mirror of
https://github.com/game-stop/veejay.git
synced 2025-12-17 05:10:00 +01:00
78 lines
2.2 KiB
C
78 lines
2.2 KiB
C
/*
|
|
* Linux VeeJay
|
|
*
|
|
* Copyright(C)2015 Niels Elburg <nwelburg@gmail.com>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include "common.h"
|
|
#include <veejaycore/vjmem.h>
|
|
#include "alphaflatten.h"
|
|
|
|
vj_effect *alphaflatten_init(int w, int h)
|
|
{
|
|
vj_effect *ve = (vj_effect *) vj_calloc(sizeof(vj_effect));
|
|
ve->num_params = 0;
|
|
ve->description = "Alpha: Flatten Image";
|
|
ve->sub_format = 1;
|
|
ve->extra_frame = 0;
|
|
ve->parallel = 1;
|
|
ve->has_user = 0;
|
|
ve->num_params = 1;
|
|
ve->limits[0] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* min */
|
|
ve->limits[1] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* max */
|
|
ve->defaults = (int *) vj_calloc(sizeof(int) * ve->num_params); /* default values */
|
|
ve->limits[0][0] = 0;
|
|
ve->limits[1][0] = 1;
|
|
ve->defaults[0] = 0;
|
|
|
|
ve->alpha = FLAG_ALPHA_SRC_A | FLAG_ALPHA_OUT;
|
|
|
|
ve->param_description = vje_build_param_list( ve->num_params, "Clear Alpha" );
|
|
|
|
return ve;
|
|
}
|
|
|
|
|
|
void alphaflatten_apply( void *ptr, VJFrame *frame, int *args ) {
|
|
int mode = args[0];
|
|
|
|
unsigned int i;
|
|
const int len = frame->len;
|
|
|
|
uint8_t *o0 = frame->data[0];
|
|
uint8_t *o1 = frame->data[1];
|
|
uint8_t *o2 = frame->data[2];
|
|
uint8_t *oA = frame->data[3];
|
|
uint8_t *a0 = frame->data[0];
|
|
uint8_t *a1 = frame->data[1];
|
|
uint8_t *a2 = frame->data[2];
|
|
uint8_t *aA = frame->data[3];
|
|
|
|
for( i = 0; i < len; i ++ )
|
|
{
|
|
unsigned int op1 = 0xff - aA[i];
|
|
unsigned int op0 = aA[i];
|
|
o0[i] = (op0 * a0[i]) >> 8;
|
|
o1[i] = (op0 * a1[i] + op1 * 128) >> 8;
|
|
o2[i] = (op0 * a2[i] + op1 * 128)>>8;
|
|
}
|
|
|
|
if( mode ) {
|
|
veejay_memset( oA, 0, len );
|
|
}
|
|
}
|