AbstractAudio.java 文件源码

@Override
public void setVolume(float volume) {

    FloatControl control = (FloatControl)this.controls.get("Master Gain");
    float min = control.getMinimum();
    float max = control.getMaximum();
    float oldVal = control.getValue();
    float newVal = volume < min ? min : (volume > max ? max : volume);
    control.setValue(newVal);
    this.trigger(AudioEvent.Type.VOLUME_CHANGED, oldVal, newVal);
}