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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <math.h>
#include <stdlib.h>
#include <gst/gst.h>
/*#undef HAVE_LIBMMX */
#ifdef HAVE_LIBMMX
#include "mmx.h"
#endif
void gst_colorspace_yuy2_to_i420(unsigned char *src, unsigned char *dest, guint width, guint height)
{
int size, i, j;
guchar *desty, *destr, *destb;
size = width * height;
desty = dest;
destr = desty + size;
destb = destr + (size>>2);
for (i=0; i<height; i++) {
for (j=0; j<(width>>1); j++) {
*desty++ = *src;
*desty++ = *(src+2);
if ((i&1) == 0) {
*destr++ = *(src+1);
*destb++ = *(src+3);
}
src += 4;
}
}
}
void gst_colorspace_i420_to_yv12(unsigned char *src, unsigned char *dest, guint width, guint height)
{
int size, i;
guint8 *destcr, *destcb;
size = width * height;
memcpy (dest, src, size);
src += size;
destcr = dest + size;
size >>=2;
destcb = destcr + size;
i=size;
while (i--)
*destcb++ = *src++;
i=size;
while (i--)
*destcr++ = *src++;
}
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