mirror of
https://github.com/game-stop/veejay.git
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131 lines
3.8 KiB
C
131 lines
3.8 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 <config.h>
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#include <math.h>
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#include "sinoids.h"
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#include <stdlib.h>
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#include "common.h"
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static int *sinoids_X;
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static uint8_t *sinoid_frame[3];
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vj_effect *sinoids_init(int width, int height)
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{
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vj_effect *ve = (vj_effect *) vj_malloc(sizeof(vj_effect));
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ve->num_params = 2;
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ve->defaults = (int *) vj_malloc(sizeof(int) * ve->num_params); /* default values */
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ve->limits[0] = (int *) vj_malloc(sizeof(int) * ve->num_params); /* min */
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ve->limits[1] = (int *) vj_malloc(sizeof(int) * ve->num_params); /* max */
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ve->defaults[0] = 1;
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ve->defaults[1] = 70;
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ve->limits[0][0] = 0;
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ve->limits[1][0] = 1;
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ve->limits[0][1] = 0;
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ve->limits[1][1] = 1000; /* sinoids */
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ve->description = "Sinoids";
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ve->sub_format = 1;
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ve->extra_frame = 0;
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ve->has_user = 0;
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return ve;
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}
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//FIXME private
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int sinoids_malloc(int width, int height)
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{
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int i = 0;
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sinoids_X = (int*) vj_malloc(sizeof(int) * width);
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if(!sinoids_X) return 0;
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sinoid_frame[0] = (uint8_t*)vj_malloc(sizeof(uint8_t) * height * width);
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if(!sinoid_frame[0]) return 0;
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sinoid_frame[1] = (uint8_t*)vj_malloc(sizeof(uint8_t) * height * width);
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if(!sinoid_frame[1]) return 0;
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sinoid_frame[2] = (uint8_t*)vj_malloc(sizeof(uint8_t) * height * width);
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if(!sinoid_frame[2]) return 0;
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for(i=0; i < width; i++ ) {
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//double si;
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//fast_sin( si, ( ((double)i/(double)width)*2*3.1415926));
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sinoids_X[i] = (int) ( sin( ((double)i/(double)width) * 2 * 3.1415926) * 1);
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//sinoids_X[i] = (int) si;
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sinoids_X[i] *= 4;
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}
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return 1;
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}
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void sinoids_free() {
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if(sinoids_X) free(sinoids_X);
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if(sinoid_frame[0]) free(sinoid_frame[0]);
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if(sinoid_frame[1]) free(sinoid_frame[1]);
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if(sinoid_frame[2]) free(sinoid_frame[2]);
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}
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void sinoids_recalc(int width, int z) {
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int i=0;
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double zoom = ( (double)z / 10.0);
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for(i=0; i < width; i++ ) {
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//fast_sin(si, ( ((double)i/(double)width)*2*3.1415926));//
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//sinoids_X[i] = (int) si;
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sinoids_X[i] = (int) ( sin( ((double)i/(double)width) * 2 * 3.1415926) * zoom);
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sinoids_X[i] *= 4;
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}
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}
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static int current_sinoids = 100;
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void sinoids_apply(VJFrame *frame, int width, int height, int m, int s) {
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unsigned int len = width * height;
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unsigned int r,c;
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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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if(s != current_sinoids) {
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sinoids_recalc( width, s);
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current_sinoids = s;
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}
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if(m==0) {
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for( r=width ; r < len-width; r+=width) {
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for( c = 0; c < width; c++) {
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Y[r+c] = Y[(r+c+sinoids_X[c])];
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Cb[r+c] = Cb[(r+c+sinoids_X[c])];
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Cr[r+c] = Cr[(r+c+sinoids_X[c])];
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}
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}
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}
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else {
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/* on copy */
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for(r=0; r < len ;r++) {
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sinoid_frame[0][r] = Y[r];
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sinoid_frame[1][r] = Cb[r];
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sinoid_frame[2][r] = Cr[r];
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}
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for(r=width; r < len-width; r+= width) {
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for(c=0; c < width; c++) {
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Y[r+c] = sinoid_frame[0][(r+c+sinoids_X[c])];
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Cb[r+c] = sinoid_frame[1][(r+c+sinoids_X[c])];
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Cr[r+c] = sinoid_frame[2][(r+c+sinoids_X[c])];
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}
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}
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}
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}
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