/*

  * H.261 codec

  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  * Copyright (c) 2004 Maarten Daniels
  *
  * 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

  * H.261 codec.

  */
 

 #ifndef AVCODEC_H261_H
 #define AVCODEC_H261_H

 #include "mpegvideo.h"

 #include "rl.h"

 
 /**
  * H261Context
  */

 typedef struct H261Context {

     MpegEncContext s;
 
     int current_mba;
     int mba_diff;
     int mtype;
     int current_mv_x;
     int current_mv_y;
     int gob_number;
     int gob_start_code_skipped; // 1 if gob start code is already read before gob header is read

 } H261Context;

 #define MB_TYPE_H261_FIL 0x800000

 extern uint8_t ff_h261_rl_table_store[2][2 * MAX_RUN + MAX_LEVEL + 3];

 extern const uint8_t ff_h261_mba_code[35];
 extern const uint8_t ff_h261_mba_bits[35];
 extern const uint8_t ff_h261_mtype_code[10];
 extern const uint8_t ff_h261_mtype_bits[10];
 extern const int     ff_h261_mtype_map[10];
 extern const uint8_t ff_h261_mv_tab[17][2];
 extern const uint8_t ff_h261_cbp_tab[63][2];
 extern RLTable ff_h261_rl_tcoeff;
 

 void ff_h261_loop_filter(MpegEncContext *s);

 void ff_h261_common_init(void);

 
 int ff_h261_get_picture_format(int width, int height);
 void ff_h261_reorder_mb_index(MpegEncContext *s);
 void ff_h261_encode_mb(MpegEncContext *s, int16_t block[6][64],
                        int motion_x, int motion_y);
 void ff_h261_encode_picture_header(MpegEncContext *s, int picture_number);
 void ff_h261_encode_init(MpegEncContext *s);
 

 #endif /* AVCODEC_H261_H */