add realtime updated levelmeters in Unity Editor

UnityProject/Assets/Editor/LevelMeter.cs

@@ -5,14 +5,20 @@ namespace cylvester
 {
     public class LevelMeter
     {
-        private string label_;
+        private const int TextureWidth = 1;
-        private float dB_;
+        private const int TextureHeight = 100;
-        private Texture2D meterImageTexture_;
 
-        public LevelMeter(int index)
+        private readonly Texture2D meterImageTexture_;
+        private readonly int index_;
+        private readonly string label_;
+        private readonly IPdArray pdArray_;
+        
+        public LevelMeter(int index, IPdArray pdArray)
         {
-            label_ = (index + 1).ToString();
+            index_ = index;
-            meterImageTexture_ = new Texture2D(1, 32);
+            label_ = (index_ + 1).ToString();
+            pdArray_ = pdArray;
+            meterImageTexture_ = new Texture2D(TextureWidth, TextureHeight);
         }
         
         public void Render()
@@ -33,9 +39,10 @@ namespace cylvester
         
         private void UpdateTexture()
         {
-            for (var i = 0; i < 32; ++i)
+            var level = pdArray_.Data[index_];
+            for (var i = 0; i < 100; ++i)
             {
-                meterImageTexture_.SetPixel(0, i, i < 10 ? Color.green : Color.black);
+                meterImageTexture_.SetPixel(0, i, i < level ? Color.green : Color.black);
             }
             meterImageTexture_.Apply();
         }

UnityProject/Assets/Editor/PdConsole.cs

@@ -1,25 +1,27 @@
-using UnityEditor;
+using System;
-using UnityEngine;
+using UnityEditor;
 
 namespace cylvester
 {
     public class PdConsole : EditorWindow
     {
+        private const int NumChannels = 16;
+        
         private IEditorToggle dspToggle_;
         private ITogglePresenter togglePresenter_;
+        private Action onDspToggleStateChanged_;
         private IPdBackend pdBackend_;
         private LevelMeter[] levelMeters_;
+        private PdArray levelMeterArray_;
 
         [MenuItem("SoundVision/Pd console %#p")]
         static void Init()
         {
             var window = (PdConsole)GetWindow(typeof(PdConsole));
             window.Show();
-
-            
         }
 
-        private void OnEnable()
+        private void Awake()
         { 
             var foundObjects = FindObjectsOfType(typeof(PdBackend));
             if (foundObjects.Length != 1)
@@ -28,40 +30,70 @@ namespace cylvester
             pdBackend_ = (IPdBackend) foundObjects[0];
             dspToggle_ = new EditorToggle();
             
+            onDspToggleStateChanged_ = () =>
+            {
+                if (pdBackend_.State)
+                {
+                    levelMeterArray_ = new PdArray("levelmeters", NumChannels);
+                    for (var i = 0; i < NumChannels; ++i)
+                        levelMeters_[i] = new LevelMeter(i, levelMeterArray_);
+                }
+                else
+                    levelMeterArray_.Dispose();
+            };
+
+            pdBackend_.StateChanged += onDspToggleStateChanged_;
             togglePresenter_ = new TogglePresenter(dspToggle_, pdBackend_);
-            levelMeters_ = new LevelMeter[16];
+            levelMeters_ = new LevelMeter[NumChannels];
-            for (var i = 0; i < 16; ++i)
+            
-                levelMeters_[i] = new LevelMeter(i);
+
+        }
+
+        private void OnDestroy()
+        {
+            levelMeterArray_?.Dispose();
+            dspToggle_.ToggleStateChanged -= onDspToggleStateChanged_;
         }
 
         private void OnGUI ()
         {
-            if(!ValidatePdBackend(pdBackend_))
+            if(!ValidatePdBackend())
                 return;
 
             EditorGUILayout.Space();
             dspToggle_.State = EditorGUILayout.Toggle("Pure Data Process", dspToggle_.State);
 
+            if(!CheckProcessingState())
+                return;
+            
             EditorGUILayout.Space();
             EditorGUILayout.BeginHorizontal();
+            
+            levelMeterArray_.Update();
             foreach (var levelMeter in levelMeters_)
                 levelMeter.Render();
 
             EditorGUILayout.EndHorizontal();
             
+            Repaint();
+
         }
-        
+        private bool ValidatePdBackend()
-
-
-        private bool ValidatePdBackend(IPdBackend pdBackend)
-        {
-            var exist = pdBackend_ != null;
-            if (!exist)
         {
+            if (pdBackend_ != null) 
+                return true;
             EditorGUILayout.LabelField("No Pd backend found in the scene");
+            return false;
         }
-            return exist;
+
+        private bool CheckProcessingState()
+        {
+            if (pdBackend_.State) 
+                return true;
+            EditorGUILayout.LabelField("Pd process is currently inactive");
+            return false;
         }
+        
     }
 
 }

UnityProject/Assets/PdBackend.meta

@@ -1,8 +0,0 @@
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-guid: 7978207823e9dad49b91f32a347617a0
-folderAsset: yes
-DefaultImporter:
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UnityProject/Assets/Scenes/Examples/PdBackendDemo/PdBackendDemo.unity

@@ -218,14 +218,13 @@ MonoBehaviour:
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 987772532}
-  m_Enabled: 1
+  m_Enabled: 0
   m_EditorHideFlags: 0
   m_Script: {fileID: 11500000, guid: 3ba69cee3466a304d9d570268f717413, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  mainPatch: test.pd
+  mainPatch: analyzer.pd
   inchannels: 2
-  pdProcess: 0
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@@ -309,107 +308,3 @@ Transform:
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UnityProject/Assets/Scripts/PdConnection/PdArray.cs

@@ -3,7 +3,13 @@ using System.IO.MemoryMappedFiles;
 
 namespace cylvester
 {
-    public class PdArray : IDisposable
+    public interface IPdArray
+    {
+        float[] Data { get; }
+        void Update();
+    }
+
+    public class PdArray : IDisposable, IPdArray
     {
         public float[] Data { get; }
 

UnityProject/Assets/Scripts/PdConnection/PdBackend.cs

@@ -1,11 +1,13 @@
 using System;
+using System.Threading;
 using UnityEngine;
 
 namespace cylvester
 {
     public interface IPdBackend
     {
-        bool State { set; }
+        bool State { set; get; }
+        event Action StateChanged;
     }
     
     [ExecuteInEditMode]
@@ -19,6 +21,7 @@ namespace cylvester
         private void OnEnable()
         {
             PdProcess.Instance.Start(mainPatch, inchannels);
+            Thread.Sleep(500);
         }
 
         private void OnDisable()
@@ -28,7 +31,15 @@ namespace cylvester
 
         public bool State
         {
-            set => enabled = value;
+            set
+            {
+                enabled = value;
+                if(StateChanged != null)
+                    StateChanged.Invoke();
             }
+            get => enabled;
+        }
+
+        public event Action StateChanged;
     }
 }

UnityProject/Assets/Scripts/PdConnection/PdProcess.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Diagnostics;
 using UnityEngine;
 using Debug = UnityEngine.Debug;
@@ -19,10 +20,7 @@ namespace cylvester
         {
         }
 
-        public static PdProcess Instance
+        public static PdProcess Instance => instance_ ?? (instance_ = new PdProcess());
-        {
-            get { return instance_ ?? (instance_ = new PdProcess()); }
-        }
 
         public void Start(string mainPatch, int numInputChannels)
         {
@@ -31,12 +29,16 @@ namespace cylvester
     
             pdProcess_ = new Process();
             pdProcess_.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
-            pdProcess_.StartInfo.UseShellExecute = true;
+            pdProcess_.StartInfo.UseShellExecute = false;
             pdProcess_.StartInfo.FileName = Application.streamingAssetsPath + "/pd/win/pd.com";
 
             var path = Application.streamingAssetsPath + "/pd/patch/" + mainPatch;
             pdProcess_.StartInfo.Arguments = "-nogui -rt -inchannels " + numInputChannels + " " + path;
-            pdProcess_.Start();
+
+            if (!pdProcess_.Start())
+            {
+                throw new Exception("Pd process failed to start");
+            }
             Debug.Log("Pd Process started");
 
         }
@@ -47,5 +49,6 @@ namespace cylvester
             pdProcess_ = null;
             Debug.Log("Pd Process stopped");
         }
+
     }
 }

UnityProject/Assets/StreamingAssets/pd/mac.meta

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UnityProject/Assets/StreamingAssets/pd/patch/test.pd

@@ -1,9 +0,0 @@
-#N canvas 646 421 450 300 10;
-#X obj 137 120 dac~;
-#X obj 99 41 osc~ 440;
-#X obj 142 74 *~ 0.1;
-#X msg 232 96 \; pd dsp 1;
-#X obj 238 55 loadbang;
-#X connect 1 0 2 0;
-#X connect 2 0 0 0;
-#X connect 4 0 3 0;

UnityProject/Assets/StreamingAssets/pd/patch/test.pd.meta

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