global.h

H.264视频编解码的标准测试模型

/*!
 ************************************************************************
 *  \file
 *     global.h
 *
 *  \brief
 *     global definitions for for H.264 encoder.
 *
 *  \author
 *     Copyright (C) 1999  Telenor Satellite Services,Norway
 *                         Ericsson Radio Systems, Sweden
 *
 *     Inge Lille-Langoy               <[e-mail]>
 *
 *     Telenor Satellite Services
 *     Keysers gt.13                       tel.:   [phone]
 *     N-0130 Oslo,Norway                  fax.:   [phone]
 *
 *     Rickard Sjoberg                 <[e-mail]>
 *
 *     Ericsson Radio Systems
 *     KI/ERA/T/VV
 *     164 80 Stockholm, Sweden
 *
 ************************************************************************
 */
#ifndef _GLOBAL_H_
#define _GLOBAL_H_

#include <stdio.h>

#include "defines.h"
#include "parsetcommon.h"
#include "q_matrix.h"
#include "q_offsets.h"
#include "minmax.h"

#ifdef WIN32
  #define  snprintf _snprintf
#endif

#if defined(WIN32) && !defined(__GNUC__)
  typedef __int64   int64;
#ifndef INT64_MIN
# define INT64_MIN        (-9223372036854775807i64 - 1i64)
#endif
#else
  typedef long long int64;
#ifndef INT64_MIN
# define INT64_MIN        (-9223372036854775807LL - 1LL)
#endif
#endif

#ifdef WIN32
#define  snprintf _snprintf
#define  open     _open
#define  close    _close
#define  read     _read
#define  write    _write
#define  lseek    _lseeki64
#define  fsync    _commit
#define  OPENFLAGS_WRITE _O_WRONLY|_O_CREAT|_O_BINARY|_O_TRUNC
#define  OPEN_PERMISSIONS _S_IREAD | _S_IWRITE
#define  OPENFLAGS_READ  _O_RDONLY|_O_BINARY
#else
#define  OPENFLAGS_WRITE O_WRONLY|O_CREAT|O_TRUNC
#define  OPENFLAGS_READ  O_RDONLY
#define  OPEN_PERMISSIONS S_IRUSR | S_IWUSR
#endif


/***********************************************************************
 * T y p e    d e f i n i t i o n s    f o r    T M L
 ***********************************************************************
 */

//#define pel_t byte

#define imgpel unsigned short
#define distpel int
//#define imgpel byte
//#define distpel unsigned short

#define pel_t imgpel

//! Data Partitioning Modes
typedef enum
{
  PAR_DP_1,   //!< no data partitioning is supported
  PAR_DP_3    //!< data partitioning with 3 partitions
} PAR_DP_TYPE;


//! Output File Types
typedef enum
{
  PAR_OF_ANNEXB,    //!< Annex B byte stream format
  PAR_OF_RTP       //!< RTP packets in outfile
} PAR_OF_TYPE;

//! Field Coding Types
typedef enum 
{
  FRAME_CODING,
  FIELD_CODING,
  ADAPTIVE_CODING
} CodingType;

//! definition of H.264 syntax elements
typedef enum 
{
  SE_HEADER,
  SE_PTYPE,
  SE_MBTYPE,
  SE_REFFRAME,
  SE_INTRAPREDMODE,
  SE_MVD,
  SE_CBP_INTRA,
  SE_LUM_DC_INTRA,
  SE_CHR_DC_INTRA,
  SE_LUM_AC_INTRA,
  SE_CHR_AC_INTRA,
  SE_CBP_INTER,
  SE_LUM_DC_INTER,
  SE_CHR_DC_INTER,
  SE_LUM_AC_INTER,
  SE_CHR_AC_INTER,
  SE_DELTA_QUANT_INTER,
  SE_DELTA_QUANT_INTRA,
  SE_BFRAME,
  SE_EOS,
  SE_MAX_ELEMENTS  //!< number of maximum syntax elements
} SE_type;         // substituting the definitions in elements.h


typedef enum 
{
  INTER_MB,
  INTRA_MB_4x4,
  INTRA_MB_16x16
} IntraInterDecision;


typedef enum 
{
  BITS_HEADER,
  BITS_TOTAL_MB,
  BITS_MB_MODE,
  BITS_INTER_MB,
  BITS_CBP_MB,
  BITS_COEFF_Y_MB,
  BITS_COEFF_UV_MB,
  BITS_DELTA_QUANT_MB,
  MAX_BITCOUNTER_MB
} BitCountType;


typedef enum 
{
  NO_SLICES,
  FIXED_MB,
  FIXED_RATE,
  CALLBACK,
  FMO
} SliceMode;


typedef enum 
{
  UVLC,
  CABAC
} SymbolMode;


typedef enum 
{
  FRAME,
  TOP_FIELD,
  BOTTOM_FIELD
} PictureStructure;           //!< New enum for field processing

typedef enum 
{
  P_SLICE = 0,
  B_SLICE,
  I_SLICE,
  SP_SLICE,
  SI_SLICE
} SliceType;

/***********************************************************************
 * D a t a    t y p e s   f o r  C A B A C
 ***********************************************************************
 */

//! struct to characterize the state of the arithmetic coding engine
typedef struct
{
  unsigned int  Elow, Erange;
  unsigned int  Ebuffer;
  unsigned int  Ebits_to_go;
  unsigned int  Ebits_to_follow;
  byte          *Ecodestrm;
  int           *Ecodestrm_len;
  int           C;
  int           E;

  // storage in case of recode MB
  unsigned int  ElowS, ErangeS;
  unsigned int  EbufferS;
  unsigned int  Ebits_to_goS;
  unsigned int  Ebits_to_followS;
  byte          *EcodestrmS;
  int           *Ecodestrm_lenS;
  int           CS;
  int           ES;
} EncodingEnvironment;

typedef EncodingEnvironment *EncodingEnvironmentPtr;

//! struct for context management
typedef struct
{
  unsigned short state;         // index into state-table CP  
  unsigned char  MPS;           // Least Probable Symbol 0/1 CP

  unsigned long  count;

} BiContextType;

typedef BiContextType *BiContextTypePtr;


/**********************************************************************
 * C O N T E X T S   F O R   T M L   S Y N T A X   E L E M E N T S
 **********************************************************************
 */


#define NUM_MB_TYPE_CTX  11
#define NUM_B8_TYPE_CTX  9
#define NUM_MV_RES_CTX   10
#define NUM_REF_NO_CTX   6
#define NUM_DELTA_QP_CTX 4
#define NUM_MB_AFF_CTX 4

#define NUM_TRANSFORM_SIZE_CTX 3

typedef struct
{
  BiContextType mb_type_contexts [3][NUM_MB_TYPE_CTX];
  BiContextType b8_type_contexts [2][NUM_B8_TYPE_CTX];
  BiContextType mv_res_contexts  [2][NUM_MV_RES_CTX];
  BiContextType ref_no_contexts  [2][NUM_REF_NO_CTX];
  BiContextType delta_qp_contexts   [NUM_DELTA_QP_CTX];
  BiContextType mb_aff_contexts     [NUM_MB_AFF_CTX];
  BiContextType transform_size_contexts   [NUM_TRANSFORM_SIZE_CTX];
} MotionInfoContexts;


#define NUM_IPR_CTX    2
#define NUM_CIPR_CTX   4
#define NUM_CBP_CTX    4
#define NUM_BCBP_CTX   4
#define NUM_MAP_CTX   15
#define NUM_LAST_CTX  15
#define NUM_ONE_CTX    5
#define NUM_ABS_CTX    5


typedef struct
{
  BiContextType  ipr_contexts [NUM_IPR_CTX]; 
  BiContextType  cipr_contexts[NUM_CIPR_CTX]; 
  BiContextType  cbp_contexts [3][NUM_CBP_CTX];
  BiContextType  bcbp_contexts[NUM_BLOCK_TYPES][NUM_BCBP_CTX];
  BiContextType  map_contexts [NUM_BLOCK_TYPES][NUM_MAP_CTX];
  BiContextType  last_contexts[NUM_BLOCK_TYPES][NUM_LAST_CTX];
  BiContextType  one_contexts [NUM_BLOCK_TYPES][NUM_ONE_CTX];
  BiContextType  abs_contexts [NUM_BLOCK_TYPES][NUM_ABS_CTX];
  BiContextType  fld_map_contexts [NUM_BLOCK_TYPES][NUM_MAP_CTX];
  BiContextType  fld_last_contexts[NUM_BLOCK_TYPES][NUM_LAST_CTX];
} TextureInfoContexts;

//*********************** end of data type definition for CABAC *******************

typedef struct pix_pos
{
  int available;
  int mb_addr;
  int x;
  int y;
  int pos_x;
  int pos_y;
} PixelPos;

/*! Buffer structure for RMPNI commands */
typedef struct RMPNIbuffer_s
{
  int RMPNI;
  int Data;
  struct RMPNIbuffer_s *Next;
} RMPNIbuffer_t;

/*! Buffer structure for decoded referenc picture marking commands */
typedef struct DecRefPicMarking_s
{
  int memory_management_control_operation;
  int difference_of_pic_nums_minus1;
  int long_term_pic_num;
  int long_term_frame_idx;
  int max_long_term_frame_idx_plus1;
  struct DecRefPicMarking_s *Next;
} DecRefPicMarking_t;

//! Syntaxelement
typedef struct syntaxelement
{
  int                 type;           //!< type of syntax element for data part.
  int                 value1;         //!< numerical value of syntax element
  int                 value2;         //!< for blocked symbols, e.g. run/level
  int                 len;            //!< length of code
  int                 inf;            //!< info part of UVLC code
  unsigned int        bitpattern;     //!< UVLC bitpattern
  int                 context;        //!< CABAC context
  int                 k;              //!< CABAC context for coeff_count,uv

#if TRACE
  #define             TRACESTRING_SIZE 100            //!< size of trace string
  char                tracestring[TRACESTRING_SIZE];  //!< trace string
#endif

  //!< for mapping of syntaxElement to UVLC
  void    (*mapping)(int value1, int value2, int* len_ptr, int* info_ptr);
  //!< used for CABAC: refers to actual coding method of each individual syntax element type
  void    (*writing)(struct syntaxelement *, EncodingEnvironmentPtr);

} SyntaxElement;

//! Macroblock
typedef struct macroblock
{
  int                 currSEnr;                   //!< number of current syntax element
  int                 slice_nr;
  int                 delta_qp;
  int                 qp ;
  int                 qpsp ;
  int                 bitcounter[MAX_BITCOUNTER_MB];

  struct macroblock   *mb_available_up;   //!< pointer to neighboring MB (CABAC)
  struct macroblock   *mb_available_left; //!< pointer to neighboring MB (CABAC)

  int                 mb_type;
  int                 mvd[2][BLOCK_MULTIPLE][BLOCK_MULTIPLE][2];          //!< indices correspond to [forw,backw][block_y][block_x][x,y]
  char                intra_pred_modes[MB_BLOCK_PARTITIONS];
  char                intra_pred_modes8x8[MB_BLOCK_PARTITIONS];                             //!< four 8x8 blocks in a macroblock
  int                 cbp ;
  int64               cbp_blk ;    //!< 1 bit set for every 4x4 block with coefs (not implemented for INTRA)
  int                 b8mode[4];
  int                 b8pdir[4];
  int64               cbp_bits;

  int                 c_ipred_mode;      //!< chroma intra prediction mode
  int                 IntraChromaPredModeFlag;
  
  int                 mb_field;