Files
veejay/veejay-current/veejay-server/libvje/effects/lumablend.c

216 lines
6.0 KiB
C

/*
* Linux VeeJay
*
* Copyright(C)2004 Niels Elburg <elburg@hio.hen.nl>
*
* 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 <stdint.h>
#include <stdio.h>
#include <libvjmem/vjmem.h>
#include "lumablend.h"
#include <veejay/vj-task.h>
vj_effect *lumablend_init(int w, int h)
{
vj_effect *ve = (vj_effect *) vj_calloc(sizeof(vj_effect));
ve->num_params = 4;
ve->defaults = (int *) vj_calloc(sizeof(int) * ve->num_params); /* default values */
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->limits[0][0] = 0; /* type */
ve->limits[1][0] = 2;
if(vj_task_available() )
ve->limits[1][0] = 1; /* no blur */
ve->limits[0][1] = 0; /* threshold 1 */
ve->limits[1][1] = 255;
ve->limits[0][2] = 0; /* threshold 2 */
ve->limits[1][2] = 255;
ve->limits[0][3] = 0; /*opacity */
ve->limits[1][3] = 255;
ve->defaults[0] = 1;
ve->defaults[1] = 0;
ve->defaults[2] = 35;
ve->defaults[3] = 150;
ve->description = "Opacity by Threshold";
ve->extra_frame = 1;
ve->parallel = 0;
ve->sub_format = 1;
ve->parallel = 1;
ve->has_user = 0;
ve->param_description = vje_build_param_list(ve->num_params, "Mode", "Threshold A", "Threshold B", "Opacity" );
return ve;
}
void opacity_by_threshold(uint8_t * yuv1[3], uint8_t * yuv2[3], int width,
int height, int threshold, int threshold2,
int opacity)
{
unsigned int x, y, len = width * height;
uint8_t a1, a2;
unsigned int op0, op1;
op1 = (opacity > 255) ? 255 : opacity;
op0 = 255 - op1;
for (y = 0; y < len; y += width) {
for (x = 0; x < width; x++) {
a1 = yuv1[0][x + y];
a2 = yuv2[0][x + y];
if (a1 >= threshold && a1 <= threshold2) {
yuv1[0][x + y] = (op0 * a1 + op1 * a2) >> 8;
yuv1[1][x + y] =
(op0 * yuv1[1][x + y] + op1 * yuv2[1][x + y]) >> 8;
yuv1[2][x + y] =
(op0 * yuv1[2][x + y] + op1 * yuv2[2][x + y]) >> 8;
}
}
}
}
void opacity_by_threshold_(uint8_t * yuv1[3], uint8_t * yuv2[3], int width,
int height, int threshold, int threshold2,
int opacity)
{
unsigned int x, y, len = width * height;
uint8_t a1, a2;
unsigned int op0, op1;
op1 = (opacity > 255) ? 255 : opacity;
op0 = 255 - op1;
for (y = 0; y < len; y += width) {
for (x = 0; x < width; x++) {
a1 = yuv1[0][x + y];
a2 = yuv2[0][x + y];
if (a2 > threshold && a2 < threshold2) {
yuv1[0][x + y] = (op0 * a1 + op1 * a2) >> 8;
yuv1[1][x + y] =
(op0 * yuv1[1][x + y] + op1 * yuv2[1][x + y]) >> 8;
yuv1[2][x + y] =
(op0 * yuv1[2][x + y] + op1 * yuv2[2][x + y]) >> 8;
}
}
}
}
void opacity_by_threshold_blur(uint8_t * yuv1[3], uint8_t * yuv2[3],
int width, int height, int threshold,
int threshold2, int opacity)
{
unsigned int x, y, len = width * height - width;
uint8_t a1=threshold, a2=threshold2;
unsigned int op0, op1;
op1 = (opacity > 255) ? 255 : opacity;
op0 = 255 - op1;
for( y = 0; y < width; y+= width ) {
for( x = 0; x < width; x ++ ) {
yuv1[0][x + y] = (op0 * a1 + op1 * a2) >> 8;
yuv1[1][x + y] =
(op0 * yuv1[1][x + y] + op1 * yuv2[1][x + y]) >> 8;
yuv1[2][x + y] =
(op0 * yuv1[2][x + y] + op1 * yuv2[2][x + y]) >> 8;
}
}
for (y = width; y < len; y += width) {
yuv1[0][y] = (op0 * a1 + op1 * a2) >> 8;
yuv1[1][y] =
(op0 * yuv1[1][y] + op1 * yuv2[1][y]) >> 8;
yuv1[2][y] =
(op0 * yuv1[2][y] + op1 * yuv2[2][y]) >> 8;
for (x = 1; x < width-1; x++) {
a1 = yuv1[0][x + y];
a2 = yuv2[0][x + y];
if (a1 >= threshold && a1 <= threshold2) {
a1 = (yuv1[0][y - width + x - 1] +
yuv1[0][y - width + x + 1] +
yuv1[0][y - width + x] +
yuv1[0][y + x] +
yuv1[0][y + x - 1] +
yuv1[0][y + x + 1] +
yuv1[0][y + width + x] +
yuv1[0][y + width + x + 1] +
yuv1[0][y + width + x - 1]
) / 9;
a2 = (yuv2[0][y - width + x - 1] +
yuv2[0][y - width + x + 1] +
yuv2[0][y - width + x] +
yuv2[0][y + x] +
yuv2[0][y + x - 1] +
yuv2[0][y + x + 1] +
yuv2[0][y + width + x] +
yuv2[0][y + width + x + 1] +
yuv2[0][y + width + x - 1]
) / 9;
yuv1[0][x + y] = (op0 * a1 + op1 * a2) >> 8;
yuv1[1][x + y] =
(op0 * yuv1[1][x + y] + op1 * yuv2[1][x + y]) >> 8;
yuv1[2][x + y] =
(op0 * yuv1[2][x + y] + op1 * yuv2[2][x + y]) >> 8;
}
}
yuv1[0][width + y] = (op0 * a1 + op1 * a2) >> 8;
yuv1[1][width + y] =
(op0 * yuv1[1][width + y] + op1 * yuv2[1][width + y]) >> 8;
yuv1[2][width + y] =
(op0 * yuv1[2][width + y] + op1 * yuv2[2][width + y]) >> 8;
}
for( x = 0; x < width; x ++ ) {
yuv1[0][x + y] = (op0 * a1 + op1 * a2) >> 8;
yuv1[1][x + y] =
(op0 * yuv1[1][x + y] + op1 * yuv2[1][x + y]) >> 8;
yuv1[2][x + y] =
(op0 * yuv1[2][x + y] + op1 * yuv2[2][x + y]) >> 8;
}
}
void lumablend_apply(VJFrame *frame, VJFrame *frame2, int width,
int height, int type, int t1, int t2, int opacity)
{
switch (type) {
case 0:
opacity_by_threshold(frame->data, frame2->data, width, height, t1, t2, opacity);
break;
case 1:
opacity_by_threshold_(frame->data, frame2->data, width, height, t1, t2, opacity);
break;
case 2:
opacity_by_threshold_blur(frame->data, frame2->data, width, height, t1, t2,
opacity);
break;
}
}
void lumablend_free(){}