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
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"},
54 { CODEC_ID_BMP , "bmp"},
55 { CODEC_ID_GIF , "gif"},
56 { CODEC_ID_TARGA , "tga"},
57 { CODEC_ID_TIFF , "tiff"},
58 { CODEC_ID_SGI , "sgi"},
59 { CODEC_ID_PTX , "ptx"},
63 static int sizes[][2] = {
75 static int infer_size(int *width_ptr, int *height_ptr, int size)
79 for(i=0;i<sizeof(sizes)/sizeof(sizes[0]);i++) {
80 if ((sizes[i][0] * sizes[i][1]) == size) {
81 *width_ptr = sizes[i][0];
82 *height_ptr = sizes[i][1];
88 static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
90 str= strrchr(str, '.');
91 if(!str) return CODEC_ID_NONE;
96 for(i=0; toupper(tags->str[i]) == toupper(str[i]); i++){
97 if(tags->str[i]==0 && str[i]==0)
103 return CODEC_ID_NONE;
106 /* return -1 if no image found */
107 static int find_image_range(int *pfirst_index, int *plast_index,
111 int range, last_index, range1, first_index;
113 /* find the first image */
114 for(first_index = 0; first_index < 5; first_index++) {
115 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
123 if (first_index == 5)
126 /* find the last image */
127 last_index = first_index;
135 if (av_get_frame_filename(buf, sizeof(buf), path,
136 last_index + range1) < 0)
141 /* just in case... */
142 if (range >= (1 << 30))
145 /* we are sure than image last_index + range exists */
150 *pfirst_index = first_index;
151 *plast_index = last_index;
158 static int image_probe(AVProbeData *p)
160 if (p->filename && av_str2id(img_tags, p->filename)) {
161 if (av_filename_number_test(p->filename))
162 return AVPROBE_SCORE_MAX;
164 return AVPROBE_SCORE_MAX/2;
169 enum CodecID av_guess_image2_codec(const char *filename){
170 return av_str2id(img_tags, filename);
173 static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
175 VideoData *s = s1->priv_data;
176 int first_index, last_index;
179 s1->ctx_flags |= AVFMTCTX_NOHEADER;
181 st = av_new_stream(s1, 0);
183 return AVERROR(ENOMEM);
186 av_strlcpy(s->path, s1->filename, sizeof(s->path));
191 if (s1->iformat->flags & AVFMT_NOFILE)
195 st->need_parsing = AVSTREAM_PARSE_FULL;
198 if (!ap->time_base.num) {
199 av_set_pts_info(st, 60, 1, 25);
201 av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den);
204 if(ap->width && ap->height){
205 st->codec->width = ap->width;
206 st->codec->height= ap->height;
210 if (find_image_range(&first_index, &last_index, s->path) < 0)
212 s->img_first = first_index;
213 s->img_last = last_index;
214 s->img_number = first_index;
215 /* compute duration */
217 st->duration = last_index - first_index + 1;
220 if(ap->video_codec_id){
221 st->codec->codec_type = CODEC_TYPE_VIDEO;
222 st->codec->codec_id = ap->video_codec_id;
223 }else if(ap->audio_codec_id){
224 st->codec->codec_type = CODEC_TYPE_AUDIO;
225 st->codec->codec_id = ap->audio_codec_id;
227 st->codec->codec_type = CODEC_TYPE_VIDEO;
228 st->codec->codec_id = av_str2id(img_tags, s->path);
230 if(st->codec->codec_type == CODEC_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE)
231 st->codec->pix_fmt = ap->pix_fmt;
236 static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
238 VideoData *s = s1->priv_data;
241 int size[3]={0}, ret[3]={0};
242 ByteIOContext f1[3], *f[3]= {&f1[0], &f1[1], &f1[2]};
243 AVCodecContext *codec= s1->streams[0]->codec;
246 /* loop over input */
247 if (s1->loop_input && s->img_number > s->img_last) {
248 s->img_number = s->img_first;
250 if (av_get_frame_filename(filename, sizeof(filename),
251 s->path, s->img_number)<0 && s->img_number > 1)
254 if (url_fopen(f[i], filename, URL_RDONLY) < 0)
256 size[i]= url_fsize(f[i]);
258 if(codec->codec_id != CODEC_ID_RAWVIDEO)
260 filename[ strlen(filename) - 1 ]= 'U' + i;
263 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
264 infer_size(&codec->width, &codec->height, size[0]);
272 av_new_packet(pkt, size[0] + size[1] + size[2]);
273 pkt->stream_index = 0;
274 pkt->flags |= PKT_FLAG_KEY;
279 ret[i]= get_buffer(f[i], pkt->data + pkt->size, size[i]);
287 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
289 return AVERROR_IO; /* signal EOF */
297 static int img_read_close(AVFormatContext *s1)
303 /******************************************************/
306 static int img_write_header(AVFormatContext *s)
308 VideoData *img = s->priv_data;
311 av_strlcpy(img->path, s->filename, sizeof(img->path));
314 if (s->oformat->flags & AVFMT_NOFILE)
322 static int img_write_packet(AVFormatContext *s, AVPacket *pkt)
324 VideoData *img = s->priv_data;
325 ByteIOContext pb1[3], *pb[3]= {&pb1[0], &pb1[1], &pb1[2]};
327 AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
331 if (av_get_frame_filename(filename, sizeof(filename),
332 img->path, img->img_number) < 0 && img->img_number>1)
335 if (url_fopen(pb[i], filename, URL_WRONLY) < 0)
338 if(codec->codec_id != CODEC_ID_RAWVIDEO)
340 filename[ strlen(filename) - 1 ]= 'U' + i;
346 if(codec->codec_id == CODEC_ID_RAWVIDEO){
347 int ysize = codec->width * codec->height;
348 put_buffer(pb[0], pkt->data , ysize);
349 put_buffer(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
350 put_buffer(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
351 put_flush_packet(pb[1]);
352 put_flush_packet(pb[2]);
356 put_buffer(pb[0], pkt->data, pkt->size);
358 put_flush_packet(pb[0]);
367 static int img_write_trailer(AVFormatContext *s)
372 #endif /* CONFIG_MUXERS */
375 #ifdef CONFIG_IMAGE2_DEMUXER
376 AVInputFormat image2_demuxer = {
389 #ifdef CONFIG_IMAGE2PIPE_DEMUXER
390 AVInputFormat image2pipe_demuxer = {
392 "piped image2 sequence",
403 #ifdef CONFIG_IMAGE2_MUXER
404 AVOutputFormat image2_muxer = {
418 #ifdef CONFIG_IMAGE2PIPE_MUXER
419 AVOutputFormat image2pipe_muxer = {
421 "piped image2 sequence",