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// here i put common data structures and functions
// --------- theme notation
// data structures
typedef struct _note
{
unsigned short int played; // 0 if is a rest, 1 if played
unsigned short int chord; // 0 if is not a chord (strong) note, 1 if it is
unsigned short int diatonic; // 0 if is a note not belonging to this tonality
int interval; // semitones from prefious note
} t_note;
typedef struct _duration
{
int numerator; // like in music notation: in a 1/4 note the numerator is 1
int denominator; // like in music notation: in a 1/4 note the denominator is 4
} t_duration;
typedef struct _note_event
{
unsigned short int voice;
t_note note;
t_duration duration;
struct t_note_event *previous; // this is a list, link to the previous element
struct t_note_event *next; // this is a list, link to the next element
} t_note_event;
// manipolation functions
// TODO:
// - from data structures to lists of numbers and vice versa
// - from a (voice, rest, duration) representation to (voice, start, duration) and viceversa
// --------- rhythm notation
// data structures
typedef struct _rhythm_event
{
unsigned short int voice;
t_duration duration;
struct t_rhythm_event *previous; // this is a list, link to the previous element
struct t_rhythm_event *next; // this is a list, link to the next element
} t_rhythm_event;
// rhythms memory graph
/*
// list implementation
// this implements a graph that stores the memory of the current rhythm sub-elements
// list of links
typedef struct _rhythm_memory_arc
{
float weight;
struct t_rhythm_memory_node *to_node; // the target of this link (arc)
struct t_rhythm_memory_arc *next_arc; // next link in the list
} t_rhythm_memory_arc;
// graph node
typedef struct _rhythm_memory_node
{
t_duration duration;
struct t_rhythm_memory_arc *arcs; // the list of arcs to other nodes
} t_rhythm_memory_node;
*/
// with a table
// simpler and most of all non recursive when searching nodes!
#define num_possible_denominators 11
unsigned short int possible_denominators[] = {1,2,3,4,6,8,12,16,18,24,32};
// functions needed to fill and use the memory table
t_duration int2duration(int n);
unsigned short int duration2int(t_duration dur);
int possible_durations();
// manipolation functions
// TODO:
// - from data structures to lists of numbers and vice versa
// - from a (voice, duration) representation to (voice, start, duration) and viceversa
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