/*

  * Copyright (C) 2006  Aurelien Jacobs <aurel@gnuage.org>
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg 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
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 

 /**
  * @file
  * VP6 DSP-oriented functions
  */
 

 #include "libavutil/common.h"

 #include "vp56dsp.h"

 void ff_vp6_filter_diag4_c(uint8_t *dst, uint8_t *src, ptrdiff_t stride,

                            const int16_t *h_weights, const int16_t *v_weights)
 {
     int x, y;
     int tmp[8*11];
     int *t = tmp;
 
     src -= stride;
 
     for (y=0; y<11; y++) {
         for (x=0; x<8; x++) {
             t[x] = av_clip_uint8((  src[x-1] * h_weights[0]
                                + src[x  ] * h_weights[1]
                                + src[x+1] * h_weights[2]
                                + src[x+2] * h_weights[3] + 64) >> 7);
         }
         src += stride;
         t += 8;
     }
 
     t = tmp + 8;
     for (y=0; y<8; y++) {
         for (x=0; x<8; x++) {
             dst[x] = av_clip_uint8((  t[x-8 ] * v_weights[0]
                                  + t[x   ] * v_weights[1]
                                  + t[x+8 ] * v_weights[2]
                                  + t[x+16] * v_weights[3] + 64) >> 7);
         }
         dst += stride;
         t += 8;
     }
 }