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"
26 #include "avio_internal.h"
36 int split_planes; /**< use independent file for each Y, U, V plane */
45 static const IdStrMap img_tags[] = {
46 { CODEC_ID_MJPEG , "jpeg"},
47 { CODEC_ID_MJPEG , "jpg"},
48 { CODEC_ID_LJPEG , "ljpg"},
49 { CODEC_ID_PNG , "png"},
50 { CODEC_ID_PNG , "mng"},
51 { CODEC_ID_PPM , "ppm"},
52 { CODEC_ID_PPM , "pnm"},
53 { CODEC_ID_PGM , "pgm"},
54 { CODEC_ID_PGMYUV , "pgmyuv"},
55 { CODEC_ID_PBM , "pbm"},
56 { CODEC_ID_PAM , "pam"},
57 { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
58 { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
59 { CODEC_ID_MPEG4 , "mpg4-img"},
60 { CODEC_ID_FFV1 , "ffv1-img"},
61 { CODEC_ID_RAWVIDEO , "y"},
62 { CODEC_ID_RAWVIDEO , "raw"},
63 { CODEC_ID_BMP , "bmp"},
64 { CODEC_ID_GIF , "gif"},
65 { CODEC_ID_TARGA , "tga"},
66 { CODEC_ID_TIFF , "tiff"},
67 { CODEC_ID_TIFF , "tif"},
68 { CODEC_ID_SGI , "sgi"},
69 { CODEC_ID_PTX , "ptx"},
70 { CODEC_ID_PCX , "pcx"},
71 { CODEC_ID_SUNRAST , "sun"},
72 { CODEC_ID_SUNRAST , "ras"},
73 { CODEC_ID_SUNRAST , "rs"},
74 { CODEC_ID_SUNRAST , "im1"},
75 { CODEC_ID_SUNRAST , "im8"},
76 { CODEC_ID_SUNRAST , "im24"},
77 { CODEC_ID_SUNRAST , "sunras"},
78 { CODEC_ID_JPEG2000 , "j2k"},
79 { CODEC_ID_JPEG2000 , "jp2"},
80 { CODEC_ID_JPEG2000 , "jpc"},
81 { CODEC_ID_DPX , "dpx"},
82 { CODEC_ID_PICTOR , "pic"},
83 { CODEC_ID_NONE , NULL}
86 static const int sizes[][2] = {
98 static int infer_size(int *width_ptr, int *height_ptr, int size)
102 for(i=0;i<FF_ARRAY_ELEMS(sizes);i++) {
103 if ((sizes[i][0] * sizes[i][1]) == size) {
104 *width_ptr = sizes[i][0];
105 *height_ptr = sizes[i][1];
111 static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
113 str= strrchr(str, '.');
114 if(!str) return CODEC_ID_NONE;
118 if (!strcasecmp(str, tags->str))
123 return CODEC_ID_NONE;
126 /* return -1 if no image found */
127 static int find_image_range(int *pfirst_index, int *plast_index,
131 int range, last_index, range1, first_index;
133 /* find the first image */
134 for(first_index = 0; first_index < 5; first_index++) {
135 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
138 if (avio_check(buf, AVIO_FLAG_READ) > 0)
142 if (avio_check(buf, AVIO_FLAG_READ) > 0)
145 if (first_index == 5)
148 /* find the last image */
149 last_index = first_index;
157 if (av_get_frame_filename(buf, sizeof(buf), path,
158 last_index + range1) < 0)
160 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
163 /* just in case... */
164 if (range >= (1 << 30))
167 /* we are sure than image last_index + range exists */
172 *pfirst_index = first_index;
173 *plast_index = last_index;
180 static int read_probe(AVProbeData *p)
182 if (p->filename && av_str2id(img_tags, p->filename)) {
183 if (av_filename_number_test(p->filename))
184 return AVPROBE_SCORE_MAX;
186 return AVPROBE_SCORE_MAX/2;
191 enum CodecID ff_guess_image2_codec(const char *filename)
193 return av_str2id(img_tags, filename);
196 #if FF_API_GUESS_IMG2_CODEC
197 enum CodecID av_guess_image2_codec(const char *filename){
198 return av_str2id(img_tags, filename);
202 static int read_header(AVFormatContext *s1, AVFormatParameters *ap)
204 VideoData *s = s1->priv_data;
205 int first_index, last_index;
208 s1->ctx_flags |= AVFMTCTX_NOHEADER;
210 st = av_new_stream(s1, 0);
212 return AVERROR(ENOMEM);
215 av_strlcpy(s->path, s1->filename, sizeof(s->path));
220 if (s1->iformat->flags & AVFMT_NOFILE)
224 st->need_parsing = AVSTREAM_PARSE_FULL;
227 if (!ap->time_base.num) {
228 av_set_pts_info(st, 60, 1, 25);
230 av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den);
233 if(ap->width && ap->height){
234 st->codec->width = ap->width;
235 st->codec->height= ap->height;
239 if (find_image_range(&first_index, &last_index, s->path) < 0)
240 return AVERROR(ENOENT);
241 s->img_first = first_index;
242 s->img_last = last_index;
243 s->img_number = first_index;
244 /* compute duration */
246 st->duration = last_index - first_index + 1;
249 if(s1->video_codec_id){
250 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
251 st->codec->codec_id = s1->video_codec_id;
252 }else if(s1->audio_codec_id){
253 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
254 st->codec->codec_id = s1->audio_codec_id;
256 const char *str= strrchr(s->path, '.');
257 s->split_planes = str && !strcasecmp(str + 1, "y");
258 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
259 st->codec->codec_id = av_str2id(img_tags, s->path);
261 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE)
262 st->codec->pix_fmt = ap->pix_fmt;
267 static int read_packet(AVFormatContext *s1, AVPacket *pkt)
269 VideoData *s = s1->priv_data;
272 int size[3]={0}, ret[3]={0};
274 AVCodecContext *codec= s1->streams[0]->codec;
277 /* loop over input */
278 if (s1->loop_input && s->img_number > s->img_last) {
279 s->img_number = s->img_first;
281 if (s->img_number > s->img_last)
283 if (av_get_frame_filename(filename, sizeof(filename),
284 s->path, s->img_number)<0 && s->img_number > 1)
287 if (avio_open(&f[i], filename, AVIO_FLAG_READ) < 0) {
290 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename);
293 size[i]= avio_size(f[i]);
297 filename[ strlen(filename) - 1 ]= 'U' + i;
300 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
301 infer_size(&codec->width, &codec->height, size[0]);
309 av_new_packet(pkt, size[0] + size[1] + size[2]);
310 pkt->stream_index = 0;
311 pkt->flags |= AV_PKT_FLAG_KEY;
316 ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]);
324 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
326 return AVERROR(EIO); /* signal EOF */
334 #if CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER
335 /******************************************************/
338 static int write_header(AVFormatContext *s)
340 VideoData *img = s->priv_data;
344 av_strlcpy(img->path, s->filename, sizeof(img->path));
347 if (s->oformat->flags & AVFMT_NOFILE)
352 str = strrchr(img->path, '.');
353 img->split_planes = str && !strcasecmp(str + 1, "y");
357 static int write_packet(AVFormatContext *s, AVPacket *pkt)
359 VideoData *img = s->priv_data;
362 AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
366 if (av_get_frame_filename(filename, sizeof(filename),
367 img->path, img->img_number) < 0 && img->img_number>1) {
368 av_log(s, AV_LOG_ERROR,
369 "Could not get frame filename number %d from pattern '%s'\n",
370 img->img_number, img->path);
371 return AVERROR(EINVAL);
374 if (avio_open(&pb[i], filename, AVIO_FLAG_WRITE) < 0) {
375 av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename);
379 if(!img->split_planes)
381 filename[ strlen(filename) - 1 ]= 'U' + i;
387 if(img->split_planes){
388 int ysize = codec->width * codec->height;
389 avio_write(pb[0], pkt->data , ysize);
390 avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
391 avio_write(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
397 if(av_str2id(img_tags, s->filename) == CODEC_ID_JPEG2000){
398 AVStream *st = s->streams[0];
399 if(st->codec->extradata_size > 8 &&
400 AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){
401 if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c'))
403 avio_wb32(pb[0], 12);
404 ffio_wfourcc(pb[0], "jP ");
405 avio_wb32(pb[0], 0x0D0A870A); // signature
406 avio_wb32(pb[0], 20);
407 ffio_wfourcc(pb[0], "ftyp");
408 ffio_wfourcc(pb[0], "jp2 ");
410 ffio_wfourcc(pb[0], "jp2 ");
411 avio_write(pb[0], st->codec->extradata, st->codec->extradata_size);
412 }else if(pkt->size < 8 ||
413 (!st->codec->extradata_size &&
414 AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature
416 av_log(s, AV_LOG_ERROR, "malformated jpeg2000 codestream\n");
420 avio_write(pb[0], pkt->data, pkt->size);
431 #endif /* CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER */
434 #if CONFIG_IMAGE2_DEMUXER
435 AVInputFormat ff_image2_demuxer = {
437 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
438 .priv_data_size = sizeof(VideoData),
439 .read_probe = read_probe,
440 .read_header = read_header,
441 .read_packet = read_packet,
442 .flags = AVFMT_NOFILE,
445 #if CONFIG_IMAGE2PIPE_DEMUXER
446 AVInputFormat ff_image2pipe_demuxer = {
447 .name = "image2pipe",
448 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
449 .priv_data_size = sizeof(VideoData),
450 .read_header = read_header,
451 .read_packet = read_packet,
456 #if CONFIG_IMAGE2_MUXER
457 AVOutputFormat ff_image2_muxer = {
459 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
460 .extensions = "bmp,dpx,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
461 "ppm,sgi,tga,tif,tiff,jp2",
462 .priv_data_size = sizeof(VideoData),
463 .video_codec = CODEC_ID_MJPEG,
464 .write_header = write_header,
465 .write_packet = write_packet,
466 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE
469 #if CONFIG_IMAGE2PIPE_MUXER
470 AVOutputFormat ff_image2pipe_muxer = {
471 .name = "image2pipe",
472 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
473 .priv_data_size = sizeof(VideoData),
474 .video_codec = CODEC_ID_MJPEG,
475 .write_header = write_header,
476 .write_packet = write_packet,
477 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS