vlc.h

AVS视频编解码器 能实现视频图像的高效率压缩 能在ＶＣ上高速运行

/*
***********************************************************************
* COPYRIGHT AND WARRANTY INFORMATION
*
* Copyright 2003, Advanced Audio Video Coding Standard, Part II
*
* DISCLAIMER OF WARRANTY
*
* These software programs are available to the users without any
* license fee or royalty on an "as is" basis. The AVS 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 contributors or 
* the AVS be liable for any incidental, punitive, or consequential
* damages of any kind whatsoever arising from the use of this program.
*
* This disclaimer of warranty extends to the user of this program
* and user's customers, employees, agents, transferees, successors,
* and assigns.
*
* The AVS does not represent or warrant that the program furnished
* hereunder 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 is available from the AVS Web site at
* http://www.avs.org.cn
*
* THIS IS NOT A GRANT OF PATENT RIGHTS - SEE THE AVS PATENT POLICY.
************************************************************************
*/

/*
*************************************************************************************
* File name: vlc.h
* Function: header for (CA)VLC coding functions
*
*************************************************************************************
*/


#ifndef _VLC_H_
#define _VLC_H_

int se_v (char *tracestring);
int ue_v (char *tracestring);
int u_1 (char *tracestring);
int u_v (int LenInBits, char *tracestring);
int i_8(char *tracestring);

// UVLC mapping
void linfo_ue(int len, int info, int *value1, int *dummy);
void linfo_se(int len, int info, int *value1, int *dummy);

void linfo_cbp_intra(int len,int info,int *cbp, int *dummy);
void linfo_cbp_inter(int len,int info,int *cbp, int *dummy);

int  readSyntaxElement_VLC (SyntaxElement *sym);
int  readSyntaxElement_UVLC(SyntaxElement *sym, struct inp_par *inp);
int  readSyntaxElement_Intra8x8PredictionMode(SyntaxElement *sym);

int  GetVLCSymbol (byte buffer[],int totbitoffset,int *info, int bytecount);
int  GetVLCSymbol_IntraMode (byte buffer[],int totbitoffset,int *info, int bytecount);
int  GetVLCSymbol_refidx (byte buffer[],int totbitoffset,int *info, int bytecount);

int readSyntaxElement_FLC(SyntaxElement *sym);
int GetBits (byte buffer[],int totbitoffset,int *info, int bytecount, 
             int numbits);
int ShowBits (byte buffer[],int totbitoffset,int bytecount, int numbits);

int get_uv (int LenInBits, char*tracestring);  // Yulj 2004.07.15  for decision of slice end.
int GetSyntaxElement_FLC(SyntaxElement *sym); // Yulj 2004.07.15  for decision of slice end.

#endif