MusicKit: DSPSymbols.h Source File

00001 #ifndef __MK_DSPSymbols_H___
00002 #define __MK_DSPSymbols_H___
00003 /* Copyright 1988-1992, NeXT Inc.  All rights reserved. */
00004 
00005 #import "dsp_structs.h"
00006 
00007 int DSPSetCurrentSymbolTable(int theIndex);
00008 /* 
00009  * Set symbol table to specifed index, creating
00010  * a new table, if necessary.  Index is zero-based.
00011  */
00012 
00013 void DSPClearSymbolTable(void);
00014 /*
00015  * Clear current symbol table.
00016  */
00017 
00018 void DSPFreeSymbolTable(void);
00019 /*
00020  * Free current symbol table.
00021  * DSPSymbol pointers entered into the table are not freed since they
00022  * belong to a DSPLoadSpec struct elsewhere.
00023  */
00024 
00025 int DSPEnterSymbol(char *sym, DSPSymbol *val);
00026 /* 
00027  * Makes a current symbol table entry for a given string and stores the value.
00028  * Returns 0 for inserted, nonzero for updated previous value.
00029  * On the first call, the symbol table is created if necessary.
00030  * Case is preserved.
00031  */
00032 
00033 int DSPLookupSymbol(char *sym, DSPSymbol **val);
00034 /*
00035  * Gets symbol associated with string sym (normally its name).
00036  * Returns FALSE for found (no error), TRUE for not found.
00037  * Case matters. Uses current symbol table.
00038  */
00039 
00040 #endif