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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);
}
}
}
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