- start implementing process handling

Lib.Audio/Channel.cs

@@ -14,22 +14,31 @@ using Lib.Driver.Xml;
 using Lib.Midi.Interfaces;
 using Lib.Midi.Messages;
 using Lib.Midi.Messages.Interfaces;
+using Lib.ProcessManaging.Interfaces;
 
 namespace Lib.Audio
 {
     public class Channel : IChannel
     {
+        private readonly IControllableCollector _controllableCollector;
         private readonly IMidiCommunication _midiCommunication;
+        private readonly IProcessManager _processManager;
+        
         private readonly int _channelNumber;
+        
         private IMidiMessage? _acknowledgeMessage;
 
         public Channel(XmlChannel xmlChannel,
+            IControllableCollector controllableCollector,
             IMidiCommunication midiCommunication,
+            IProcessManager processManager,
             IFaderFactory faderFactory,
             IKnobFactory knobFactory,
             IButtonFactory buttonFactory)
         {
+            _controllableCollector = controllableCollector;
             _midiCommunication = midiCommunication;
+            _processManager = processManager;
             _channelNumber = xmlChannel.ChannelNumber;
 
             if (xmlChannel.Fader != null)
@@ -47,6 +56,9 @@ namespace Lib.Audio
                 foreach (var button in xmlChannel.Buttons) 
                     Buttons.Add(buttonFactory.Create(button, _channelNumber));
             }
+            
+            _processManager.ProcessStarted += OnProcessManagerProcessStarted;
+            _processManager.ProcessExited += OnProcessManagerProcessExited;
         }
 
         public IFader? Fader { get; }
@@ -137,11 +149,36 @@ namespace Lib.Audio
             
             Controllable?.SetVolume(fader.RelativePosition);
         }
+        
+        private void OnProcessManagerProcessStarted(object? sender, IObservedProcess process)
+        {
+            if (Controllable?.Process == null)
+                return;
+            
+            if (!Controllable.Process.IsSameExecutable(process))
+                return;
+
+            Controllable = _controllableCollector.GetControllableForProcess(process);
+        }
+        
+        private void OnProcessManagerProcessExited(object? sender, IObservedProcess process)
+        {
+            if (Controllable?.Process == null)
+                return;
+            
+            if (!Controllable.Process.IsSameExecutable(process))
+                return;
+
+            Controllable.IsValid = false; //TODO: Toggle Record button led
+        }
 
         public override string ToString() => $"Channel {_channelNumber}";
 
         public void Dispose()
         {
+            _processManager.ProcessStarted -= OnProcessManagerProcessStarted;
+            _processManager.ProcessExited -= OnProcessManagerProcessExited;
+            
             UnMapControllable();
             _midiCommunication.Send(new PitchWheelChangeMessage(0, _channelNumber, 0));
         }

Lib.Audio/Controllable.cs

@@ -5,6 +5,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using Lib.Audio.Interfaces;
+using Lib.ProcessManaging.Interfaces;
 using NAudio.CoreAudioApi;
 
 namespace Lib.Audio
@@ -13,12 +14,15 @@ namespace Lib.Audio
     {
         private readonly List<AudioSessionControl> _audioSessionControls;
 
-        public Controllable(List<AudioSessionControl> audioSessionControls, string name)
+        public Controllable(List<AudioSessionControl> audioSessionControls, IObservedProcess? process, string name)
         {
             _audioSessionControls = audioSessionControls;
+            Process = process;
             Name = name;
         }
 
+        public bool IsValid { get; set; } = true;
+        public IObservedProcess? Process { get; }
         public string Name { get; }
         public string? IconPath => _audioSessionControls.FirstOrDefault(c => !string.IsNullOrEmpty(c.IconPath))?.IconPath;
 

Lib.Audio/ControllableCollector.cs

@@ -4,10 +4,10 @@
 
 using System;
 using System.Collections.Generic;
-using System.Diagnostics;
 using System.Linq;
 using Lib.Audio.Factories;
 using Lib.Audio.Interfaces;
+using Lib.ProcessManaging.Interfaces;
 using NAudio.CoreAudioApi;
 using NAudio.CoreAudioApi.Interfaces;
 
@@ -15,11 +15,20 @@ namespace Lib.Audio
 {
     public class ControllableCollector : IControllableCollector
     {
+        private readonly IProcessManager _processManager; 
         private readonly IControllableFactory _controllableFactory;
 
-        public ControllableCollector(IControllableFactory controllableFactory) => _controllableFactory = controllableFactory;
+        public ControllableCollector(IProcessManager processManager, IControllableFactory controllableFactory)
+        {
+            _processManager = processManager;
+            _controllableFactory = controllableFactory;
+        }
 
         public List<IControllable> Controllables => CreateControllables();
+        
+        public IControllable? GetControllableForProcess(IObservedProcess process) => 
+            Controllables.FirstOrDefault(c => c.Process != null && c.Process.IsSameExecutable(process));
+
         private List<IControllable> CreateControllables()
         {
             MMDeviceEnumerator deviceEnumerator = new();
@@ -54,7 +63,7 @@ namespace Lib.Audio
             {
                 List<AudioSessionControl> idSessions = sessionsById[id];
                     
-                (Process? process, AudioSessionControl? audioSessionControl) = FindProcess(idSessions);
+                (IObservedProcess? process, AudioSessionControl? audioSessionControl) = FindProcess(idSessions);
                 if (audioSessionControl == null || process == default && !idSessions.Any(s => s.IsSystemSoundsSession))
                     continue;
 
@@ -62,25 +71,23 @@ namespace Lib.Audio
                 if (idSessions.Any(s => s.IsSystemSoundsSession))
                     name = "System Sounds";
                 else if (process != null)
-                    name = process.ProcessName;
+                    name = process.Name;
                 else
                     name = id;
                 
-                controllables.Add(_controllableFactory.Create(idSessions, name));
+                controllables.Add(_controllableFactory.Create(idSessions, process, name));
             }
             
             return controllables;
         }
 
-        private (Process? process, AudioSessionControl? session) FindProcess(List<AudioSessionControl> sessions)
+        private (IObservedProcess? process, AudioSessionControl? session) FindProcess(List<AudioSessionControl> sessions)
         {
-            try
-            {
-                foreach (var session in sessions)
-                    return (Process.GetProcessById((int) session.GetProcessID), session);
-            }
-            catch (ArgumentException)
+            foreach (var session in sessions)
             {
+                IObservedProcess? process = _processManager.GetProcessById((int) session.GetProcessID);
+                if (process != null)
+                    return (process, session);
             }
             
             return (null, null);

Lib.Audio/Device.cs

@@ -20,13 +20,13 @@ namespace Lib.Audio
         private readonly IMidiCommunication _midiCommunication;
         private readonly IChannelFactory _channelFactory;
 
-        public Device(IDriver driver, IMidiCommunicationFactory midiCommunicationFactory, IChannelFactory channelFactory)
+        public Device(IDriver driver, IControllableCollector controllableCollector, IMidiCommunicationFactory midiCommunicationFactory, IChannelFactory channelFactory)
         {
             _driver = driver;
             _midiCommunication = midiCommunicationFactory.Create(driver);
             _channelFactory = channelFactory;
 
-            Channels = InitializeChannels();
+            Channels = InitializeChannels(controllableCollector);
             
             _midiCommunication.MessageReceived += OnMidiCommunicationMessageReceived;
             _midiCommunication.ErrorReceived += OnMidiCommunicationErrorReceived;
@@ -36,8 +36,8 @@ namespace Lib.Audio
         public List<IChannel> Channels { get; }
         
         public void StartCommunication(bool useMidiView) => _midiCommunication.Open(useMidiView);
-        private List<IChannel> InitializeChannels() => _driver.Channels == null ? new List<IChannel>()
-            : _driver.Channels.Select(c => _channelFactory.Create(c, _midiCommunication)).ToList();
+        private List<IChannel> InitializeChannels(IControllableCollector controllableCollector) => _driver.Channels == null ? new List<IChannel>()
+            : _driver.Channels.Select(c => _channelFactory.Create(c, controllableCollector, _midiCommunication)).ToList();
 
         private void OnMidiCommunicationMessageReceived(object? sender, IMidiMessage message)
         {

Lib.Audio/Factories/IChannelFactory.cs

@@ -10,6 +10,7 @@ namespace Lib.Audio.Factories
 {
     public interface IChannelFactory
     {
-        IChannel Create(XmlChannel xmlChannel, IMidiCommunication midiCommunication);
+        IChannel Create(XmlChannel xmlChannel, IControllableCollector controllableCollector,
+            IMidiCommunication midiCommunication);
     }
 }

Lib.Audio/Factories/IControllableFactory.cs

@@ -4,13 +4,14 @@
 
 using System.Collections.Generic;
 using Lib.Audio.Interfaces;
+using Lib.ProcessManaging.Interfaces;
 using NAudio.CoreAudioApi;
 
 namespace Lib.Audio.Factories
 {
     public interface IControllableFactory
     {
-        IControllable Create(List<AudioSessionControl> audioSessionControls, string name);
+        IControllable Create(List<AudioSessionControl> audioSessionControls, IObservedProcess? process, string name);
         IMasterControllable Create(AudioEndpointVolume audioEndpointVolume, string name);
     }
 }

Lib.Audio/Factories/IDeviceFactory.cs

@@ -9,6 +9,6 @@ namespace Lib.Audio.Factories
 {
     public interface IDeviceFactory
     {
-        IDevice Create(IDriver driver);
+        IDevice Create(IDriver driver, IControllableCollector controllableCollector);
     }
 }

Lib.Audio/Interfaces/IControllable.cs

@@ -2,10 +2,15 @@
 // Created: 2021-04-07
 // Copyright(c) 2021 SimonG. All Rights Reserved.
 
+using Lib.ProcessManaging.Interfaces;
+
 namespace Lib.Audio.Interfaces
 {
     public interface IControllable
     {
+        bool IsValid { get; set; }
+        IObservedProcess? Process { get; }
+        
         string Name { get; }
         string? IconPath { get; }
         

Lib.Audio/Interfaces/IControllableCollector.cs

@@ -3,11 +3,14 @@
 // Copyright(c) 2021 SimonG. All Rights Reserved.
 
 using System.Collections.Generic;
+using Lib.ProcessManaging.Interfaces;
 
 namespace Lib.Audio.Interfaces
 {
     public interface IControllableCollector
     {
         List<IControllable> Controllables { get; }
+
+        IControllable? GetControllableForProcess(IObservedProcess process);
     }
 }

Lib.Audio/Lib.Audio.csproj

@@ -13,6 +13,7 @@
     <ItemGroup>
       <ProjectReference Include="..\Lib.Driver\Lib.Driver.csproj" />
       <ProjectReference Include="..\Lib.Midi\Lib.Midi.csproj" />
+      <ProjectReference Include="..\Lib.ProcessManaging\Lib.ProcessManaging.csproj" />
     </ItemGroup>
 
 </Project>

Lib.Audio/MasterControllable.cs

@@ -3,6 +3,7 @@
 // Copyright(c) 2021 SimonG. All Rights Reserved.
 
 using Lib.Audio.Interfaces;
+using Lib.ProcessManaging.Interfaces;
 using NAudio.CoreAudioApi;
 
 namespace Lib.Audio
@@ -19,6 +20,8 @@ namespace Lib.Audio
             _controllableCollector = controllableCollector;
         }
 
+        public bool IsValid { get; set; }
+        public IObservedProcess? Process { get; }
         public string Name { get; }
         public string? IconPath => null;
 

Mystify/MainModel.cs

@@ -40,8 +40,8 @@ namespace Mystify
             if (driver == null)
                 throw new Exception("Driver could not be loaded.");
             
-            _device = _deviceFactory.Create(driver);
             _controllableCollector = _controllableCollectorFactory.Create();
+            _device = _deviceFactory.Create(driver, _controllableCollector);
             
             _device.StartCommunication(UseMidiView);
         }