/*
  * FFV1 codec
  *
  * Copyright (c) 2003-2013 Michael Niedermayer <michaelni@gmx.at>
  *
  * 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
  */
 
 static inline int RENAME(predict)(TYPE *src, TYPE *last)
 {
     const int LT = last[-1];
     const int T  = last[0];
     const int L  = src[-1];
 
     return mid_pred(L, L + T - LT, T);
 }
 
 static inline int RENAME(get_context)(PlaneContext *p, TYPE *src,
                                       TYPE *last, TYPE *last2)
 {
     const int LT = last[-1];
     const int T  = last[0];
     const int RT = last[1];
     const int L  = src[-1];
 
     if (p->quant_table[3][127]) {
         const int TT = last2[0];
         const int LL = src[-2];
         return p->quant_table[0][(L - LT) & 0xFF] +
                p->quant_table[1][(LT - T) & 0xFF] +
                p->quant_table[2][(T - RT) & 0xFF] +
                p->quant_table[3][(LL - L) & 0xFF] +
                p->quant_table[4][(TT - T) & 0xFF];
     } else
         return p->quant_table[0][(L - LT) & 0xFF] +
                p->quant_table[1][(LT - T) & 0xFF] +
                p->quant_table[2][(T - RT) & 0xFF];
 }