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#!/usr/bin/env python3
import argparse
import atexit
import socket
import sys
import time
from rtmidi.midiutil import open_midiport
from lib.config import get_config
NOTE_ON = 0x90
NOTE_OFF = 0x80
CC = 0xb0
VELOCITY = 0x7f
class MidiInputHandler(object):
def __init__(self, host, port, feedback_mode, event_map):
self.host = host
self.port = port
self.feedback_mode = feedback_mode
self.source_a = None
self.source_b = None
self.cmode = None
self.event_map = event_map
def init(self, midi_device_name):
self.conn = None
self.midiin = None
self.midiout = None
try:
self.conn = socket.create_connection((self.host, self.port))
except (ConnectionRefusedError, KeyboardInterrupt):
print("Could not connect to voctocore")
sys.exit()
@atexit.register
def close_conn():
self.conn and self.conn.close()
try:
self.midiin, self.midi_portname = open_midiport(midi_device_name)
except (EOFError, KeyboardInterrupt):
print("Opening midi port failed")
sys.exit()
@atexit.register
def close_midi():
self.midiin and self.midiin.close_port()
self.midiin.set_callback(self.midiin_callback)
if self.feedback_mode:
try:
self.midiout, _ = open_midiport(
midi_device_name,
type_='output'
)
except (EOFError, KeyboardInterrupt):
print("Opening midi output port failed")
sys.exit()
def run(self):
# get current mode on startup
self.conn.send(b'get_video\r\n')
self.conn.send(b'get_composite_mode\r\n')
print("Entering main loop. Press Control-C to exit.")
try:
# read incoming socket, call `line_callback` line-buffered
buf = b''
while True:
buf += self.conn.recv(1000000)
lines = buf.split(b'\n')
for l in lines[:-1]:
self.line_callback(l)
buf = lines[-1]
except KeyboardInterrupt:
print("")
def midiin_callback(self, event, data=None):
message, _deltatime = event
if message[0] == NOTE_OFF:
self.update_interface()
return
elif message[0] == NOTE_ON:
if message[1] in self.event_map:
note = message[1]
msg = "set_videos_and_composite " + self.event_map[note]
print("Sending: '{}'".format(msg))
try:
self.conn.sendall(msg.encode('ascii') + b"\n")
except BrokenPipeError:
print("voctocore disconnected, trying to reconnect")
try:
self.conn = socket.create_connection(
(self.host, self.port)
)
print("Reconnected to voctocore")
except socket.error:
pass
else:
print("[{}]: Unhandled NOTE ON event {}".format(
self.midi_portname,
message[1])
)
else:
print(repr(message))
return
def line_callback(self, line):
tokens = line.split()
if tokens[0] == b'video_status':
self.source_a, self.source_b = tokens[1], tokens[2]
self.update_interface()
elif tokens[0] == b'composite_mode':
self.cmode = tokens[1]
self.update_interface()
def update_interface(self):
if not self.feedback_mode:
return
# reset all
for note in self.event_map.keys():
self.midiout.send_message([NOTE_OFF, note, VELOCITY])
# set current mode
for note, mode_string in self.event_map.items():
sa, sb, cm = mode_string.encode().split()
if sa == self.source_a \
and (sb == self.source_b or sb == b'*') \
and cm == self.cmode:
self.midiout.send_message([NOTE_ON, note, VELOCITY])
def main():
@atexit.register
def kthxbye():
print("Exit")
parser = argparse.ArgumentParser(description='VoctoMIDI')
parser.add_argument(
'--config-file',
default=None,
help='Add another config file to the read list.'
)
args = parser.parse_args()
Config = get_config(args.config_file)
host = Config.get("server", "host")
port = Config.get("server", "port", fallback=9999)
feedback_mode = \
Config.get("midi", "feedback", fallback="false").lower() == "true"
midi_device_name = Config.get("midi", "device")
event_map = {int(key): value for key, value in Config.items("eventmap")}
mih = MidiInputHandler(host, port, feedback_mode, event_map)
mih.init(midi_device_name)
mih.run()
if __name__ == "__main__":
main()
|
