#ifndef MM_UTIL_H#define MM_UTIL_H/* * Prototypes for functions in mm_util.c and other definitions for * Music Machine application. *//* number of sound sample files */#define NUM_SAMPLES 16/* number of sound player channels */#define NUM_CHANNELS 8/* number of pages of sound data */#define NUM_PAGES 32/* number of sound samples on one page of sound editor */#define SAMPLES_PER_PAGE 8/* constants for rest (silence), loop,  and stop commands */#define REST 0#define LOOP -1#define STOP -2/* array holding notes for the "song" */extern int notes[NUM_CHANNELS][NUM_PAGES*SAMPLES_PER_PAGE];/*** FUNCTION PROTOTYPES ***//* load in sound sample files and initialize */extern void init_samples(void);/* update bitmap buttons to match current page of sound data */void update_bitmap(FL_OBJECT *ob, int i);/* update all bitmaps to reflect current page of sound data */void update_bitmaps(void);/* save song to file */void save_sample_file(const char *filename);/* load song from file */void load_sample_file(const char *filename);/* zero out all rhythm mmory */void clear_samples(void);/* return whether a file exists */int file_exists(const char *filename);#endif /*MM_UTIL_H*/