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105 lines
3.6 KiB
105 lines
3.6 KiB
// Author: Gockner, Simon
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// Created: 2021-04-07
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// Copyright(c) 2021 SimonG. All Rights Reserved.
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using System.Collections.Generic;
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using System.Linq;
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using Lib.Audio.Controls.Buttons.Factories;
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using Lib.Audio.Controls.Buttons.Interfaces;
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using Lib.Audio.Controls.Factories;
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using Lib.Audio.Controls.Interfaces;
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using Lib.Audio.Interfaces;
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using Lib.Driver.Xml;
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using Lib.Midi.Interfaces;
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using Lib.Midi.Messages;
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using Lib.Midi.Messages.Interfaces;
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namespace Lib.Audio
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{
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public class Channel : IChannel
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{
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private readonly int _channelNumber;
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private IMidiMessage? _acknowledgeMessage;
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public Channel(XmlChannel xmlChannel,
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IFaderFactory faderFactory,
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IKnobFactory knobFactory,
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IButtonFactory buttonFactory)
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{
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_channelNumber = xmlChannel.ChannelNumber;
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if (xmlChannel.Fader != null)
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{
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Fader = faderFactory.Create(xmlChannel.Fader);
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Fader.PositionChanged += OnFaderPositionChanged;
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}
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if (xmlChannel.Knob != null)
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Knob = knobFactory.Create();
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if (xmlChannel.Buttons != null)
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{
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Buttons = new List<IButton>();
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foreach (var button in xmlChannel.Buttons)
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Buttons.Add(buttonFactory.Create(button, _channelNumber));
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}
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}
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public IFader? Fader { get; }
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public IKnob? Knob { get; }
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public List<IButton>? Buttons { get; }
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public IControllable? Controllable { get; private set; }
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public void MapControllable(IControllable controllable) => Controllable = controllable;
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public void HandleMessage(IMidiMessage message)
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{
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if (message is NoteOnMessage noteOnMessage)
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{
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if (Fader?.NoteNumber == noteOnMessage.NoteNumber)
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Fader.IsTouched = true;
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else
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{
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IButton? button = Buttons?.FirstOrDefault(b => b.NoteNumber == noteOnMessage.NoteNumber);
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_acknowledgeMessage = button?.HandleOn(Controllable, noteOnMessage.Velocity);
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}
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}
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else if (message is NoteMessage noteMessage)
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{
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if (Fader?.NoteNumber == noteMessage.NoteNumber)
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{
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Fader.IsTouched = false;
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_acknowledgeMessage = new PitchWheelChangeMessage(0, _channelNumber, Fader.Position);
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}
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else
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{
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IButton? button = Buttons?.FirstOrDefault(b => b.NoteNumber == noteMessage.NoteNumber);
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_acknowledgeMessage = button?.HandleOff(Controllable, noteMessage.Velocity);
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}
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}
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else if (message is PitchWheelChangeMessage pitchWheelChangeMessage)
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{
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if (Fader != null)
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Fader.Position = pitchWheelChangeMessage.Pitch;
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}
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}
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public void SendAcknowledge(IMidiCommunication midiCommunication)
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{
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if (_acknowledgeMessage == null)
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return;
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midiCommunication.Send(_acknowledgeMessage);
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_acknowledgeMessage = null;
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}
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private void OnFaderPositionChanged(object? sender, int position)
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{
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if (sender is not IFader fader)
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return;
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Controllable?.SetVolume(fader.RelativePosition);
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}
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public override string ToString() => $"Channel {_channelNumber}";
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}
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} |