1 files changed, 134 insertions, 0 deletions
diff --git a/src/com/jsyn/util/WaveRecorder.java b/src/com/jsyn/util/WaveRecorder.java
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+++ b/src/com/jsyn/util/WaveRecorder.java
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+/*
+ * Copyright 2011 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.util;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+
+import com.jsyn.Synthesizer;
+import com.jsyn.ports.UnitInputPort;
+
+/**
+ * Connect a unit generator to the input. Then start() recording. The signal will be written to a
+ * WAV format file that can be read by other programs.
+ * 
+ * @author Phil Burk (C) 2011 Mobileer Inc
+ */
+public class WaveRecorder {
+    private AudioStreamReader reader;
+    private WaveFileWriter writer;
+    private StreamingThread thread;
+    private Synthesizer synth;
+    private TransportModel transportModel = new TransportModel();
+    private double maxRecordingTime;
+
+    /**
+     * Create a stereo 16-bit recorder.
+     * 
+     * @param synth
+     * @param outputFile
+     * @throws FileNotFoundException
+     */
+    public WaveRecorder(Synthesizer synth, File outputFile) throws FileNotFoundException {
+        this(synth, outputFile, 2, 16);
+    }
+
+    public WaveRecorder(Synthesizer synth, File outputFile, int samplesPerFrame)
+            throws FileNotFoundException {
+        this(synth, outputFile, samplesPerFrame, 16);
+    }
+
+    /**
+     * @param synth
+     * @param outputFile
+     * @param samplesPerFrame 1 for mono, 2 for stereo
+     * @param bitsPerSample 16 or 24
+     * @throws FileNotFoundException
+     */
+    public WaveRecorder(Synthesizer synth, File outputFile, int samplesPerFrame, int bitsPerSample)
+            throws FileNotFoundException {
+        this.synth = synth;
+        reader = new AudioStreamReader(synth, samplesPerFrame);
+
+        writer = new WaveFileWriter(outputFile);
+        writer.setFrameRate(synth.getFrameRate());
+        writer.setSamplesPerFrame(samplesPerFrame);
+        writer.setBitsPerSample(bitsPerSample);
+    }
+
+    public UnitInputPort getInput() {
+        return reader.getInput();
+    }
+
+    public void start() {
+        stop();
+        thread = new StreamingThread(reader, writer);
+        thread.setTransportModel(transportModel);
+        thread.setSamplesPerFrame(writer.getSamplesPerFrame());
+        updateMaxRecordingTime();
+        thread.start();
+    }
+
+    public void stop() {
+        if (thread != null) {
+            thread.requestStop();
+            try {
+                thread.join(500);
+            } catch (InterruptedException e) {
+            }
+            thread = null;
+        }
+    }
+
+    /** Close and disconnect any connected inputs. */
+    public void close() throws IOException {
+        stop();
+        if (writer != null) {
+            writer.close();
+            writer = null;
+        }
+        if (reader != null) {
+            reader.close();
+            for (int i = 0; i < reader.getInput().getNumParts(); i++) {
+                reader.getInput().disconnectAll(i);
+            }
+            reader = null;
+        }
+    }
+
+    public void addTransportListener(TransportListener listener) {
+        transportModel.addTransportListener(listener);
+    }
+
+    public void removeTransportListener(TransportListener listener) {
+        transportModel.removeTransportListener(listener);
+    }
+
+    public void setMaxRecordingTime(double maxRecordingTime) {
+        this.maxRecordingTime = maxRecordingTime;
+        updateMaxRecordingTime();
+    }
+
+    private void updateMaxRecordingTime() {
+        StreamingThread streamingThread = thread;
+        if (streamingThread != null) {
+            long maxFrames = (long) (maxRecordingTime * synth.getFrameRate());
+            streamingThread.setMaxFrames(maxFrames);
+        }
+    }
+}