/*
***********************************************************************
* COPYRIGHT AND WARRANTY INFORMATION
*
* Copyright 2001, International Telecommunications Union, Geneva
*
* DISCLAIMER OF WARRANTY
*
* These software programs are available to the user without any
* license fee or royalty on an "as is" basis. The ITU disclaims
* any and all warranties, whether express, implied, or
* statutory, including any implied warranties of merchantability
* or of fitness for a particular purpose.  In no event shall the
* contributor or the ITU be liable for any incidental, punitive, or
* consequential damages of any kind whatsoever arising from the
* use of these programs.
*
* This disclaimer of warranty extends to the user of these programs
* and user's customers, employees, agents, transferees, successors,
* and assigns.
*
* The ITU does not represent or warrant that the programs furnished
* hereunder are free of infringement of any third-party patents.
* Commercial implementations of ITU-T Recommendations, including
* shareware, may be subject to royalty fees to patent holders.
* Information regarding the ITU-T patent policy is available from
* the ITU Web site at http://www.itu.int.
*
* THIS IS NOT A GRANT OF PATENT RIGHTS - SEE THE ITU-T PATENT POLICY.
************************************************************************
*/

/*!
 **************************************************************************
 * \file defines.h
 *
 * \brief
 *    Headerfile containing some useful global definitions
 *
 * \author
 *    Detlev Marpe 
 *    Copyright (C) 2000 HEINRICH HERTZ INSTITUTE All Rights Reserved.
 *
 * \date
 *    21. March 2001
 **************************************************************************
 */


#ifndef _DEFINES_H_
#define _DEFINES_H_


// CAVLC
#define LUMA              0
#define LUMA_INTRA16x16DC 1
#define LUMA_INTRA16x16AC 2

#define LEVEL_NUM      6
#define TOTRUN_NUM    15
#define RUNBEFORE_NUM  7




//--- block types for CABAC
#define LUMA_16DC       0
#define LUMA_16AC       1
#define LUMA_8x8        2
#define LUMA_8x4        3
#define LUMA_4x8        4
#define LUMA_4x4        5
#define CHROMA_DC       6
#define CHROMA_AC       7
#define NUM_BLOCK_TYPES 8

#define NEW_CONSTRAINT_AC

#define _EXP_GOLOMB

#define clamp(a,b,c) ( (a)<(b) ? (b) : ((a)>(c)?(c):(a)) )    //!< clamp a to the range of [b;c]


// Constants for the interim file format
#define WORKING_DRAFT_MAJOR_NO 0    // inidicate the working draft version number
#define WORKING_DRAFT_MINOR_NO 4
#define INTERIM_FILE_MAJOR_NO 0     // indicate interim file format version number
#define INTERIM_FILE_MINOR_NO 1

#define _FAST_FULL_ME_
#define _FULL_SEARCH_RANGE_
#define _ADAPT_LAST_GROUP_
#define _CHANGE_QP_
#define _ADDITIONAL_REFERENCE_FRAME_
#define _LEAKYBUCKET_

// #define _CHECK_MULTI_BUFFER_1_
// #define _CHECK_MULTI_BUFFER_2_


#define IMG_PAD_SIZE    4   //!< Number of pixels padded around the reference frame (>=4)

#if defined _DEBUG
#define TRACE           1   //!< 0:Trace off 1:Trace on
#else
#define TRACE           0   //!< 0:Trace off 1:Trace on
#endif

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



// ---------------------------------------------------------------------------------
// FLAGS and DEFINES for ABT.
#define INI_CTX         1       //!< use initialization values for all CABAC contexts. 0=off, 1=on
#define INICNT_ABT      64      // max_count for ABT contexts if INI_CTX = 0

#define B8_SIZE         8       // maximum block size of block transformed by ABT. 020308 mwi
#define WHOLE_BLK      -1       // signal application on all subblocks for ABT routines. 020308 mwi
#define ABT_OFF        -1
#define QUANT_PERIOD    6       // mantissa/exponent quantization, step size doubles every QUANT_PERIOD qp
#define _ALT_SCAN_              // use GI scan from JVT-C140 for field coding
#define QP_OFS         -12      // workaround to use old qp-design for ABT routines
#define _CD_4x4VALUES_          // use baseline 4x4 quantization values
//#define _ABT_FLAG_IN_SLICE_HEADER_ // write ABT flag to slice header (needs fix)
// ---------------------------------------------------------------------------------


#define P8x8    8
#define I4MB    9
#define I16MB   10
#define IBLOCK  11
#define SI4MB   12
#define MAXMODE 13

#define  LAMBDA_ACCURACY_BITS         16
#define  LAMBDA_FACTOR(lambda)        ((int)((double)(1<<LAMBDA_ACCURACY_BITS)*lambda+0.5))
#define  WEIGHTED_COST(factor,bits)   (((factor)*(bits))>>LAMBDA_ACCURACY_BITS)
#define  MV_COST(f,s,cx,cy,px,py)     (WEIGHTED_COST(f,mvbits[((cx)<<(s))-px]+mvbits[((cy)<<(s))-py]))
#define  REF_COST(f,ref)              (WEIGHTED_COST(f,refbits[(ref)]))


#define IS_INTRA(MB)    ((MB)->mb_type==I4MB  || (MB)->mb_type==I16MB)
#define IS_NEWINTRA(MB) ((MB)->mb_type==I16MB)
#define IS_OLDINTRA(MB) ((MB)->mb_type==I4MB)
#define IS_INTER(MB)    ((MB)->mb_type!=I4MB  && (MB)->mb_type!=I16MB)
#define IS_INTERMV(MB)  ((MB)->mb_type!=I4MB  && (MB)->mb_type!=I16MB  && (MB)->mb_type!=0)
#define IS_DIRECT(MB)   ((MB)->mb_type==0     && img ->   type==B_IMG)
#define IS_COPY(MB)     ((MB)->mb_type==0     && img ->   type==INTER_IMG);
#define IS_P8x8(MB)     ((MB)->mb_type==P8x8)

//#define _OLDSTYLEQP_
// Quantization parameter range
#ifndef _OLDSTYLEQP_

#define MIN_QP          0
#define MAX_QP          52
#define SHIFT_QP        12

#else

#define MIN_QP          -12
#define MAX_QP          39
#define SHIFT_QP        0

#endif

// Picture types
#define INTRA_IMG       0   //!< I frame
#define INTER_IMG       1   //!< P frame
#define B_IMG           2   //!< B frame
#define SP_IMG          3   //!< SP frame


#define BLOCK_SIZE      4
#define MB_BLOCK_SIZE   16

#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

// 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 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  1200  //!< Maximum number of different syntax elements for one MB
									                // CAVLC needs more symbols per 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" */
//Start code and Emulation Prevention need this to be defined in identical manner at encoder and decoder
#define ZEROBYTES_SHORTSTARTCODE 1 //indicates the number of zero bytes in the short start-code prefix
#endif

