Control inputs for delay are now working.

Author: Hannes Barfuss

Assets/Scripts/Delay/delaySignalGenerator.cs

@@ -33,8 +33,8 @@ public enum Param : int
     private float[] p = new float[(int)Param.P_N];
     private bool shouldClear = false;
 
-    private float[] cTimeBuffer = new float[2] { 0, 0 };
-    private float[] cFeedbackBuffer = new float[2] { 0, 0 };
+    private float[] cTimeBuffer = new float[0];
+    private float[] cFeedbackBuffer = new float[0];
     private float cTime;
     private float cFeedback;
 
@@ -54,10 +54,10 @@ public void SetParam(float value, int param)
         switch(param)
         {
             case (int)Param.P_TIME:
-                p[param] = Utils.map(Mathf.Pow(value, 3), 0, 1, MIN_TIME * AudioSettings.outputSampleRate, MAX_TIME * AudioSettings.outputSampleRate);
+                p[param] = value; //this is finally set in process method
                 break;
             case (int)Param.P_FEEDBACK:
-                p[param] = Utils.map(value, 0, 1, MIN_FEEDBACK, MAX_FEEDBACK);
+                p[param] = value; //this is finally set in process method
                 break;
             case (int)Param.P_WET:
                 p[param] = Utils.dbToLin( Utils.map(value, 0, 1, MIN_WET, MAX_WET, 0.8f) );
@@ -101,11 +101,6 @@ public override void processBuffer(float[] buffer, double dspTime, int channels)
             shouldClear = false;
         }
 
-        Delay_SetParam(p[(int)Param.P_TIME], (int)Param.P_TIME, x);
-        Delay_SetParam(p[(int)Param.P_FEEDBACK], (int)Param.P_FEEDBACK, x);
-        Delay_SetParam(p[(int)Param.P_WET], (int)Param.P_WET, x);
-        Delay_SetParam(p[(int)Param.P_DRY], (int)Param.P_DRY, x);
-
         if (input != null)
         {
             input.processBuffer(buffer, dspTime, channels);
@@ -125,6 +120,11 @@ public override void processBuffer(float[] buffer, double dspTime, int channels)
             cFeedback = cFeedbackBuffer[0];
         }
 
+        Delay_SetParam(Utils.map(Mathf.Pow(Mathf.Clamp01(p[(int)Param.P_TIME] + cTime), 3), 0, 1, MIN_TIME * AudioSettings.outputSampleRate, MAX_TIME * AudioSettings.outputSampleRate), (int)Param.P_TIME, x);
+        Delay_SetParam(Utils.map(Mathf.Clamp01(p[(int)Param.P_FEEDBACK] + cFeedback), 0, 1, MIN_FEEDBACK, MAX_FEEDBACK), (int)Param.P_FEEDBACK, x);
+        Delay_SetParam(p[(int)Param.P_WET], (int)Param.P_WET, x);
+        Delay_SetParam(p[(int)Param.P_DRY], (int)Param.P_DRY, x);
+
         //We need to process the delay even if there is currently no input,
         //bc there could be unconsumed samples from a previous input left in the delay line.
         //To optimize, we could store the timestamp when the last input connection was removed.

Assets/SoundStageNative/arm64/Release/libSoundStageNative.so

@@ -7,9 +7,6 @@
 
 #define DELAY_MAXVECTORSIZE 4096
 
-#define DELAY_MAXTIME 96000 //in samples
-#define DELAY_MINTIME 512 //in bucket brigade mode, shorter delay means more oversampling, so we have to set a reasonable limit.
-
 enum DelayParams
 {
     P_TIME,
@@ -21,9 +18,9 @@ enum DelayParams
 
 void Delay_ProcessPitchShift(float buffer[], int n, int channels, float cTime, float cFeedback, DelayData* x)
 {
-    /* Prepare */
-    int time = cTime != 0 ? (x->maxTime - x->time) * cTime : x->time;
-    float feedback = cFeedback != 0 ? (1.0f - x->feedback) * cFeedback : x->feedback;
+    // Prepare
+    int time = x->time;
+    float feedback = x->feedback;
 
     assert(time > 0);
 
@@ -33,7 +30,7 @@ void Delay_ProcessPitchShift(float buffer[], int n, int channels, float cTime, f
     if(channels > 1)
         _fDeinterleave(buffer, buffer, n, channels);
 
-    /* Process delay */
+    // Process delay
     int m;
     int r = nPerChannel;
     float* bufOffset = buffer;
@@ -57,7 +54,7 @@ void Delay_ProcessPitchShift(float buffer[], int n, int channels, float cTime, f
         r -= m;
     }
 
-    /* Finalize */
+    // Finalize
     if(channels > 1)
     {
         for(int i = 1; i < channels; i++)

SoundStageNative/Delay.cpp

@@ -3,6 +3,7 @@
 
 #include "main.h"
 #include "RingBuffer.h"
+#include "CompressedRingBuffer.h"
 
 struct DelayData
 {