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"
36 int split_planes; /**< use independent file for each Y, U, V plane */
45 static const IdStrMap img_tags[] = {
46 { CODEC_ID_MJPEG , "jpeg"},
47 { CODEC_ID_MJPEG , "jpg"},
48 { CODEC_ID_LJPEG , "ljpg"},
49 { CODEC_ID_PNG , "png"},
50 { CODEC_ID_PNG , "mng"},
51 { CODEC_ID_PPM , "ppm"},
52 { CODEC_ID_PPM , "pnm"},
53 { CODEC_ID_PGM , "pgm"},
54 { CODEC_ID_PGMYUV , "pgmyuv"},
55 { CODEC_ID_PBM , "pbm"},
56 { CODEC_ID_PAM , "pam"},
57 { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
58 { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
59 { CODEC_ID_MPEG4 , "mpg4-img"},
60 { CODEC_ID_FFV1 , "ffv1-img"},
61 { CODEC_ID_RAWVIDEO , "y"},
62 { CODEC_ID_RAWVIDEO , "raw"},
63 { CODEC_ID_BMP , "bmp"},
64 { CODEC_ID_GIF , "gif"},
65 { CODEC_ID_TARGA , "tga"},
66 { CODEC_ID_TIFF , "tiff"},
67 { CODEC_ID_TIFF , "tif"},
68 { CODEC_ID_SGI , "sgi"},
69 { CODEC_ID_PTX , "ptx"},
70 { CODEC_ID_PCX , "pcx"},
71 { CODEC_ID_SUNRAST , "sun"},
72 { CODEC_ID_SUNRAST , "ras"},
73 { CODEC_ID_SUNRAST , "rs"},
74 { CODEC_ID_SUNRAST , "im1"},
75 { CODEC_ID_SUNRAST , "im8"},
76 { CODEC_ID_SUNRAST , "im24"},
77 { CODEC_ID_SUNRAST , "sunras"},
78 { CODEC_ID_JPEG2000 , "jp2"},
79 { CODEC_ID_DPX , "dpx"},
80 { CODEC_ID_PICTOR , "pic"},
81 { CODEC_ID_NONE , NULL}
84 static const int sizes[][2] = {
96 static int infer_size(int *width_ptr, int *height_ptr, int size)
100 for(i=0;i<FF_ARRAY_ELEMS(sizes);i++) {
101 if ((sizes[i][0] * sizes[i][1]) == size) {
102 *width_ptr = sizes[i][0];
103 *height_ptr = sizes[i][1];
109 static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
111 str= strrchr(str, '.');
112 if(!str) return CODEC_ID_NONE;
116 if (!strcasecmp(str, tags->str))
121 return CODEC_ID_NONE;
124 /* return -1 if no image found */
125 static int find_image_range(int *pfirst_index, int *plast_index,
129 int range, last_index, range1, first_index;
131 /* find the first image */
132 for(first_index = 0; first_index < 5; first_index++) {
133 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
143 if (first_index == 5)
146 /* find the last image */
147 last_index = first_index;
155 if (av_get_frame_filename(buf, sizeof(buf), path,
156 last_index + range1) < 0)
161 /* just in case... */
162 if (range >= (1 << 30))
165 /* we are sure than image last_index + range exists */
170 *pfirst_index = first_index;
171 *plast_index = last_index;
178 static int read_probe(AVProbeData *p)
180 if (p->filename && av_str2id(img_tags, p->filename)) {
181 if (av_filename_number_test(p->filename))
182 return AVPROBE_SCORE_MAX;
184 return AVPROBE_SCORE_MAX/2;
189 enum CodecID ff_guess_image2_codec(const char *filename)
191 return av_str2id(img_tags, filename);
194 #if FF_API_GUESS_IMG2_CODEC
195 enum CodecID av_guess_image2_codec(const char *filename){
196 return av_str2id(img_tags, filename);
200 static int read_header(AVFormatContext *s1, AVFormatParameters *ap)
202 VideoData *s = s1->priv_data;
203 int first_index, last_index;
206 s1->ctx_flags |= AVFMTCTX_NOHEADER;
208 st = av_new_stream(s1, 0);
210 return AVERROR(ENOMEM);
213 av_strlcpy(s->path, s1->filename, sizeof(s->path));
218 if (s1->iformat->flags & AVFMT_NOFILE)
222 st->need_parsing = AVSTREAM_PARSE_FULL;
225 if (!ap->time_base.num) {
226 av_set_pts_info(st, 60, 1, 25);
228 av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den);
231 if(ap->width && ap->height){
232 st->codec->width = ap->width;
233 st->codec->height= ap->height;
237 if (find_image_range(&first_index, &last_index, s->path) < 0)
238 return AVERROR(ENOENT);
239 s->img_first = first_index;
240 s->img_last = last_index;
241 s->img_number = first_index;
242 /* compute duration */
244 st->duration = last_index - first_index + 1;
247 if(s1->video_codec_id){
248 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
249 st->codec->codec_id = s1->video_codec_id;
250 }else if(s1->audio_codec_id){
251 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
252 st->codec->codec_id = s1->audio_codec_id;
254 const char *str= strrchr(s->path, '.');
255 s->split_planes = str && !strcasecmp(str + 1, "y");
256 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
257 st->codec->codec_id = av_str2id(img_tags, s->path);
259 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE)
260 st->codec->pix_fmt = ap->pix_fmt;
265 static int read_packet(AVFormatContext *s1, AVPacket *pkt)
267 VideoData *s = s1->priv_data;
270 int size[3]={0}, ret[3]={0};
272 AVCodecContext *codec= s1->streams[0]->codec;
275 /* loop over input */
276 if (s1->loop_input && s->img_number > s->img_last) {
277 s->img_number = s->img_first;
279 if (s->img_number > s->img_last)
281 if (av_get_frame_filename(filename, sizeof(filename),
282 s->path, s->img_number)<0 && s->img_number > 1)
285 if (avio_open(&f[i], filename, AVIO_RDONLY) < 0) {
288 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename);
291 size[i]= avio_size(f[i]);
295 filename[ strlen(filename) - 1 ]= 'U' + i;
298 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
299 infer_size(&codec->width, &codec->height, size[0]);
307 av_new_packet(pkt, size[0] + size[1] + size[2]);
308 pkt->stream_index = 0;
309 pkt->flags |= AV_PKT_FLAG_KEY;
314 ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]);
322 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
324 return AVERROR(EIO); /* signal EOF */
332 #if CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER
333 /******************************************************/
336 static int write_header(AVFormatContext *s)
338 VideoData *img = s->priv_data;
342 av_strlcpy(img->path, s->filename, sizeof(img->path));
345 if (s->oformat->flags & AVFMT_NOFILE)
350 str = strrchr(img->path, '.');
351 img->split_planes = str && !strcasecmp(str + 1, "y");
355 static int write_packet(AVFormatContext *s, AVPacket *pkt)
357 VideoData *img = s->priv_data;
360 AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
364 if (av_get_frame_filename(filename, sizeof(filename),
365 img->path, img->img_number) < 0 && img->img_number>1) {
366 av_log(s, AV_LOG_ERROR,
367 "Could not get frame filename number %d from pattern '%s'\n",
368 img->img_number, img->path);
372 if (avio_open(&pb[i], filename, AVIO_WRONLY) < 0) {
373 av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename);
377 if(!img->split_planes)
379 filename[ strlen(filename) - 1 ]= 'U' + i;
385 if(img->split_planes){
386 int ysize = codec->width * codec->height;
387 avio_write(pb[0], pkt->data , ysize);
388 avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
389 avio_write(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
395 if(av_str2id(img_tags, s->filename) == CODEC_ID_JPEG2000){
396 AVStream *st = s->streams[0];
397 if(st->codec->extradata_size > 8 &&
398 AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){
399 if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c'))
401 avio_wb32(pb[0], 12);
402 ffio_wfourcc(pb[0], "jP ");
403 avio_wb32(pb[0], 0x0D0A870A); // signature
404 avio_wb32(pb[0], 20);
405 ffio_wfourcc(pb[0], "ftyp");
406 ffio_wfourcc(pb[0], "jp2 ");
408 ffio_wfourcc(pb[0], "jp2 ");
409 avio_write(pb[0], st->codec->extradata, st->codec->extradata_size);
410 }else if(pkt->size < 8 ||
411 (!st->codec->extradata_size &&
412 AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature
414 av_log(s, AV_LOG_ERROR, "malformated jpeg2000 codestream\n");
418 avio_write(pb[0], pkt->data, pkt->size);
429 #endif /* CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER */
432 #if CONFIG_IMAGE2_DEMUXER
433 AVInputFormat ff_image2_demuxer = {
435 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
436 .priv_data_size = sizeof(VideoData),
437 .read_probe = read_probe,
438 .read_header = read_header,
439 .read_packet = read_packet,
440 .flags = AVFMT_NOFILE,
443 #if CONFIG_IMAGE2PIPE_DEMUXER
444 AVInputFormat ff_image2pipe_demuxer = {
445 .name = "image2pipe",
446 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
447 .priv_data_size = sizeof(VideoData),
448 .read_header = read_header,
449 .read_packet = read_packet,
454 #if CONFIG_IMAGE2_MUXER
455 AVOutputFormat ff_image2_muxer = {
457 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
458 .extensions = "bmp,dpx,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
459 "ppm,sgi,tga,tif,tiff,jp2",
460 .priv_data_size = sizeof(VideoData),
461 .video_codec = CODEC_ID_MJPEG,
462 .write_header = write_header,
463 .write_packet = write_packet,
464 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE
467 #if CONFIG_IMAGE2PIPE_MUXER
468 AVOutputFormat ff_image2pipe_muxer = {
469 .name = "image2pipe",
470 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
471 .priv_data_size = sizeof(VideoData),
472 .video_codec = CODEC_ID_MJPEG,
473 .write_header = write_header,
474 .write_packet = write_packet,
475 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS