* Copyright (C) 2003-2004 Ushodaya Enterprises Limited
* Author: Charles Yates <charles.yates@pandora.be>
*
- * 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 library 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.
*
- * This program is distributed in the hope that it will be useful,
+ * 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 General Public License for more details.
+ * 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 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.
+ * You should have received a copy of the GNU Lesser 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 "filter_charcoal.h"
int sum1;
int sum2;
float sum;
+ int val;
// Loop for each row
for ( y = 0; y < *height; y ++ )
*p ++ = !invert ? ( sum >= 16 && sum <= 235 ? 251 - sum : sum < 16 ? 235 : 16 ) :
( sum >= 16 && sum <= 235 ? sum : sum < 16 ? 16 : 235 );
q ++;
- *p ++ = 128 + mix * ( *q ++ - 128 );
+ val = 128 + mix * ( *q ++ - 128 );
+ val = val < 16 ? 16 : val > 240 ? 240 : val;
+ *p ++ = val;
}
}