?? huffman.h
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/* huffman.h
Adapted from the ISO MPEG Audio Subgroup Software Simulation
Group's public c source for its MPEG audio decoder. Miscellaneous
changes by Jeff Tsay (ctsay@pasteur.eecs.berkeley.edu).
Last modified : 04/19/97 */
/**********************************************************************
Copyright (c) 1991 MPEG/audio software simulation group, All Rights Reserved
huffman.h
**********************************************************************/
/**********************************************************************
* MPEG/audio coding/decoding software, work in progress *
* NOT for public distribution until verified and approved by the *
* MPEG/audio committee. For further information, please contact *
* Davis Pan, 508-493-2241, e-mail: pan@3d.enet.dec.com *
* *
* VERSION 4.1 *
* changes made since last update: *
* date programmers comment *
* 27.2.92 F.O.Witte (ITT Intermetall) *
* 8/24/93 M. Iwadare Changed for 1 pass decoding. *
* 7/14/94 J. Koller useless 'typedef' before huffcodetab *
* removed *
*********************************************************************/
#ifndef HUFFMAN_H
#define HUFFMAN_H
#include "all.h"
#include "bit_res.h"
#define HUFFBITS uint32
#define HTN 34
#define MXOFF 250
struct huffcodetab {
char tablename[3]; /* string, containing table_description */
uint32 xlen; /* max. x-index+ */
uint32 ylen; /* max. y-index+ */
uint32 linbits; /* number of linbits */
uint32 linmax; /* max number to be stored in linbits */
int32 ref; /* a positive value indicates a reference */
HUFFBITS *table; /* pointer to array[xlen][ylen] */
unsigned char *hlen; /* pointer to array[xlen][ylen] */
unsigned char(*val)[2]; /* decoder tree */
uint32 treelen; /* length of decoder tree */
};
extern struct huffcodetab ht[HTN];
int32 huffman_decoder(struct huffcodetab *h, int32 *x, int32 *y, int32 *v,
int32 *w, Bit_Reserve *br);
#endif
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