tprintf("filter_mb_edgech i:%d d:%d, qp:%d, indexA:%d, alpha:%d, beta:%d\n# bS:%d -> [%02x, %02x, %02x, %02x, %02x, %02x] =>[%02x, %02x, %02x, %02x]\n", i, d, qp, index_a, alpha, beta, bS[i], pix[-3*pix_next], p1, p0, q0, q1, pix[2*pix_next], pix[-2*pix_next], pix[-pix_next], pix[0], pix[pix_next]);
static void filter_mb_edgech( H264Context *h, uint8_t *pix, int stride, int bS[4], int qp ) {    int i, d;    const int index_a = clip( qp + h->slice_alpha_c0_offset, 0, 51 );    const int alpha = alpha_table[index_a];    const int beta  = beta_table[clip( qp + h->slice_beta_offset, 0, 51 )];    const int pix_next  = stride;    for( i = 0; i < 4; i++ )    {        if( bS[i] == 0 ) {            pix += 2;            continue;        }        if( bS[i] < 4 ) {            int tc = tc0_table[index_a][bS[i] - 1] + 1;            /* 2px edge length (see deblocking_filter_edgecv) */            for( d = 0; d < 2; d++ ) {                const int p0 = pix[-1*pix_next];                const int p1 = pix[-2*pix_next];                const int q0 = pix[0];                const int q1 = pix[1*pix_next];                if( ABS( p0 - q0 ) < alpha &&                    ABS( p1 - p0 ) < beta &&                    ABS( q1 - q0 ) < beta ) {                    int i_delta = clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc );                    pix[-pix_next] = clip_uint8( p0 + i_delta );    /* p0' */                    pix[0]         = clip_uint8( q0 - i_delta );    /* q0' */                }                pix++;            }        }else{            /* 2px edge length (see deblocking_filter_edgecv) */            for( d = 0; d < 2; d++ ) {                const int p0 = pix[-1*pix_next];                const int p1 = pix[-2*pix_next];                const int q0 = pix[0];                const int q1 = pix[1*pix_next];                if( ABS( p0 - q0 ) < alpha &&                    ABS( p1 - p0 ) < beta &&                    ABS( q1 - q0 ) < beta ) {                    pix[-pix_next] = ( 2*p1 + p0 + q1 + 2 ) >> 2;   /* p0' */                    pix[0]         = ( 2*q1 + q0 + p1 + 2 ) >> 2;   /* q0' */                }                pix++;            }        }    }}