mixer-rpc/mixer.py

#!/bin/python

import argparse
import socket
import mido

from enum import Enum

MIXER_PORT = 51325

class Mixer:
    def __init__(self, ip, port):
        self.sock = socket.create_connection((ip, port))

    ALLEN_HEATH_ID = [0x00, 0x00, 0x1A]
    QU_MIXER = [0x50, 0x11]
    MAJOR_MINOR = [0x01, 0x00]
    ALL_CALL_MIDI_CHANNEL = [0x7F]
    SYSEX_HEADER = ALLEN_HEATH_ID + QU_MIXER + MAJOR_MINOR
    SYSEX_ALL_CALL = SYSEX_HEADER + ALL_CALL_MIDI_CHANNEL

    class SysExMessageId(Enum):
        GET_NAME_FROM_QU_REQUEST = 0x01,
        GET_NAME_FROM_QU_RESPONSE = 0x02,
        GET_SYSTEM_STATE_REQUEST = 0x10,
        GET_SYSTEM_STATE_RESPONSE = 0x11,
        GET_METER_DATA_REQUEST = 0x12,
        GET_METER_DATA_RESPONSE = 0x13

    def recv(self):
        p = mido.Parser()

        while True:
            data = self.sock.recv(1024)

            if not data:
                break

            p.feed(data)

            if p.pending():
                msg = p.get_message()

                print(msg.type)
                print(vars(msg))

                if hasattr(msg, "data"):
                    print("Hex:  ", " ".join(f"{b:02X}" for b in msg.data))

                return msg

    def get_system_state(self):
        msg_id = self.SysExMessageId.GET_SYSTEM_STATE_REQUEST
        i_pad_flag = 0x01

        data = self.SYSEX_ALL_CALL + [msg_id, i_pad_flag]
        msg = mido.Message('sysex', data=data)
        msg_bytes = bytes(msg.bytes())

        self.sock.sendall(msg_bytes)
        print("Sent:", " ".join(f"{b:02X}" for b in msg_bytes))

        response = self.recv()

        class QuModel(Enum):
            QU16 = 1
            QU24 = 2
            QU32 = 3
            QUPAC = 4
            QUSB = 5

            def __str__(self):
                labels = {
                    1: "Qu-16",
                    2: "Qu-24",
                    3: "Qu-32",
                    4: "Qu-Pac",
                    5: "Qu-SB",
                }

                return labels[self.value]

        sysex_header = response.data[:8]

        midi_channel = int(response.data[7])
        id = int(response.data[8])
        i_pad_flag = int(response.data[9])
        major_ver = int(response.data[10])
        minor_ver = int(response.data[11])

        print(f"sysex_header: {sysex_header}")
        print(f"MIDI channel: {midi_channel}")
        print(f"ID: 0x{id:02X}")
        print(f"Model: {QuModel(i_pad_flag)}")
        print(f"Firmware Version: {major_ver}.{minor_ver}")

    def get_name_from_qu(self, channel_no, name_to_set):
        msg_id = self.SysExMessageId.GET_NAME_FROM_QU_REQUEST

        data = self.SYSEX_HEADER + [int(0), msg_id, int(channel_no)]

        if name_to_set:
            data += list(name_to_set.encode('utf-8'))

        msg = mido.Message('sysex', data=data)
        msg_bytes = bytes(msg.bytes())

        print("Sent:", " ".join(f"{b:02X}" for b in msg_bytes))
        self.sock.sendall(msg_bytes)

        response = self.recv()

        sysex_header = response.data[:8]

        midi_channel = int(response.data[7])
        id = int(response.data[8])
        channel_name = bytes(response.data[9:]).decode("utf-8")

        print(f"sysex_header: {sysex_header}")
        print(f"MIDI channel: {midi_channel}")
        print(f"ID: 0x{id:02X}")
        print(f"Channel Name: {channel_name}")

    def nrpn_parameter_control(self, midi_ch, mixer_ch, id, va, vx):
        a = mido.Message('control_change', channel=midi_ch, control=0x63, value=mixer_ch)
        b = mido.Message('control_change', channel=midi_ch, control=0x62, value=id)
        c = mido.Message('control_change', channel=midi_ch, control=0x06, value=va)
        d = mido.Message('control_change', channel=midi_ch, control=0x26, value=vx)

        msg_bytes = bytes(a.bytes() + b.bytes() + c.bytes() + d.bytes())

        print(' '.join(f"{b:02X}" for b in msg_bytes))
        self.sock.sendall(msg_bytes)

    def shutdown(self):
        self.nrpn_parameter_control(midi_ch=0, mixer_ch=0, id=0x5F, va=0x00, vx=0x00)

    def set_bank_1(self):
        msb = mido.Message('control_change', channel=0, control=0x00, value=0x00)
        lsb = mido.Message('control_change', channel=0, control=0x20, value=0x00)

        msg_bytes = bytes(msb.bytes() + lsb.bytes())

        print(' '.join(f"{b:02X}" for b in msg_bytes))
        self.sock.sendall(msg_bytes)

    def scene_recall(self, scene_id):
        print(f"scene_recall: scene_id={scene_id}", scene_id)

        self.set_bank_1()
        msb = mido.Message('program_change', channel=0, program=scene_id)

        msg_bytes = bytes(msb.bytes())

        print(' '.join(f"{b:02X}" for b in msg_bytes))
        self.sock.sendall(msg_bytes)

    def watch(self):
        while True:
            self.recv()

def main():
    parser = argparse.ArgumentParser(description="Allen & Heath Qu Remote Control")
    parser.add_argument("ip", help="IP of the mixer")

    subparsers = parser.add_subparsers(dest="command", required=True, help="Available commands")

    channel_naming_parser = subparsers.add_parser("get_name_from_qu", help="Channel naming")
    channel_naming_parser.add_argument("channel_id", type=int, choices=range(0, 16), help="Number of channel to get or set its name")
    channel_naming_parser.add_argument("-n", "--name", help="Channel name to set")

    subparsers.add_parser("get_system_state", help="Get system information")
    subparsers.add_parser("shutdown", help="Shut down the mixer")

    scene_parser = subparsers.add_parser("scene_recall", help="Recall a specific scene")
    scene_parser.add_argument("scene_number", type=int, choices=range(0, 100), help="Scene number to recall")

    subparsers.add_parser("scene_recall_default", help="Set the default scene 0")
    subparsers.add_parser("watch", help="Just receive data from mixer and print it to console")

    args = parser.parse_args()

    print(f"IP: {args.ip}")
    mixer = Mixer(args.ip, MIXER_PORT)

    if args.command:
        print(f"Command: {args.command}")
        print(f"Args: {vars(args)}")

        match args.command:
            case 'get_name_from_qu': mixer.get_name_from_qu(args.channel_id, args.name)
            case 'get_system_state': mixer.get_system_state()
            case 'shutdown': mixer.shutdown()
            case 'scene_recall': mixer.scene_recall(args.scene_number)
            case 'scene_recall_default': mixer.scene_recall(0)
            case 'watch': mixer.watch()

if __name__ == '__main__':
    main()