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app.py
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app.py
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import time
import threading
import argparse
import logging
import midi
from interface import (CLInterface, TkInterface)
from input.keyboardInput import (KeyboardInput, EVT_KEY, EVT_KEY_PRESSED, EVT_KEY_RELEASED)
from synth import (EventQueue, Event)
from synth import Synth
LOGGER_NAME = 'app'
interface_map = {
'cli': CLInterface,
'tk': TkInterface
}
EVT_SYS = 'sys_'
EXIT_ITEM = 'exit'
EXIT_KEY = 'esc'
EXIT_EVENT = Event(EXIT_ITEM, EVT_SYS)
keyboard_note_table = {
"q": ("E", 4),
"w": ("F", 4),
"3": ("F#", 4),
"e": ("G", 4),
"4": ("G#", 4),
"r": ("A", 4),
"5": ("A#", 4),
"t": ("B", 4),
"y": ("C", 5),
"7": ("C#", 5),
"u": ("D", 5),
"8": ("D#", 5),
"i": ("E", 5),
"o": ("F", 5),
"0": ("F#", 5),
"p": ("G", 5),
"-": ("G#", 5),
}
event_type_midi_action = {
EVT_KEY_PRESSED: midi.note_on,
EVT_KEY_RELEASED: midi.note_off
}
class App(object):
def __init__(self, Iface, *args, **kwargs):
super(App).__init__(*args, **kwargs)
self.stop = False
self.log = logging.getLogger(LOGGER_NAME)
self.log.debug('Initializing Input...')
self._init_input()
self.log.debug('Initializing synth...')
self._init_synth()
self.log.debug('Initializing Interface...')
self.IfaceType = Iface
self._init_interface()
def _init_input(self):
self.input_queue = EventQueue()
self.input = KeyboardInput(self.input_queue)
self.input.start()
self.input_thread = threading.Thread(target=self._process_input_queue)
self.input_thread.start()
def _process_input_queue(self):
while not self.stop:
event = self.input_queue.get() # Blocking
self.log.debug(f'Got event {event}')
item = event.item
if event.type.startswith(EVT_SYS):
if item == EXIT_ITEM:
self._terminate()
if event.type.startswith(EVT_KEY):
if item in keyboard_note_table:
note, octave = keyboard_note_table[item]
new_event = Event(
event_type_midi_action[event.type](note, octave, 127),
midi.EVT_MIDI,
ancestor=event,
timestamp=time.time()
)
self.synth_queue.put(new_event)
else:
if item == EXIT_KEY:
self.input_queue.put(
Event(
EXIT_ITEM,
EVT_SYS,
ancestor=event,
timestamp=time.time()
)
)
self.log.debug('Exiting input Thread loop...')
def _init_interface(self):
self.interface = self.IfaceType(self.synth, log=self.log)
self.interface.start(exit_action=self.exit)
def _init_synth(self):
self.synth = Synth(log=self.log)
self.synth_queue = self.synth.input_queue
def _terminate(self):
self.log.debug("Terminating app...")
self.stop = True
self.log.debug("Terminating Input...")
self.input.stop()
self.log.debug("Terminating Synth...")
self.synth.terminate()
if threading.get_ident() != self.input_thread.ident:
self.log.debug('Stopping input Thread...')
self.input_thread.join()
self.log.debug("Terminating Interface...")
self.interface.stop()
self.log.debug("Finished terminating app!")
def exit(self):
self.input_queue.put(EXIT_EVENT)
def main():
args = parse_args()
log = init_log(args)
Iface = get_interface_type(args)
log.debug(f'Using {Iface} as the interface type')
log.debug(f'Initializing App...')
App(Iface)
log.debug(f'Bye ;)')
def get_interface_type(args):
return interface_map[args.interface]
def init_log(args):
if args.debug:
logging.basicConfig(
level=logging.DEBUG,
format="%(asctime)s [%(name)s (%(threadName)s)] %(levelname)s: %(message)s",
datefmt="%d/%m/%Y %H:%M:%S"
)
log = logging.getLogger(f'{LOGGER_NAME}.init')
log.debug('Oh, hello there! ;)')
return log
def parse_args():
parser = argparse.ArgumentParser(description="I'm a poor synth")
parser.add_argument(
'--debug',
help="enables debug log",
action='store_true'
)
parser.add_argument(
'-i', '--interface',
help="interface type",
choices=interface_map.keys(),
default='tk'
)
return parser.parse_args()
if __name__ == "__main__":
main()