/*

  * Copyright (c) 2002 The FFmpeg Project

  *
  * 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_WMV2_H
 #define AVCODEC_WMV2_H

 
 #include "avcodec.h"
 #include "intrax8.h"

 #include "mpegvideo.h"

 #include "wmv2dsp.h"

 
 #define SKIP_TYPE_NONE 0
 #define SKIP_TYPE_MPEG 1
 #define SKIP_TYPE_ROW  2
 #define SKIP_TYPE_COL  3
 
 

 typedef struct Wmv2Context {

     MpegEncContext s;
     IntraX8Context x8;

     WMV2DSPContext wdsp;

     int j_type_bit;
     int j_type;
     int abt_flag;
     int abt_type;
     int abt_type_table[6];
     int per_mb_abt;
     int per_block_abt;
     int mspel_bit;
     int cbp_table_index;
     int top_left_mv_flag;
     int per_mb_rl_bit;
     int skip_type;
     int hshift;
 
     ScanTable abt_scantable[2];

     DECLARE_ALIGNED(32, int16_t, abt_block2)[6][64];

 } Wmv2Context;

 void ff_wmv2_common_init(Wmv2Context *w);

 int ff_wmv2_decode_mb(MpegEncContext *s, int16_t block[6][64]);
 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
 void ff_wmv2_encode_mb(MpegEncContext * s, int16_t block[6][64],
                        int motion_x, int motion_y);
 int ff_wmv2_decode_picture_header(MpegEncContext * s);
 int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
 void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64],
                     uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
 
 void ff_mspel_motion(MpegEncContext *s,
                      uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
                      uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
                      int motion_x, int motion_y, int h);
 

 static av_always_inline int wmv2_get_cbp_table_index(MpegEncContext *s, int cbp_index)
 {
     static const uint8_t map[3][3] = {
         { 0, 2, 1 },
         { 1, 0, 2 },
         { 2, 1, 0 },
     };
 
     return map[(s->qscale > 10) + (s->qscale > 20)][cbp_index];
 }
 

 #endif /* AVCODEC_WMV2_H */