www.pudn.com > av3dec_20050318.zip > sam_HuffmanDec.c

/* 
*********************************************************************** 
* COPYRIGHT AND WARRANTY INFORMATION 
* 
* Copyright 2004,  Audio Video Coding Standard, Part III 
* 
* This software module was originally developed by 
* 
* JungHoe Kim (kjh94@samsung.com), Samsung AIT 
* 
* edited by 
* 
* Lei Miao (win.miaolei@samsung.com), Samsung AIT 
* 
* 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. 
************************************************************************ 
*/ 
#include  
#include  
 
unsigned int codeBookBin[2]; 
unsigned int codeBookLenBin[2]; 
 
int siCodeMode; 
 
void BSHCDecInit(void); 
int BSHCDecHuff(unsigned int *table,unsigned int *len,int range,int *decData); 
int BSHCModelSelect(int model,int bpl); 
 
void BSHCDecInit(void) 
{ 
	codeBookBin[0] = 0; 
	codeBookBin[1] = 1; 
	codeBookLenBin[0] = 1; 
	codeBookLenBin[1] = 1; 
} 
 
int BSHCDecHuff(unsigned int *table,unsigned int *len,int range,int *decData) 
{ 
	int i,j; 
	unsigned int val; 
	int bitCnt; 
 
	val = getbitsfrombuf(1); 
	bitCnt=1; 
	for(j=1;j<32;j++) /*max length for HUFF is 32*/ 
	{ 
		for(i=0;i4) 
	{ 
		modelNum = 20+bpl; 
	} 
	return modelNum; 
}