defines.h

MPEG-4编解码的实现(包括MPEG4视音频编解码)

/*
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* COPYRIGHT AND WARRANTY INFORMATION
*
* Copyright 2001, International Telecommunications Union, Geneva
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/*!
 **************************************************************************
 * \file defines.h
 *
 * \brief
 *    Headerfile containing some useful global definitions
 *
 * \author
 *    Detlev Marpe                                                        \n
 *    Copyright (C) 2000 HEINRICH HERTZ INSTITUTE All Rights Reserved.
 *
 * \date
 *    21. March 2001
 **************************************************************************
 */


#ifndef _DEFINES_H_
#define _DEFINES_H_

#define VCEG_M79_PICTURE_HEADER

#define NO_RDQUANT

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

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

#define TRACE           1        //!< 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
#define SP_IMG          3   //!< SP 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

#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

// 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  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