3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
4 * Copyright (c) 2004 Michael Niedermayer
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
36 static const IdStrMap img_tags[] = {
37 { CODEC_ID_MJPEG , "jpeg"},
38 { CODEC_ID_MJPEG , "jpg"},
39 { CODEC_ID_LJPEG , "ljpg"},
40 { CODEC_ID_PNG , "png"},
41 { CODEC_ID_PPM , "ppm"},
42 { CODEC_ID_PGM , "pgm"},
43 { CODEC_ID_PGMYUV , "pgmyuv"},
44 { CODEC_ID_PBM , "pbm"},
45 { CODEC_ID_PAM , "pam"},
46 { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
47 { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
48 { CODEC_ID_MPEG4 , "mpg4-img"},
49 { CODEC_ID_FFV1 , "ffv1-img"},
50 { CODEC_ID_RAWVIDEO , "y"},
51 { CODEC_ID_BMP , "bmp"},
55 static int sizes[][2] = {
67 static int infer_size(int *width_ptr, int *height_ptr, int size)
71 for(i=0;i<sizeof(sizes)/sizeof(sizes[0]);i++) {
72 if ((sizes[i][0] * sizes[i][1]) == size) {
73 *width_ptr = sizes[i][0];
74 *height_ptr = sizes[i][1];
80 static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
82 str= strrchr(str, '.');
83 if(!str) return CODEC_ID_NONE;
88 for(i=0; toupper(tags->str[i]) == toupper(str[i]); i++){
89 if(tags->str[i]==0 && str[i]==0)
98 /* return -1 if no image found */
99 static int find_image_range(int *pfirst_index, int *plast_index,
103 int range, last_index, range1, first_index;
105 /* find the first image */
106 for(first_index = 0; first_index < 5; first_index++) {
107 if (get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
115 if (first_index == 5)
118 /* find the last image */
119 last_index = first_index;
127 if (get_frame_filename(buf, sizeof(buf), path,
128 last_index + range1) < 0)
133 /* just in case... */
134 if (range >= (1 << 30))
137 /* we are sure than image last_index + range exists */
142 *pfirst_index = first_index;
143 *plast_index = last_index;
150 static int image_probe(AVProbeData *p)
152 if (filename_number_test(p->filename) >= 0 && av_str2id(img_tags, p->filename))
153 return AVPROBE_SCORE_MAX;
158 enum CodecID av_guess_image2_codec(const char *filename){
159 return av_str2id(img_tags, filename);
162 static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
164 VideoData *s = s1->priv_data;
165 int first_index, last_index;
168 s1->ctx_flags |= AVFMTCTX_NOHEADER;
170 st = av_new_stream(s1, 0);
175 pstrcpy(s->path, sizeof(s->path), s1->filename);
180 if (s1->iformat->flags & AVFMT_NOFILE)
187 if (!ap->time_base.num) {
188 av_set_pts_info(st, 60, 1, 25);
190 av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den);
193 if(ap->width && ap->height){
194 st->codec->width = ap->width;
195 st->codec->height= ap->height;
199 if (find_image_range(&first_index, &last_index, s->path) < 0)
201 s->img_first = first_index;
202 s->img_last = last_index;
203 s->img_number = first_index;
204 /* compute duration */
206 st->duration = last_index - first_index + 1;
209 if(ap->video_codec_id){
210 st->codec->codec_type = CODEC_TYPE_VIDEO;
211 st->codec->codec_id = ap->video_codec_id;
212 }else if(ap->audio_codec_id){
213 st->codec->codec_type = CODEC_TYPE_AUDIO;
214 st->codec->codec_id = ap->audio_codec_id;
216 st->codec->codec_type = CODEC_TYPE_VIDEO;
217 st->codec->codec_id = av_str2id(img_tags, s->path);
219 if(st->codec->codec_type == CODEC_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE)
220 st->codec->pix_fmt = ap->pix_fmt;
225 static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
227 VideoData *s = s1->priv_data;
230 int size[3]={0}, ret[3]={0};
231 ByteIOContext f1[3], *f[3]= {&f1[0], &f1[1], &f1[2]};
232 AVCodecContext *codec= s1->streams[0]->codec;
235 /* loop over input */
236 if (s1->loop_input && s->img_number > s->img_last) {
237 s->img_number = s->img_first;
239 if (get_frame_filename(filename, sizeof(filename),
240 s->path, s->img_number)<0 && s->img_number > 1)
243 if (url_fopen(f[i], filename, URL_RDONLY) < 0)
245 size[i]= url_fsize(f[i]);
247 if(codec->codec_id != CODEC_ID_RAWVIDEO)
249 filename[ strlen(filename) - 1 ]= 'U' + i;
252 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
253 infer_size(&codec->width, &codec->height, size[0]);
261 av_new_packet(pkt, size[0] + size[1] + size[2]);
262 pkt->stream_index = 0;
263 pkt->flags |= PKT_FLAG_KEY;
268 ret[i]= get_buffer(f[i], pkt->data + pkt->size, size[i]);
276 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
278 return AVERROR_IO; /* signal EOF */
286 static int img_read_close(AVFormatContext *s1)
292 /******************************************************/
295 static int img_write_header(AVFormatContext *s)
297 VideoData *img = s->priv_data;
300 pstrcpy(img->path, sizeof(img->path), s->filename);
303 if (s->oformat->flags & AVFMT_NOFILE)
311 static int img_write_packet(AVFormatContext *s, AVPacket *pkt)
313 VideoData *img = s->priv_data;
314 ByteIOContext pb1[3], *pb[3]= {&pb1[0], &pb1[1], &pb1[2]};
316 AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
320 if (get_frame_filename(filename, sizeof(filename),
321 img->path, img->img_number) < 0 && img->img_number>1)
324 if (url_fopen(pb[i], filename, URL_WRONLY) < 0)
327 if(codec->codec_id != CODEC_ID_RAWVIDEO)
329 filename[ strlen(filename) - 1 ]= 'U' + i;
335 if(codec->codec_id == CODEC_ID_RAWVIDEO){
336 int ysize = codec->width * codec->height;
337 put_buffer(pb[0], pkt->data , ysize);
338 put_buffer(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
339 put_buffer(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
340 put_flush_packet(pb[1]);
341 put_flush_packet(pb[2]);
345 put_buffer(pb[0], pkt->data, pkt->size);
347 put_flush_packet(pb[0]);
356 static int img_write_trailer(AVFormatContext *s)
361 #endif /* CONFIG_MUXERS */
364 #ifdef CONFIG_IMAGE2_DEMUXER
365 AVInputFormat image2_demuxer = {
378 #ifdef CONFIG_IMAGE2PIPE_DEMUXER
379 AVInputFormat image2pipe_demuxer = {
381 "piped image2 sequence",
392 #ifdef CONFIG_IMAGE2_MUXER
393 AVOutputFormat image2_muxer = {
407 #ifdef CONFIG_IMAGE2PIPE_MUXER
408 AVOutputFormat image2pipe_muxer = {
410 "piped image2 sequence",