Example usage for javax.sound.sampled Mixer getMixerInfo

Introduction

In this page you can find the example usage for javax.sound.sampled Mixer getMixerInfo.

Prototype

Info getMixerInfo();

Source Link

Document

Obtains information about this mixer, including the product's name, version, vendor, etc.

Usage

From source file:BasicPlayer.java

/**
 * Inits a DateLine.<br>/*from w  w  w .ja  v  a 2  s . c o m*/
 *
 * We check if the line supports Gain and Pan controls.
 *
 * From the AudioInputStream, i.e. from the sound file, we
 * fetch information about the format of the audio data. These
 * information include the sampling frequency, the number of
 * channels and the size of the samples. There information
 * are needed to ask JavaSound for a suitable output line
 * for this audio file.
 * Furthermore, we have to give JavaSound a hint about how
 * big the internal buffer for the line should be. Here,
 * we say AudioSystem.NOT_SPECIFIED, signaling that we don't
 * care about the exact size. JavaSound will use some default
 * value for the buffer size.
 */
protected void createLine() throws LineUnavailableException {
    log.info("Create Line");
    if (m_line == null) {
        AudioFormat sourceFormat = m_audioInputStream.getFormat();
        log.info("Create Line : Source format : " + sourceFormat.toString());
        int nSampleSizeInBits = sourceFormat.getSampleSizeInBits();
        if (nSampleSizeInBits <= 0)
            nSampleSizeInBits = 16;
        if ((sourceFormat.getEncoding() == AudioFormat.Encoding.ULAW)
                || (sourceFormat.getEncoding() == AudioFormat.Encoding.ALAW))
            nSampleSizeInBits = 16;
        if (nSampleSizeInBits != 8)
            nSampleSizeInBits = 16;
        AudioFormat targetFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED,
                sourceFormat.getSampleRate(), nSampleSizeInBits, sourceFormat.getChannels(),
                sourceFormat.getChannels() * (nSampleSizeInBits / 8), sourceFormat.getSampleRate(), false);
        log.info("Create Line : Target format: " + targetFormat);
        // Keep a reference on encoded stream to progress notification.
        m_encodedaudioInputStream = m_audioInputStream;
        try {
            // Get total length in bytes of the encoded stream.
            encodedLength = m_encodedaudioInputStream.available();
        } catch (IOException e) {
            log.error("Cannot get m_encodedaudioInputStream.available()", e);
        }
        // Create decoded stream.
        m_audioInputStream = AudioSystem.getAudioInputStream(targetFormat, m_audioInputStream);
        AudioFormat audioFormat = m_audioInputStream.getFormat();
        DataLine.Info info = new DataLine.Info(SourceDataLine.class, audioFormat, AudioSystem.NOT_SPECIFIED);
        Mixer mixer = getMixer(m_mixerName);
        if (mixer != null) {
            log.info("Mixer : " + mixer.getMixerInfo().toString());
            m_line = (SourceDataLine) mixer.getLine(info);
        } else {
            m_line = (SourceDataLine) AudioSystem.getLine(info);
            m_mixerName = null;
        }
        log.info("Line : " + m_line.toString());
        log.debug("Line Info : " + m_line.getLineInfo().toString());
        log.debug("Line AudioFormat: " + m_line.getFormat().toString());
    }
}

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