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Merge pull request #11159 from rvsathe/master

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commits for BAEL 4293
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doodoroma 2021-09-21 22:21:22 +02:00 committed by GitHub
commit ed777a4654
6 changed files with 368 additions and 85 deletions
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177
core-java-modules/core-java-os/pom.xml
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<?xml version="1.0" encoding="UTF-8"?> <?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" <project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion> <modelVersion>4.0.0</modelVersion>
<artifactId>core-java-os</artifactId> <artifactId>core-java-os</artifactId>
<version>0.1.0-SNAPSHOT</version> <version>0.1.0-SNAPSHOT</version>
<name>core-java-os</name> <name>core-java-os</name>
<packaging>jar</packaging> <packaging>jar</packaging>
<parent> <parent>
<groupId>com.baeldung.core-java-modules</groupId> <groupId>com.baeldung.core-java-modules</groupId>
<artifactId>core-java-modules</artifactId> <artifactId>core-java-modules</artifactId>
<version>0.0.1-SNAPSHOT</version> <version>0.0.1-SNAPSHOT</version>
<relativePath>../</relativePath> <relativePath>../</relativePath>
</parent> </parent>
<dependencies> <dependencies>
<dependency> <dependency>
<groupId>org.apache.commons</groupId> <groupId>org.junit.jupiter</groupId>
<artifactId>commons-collections4</artifactId> <artifactId>junit-jupiter-engine</artifactId>
<version>${commons-collections4.version}</version> <version>${junit-jupiter-engine.version}</version>
</dependency> <scope>test</scope>
<dependency> </dependency>
<groupId>commons-io</groupId> <dependency>
<artifactId>commons-io</artifactId> <groupId>org.apache.commons</groupId>
<version>${commons-io.version}</version> <artifactId>commons-collections4</artifactId>
</dependency> <version>${commons-collections4.version}</version>
<dependency> </dependency>
<groupId>org.apache.commons</groupId> <dependency>
<artifactId>commons-lang3</artifactId> <groupId>commons-io</groupId>
<version>${commons-lang3.version}</version> <artifactId>commons-io</artifactId>
</dependency> <version>${commons-io.version}</version>
<dependency> </dependency>
<groupId>log4j</groupId> <dependency>
<artifactId>log4j</artifactId> <groupId>org.apache.commons</groupId>
<version>${log4j.version}</version> <artifactId>commons-lang3</artifactId>
</dependency> <version>${commons-lang3.version}</version>
<!-- test scoped --> </dependency>
<dependency> <dependency>
<groupId>org.assertj</groupId> <groupId>log4j</groupId>
<artifactId>assertj-core</artifactId> <artifactId>log4j</artifactId>
<version>${assertj.version}</version> <version>${log4j.version}</version>
<scope>test</scope> </dependency>
</dependency> <!-- test scoped -->
<dependency> <dependency>
<groupId>org.unix4j</groupId> <groupId>org.assertj</groupId>
<artifactId>unix4j-command</artifactId> <artifactId>assertj-core</artifactId>
<version>${unix4j.version}</version> <version>${assertj.version}</version>
</dependency> <scope>test</scope>
<dependency> </dependency>
<groupId>com.googlecode.grep4j</groupId> <dependency>
<artifactId>grep4j</artifactId> <groupId>org.unix4j</groupId>
<version>${grep4j.version}</version> <artifactId>unix4j-command</artifactId>
</dependency> <version>${unix4j.version}</version>
</dependencies> </dependency>
<dependency>
<groupId>com.googlecode.grep4j</groupId>
<artifactId>grep4j</artifactId>
<version>${grep4j.version}</version>
</dependency>
</dependencies>
<build> <build>
<finalName>core-java-os</finalName> <finalName>core-java-os</finalName>
<resources> <resources>
<resource> <resource>
<directory>src/main/resources</directory> <directory>src/main/resources</directory>
<filtering>true</filtering> <filtering>true</filtering>
</resource> </resource>
</resources> </resources>
<plugins> <plugins>
<plugin> <plugin>
<groupId>org.apache.maven.plugins</groupId> <groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId> <artifactId>maven-compiler-plugin</artifactId>
<version>${maven-compiler-plugin.version}</version> <version>${maven-compiler-plugin.version}</version>
<configuration> <configuration>
<source>${maven.compiler.source}</source> <source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target> <target>${maven.compiler.target}</target>
</configuration> </configuration>
</plugin> </plugin>
</plugins> </plugins>
</build> </build>
<properties> <properties>
<!-- util --> <!-- util -->
<commons-collections4.version>4.1</commons-collections4.version> <commons-collections4.version>4.1</commons-collections4.version>
<collections-generic.version>4.01</collections-generic.version> <collections-generic.version>4.01</collections-generic.version>
<!-- testing --> <!-- testing -->
<assertj.version>3.6.1</assertj.version> <assertj.version>3.6.1</assertj.version>
<asspectj.version>1.8.9</asspectj.version> <asspectj.version>1.8.9</asspectj.version>
<maven.compiler.source>1.9</maven.compiler.source> <maven.compiler.source>1.9</maven.compiler.source>
<maven.compiler.target>1.9</maven.compiler.target> <maven.compiler.target>1.9</maven.compiler.target>
<guava.version>25.1-jre</guava.version> <guava.version>25.1-jre</guava.version>
<unix4j.version>0.4</unix4j.version> <unix4j.version>0.4</unix4j.version>
<grep4j.version>1.8.7</grep4j.version> <grep4j.version>1.8.7</grep4j.version>
</properties> <junit-jupiter-engine.version>5.7.2</junit-jupiter-engine.version>
</properties>
</project> </project>

34
core-java-modules/core-java-os/src/main/java/com/baeldung/example/soundapi/App.java Normal file
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package com.baeldung.example.soundapi;
import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioFormat;
public class App {
public static void main(String[] args) throws Exception {
AudioFormat format = buildAudioFormatInstance();
SoundRecorder soundRecorder = new SoundRecorder();
soundRecorder.build(format);
System.out.println("Start recording ....");
soundRecorder.start();
Thread.sleep(20000);
soundRecorder.stop();
WaveDataUtil wd = new WaveDataUtil();
Thread.sleep(3000);
wd.saveToFile("/SoundClip", AudioFileFormat.Type.WAVE, soundRecorder.getAudioInputStream());
}
public static AudioFormat buildAudioFormatInstance() {
ApplicationProperties aConstants = new ApplicationProperties();
AudioFormat.Encoding encoding = aConstants.ENCODING;
float rate = aConstants.RATE;
int channels = aConstants.CHANNELS;
int sampleSize = aConstants.SAMPLE_SIZE;
boolean bigEndian = aConstants.BIG_ENDIAN;
return new AudioFormat(encoding, rate, sampleSize, channels, (sampleSize / 8) * channels, rate, bigEndian);
}
}

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core-java-modules/core-java-os/src/main/java/com/baeldung/example/soundapi/ApplicationProperties.java Normal file
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package com.baeldung.example.soundapi;
import javax.sound.sampled.AudioFormat;
public class ApplicationProperties {
public final AudioFormat.Encoding ENCODING = AudioFormat.Encoding.PCM_SIGNED;
public final float RATE = 44100.0f;
public final int CHANNELS = 1;
public final int SAMPLE_SIZE = 16;
public final boolean BIG_ENDIAN = true;
}

123
core-java-modules/core-java-os/src/main/java/com/baeldung/example/soundapi/SoundRecorder.java Normal file
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package com.baeldung.example.soundapi;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.TargetDataLine;
public class SoundRecorder implements Runnable {
private AudioInputStream audioInputStream;
private AudioFormat format;
public Thread thread;
private double duration;
public SoundRecorder() {
super();
}
public SoundRecorder(AudioFormat format) {
this.format = format;
}
public SoundRecorder build(AudioFormat format) {
this.format = format;
return this;
}
public void start() {
thread = new Thread(this);
thread.setName("Capture Microphone");
thread.start();
}
public void stop() {
thread = null;
}
@Override
public void run() {
duration = 0;
try (final ByteArrayOutputStream out = new ByteArrayOutputStream(); final TargetDataLine line = getTargetDataLineForRecord();) {
int frameSizeInBytes = format.getFrameSize();
int bufferLengthInFrames = line.getBufferSize() / 8;
final int bufferLengthInBytes = bufferLengthInFrames * frameSizeInBytes;
buildByteOutputStream(out, line, frameSizeInBytes, bufferLengthInBytes);
this.audioInputStream = new AudioInputStream(line);
setAudioInputStream(convertToAudioIStream(out, frameSizeInBytes));
audioInputStream.reset();
} catch (IOException ex) {
ex.printStackTrace();
} catch (Exception ex) {
ex.printStackTrace();
return;
}
}
public void buildByteOutputStream(final ByteArrayOutputStream out, final TargetDataLine line, int frameSizeInBytes, final int bufferLengthInBytes) throws IOException {
final byte[] data = new byte[bufferLengthInBytes];
int numBytesRead;
line.start();
while (thread != null) {
if ((numBytesRead = line.read(data, 0, bufferLengthInBytes)) == -1) {
break;
}
out.write(data, 0, numBytesRead);
}
}
private void setAudioInputStream(AudioInputStream aStream) {
this.audioInputStream = aStream;
}
public AudioInputStream convertToAudioIStream(final ByteArrayOutputStream out, int frameSizeInBytes) {
byte audioBytes[] = out.toByteArray();
ByteArrayInputStream bais = new ByteArrayInputStream(audioBytes);
AudioInputStream audioStream = new AudioInputStream(bais, format, audioBytes.length / frameSizeInBytes);
long milliseconds = (long) ((audioInputStream.getFrameLength() * 1000) / format.getFrameRate());
duration = milliseconds / 1000.0;
System.out.println("Recorded duration in seconds:" + duration);
return audioStream;
}
public TargetDataLine getTargetDataLineForRecord() {
TargetDataLine line;
DataLine.Info info = new DataLine.Info(TargetDataLine.class, format);
if (!AudioSystem.isLineSupported(info)) {
return null;
}
try {
line = (TargetDataLine) AudioSystem.getLine(info);
line.open(format, line.getBufferSize());
} catch (final Exception ex) {
return null;
}
return line;
}
public AudioInputStream getAudioInputStream() {
return audioInputStream;
}
public AudioFormat getFormat() {
return format;
}
public void setFormat(AudioFormat format) {
this.format = format;
}
public Thread getThread() {
return thread;
}
public double getDuration() {
return duration;
}
}

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core-java-modules/core-java-os/src/main/java/com/baeldung/example/soundapi/WaveDataUtil.java Normal file
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package com.baeldung.example.soundapi;
import java.io.File;
import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
public class WaveDataUtil {
public boolean saveToFile(String name, AudioFileFormat.Type fileType, AudioInputStream audioInputStream) {
System.out.println("Saving...");
if (null == name || null == fileType || audioInputStream == null) {
return false;
}
File myFile = new File(name + "." + fileType.getExtension());
try {
audioInputStream.reset();
} catch (Exception e) {
return false;
}
int i = 0;
while (myFile.exists()) {
String temp = "" + i + myFile.getName();
myFile = new File(temp);
}
try {
AudioSystem.write(audioInputStream, fileType, myFile);
} catch (Exception ex) {
return false;
}
System.out.println("Saved " + myFile.getAbsolutePath());
return true;
}
}

75
core-java-modules/core-java-os/src/test/java/com/baeldung/example/soundapi/AppTest.java Normal file
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package com.baeldung.example.soundapi;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.Assertions;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.fail;
import java.io.ByteArrayOutputStream;
import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.TargetDataLine;
public class AppTest {
AudioFormat af = App.buildAudioFormatInstance();
SoundRecorder soundRecorder = new SoundRecorder();
@Test
public void Given_SoundRecorderObject_When_Run_Then_ThrowsNoException() {
soundRecorder.build(af);
try {
soundRecorder.start();
Thread.sleep(20000);
soundRecorder.stop();
} catch (InterruptedException ex) {
fail("Exception: " + ex);
}
}
@Test
public void Given_AudioFormatObject_When_NotNull_Then_ReturnsTargetDataLine() {
soundRecorder.setFormat(af);
Assertions.assertDoesNotThrow(() -> soundRecorder.getTargetDataLineForRecord());
}
@Test
public void Given_TargetLineDataObject_When_Run_Then_GeneratesOutputStream() {
soundRecorder.setFormat(af);
ByteArrayOutputStream out = new ByteArrayOutputStream();
TargetDataLine tLine = soundRecorder.getTargetDataLineForRecord();
int frameSizeInBytes = af.getFrameSize();
int bufferLengthInFrames = tLine.getBufferSize() / 8;
final int bufferLengthInBytes = bufferLengthInFrames * frameSizeInBytes;
Assertions.assertDoesNotThrow(
() -> soundRecorder.buildByteOutputStream(out, tLine, frameSizeInBytes, bufferLengthInBytes));
}
@Test
public void Given_AudioInputStream_When_NotNull_Then_SaveToWavFile() {
soundRecorder.setFormat(af);
soundRecorder.build(af);
try {
soundRecorder.start();
Thread.sleep(20000);
soundRecorder.stop();
WaveDataUtil wd = new WaveDataUtil();
Thread.sleep(3000);
boolean saveFile = wd.saveToFile("/SoundClip", AudioFileFormat.Type.WAVE,
soundRecorder.getAudioInputStream());
assertEquals(saveFile, true);
} catch (InterruptedException ex) {
fail("Exception: " + ex);
}
}
}