/* 
 * 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 "fadecolor.h"
#include <stdlib.h>
#include <libvje/internal.h>

vj_effect *fadecolor_init(int w,int h)
{
    vj_effect *ve = (vj_effect *) malloc(sizeof(vj_effect));
    ve->num_params = 4;
    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] = 255;
    ve->defaults[1] = VJ_EFFECT_COLOR_BLACK;
    ve->defaults[2] = 15;
    ve->defaults[3] = 1;
    ve->sub_format = 0;
    ve->limits[0][0] = 1;
    ve->limits[1][0] = 255;

    ve->limits[0][1] = 0;
    ve->limits[1][1] = 7;

    ve->limits[0][2] = 1;
    ve->limits[1][2] = (120 * 25);
    ve->limits[0][3] = 0;
    ve->limits[1][3] = 1;
	ve->has_user = 0;
    ve->description = "Transition Fade to Color";
    ve->extra_frame = 0;
    return ve;
}

void colorfade_apply(VJFrame *frame, int width, int height, int opacity,
		     int color)
{
    unsigned int i, op0, op1;
    unsigned int len = width * height;
    uint8_t colorCb = 128, colorCr = 128;
    uint8_t 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];

    switch (color) {
    case VJ_EFFECT_COLOR_RED:
	colorCb = VJ_EFFECT_CB_RED;
	colorCr = VJ_EFFECT_CR_RED;
	colorY = VJ_EFFECT_LUM_RED;
	break;
    case VJ_EFFECT_COLOR_BLUE:
	colorCb = VJ_EFFECT_CB_BLUE;
	colorCr = VJ_EFFECT_CR_BLUE;
	colorY = VJ_EFFECT_LUM_BLUE;

	break;
    case VJ_EFFECT_COLOR_GREEN:
	colorCb = VJ_EFFECT_CB_GREEN;
	colorCr = VJ_EFFECT_CR_GREEN;
	colorY = VJ_EFFECT_LUM_GREEN;

	break;
    case VJ_EFFECT_COLOR_CYAN:
	colorCb = VJ_EFFECT_CB_CYAN;
	colorCr = VJ_EFFECT_CR_CYAN;
	colorY = VJ_EFFECT_LUM_CYAN;

	break;
    case VJ_EFFECT_COLOR_MAGNETA:
	colorCb = VJ_EFFECT_CB_MAGNETA;
	colorCr = VJ_EFFECT_CR_MAGNETA;
	colorY = VJ_EFFECT_LUM_MAGNETA;

	break;
    case VJ_EFFECT_COLOR_YELLOW:
	colorCb = VJ_EFFECT_CB_YELLOW;
	colorCr = VJ_EFFECT_CR_YELLOW;
	colorY = VJ_EFFECT_LUM_YELLOW;

	break;
    case VJ_EFFECT_COLOR_BLACK:
	colorCb = VJ_EFFECT_CB_BLACK;
	colorCr = VJ_EFFECT_CR_BLACK;
	colorY = VJ_EFFECT_LUM_BLACK;

	break;
    case VJ_EFFECT_COLOR_WHITE:
	colorCb = VJ_EFFECT_CB_WHITE;
	colorCr = VJ_EFFECT_CR_WHITE;
	break;
    }

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

    for (i = 0; i < len; i++)
	Y[i] = (op0 * Y[i] + op1 * colorY) >> 8;
    for (i = 0; i < uv_len; i++) {
	Cb[i] = (op0 * Cb[i] + op1 * colorCb) >> 8;
	Cr[i] = (op0 * Cr[i] + op1 * colorCr) >> 8;
    }
}
void fadecolor_free(){}