/*
  * Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
  * Copyright (C) 2006 Robert Edele <yartrebo@earthlink.net>
  *

  * 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
  */
 

 #ifndef AVCODEC_SNOW_H
 #define AVCODEC_SNOW_H

 
 #include "dsputil.h"

 #include "dwt.h"

 
 #define MID_STATE 128
 
 #define MAX_PLANES 4
 #define QSHIFT 5
 #define QROOT (1<<QSHIFT)
 #define LOSSLESS_QLOG -128

 #define FRAC_BITS 4

 #define MAX_REF_FRAMES 8

 #define LOG2_OBMC_MAX 8

 #define OBMC_MAX (1<<(LOG2_OBMC_MAX))
 

 /* C bits used by mmx/sse2/altivec */
 

 static av_always_inline void snow_interleave_line_header(int * i, int width, IDWTELEM * low, IDWTELEM * high){

     (*i) = (width) - 2;
 
     if (width & 1){
         low[(*i)+1] = low[((*i)+1)>>1];
         (*i)--;
     }
 }
 

 static av_always_inline void snow_interleave_line_footer(int * i, IDWTELEM * low, IDWTELEM * high){

     for (; (*i)>=0; (*i)-=2){
         low[(*i)+1] = high[(*i)>>1];
         low[*i] = low[(*i)>>1];
     }
 }
 

 static av_always_inline void snow_horizontal_compose_lift_lead_out(int i, IDWTELEM * dst, IDWTELEM * src, IDWTELEM * ref, int width, int w, int lift_high, int mul, int add, int shift){

     for(; i<w; i++){
         dst[i] = src[i] - ((mul * (ref[i] + ref[i + 1]) + add) >> shift);
     }
 
     if((width^lift_high)&1){
         dst[w] = src[w] - ((mul * 2 * ref[w] + add) >> shift);
     }
 }
 

 static av_always_inline void snow_horizontal_compose_liftS_lead_out(int i, IDWTELEM * dst, IDWTELEM * src, IDWTELEM * ref, int width, int w){

         for(; i<w; i++){

             dst[i] = src[i] + ((ref[i] + ref[(i+1)]+W_BO + 4 * src[i]) >> W_BS);

         }
 
         if(width&1){

             dst[w] = src[w] + ((2 * ref[w] + W_BO + 4 * src[w]) >> W_BS);

         }
 }
 

 #endif /* AVCODEC_SNOW_H */