/* 
 * Linux VeeJay
 *
 * Copyright(C)2002 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 "fadecolorrgb.h"
#include <stdlib.h>

vj_effect *fadecolorrgb_init(int w,int h)
{
    vj_effect *ve = (vj_effect *) malloc(sizeof(vj_effect));
    ve->num_params = 6;
    ve->defaults = (int *) malloc(sizeof(int) * ve->num_params);	/* default values */
    ve->limits[0] = (int *) malloc(sizeof(int) * ve->num_params);	/* min */
    ve->limits[1] = (int *) malloc(sizeof(int) * ve->num_params);	/* max */
    ve->defaults[0] = 150;
    ve->defaults[1] = 0;
    ve->defaults[2] = 0;
    ve->defaults[3] = 0;
    ve->defaults[4] = 0;
    ve->defaults[5] = 75;
    ve->sub_format = 0;
    ve->limits[0][0] = 1;
    ve->limits[1][0] = 255;

    ve->limits[0][1] = 1;
    ve->limits[1][1] = 255;

    ve->limits[0][2] = 1;
    ve->limits[1][2] = 255;
    ve->limits[0][3] = 0;
    ve->limits[1][3] = 255;

    ve->limits[0][4] = 0;
    ve->limits[1][4] = 1;

    ve->limits[0][5] = 1;
    ve->limits[1][5] = (25 * 120);
    ve->description = "Transition Fade to Color by RGB";
	ve->has_user = 0;
    ve->extra_frame = 0;
    return ve;
}

void colorfadergb_apply( VJFrame *frame, int width, int height,
			int opacity, int r, int g, int b)
{
    unsigned int i, op0, op1;
    unsigned int len = width * height;
    unsigned int colorCb = 128, colorCr = 128;
    unsigned int colorY;
    const int uv_len = frame->uv_len;
    uint8_t *Y = frame->data[0];
    uint8_t *Cb = frame->data[1];
    uint8_t *Cr = frame->data[2];


    colorY = ((0.257 * r) + (0.504 * g) + (0.098 * b) + 16);
    colorCb = ((0.439 * r) - (0.368 * g) - (0.071 * b) + 128);
    colorCr = (-(0.148 * r) - (0.291 * g) + (0.439 * b) + 128);


    op1 = (opacity > 255) ? 255 : opacity;
    op0 = 255 - op1;

    for (i = 0; i < len; i++)
	Y[i] = (op0 * Y[i] + op1 * colorY) / 255;
    for (i = 0; i < uv_len; i++) {
	Cb[i] = (op0 * Cb[i] + op1 * colorCb) / 255;
	Cr[i] = (op0 * Cr[i] + op1 * colorCr) / 255;
    }
}
void fadecolorrgb_free(){}