Added clipping filter

ExampleFilters/radio.eff

@@ -0,0 +1,12 @@
+<effect name="Radio">
+    <biquad type="notch" fc="140" q="20" gain="-50" />
+    <amplifier gain="0.1" />
+    <biquad type="peak" fc="1000" q="10" gain="45" />
+    <lfo frequency="5000" depth="0.3" />
+    <clipping clip="0.3" />
+    <biquad type="highshelf" fc="8000" q="1" gain="-20" />
+    <delayline>
+        <delay samples="100" gain="0.7" />
+        <delay samples="200" gain="0.5" />
+    </delayline>
+</effect>

src/uk/co/majenko/audiobookrecorder/AGC.java

@@ -14,6 +14,7 @@ public class AGC implements Effect {
         attack = a;
         decay = d;
         limit = l;
+        gain = 1d;
     }
 
     public String getName() {

src/uk/co/majenko/audiobookrecorder/AudiobookRecorder.java

@@ -2654,6 +2654,11 @@ System.err.println(format);
                     if (eff != null) {
                         group.addEffect(eff);
                     }
+                } else if (e.getTagName().equals("clipping")) {
+                    Effect eff = (Effect)loadClipping(e);
+                    if (eff != null) {
+                        group.addEffect(eff);
+                    }
                 }
             }
         }
@@ -2739,6 +2744,11 @@ System.err.println(format);
                                 if (eff != null) {
                                     store.addEffect(eff);
                                 }
+                            } else if (ie.getTagName().equals("clipping")) {
+                                Effect eff = (Effect)loadClipping(ie);
+                                if (eff != null) {
+                                    store.addEffect(eff);
+                                }
                             }
                         }
                     }
@@ -2754,6 +2764,11 @@ System.err.println(format);
         return a;
     }
 
+    public Clipping loadClipping(Element root) {
+        Clipping c = new Clipping(Utils.s2d(root.getAttribute("clip")));
+        return c;
+    }
+
     public LFO loadLFO(Element root) {
         double f = Utils.s2d(root.getAttribute("frequency"));
         double d = Utils.s2d(root.getAttribute("depth"));

src/uk/co/majenko/audiobookrecorder/Clipping.java

@@ -0,0 +1,46 @@
+package uk.co.majenko.audiobookrecorder;
+
+import java.util.ArrayList;
+
+public class Clipping implements Effect {
+    double clip;
+    public Clipping() {
+        clip = 1.0d;
+    }
+    public Clipping(double g) {
+        clip = g;
+    }
+
+    public String getName() {
+        return "Clipping (" + clip + ")";
+    }
+
+    public ArrayList<Effect> getChildEffects() {
+        return null;
+    }
+
+    public double process(double sample) {
+        if (sample > clip) return clip;
+        if (sample < -clip) return -clip;
+        return sample;
+    }
+
+    public double getClip() {
+        return clip;
+    }
+   
+    public void setClip(double g) {
+        clip = g;
+    }
+
+    public String toString() {
+        return getName();
+    }
+
+    public void dump() {
+        System.out.println(toString());
+    }
+
+    public void init(double sf) {
+    }
+}