/*
* echo() crea 3 audiotrack cloni di quelle "principali"
* e ci applica un effetto creato con la classe EnvironmentalReverb
* Due thread (timer1 e timer2) gestiscono l'avvio posticipato e l'interruzione dell'effetto
*/
synchronized void echo() {
if (isPlaying == true) {
showToast("Echo on");
if (echo != null) {
echo.release();
}
// Creo effetto audio per le tracce ritardate che vado a sovrapporre
echo = new EnvironmentalReverb(1, 0);
echo.setDecayHFRatio((short) 1000);
echo.setDecayTime(2000);
echo.setDensity((short) 500);
echo.setDiffusion((short) 700);
echo.setReflectionsLevel((short) 1000);
echo.setReverbLevel((short) 2000);
echo.setReflectionsDelay(100);
echo.setRoomLevel((short) -10);
echo.setEnabled(true);
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
final int echotime = 1000 + preferences.getInt("recho", 10);
final float iecho = preferences.getInt("iecho", 10) / 10;
timer1 =
new Thread() {
@Override
public void run() {
try {
audioXe = playSound(genArrayX);
audioYe = playSound(genArrayY);
audioZe = playSound(genArrayZ);
audioXe.setPlaybackHeadPosition(audioX.getPlaybackHeadPosition());
audioYe.setPlaybackHeadPosition(audioY.getPlaybackHeadPosition());
audioZe.setPlaybackHeadPosition(audioZ.getPlaybackHeadPosition());
audioXe.attachAuxEffect(echo.getId());
audioXe.setAuxEffectSendLevel(iecho);
audioYe.attachAuxEffect(echo.getId());
audioYe.setAuxEffectSendLevel(iecho);
audioZe.attachAuxEffect(echo.getId());
audioZe.setAuxEffectSendLevel(iecho);
audioXe.play();
audioYe.play();
audioZe.play();
audioXe.pause();
audioYe.pause();
audioZe.pause();
sleep(500); // Tempo in millisecondi di ritardo delle tracce
// per creare l'effetto echo
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
audioXe.play(); // Trascorso il tempo mando le tracce in riproduzi
audioYe.play(); // (sovrapposte alle tracce audio "principali")
audioZe.play();
timer1.interrupt();
}
super.run();
}
};
timer1.start();
timer2 =
new Thread() {
@Override
public void run() {
try {
sleep(
echotime); // Tempo in millisecondi a cui fermare l'echo (settabile tramite
// seekbar)
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
if (audioXe.getState() == AudioTrack.STATE_INITIALIZED
&& audioYe.getState() == AudioTrack.STATE_INITIALIZED
&& audioZe.getState() == AudioTrack.STATE_INITIALIZED) {
audioXe.stop();
audioYe.stop();
audioZe.stop();
audioXe.release();
audioYe.release();
audioZe.release();
echo.release();
timer2.interrupt();
}
}
super.run();
}
};
timer2.start();
}
}
