Skip to content
Fetching contributors…
Cannot retrieve contributors at this time
177 lines (162 sloc) 6.11 KB
/*
* Image format
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
* Copyright (c) 2004 Michael Niedermayer
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/intreadwrite.h"
#include "libavutil/avstring.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "avformat.h"
#include "avio_internal.h"
#include "internal.h"
#include "libavutil/opt.h"
typedef struct {
const AVClass *class; /**< Class for private options. */
int img_number;
int is_pipe;
int split_planes; /**< use independent file for each Y, U, V plane */
char path[1024];
int updatefirst;
} VideoMuxData;
static int write_header(AVFormatContext *s)
{
VideoMuxData *img = s->priv_data;
const char *str;
av_strlcpy(img->path, s->filename, sizeof(img->path));
/* find format */
if (s->oformat->flags & AVFMT_NOFILE)
img->is_pipe = 0;
else
img->is_pipe = 1;
str = strrchr(img->path, '.');
img->split_planes = str && !av_strcasecmp(str + 1, "y");
return 0;
}
static int write_packet(AVFormatContext *s, AVPacket *pkt)
{
VideoMuxData *img = s->priv_data;
AVIOContext *pb[3];
char filename[1024];
AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
int i;
if (!img->is_pipe) {
if (av_get_frame_filename(filename, sizeof(filename),
img->path, img->img_number) < 0 && img->img_number>1 && !img->updatefirst) {
av_log(s, AV_LOG_ERROR,
"Could not get frame filename number %d from pattern '%s'\n",
img->img_number, img->path);
return AVERROR(EINVAL);
}
for(i=0; i<3; i++){
if (avio_open2(&pb[i], filename, AVIO_FLAG_WRITE,
&s->interrupt_callback, NULL) < 0) {
av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename);
return AVERROR(EIO);
}
if(!img->split_planes)
break;
filename[ strlen(filename) - 1 ]= 'U' + i;
}
} else {
pb[0] = s->pb;
}
if(img->split_planes){
int ysize = codec->width * codec->height;
avio_write(pb[0], pkt->data , ysize);
avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
avio_write(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
avio_flush(pb[1]);
avio_flush(pb[2]);
avio_close(pb[1]);
avio_close(pb[2]);
}else{
if(ff_guess_image2_codec(s->filename) == AV_CODEC_ID_JPEG2000){
AVStream *st = s->streams[0];
if(st->codec->extradata_size > 8 &&
AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){
if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c'))
goto error;
avio_wb32(pb[0], 12);
ffio_wfourcc(pb[0], "jP ");
avio_wb32(pb[0], 0x0D0A870A); // signature
avio_wb32(pb[0], 20);
ffio_wfourcc(pb[0], "ftyp");
ffio_wfourcc(pb[0], "jp2 ");
avio_wb32(pb[0], 0);
ffio_wfourcc(pb[0], "jp2 ");
avio_write(pb[0], st->codec->extradata, st->codec->extradata_size);
}else if(pkt->size >= 8 && AV_RB32(pkt->data) == 0xFF4FFF51){
//jpeg2000 codestream
}else if(pkt->size < 8 ||
(!st->codec->extradata_size &&
AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature
error:
av_log(s, AV_LOG_ERROR, "malformed JPEG 2000 codestream %X\n", AV_RB32(pkt->data));
return -1;
}
}
avio_write(pb[0], pkt->data, pkt->size);
}
avio_flush(pb[0]);
if (!img->is_pipe) {
avio_close(pb[0]);
}
img->img_number++;
return 0;
}
#define OFFSET(x) offsetof(VideoMuxData, x)
#define ENC AV_OPT_FLAG_ENCODING_PARAM
static const AVOption muxoptions[] = {
{ "updatefirst", "", OFFSET(updatefirst), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, ENC },
{ "start_number", "first number in the sequence", OFFSET(img_number), AV_OPT_TYPE_INT, {.i64 = 1}, 1, INT_MAX, ENC },
{ NULL },
};
#if CONFIG_IMAGE2_MUXER
static const AVClass img2mux_class = {
.class_name = "image2 muxer",
.item_name = av_default_item_name,
.option = muxoptions,
.version = LIBAVUTIL_VERSION_INT,
};
AVOutputFormat ff_image2_muxer = {
.name = "image2",
.long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
.extensions = "bmp,dpx,jls,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
"ppm,sgi,tga,tif,tiff,jp2,j2c,xwd,sun,ras,rs,im1,im8,im24,"
"sunras,xbm",
.priv_data_size = sizeof(VideoMuxData),
.video_codec = AV_CODEC_ID_MJPEG,
.write_header = write_header,
.write_packet = write_packet,
.flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE,
.priv_class = &img2mux_class,
};
#endif
#if CONFIG_IMAGE2PIPE_MUXER
AVOutputFormat ff_image2pipe_muxer = {
.name = "image2pipe",
.long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
.priv_data_size = sizeof(VideoMuxData),
.video_codec = AV_CODEC_ID_MJPEG,
.write_header = write_header,
.write_packet = write_packet,
.flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS
};
#endif
Something went wrong with that request. Please try again.