1 files changed, 112 insertions, 0 deletions
diff --git a/src/main/java/com/jsyn/ports/InputMixingBlockPart.java b/src/main/java/com/jsyn/ports/InputMixingBlockPart.java
new file mode 100644
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+++ b/src/main/java/com/jsyn/ports/InputMixingBlockPart.java
@@ -0,0 +1,112 @@
+/*
+ * Copyright 2009 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.ports;
+
+import java.io.PrintStream;
+
+import com.jsyn.Synthesizer;
+import com.jsyn.unitgen.UnitGenerator;
+
+/**
+ * A UnitInputPort has an array of these, one for each part.
+ *
+ * @author Phil Burk 2009 Mobileer Inc
+ */
+
+public class InputMixingBlockPart extends PortBlockPart {
+    private double[] mixer = new double[Synthesizer.FRAMES_PER_BLOCK];
+    private double current;
+    private UnitInputPort unitInputPort;
+
+    InputMixingBlockPart(UnitInputPort unitInputPort, double defaultValue) {
+        super(unitInputPort, defaultValue);
+        this.unitInputPort = unitInputPort;
+    }
+
+    @Override
+    public double getValue() {
+        return current;
+    }
+
+    @Override
+    protected void setValue(double value) {
+        current = value;
+        super.setValue(value);
+    }
+
+    @Override
+    public double[] getValues() {
+        double[] result;
+        int numConnections = getConnectionCount();
+        // LOGGER.debug("numConnection = " + numConnections + " for " +
+        // this );
+        if (numConnections == 0) {
+            // No connection so just use our own data.
+            result = super.getValues();
+        } else {
+            // Mix all of the connected ports.
+            double[] inputs;
+            int jCon = 0;
+            PortBlockPart otherPart;
+            // Choose value to initialize the mixer array.
+            if (unitInputPort.isValueAdded()) {
+                inputs = super.getValues();  // prime mixer with the set() values
+                jCon = 0;
+            } else {
+                otherPart = getConnection(jCon);
+                inputs = otherPart.getValues(); // prime mixer with first connected
+                jCon = 1;
+            }
+            for (int i = 0; i < mixer.length; i++) {
+                mixer[i] = inputs[i];
+            }
+            // Now mix in the remaining inputs.
+            for (; jCon < numConnections; jCon++) {
+                otherPart = getConnection(jCon);
+                inputs = otherPart.getValues();
+                for (int i = 0; i < mixer.length; i++) {
+                    mixer[i] += inputs[i];
+                }
+            }
+            result = mixer;
+        }
+        current = result[0];
+        return result;
+    }
+
+    private void printIndentation(PrintStream out, int level) {
+        for (int i = 0; i < level; i++) {
+            out.print("    ");
+        }
+    }
+
+    private String portToString(UnitBlockPort port) {
+        UnitGenerator ugen = port.getUnitGenerator();
+        return ugen.getClass().getSimpleName() + "." + port.getName();
+    }
+
+    public void printConnections(PrintStream out, int level) {
+        for (int i = 0; i < getConnectionCount(); i++) {
+            PortBlockPart part = getConnection(i);
+
+            printIndentation(out, level);
+            out.println(portToString(getPort()) + " <--- " + portToString(part.getPort()));
+
+            part.getPort().getUnitGenerator().printConnections(out, level + 1);
+        }
+    }
+}