text: /*
   * Copyright (c) 2002 The Libav Project
   *
   * This file is part of Libav.
   *
   * Libav 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.
   *
   * Libav 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 Libav; 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(16, 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);
  
  #endif /* AVCODEC_WMV2_H */
  