/********************************************************************** * MPEG/audio 編碼/解碼軟件                                           * * VERSION 4.1                                                        * *********************************************************************/	 #define HUFFBITS unsigned long int#define HTN	34#define MXOFF	250 struct huffcodetab {  char tablename[3];	/*字符, 包含 table_description	*/  unsigned int xlen; 	  unsigned int ylen;	  unsigned int linbits; /* linbits	數目 		*/  unsigned int linmax;	/*存儲在linbits中的最大數目 	*/  int ref;		/*a positive value indicates a reference*/  HUFFBITS *table;	/*指向array[xlen][ylen]的指針		*/  unsigned char *hlen;	/*指向 array[xlen][ylen]的指針		*/  unsigned char(*val)[2];/*解碼樹				*/   unsigned int treelen;	/*解碼樹長度		*/};extern struct huffcodetab ht[HTN];/* 全局內存塊		*/				/* 所有huffcodtable headers的數組	*/				/* 0..31 Huffman code table 0..31	*/				/* 32,33 count1-tables			*/extern int read_decoder_table(FILE *);extern int huffman_decoder(struct huffcodetab *, int *, int*, int*, int*);