/***************************************************************************
 *
 * Modul       :  defines.h
 *
 * Author      :  Detlev Marpe
 *
 * Date        :  21. March 2001
 *
 * Description :  Headerfile containing some useful global definitions
 *                
 *      Copyright (C) 2000 HEINRICH HERTZ INSTITUTE All Rights Reserved.
 *		  
 **************************************************************************/


#ifndef _DEFINES_H_
#define _DEFINES_H_

#define VCEG_M79_PICTURE_HEADER

#define CHROMA_CHANGE
#define NO_RDQUANT

#define UMV

#define _FAST_FULL_ME_
#define _FULL_SEARCH_RANGE_
#define _ADAPT_LAST_GROUP_
#define _CHANGE_QP_
#define _RD_OPT_
#define _ADDITIONAL_REFERENCE_FRAME_

// The fast integer search is implemented for UMV only
#ifdef  _FAST_FULL_ME_
#define UMV
#endif


//
// The purpose of the following is to force the use of CHROMA_CHANGE and RD_QUANT
// together, because this is how it is unfortunately implemented in block.c 
// (dct_chroma())  StW, 5/10/01.  

#ifdef CHROMA_CHANGE
#define NO_RDQUANT
#endif
#ifdef NO_RDQUANT
#define CHROMA_CHANGE
#endif


#define TRACE           0       /* 0:Trace off 1:Trace on*/

#define absm(A) ((A)<(0) ? (-(A)):(A)) /* abs macro, faster than procedure */
#define MAX_VALUE       999999   /* used for start value for some variables */

/* Picture types  */
#define INTRA_IMG       0   /* I frame    */
#define INTER_IMG       1   /* P frame    */
#define B_IMG			2   /* B frame    */


/* inter MB modes */
#define COPY_MB         0        /* just copy last MB, no motion vectors */
#define M16x16_MB       1        /* 16 x 16 block */
#define M16x8_MB        2
#define M8x16_MB        3
#define M8x8_MB         4
#define M8x4_MB         5
#define M4x8_MB         6
#define M4x4_MB         7

/* imod constants */
#define INTRA_MB_OLD    0       /* new intra prediction mode in inter frame         */
#define INTRA_MB_NEW    1       /* 'old' intra prediction mode in inter frame       */
#define INTRA_MB_INTER  2       /* Intra MB in inter frame, use the constants above */

/* B pictures : img->imod */
#define B_Forward       3
#define B_Backward      4
#define B_Bidirect      5
#define B_Direct        6

#define BLOCK_SIZE      4
#define MB_BLOCK_SIZE   16

#ifdef USE_9_INTRA_MODES
// These are the defines used when implementing RealNetworks 9 Intra Modes

#define NO_INTRA_PMODE  9        /* #intra prediction modes */
/* 4x4 intra prediction modes */
#define DC_PRED         0
#define VERT_PRED       1
#define HOR_PRED        2
#define DIAG_PRED_SE    3
#define DIAG_PRED_NE    4
#define DIAG_PRED_SSE   5
#define DIAG_PRED_NNE   6
#define DIAG_PRED_ENE   7
#define DIAG_PRED_ESE   8

#else

#define NO_INTRA_PMODE  6        /* #intra prediction modes */
/* 4x4 intra prediction modes */
#define DC_PRED         0
#define DIAG_PRED_RL    1
#define VERT_PRED       2
#define DIAG_PRED_LR_45 3
#define HOR_PRED        4
#define DIAG_PRED_LR    5

#endif

/* 16x16 intra prediction modes */
#define VERT_PRED_16    0
#define HOR_PRED_16     1
#define DC_PRED_16      2
#define PLANE_16        3

/* image formats*/
#define SUB_QCIF        0       /* GH added picture formats*/
#define QCIF            1
#define CIF             2
#define CIF_4           3       /* GH added picture formats*/
#define CIF_16          4       /* GH added picture formats*/
#define CUSTOM          5       /* GH added picture formats*/

/* QCIF format */
#define IMG_WIDTH       176
#define IMG_HEIGHT      144
#define IMG_WIDTH_CR    88
#define IMG_HEIGHT_CR   72

#define INIT_FRAME_RATE 30
#define LEN_STARTCODE   31        /* length of start code */
//#define MAX_MULT_PRED   5         /* max number of frames to make inter prediction from */
#define EOS             1         /* End Of Sequence */


#define MVPRED_MEDIAN   0
#define MVPRED_L        1
#define MVPRED_U        2
#define MVPRED_UR       3


#define	BLOCK_MULTIPLE			(MB_BLOCK_SIZE/BLOCK_SIZE)

#define MAX_SYMBOLS_PER_MB	600	/* Maximum number of different syntax elements for one MB */

#define MAX_PART_NR			8	/* Maximum number of different data partitions */ 
													/* Some reasonable number which should reflect */
													/* what is currently defined in the SE2Partition map (elements.h) */

#define MAXPICTURETYPESEQUENCELEN	100		/* Maximum size of the string that defines the picture
												types to be coded, e.g. "IBBPBBPBB" */
#endif