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/* libst.h - include file for portable sound tools library 
** 
** Copyright (C) 1989 by Jef Poskanzer. 
** 
** Permission to use, copy, modify, and distribute this software and its 
** documentation for any purpose and without fee is hereby granted, provided 
** that the above copyright notice appear in all copies and that both that 
** copyright notice and this permission notice appear in supporting 
** documentation.  This software is provided "as is" without express or 
** implied warranty. 
*/ 
 
/* These do not round data.  Caller must round appropriately. */ 
 
#ifdef FAST_ULAW_CONVERSION 
extern int ulaw_exp_table[256]; 
extern unsigned char ulaw_comp_table[16384]; 
#define st_ulaw_to_linear(ulawbyte) ulaw_exp_table[ulawbyte] 
#define st_linear_to_ulaw(linearword) ulaw_comp_table[(linearword / 4) & 0x3fff] 
#else 
unsigned char st_linear_to_ulaw( /* int sample */ ); 
int st_ulaw_to_linear( /* unsigned char ulawbyte */ ); 
#endif 
 
#ifdef FAST_ALAW_CONVERSION 
extern int Alaw_exp_table[256]; 
extern unsigned char Alaw_comp_table[16384]; 
#define st_Alaw_to_linear(Alawbyte) Alaw_exp_table[Alawbyte] 
#define st_linear_to_Alaw(linearword) Alaw_comp_table[(linearword / 4) & 0x3fff] 
#else 
unsigned char st_linear_to_Alaw( /* int sample */ ); 
int st_Alaw_to_linear( /* unsigned char ulawbyte */ ); 
#endif