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https://github.com/game-stop/veejay.git
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90 lines
3.1 KiB
C
90 lines
3.1 KiB
C
/*
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* Linux VeeJay
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*
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* Copyright(C)2005 Niels Elburg <nwelburg@gmail.com>
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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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/* Blend
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(add, substract,mult, divide) between source image and constant value
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cat libvje/internal.h |grep BLEND
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Most of the blending parameters ignore p3 and p4 (default values 128)
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*/
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#include <config.h>
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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 "constantblend.h"
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#include "common.h"
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vj_effect *constantblend_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 = 3;
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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;
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ve->limits[1][0] = 32;
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ve->limits[0][1] = 1; // scale from 0.0 to 5.0 (only luma)
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ve->limits[1][1] = 500;
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ve->limits[0][2] = pixel_Y_lo_;
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ve->limits[1][2] = pixel_Y_hi_;
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ve->defaults[0] = 1; // blend type (additive)
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ve->defaults[1] = 110; // scale before blend
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ve->defaults[2] = 16; // constant Y
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ve->description = "Constant Luminance Blend";
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ve->parallel = 1;
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ve->sub_format = 0;
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ve->extra_frame = 0;
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ve->has_user = 0;
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ve->param_description = vje_build_param_list( ve->num_params, "Mode", "Threshold", "Constant" );
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ve->hints = vje_init_value_hint_list( ve->num_params );
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vje_build_value_hint_list( ve->hints, ve->limits[1][0], 0,
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"Additive", "Subtractive","Multiply","Divide","Lighten","Hardlight",
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"Difference","Difference Negate","Exclusive","Base","Freeze",
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"Unfreeze","Relative Add","Relative Subtract","Max select", "Min select",
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"Relative Luma Add", "Relative Luma Subtract", "Min Subselect", "Max Subselect",
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"Add Subselect", "Add Average", "Experimental 1","Experimental 2", "Experimental 3",
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"Multisub", "Softburn", "Inverse Burn", "Dodge", "Distorted Add", "Distorted Subtract", "Experimental 4", "Negation Divide");
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return ve;
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}
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void constantblend_apply( VJFrame *frame, int width, int height,
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int type, int scale, int valY )
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{
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unsigned int i;
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const int len = (width * height);
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const uint8_t y = (uint8_t) valY;
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const float s = ((float) scale / 100.0 );
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pix_func_Y blend_y = get_pix_func_Y( type );
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uint8_t *Y = frame->data[0];
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for (i = 0; i < len; i++)
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{
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int tmp_val =(int)( ((float) *(Y)) * s);
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*(Y)++ = blend_y( (uint8_t) ( (uint8_t) tmp_val ) , y );
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}
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}
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