www.pudn.com > AvsVideoCodec.rar > avs.h
/*
*****************************************************************************
* COPYRIGHT AND WARRANTY INFORMATION
*
* Copyright 2003, Advanced Audio Video Coding Standard, Part II
*
* DISCLAIMER OF WARRANTY
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
* License for the specific language governing rights and limitations under
* the License.
*
* THIS IS NOT A GRANT OF PATENT RIGHTS - SEE THE AVS PATENT POLICY.
* The AVS Working Group doesn't represent or warrant that the programs
* furnished here under are free of infringement of any third-party patents.
* Commercial implementations of AVS, including shareware, may be
* subject to royalty fees to patent holders. Information regarding
* the AVS patent policy for standardization procedure is available at
* AVS Web site http://www.avs.org.cn. Patent Licensing is outside
* of AVS Working Group.
*
* The Original Code is Reference Software for China National Standard
* GB/T 20090.2-2006 (short for AVS-P2 or AVS Video) at version RM52J.
*
* The Initial Developer of the Original Code is Video subgroup of AVS
* Workinggroup (Audio and Video coding Standard Working Group of China).
* Contributors: Guoping Li, Siwei Ma, Jian Lou, Qiang Wang ,
* Jianwen Chen,Haiwu Zhao, Xiaozhen Zheng, Junhao Zheng, Zhiming Wang
*
******************************************************************************
*/
/*
*************************************************************************************
* File name:
* Function:
*
*************************************************************************************
*/
#ifndef _AVS_TRANSFORM_H_
#define _AVS_TRANSFORM_H_
#include "global.h"
#include "defines.h"
#define NUM_2D_TABLES 4
#define CODE2D_ESCAPE_SYMBOL 59
// ========================================================
// external variables
// ========================================================
extern const int AVS_matrix[8][8]; //!< AVS transform matrices
extern const int AVS_Q[QUANT_PERIOD][6]; //!< AVS Quantization table
extern const int AVS_R[QUANT_PERIOD][6]; //!< AVS De-Quantization table
extern const int AVS_QMAP[4][4]; //!< AVS mapping the proper Q value for coefficient position
extern const int AVS_QF[4][2]; //!< AVS rounding factor
extern const int AVS_N[2]; //!< AVS quantization normalization
extern const int AVS_SHIFT0[2][2]; //!< AVS bit shift needed after transform step to stay inside 16 bits.
extern const int AVS_SCAN[2][64][2]; //!< AVS scan positions. Positions are stored as (pix,lin).
extern const int AVS_COEFF_COST[64]; //!< TML COEFF_COST 'stretched' for AVS
extern const char AVS_2D_VLC[NUM_2D_TABLES][16][8]; // Inter, Intra0-13, Intra14-21, Intra22-31
extern const unsigned short int cbp_blk_masks[4];
extern char AVS_2D_VLC_dec[NUM_2D_TABLES][64][2]; // inverse of last table. generated automatically in read_coef_AVS()
extern char ABT_2D_CVLC_I_dec[6][64][2];
extern char ABT_2D_CVLC_P_dec[6][64][2];
extern char ABT_2D_CVLC_B_dec[6][64][2];
extern const char ABT_2D_CVLC_I[6][25][25];
extern const char ABT_2D_CVLC_P[6][25][25];
extern const char ABT_2D_CVLC_B[6][25][25];
// ========================================================
// typedefs
// ========================================================
typedef enum
{
PIX,
LIN
} Direction;
// ========================================================
// functions
// ========================================================
void transform_B8 (short curr_blk[B8_SIZE][B8_SIZE]);
void inv_transform_B8 (short curr_blk[B8_SIZE][B8_SIZE]);
void quant_B8 (int qp, int mode, short curr_blk[B8_SIZE][B8_SIZE]);
int scanquant_B8 (int qp, int mode, int b8, short curr_blk[B8_SIZE][B8_SIZE], int scrFlag, int *cbp, int *cbp_blk);
int find_sad_8x8 (int iMode, int iSizeX, int iSizeY, int iOffX, int iOffY, int m7[MB_BLOCK_SIZE][MB_BLOCK_SIZE]);
int sad_hadamard (int iSizeX, int iSizeY, int iOffX, int iOffY, int m7[MB_BLOCK_SIZE][MB_BLOCK_SIZE]);
int writeLumaCoeffAVS_B8 (int b8,int intra,int blk_off_x,int blk_off_y);
void setDirectModeAVS (int block8x8,struct img_par *img);
int getDirectModeAVS (int block8x8,struct img_par *img);
void copyblock_SP_AVS (int b8);
void get_quant_consts (int qp,int intra,int Q[4][4],int Qrshift[4][4],int qp_const[4][4]);
void get_curr_blk( int block8x8,struct img_par *img, short curr_blk[B8_SIZE][B8_SIZE]);
void idct_dequant_AVS_sp(int block8x8,
int curr_blk[B8_SIZE][B8_SIZE],
struct img_par *img
);
void idct_dequant_AVS_B8(int block8x8,
int qp, // Quantization parameter
int curr_blk[B8_SIZE][B8_SIZE],
struct img_par *img
);
void idct_dequant_AVS_B8_Chroma(int block8x8,
int qp, // Quantization parameter
int curr_blk[B8_SIZE][B8_SIZE],
struct img_par *img
);
int intrapred_AVS(struct img_par *img,int img_x,int img_y);
int Mode_Decision_for_AVS_IntraBlocks(int b8,double lambda,int *min_cost);
double RDCost_for_AVSIntraBlocks(int *nonzero,int b8,int ipmode,double lambda,double min_rdcost,int mostProbableMode);
void readLumaCoeffAVS_B8(int block8x8, struct inp_par *inp, struct img_par *img);
void readChromaCoeffAVS_B8(int block8x8, struct inp_par *inp, struct img_par *img);
#endif // _AVS_TRANSFORM_H_