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<A NAME="open(javax.sound.sampled.AudioFormat, int)"><!-- --></A><H3>
open</H3>
<PRE>
public void <B>open</B>(<A HREF="../../../javax/sound/sampled/AudioFormat.html">AudioFormat</A>&nbsp;format,
                 int&nbsp;bufferSize)
          throws <A HREF="../../../javax/sound/sampled/LineUnavailableException.html">LineUnavailableException</A></PRE>
<DL>
<DD>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><A HREF="../../../javax/sound/sampled/DataLine.html#getBufferSize()"><CODE>DataLine.getBufferSize()</CODE></A></code>.  
 <p>
 If this operation succeeds, the line is marked as open, and an 
 <code><A HREF="../../../javax/sound/sampled/LineEvent.Type.html#OPEN"><CODE>OPEN</CODE></A></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>.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>format</CODE> - the desired audio format<DD><CODE>bufferSize</CODE> - the desired buffer size<DT><B>Throws:</B><DD><CODE><A HREF="../../../javax/sound/sampled/LineUnavailableException.html">LineUnavailableException</A></CODE> - if the line cannot be
 opened due to resource restrictions<DD><CODE><A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A></CODE> - if the buffer size does not represent 
 an integral number of sample frames<DD><CODE><A HREF="../../../java/lang/IllegalStateException.html">IllegalStateException</A></CODE> - if the line is already open<DD><CODE><A HREF="../../../java/lang/SecurityException.html">SecurityException</A></CODE> - if the line cannot be
 opened due to security restrictions<DT><B>See Also: </B><DD><A HREF="../../../javax/sound/sampled/SourceDataLine.html#open(javax.sound.sampled.AudioFormat)"><CODE>open(AudioFormat)</CODE></A>, 
<A HREF="../../../javax/sound/sampled/Line.html#open()"><CODE>Line.open()</CODE></A>, 
<A HREF="../../../javax/sound/sampled/Line.html#close()"><CODE>Line.close()</CODE></A>, 
<A HREF="../../../javax/sound/sampled/Line.html#isOpen()"><CODE>Line.isOpen()</CODE></A>, 
<A HREF="../../../javax/sound/sampled/LineEvent.html"><CODE>LineEvent</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="open(javax.sound.sampled.AudioFormat)"><!-- --></A><H3>
open</H3>
<PRE>
public void <B>open</B>(<A HREF="../../../javax/sound/sampled/AudioFormat.html">AudioFormat</A>&nbsp;format)
          throws <A HREF="../../../javax/sound/sampled/LineUnavailableException.html">LineUnavailableException</A></PRE>
<DL>
<DD>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><A HREF="../../../javax/sound/sampled/DataLine.html#getBufferSize()"><CODE>DataLine.getBufferSize()</CODE></A></code>.
 <p>
 If this operation succeeds, the line is marked as open, and an 
 <code><A HREF="../../../javax/sound/sampled/LineEvent.Type.html#OPEN"><CODE>OPEN</CODE></A></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>.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>format</CODE> - the desired audio format<DT><B>Throws:</B><DD><CODE><A HREF="../../../javax/sound/sampled/LineUnavailableException.html">LineUnavailableException</A></CODE> - if the line cannot be
 opened due to resource restrictions<DD><CODE><A HREF="../../../java/lang/IllegalStateException.html">IllegalStateException</A></CODE> - if the line is already open<DD><CODE><A HREF="../../../java/lang/SecurityException.html">SecurityException</A></CODE> - if the line cannot be
 opened due to security restrictions<DT><B>See Also: </B><DD><A HREF="../../../javax/sound/sampled/SourceDataLine.html#open(javax.sound.sampled.AudioFormat, int)"><CODE>open(AudioFormat, int)</CODE></A>, 
<A HREF="../../../javax/sound/sampled/Line.html#open()"><CODE>Line.open()</CODE></A>, 
<A HREF="../../../javax/sound/sampled/Line.html#close()"><CODE>Line.close()</CODE></A>, 
<A HREF="../../../javax/sound/sampled/Line.html#isOpen()"><CODE>Line.isOpen()</CODE></A>, 
<A HREF="../../../javax/sound/sampled/LineEvent.html"><CODE>LineEvent</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="write(byte[], int, int)"><!-- --></A><H3>
write</H3>
<PRE>
public int <B>write</B>(byte[]&nbsp;b,
                 int&nbsp;off,
                 int&nbsp;len)</PRE>
<DL>
<DD>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><A HREF="../../../javax/sound/sampled/DataLine.html#available()"><CODE>available</CODE></A></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><A HREF="../../../javax/sound/sampled/DataLine.html#available()"><CODE>available</CODE></A></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>.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>b</CODE> - a byte array containing data to be written to the data line<DD><CODE>len</CODE> - the length, in bytes, of the valid data in the array 
 (in other words, the requested amount of data to write, in bytes)<DT><B>Returns:</B><DD>the number of bytes actually written<DT><B>Throws:</B><DD><CODE><A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A></CODE> - if the requested number of bytes does
 not represent an integral number of sample frames.<DT><B>See Also: </B><DD><A HREF="../../../javax/sound/sampled/TargetDataLine.html#read(byte[], int, int)"><CODE>TargetDataLine.read(byte[], int, int)</CODE></A>, 
<A HREF="../../../javax/sound/sampled/DataLine.html#available()"><CODE>DataLine.available()</CODE></A></DL>
</DD>
</DL>
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