File	Doc	Category	Size	Date	Package
DirectAudioRenderer.java	API Doc	JMF 2.1.1e	8868	Mon May 12 12:21:24 BST 2003	com.sun.media.renderer.audio

DirectAudioRenderer

• java.lang.Object
  • com.sun.media.BasicPlugIn
    • com.sun.media.renderer.audio.AudioRenderer

Fields Summary
static String	NAME
private boolean	osCanMix
static boolean	loaded
private int	nativeData

Constructors Summary

public DirectAudioRenderer() super(); // // This line advertizes all the formats that are supported // by this renderer. // Here we assume the renderer can support all linear/PCM formats. // supportedFormats = new Format[] { new AudioFormat( AudioFormat.LINEAR, 44100, // Sample rate AudioFormat.NOT_SPECIFIED, // Sample size AudioFormat.NOT_SPECIFIED, // # of channels AudioFormat.BIG_ENDIAN, AudioFormat.SIGNED ), new AudioFormat( AudioFormat.LINEAR, 22050, // Sample rate AudioFormat.NOT_SPECIFIED, // Sample size AudioFormat.NOT_SPECIFIED, // # of channels AudioFormat.BIG_ENDIAN, AudioFormat.SIGNED ), new AudioFormat( AudioFormat.LINEAR, 11025, // Sample rate AudioFormat.NOT_SPECIFIED, // Sample size AudioFormat.NOT_SPECIFIED, // # of channels AudioFormat.BIG_ENDIAN, AudioFormat.SIGNED ), new AudioFormat( AudioFormat.LINEAR, 8000, // Sample rate AudioFormat.NOT_SPECIFIED, // Sample size AudioFormat.NOT_SPECIFIED, // # of channels AudioFormat.BIG_ENDIAN, AudioFormat.SIGNED ), }; gainControl = new MCA(this); osCanMix = nCanMix();

Methods Summary
public synchronized void	close() Close the renderer and the device. super.close();
protected com.sun.media.renderer.audio.device.AudioOutput	createDevice(javax.media.format.AudioFormat format) Create the device - DirectAudioOutput. return (new DirectAudioOutput());
public void	flush() device.flush();
public java.lang.String	getName() return NAME;
private static synchronized boolean	grabDevice() Grab the audio device without opening it. // If the device can be claimed without being opened, // then fill in this method. return true;
public boolean	isExclusive() return !osCanMix;
private native int	nBufferAvailable()
private native boolean	nCanMix()
private native void	nClose()
private native void	nDrain()
private native void	nFlush()
private native long	nGetSamplesPlayed()
private native boolean	nOpen(int rate, int sizeInBits, int channels, int bufSize) native method declaraions
private native void	nPause()
private native void	nResume()
private native void	nSetGain(float g)
private native void	nSetMute(boolean m)
private native int	nWrite(byte[] data, int off, int len)
public synchronized void	open() if (device == null && inputFormat != null) { if (!initDevice(inputFormat)) throw new ResourceUnavailableException("Cannot intialize audio device for playback"); }
public float	setRate(float factor) Set the rate of the renderer. // Assume the rate cannot be changed for this renderer. return super.setRate(1.0f);