www.pudn.com > bladeenc-0.90.0-src.zip > encoder.h

/* 
			(c) Copyright 1998, 1999 - Tord Jansson 
			======================================= 
 
		This file is part of the BladeEnc MP3 Encoder, based on 
		ISO's reference code for MPEG Layer 3 compression, and might 
		contain smaller or larger sections that are directly taken 
		from ISO's reference code. 
 
		All changes to the ISO reference code herein are either 
		copyrighted by Tord Jansson (tord.jansson@swipnet.se) 
		or sublicensed to Tord Jansson by a third party. 
 
	BladeEnc is free software; you can redistribute this file 
	and/or modify it under the terms of the GNU Lesser General Public 
	License as published by the Free Software Foundation; either 
	version 2.1 of the License, or (at your option) any later version. 
 
*/ 
 
#ifndef ENCODER_DOT_H 
#define ENCODER_DOT_H 
 
/*********************************************************************** 
* 
*  Encoder Definitions 
* 
***********************************************************************/ 
 
/* General Definitions */ 
 
 
/* Psychacoustic Model 1 Definitions */ 
 
#define CB_FRACTION     0.33 
#define MAX_SNR         1000 
#define NOISE           10 
#define TONE            20 
#define DBMIN           -200.0 
#define LAST            -1 
#define STOP            -100 
#define POWERNORM       90.3090 /* = 20 * log10(32768) to normalize */ 
                                /* max output power to 96 dB per spec */ 
 
/* Psychoacoustic Model 2 Definitions */ 
 
#define LOGBLKSIZE      10 
#define BLKSIZE         1024 
#define HBLKSIZE        513 
#define CBANDS          63 
#define LXMIN           32.0 
 
/*********************************************************************** 
* 
*  Encoder Type Definitions 
* 
***********************************************************************/ 
 
/* Psychoacoustic Model 1 Type Definitions */ 
 
typedef int        IFFT2[FFT_SIZE/2]; 
typedef int        IFFT[FFT_SIZE]; 
typedef double     D9[9]; 
typedef double     D10[10]; 
typedef double     D640[640]; 
typedef double     D1408[1408]; 
typedef double     DFFT2[FFT_SIZE/2]; 
typedef double     DFFT[FFT_SIZE]; 
typedef double     DSBL[SBLIMIT]; 
typedef double     D2SBL[2][SBLIMIT]; 
 
typedef struct { 
        int        line; 
        double     bark, hear, x; 
} g_thres, *g_ptr; 
 
typedef struct { 
        double     x; 
        int        type, next, map; 
} mask, *mask_ptr; 
 
/* Psychoacoustic Model 2 Type Definitions */ 
 
typedef int        ICB[CBANDS]; 
typedef int        IHBLK[HBLKSIZE]; 
typedef FLOAT      F32[32]; 
typedef FLOAT      F2_32[2][32]; 
typedef FLOAT      FCB[CBANDS]; 
typedef FLOAT      FCBCB[CBANDS][CBANDS]; 
 
typedef FLOAT      FBLK[BLKSIZE]; 
typedef FLOAT      FHBLK[HBLKSIZE]; 
typedef FLOAT      F2HBLK[2][HBLKSIZE]; 
typedef FLOAT      F22HBLK[2][2][HBLKSIZE]; 
typedef double     DCB[CBANDS]; 
 
/*********************************************************************** 
* 
*  Encoder Function Prototype Declarations 
* 
***********************************************************************/ 
 
 
/* The following functions are in the file "subs.c" */ 
 
extern void        fft(FLOAT[BLKSIZE], FLOAT[BLKSIZE], FLOAT[BLKSIZE], 
                           FLOAT[BLKSIZE], int ); 
 
void windowFilterSubband( short * pBuffer, int k, double s[SBLIMIT] ); 
void initWindowFilterSubband( void ); 
#endif