hufftabs.c

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

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/**************************************************************************************
 * Fixed-point MP3 decoder
 * Jon Recker ([e-mail]), Ken Cooke ([e-mail])
 * June 2003
 *
 * hufftabs.c - compressed Huffman code tables
 **************************************************************************************/

#include "coder.h"

/* NOTE - regenerated tables to use shorts instead of ints 
 *        (all needed data can fit in 16 bits - see below)
 *
 * format 0xABCD
 *  A = length of codeword
 *  B = y value
 *  C = x value
 *  D = number of sign bits (0, 1, or 2)
 *
 * to read a CW, the code reads maxbits from the stream (dep. on 
 *   table index), but doesn't remove them from the bitstream reader
 * then it gets the correct CW by direct lookup into the table
 *   of length (2^maxbits) (more complicated for non-oneShot...)
 * for CW's with hlen < maxbits, there are multiple entries in the 
 *   table (extra bits are don't cares)
 * the bitstream reader then "purges" (or removes) only the correct
 *   number of bits for the chosen CW
 *
 * entries starting with F are special: D (signbits) is maxbits,
 *   so the decoder always checks huffTableXX[0] first, gets the 
 *   signbits, and reads that many bits from the bitstream
 *   (sometimes it takes > 1 read to get the value, so maxbits is
 *    can get updated by jumping to another value starting with 0xF)
 * entries starting with 0 are also special: A = hlen = 0, rest of 
 *   value is an offset to jump higher in the table (for tables of 
 *   type loopNoLinbits or loopLinbits)
 */

/* store Huffman codes as one big table plus table of offsets, since some platforms
 *   don't properly support table-of-tables (table of pointers to other const tables)
 */
const unsigned short huffTable[] = {
	/* huffTable01[9] */
	0xf003, 0x3112, 0x3101, 0x2011, 0x2011, 0x1000, 0x1000, 0x1000, 
	0x1000, 

	/* huffTable02[65] */
	0xf006, 0x6222, 0x6201, 0x5212, 0x5212, 0x5122, 0x5122, 0x5021, 
	0x5021, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 
	0x3112, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 
	0x3101, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 

	/* huffTable03[65] */
	0xf006, 0x6222, 0x6201, 0x5212, 0x5212, 0x5122, 0x5122, 0x5021, 
	0x5021, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 
	0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 
	0x2112, 0x2101, 0x2101, 0x2101, 0x2101, 0x2101, 0x2101, 0x2101, 
	0x2101, 0x2101, 0x2101, 0x2101, 0x2101, 0x2101, 0x2101, 0x2101, 
	0x2101, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 
	0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 
	0x2000, 
	
	/* huffTable05[257] */
	0xf008, 0x8332, 0x8322, 0x7232, 0x7232, 0x6132, 0x6132, 0x6132, 
	0x6132, 0x7312, 0x7312, 0x7301, 0x7301, 0x7031, 0x7031, 0x7222, 
	0x7222, 0x6212, 0x6212, 0x6212, 0x6212, 0x6122, 0x6122, 0x6122, 
	0x6122, 0x6201, 0x6201, 0x6201, 0x6201, 0x6021, 0x6021, 0x6021, 
	0x6021, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 
	0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 
	0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 
	0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 
	0x3112, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 
	0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 
	0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 
	0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 
	0x3101, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 

	/* huffTable06[129] */
	0xf007, 0x7332, 0x7301, 0x6322, 0x6322, 0x6232, 0x6232, 0x6031, 
	0x6031, 0x5312, 0x5312, 0x5312, 0x5312, 0x5132, 0x5132, 0x5132, 
	0x5132, 0x5222, 0x5222, 0x5222, 0x5222, 0x5201, 0x5201, 0x5201, 
	0x5201, 0x4212, 0x4212, 0x4212, 0x4212, 0x4212, 0x4212, 0x4212, 
	0x4212, 0x4122, 0x4122, 0x4122, 0x4122, 0x4122, 0x4122, 0x4122, 
	0x4122, 0x4021, 0x4021, 0x4021, 0x4021, 0x4021, 0x4021, 0x4021, 
	0x4021, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 
	0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 
	0x3101, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 
	0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 
	0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 
	0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 
	0x2112, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x3000, 0x3000, 0x3000, 0x3000, 0x3000, 0x3000, 0x3000, 
	0x3000, 0x3000, 0x3000, 0x3000, 0x3000, 0x3000, 0x3000, 0x3000, 
	0x3000, 

	/* huffTable07[110] */
	0xf006, 0x0041, 0x0052, 0x005b, 0x0060, 0x0063, 0x0068, 0x006b, 
	0x6212, 0x5122, 0x5122, 0x6201, 0x6021, 0x4112, 0x4112, 0x4112, 
	0x4112, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 
	0x3101, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0xf004, 0x4552, 0x4542, 0x4452, 0x4352, 0x3532, 0x3532, 
	0x3442, 0x3442, 0x3522, 0x3522, 0x3252, 0x3252, 0x2512, 0x2512, 
	0x2512, 0x2512, 0xf003, 0x2152, 0x2152, 0x3501, 0x3432, 0x2051, 
	0x2051, 0x3342, 0x3332, 0xf002, 0x2422, 0x2242, 0x1412, 0x1412, 
	0xf001, 0x1142, 0x1041, 0xf002, 0x2401, 0x2322, 0x2232, 0x2301, 
	0xf001, 0x1312, 0x1132, 0xf001, 0x1031, 0x1222, 

	/* huffTable08[280] */
	0xf008, 0x0101, 0x010a, 0x010f, 0x8512, 0x8152, 0x0112, 0x0115, 
	0x8422, 0x8242, 0x8412, 0x7142, 0x7142, 0x8401, 0x8041, 0x8322, 
	0x8232, 0x8312, 0x8132, 0x8301, 0x8031, 0x6222, 0x6222, 0x6222, 
	0x6222, 0x6201, 0x6201, 0x6201, 0x6201, 0x6021, 0x6021, 0x6021, 
	0x6021, 0x4212, 0x4212, 0x4212, 0x4212, 0x4212, 0x4212, 0x4212, 
	0x4212, 0x4212, 0x4212, 0x4212, 0x4212, 0x4212, 0x4212, 0x4212, 
	0x4212, 0x4122, 0x4122, 0x4122, 0x4122, 0x4122, 0x4122, 0x4122, 
	0x4122, 0x4122, 0x4122, 0x4122, 0x4122, 0x4122, 0x4122, 0x4122, 
	0x4122, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 
	0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 
	0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 
	0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 
	0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 
	0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 
	0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 
	0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 0x2112, 
	0x2112, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 
	0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 
	0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 
	0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 
	0x3101, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 
	0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 
	0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 
	0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 
	0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 
	0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 
	0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 
	0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 0x2000, 
	0x2000, 0xf003, 0x3552, 0x3452, 0x2542, 0x2542, 0x1352, 0x1352, 
	0x1352, 0x1352, 0xf002, 0x2532, 0x2442, 0x1522, 0x1522, 0xf001, 
	0x1252, 0x1501, 0xf001, 0x1432, 0x1342, 0xf001, 0x1051, 0x1332, 

	/* huffTable09[93] */
	0xf006, 0x0041, 0x004a, 0x004f, 0x0052, 0x0057, 0x005a, 0x6412, 
	0x6142, 0x6322, 0x6232, 0x5312, 0x5312, 0x5132, 0x5132, 0x6301, 
	0x6031, 0x5222, 0x5222, 0x5201, 0x5201, 0x4212, 0x4212, 0x4212, 
	0x4212, 0x4122, 0x4122, 0x4122, 0x4122, 0x4021, 0x4021, 0x4021, 
	0x4021, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 0x3112, 
	0x3112, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 
	0x3101, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x3000, 0x3000, 0x3000, 0x3000, 0x3000, 0x3000, 0x3000, 
	0x3000, 0xf003, 0x3552, 0x3542, 0x2532, 0x2532, 0x2352, 0x2352, 
	0x3452, 0x3501, 0xf002, 0x2442, 0x2522, 0x2252, 0x2512, 0xf001, 
	0x1152, 0x1432, 0xf002, 0x1342, 0x1342, 0x2051, 0x2401, 0xf001, 
	0x1422, 0x1242, 0xf001, 0x1332, 0x1041, 

	/* huffTable10[320] */
	0xf008, 0x0101, 0x010a, 0x010f, 0x0118, 0x011b, 0x0120, 0x0125, 
	0x8712, 0x8172, 0x012a, 0x012d, 0x0132, 0x8612, 0x8162, 0x8061, 
	0x0137, 0x013a, 0x013d, 0x8412, 0x8142, 0x8041, 0x8322, 0x8232, 
	0x8301, 0x7312, 0x7312, 0x7132, 0x7132, 0x7031, 0x7031, 0x7222, 
	0x7222, 0x6212, 0x6212, 0x6212, 0x6212, 0x6122, 0x6122, 0x6122, 
	0x6122, 0x6201, 0x6201, 0x6201, 0x6201, 0x6021, 0x6021, 0x6021, 
	0x6021, 0x4112, 0x4112, 0x4112, 0x4112, 0x4112, 0x4112, 0x4112, 
	0x4112, 0x4112, 0x4112, 0x4112, 0x4112, 0x4112, 0x4112, 0x4112, 
	0x4112, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 
	0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 
	0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 
	0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 0x3101, 
	0x3101, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 0x3011, 
	0x3011, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 
	0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000,