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"
25 #include "libavutil/log.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/pixdesc.h"
28 #include "libavutil/parseutils.h"
30 #include "avio_internal.h"
35 const AVClass *class; /**< Class for private options. */
41 int split_planes; /**< use independent file for each Y, U, V plane */
43 char *pixel_format; /**< Set by a private option. */
44 char *video_size; /**< Set by a private option. */
45 char *framerate; /**< Set by a private option. */
53 static const IdStrMap img_tags[] = {
54 { CODEC_ID_MJPEG , "jpeg"},
55 { CODEC_ID_MJPEG , "jpg"},
56 { CODEC_ID_LJPEG , "ljpg"},
57 { CODEC_ID_PNG , "png"},
58 { CODEC_ID_PNG , "mng"},
59 { CODEC_ID_PPM , "ppm"},
60 { CODEC_ID_PPM , "pnm"},
61 { CODEC_ID_PGM , "pgm"},
62 { CODEC_ID_PGMYUV , "pgmyuv"},
63 { CODEC_ID_PBM , "pbm"},
64 { CODEC_ID_PAM , "pam"},
65 { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
66 { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
67 { CODEC_ID_MPEG4 , "mpg4-img"},
68 { CODEC_ID_FFV1 , "ffv1-img"},
69 { CODEC_ID_RAWVIDEO , "y"},
70 { CODEC_ID_RAWVIDEO , "raw"},
71 { CODEC_ID_BMP , "bmp"},
72 { CODEC_ID_GIF , "gif"},
73 { CODEC_ID_TARGA , "tga"},
74 { CODEC_ID_TIFF , "tiff"},
75 { CODEC_ID_TIFF , "tif"},
76 { CODEC_ID_SGI , "sgi"},
77 { CODEC_ID_PTX , "ptx"},
78 { CODEC_ID_PCX , "pcx"},
79 { CODEC_ID_SUNRAST , "sun"},
80 { CODEC_ID_SUNRAST , "ras"},
81 { CODEC_ID_SUNRAST , "rs"},
82 { CODEC_ID_SUNRAST , "im1"},
83 { CODEC_ID_SUNRAST , "im8"},
84 { CODEC_ID_SUNRAST , "im24"},
85 { CODEC_ID_SUNRAST , "sunras"},
86 { CODEC_ID_JPEG2000 , "j2k"},
87 { CODEC_ID_JPEG2000 , "jp2"},
88 { CODEC_ID_JPEG2000 , "jpc"},
89 { CODEC_ID_DPX , "dpx"},
90 { CODEC_ID_PICTOR , "pic"},
91 { CODEC_ID_NONE , NULL}
94 static const int sizes[][2] = {
106 static int infer_size(int *width_ptr, int *height_ptr, int size)
110 for(i=0;i<FF_ARRAY_ELEMS(sizes);i++) {
111 if ((sizes[i][0] * sizes[i][1]) == size) {
112 *width_ptr = sizes[i][0];
113 *height_ptr = sizes[i][1];
119 static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
121 str= strrchr(str, '.');
122 if(!str) return CODEC_ID_NONE;
126 if (!strcasecmp(str, tags->str))
131 return CODEC_ID_NONE;
134 /* return -1 if no image found */
135 static int find_image_range(int *pfirst_index, int *plast_index,
139 int range, last_index, range1, first_index;
141 /* find the first image */
142 for(first_index = 0; first_index < 5; first_index++) {
143 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
146 if (avio_check(buf, AVIO_FLAG_READ) > 0)
150 if (avio_check(buf, AVIO_FLAG_READ) > 0)
153 if (first_index == 5)
156 /* find the last image */
157 last_index = first_index;
165 if (av_get_frame_filename(buf, sizeof(buf), path,
166 last_index + range1) < 0)
168 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
171 /* just in case... */
172 if (range >= (1 << 30))
175 /* we are sure than image last_index + range exists */
180 *pfirst_index = first_index;
181 *plast_index = last_index;
188 static int read_probe(AVProbeData *p)
190 if (p->filename && av_str2id(img_tags, p->filename)) {
191 if (av_filename_number_test(p->filename))
192 return AVPROBE_SCORE_MAX;
194 return AVPROBE_SCORE_MAX/2;
199 enum CodecID ff_guess_image2_codec(const char *filename)
201 return av_str2id(img_tags, filename);
204 #if FF_API_GUESS_IMG2_CODEC
205 enum CodecID av_guess_image2_codec(const char *filename){
206 return av_str2id(img_tags, filename);
210 static int read_header(AVFormatContext *s1, AVFormatParameters *ap)
212 VideoData *s = s1->priv_data;
213 int first_index, last_index, ret = 0;
214 int width = 0, height = 0;
216 enum PixelFormat pix_fmt = PIX_FMT_NONE;
217 AVRational framerate;
219 s1->ctx_flags |= AVFMTCTX_NOHEADER;
221 st = av_new_stream(s1, 0);
223 return AVERROR(ENOMEM);
226 if (s->pixel_format && (pix_fmt = av_get_pix_fmt(s->pixel_format)) == PIX_FMT_NONE) {
227 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n", s->pixel_format);
228 return AVERROR(EINVAL);
230 if (s->video_size && (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) {
231 av_log(s, AV_LOG_ERROR, "Could not parse video size: %s.\n", s->video_size);
234 if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) {
235 av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s->framerate);
238 #if FF_API_FORMAT_PARAMETERS
239 if (ap->pix_fmt != PIX_FMT_NONE)
240 pix_fmt = ap->pix_fmt;
245 if (ap->time_base.num)
246 framerate = (AVRational){ap->time_base.den, ap->time_base.num};
249 av_strlcpy(s->path, s1->filename, sizeof(s->path));
254 if (s1->iformat->flags & AVFMT_NOFILE)
258 st->need_parsing = AVSTREAM_PARSE_FULL;
261 av_set_pts_info(st, 60, framerate.den, framerate.num);
263 if (width && height) {
264 st->codec->width = width;
265 st->codec->height = height;
269 if (find_image_range(&first_index, &last_index, s->path) < 0)
270 return AVERROR(ENOENT);
271 s->img_first = first_index;
272 s->img_last = last_index;
273 s->img_number = first_index;
274 /* compute duration */
276 st->duration = last_index - first_index + 1;
279 if(s1->video_codec_id){
280 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
281 st->codec->codec_id = s1->video_codec_id;
282 }else if(s1->audio_codec_id){
283 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
284 st->codec->codec_id = s1->audio_codec_id;
286 const char *str= strrchr(s->path, '.');
287 s->split_planes = str && !strcasecmp(str + 1, "y");
288 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
289 st->codec->codec_id = av_str2id(img_tags, s->path);
291 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pix_fmt != PIX_FMT_NONE)
292 st->codec->pix_fmt = pix_fmt;
297 static int read_packet(AVFormatContext *s1, AVPacket *pkt)
299 VideoData *s = s1->priv_data;
302 int size[3]={0}, ret[3]={0};
304 AVCodecContext *codec= s1->streams[0]->codec;
307 /* loop over input */
308 if (s1->loop_input && s->img_number > s->img_last) {
309 s->img_number = s->img_first;
311 if (s->img_number > s->img_last)
313 if (av_get_frame_filename(filename, sizeof(filename),
314 s->path, s->img_number)<0 && s->img_number > 1)
317 if (avio_open(&f[i], filename, AVIO_FLAG_READ) < 0) {
320 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename);
323 size[i]= avio_size(f[i]);
327 filename[ strlen(filename) - 1 ]= 'U' + i;
330 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
331 infer_size(&codec->width, &codec->height, size[0]);
339 av_new_packet(pkt, size[0] + size[1] + size[2]);
340 pkt->stream_index = 0;
341 pkt->flags |= AV_PKT_FLAG_KEY;
346 ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]);
354 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
356 return AVERROR(EIO); /* signal EOF */
364 #if CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER
365 /******************************************************/
368 static int write_header(AVFormatContext *s)
370 VideoData *img = s->priv_data;
374 av_strlcpy(img->path, s->filename, sizeof(img->path));
377 if (s->oformat->flags & AVFMT_NOFILE)
382 str = strrchr(img->path, '.');
383 img->split_planes = str && !strcasecmp(str + 1, "y");
387 static int write_packet(AVFormatContext *s, AVPacket *pkt)
389 VideoData *img = s->priv_data;
392 AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
396 if (av_get_frame_filename(filename, sizeof(filename),
397 img->path, img->img_number) < 0 && img->img_number>1) {
398 av_log(s, AV_LOG_ERROR,
399 "Could not get frame filename number %d from pattern '%s'\n",
400 img->img_number, img->path);
401 return AVERROR(EINVAL);
404 if (avio_open(&pb[i], filename, AVIO_FLAG_WRITE) < 0) {
405 av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename);
409 if(!img->split_planes)
411 filename[ strlen(filename) - 1 ]= 'U' + i;
417 if(img->split_planes){
418 int ysize = codec->width * codec->height;
419 avio_write(pb[0], pkt->data , ysize);
420 avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
421 avio_write(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
427 if(av_str2id(img_tags, s->filename) == CODEC_ID_JPEG2000){
428 AVStream *st = s->streams[0];
429 if(st->codec->extradata_size > 8 &&
430 AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){
431 if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c'))
433 avio_wb32(pb[0], 12);
434 ffio_wfourcc(pb[0], "jP ");
435 avio_wb32(pb[0], 0x0D0A870A); // signature
436 avio_wb32(pb[0], 20);
437 ffio_wfourcc(pb[0], "ftyp");
438 ffio_wfourcc(pb[0], "jp2 ");
440 ffio_wfourcc(pb[0], "jp2 ");
441 avio_write(pb[0], st->codec->extradata, st->codec->extradata_size);
442 }else if(pkt->size < 8 ||
443 (!st->codec->extradata_size &&
444 AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature
446 av_log(s, AV_LOG_ERROR, "malformated jpeg2000 codestream\n");
450 avio_write(pb[0], pkt->data, pkt->size);
461 #endif /* CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER */
463 #define OFFSET(x) offsetof(VideoData, x)
464 #define DEC AV_OPT_FLAG_DECODING_PARAM
465 static const AVOption options[] = {
466 { "pixel_format", "", OFFSET(pixel_format), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
467 { "video_size", "", OFFSET(video_size), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
468 { "framerate", "", OFFSET(framerate), FF_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
472 static const AVClass img2_class = {
473 .class_name = "image2 demuxer",
474 .item_name = av_default_item_name,
476 .version = LIBAVUTIL_VERSION_INT,
480 #if CONFIG_IMAGE2_DEMUXER
481 AVInputFormat ff_image2_demuxer = {
483 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
484 .priv_data_size = sizeof(VideoData),
485 .read_probe = read_probe,
486 .read_header = read_header,
487 .read_packet = read_packet,
488 .flags = AVFMT_NOFILE,
489 .priv_class = &img2_class,
492 #if CONFIG_IMAGE2PIPE_DEMUXER
493 AVInputFormat ff_image2pipe_demuxer = {
494 .name = "image2pipe",
495 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
496 .priv_data_size = sizeof(VideoData),
497 .read_header = read_header,
498 .read_packet = read_packet,
499 .priv_class = &img2_class,
504 #if CONFIG_IMAGE2_MUXER
505 AVOutputFormat ff_image2_muxer = {
507 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
508 .extensions = "bmp,dpx,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
509 "ppm,sgi,tga,tif,tiff,jp2",
510 .priv_data_size = sizeof(VideoData),
511 .video_codec = CODEC_ID_MJPEG,
512 .write_header = write_header,
513 .write_packet = write_packet,
514 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE
517 #if CONFIG_IMAGE2PIPE_MUXER
518 AVOutputFormat ff_image2pipe_muxer = {
519 .name = "image2pipe",
520 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
521 .priv_data_size = sizeof(VideoData),
522 .video_codec = CODEC_ID_MJPEG,
523 .write_header = write_header,
524 .write_packet = write_packet,
525 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS