Java javax sound sampled lineunavailableexception

Воспроизведение звука в Java

Нормальной русскоязычной информации по теме просто нет. Java-tutorials тоже оставляют желать лучшего. А архитектура javax.sound.sampled хоть и проста, но далеко не тривиальна. Поэтому свой первый пост на Хабре я решил посвятить именно этой теме. Приступим:

Воспроизведение звука

try < File soundFile = new File("snd.wav"); //Звуковой файл //Получаем AudioInputStream //Вот тут могут полететь IOException и UnsupportedAudioFileException AudioInputStream ais = AudioSystem.getAudioInputStream(soundFile); //Получаем реализацию интерфейса Clip //Может выкинуть LineUnavailableException Clip clip = AudioSystem.getClip(); //Загружаем наш звуковой поток в Clip //Может выкинуть IOException и LineUnavailableException clip.open(ais); clip.setFramePosition(0); //устанавливаем указатель на старт clip.start(); //Поехали. //Если не запущено других потоков, то стоит подождать, пока клип не закончится //В GUI-приложениях следующие 3 строчки не понадобятся Thread.sleep(clip.getMicrosecondLength()/1000); clip.stop(); //Останавливаем clip.close(); //Закрываем >catch (IOException | UnsupportedAudioFileException | LineUnavailableException exc) < exc.printStackTrace(); >catch (InterruptedException exc) <> 

Регулятор громкости

Поигравшись со звуками, вы наверняка захотите иметь возможность программно изменять громкость звука. Java Sound API предоставляет такую возможность с фирменной кривотой.

//Получаем контроллер громкости FloatControl vc = (FloatControl) clip.getControl(FloatControl.Type.MASTER_GAIN); //Устанавливаем значение //Оно должно быть в пределах от vc.getMinimum() до vc.getMaximum() vc.setValue(5); //Громче обычного 

Этот код нужно поместить между строчками clip.open(ais) и clip.setFramePosition(0).

Упрощаем процесс

import java.io.File; import java.io.IOException; import javax.sound.sampled.AudioInputStream; import javax.sound.sampled.AudioSystem; import javax.sound.sampled.Clip; import javax.sound.sampled.FloatControl; import javax.sound.sampled.LineEvent; import javax.sound.sampled.LineListener; import javax.sound.sampled.LineUnavailableException; import javax.sound.sampled.UnsupportedAudioFileException; public class Sound implements AutoCloseable < private boolean released = false; private AudioInputStream stream = null; private Clip clip = null; private FloatControl volumeControl = null; private boolean playing = false; public Sound(File f) < try < stream = AudioSystem.getAudioInputStream(f); clip = AudioSystem.getClip(); clip.open(stream); clip.addLineListener(new Listener()); volumeControl = (FloatControl) clip.getControl(FloatControl.Type.MASTER_GAIN); released = true; >catch (IOException | UnsupportedAudioFileException | LineUnavailableException exc) < exc.printStackTrace(); released = false; close(); >> // true если звук успешно загружен, false если произошла ошибка public boolean isReleased() < return released; >// проигрывается ли звук в данный момент public boolean isPlaying() < return playing; >// Запуск /* breakOld определяет поведение, если звук уже играется Если breakOld==true, о звук будет прерван и запущен заново Иначе ничего не произойдёт */ public void play(boolean breakOld) < if (released) < if (breakOld) < clip.stop(); clip.setFramePosition(0); clip.start(); playing = true; >else if (!isPlaying()) < clip.setFramePosition(0); clip.start(); playing = true; >> > // То же самое, что и play(true) public void play() < play(true); >// Останавливает воспроизведение public void stop() < if (playing) < clip.stop(); >> public void close() < if (clip != null) clip.close(); if (stream != null) try < stream.close(); >catch (IOException exc) < exc.printStackTrace(); >> // Установка громкости /* x долже быть в пределах от 0 до 1 (от самого тихого к самому громкому) */ public void setVolume(float x) < if (x<0) x = 0; if (x>1) x = 1; float min = volumeControl.getMinimum(); float max = volumeControl.getMaximum(); volumeControl.setValue((max-min)*x+min); > // Возвращает текущую громкость (число от 0 до 1) public float getVolume() < float v = volumeControl.getValue(); float min = volumeControl.getMinimum(); float max = volumeControl.getMaximum(); return (v-min)/(max-min); >// Дожидается окончания проигрывания звука public void join() < if (!released) return; synchronized(clip) < try < while (playing) clip.wait(); >catch (InterruptedException exc) <> > > // Статический метод, для удобства public static Sound playSound(String path) < File f = new File(path); Sound snd = new Sound(f); snd.play(); return snd; >private class Listener implements LineListener < public void update(LineEvent ev) < if (ev.getType() == LineEvent.Type.STOP) < playing = false; synchronized(clip) < clip.notify(); >> > > > 

Пользоваться очень просто, например:

Sound.playSound("sounds/hello.wav").join(); 

Форматы

Пару слов о поддержке форматов звуковых файлов: забудьте про mp3 и вспомните wav. Также поддерживаются au и aif.

Источник

Java javax sound sampled lineunavailableexception

Obtains a clip from the specified mixer that can be used for playing back an audio file or an audio stream.

Obtains a line that is available for use and that matches the description in the specified Line.Info object.

Obtains a source data line that can be used for playing back audio data in the format specified by the AudioFormat object.

Obtains a source data line that can be used for playing back audio data in the format specified by the AudioFormat object, provided by the mixer specified by the Mixer.Info object.

Obtains a target data line that can be used for recording audio data in the format specified by the AudioFormat object.

Obtains a target data line that can be used for recording audio data in the format specified by the AudioFormat object, provided by the mixer specified by the Mixer.Info object.

Opens the line, indicating that it should acquire any required system resources and become operational.

Opens the line with the specified format, causing the line to acquire any required system resources and become operational.

Opens the line with the specified format and suggested buffer size, causing the line to acquire any required system resources and become operational.

Opens the line with the specified format, causing the line to acquire any required system resources and become operational.

Opens the line with the specified format and requested buffer size, causing the line to acquire any required system resources and become operational.

Report a bug or suggest an enhancement
For further API reference and developer documentation see the Java SE Documentation, which contains more detailed, developer-targeted descriptions with conceptual overviews, definitions of terms, workarounds, and working code examples.
Java is a trademark or registered trademark of Oracle and/or its affiliates in the US and other countries.
Copyright © 1993, 2023, Oracle and/or its affiliates, 500 Oracle Parkway, Redwood Shores, CA 94065 USA.
All rights reserved. Use is subject to license terms and the documentation redistribution policy.

Источник

Uses of Class
javax.sound.sampled.LineUnavailableException

Uses of LineUnavailableException in javax.sound.sampled

Obtains a clip from the specified mixer that can be used for playing back an audio file or an audio stream.

Obtains a line that is available for use and that matches the description in the specified Line.Info object.

Obtains a source data line that can be used for playing back audio data in the format specified by the AudioFormat object.

Obtains a source data line that can be used for playing back audio data in the format specified by the AudioFormat object, provided by the mixer specified by the Mixer.Info object.

Obtains a target data line that can be used for recording audio data in the format specified by the AudioFormat object.

Obtains a target data line that can be used for recording audio data in the format specified by the AudioFormat object, provided by the mixer specified by the Mixer.Info object.

Opens the line, indicating that it should acquire any required system resources and become operational.

Opens the line with the specified format, causing the line to acquire any required system resources and become operational.

Opens the line with the specified format and suggested buffer size, causing the line to acquire any required system resources and become operational.

Opens the line with the specified format, causing the line to acquire any required system resources and become operational.

Opens the line with the specified format and requested buffer size, causing the line to acquire any required system resources and become operational.

Report a bug or suggest an enhancement
For further API reference and developer documentation see the Java SE Documentation, which contains more detailed, developer-targeted descriptions with conceptual overviews, definitions of terms, workarounds, and working code examples. Other versions.
Java is a trademark or registered trademark of Oracle and/or its affiliates in the US and other countries.
Copyright © 1993, 2023, Oracle and/or its affiliates, 500 Oracle Parkway, Redwood Shores, CA 94065 USA.
All rights reserved. Use is subject to license terms and the documentation redistribution policy.

Источник

Java javax sound sampled lineunavailableexception

Obtains a clip from the specified mixer that can be used for playing back an audio file or an audio stream.

Obtains a line that is available for use and that matches the description in the specified Line.Info object.

Obtains a source data line that can be used for playing back audio data in the format specified by the AudioFormat object.

Obtains a source data line that can be used for playing back audio data in the format specified by the AudioFormat object, provided by the mixer specified by the Mixer.Info object.

Obtains a target data line that can be used for recording audio data in the format specified by the AudioFormat object.

Obtains a target data line that can be used for recording audio data in the format specified by the AudioFormat object, provided by the mixer specified by the Mixer.Info object.

Opens the line, indicating that it should acquire any required system resources and become operational.

Opens the line with the specified format, causing the line to acquire any required system resources and become operational.

Opens the line with the specified format, causing the line to acquire any required system resources and become operational.

Opens the line with the specified format and suggested buffer size, causing the line to acquire any required system resources and become operational.

Opens the line with the specified format and requested buffer size, causing the line to acquire any required system resources and become operational.

Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2023, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.

Источник

Uses of Class
javax.sound.sampled.LineUnavailableException

Uses of LineUnavailableException in javax.sound.sampled

Obtains a clip from the specified mixer that can be used for playing back an audio file or an audio stream.

Obtains a line that is available for use and that matches the description in the specified Line.Info object.

Obtains a source data line that can be used for playing back audio data in the format specified by the AudioFormat object.

Obtains a source data line that can be used for playing back audio data in the format specified by the AudioFormat object, provided by the mixer specified by the Mixer.Info object.

Obtains a target data line that can be used for recording audio data in the format specified by the AudioFormat object.

Obtains a target data line that can be used for recording audio data in the format specified by the AudioFormat object, provided by the mixer specified by the Mixer.Info object.

Opens the line, indicating that it should acquire any required system resources and become operational.

Opens the line with the specified format, causing the line to acquire any required system resources and become operational.

Opens the line with the specified format and suggested buffer size, causing the line to acquire any required system resources and become operational.

Opens the line with the specified format, causing the line to acquire any required system resources and become operational.

Opens the line with the specified format and requested buffer size, causing the line to acquire any required system resources and become operational.

Report a bug or suggest an enhancement
For further API reference and developer documentation see the Java SE Documentation, which contains more detailed, developer-targeted descriptions with conceptual overviews, definitions of terms, workarounds, and working code examples. Other versions.
Java is a trademark or registered trademark of Oracle and/or its affiliates in the US and other countries.
Copyright © 1993, 2023, Oracle and/or its affiliates, 500 Oracle Parkway, Redwood Shores, CA 94065 USA.
All rights reserved. Use is subject to license terms and the documentation redistribution policy.

Источник