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_NONE , NULL}
91 static const int sizes[][2] = {
103 static int infer_size(int *width_ptr, int *height_ptr, int size)
107 for(i=0;i<FF_ARRAY_ELEMS(sizes);i++) {
108 if ((sizes[i][0] * sizes[i][1]) == size) {
109 *width_ptr = sizes[i][0];
110 *height_ptr = sizes[i][1];
116 static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
118 str= strrchr(str, '.');
119 if(!str) return CODEC_ID_NONE;
123 if (!av_strcasecmp(str, tags->str))
128 return CODEC_ID_NONE;
131 /* return -1 if no image found */
132 static int find_image_range(int *pfirst_index, int *plast_index,
136 int range, last_index, range1, first_index;
138 /* find the first image */
139 for(first_index = 0; first_index < 5; first_index++) {
140 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
143 if (avio_check(buf, AVIO_FLAG_READ) > 0)
147 if (avio_check(buf, AVIO_FLAG_READ) > 0)
150 if (first_index == 5)
153 /* find the last image */
154 last_index = first_index;
162 if (av_get_frame_filename(buf, sizeof(buf), path,
163 last_index + range1) < 0)
165 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
168 /* just in case... */
169 if (range >= (1 << 30))
172 /* we are sure than image last_index + range exists */
177 *pfirst_index = first_index;
178 *plast_index = last_index;
185 static int read_probe(AVProbeData *p)
187 if (p->filename && av_str2id(img_tags, p->filename)) {
188 if (av_filename_number_test(p->filename))
189 return AVPROBE_SCORE_MAX;
191 return AVPROBE_SCORE_MAX/2;
196 enum CodecID ff_guess_image2_codec(const char *filename)
198 return av_str2id(img_tags, filename);
201 #if FF_API_GUESS_IMG2_CODEC
202 enum CodecID av_guess_image2_codec(const char *filename){
203 return av_str2id(img_tags, filename);
207 static int read_header(AVFormatContext *s1, AVFormatParameters *ap)
209 VideoData *s = s1->priv_data;
210 int first_index, last_index, ret = 0;
211 int width = 0, height = 0;
213 enum PixelFormat pix_fmt = PIX_FMT_NONE;
214 AVRational framerate;
216 s1->ctx_flags |= AVFMTCTX_NOHEADER;
218 st = avformat_new_stream(s1, NULL);
220 return AVERROR(ENOMEM);
223 if (s->pixel_format && (pix_fmt = av_get_pix_fmt(s->pixel_format)) == PIX_FMT_NONE) {
224 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n", s->pixel_format);
225 return AVERROR(EINVAL);
227 if (s->video_size && (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) {
228 av_log(s, AV_LOG_ERROR, "Could not parse video size: %s.\n", s->video_size);
231 if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) {
232 av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s->framerate);
236 #if FF_API_LOOP_INPUT
238 s->loop = s1->loop_input;
241 av_strlcpy(s->path, s1->filename, sizeof(s->path));
246 if (s1->iformat->flags & AVFMT_NOFILE)
250 st->need_parsing = AVSTREAM_PARSE_FULL;
253 av_set_pts_info(st, 60, framerate.den, framerate.num);
255 if (width && height) {
256 st->codec->width = width;
257 st->codec->height = height;
261 if (find_image_range(&first_index, &last_index, s->path) < 0)
262 return AVERROR(ENOENT);
263 s->img_first = first_index;
264 s->img_last = last_index;
265 s->img_number = first_index;
266 /* compute duration */
268 st->duration = last_index - first_index + 1;
271 if(s1->video_codec_id){
272 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
273 st->codec->codec_id = s1->video_codec_id;
274 }else if(s1->audio_codec_id){
275 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
276 st->codec->codec_id = s1->audio_codec_id;
278 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
279 st->codec->codec_id = av_str2id(img_tags, s->path);
281 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pix_fmt != PIX_FMT_NONE)
282 st->codec->pix_fmt = pix_fmt;
287 static int read_packet(AVFormatContext *s1, AVPacket *pkt)
289 VideoData *s = s1->priv_data;
292 int size[3]={0}, ret[3]={0};
294 AVCodecContext *codec= s1->streams[0]->codec;
297 /* loop over input */
298 if (s->loop && s->img_number > s->img_last) {
299 s->img_number = s->img_first;
301 if (s->img_number > s->img_last)
303 if (av_get_frame_filename(filename, sizeof(filename),
304 s->path, s->img_number)<0 && s->img_number > 1)
307 if (avio_open2(&f[i], filename, AVIO_FLAG_READ,
308 &s1->interrupt_callback, NULL) < 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_open2(&pb[i], filename, AVIO_FLAG_WRITE,
393 &s->interrupt_callback, NULL) < 0) {
394 av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename);
398 if(codec->codec_id != CODEC_ID_RAWVIDEO)
400 filename[ strlen(filename) - 1 ]= 'U' + i;
406 if(codec->codec_id == CODEC_ID_RAWVIDEO){
407 int ysize = codec->width * codec->height;
408 avio_write(pb[0], pkt->data , ysize);
409 avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
410 avio_write(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
416 if(av_str2id(img_tags, s->filename) == CODEC_ID_JPEG2000){
417 AVStream *st = s->streams[0];
418 if(st->codec->extradata_size > 8 &&
419 AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){
420 if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c'))
422 avio_wb32(pb[0], 12);
423 ffio_wfourcc(pb[0], "jP ");
424 avio_wb32(pb[0], 0x0D0A870A); // signature
425 avio_wb32(pb[0], 20);
426 ffio_wfourcc(pb[0], "ftyp");
427 ffio_wfourcc(pb[0], "jp2 ");
429 ffio_wfourcc(pb[0], "jp2 ");
430 avio_write(pb[0], st->codec->extradata, st->codec->extradata_size);
431 }else if(pkt->size < 8 ||
432 (!st->codec->extradata_size &&
433 AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature
435 av_log(s, AV_LOG_ERROR, "malformated jpeg2000 codestream\n");
439 avio_write(pb[0], pkt->data, pkt->size);
450 #endif /* CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER */
452 #define OFFSET(x) offsetof(VideoData, x)
453 #define DEC AV_OPT_FLAG_DECODING_PARAM
454 static const AVOption options[] = {
455 { "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
456 { "video_size", "", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
457 { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
458 { "loop", "", OFFSET(loop), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 1, DEC },
463 #if CONFIG_IMAGE2_DEMUXER
464 static const AVClass img2_class = {
465 .class_name = "image2 demuxer",
466 .item_name = av_default_item_name,
468 .version = LIBAVUTIL_VERSION_INT,
470 AVInputFormat ff_image2_demuxer = {
472 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
473 .priv_data_size = sizeof(VideoData),
474 .read_probe = read_probe,
475 .read_header = read_header,
476 .read_packet = read_packet,
477 .flags = AVFMT_NOFILE,
478 .priv_class = &img2_class,
481 #if CONFIG_IMAGE2PIPE_DEMUXER
482 static const AVClass img2pipe_class = {
483 .class_name = "image2pipe demuxer",
484 .item_name = av_default_item_name,
486 .version = LIBAVUTIL_VERSION_INT,
488 AVInputFormat ff_image2pipe_demuxer = {
489 .name = "image2pipe",
490 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
491 .priv_data_size = sizeof(VideoData),
492 .read_header = read_header,
493 .read_packet = read_packet,
494 .priv_class = &img2pipe_class,
499 #if CONFIG_IMAGE2_MUXER
500 AVOutputFormat ff_image2_muxer = {
502 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
503 .extensions = "bmp,dpx,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
504 "ppm,sgi,tga,tif,tiff,jp2",
505 .priv_data_size = sizeof(VideoData),
506 .video_codec = CODEC_ID_MJPEG,
507 .write_header = write_header,
508 .write_packet = write_packet,
509 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE
512 #if CONFIG_IMAGE2PIPE_MUXER
513 AVOutputFormat ff_image2pipe_muxer = {
514 .name = "image2pipe",
515 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
516 .priv_data_size = sizeof(VideoData),
517 .video_codec = CODEC_ID_MJPEG,
518 .write_header = write_header,
519 .write_packet = write_packet,
520 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS