mirror of
https://github.com/game-stop/veejay.git
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216 lines
6.0 KiB
C
216 lines
6.0 KiB
C
/*
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* Linux VeeJay
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*
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* Copyright(C)2004 Niels Elburg <elburg@hio.hen.nl>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License , or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307 , USA.
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <libvjmem/vjmem.h>
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#include "lumablend.h"
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#include <veejay/vj-task.h>
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vj_effect *lumablend_init(int w, int h)
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{
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vj_effect *ve = (vj_effect *) vj_calloc(sizeof(vj_effect));
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ve->num_params = 4;
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ve->defaults = (int *) vj_calloc(sizeof(int) * ve->num_params); /* default values */
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ve->limits[0] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* min */
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ve->limits[1] = (int *) vj_calloc(sizeof(int) * ve->num_params); /* max */
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ve->limits[0][0] = 0; /* type */
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ve->limits[1][0] = 2;
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if(vj_task_available() )
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ve->limits[1][0] = 1; /* no blur */
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ve->limits[0][1] = 0; /* threshold 1 */
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ve->limits[1][1] = 255;
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ve->limits[0][2] = 0; /* threshold 2 */
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ve->limits[1][2] = 255;
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ve->limits[0][3] = 0; /*opacity */
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ve->limits[1][3] = 255;
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ve->defaults[0] = 1;
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ve->defaults[1] = 0;
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ve->defaults[2] = 35;
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ve->defaults[3] = 150;
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ve->description = "Opacity by Threshold";
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ve->extra_frame = 1;
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ve->parallel = 0;
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ve->sub_format = 1;
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ve->parallel = 1;
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ve->has_user = 0;
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ve->param_description = vje_build_param_list(ve->num_params, "Mode", "Threshold A", "Threshold B", "Opacity" );
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return ve;
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}
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void opacity_by_threshold(uint8_t * yuv1[3], uint8_t * yuv2[3], int width,
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int height, int threshold, int threshold2,
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int opacity)
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{
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unsigned int x, y, len = width * height;
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uint8_t a1, a2;
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unsigned int op0, op1;
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op1 = (opacity > 255) ? 255 : opacity;
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op0 = 255 - op1;
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for (y = 0; y < len; y += width) {
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for (x = 0; x < width; x++) {
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a1 = yuv1[0][x + y];
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a2 = yuv2[0][x + y];
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if (a1 >= threshold && a1 <= threshold2) {
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yuv1[0][x + y] = (op0 * a1 + op1 * a2) >> 8;
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yuv1[1][x + y] =
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(op0 * yuv1[1][x + y] + op1 * yuv2[1][x + y]) >> 8;
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yuv1[2][x + y] =
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(op0 * yuv1[2][x + y] + op1 * yuv2[2][x + y]) >> 8;
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}
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}
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}
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}
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void opacity_by_threshold_(uint8_t * yuv1[3], uint8_t * yuv2[3], int width,
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int height, int threshold, int threshold2,
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int opacity)
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{
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unsigned int x, y, len = width * height;
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uint8_t a1, a2;
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unsigned int op0, op1;
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op1 = (opacity > 255) ? 255 : opacity;
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op0 = 255 - op1;
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for (y = 0; y < len; y += width) {
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for (x = 0; x < width; x++) {
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a1 = yuv1[0][x + y];
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a2 = yuv2[0][x + y];
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if (a2 > threshold && a2 < threshold2) {
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yuv1[0][x + y] = (op0 * a1 + op1 * a2) >> 8;
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yuv1[1][x + y] =
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(op0 * yuv1[1][x + y] + op1 * yuv2[1][x + y]) >> 8;
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yuv1[2][x + y] =
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(op0 * yuv1[2][x + y] + op1 * yuv2[2][x + y]) >> 8;
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}
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}
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}
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}
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void opacity_by_threshold_blur(uint8_t * yuv1[3], uint8_t * yuv2[3],
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int width, int height, int threshold,
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int threshold2, int opacity)
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{
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unsigned int x, y, len = width * height - width;
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uint8_t a1=threshold, a2=threshold2;
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unsigned int op0, op1;
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op1 = (opacity > 255) ? 255 : opacity;
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op0 = 255 - op1;
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for( y = 0; y < width; y+= width ) {
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for( x = 0; x < width; x ++ ) {
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yuv1[0][x + y] = (op0 * a1 + op1 * a2) >> 8;
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yuv1[1][x + y] =
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(op0 * yuv1[1][x + y] + op1 * yuv2[1][x + y]) >> 8;
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yuv1[2][x + y] =
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(op0 * yuv1[2][x + y] + op1 * yuv2[2][x + y]) >> 8;
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}
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}
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for (y = width; y < len; y += width) {
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yuv1[0][y] = (op0 * a1 + op1 * a2) >> 8;
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yuv1[1][y] =
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(op0 * yuv1[1][y] + op1 * yuv2[1][y]) >> 8;
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yuv1[2][y] =
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(op0 * yuv1[2][y] + op1 * yuv2[2][y]) >> 8;
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for (x = 1; x < width-1; x++) {
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a1 = yuv1[0][x + y];
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a2 = yuv2[0][x + y];
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if (a1 >= threshold && a1 <= threshold2) {
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a1 = (yuv1[0][y - width + x - 1] +
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yuv1[0][y - width + x + 1] +
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yuv1[0][y - width + x] +
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yuv1[0][y + x] +
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yuv1[0][y + x - 1] +
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yuv1[0][y + x + 1] +
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yuv1[0][y + width + x] +
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yuv1[0][y + width + x + 1] +
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yuv1[0][y + width + x - 1]
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) / 9;
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a2 = (yuv2[0][y - width + x - 1] +
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yuv2[0][y - width + x + 1] +
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yuv2[0][y - width + x] +
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yuv2[0][y + x] +
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yuv2[0][y + x - 1] +
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yuv2[0][y + x + 1] +
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yuv2[0][y + width + x] +
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yuv2[0][y + width + x + 1] +
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yuv2[0][y + width + x - 1]
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) / 9;
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yuv1[0][x + y] = (op0 * a1 + op1 * a2) >> 8;
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yuv1[1][x + y] =
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(op0 * yuv1[1][x + y] + op1 * yuv2[1][x + y]) >> 8;
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yuv1[2][x + y] =
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(op0 * yuv1[2][x + y] + op1 * yuv2[2][x + y]) >> 8;
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}
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}
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yuv1[0][width + y] = (op0 * a1 + op1 * a2) >> 8;
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yuv1[1][width + y] =
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(op0 * yuv1[1][width + y] + op1 * yuv2[1][width + y]) >> 8;
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yuv1[2][width + y] =
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(op0 * yuv1[2][width + y] + op1 * yuv2[2][width + y]) >> 8;
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}
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for( x = 0; x < width; x ++ ) {
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yuv1[0][x + y] = (op0 * a1 + op1 * a2) >> 8;
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yuv1[1][x + y] =
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(op0 * yuv1[1][x + y] + op1 * yuv2[1][x + y]) >> 8;
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yuv1[2][x + y] =
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(op0 * yuv1[2][x + y] + op1 * yuv2[2][x + y]) >> 8;
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}
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}
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void lumablend_apply(VJFrame *frame, VJFrame *frame2, int width,
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int height, int type, int t1, int t2, int opacity)
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{
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switch (type) {
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case 0:
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opacity_by_threshold(frame->data, frame2->data, width, height, t1, t2, opacity);
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break;
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case 1:
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opacity_by_threshold_(frame->data, frame2->data, width, height, t1, t2, opacity);
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break;
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case 2:
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opacity_by_threshold_blur(frame->data, frame2->data, width, height, t1, t2,
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opacity);
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break;
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}
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}
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void lumablend_free(){}
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