SingleSongPlayer.java 文件源码

private void init(AudioFormat baseFormat) throws LineUnavailableException {

        decodedFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, baseFormat.getSampleRate(), 16, baseFormat.getChannels(),
                baseFormat.getChannels() * 2, baseFormat.getSampleRate(), false);
        DataLine.Info info = new DataLine.Info(SourceDataLine.class, decodedFormat);
        line = (SourceDataLine) AudioSystem.getLine(info);
        line.open(decodedFormat);

        volumeControl = (FloatControl) line.getControl(FloatControl.Type.MASTER_GAIN);
        minGainDB = volumeControl.getMinimum();
        ampGainDB = ((10.0f / 20.0f) * volumeControl.getMaximum()) - volumeControl.getMinimum();
        cste = Math.log(10.0) / 20;

        line.start();

        //App.logger.d("prefix + WebPlayer SourceDataLine started!", null);
    }