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"
35 const AVClass *class; /**< Class for private options. */
42 char *pixel_format; /**< Set by a private option. */
43 char *video_size; /**< Set by a private option. */
44 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_BMP , "bmp"},
71 { CODEC_ID_GIF , "gif"},
72 { CODEC_ID_TARGA , "tga"},
73 { CODEC_ID_TIFF , "tiff"},
74 { CODEC_ID_TIFF , "tif"},
75 { CODEC_ID_SGI , "sgi"},
76 { CODEC_ID_PTX , "ptx"},
77 { CODEC_ID_PCX , "pcx"},
78 { CODEC_ID_SUNRAST , "sun"},
79 { CODEC_ID_SUNRAST , "ras"},
80 { CODEC_ID_SUNRAST , "rs"},
81 { CODEC_ID_SUNRAST , "im1"},
82 { CODEC_ID_SUNRAST , "im8"},
83 { CODEC_ID_SUNRAST , "im24"},
84 { CODEC_ID_SUNRAST , "sunras"},
85 { CODEC_ID_JPEG2000 , "jp2"},
86 { CODEC_ID_JPEG2000 , "jpc"},
87 { CODEC_ID_DPX , "dpx"},
88 { CODEC_ID_PICTOR , "pic"},
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 (!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 #if FF_API_GUESS_IMG2_CODEC
203 enum CodecID av_guess_image2_codec(const char *filename){
204 return av_str2id(img_tags, filename);
208 static int read_header(AVFormatContext *s1, AVFormatParameters *ap)
210 VideoData *s = s1->priv_data;
211 int first_index, last_index, ret = 0;
212 int width = 0, height = 0;
214 enum PixelFormat pix_fmt = PIX_FMT_NONE;
215 AVRational framerate;
217 s1->ctx_flags |= AVFMTCTX_NOHEADER;
219 st = avformat_new_stream(s1, NULL);
221 return AVERROR(ENOMEM);
224 if (s->pixel_format && (pix_fmt = av_get_pix_fmt(s->pixel_format)) == PIX_FMT_NONE) {
225 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n", s->pixel_format);
226 return AVERROR(EINVAL);
228 if (s->video_size && (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) {
229 av_log(s, AV_LOG_ERROR, "Could not parse video size: %s.\n", s->video_size);
232 if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) {
233 av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s->framerate);
237 #if FF_API_LOOP_INPUT
239 s->loop = s1->loop_input;
242 av_strlcpy(s->path, s1->filename, sizeof(s->path));
247 if (s1->iformat->flags & AVFMT_NOFILE)
251 st->need_parsing = AVSTREAM_PARSE_FULL;
254 av_set_pts_info(st, 60, framerate.den, framerate.num);
256 if (width && height) {
257 st->codec->width = width;
258 st->codec->height = height;
262 if (find_image_range(&first_index, &last_index, s->path) < 0)
263 return AVERROR(ENOENT);
264 s->img_first = first_index;
265 s->img_last = last_index;
266 s->img_number = first_index;
267 /* compute duration */
269 st->duration = last_index - first_index + 1;
272 if(s1->video_codec_id){
273 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
274 st->codec->codec_id = s1->video_codec_id;
275 }else if(s1->audio_codec_id){
276 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
277 st->codec->codec_id = s1->audio_codec_id;
279 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
280 st->codec->codec_id = av_str2id(img_tags, s->path);
282 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pix_fmt != PIX_FMT_NONE)
283 st->codec->pix_fmt = pix_fmt;
288 static int read_packet(AVFormatContext *s1, AVPacket *pkt)
290 VideoData *s = s1->priv_data;
293 int size[3]={0}, ret[3]={0};
295 AVCodecContext *codec= s1->streams[0]->codec;
298 /* loop over input */
299 if (s->loop && s->img_number > s->img_last) {
300 s->img_number = s->img_first;
302 if (s->img_number > s->img_last)
304 if (av_get_frame_filename(filename, sizeof(filename),
305 s->path, s->img_number)<0 && s->img_number > 1)
308 if (avio_open(&f[i], filename, AVIO_FLAG_READ) < 0) {
311 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename);
314 size[i]= avio_size(f[i]);
316 if(codec->codec_id != CODEC_ID_RAWVIDEO)
318 filename[ strlen(filename) - 1 ]= 'U' + i;
321 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
322 infer_size(&codec->width, &codec->height, size[0]);
325 if (f[0]->eof_reached)
330 av_new_packet(pkt, size[0] + size[1] + size[2]);
331 pkt->stream_index = 0;
332 pkt->flags |= AV_PKT_FLAG_KEY;
337 ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]);
345 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
347 return AVERROR(EIO); /* signal EOF */
355 #if CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER
356 /******************************************************/
359 static int write_header(AVFormatContext *s)
361 VideoData *img = s->priv_data;
364 av_strlcpy(img->path, s->filename, sizeof(img->path));
367 if (s->oformat->flags & AVFMT_NOFILE)
375 static int write_packet(AVFormatContext *s, AVPacket *pkt)
377 VideoData *img = s->priv_data;
380 AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
384 if (av_get_frame_filename(filename, sizeof(filename),
385 img->path, img->img_number) < 0 && img->img_number>1) {
386 av_log(s, AV_LOG_ERROR,
387 "Could not get frame filename number %d from pattern '%s'\n",
388 img->img_number, img->path);
392 if (avio_open(&pb[i], filename, AVIO_FLAG_WRITE) < 0) {
393 av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename);
397 if(codec->codec_id != CODEC_ID_RAWVIDEO)
399 filename[ strlen(filename) - 1 ]= 'U' + i;
405 if(codec->codec_id == CODEC_ID_RAWVIDEO){
406 int ysize = codec->width * codec->height;
407 avio_write(pb[0], pkt->data , ysize);
408 avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
409 avio_write(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
415 if(av_str2id(img_tags, s->filename) == CODEC_ID_JPEG2000){
416 AVStream *st = s->streams[0];
417 if(st->codec->extradata_size > 8 &&
418 AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){
419 if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c'))
421 avio_wb32(pb[0], 12);
422 ffio_wfourcc(pb[0], "jP ");
423 avio_wb32(pb[0], 0x0D0A870A); // signature
424 avio_wb32(pb[0], 20);
425 ffio_wfourcc(pb[0], "ftyp");
426 ffio_wfourcc(pb[0], "jp2 ");
428 ffio_wfourcc(pb[0], "jp2 ");
429 avio_write(pb[0], st->codec->extradata, st->codec->extradata_size);
430 }else if(pkt->size < 8 ||
431 (!st->codec->extradata_size &&
432 AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature
434 av_log(s, AV_LOG_ERROR, "malformated jpeg2000 codestream\n");
438 avio_write(pb[0], pkt->data, pkt->size);
449 #endif /* CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER */
451 #define OFFSET(x) offsetof(VideoData, x)
452 #define DEC AV_OPT_FLAG_DECODING_PARAM
453 static const AVOption options[] = {
454 { "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
455 { "video_size", "", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
456 { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
457 { "loop", "", OFFSET(loop), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 1, DEC },
462 #if CONFIG_IMAGE2_DEMUXER
463 static const AVClass img2_class = {
464 .class_name = "image2 demuxer",
465 .item_name = av_default_item_name,
467 .version = LIBAVUTIL_VERSION_INT,
469 AVInputFormat ff_image2_demuxer = {
471 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
472 .priv_data_size = sizeof(VideoData),
473 .read_probe = read_probe,
474 .read_header = read_header,
475 .read_packet = read_packet,
476 .flags = AVFMT_NOFILE,
477 .priv_class = &img2_class,
480 #if CONFIG_IMAGE2PIPE_DEMUXER
481 static const AVClass img2pipe_class = {
482 .class_name = "image2pipe demuxer",
483 .item_name = av_default_item_name,
485 .version = LIBAVUTIL_VERSION_INT,
487 AVInputFormat ff_image2pipe_demuxer = {
488 .name = "image2pipe",
489 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
490 .priv_data_size = sizeof(VideoData),
491 .read_header = read_header,
492 .read_packet = read_packet,
493 .priv_class = &img2pipe_class,
498 #if CONFIG_IMAGE2_MUXER
499 AVOutputFormat ff_image2_muxer = {
501 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
502 .extensions = "bmp,dpx,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
503 "ppm,sgi,tga,tif,tiff,jp2",
504 .priv_data_size = sizeof(VideoData),
505 .video_codec = CODEC_ID_MJPEG,
506 .write_header = write_header,
507 .write_packet = write_packet,
508 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE
511 #if CONFIG_IMAGE2PIPE_MUXER
512 AVOutputFormat ff_image2pipe_muxer = {
513 .name = "image2pipe",
514 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
515 .priv_data_size = sizeof(VideoData),
516 .video_codec = CODEC_ID_MJPEG,
517 .write_header = write_header,
518 .write_packet = write_packet,
519 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS