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);
241 #if FF_API_LOOP_INPUT
243 s->loop = s1->loop_input;
246 av_strlcpy(s->path, s1->filename, sizeof(s->path));
251 if (s1->iformat->flags & AVFMT_NOFILE)
255 st->need_parsing = AVSTREAM_PARSE_FULL;
258 av_set_pts_info(st, 60, framerate.den, framerate.num);
260 if (width && height) {
261 st->codec->width = width;
262 st->codec->height = height;
266 if (find_image_range(&first_index, &last_index, s->path) < 0)
267 return AVERROR(ENOENT);
268 s->img_first = first_index;
269 s->img_last = last_index;
270 s->img_number = first_index;
271 /* compute duration */
273 st->duration = last_index - first_index + 1;
276 if(s1->video_codec_id){
277 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
278 st->codec->codec_id = s1->video_codec_id;
279 }else if(s1->audio_codec_id){
280 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
281 st->codec->codec_id = s1->audio_codec_id;
283 const char *str= strrchr(s->path, '.');
284 s->split_planes = str && !strcasecmp(str + 1, "y");
285 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
286 st->codec->codec_id = av_str2id(img_tags, s->path);
288 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pix_fmt != PIX_FMT_NONE)
289 st->codec->pix_fmt = pix_fmt;
294 static int read_packet(AVFormatContext *s1, AVPacket *pkt)
296 VideoData *s = s1->priv_data;
299 int size[3]={0}, ret[3]={0};
301 AVCodecContext *codec= s1->streams[0]->codec;
304 /* loop over input */
305 if (s->loop && s->img_number > s->img_last) {
306 s->img_number = s->img_first;
308 if (s->img_number > s->img_last)
310 if (av_get_frame_filename(filename, sizeof(filename),
311 s->path, s->img_number)<0 && s->img_number > 1)
314 if (avio_open(&f[i], filename, AVIO_FLAG_READ) < 0) {
317 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename);
320 size[i]= avio_size(f[i]);
324 filename[ strlen(filename) - 1 ]= 'U' + i;
327 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
328 infer_size(&codec->width, &codec->height, size[0]);
336 av_new_packet(pkt, size[0] + size[1] + size[2]);
337 pkt->stream_index = 0;
338 pkt->flags |= AV_PKT_FLAG_KEY;
343 ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]);
351 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
353 return AVERROR(EIO); /* signal EOF */
361 #if CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER
362 /******************************************************/
365 static int write_header(AVFormatContext *s)
367 VideoData *img = s->priv_data;
371 av_strlcpy(img->path, s->filename, sizeof(img->path));
374 if (s->oformat->flags & AVFMT_NOFILE)
379 str = strrchr(img->path, '.');
380 img->split_planes = str && !strcasecmp(str + 1, "y");
384 static int write_packet(AVFormatContext *s, AVPacket *pkt)
386 VideoData *img = s->priv_data;
389 AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
393 if (av_get_frame_filename(filename, sizeof(filename),
394 img->path, img->img_number) < 0 && img->img_number>1) {
395 av_log(s, AV_LOG_ERROR,
396 "Could not get frame filename number %d from pattern '%s'\n",
397 img->img_number, img->path);
398 return AVERROR(EINVAL);
401 if (avio_open(&pb[i], filename, AVIO_FLAG_WRITE) < 0) {
402 av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename);
406 if(!img->split_planes)
408 filename[ strlen(filename) - 1 ]= 'U' + i;
414 if(img->split_planes){
415 int ysize = codec->width * codec->height;
416 avio_write(pb[0], pkt->data , ysize);
417 avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
418 avio_write(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
424 if(av_str2id(img_tags, s->filename) == CODEC_ID_JPEG2000){
425 AVStream *st = s->streams[0];
426 if(st->codec->extradata_size > 8 &&
427 AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){
428 if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c'))
430 avio_wb32(pb[0], 12);
431 ffio_wfourcc(pb[0], "jP ");
432 avio_wb32(pb[0], 0x0D0A870A); // signature
433 avio_wb32(pb[0], 20);
434 ffio_wfourcc(pb[0], "ftyp");
435 ffio_wfourcc(pb[0], "jp2 ");
437 ffio_wfourcc(pb[0], "jp2 ");
438 avio_write(pb[0], st->codec->extradata, st->codec->extradata_size);
439 }else if(pkt->size < 8 ||
440 (!st->codec->extradata_size &&
441 AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature
443 av_log(s, AV_LOG_ERROR, "malformated jpeg2000 codestream\n");
447 avio_write(pb[0], pkt->data, pkt->size);
458 #endif /* CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER */
460 #define OFFSET(x) offsetof(VideoData, x)
461 #define DEC AV_OPT_FLAG_DECODING_PARAM
462 static const AVOption options[] = {
463 { "pixel_format", "", OFFSET(pixel_format), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
464 { "video_size", "", OFFSET(video_size), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
465 { "framerate", "", OFFSET(framerate), FF_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
466 { "loop", "", OFFSET(loop), FF_OPT_TYPE_INT, {.dbl = 0}, 0, 1, DEC },
470 static const AVClass img2_class = {
471 .class_name = "image2 demuxer",
472 .item_name = av_default_item_name,
474 .version = LIBAVUTIL_VERSION_INT,
478 #if CONFIG_IMAGE2_DEMUXER
479 AVInputFormat ff_image2_demuxer = {
481 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
482 .priv_data_size = sizeof(VideoData),
483 .read_probe = read_probe,
484 .read_header = read_header,
485 .read_packet = read_packet,
486 .flags = AVFMT_NOFILE,
487 .priv_class = &img2_class,
490 #if CONFIG_IMAGE2PIPE_DEMUXER
491 AVInputFormat ff_image2pipe_demuxer = {
492 .name = "image2pipe",
493 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
494 .priv_data_size = sizeof(VideoData),
495 .read_header = read_header,
496 .read_packet = read_packet,
497 .priv_class = &img2_class,
502 #if CONFIG_IMAGE2_MUXER
503 AVOutputFormat ff_image2_muxer = {
505 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
506 .extensions = "bmp,dpx,jls,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
507 "ppm,sgi,tga,tif,tiff,jp2",
508 .priv_data_size = sizeof(VideoData),
509 .video_codec = CODEC_ID_MJPEG,
510 .write_header = write_header,
511 .write_packet = write_packet,
512 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE
515 #if CONFIG_IMAGE2PIPE_MUXER
516 AVOutputFormat ff_image2pipe_muxer = {
517 .name = "image2pipe",
518 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
519 .priv_data_size = sizeof(VideoData),
520 .video_codec = CODEC_ID_MJPEG,
521 .write_header = write_header,
522 .write_packet = write_packet,
523 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS