Control C Control V: 6월 2024

2024년 6월 30일 일요일

드디어 월드 스타 진입 ~ (뿌요뿌요 테트리스 2 줄여서 뿌테2)

하이라이트 : 20:27

2024년 6월 21일 금요일

자바로 사운드, 음악 파일 (wav) 재생 Play sound or music file (wav) with java codes

대뜸 예제 첨부

일단 아래와 같은 클래스를 만들어 둔다.

import java.io.File;
import java.io.Serializable;
import java.net.MalformedURLException;
import java.net.URL;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.FloatControl;
import javax.sound.sampled.Mixer;
import javax.sound.sampled.SourceDataLine;
/** Class to play wav file */
public class SoundClip implements Serializable
{
private static final long serialVersionUID = -4189707921602251694L;
protected URL url;
protected double volume = 100.0;
protected transient boolean flagStop = false;
/** Create instance with URL to get wav file */
public SoundClip(URL url)
{
   this.url = url;
}
/** Create instance with wav file */
public SoundClip(File f) throws MalformedURLException
{
   this(f.toURI().toURL());
}
/** Play wav sound now */
public void start()
{
   if(url == null) return;
   flagStop = false;
   AudioInputStream inp1 = null;
   AudioInputStream inp2 = null;
   SourceDataLine line = null;
   try
   {
   byte[] buffer = new byte[4096];
   int reads;

   // Load wav from URL
   inp1 = AudioSystem.getAudioInputStream(url);

   if(flagStop) return; // Return when stop() method called

   // Detect audio format of wav file and get converted input stream
   AudioFormat formatBase = inp1.getFormat();
   AudioFormat format = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, formatBase.getSampleRate(), 16, formatBase.getChannels(), formatBase.getChannels() * 2, formatBase.getSampleRate(), false);
   inp2 = AudioSystem.getAudioInputStream(format, inp1);

   if(flagStop) return; // Return when stop() method called

   // Create SourceDataLine to play wav
   DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
   Mixer mixer = AudioSystem.getMixer(null);
   line = (SourceDataLine) mixer.getLine(info);

   if(flagStop) return; // Return when stop() method called

   // Open SourceDataLine
   line.open(format);

   // This must be in here (after line opened !)
   FloatControl ctrl = (FloatControl) line.getControl(FloatControl.Type.MASTER_GAIN);
ctrl.setValue((float) (20.0f * Math.log10(volume / 100.0)));

// Play Start
   line.start();

   while(! flagStop)
   {
   reads = inp2.read(buffer, 0, buffer.length);
   if(reads < 0) break; // Return when stop() method called
   line.write(buffer, 0, reads);
   }

   // END
   line.drain();
   line.stop();
   }
   catch(Exception ex)
   {
   ex.printStackTrace();
   }
   finally
   {
   try { line.close(); } catch(Exception ex) {}
   try { inp2.close(); } catch(Exception ex) {}
   try { inp1.close(); } catch(Exception ex) {}
   flagStop = false;
   }
}
/** Play wav sound now */
public void play()
{
   start();
}
/** Stop playing */
public void stop()
{
   flagStop = true;
}
/** Get volume (0 ~ 100) default 100 */
public double getVolume()
{
return volume;
}
/** Set volume (0 ~ 100) default 100 */
public void setVolume(double volume)
{
this.volume = volume;
if(this.volume < 0) this.volume = 0;
}
/** Get URL of wav file */
public URL getUrl() {
return url;
}
/** Set wav file */
public void setUrl(URL url) {
  this.url = url;
}
}