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https://github.com/game-stop/veejay.git
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110 lines
3.7 KiB
C
110 lines
3.7 KiB
C
/*
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* Linux VeeJay
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*
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* Copyright(C)2002 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 "revtv.h"
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#include "common.h"
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#include <stdlib.h>
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vj_effect *revtv_init(int max_width, int max_height)
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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->defaults[0] = 2;
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ve->defaults[1] = 42;
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ve->defaults[2] = 201;
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ve->defaults[3] = 6;
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ve->limits[0][0] = 1; /* line spacing */
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ve->limits[1][0] = max_height;
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ve->limits[0][1] = 1; /* vscale */
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ve->limits[1][1] = max_width;
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ve->limits[0][2] = 0; /* luminance intensity */
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ve->limits[1][2] = 255;
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ve->limits[0][3] = 0; /* color range */
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ve->limits[1][3] = 7;
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ve->description = "RevTV (EffectTV)";
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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, "Line spacing", "Vertical scale", "Luminance intensity","Color range");
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return ve;
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}
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/**********************************************************************************************
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*
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* revTV: taken from effectv-0.3.5. linespace = 1 gives a nice result.
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* added the variable 'color' , so the user is free to choose replacement result. Default was 0xff.
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*
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**********************************************************************************************/
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void revtv_apply(VJFrame *frame, int width, int height, int linespace,
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int vscale, int color, int color_num)
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{
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int x, y;
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uint8_t *nsrc;
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int X1, X2, X3;
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int yval;
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int uv_width = frame->uv_width;
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int uv_height = frame->uv_height;
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int colorCb = bl_pix_get_color_cb(color);
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int colorCr = bl_pix_get_color_cr(color_num);
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uint8_t *Y = frame->data[0];
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uint8_t *Cb= frame->data[1];
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uint8_t *Cr= frame->data[2];
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for (y = 0; y < height; y += linespace) {
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for (x = 0; x <= width; x++) {
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nsrc = Y + (y * width) + x;
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X1 = ((*nsrc) & 0xff0000) >> (16 - 1);
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X2 = ((*nsrc) & 0xff00) >> (8 - 2);
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X3 = (*nsrc) & 0xff;
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yval = y - ((short) (X1 + X2 + X3) / vscale);
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if (yval > 0)
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Y[x + (yval * width)] = color;
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}
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}
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if (color_num > 0) {
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for (y = 0; y < uv_height; y += linespace) {
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for (x = 0; x <= uv_width; x++) {
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nsrc = Cb + (y * uv_width) + x;
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X1 = ((*nsrc) & 0xff0000) >> (8 - 1);
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X2 = ((*nsrc) & 0xff00) >> (4 - 2);
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X3 = ((*nsrc) & 0xff) >> 1;
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yval = y - ((short) (X1 + X2 + X3) / vscale);
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if (yval > 0)
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Cb[x + (yval * uv_width)] = colorCr;
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nsrc = Cr + (y * uv_width) + x;
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X1 = ((*nsrc) & 0xff0000) >> (8 - 1);
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X2 = ((*nsrc) & 0xff00) >> (4 - 2);
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X3 = ((*nsrc) & 0xff) >> 1;
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yval = y - ((short) (X1 + X2 + X3) / vscale);
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if (yval > 0)
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Cr[x + (yval * uv_width)] = colorCb;
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}
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}
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}
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}
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void revtv_free(){}
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