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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 /* XXX: this is a hack */
23 extern int loop_input;
39 static const IdStrMap img_tags[] = {
40 { CODEC_ID_MJPEG , "jpeg"},
41 { CODEC_ID_MJPEG , "jpg"},
42 { CODEC_ID_LJPEG , "ljpg"},
43 { CODEC_ID_PNG , "png"},
44 { CODEC_ID_PPM , "ppm"},
45 { CODEC_ID_PGM , "pgm"},
46 { CODEC_ID_PGMYUV , "pgmyuv"},
47 { CODEC_ID_PBM , "pbm"},
48 { CODEC_ID_PAM , "pam"},
49 { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
50 { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
51 { CODEC_ID_MPEG4 , "mpg4-img"},
52 { CODEC_ID_FFV1 , "ffv1-img"},
53 { CODEC_ID_RAWVIDEO , "y"},
57 static int sizes[][2] = {
69 static int infer_size(int *width_ptr, int *height_ptr, int size)
73 for(i=0;i<sizeof(sizes)/sizeof(sizes[0]);i++) {
74 if ((sizes[i][0] * sizes[i][1]) == size) {
75 *width_ptr = sizes[i][0];
76 *height_ptr = sizes[i][1];
82 static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
84 str= strrchr(str, '.');
85 if(!str) return CODEC_ID_NONE;
90 for(i=0; toupper(tags->str[i]) == toupper(str[i]); i++){
91 if(tags->str[i]==0 && str[i]==0)
100 static const char *av_id2str(const IdStrMap *tags, enum CodecID id)
110 /* return -1 if no image found */
111 static int find_image_range(int *pfirst_index, int *plast_index,
115 int range, last_index, range1, first_index;
117 /* find the first image */
118 for(first_index = 0; first_index < 5; first_index++) {
119 if (get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
127 if (first_index == 5)
130 /* find the last image */
131 last_index = first_index;
139 if (get_frame_filename(buf, sizeof(buf), path,
140 last_index + range1) < 0)
145 /* just in case... */
146 if (range >= (1 << 30))
149 /* we are sure than image last_index + range exists */
154 *pfirst_index = first_index;
155 *plast_index = last_index;
162 static int image_probe(AVProbeData *p)
164 if (filename_number_test(p->filename) >= 0 && av_str2id(img_tags, p->filename))
165 return AVPROBE_SCORE_MAX;
170 enum CodecID av_guess_image2_codec(const char *filename){
171 return av_str2id(img_tags, filename);
174 static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
176 VideoData *s = s1->priv_data;
177 int first_index, last_index;
180 s1->ctx_flags |= AVFMTCTX_NOHEADER;
182 st = av_new_stream(s1, 0);
187 strcpy(s->path, s1->filename);
192 if (s1->iformat->flags & AVFMT_NOFILE)
199 if (!ap || !ap->frame_rate) {
200 st->codec.frame_rate = 25;
201 st->codec.frame_rate_base = 1;
203 st->codec.frame_rate = ap->frame_rate;
204 st->codec.frame_rate_base = ap->frame_rate_base;
207 if(ap && ap->width && ap->height){
208 st->codec.width = ap->width;
209 st->codec.height= ap->height;
213 if (find_image_range(&first_index, &last_index, s->path) < 0)
215 s->img_first = first_index;
216 s->img_last = last_index;
217 s->img_number = first_index;
218 /* compute duration */
220 st->duration = ((int64_t)AV_TIME_BASE *
221 (last_index - first_index + 1) *
222 st->codec.frame_rate_base) / st->codec.frame_rate;
225 if(ap->video_codec_id){
226 st->codec.codec_type = CODEC_TYPE_VIDEO;
227 st->codec.codec_id = ap->video_codec_id;
228 }else if(ap->audio_codec_id){
229 st->codec.codec_type = CODEC_TYPE_AUDIO;
230 st->codec.codec_id = ap->audio_codec_id;
232 st->codec.codec_type = CODEC_TYPE_VIDEO;
233 st->codec.codec_id = av_str2id(img_tags, s->path);
239 static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
241 VideoData *s = s1->priv_data;
244 int size[3]={0}, ret[3]={0};
245 ByteIOContext f1[3], *f[3]= {&f1[0], &f1[1], &f1[2]};
246 AVCodecContext *codec= &s1->streams[0]->codec;
249 /* loop over input */
250 if (loop_input && s->img_number > s->img_last) {
251 s->img_number = s->img_first;
253 if (get_frame_filename(filename, sizeof(filename),
254 s->path, s->img_number)<0 && s->img_number > 1)
257 if (url_fopen(f[i], filename, URL_RDONLY) < 0)
259 size[i]= url_filesize(url_fileno(f[i]));
261 if(codec->codec_id != CODEC_ID_RAWVIDEO)
263 filename[ strlen(filename) - 1 ]= 'U' + i;
266 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
267 infer_size(&codec->width, &codec->height, size[0]);
275 av_new_packet(pkt, size[0] + size[1] + size[2]);
276 pkt->stream_index = 0;
277 pkt->flags |= PKT_FLAG_KEY;
282 ret[i]= get_buffer(f[i], pkt->data + pkt->size, size[i]);
290 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
292 return AVERROR_IO; /* signal EOF */
300 static int img_read_close(AVFormatContext *s1)
305 /******************************************************/
308 static int img_write_header(AVFormatContext *s)
310 VideoData *img = s->priv_data;
313 strcpy(img->path, s->filename);
316 if (s->oformat->flags & AVFMT_NOFILE)
324 static int img_write_packet(AVFormatContext *s, AVPacket *pkt)
326 VideoData *img = s->priv_data;
327 ByteIOContext pb1[3], *pb[3]= {&pb1[0], &pb1[1], &pb1[2]};
329 AVCodecContext *codec= &s->streams[ pkt->stream_index ]->codec;
333 if (get_frame_filename(filename, sizeof(filename),
334 img->path, img->img_number) < 0 && img->img_number>1)
337 if (url_fopen(pb[i], filename, URL_WRONLY) < 0)
340 if(codec->codec_id != CODEC_ID_RAWVIDEO)
342 filename[ strlen(filename) - 1 ]= 'U' + i;
348 if(codec->codec_id == CODEC_ID_RAWVIDEO){
349 int size = (codec->width * codec->height)>>2;
350 put_buffer(pb[0], pkt->data , 4*size);
351 put_buffer(pb[1], pkt->data + 4*size, size);
352 put_buffer(pb[2], pkt->data + 5*size, size);
353 put_flush_packet(pb[1]);
354 put_flush_packet(pb[2]);
358 put_buffer(pb[0], pkt->data, pkt->size);
360 put_flush_packet(pb[0]);
369 static int img_write_trailer(AVFormatContext *s)
376 static AVInputFormat image2_iformat = {
389 static AVInputFormat image2pipe_iformat = {
391 "piped image2 sequence",
403 static AVOutputFormat image2_oformat = {
417 static AVOutputFormat image2pipe_oformat = {
419 "piped image2 sequence",
432 av_register_input_format(&image2_iformat);
433 av_register_output_format(&image2_oformat);
435 av_register_input_format(&image2pipe_iformat);
436 av_register_output_format(&image2pipe_oformat);