VIDEO_Ycc2Rgb
Default mainpageat91libutilityVIDEO_Ycc2Rgb
Description Source Call Graph
Start Line: 51
void VIDEO_Ycc2Rgb(unsigned char *ycc, unsigned short *rgb, unsigned int len)
{
    int r_calc_i;
    int g_calc_i;
    int b_calc_i;
    int r_calc_i_incr;
    int g_calc_i_incr;
    int b_calc_i_incr;
    int cr_i;
    int y_i;
    int cb_i;
    int y_i_incr;
    int val;
    int val1;
    int val2;
    int val3;
    int val4;
    int val5;
    int i;

    for(i=0; i<len; i++)
    {
        cb_i = (int)ycc[4*i];
        y_i  = (int )ycc[4*i+1];
        cr_i = (int )ycc[4*i+2];
        y_i_incr =(int )ycc[4*i+3];

        val  = 1164*(y_i-16);
        val1 = 1164*(y_i_incr-16);
        val2 = 1596*(cr_i- 128);
        val3 =  813*(cb_i-128);
        val4 =  392*(cr_i-128);
        val5 = 2017*(cb_i-128);

        r_calc_i = (val + val2)/1000;
        g_calc_i = (val - val3 - val4)/1000;
        b_calc_i = (val + val5)/1000;
        r_calc_i_incr = (val1 + val2)/1000;
        g_calc_i_incr = (val1 - val3 - val4)/1000;
        b_calc_i_incr = (val1 + val5)/1000;

        if (r_calc_i < 0)
            r_calc_i = 0;
        else if (r_calc_i > 255)
            r_calc_i = 255;

        if (g_calc_i < 0)
            g_calc_i = 0;
        else if (g_calc_i > 255)
            g_calc_i = 255;

        if (b_calc_i < 0)
            b_calc_i = 0;
        else if (b_calc_i > 255)
            b_calc_i = 255;

        if (r_calc_i_incr < 0)
            r_calc_i_incr = 0;
        else if (r_calc_i_incr > 255)
            r_calc_i_incr = 255;

        if (g_calc_i_incr < 0)
            g_calc_i_incr = 0;
        else if (g_calc_i_incr > 255)
            g_calc_i_incr = 255;

        if (b_calc_i_incr < 0)
            b_calc_i_incr = 0;
        else if (b_calc_i_incr > 255)
            b_calc_i_incr = 255;

        *rgb++ = (((unsigned short )r_calc_i & 0xF8) >> 3)
               | ((((unsigned short)g_calc_i & 0xF8) >> 3) << 5)
               | ((((unsigned short)b_calc_i & 0xF8) >> 3) << 10);

        *rgb++ = (((unsigned short )r_calc_i_incr & 0xF8) >> 3)
               | ((((unsigned short)g_calc_i_incr & 0xF8) >> 3) << 5)
               | ((((unsigned short)b_calc_i_incr & 0xF8) >> 3) << 10);
    }
}