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/avstring.h"
41 static const IdStrMap img_tags[] = {
42 { CODEC_ID_MJPEG , "jpeg"},
43 { CODEC_ID_MJPEG , "jpg"},
44 { CODEC_ID_LJPEG , "ljpg"},
45 { CODEC_ID_PNG , "png"},
46 { CODEC_ID_PNG , "mng"},
47 { CODEC_ID_PPM , "ppm"},
48 { CODEC_ID_PGM , "pgm"},
49 { CODEC_ID_PGMYUV , "pgmyuv"},
50 { CODEC_ID_PBM , "pbm"},
51 { CODEC_ID_PAM , "pam"},
52 { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
53 { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
54 { CODEC_ID_MPEG4 , "mpg4-img"},
55 { CODEC_ID_FFV1 , "ffv1-img"},
56 { CODEC_ID_RAWVIDEO , "y"},
57 { CODEC_ID_BMP , "bmp"},
58 { CODEC_ID_GIF , "gif"},
59 { CODEC_ID_TARGA , "tga"},
60 { CODEC_ID_TIFF , "tiff"},
61 { CODEC_ID_TIFF , "tif"},
62 { CODEC_ID_SGI , "sgi"},
63 { CODEC_ID_PTX , "ptx"},
64 { CODEC_ID_PCX , "pcx"},
65 { CODEC_ID_SUNRAST , "sun"},
66 { CODEC_ID_SUNRAST , "ras"},
67 { CODEC_ID_SUNRAST , "rs"},
68 { CODEC_ID_SUNRAST , "im1"},
69 { CODEC_ID_SUNRAST , "im8"},
70 { CODEC_ID_SUNRAST , "im24"},
71 { CODEC_ID_SUNRAST , "sunras"},
72 { CODEC_ID_NONE , NULL}
75 static int sizes[][2] = {
87 static int infer_size(int *width_ptr, int *height_ptr, int size)
91 for(i=0;i<sizeof(sizes)/sizeof(sizes[0]);i++) {
92 if ((sizes[i][0] * sizes[i][1]) == size) {
93 *width_ptr = sizes[i][0];
94 *height_ptr = sizes[i][1];
100 static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
102 str= strrchr(str, '.');
103 if(!str) return CODEC_ID_NONE;
107 if (!strcasecmp(str, tags->str))
112 return CODEC_ID_NONE;
115 /* return -1 if no image found */
116 static int find_image_range(int *pfirst_index, int *plast_index,
120 int range, last_index, range1, first_index;
122 /* find the first image */
123 for(first_index = 0; first_index < 5; first_index++) {
124 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
132 if (first_index == 5)
135 /* find the last image */
136 last_index = first_index;
144 if (av_get_frame_filename(buf, sizeof(buf), path,
145 last_index + range1) < 0)
150 /* just in case... */
151 if (range >= (1 << 30))
154 /* we are sure than image last_index + range exists */
159 *pfirst_index = first_index;
160 *plast_index = last_index;
167 static int image_probe(AVProbeData *p)
169 if (p->filename && av_str2id(img_tags, p->filename)) {
170 if (av_filename_number_test(p->filename))
171 return AVPROBE_SCORE_MAX;
173 return AVPROBE_SCORE_MAX/2;
178 enum CodecID av_guess_image2_codec(const char *filename){
179 return av_str2id(img_tags, filename);
182 static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
184 VideoData *s = s1->priv_data;
185 int first_index, last_index;
188 s1->ctx_flags |= AVFMTCTX_NOHEADER;
190 st = av_new_stream(s1, 0);
192 return AVERROR(ENOMEM);
195 av_strlcpy(s->path, s1->filename, sizeof(s->path));
200 if (s1->iformat->flags & AVFMT_NOFILE)
204 st->need_parsing = AVSTREAM_PARSE_FULL;
207 if (!ap->time_base.num) {
208 av_set_pts_info(st, 60, 1, 25);
210 av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den);
213 if(ap->width && ap->height){
214 st->codec->width = ap->width;
215 st->codec->height= ap->height;
219 if (find_image_range(&first_index, &last_index, s->path) < 0)
221 s->img_first = first_index;
222 s->img_last = last_index;
223 s->img_number = first_index;
224 /* compute duration */
226 st->duration = last_index - first_index + 1;
229 if(ap->video_codec_id){
230 st->codec->codec_type = CODEC_TYPE_VIDEO;
231 st->codec->codec_id = ap->video_codec_id;
232 }else if(ap->audio_codec_id){
233 st->codec->codec_type = CODEC_TYPE_AUDIO;
234 st->codec->codec_id = ap->audio_codec_id;
236 st->codec->codec_type = CODEC_TYPE_VIDEO;
237 st->codec->codec_id = av_str2id(img_tags, s->path);
239 if(st->codec->codec_type == CODEC_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE)
240 st->codec->pix_fmt = ap->pix_fmt;
245 static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
247 VideoData *s = s1->priv_data;
250 int size[3]={0}, ret[3]={0};
252 AVCodecContext *codec= s1->streams[0]->codec;
255 /* loop over input */
256 if (s1->loop_input && s->img_number > s->img_last) {
257 s->img_number = s->img_first;
259 if (av_get_frame_filename(filename, sizeof(filename),
260 s->path, s->img_number)<0 && s->img_number > 1)
263 if (url_fopen(&f[i], filename, URL_RDONLY) < 0)
265 size[i]= url_fsize(f[i]);
267 if(codec->codec_id != CODEC_ID_RAWVIDEO)
269 filename[ strlen(filename) - 1 ]= 'U' + i;
272 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
273 infer_size(&codec->width, &codec->height, size[0]);
281 av_new_packet(pkt, size[0] + size[1] + size[2]);
282 pkt->stream_index = 0;
283 pkt->flags |= PKT_FLAG_KEY;
288 ret[i]= get_buffer(f[i], pkt->data + pkt->size, size[i]);
296 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
298 return AVERROR(EIO); /* signal EOF */
307 /******************************************************/
310 static int img_write_header(AVFormatContext *s)
312 VideoData *img = s->priv_data;
315 av_strlcpy(img->path, s->filename, sizeof(img->path));
318 if (s->oformat->flags & AVFMT_NOFILE)
326 static int img_write_packet(AVFormatContext *s, AVPacket *pkt)
328 VideoData *img = s->priv_data;
329 ByteIOContext *pb[3];
331 AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
335 if (av_get_frame_filename(filename, sizeof(filename),
336 img->path, img->img_number) < 0 && img->img_number>1)
339 if (url_fopen(&pb[i], filename, URL_WRONLY) < 0)
342 if(codec->codec_id != CODEC_ID_RAWVIDEO)
344 filename[ strlen(filename) - 1 ]= 'U' + i;
350 if(codec->codec_id == CODEC_ID_RAWVIDEO){
351 int ysize = codec->width * codec->height;
352 put_buffer(pb[0], pkt->data , ysize);
353 put_buffer(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
354 put_buffer(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
355 put_flush_packet(pb[1]);
356 put_flush_packet(pb[2]);
360 put_buffer(pb[0], pkt->data, pkt->size);
362 put_flush_packet(pb[0]);
371 #endif /* CONFIG_MUXERS */
374 #ifdef CONFIG_IMAGE2_DEMUXER
375 AVInputFormat image2_demuxer = {
377 NULL_IF_CONFIG_SMALL("image2 sequence"),
388 #ifdef CONFIG_IMAGE2PIPE_DEMUXER
389 AVInputFormat image2pipe_demuxer = {
391 NULL_IF_CONFIG_SMALL("piped image2 sequence"),
400 #ifdef CONFIG_IMAGE2_MUXER
401 AVOutputFormat image2_muxer = {
403 NULL_IF_CONFIG_SMALL("image2 sequence"),
415 #ifdef CONFIG_IMAGE2PIPE_MUXER
416 AVOutputFormat image2pipe_muxer = {
418 NULL_IF_CONFIG_SMALL("piped image2 sequence"),