/* 
 * Linux VeeJay
 *
 * Copyright(C)2004 Niels Elburg <nwelburg@gmail.com>
 *
 * 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 "common.h"
#include <veejaycore/vjmem.h>
#include "chromium.h"

vj_effect *chromium_init(int w, int h)
{
    vj_effect *ve = (vj_effect *) vj_calloc(sizeof(vj_effect));
    ve->num_params = 1;

    ve->defaults = (int *) vj_calloc(sizeof(int) * ve->num_params);	/* default values */
    ve->limits[0] = (int *) vj_calloc(sizeof(int) * ve->num_params);	/* min */
    ve->limits[1] = (int *) vj_calloc(sizeof(int) * ve->num_params);	/* max */
    ve->limits[0][0] = 0;
    ve->limits[1][0] = 9;
    ve->defaults[0] = 0;
    ve->description = "Chromium";
    ve->parallel = 1;
    ve->sub_format = -1;
    ve->extra_frame = 0;
    ve->has_user = 0;
    ve->param_description = vje_build_param_list( ve->num_params, "Mode" );

    ve->hints = vje_init_value_hint_list( ve->num_params );

    vje_build_value_hint_list( ve->hints, ve->limits[1][0], 0,
        "Chroma Blue", "Chroma Red", "Chroma Red and Blue", "Chroma Swap",
        "Chroma Yellow", "Chroma Orange", "Chroma Rose",
        "Chroma Green", "Chroma Purple", "Chroma Yellow swap White"
    );

    return ve;
}

void chromium_apply(void *ptr, VJFrame *frame, int *args ) {

    int m = args[0];

    const int len = (frame->ssm ? frame->len : frame->uv_len);
    uint8_t *Cb = frame->data[1];
    uint8_t *Cr = frame->data[2];

    unsigned int i;
    double tmp;
    switch(m){
        case 0:
        for( i = 0; i < len ; i++) {
          Cb[i] = 0xff - Cb[i];
        }
        break;
        case 1:
        for( i = 0; i < len ; i++) {
          Cr[i] = 0xff - Cr[i];
        }
        break;
        case 2:
        for( i = 0; i < len; i++) {
          Cb[i] = 0xff - Cb[i];
          Cr[i] = 0xff - Cr[i];
        }
        break;
        case 3:
        // swap cb/cr
        for (i = 0; i < len ; i++) {
          tmp = Cb[i];
          Cb[i] = Cr[i];
          Cr[i] = tmp;
        }
        break;
        case 4:
        for (i = 0; i < len ; i++) {
          Cb[i] = 0xff - Cr[i];
        }
        break;
        case 5:
        for (i = 0; i < len ; i++) {
          Cr[i] = 0xff - Cb[i];
        }
        break;
        case 6:
        for (i = 0; i < len ; i++) {
          tmp = Cr[i];
          Cr[i] = 0xff - Cb[i];
          Cb[i] = 0xff - tmp;
        }
        break;
        case 7:
        for (i = 0; i < len ; i++) {
          tmp = Cr[i];
          Cr[i] = Cb[i];
          Cb[i] = 0xff - tmp;
        }
        break;
        case 8:
        for (i = 0; i < len ; i++) {
          tmp = Cr[i];
          Cr[i] = 0xff - Cb[i];
          Cb[i] = tmp;
        }
        break;
        case 9: // yellow on white
        for( i = 0; i < len ; i++) {
          Cb[i] = 0xaa - Cb[i];
        }
        break;
    }

}