huffcode.h

ESS3890+SL原代码（1*16内存）

/* Copyright 1998, ESS Technology, Inc.                                 */
/* SCCSID  @(#)huffcode.h	4.2 02/25/03 */

/*
 * $Log$
 */

#ifndef __HUFFCODE_H__
#define __HUFFCODE_H__
#include "memmap.h"
#define HUFFBITS unsigned long int
#define HTN     34
#define MXOFF   250

HUFFBITS dmask = 1 << (sizeof(HUFFBITS)*8-1);
unsigned int hs = sizeof(HUFFBITS)*8;

struct huffcodetab {
  unsigned int xlen;      /*max. x-index+                            */
  unsigned int ylen;      /*max. y-index+                            */
  unsigned int linbits;   /*number of linbits                        */
  unsigned int linmax;    /*max number to be stored in linbits       */
#ifdef MP3_BLK_HUFF
  unsigned char *sub_len; /* decoder tree sub len for block decoding */
#endif
  unsigned char *val;     /*decoder tree                             */
  unsigned int treelen;   /*length of decoder tree                   */
};

#define ddram_cached(a) (0x02000000 + ((a)<<2))
#define HUFFTAB_PTR_INIT	(uchar *)NULL
#define HUFFSUBLEN_PTR_INIT	(uchar *)NULL
#if defined(MKTABLE) || defined(XSEG4_ON_FLY)
#ifdef MP3_BLK_HUFF
struct huffcodetab ht[HTN] = {
   {  0,  0,  0,   0, HUFFSUBLEN_PTR_INIT+  0,
                      HUFFTAB_PTR_INIT   +  0,     0},
   {  1,  1,  0,   0, HUFFSUBLEN_PTR_INIT+  0,
                      HUFFTAB_PTR_INIT   +  0,    16},
   {  2,  2,  0,   0, HUFFSUBLEN_PTR_INIT+  1,
                      HUFFTAB_PTR_INIT   +  16,    42},
   {  2,  2,  0,   0, HUFFSUBLEN_PTR_INIT+  3,
                      HUFFTAB_PTR_INIT   +  58,    42},
   {  0,  0,  0,   0, HUFFSUBLEN_PTR_INIT+  5,
                      HUFFTAB_PTR_INIT   +  100,    0},
   {  3,  3,  0,   0, HUFFSUBLEN_PTR_INIT+  5,
                      HUFFTAB_PTR_INIT   +  100,   80},
   {  3,  3,  0,   0, HUFFSUBLEN_PTR_INIT+  7,
                      HUFFTAB_PTR_INIT   +  180,   72},
   {  5,  5,  0,   0, HUFFSUBLEN_PTR_INIT+  9,
                      HUFFTAB_PTR_INIT   +  252,  150},
   {  5,  5,  0,   0, HUFFSUBLEN_PTR_INIT+  13,
                      HUFFTAB_PTR_INIT   +  402,  136},
   {  5,  5,  0,   0, HUFFSUBLEN_PTR_INIT+  18,
                      HUFFTAB_PTR_INIT   +  538,  172},
   {  7,  7,  0,   0, HUFFSUBLEN_PTR_INIT+  21,
                      HUFFTAB_PTR_INIT   +  710,  248},
   {  7,  7,  0,   0, HUFFSUBLEN_PTR_INIT+  26,
                      HUFFTAB_PTR_INIT   +  958,  258},
   {  7,  7,  0,   0, HUFFSUBLEN_PTR_INIT+  31,
                      HUFFTAB_PTR_INIT   +  1216, 272},
   { 15, 15,  0,   0, HUFFSUBLEN_PTR_INIT+  35,
                      HUFFTAB_PTR_INIT   +  1488,1004},
   {  0,  0,  0,   0, HUFFSUBLEN_PTR_INIT+  48,
                      HUFFTAB_PTR_INIT   +  2492,   0},
   { 15, 15,  0,   0, HUFFSUBLEN_PTR_INIT+  48,
                      HUFFTAB_PTR_INIT   +  2492,1006},
   { 15, 15,  1,   1, HUFFSUBLEN_PTR_INIT+  55,
                      HUFFTAB_PTR_INIT   +  3498, 998},
   { 15, 15,  2,   3, HUFFSUBLEN_PTR_INIT+  55,
                      HUFFTAB_PTR_INIT   +  3498, 998},
   { 15, 15,  3,   7, HUFFSUBLEN_PTR_INIT+  55,
                      HUFFTAB_PTR_INIT   +  3498, 998},
   { 15, 15,  4,  15, HUFFSUBLEN_PTR_INIT+  55, 
                      HUFFTAB_PTR_INIT   +  3498, 998},
   { 15, 15,  6,  63, HUFFSUBLEN_PTR_INIT+  55,
                      HUFFTAB_PTR_INIT   +  3498, 998},
   { 15, 15,  8, 255, HUFFSUBLEN_PTR_INIT+  55,
                      HUFFTAB_PTR_INIT   +  3498, 998},
   { 15, 15, 10,1023, HUFFSUBLEN_PTR_INIT+  55,
                      HUFFTAB_PTR_INIT   +  3498, 998},
   { 15, 15, 13,8191, HUFFSUBLEN_PTR_INIT+  55,
                      HUFFTAB_PTR_INIT   +  3498, 998},
   { 15, 15,  4,  15, HUFFSUBLEN_PTR_INIT+  66,
                      HUFFTAB_PTR_INIT   +  4496, 964},
   { 15, 15,  5,  31, HUFFSUBLEN_PTR_INIT+  66,
                      HUFFTAB_PTR_INIT   +  4496, 964},
   { 15, 15,  6,  63, HUFFSUBLEN_PTR_INIT+  66,
                      HUFFTAB_PTR_INIT   +  4496, 964},
   { 15, 15,  7, 127, HUFFSUBLEN_PTR_INIT+  66,
                      HUFFTAB_PTR_INIT   +  4496, 964},
   { 15, 15,  8, 255, HUFFSUBLEN_PTR_INIT+  66,
                      HUFFTAB_PTR_INIT   +  4496, 964},
   { 15, 15,  9, 511, HUFFSUBLEN_PTR_INIT+  66,
                      HUFFTAB_PTR_INIT   +  4496, 964},
   { 15, 15, 11,2047, HUFFSUBLEN_PTR_INIT+  66,
                      HUFFTAB_PTR_INIT   +  4496, 964},
   { 15, 15, 13,8191, HUFFSUBLEN_PTR_INIT+  66,
                      HUFFTAB_PTR_INIT   +  4496, 964},
   {  0, 15,  0,   0, HUFFSUBLEN_PTR_INIT+  73,
                      HUFFTAB_PTR_INIT   +  5460,  64},
   {  0, 15,  0,   0, HUFFSUBLEN_PTR_INIT+  75,
                      HUFFTAB_PTR_INIT   +  5524,  48},
  };

#else

struct huffcodetab ht[HTN] = { 
   {  0,  0,  0,   0, HUFFTAB_PTR_INIT,           0},
   {  1,  1,  0,   0, HUFFTAB_PTR_INIT,           7},
   {  2,  2,  0,   0, HUFFTAB_PTR_INIT+   7 * 2, 17},
   {  2,  2,  0,   0, HUFFTAB_PTR_INIT+  24 * 2, 17},
   {  0,  0,  0,   0, HUFFTAB_PTR_INIT+  41 * 2,  0},
   {  3,  3,  0,   0, HUFFTAB_PTR_INIT+  41 * 2, 31},
   {  3,  3,  0,   0, HUFFTAB_PTR_INIT+  72 * 2, 31},
   {  5,  5,  0,   0, HUFFTAB_PTR_INIT+ 103 * 2, 71},
   {  5,  5,  0,   0, HUFFTAB_PTR_INIT+ 174 * 2, 71},
   {  5,  5,  0,   0, HUFFTAB_PTR_INIT+ 245 * 2, 71},
   {  7,  7,  0,   0, HUFFTAB_PTR_INIT+ 316 * 2,127},
   {  7,  7,  0,   0, HUFFTAB_PTR_INIT+ 443 * 2,127},
   {  7,  7,  0,   0, HUFFTAB_PTR_INIT+ 570 * 2,127},
   { 15, 15,  0,   0, HUFFTAB_PTR_INIT+ 697 * 2,511},
   {  0,  0,  0,   0, HUFFTAB_PTR_INIT+1200 * 2,  0},
   { 15, 15,  0,   0, HUFFTAB_PTR_INIT+1208 * 2,511},
   { 15, 15,  1,   1, HUFFTAB_PTR_INIT+1719 * 2,511},
   { 15, 15,  2,   3, HUFFTAB_PTR_INIT+1719 * 2,511},
   { 15, 15,  3,   7, HUFFTAB_PTR_INIT+1719 * 2,511},
   { 15, 15,  4,  15, HUFFTAB_PTR_INIT+1719 * 2,511},
   { 15, 15,  6,  63, HUFFTAB_PTR_INIT+1719 * 2,511},
   { 15, 15,  8, 255, HUFFTAB_PTR_INIT+1719 * 2,511},
   { 15, 15, 10,1023, HUFFTAB_PTR_INIT+1719 * 2,511},
   { 15, 15, 13,8191, HUFFTAB_PTR_INIT+1719 * 2,511},
   { 15, 15,  4,  15, HUFFTAB_PTR_INIT+2230 * 2,512},
   { 15, 15,  5,  31, HUFFTAB_PTR_INIT+2230 * 2,512},
   { 15, 15,  6,  63, HUFFTAB_PTR_INIT+2230 * 2,512},
   { 15, 15,  7, 127, HUFFTAB_PTR_INIT+2230 * 2,512},
   { 15, 15,  8, 255, HUFFTAB_PTR_INIT+2230 * 2,512},
   { 15, 15,  9, 511, HUFFTAB_PTR_INIT+2230 * 2,512},
   { 15, 15, 11,2047, HUFFTAB_PTR_INIT+2230 * 2,512},
   { 15, 15, 13,8191, HUFFTAB_PTR_INIT+2230 * 2,512},
   {  0, 15,  0,   0, HUFFTAB_PTR_INIT+2742 * 2, 31},
   {  0, 15,  0,   0, HUFFTAB_PTR_INIT+2773 * 2, 31}
  }; 
#endif  /*  end of MP3_BLK_HUFF */
#endif  /*  end of MKTABLE */

#endif  /*  end of __HUFFCODE_H__ */