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yuvfieldseperate.cpp
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yuvfieldseperate.cpp
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/*
* yuv field seperator
* Mark Heath
* http://github.com/silicontrip/lavtools/
*
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <yuv4mpeg.h>
#include <mpegconsts.h>
#include <string.h>
#include "libav2yuv/Libyuv.h"
#include "libav2yuv/AVException.h"
int main (int argc, char **argv)
{
Libyuv iyuv,oyuv;
int y;
iyuv.setExtensions(1);
oyuv.setExtensions(1);
try {
iyuv.readHeader();
iyuv.dumpInfo();
// copy from in to out.
oyuv.copyStreamInfo(&iyuv);
oyuv.dumpInfo();
oyuv.writeHeader();
iyuv.allocFrameData();
oyuv.allocFrameData();
int width = iyuv.getWidth();
int cwidth = iyuv.getChromaWidth();
while(1) {
iyuv.read();
for (y=0; y<iyuv.getHeight();y++)
{
int ny = (y >> 1) + (iyuv.getHeight() >> 1) * (y % 2);
// std::cerr << "in: " << y << " out: " << ny << "\n";
memcpy (&(oyuv.getYUVFrame()[0][ny*width]),
&(iyuv.getYUVFrame()[0][y*width]),width);
// do chroma
if (y < iyuv.getChromaHeight())
{
int ny = (y >> 1) + (iyuv.getChromaHeight() >> 1) * (y % 2);
memcpy (&oyuv.getYUVFrame()[1][ny*cwidth],
&iyuv.getYUVFrame()[1][y*cwidth],cwidth);
memcpy (&oyuv.getYUVFrame()[2][ny*cwidth],
&iyuv.getYUVFrame()[2][y*cwidth],cwidth);
}
}
oyuv.write();
}
} catch (AVException *e) {
std::cerr << "ERROR occurred: " << e->getMessage() << "\n";
}
}