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"
26 #include "avio_internal.h"
43 static const IdStrMap img_tags[] = {
44 { CODEC_ID_MJPEG , "jpeg"},
45 { CODEC_ID_MJPEG , "jpg"},
46 { CODEC_ID_LJPEG , "ljpg"},
47 { CODEC_ID_PNG , "png"},
48 { CODEC_ID_PNG , "mng"},
49 { CODEC_ID_PPM , "ppm"},
50 { CODEC_ID_PPM , "pnm"},
51 { CODEC_ID_PGM , "pgm"},
52 { CODEC_ID_PGMYUV , "pgmyuv"},
53 { CODEC_ID_PBM , "pbm"},
54 { CODEC_ID_PAM , "pam"},
55 { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
56 { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
57 { CODEC_ID_MPEG4 , "mpg4-img"},
58 { CODEC_ID_FFV1 , "ffv1-img"},
59 { CODEC_ID_RAWVIDEO , "y"},
60 { CODEC_ID_BMP , "bmp"},
61 { CODEC_ID_GIF , "gif"},
62 { CODEC_ID_TARGA , "tga"},
63 { CODEC_ID_TIFF , "tiff"},
64 { CODEC_ID_TIFF , "tif"},
65 { CODEC_ID_SGI , "sgi"},
66 { CODEC_ID_PTX , "ptx"},
67 { CODEC_ID_PCX , "pcx"},
68 { CODEC_ID_SUNRAST , "sun"},
69 { CODEC_ID_SUNRAST , "ras"},
70 { CODEC_ID_SUNRAST , "rs"},
71 { CODEC_ID_SUNRAST , "im1"},
72 { CODEC_ID_SUNRAST , "im8"},
73 { CODEC_ID_SUNRAST , "im24"},
74 { CODEC_ID_SUNRAST , "sunras"},
75 { CODEC_ID_JPEG2000 , "jp2"},
76 { CODEC_ID_DPX , "dpx"},
77 { CODEC_ID_PICTOR , "pic"},
78 { CODEC_ID_NONE , NULL}
81 static const int sizes[][2] = {
93 static int infer_size(int *width_ptr, int *height_ptr, int size)
97 for(i=0;i<FF_ARRAY_ELEMS(sizes);i++) {
98 if ((sizes[i][0] * sizes[i][1]) == size) {
99 *width_ptr = sizes[i][0];
100 *height_ptr = sizes[i][1];
106 static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
108 str= strrchr(str, '.');
109 if(!str) return CODEC_ID_NONE;
113 if (!strcasecmp(str, tags->str))
118 return CODEC_ID_NONE;
121 /* return -1 if no image found */
122 static int find_image_range(int *pfirst_index, int *plast_index,
126 int range, last_index, range1, first_index;
128 /* find the first image */
129 for(first_index = 0; first_index < 5; first_index++) {
130 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
140 if (first_index == 5)
143 /* find the last image */
144 last_index = first_index;
152 if (av_get_frame_filename(buf, sizeof(buf), path,
153 last_index + range1) < 0)
158 /* just in case... */
159 if (range >= (1 << 30))
162 /* we are sure than image last_index + range exists */
167 *pfirst_index = first_index;
168 *plast_index = last_index;
175 static int read_probe(AVProbeData *p)
177 if (p->filename && av_str2id(img_tags, p->filename)) {
178 if (av_filename_number_test(p->filename))
179 return AVPROBE_SCORE_MAX;
181 return AVPROBE_SCORE_MAX/2;
186 enum CodecID av_guess_image2_codec(const char *filename){
187 return av_str2id(img_tags, filename);
190 static int read_header(AVFormatContext *s1, AVFormatParameters *ap)
192 VideoData *s = s1->priv_data;
193 int first_index, last_index;
196 s1->ctx_flags |= AVFMTCTX_NOHEADER;
198 st = av_new_stream(s1, 0);
200 return AVERROR(ENOMEM);
203 av_strlcpy(s->path, s1->filename, sizeof(s->path));
208 if (s1->iformat->flags & AVFMT_NOFILE)
212 st->need_parsing = AVSTREAM_PARSE_FULL;
215 if (!ap->time_base.num) {
216 av_set_pts_info(st, 60, 1, 25);
218 av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den);
221 if(ap->width && ap->height){
222 st->codec->width = ap->width;
223 st->codec->height= ap->height;
227 if (find_image_range(&first_index, &last_index, s->path) < 0)
228 return AVERROR(ENOENT);
229 s->img_first = first_index;
230 s->img_last = last_index;
231 s->img_number = first_index;
232 /* compute duration */
234 st->duration = last_index - first_index + 1;
237 if(s1->video_codec_id){
238 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
239 st->codec->codec_id = s1->video_codec_id;
240 }else if(s1->audio_codec_id){
241 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
242 st->codec->codec_id = s1->audio_codec_id;
244 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
245 st->codec->codec_id = av_str2id(img_tags, s->path);
247 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE)
248 st->codec->pix_fmt = ap->pix_fmt;
253 static int read_packet(AVFormatContext *s1, AVPacket *pkt)
255 VideoData *s = s1->priv_data;
258 int size[3]={0}, ret[3]={0};
260 AVCodecContext *codec= s1->streams[0]->codec;
263 /* loop over input */
264 if (s1->loop_input && s->img_number > s->img_last) {
265 s->img_number = s->img_first;
267 if (s->img_number > s->img_last)
269 if (av_get_frame_filename(filename, sizeof(filename),
270 s->path, s->img_number)<0 && s->img_number > 1)
273 if (avio_open(&f[i], filename, URL_RDONLY) < 0) {
276 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename);
279 size[i]= avio_size(f[i]);
281 if(codec->codec_id != CODEC_ID_RAWVIDEO)
283 filename[ strlen(filename) - 1 ]= 'U' + i;
286 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
287 infer_size(&codec->width, &codec->height, size[0]);
295 av_new_packet(pkt, size[0] + size[1] + size[2]);
296 pkt->stream_index = 0;
297 pkt->flags |= AV_PKT_FLAG_KEY;
302 ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]);
310 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
312 return AVERROR(EIO); /* signal EOF */
320 #if CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER
321 /******************************************************/
324 static int write_header(AVFormatContext *s)
326 VideoData *img = s->priv_data;
329 av_strlcpy(img->path, s->filename, sizeof(img->path));
332 if (s->oformat->flags & AVFMT_NOFILE)
340 static int write_packet(AVFormatContext *s, AVPacket *pkt)
342 VideoData *img = s->priv_data;
345 AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
349 if (av_get_frame_filename(filename, sizeof(filename),
350 img->path, img->img_number) < 0 && img->img_number>1) {
351 av_log(s, AV_LOG_ERROR,
352 "Could not get frame filename number %d from pattern '%s'\n",
353 img->img_number, img->path);
357 if (avio_open(&pb[i], filename, URL_WRONLY) < 0) {
358 av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename);
362 if(codec->codec_id != CODEC_ID_RAWVIDEO)
364 filename[ strlen(filename) - 1 ]= 'U' + i;
370 if(codec->codec_id == CODEC_ID_RAWVIDEO){
371 int ysize = codec->width * codec->height;
372 avio_write(pb[0], pkt->data , ysize);
373 avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
374 avio_write(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
375 put_flush_packet(pb[1]);
376 put_flush_packet(pb[2]);
380 if(av_str2id(img_tags, s->filename) == CODEC_ID_JPEG2000){
381 AVStream *st = s->streams[0];
382 if(st->codec->extradata_size > 8 &&
383 AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){
384 if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c'))
386 avio_wb32(pb[0], 12);
387 ffio_wfourcc(pb[0], "jP ");
388 avio_wb32(pb[0], 0x0D0A870A); // signature
389 avio_wb32(pb[0], 20);
390 ffio_wfourcc(pb[0], "ftyp");
391 ffio_wfourcc(pb[0], "jp2 ");
393 ffio_wfourcc(pb[0], "jp2 ");
394 avio_write(pb[0], st->codec->extradata, st->codec->extradata_size);
395 }else if(pkt->size < 8 ||
396 (!st->codec->extradata_size &&
397 AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature
399 av_log(s, AV_LOG_ERROR, "malformated jpeg2000 codestream\n");
403 avio_write(pb[0], pkt->data, pkt->size);
405 put_flush_packet(pb[0]);
414 #endif /* CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER */
417 #if CONFIG_IMAGE2_DEMUXER
418 AVInputFormat ff_image2_demuxer = {
420 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
421 .priv_data_size = sizeof(VideoData),
422 .read_probe = read_probe,
423 .read_header = read_header,
424 .read_packet = read_packet,
425 .flags = AVFMT_NOFILE,
428 #if CONFIG_IMAGE2PIPE_DEMUXER
429 AVInputFormat ff_image2pipe_demuxer = {
430 .name = "image2pipe",
431 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
432 .priv_data_size = sizeof(VideoData),
433 .read_header = read_header,
434 .read_packet = read_packet,
439 #if CONFIG_IMAGE2_MUXER
440 AVOutputFormat ff_image2_muxer = {
442 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
443 .extensions = "bmp,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
444 "ppm,sgi,tga,tif,tiff,jp2",
445 .priv_data_size = sizeof(VideoData),
446 .video_codec = CODEC_ID_MJPEG,
447 .write_header = write_header,
448 .write_packet = write_packet,
449 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE
452 #if CONFIG_IMAGE2PIPE_MUXER
453 AVOutputFormat ff_image2pipe_muxer = {
454 .name = "image2pipe",
455 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
456 .priv_data_size = sizeof(VideoData),
457 .video_codec = CODEC_ID_MJPEG,
458 .write_header = write_header,
459 .write_packet = write_packet,
460 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS