package org.intellimate.izou.system.sound;
import org.intellimate.izou.addon.AddOnModel;
import org.intellimate.izou.main.Main;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.SourceDataLine;
/**
* the delegation to SourceDataLine.
* @author LeanderK
* @version 1.0
*/
public class IzouSoundSourceDataLine extends IzouSoundDataLine implements SourceDataLine {
private final SourceDataLine sourceDataLine;
public IzouSoundSourceDataLine(SourceDataLine dataLine, Main main, boolean isPermanent, AddOnModel addOnModel) {
super(dataLine, main, isPermanent, addOnModel);
this.sourceDataLine = dataLine;
}
/**
* Opens the line with the specified format and suggested buffer size,
* causing the line to acquire any required
* system resources and become operational.
* <p>
* The buffer size is specified in bytes, but must represent an integral
* number of sample frames. Invoking this method with a requested buffer
* size that does not meet this requirement may result in an
* IllegalArgumentException. The actual buffer size for the open line may
* differ from the requested buffer size. The value actually set may be
* queried by subsequently calling <code>DataLine#getBufferSize</code>.
* <p>
* If this operation succeeds, the line is marked as open, and an
* <code>LineEvent.Type#OPEN OPEN</code> event is dispatched to the
* line's listeners.
* <p>
* Invoking this method on a line which is already open is illegal
* and may result in an <code>IllegalStateException</code>.
* <p>
* Note that some lines, once closed, cannot be reopened. Attempts
* to reopen such a line will always result in a
* <code>LineUnavailableException</code>.
*
* @param format the desired audio format
* @param bufferSize the desired buffer size
* @throws LineUnavailableException if the line cannot be
* opened due to resource restrictions
* @throws IllegalArgumentException if the buffer size does not represent
* an integral number of sample frames,
* or if <code>format</code> is not fully specified or invalid
* @throws IllegalStateException if the line is already open
* @throws SecurityException if the line cannot be
* opened due to security restrictions
*
* @see #open(AudioFormat)
*/
@Override
public void open(AudioFormat format, int bufferSize) throws LineUnavailableException {
opening();
sourceDataLine.open(format, bufferSize);
}
/**
* Opens the line with the specified format, causing the line to acquire any
* required system resources and become operational.
*
* <p>
* The implementation chooses a buffer size, which is measured in bytes but
* which encompasses an integral number of sample frames. The buffer size
* that the system has chosen may be queried by subsequently calling
* <code>DataLine#getBufferSize</code>.
* <p>
* If this operation succeeds, the line is marked as open, and an
* <code>LineEvent.Type#OPEN OPEN</code> event is dispatched to the
* line's listeners.
* <p>
* Invoking this method on a line which is already open is illegal
* and may result in an <code>IllegalStateException</code>.
* <p>
* Note that some lines, once closed, cannot be reopened. Attempts
* to reopen such a line will always result in a
* <code>LineUnavailableException</code>.
*
* @param format the desired audio format
* @throws LineUnavailableException if the line cannot be
* opened due to resource restrictions
* @throws IllegalArgumentException if <code>format</code>
* is not fully specified or invalid
* @throws IllegalStateException if the line is already open
* @throws SecurityException if the line cannot be
* opened due to security restrictions
*
* @see #open(AudioFormat, int)
*/
@Override
public void open(AudioFormat format) throws LineUnavailableException {
opening();
sourceDataLine.open(format);
}
/**
* Writes audio data to the mixer via this source data line. The requested
* number of bytes of data are read from the specified array,
* starting at the given offset into the array, and written to the data
* line's buffer. If the caller attempts to write more data than can
* currently be written (see <code>DataLine#available available</code>),
* this method blocks until the requested amount of data has been written.
* This applies even if the requested amount of data to write is greater
* than the data line's buffer size. However, if the data line is closed,
* stopped, or flushed before the requested amount has been written,
* the method no longer blocks, but returns the number of bytes
* written thus far.
* <p>
* The number of bytes that can be written without blocking can be ascertained
* using the <code>DataLine#available available</code> method of the
* <code>DataLine</code> interface. (While it is guaranteed that
* this number of bytes can be written without blocking, there is no guarantee
* that attempts to write additional data will block.)
* <p>
* The number of bytes to write must represent an integral number of
* sample frames, such that:
* <br>
* <center><code>[ bytes written ] % [frame size in bytes ] == 0</code></center>
* <br>
* The return value will always meet this requirement. A request to write a
* number of bytes representing a non-integral number of sample frames cannot
* be fulfilled and may result in an <code>IllegalArgumentException</code>.
*
* @param b a byte array containing data to be written to the data line
* @param off the offset from the beginning of the array, in bytes
* @param len the length, in bytes, of the valid data in the array
* (in other words, the requested amount of data to write, in bytes)
* @return the number of bytes actually written
* @throws IllegalArgumentException if the requested number of bytes does
* not represent an integral number of sample frames,
* or if <code>len</code> is negative
* @throws ArrayIndexOutOfBoundsException if <code>off</code> is negative,
* or <code>off+len</code> is greater than the length of the array
* <code>b</code>.
*/
@Override
public int write(byte[] b, int off, int len) {
if (isMutable) {
return sourceDataLine.write(b, off, len);
} else {
if (isMutedFromSystem) {
byte[] newArr = new byte[b.length];
return sourceDataLine.write(newArr, off, len);
} else {
return sourceDataLine.write(b, off, len);
}
}
}
}