1 files changed, 77 insertions, 0 deletions
diff --git a/src/main/java/com/jsyn/unitgen/MixerMono.java b/src/main/java/com/jsyn/unitgen/MixerMono.java
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+++ b/src/main/java/com/jsyn/unitgen/MixerMono.java
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+/*
+ * Copyright 2014 Phil Burk, Mobileer Inc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.jsyn.unitgen;
+
+import com.jsyn.ports.UnitInputPort;
+import com.jsyn.ports.UnitOutputPort;
+
+/**
+ * Multi-channel mixer with mono output and master amplitude.
+ * 
+ * @author Phil Burk (C) 2014 Mobileer Inc
+ * @see MixerMonoRamped
+ * @see MixerStereo
+ */
+public class MixerMono extends UnitGenerator implements UnitSink, UnitSource {
+    public UnitInputPort input;
+    /**
+     * Linear gain for the corresponding input.
+     */
+    public UnitInputPort gain;
+    /**
+     * Master gain control.
+     */
+    public UnitInputPort amplitude;
+    public UnitOutputPort output;
+
+    public MixerMono(int numInputs) {
+        addPort(input = new UnitInputPort(numInputs, "Input"));
+        addPort(gain = new UnitInputPort(numInputs, "Gain", 1.0));
+        addPort(amplitude = new UnitInputPort("Amplitude", 1.0));
+        addPort(output = new UnitOutputPort(getNumOutputs(), "Output"));
+    }
+
+    public int getNumOutputs() {
+        return 1;
+    }
+
+    @Override
+    public void generate(int start, int limit) {
+        double[] amplitudes = amplitude.getValues(0);
+        double[] outputs = output.getValues(0);
+        for (int i = start; i < limit; i++) {
+            double sum = 0;
+            for (int n = 0; n < input.getNumParts(); n++) {
+                double[] inputs = input.getValues(n);
+                double[] gains = gain.getValues(n);
+                sum += inputs[i] * gains[i];
+            }
+            outputs[i] = sum * amplitudes[i];
+        }
+    }
+
+    @Override
+    public UnitInputPort getInput() {
+        return input;
+    }
+
+    @Override
+    public UnitOutputPort getOutput() {
+        return output;
+    }
+
+}