3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 * Copyright (c) 2004 Michael Niedermayer
6 * This file is part of Libav.
8 * Libav 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 * Libav 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 Libav; 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"
34 const AVClass *class; /**< Class for private options. */
41 char *pixel_format; /**< Set by a private option. */
42 char *video_size; /**< Set by a private option. */
43 char *framerate; /**< Set by a private option. */
52 static const IdStrMap img_tags[] = {
53 { CODEC_ID_MJPEG , "jpeg"},
54 { CODEC_ID_MJPEG , "jpg"},
55 { CODEC_ID_LJPEG , "ljpg"},
56 { CODEC_ID_PNG , "png"},
57 { CODEC_ID_PNG , "mng"},
58 { CODEC_ID_PPM , "ppm"},
59 { CODEC_ID_PPM , "pnm"},
60 { CODEC_ID_PGM , "pgm"},
61 { CODEC_ID_PGMYUV , "pgmyuv"},
62 { CODEC_ID_PBM , "pbm"},
63 { CODEC_ID_PAM , "pam"},
64 { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
65 { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
66 { CODEC_ID_MPEG4 , "mpg4-img"},
67 { CODEC_ID_FFV1 , "ffv1-img"},
68 { CODEC_ID_RAWVIDEO , "y"},
69 { CODEC_ID_BMP , "bmp"},
70 { CODEC_ID_GIF , "gif"},
71 { CODEC_ID_TARGA , "tga"},
72 { CODEC_ID_TIFF , "tiff"},
73 { CODEC_ID_TIFF , "tif"},
74 { CODEC_ID_SGI , "sgi"},
75 { CODEC_ID_PTX , "ptx"},
76 { CODEC_ID_PCX , "pcx"},
77 { CODEC_ID_SUNRAST , "sun"},
78 { CODEC_ID_SUNRAST , "ras"},
79 { CODEC_ID_SUNRAST , "rs"},
80 { CODEC_ID_SUNRAST , "im1"},
81 { CODEC_ID_SUNRAST , "im8"},
82 { CODEC_ID_SUNRAST , "im24"},
83 { CODEC_ID_SUNRAST , "sunras"},
84 { CODEC_ID_JPEG2000 , "jp2"},
85 { CODEC_ID_JPEG2000 , "jpc"},
86 { CODEC_ID_DPX , "dpx"},
87 { CODEC_ID_PICTOR , "pic"},
88 { CODEC_ID_XWD , "xwd"},
89 { CODEC_ID_NONE , NULL}
92 static const int sizes[][2] = {
104 static int infer_size(int *width_ptr, int *height_ptr, int size)
108 for(i=0;i<FF_ARRAY_ELEMS(sizes);i++) {
109 if ((sizes[i][0] * sizes[i][1]) == size) {
110 *width_ptr = sizes[i][0];
111 *height_ptr = sizes[i][1];
117 static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
119 str= strrchr(str, '.');
120 if(!str) return CODEC_ID_NONE;
124 if (!av_strcasecmp(str, tags->str))
129 return CODEC_ID_NONE;
132 /* return -1 if no image found */
133 static int find_image_range(int *pfirst_index, int *plast_index,
137 int range, last_index, range1, first_index;
139 /* find the first image */
140 for(first_index = 0; first_index < 5; first_index++) {
141 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
144 if (avio_check(buf, AVIO_FLAG_READ) > 0)
148 if (avio_check(buf, AVIO_FLAG_READ) > 0)
151 if (first_index == 5)
154 /* find the last image */
155 last_index = first_index;
163 if (av_get_frame_filename(buf, sizeof(buf), path,
164 last_index + range1) < 0)
166 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
169 /* just in case... */
170 if (range >= (1 << 30))
173 /* we are sure than image last_index + range exists */
178 *pfirst_index = first_index;
179 *plast_index = last_index;
186 static int read_probe(AVProbeData *p)
188 if (p->filename && av_str2id(img_tags, p->filename)) {
189 if (av_filename_number_test(p->filename))
190 return AVPROBE_SCORE_MAX;
192 return AVPROBE_SCORE_MAX/2;
197 enum CodecID ff_guess_image2_codec(const char *filename)
199 return av_str2id(img_tags, filename);
202 static int read_header(AVFormatContext *s1)
204 VideoData *s = s1->priv_data;
205 int first_index, last_index, ret = 0;
206 int width = 0, height = 0;
208 enum PixelFormat pix_fmt = PIX_FMT_NONE;
209 AVRational framerate;
211 s1->ctx_flags |= AVFMTCTX_NOHEADER;
213 st = avformat_new_stream(s1, NULL);
215 return AVERROR(ENOMEM);
218 if (s->pixel_format && (pix_fmt = av_get_pix_fmt(s->pixel_format)) == PIX_FMT_NONE) {
219 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n", s->pixel_format);
220 return AVERROR(EINVAL);
222 if (s->video_size && (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) {
223 av_log(s, AV_LOG_ERROR, "Could not parse video size: %s.\n", s->video_size);
226 if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) {
227 av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s->framerate);
231 av_strlcpy(s->path, s1->filename, sizeof(s->path));
236 if (s1->iformat->flags & AVFMT_NOFILE)
240 st->need_parsing = AVSTREAM_PARSE_FULL;
243 avpriv_set_pts_info(st, 60, framerate.den, framerate.num);
245 if (width && height) {
246 st->codec->width = width;
247 st->codec->height = height;
251 if (find_image_range(&first_index, &last_index, s->path) < 0)
252 return AVERROR(ENOENT);
253 s->img_first = first_index;
254 s->img_last = last_index;
255 s->img_number = first_index;
256 /* compute duration */
258 st->duration = last_index - first_index + 1;
261 if(s1->video_codec_id){
262 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
263 st->codec->codec_id = s1->video_codec_id;
264 }else if(s1->audio_codec_id){
265 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
266 st->codec->codec_id = s1->audio_codec_id;
268 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
269 st->codec->codec_id = av_str2id(img_tags, s->path);
271 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pix_fmt != PIX_FMT_NONE)
272 st->codec->pix_fmt = pix_fmt;
277 static int read_packet(AVFormatContext *s1, AVPacket *pkt)
279 VideoData *s = s1->priv_data;
282 int size[3]={0}, ret[3]={0};
284 AVCodecContext *codec= s1->streams[0]->codec;
287 /* loop over input */
288 if (s->loop && s->img_number > s->img_last) {
289 s->img_number = s->img_first;
291 if (s->img_number > s->img_last)
293 if (av_get_frame_filename(filename, sizeof(filename),
294 s->path, s->img_number)<0 && s->img_number > 1)
297 if (avio_open2(&f[i], filename, AVIO_FLAG_READ,
298 &s1->interrupt_callback, NULL) < 0) {
301 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename);
304 size[i]= avio_size(f[i]);
306 if(codec->codec_id != CODEC_ID_RAWVIDEO)
308 filename[ strlen(filename) - 1 ]= 'U' + i;
311 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
312 infer_size(&codec->width, &codec->height, size[0]);
315 if (f[0]->eof_reached)
320 av_new_packet(pkt, size[0] + size[1] + size[2]);
321 pkt->stream_index = 0;
322 pkt->flags |= AV_PKT_FLAG_KEY;
327 ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]);
335 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
337 return AVERROR(EIO); /* signal EOF */
345 #if CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER
346 /******************************************************/
349 static int write_header(AVFormatContext *s)
351 VideoData *img = s->priv_data;
354 av_strlcpy(img->path, s->filename, sizeof(img->path));
357 if (s->oformat->flags & AVFMT_NOFILE)
365 static int write_packet(AVFormatContext *s, AVPacket *pkt)
367 VideoData *img = s->priv_data;
370 AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
374 if (av_get_frame_filename(filename, sizeof(filename),
375 img->path, img->img_number) < 0 && img->img_number>1) {
376 av_log(s, AV_LOG_ERROR,
377 "Could not get frame filename number %d from pattern '%s'\n",
378 img->img_number, img->path);
382 if (avio_open2(&pb[i], filename, AVIO_FLAG_WRITE,
383 &s->interrupt_callback, NULL) < 0) {
384 av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename);
388 if(codec->codec_id != CODEC_ID_RAWVIDEO)
390 filename[ strlen(filename) - 1 ]= 'U' + i;
396 if(codec->codec_id == CODEC_ID_RAWVIDEO){
397 int ysize = codec->width * codec->height;
398 avio_write(pb[0], pkt->data , ysize);
399 avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
400 avio_write(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
406 if(av_str2id(img_tags, s->filename) == CODEC_ID_JPEG2000){
407 AVStream *st = s->streams[0];
408 if(st->codec->extradata_size > 8 &&
409 AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){
410 if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c'))
412 avio_wb32(pb[0], 12);
413 ffio_wfourcc(pb[0], "jP ");
414 avio_wb32(pb[0], 0x0D0A870A); // signature
415 avio_wb32(pb[0], 20);
416 ffio_wfourcc(pb[0], "ftyp");
417 ffio_wfourcc(pb[0], "jp2 ");
419 ffio_wfourcc(pb[0], "jp2 ");
420 avio_write(pb[0], st->codec->extradata, st->codec->extradata_size);
421 }else if(pkt->size < 8 ||
422 (!st->codec->extradata_size &&
423 AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature
425 av_log(s, AV_LOG_ERROR, "malformed JPEG 2000 codestream\n");
429 avio_write(pb[0], pkt->data, pkt->size);
440 #endif /* CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER */
442 #define OFFSET(x) offsetof(VideoData, x)
443 #define DEC AV_OPT_FLAG_DECODING_PARAM
444 static const AVOption options[] = {
445 { "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
446 { "video_size", "", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
447 { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
448 { "loop", "", OFFSET(loop), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 1, DEC },
453 #if CONFIG_IMAGE2_DEMUXER
454 static const AVClass img2_class = {
455 .class_name = "image2 demuxer",
456 .item_name = av_default_item_name,
458 .version = LIBAVUTIL_VERSION_INT,
460 AVInputFormat ff_image2_demuxer = {
462 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
463 .priv_data_size = sizeof(VideoData),
464 .read_probe = read_probe,
465 .read_header = read_header,
466 .read_packet = read_packet,
467 .flags = AVFMT_NOFILE,
468 .priv_class = &img2_class,
471 #if CONFIG_IMAGE2PIPE_DEMUXER
472 static const AVClass img2pipe_class = {
473 .class_name = "image2pipe demuxer",
474 .item_name = av_default_item_name,
476 .version = LIBAVUTIL_VERSION_INT,
478 AVInputFormat ff_image2pipe_demuxer = {
479 .name = "image2pipe",
480 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
481 .priv_data_size = sizeof(VideoData),
482 .read_header = read_header,
483 .read_packet = read_packet,
484 .priv_class = &img2pipe_class,
489 #if CONFIG_IMAGE2_MUXER
490 AVOutputFormat ff_image2_muxer = {
492 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
493 .extensions = "bmp,dpx,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
494 "ppm,sgi,tga,tif,tiff,jp2,xwd",
495 .priv_data_size = sizeof(VideoData),
496 .video_codec = CODEC_ID_MJPEG,
497 .write_header = write_header,
498 .write_packet = write_packet,
499 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE
502 #if CONFIG_IMAGE2PIPE_MUXER
503 AVOutputFormat ff_image2pipe_muxer = {
504 .name = "image2pipe",
505 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
506 .priv_data_size = sizeof(VideoData),
507 .video_codec = CODEC_ID_MJPEG,
508 .write_header = write_header,
509 .write_packet = write_packet,
510 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS