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"
42 static const IdStrMap img_tags[] = {
43 { CODEC_ID_MJPEG , "jpeg"},
44 { CODEC_ID_MJPEG , "jpg"},
45 { CODEC_ID_LJPEG , "ljpg"},
46 { CODEC_ID_PNG , "png"},
47 { CODEC_ID_PNG , "mng"},
48 { CODEC_ID_PPM , "ppm"},
49 { CODEC_ID_PPM , "pnm"},
50 { CODEC_ID_PGM , "pgm"},
51 { CODEC_ID_PGMYUV , "pgmyuv"},
52 { CODEC_ID_PBM , "pbm"},
53 { CODEC_ID_PAM , "pam"},
54 { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
55 { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
56 { CODEC_ID_MPEG4 , "mpg4-img"},
57 { CODEC_ID_FFV1 , "ffv1-img"},
58 { CODEC_ID_RAWVIDEO , "y"},
59 { CODEC_ID_BMP , "bmp"},
60 { CODEC_ID_GIF , "gif"},
61 { CODEC_ID_TARGA , "tga"},
62 { CODEC_ID_TIFF , "tiff"},
63 { CODEC_ID_TIFF , "tif"},
64 { CODEC_ID_SGI , "sgi"},
65 { CODEC_ID_PTX , "ptx"},
66 { CODEC_ID_PCX , "pcx"},
67 { CODEC_ID_SUNRAST , "sun"},
68 { CODEC_ID_SUNRAST , "ras"},
69 { CODEC_ID_SUNRAST , "rs"},
70 { CODEC_ID_SUNRAST , "im1"},
71 { CODEC_ID_SUNRAST , "im8"},
72 { CODEC_ID_SUNRAST , "im24"},
73 { CODEC_ID_SUNRAST , "sunras"},
74 { CODEC_ID_JPEG2000 , "jp2"},
75 { CODEC_ID_NONE , NULL}
78 static const int sizes[][2] = {
90 static int infer_size(int *width_ptr, int *height_ptr, int size)
94 for(i=0;i<FF_ARRAY_ELEMS(sizes);i++) {
95 if ((sizes[i][0] * sizes[i][1]) == size) {
96 *width_ptr = sizes[i][0];
97 *height_ptr = sizes[i][1];
103 static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
105 str= strrchr(str, '.');
106 if(!str) return CODEC_ID_NONE;
110 if (!strcasecmp(str, tags->str))
115 return CODEC_ID_NONE;
118 /* return -1 if no image found */
119 static int find_image_range(int *pfirst_index, int *plast_index,
123 int range, last_index, range1, first_index;
125 /* find the first image */
126 for(first_index = 0; first_index < 5; first_index++) {
127 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
135 if (first_index == 5)
138 /* find the last image */
139 last_index = first_index;
147 if (av_get_frame_filename(buf, sizeof(buf), path,
148 last_index + range1) < 0)
153 /* just in case... */
154 if (range >= (1 << 30))
157 /* we are sure than image last_index + range exists */
162 *pfirst_index = first_index;
163 *plast_index = last_index;
170 static int image_probe(AVProbeData *p)
172 if (p->filename && av_str2id(img_tags, p->filename)) {
173 if (av_filename_number_test(p->filename))
174 return AVPROBE_SCORE_MAX;
176 return AVPROBE_SCORE_MAX/2;
181 enum CodecID av_guess_image2_codec(const char *filename){
182 return av_str2id(img_tags, filename);
185 static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
187 VideoData *s = s1->priv_data;
188 int first_index, last_index;
191 s1->ctx_flags |= AVFMTCTX_NOHEADER;
193 st = av_new_stream(s1, 0);
195 return AVERROR(ENOMEM);
198 av_strlcpy(s->path, s1->filename, sizeof(s->path));
203 if (s1->iformat->flags & AVFMT_NOFILE)
207 st->need_parsing = AVSTREAM_PARSE_FULL;
210 if (!ap->time_base.num) {
211 av_set_pts_info(st, 60, 1, 25);
213 av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den);
216 if(ap->width && ap->height){
217 st->codec->width = ap->width;
218 st->codec->height= ap->height;
222 if (find_image_range(&first_index, &last_index, s->path) < 0)
224 s->img_first = first_index;
225 s->img_last = last_index;
226 s->img_number = first_index;
227 /* compute duration */
229 st->duration = last_index - first_index + 1;
232 if(ap->video_codec_id){
233 st->codec->codec_type = CODEC_TYPE_VIDEO;
234 st->codec->codec_id = ap->video_codec_id;
235 }else if(ap->audio_codec_id){
236 st->codec->codec_type = CODEC_TYPE_AUDIO;
237 st->codec->codec_id = ap->audio_codec_id;
239 st->codec->codec_type = CODEC_TYPE_VIDEO;
240 st->codec->codec_id = av_str2id(img_tags, s->path);
242 if(st->codec->codec_type == CODEC_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE)
243 st->codec->pix_fmt = ap->pix_fmt;
248 static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
250 VideoData *s = s1->priv_data;
253 int size[3]={0}, ret[3]={0};
255 AVCodecContext *codec= s1->streams[0]->codec;
258 /* loop over input */
259 if (s1->loop_input && s->img_number > s->img_last) {
260 s->img_number = s->img_first;
262 if (av_get_frame_filename(filename, sizeof(filename),
263 s->path, s->img_number)<0 && s->img_number > 1)
266 if (url_fopen(&f[i], filename, URL_RDONLY) < 0)
268 size[i]= url_fsize(f[i]);
270 if(codec->codec_id != CODEC_ID_RAWVIDEO)
272 filename[ strlen(filename) - 1 ]= 'U' + i;
275 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
276 infer_size(&codec->width, &codec->height, size[0]);
284 av_new_packet(pkt, size[0] + size[1] + size[2]);
285 pkt->stream_index = 0;
286 pkt->flags |= PKT_FLAG_KEY;
291 ret[i]= get_buffer(f[i], pkt->data + pkt->size, size[i]);
299 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
301 return AVERROR(EIO); /* signal EOF */
309 #if CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER
310 /******************************************************/
313 static int img_write_header(AVFormatContext *s)
315 VideoData *img = s->priv_data;
318 av_strlcpy(img->path, s->filename, sizeof(img->path));
321 if (s->oformat->flags & AVFMT_NOFILE)
329 static int img_write_packet(AVFormatContext *s, AVPacket *pkt)
331 VideoData *img = s->priv_data;
332 ByteIOContext *pb[3];
334 AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
338 if (av_get_frame_filename(filename, sizeof(filename),
339 img->path, img->img_number) < 0 && img->img_number>1)
342 if (url_fopen(&pb[i], filename, URL_WRONLY) < 0)
345 if(codec->codec_id != CODEC_ID_RAWVIDEO)
347 filename[ strlen(filename) - 1 ]= 'U' + i;
353 if(codec->codec_id == CODEC_ID_RAWVIDEO){
354 int ysize = codec->width * codec->height;
355 put_buffer(pb[0], pkt->data , ysize);
356 put_buffer(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
357 put_buffer(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
358 put_flush_packet(pb[1]);
359 put_flush_packet(pb[2]);
363 if(av_str2id(img_tags, s->filename) == CODEC_ID_JPEG2000){
364 AVStream *st = s->streams[0];
365 if(st->codec->extradata_size > 8 &&
366 AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){
367 if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c'))
370 put_tag (pb[0], "jP ");
371 put_be32(pb[0], 0x0D0A870A); // signature
373 put_tag (pb[0], "ftyp");
374 put_tag (pb[0], "jp2 ");
376 put_tag (pb[0], "jp2 ");
377 put_buffer(pb[0], st->codec->extradata, st->codec->extradata_size);
378 }else if(pkt->size < 8 ||
379 (!st->codec->extradata_size &&
380 AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature
382 av_log(s, AV_LOG_ERROR, "malformated jpeg2000 codestream\n");
386 put_buffer(pb[0], pkt->data, pkt->size);
388 put_flush_packet(pb[0]);
397 #endif /* CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER */
400 #if CONFIG_IMAGE2_DEMUXER
401 AVInputFormat image2_demuxer = {
403 NULL_IF_CONFIG_SMALL("image2 sequence"),
414 #if CONFIG_IMAGE2PIPE_DEMUXER
415 AVInputFormat image2pipe_demuxer = {
417 NULL_IF_CONFIG_SMALL("piped image2 sequence"),
426 #if CONFIG_IMAGE2_MUXER
427 AVOutputFormat image2_muxer = {
429 NULL_IF_CONFIG_SMALL("image2 sequence"),
431 "bmp,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,ppm,sgi,tif,tiff,jp2",
438 .flags= AVFMT_NOTIMESTAMPS | AVFMT_NOFILE
441 #if CONFIG_IMAGE2PIPE_MUXER
442 AVOutputFormat image2pipe_muxer = {
444 NULL_IF_CONFIG_SMALL("piped image2 sequence"),
452 .flags= AVFMT_NOTIMESTAMPS