->filename, sizeof(s->path));
261 if (s1->iformat->flags & AVFMT_NOFILE)
265 st->need_parsing = AVSTREAM_PARSE_FULL;
268 av_set_pts_info(st, 60, framerate.den, framerate.num);
270 if (width && height) {
271 st->codec->width = width;
272 st->codec->height = height;
276 if (find_image_range(&first_index, &last_index, s->path) < 0)
277 return AVERROR(ENOENT);
278 s->img_first = first_index;
279 s->img_last = last_index;
280 s->img_number = first_index;
281 /* compute duration */
283 st->duration = last_index - first_index + 1;
286 if(s1->video_codec_id){
287 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
288 st->codec->codec_id = s1->video_codec_id;
289 }else if(s1->audio_codec_id){
290 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
291 st->codec->codec_id = s1->audio_codec_id;
293 const char *str= strrchr(s->path, '.');
294 s->split_planes = str && !strcasecmp(str + 1, "y");
295 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
296 st->codec->codec_id = av_str2id(img_tags, s->path);
298 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pix_fmt != PIX_FMT_NONE)
299 st->codec->pix_fmt = pix_fmt;
304 static int read_packet(AVFormatContext *s1, AVPacket *pkt)
306 VideoData *s = s1->priv_data;
309 int size[3]={0}, ret[3]={0};
311 AVCodecContext *codec= s1->streams[0]->codec;
314 /* loop over input */
315 if (s->loop && s->img_number > s->img_last) {
316 s->img_number = s->img_first;
318 if (s->img_number > s->img_last)
320 if (av_get_frame_filename(filename, sizeof(filename),
321 s->path, s->img_number)<0 && s->img_number > 1)
324 if (avio_open(&f[i], filename, AVIO_FLAG_READ) < 0) {
327 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename);
330 size[i]= avio_size(f[i]);
334 filename[ strlen(filename) - 1 ]= 'U' + i;
337 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
338 infer_size(&codec->width, &codec->height, size[0]);
346 av_new_packet(pkt, size[0] + size[1] + size[2]);
347 pkt->stream_index = 0;
348 pkt->flags |= AV_PKT_FLAG_KEY;
353 ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]);
361 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
363 return AVERROR(EIO); /* signal EOF */
371 #if CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER
372 /******************************************************/
375 static int write_header(AVFormatContext *s)
377 VideoData *img = s->priv_data;
381 av_strlcpy(img->path, s->filename, sizeof(img->path));
384 if (s->oformat->flags & AVFMT_NOFILE)
389 str = strrchr(img->path, '.');
390 img->split_planes = str && !strcasecmp(str + 1, "y");
394 static int write_packet(AVFormatContext *s, AVPacket *pkt)
396 VideoData *img = s->priv_data;
399 AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
403 if (av_get_frame_filename(filename, sizeof(filename),
404 img->path, img->img_number) < 0 && img->img_number>1) {
405 av_log(s, AV_LOG_ERROR,
406 "Could not get frame filename number %d from pattern '%s'\n",
407 img->img_number, img->path);
408 return AVERROR(EINVAL);
411 if (avio_open(&pb[i], filename, AVIO_FLAG_WRITE) < 0) {
412 av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename);
416 if(!img->split_planes)
418 filename[ strlen(filename) - 1 ]= 'U' + i;
424 if(img->split_planes){
425 int ysize = codec->width * codec->height;
426 avio_write(pb[0], pkt->data , ysize);
427 avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
428 avio_write(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
434 if(av_str2id(img_tags, s->filename) == CODEC_ID_JPEG2000){
435 AVStream *st = s->streams[0];
436 if(st->codec->extradata_size > 8 &&
437 AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){
438 if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c'))
440 avio_wb32(pb[0], 12);
441 ffio_wfourcc(pb[0], "jP ");
442 avio_wb32(pb[0], 0x0D0A870A); // signature
443 avio_wb32(pb[0], 20);
444 ffio_wfourcc(pb[0], "ftyp");
445 ffio_wfourcc(pb[0], "jp2 ");
447 ffio_wfourcc(pb[0], "jp2 ");
448 avio_write(pb[0], st->codec->extradata, st->codec->extradata_size);
449 }else if(pkt->size < 8 ||
450 (!st->codec->extradata_size &&
451 AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature
453 av_log(s, AV_LOG_ERROR, "malformated jpeg2000 codestream\n");
457 avio_write(pb[0], pkt->data, pkt->size);
468 #endif /* CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER */
470 #define OFFSET(x) offsetof(VideoData, x)
471 #define DEC AV_OPT_FLAG_DECODING_PARAM
472 static const AVOption options[] = {
473 { "pixel_format", "", OFFSET(pixel_format), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
474 { "video_size", "", OFFSET(video_size), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
475 { "framerate", "", OFFSET(framerate), FF_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
476 { "loop", "", OFFSET(loop), FF_OPT_TYPE_INT, {.dbl = 0}, 0, 1, DEC },
480 static const AVClass img2_class = {
481 .class_name = "image2 demuxer",
482 .item_name = av_default_item_name,
484 .version = LIBAVUTIL_VERSION_INT,
488 #if CONFIG_IMAGE2_DEMUXER
489 AVInputFormat ff_image2_demuxer = {
491 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
492 .priv_data_size = sizeof(VideoData),
493 .read_probe = read_probe,
494 .read_header = read_header,
495 .read_packet = read_packet,
496 .flags = AVFMT_NOFILE,
497 .priv_class = &img2_class,
500 #if CONFIG_IMAGE2PIPE_DEMUXER
501 AVInputFormat ff_image2pipe_demuxer = {
502 .name = "image2pipe",
503 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
504 .priv_data_size = sizeof(VideoData),
505 .read_header = read_header,
506 .read_packet = read_packet,
507 .priv_class = &img2_class,
512 #if CONFIG_IMAGE2_MUXER
513 AVOutputFormat ff_image2_muxer = {
515 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
516 .extensions = "bmp,dpx,jls,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
517 "ppm,sgi,tga,tif,tiff,jp2",
518 .priv_data_size = sizeof(VideoData),
519 .video_codec = CODEC_ID_MJPEG,
520 .write_header = write_header,
521 .write_packet = write_packet,
522 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE
525 #if CONFIG_IMAGE2PIPE_MUXER
526 AVOutputFormat ff_image2pipe_muxer = {
527 .name = "image2pipe",
528 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
529 .priv_data_size = sizeof(VideoData),
530 .video_codec = CODEC_ID_MJPEG,
531 .write_header = write_header,
532 .write_packet = write_packet,
533 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS