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//
// interlace - deinterlacing through pixel / line repitition
//
// written by Olaf Matthes <olaf.matthes@gmx.de>
//
// 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// usage: interlace <line> [ with line = 0 or 1 ]
//
#include <stdio.h>
#include <string.h>
#include "plugin.h"
void perform_effect(struct frame f, struct args a)
{
printf("Using interlace as effect does nothing!\n");
}
void perform_copy(struct frame f1, struct frame f2, struct args a)
{
short h, w, line = 0;
byte pixelsize = f1.pixelformat/8;
pixel16 *p16, *c16;
pixel24 *p24, *c24;
pixel32 *p32, *c32;
char *t;
// get params
if(a.s)
{
line = atoi(a.s);
} // else keep 0
printf("interlace: %d\n", line);
w = f1.width<f2.width ? f1.width : f2.width;
h = f1.height<f2.height ? f1.height : f2.height;
h -= line;
switch(f1.pixelformat)
{
case 16:
while(h > 0)
{
p16 = scanline16(f1, h);
c16 = scanline16(f2, h);
memcpy(c16, p16, w*pixelsize);
h -= 2;
}
break;
case 24:
while(h > 0)
{
p24 = scanline24(f1, h);
c24 = scanline24(f2, h);
memcpy(c24, p24, w*pixelsize);
h -= 2;
}
break;
case 32:
while(h > 0)
{
p32 = scanline32(f1, h);
c32 = scanline32(f2, h);
memcpy(c32, p32, w*pixelsize);
h -= 2;
}
break;
}
}
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