/***************************************************************************
 *
 * Modul       :  rdopt.h
 * Author      :  Heiko Schwarz  <hschwarz@hhi.de>
 * Date        :  12. April 2001
 *
 * Description :  Headerfile for RD-optimized mode decision
 * 	  
 **************************************************************************/


#ifndef _RD_OPT_H_
#define _RD_OPT_H_

#include "global.h"
#include "elements.h"
#include "rdopt_coding_state.h"



/*===== MACROBLOCK MODE CONSTANTS =====*/
#define  MBMODE_COPY            0
#define  MBMODE_INTER16x16      1
#define  MBMODE_INTER4x4        7
#define  MBMODE_BACKWARD16x16   8
#define  MBMODE_BACKWARD4x4    14
#define  MBMODE_BIDIRECTIONAL  15
#define  MBMODE_DIRECT         16
#define  MBMODE_INTRA16x16     17
#define  MBMODE_INTRA4x4       18
/*-----------------------------*/
#define  NO_MAX_MBMODES        19
#define  NO_INTER_MBMODES       7



typedef struct {
  double  rdcost;
  long    distortion;
  long    distortion_UV;
  int     rate_mode;
  int     rate_motion;
  int     rate_cbp;
  int     rate_luma;
  int     rate_chroma;
} RateDistortion;



typedef struct {

  /*=== lagrange multipliers ===*/
  double   lambda_intra;
  double   lambda_motion;
  double   lambda_mode;

  /*=== cost, distortion and rate for 4x4 intra modes ===*/
  int      best_mode_4x4     [4][4];
  double   min_rdcost_4x4    [4][4];
  double   rdcost_4x4        [4][4][NO_INTRA_PMODE];
  long     distortion_4x4    [4][4][NO_INTRA_PMODE];
  int      rate_imode_4x4    [4][4][NO_INTRA_PMODE];
  int      rate_luma_4x4     [4][4][NO_INTRA_PMODE];

  /*=== stored variables for "best" macroblock mode ===*/
  double   min_rdcost;
  int      best_mode;
  int      ref_or_i16mode;
  int      blocktype;
  int      blocktype_back;
  byte     rec_mb_Y     [16][16];
  byte     rec_mb_U     [ 8][ 8];
  byte     rec_mb_V     [ 8][ 8];
  int      ipredmode    [16];
  int      cbp;
  int      kac;
  int      cof          [4][6][18][2][2];
  int      cofu         [5][2][2];
  int      mv           [4][4][2];
  int      bw_mv        [4][4][2];

} RDOpt;

#endif