from ctypes import *
from RPi import GPIO
from threading import Thread
from threading import Event
import dico_akai
import ctypes as ct
import signal
import sys

_lib = ct.cdll.LoadLibrary("./libanalysemidi.so")

class Evenement(Structure):
	_fields_ = [("type", ct.c_int),("note", ct.c_int), ("velocity",ct.c_int)]

_lib.wait_event.restype = Evenement

class FD(Thread):

        def __init__(self, pin):
                Thread.__init__(self);
                self.pin = pin
		self.running = False

        def run(self):
                p = GPIO.PWM(self.pin,1)
                p.start(50)
		self.running = True
                while self.running:
			if b == 1:
                        	if r.type == 0:
                                	p.ChangeFrequency(dico_akai.midi_note[r.note])
                        	if r.type == 1:
                                	p.ChangeFrequency(1)

	def stop(self):
		self.running = False

def fin_du_live(signal, frame):
	print("fin du live")
	fd1.stop()
	fd2.stop()
	fd1.join()
	fd2.join()
	GPIO.cleanup()
	_lib.close()	
	sys.exit(0)

signal.signal(signal.SIGINT, fin_du_live)
_lib.recup_num()
_lib.init_seq()
_lib.create_port()
_lib.connect_port()
#Initialisation des FDs
GPIO.setmode(GPIO.BCM)
#FD1
GPIO.setup(23,GPIO.OUT)
GPIO.setup(24,GPIO.OUT)
GPIO.setup(25,GPIO.OUT)
#FD2
GPIO.setup(16,GPIO.OUT)
GPIO.setup(20,GPIO.OUT)
GPIO.setup(21,GPIO.OUT)
#PWM
GPIO.setup(18,GPIO.OUT)
GPIO.setup(13,GPIO.OUT)
#Act FD1
GPIO.output(23,GPIO.LOW)
GPIO.output(24,GPIO.LOW)
GPIO.output(25,GPIO.LOW)
#Act FD2
GPIO.output(16,GPIO.LOW)
GPIO.output(20,GPIO.LOW)
GPIO.output(21,GPIO.LOW)
r = _lib.wait_event()
b = 1
fd1 = FD(13)
fd2 = FD(18)
fd1.start()
fd2.start()
while(True):
	prev = r.type
	r = _lib.wait_event()
	if r.type != prev:
		b=1
	else:
		b=0