void vp8_mbloop_filter_horizontal_edge_c
(
    unsigned char *s,
    int p,
    const unsigned char *blimit,
    const unsigned char *limit,
    const unsigned char *thresh,
    int count
)
{
    signed char hev = 0; /* high edge variance */
    signed char mask = 0;
    int i = 0;

    /* loop filter designed to work using chars so that we can make maximum use
     * of 8 bit simd instructions.
     */
    do
    {

        mask = vp8_filter_mask(limit[0], blimit[0],
                               s[-4*p], s[-3*p], s[-2*p], s[-1*p],
                               s[0*p], s[1*p], s[2*p], s[3*p]);

        hev = vp8_hevmask(thresh[0], s[-2*p], s[-1*p], s[0*p], s[1*p]);

        vp8_mbfilter(mask, hev, s - 3 * p, s - 2 * p, s - 1 * p, s, s + 1 * p, s + 2 * p);

        ++s;
    }
    while (++i < count * 8);

}
void vp8_mbloop_filter_vertical_edge_c
(
    unsigned char *s,
    int p,
    const unsigned char *blimit,
    const unsigned char *limit,
    const unsigned char *thresh,
    int count
)
{
    signed char hev = 0; /* high edge variance */
    signed char mask = 0;
    int i = 0;

    do
    {

        mask = vp8_filter_mask(limit[0], blimit[0],
                               s[-4], s[-3], s[-2], s[-1], s[0], s[1], s[2], s[3]);

        hev = vp8_hevmask(thresh[0], s[-2], s[-1], s[0], s[1]);

        vp8_mbfilter(mask, hev, s - 3, s - 2, s - 1, s, s + 1, s + 2);

        s += p;
    }
    while (++i < count * 8);

}
void vp8_mbloop_filter_horizontal_edge_c
(
    unsigned char *s,
    int p,
    const unsigned char *blimit,
    const unsigned char *limit,
    const unsigned char *thresh,
    int count
)
{
    signed char hev = 0; 
    signed char mask = 0;
    int i = 0;

    do
    {

        mask = vp8_filter_mask(limit[0], blimit[0],
                               s[-4*p], s[-3*p], s[-2*p], s[-1*p],
                               s[0*p], s[1*p], s[2*p], s[3*p]);

        hev = vp8_hevmask(thresh[0], s[-2*p], s[-1*p], s[0*p], s[1*p]);

        vp8_mbfilter(mask, hev, s - 3 * p, s - 2 * p, s - 1 * p, s, s + 1 * p, s + 2 * p);

        ++s;
    }
    while (++i < count * 8);

}