2
|
1 |
/*
|
|
2 |
* Copyright 1999-2004 Sun Microsystems, Inc. All Rights Reserved.
|
|
3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
4 |
*
|
|
5 |
* This code is free software; you can redistribute it and/or modify it
|
|
6 |
* under the terms of the GNU General Public License version 2 only, as
|
|
7 |
* published by the Free Software Foundation. Sun designates this
|
|
8 |
* particular file as subject to the "Classpath" exception as provided
|
|
9 |
* by Sun in the LICENSE file that accompanied this code.
|
|
10 |
*
|
|
11 |
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
12 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
13 |
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
14 |
* version 2 for more details (a copy is included in the LICENSE file that
|
|
15 |
* accompanied this code).
|
|
16 |
*
|
|
17 |
* You should have received a copy of the GNU General Public License version
|
|
18 |
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
19 |
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
20 |
*
|
|
21 |
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
22 |
* CA 95054 USA or visit www.sun.com if you need additional information or
|
|
23 |
* have any questions.
|
|
24 |
*/
|
|
25 |
|
|
26 |
package javax.sound.sampled;
|
|
27 |
|
|
28 |
/**
|
|
29 |
* <code>DataLine</code> adds media-related functionality to its
|
|
30 |
* superinterface, <code>{@link Line}</code>. This functionality includes
|
|
31 |
* transport-control methods that start, stop, drain, and flush
|
|
32 |
* the audio data that passes through the line. A data line can also
|
|
33 |
* report the current position, volume, and audio format of the media.
|
|
34 |
* Data lines are used for output of audio by means of the
|
|
35 |
* subinterfaces <code>{@link SourceDataLine}</code> or
|
|
36 |
* <code>{@link Clip}</code>, which allow an application program to write data. Similarly,
|
|
37 |
* audio input is handled by the subinterface <code>{@link TargetDataLine}</code>,
|
|
38 |
* which allows data to be read.
|
|
39 |
* <p>
|
|
40 |
* A data line has an internal buffer in which
|
|
41 |
* the incoming or outgoing audio data is queued. The
|
|
42 |
* <code>{@link #drain()}</code> method blocks until this internal buffer
|
|
43 |
* becomes empty, usually because all queued data has been processed. The
|
|
44 |
* <code>{@link #flush()}</code> method discards any available queued data
|
|
45 |
* from the internal buffer.
|
|
46 |
* <p>
|
|
47 |
* A data line produces <code>{@link LineEvent.Type#START START}</code> and
|
|
48 |
* <code>{@link LineEvent.Type#STOP STOP}</code> events whenever
|
|
49 |
* it begins or ceases active presentation or capture of data. These events
|
|
50 |
* can be generated in response to specific requests, or as a result of
|
|
51 |
* less direct state changes. For example, if <code>{@link #start()}</code> is called
|
|
52 |
* on an inactive data line, and data is available for capture or playback, a
|
|
53 |
* <code>START</code> event will be generated shortly, when data playback
|
|
54 |
* or capture actually begins. Or, if the flow of data to an active data
|
|
55 |
* line is constricted so that a gap occurs in the presentation of data,
|
|
56 |
* a <code>STOP</code> event is generated.
|
|
57 |
* <p>
|
|
58 |
* Mixers often support synchronized control of multiple data lines.
|
|
59 |
* Synchronization can be established through the Mixer interface's
|
|
60 |
* <code>{@link Mixer#synchronize synchronize}</code> method.
|
|
61 |
* See the description of the <code>{@link Mixer Mixer}</code> interface
|
|
62 |
* for a more complete description.
|
|
63 |
*
|
|
64 |
* @author Kara Kytle
|
|
65 |
* @see LineEvent
|
|
66 |
* @since 1.3
|
|
67 |
*/
|
|
68 |
public interface DataLine extends Line {
|
|
69 |
|
|
70 |
|
|
71 |
/**
|
|
72 |
* Drains queued data from the line by continuing data I/O until the
|
|
73 |
* data line's internal buffer has been emptied.
|
|
74 |
* This method blocks until the draining is complete. Because this is a
|
|
75 |
* blocking method, it should be used with care. If <code>drain()</code>
|
|
76 |
* is invoked on a stopped line that has data in its queue, the method will
|
|
77 |
* block until the line is running and the data queue becomes empty. If
|
|
78 |
* <code>drain()</code> is invoked by one thread, and another continues to
|
|
79 |
* fill the data queue, the operation will not complete.
|
|
80 |
* This method always returns when the data line is closed.
|
|
81 |
*
|
|
82 |
* @see #flush()
|
|
83 |
*/
|
|
84 |
public void drain();
|
|
85 |
|
|
86 |
/**
|
|
87 |
* Flushes queued data from the line. The flushed data is discarded.
|
|
88 |
* In some cases, not all queued data can be discarded. For example, a
|
|
89 |
* mixer can flush data from the buffer for a specific input line, but any
|
|
90 |
* unplayed data already in the output buffer (the result of the mix) will
|
|
91 |
* still be played. You can invoke this method after pausing a line (the
|
|
92 |
* normal case) if you want to skip the "stale" data when you restart
|
|
93 |
* playback or capture. (It is legal to flush a line that is not stopped,
|
|
94 |
* but doing so on an active line is likely to cause a discontinuity in the
|
|
95 |
* data, resulting in a perceptible click.)
|
|
96 |
*
|
|
97 |
* @see #stop()
|
|
98 |
* @see #drain()
|
|
99 |
*/
|
|
100 |
public void flush();
|
|
101 |
|
|
102 |
/**
|
|
103 |
* Allows a line to engage in data I/O. If invoked on a line
|
|
104 |
* that is already running, this method does nothing. Unless the data in
|
|
105 |
* the buffer has been flushed, the line resumes I/O starting
|
|
106 |
* with the first frame that was unprocessed at the time the line was
|
|
107 |
* stopped. When audio capture or playback starts, a
|
|
108 |
* <code>{@link LineEvent.Type#START START}</code> event is generated.
|
|
109 |
*
|
|
110 |
* @see #stop()
|
|
111 |
* @see #isRunning()
|
|
112 |
* @see LineEvent
|
|
113 |
*/
|
|
114 |
public void start();
|
|
115 |
|
|
116 |
/**
|
|
117 |
* Stops the line. A stopped line should cease I/O activity.
|
|
118 |
* If the line is open and running, however, it should retain the resources required
|
|
119 |
* to resume activity. A stopped line should retain any audio data in its buffer
|
|
120 |
* instead of discarding it, so that upon resumption the I/O can continue where it left off,
|
|
121 |
* if possible. (This doesn't guarantee that there will never be discontinuities beyond the
|
|
122 |
* current buffer, of course; if the stopped condition continues
|
|
123 |
* for too long, input or output samples might be dropped.) If desired, the retained data can be
|
|
124 |
* discarded by invoking the <code>flush</code> method.
|
|
125 |
* When audio capture or playback stops, a <code>{@link LineEvent.Type#STOP STOP}</code> event is generated.
|
|
126 |
*
|
|
127 |
* @see #start()
|
|
128 |
* @see #isRunning()
|
|
129 |
* @see #flush()
|
|
130 |
* @see LineEvent
|
|
131 |
*/
|
|
132 |
public void stop();
|
|
133 |
|
|
134 |
/**
|
|
135 |
* Indicates whether the line is running. The default is <code>false</code>.
|
|
136 |
* An open line begins running when the first data is presented in response to an
|
|
137 |
* invocation of the <code>start</code> method, and continues
|
|
138 |
* until presentation ceases in response to a call to <code>stop</code> or
|
|
139 |
* because playback completes.
|
|
140 |
* @return <code>true</code> if the line is running, otherwise <code>false</code>
|
|
141 |
* @see #start()
|
|
142 |
* @see #stop()
|
|
143 |
*/
|
|
144 |
public boolean isRunning();
|
|
145 |
|
|
146 |
/**
|
|
147 |
* Indicates whether the line is engaging in active I/O (such as playback
|
|
148 |
* or capture). When an inactive line becomes active, it sends a
|
|
149 |
* <code>{@link LineEvent.Type#START START}</code> event to its listeners. Similarly, when
|
|
150 |
* an active line becomes inactive, it sends a
|
|
151 |
* <code>{@link LineEvent.Type#STOP STOP}</code> event.
|
|
152 |
* @return <code>true</code> if the line is actively capturing or rendering
|
|
153 |
* sound, otherwise <code>false</code>
|
|
154 |
* @see #isOpen
|
|
155 |
* @see #addLineListener
|
|
156 |
* @see #removeLineListener
|
|
157 |
* @see LineEvent
|
|
158 |
* @see LineListener
|
|
159 |
*/
|
|
160 |
public boolean isActive();
|
|
161 |
|
|
162 |
/**
|
|
163 |
* Obtains the current format (encoding, sample rate, number of channels,
|
|
164 |
* etc.) of the data line's audio data.
|
|
165 |
*
|
|
166 |
* <p>If the line is not open and has never been opened, it returns
|
|
167 |
* the default format. The default format is an implementation
|
|
168 |
* specific audio format, or, if the <code>DataLine.Info</code>
|
|
169 |
* object, which was used to retrieve this <code>DataLine</code>,
|
|
170 |
* specifies at least one fully qualified audio format, the
|
|
171 |
* last one will be used as the default format. Opening the
|
|
172 |
* line with a specific audio format (e.g.
|
|
173 |
* {@link SourceDataLine#open(AudioFormat)}) will override the
|
|
174 |
* default format.
|
|
175 |
*
|
|
176 |
* @return current audio data format
|
|
177 |
* @see AudioFormat
|
|
178 |
*/
|
|
179 |
public AudioFormat getFormat();
|
|
180 |
|
|
181 |
/**
|
|
182 |
* Obtains the maximum number of bytes of data that will fit in the data line's
|
|
183 |
* internal buffer. For a source data line, this is the size of the buffer to
|
|
184 |
* which data can be written. For a target data line, it is the size of
|
|
185 |
* the buffer from which data can be read. Note that
|
|
186 |
* the units used are bytes, but will always correspond to an integral
|
|
187 |
* number of sample frames of audio data.
|
|
188 |
*
|
|
189 |
* @return the size of the buffer in bytes
|
|
190 |
*/
|
|
191 |
public int getBufferSize();
|
|
192 |
|
|
193 |
/**
|
|
194 |
* Obtains the number of bytes of data currently available to the
|
|
195 |
* application for processing in the data line's internal buffer. For a
|
|
196 |
* source data line, this is the amount of data that can be written to the
|
|
197 |
* buffer without blocking. For a target data line, this is the amount of data
|
|
198 |
* available to be read by the application. For a clip, this value is always
|
|
199 |
* 0 because the audio data is loaded into the buffer when the clip is opened,
|
|
200 |
* and persists without modification until the clip is closed.
|
|
201 |
* <p>
|
|
202 |
* Note that the units used are bytes, but will always
|
|
203 |
* correspond to an integral number of sample frames of audio data.
|
|
204 |
* <p>
|
|
205 |
* An application is guaranteed that a read or
|
|
206 |
* write operation of up to the number of bytes returned from
|
|
207 |
* <code>available()</code> will not block; however, there is no guarantee
|
|
208 |
* that attempts to read or write more data will block.
|
|
209 |
*
|
|
210 |
* @return the amount of data available, in bytes
|
|
211 |
*/
|
|
212 |
public int available();
|
|
213 |
|
|
214 |
/**
|
|
215 |
* Obtains the current position in the audio data, in sample frames.
|
|
216 |
* The frame position measures the number of sample
|
|
217 |
* frames captured by, or rendered from, the line since it was opened.
|
|
218 |
* This return value will wrap around after 2^31 frames. It is recommended
|
|
219 |
* to use <code>getLongFramePosition</code> instead.
|
|
220 |
*
|
|
221 |
* @return the number of frames already processed since the line was opened
|
|
222 |
* @see #getLongFramePosition()
|
|
223 |
*/
|
|
224 |
public int getFramePosition();
|
|
225 |
|
|
226 |
|
|
227 |
/**
|
|
228 |
* Obtains the current position in the audio data, in sample frames.
|
|
229 |
* The frame position measures the number of sample
|
|
230 |
* frames captured by, or rendered from, the line since it was opened.
|
|
231 |
*
|
|
232 |
* @return the number of frames already processed since the line was opened
|
|
233 |
* @since 1.5
|
|
234 |
*/
|
|
235 |
public long getLongFramePosition();
|
|
236 |
|
|
237 |
|
|
238 |
/**
|
|
239 |
* Obtains the current position in the audio data, in microseconds.
|
|
240 |
* The microsecond position measures the time corresponding to the number
|
|
241 |
* of sample frames captured by, or rendered from, the line since it was opened.
|
|
242 |
* The level of precision is not guaranteed. For example, an implementation
|
|
243 |
* might calculate the microsecond position from the current frame position
|
|
244 |
* and the audio sample frame rate. The precision in microseconds would
|
|
245 |
* then be limited to the number of microseconds per sample frame.
|
|
246 |
*
|
|
247 |
* @return the number of microseconds of data processed since the line was opened
|
|
248 |
*/
|
|
249 |
public long getMicrosecondPosition();
|
|
250 |
|
|
251 |
/**
|
|
252 |
* Obtains the current volume level for the line. This level is a measure
|
|
253 |
* of the signal's current amplitude, and should not be confused with the
|
|
254 |
* current setting of a gain control. The range is from 0.0 (silence) to
|
|
255 |
* 1.0 (maximum possible amplitude for the sound waveform). The units
|
|
256 |
* measure linear amplitude, not decibels.
|
|
257 |
*
|
|
258 |
* @return the current amplitude of the signal in this line, or
|
|
259 |
* <code>{@link AudioSystem#NOT_SPECIFIED}</code>
|
|
260 |
*/
|
|
261 |
public float getLevel();
|
|
262 |
|
|
263 |
/**
|
|
264 |
* Besides the class information inherited from its superclass,
|
|
265 |
* <code>DataLine.Info</code> provides additional information specific to data lines.
|
|
266 |
* This information includes:
|
|
267 |
* <ul>
|
|
268 |
* <li> the audio formats supported by the data line
|
|
269 |
* <li> the minimum and maximum sizes of its internal buffer
|
|
270 |
* </ul>
|
|
271 |
* Because a <code>Line.Info</code> knows the class of the line its describes, a
|
|
272 |
* <code>DataLine.Info</code> object can describe <code>DataLine</code>
|
|
273 |
* subinterfaces such as <code>{@link SourceDataLine}</code>,
|
|
274 |
* <code>{@link TargetDataLine}</code>, and <code>{@link Clip}</code>.
|
|
275 |
* You can query a mixer for lines of any of these types, passing an appropriate
|
|
276 |
* instance of <code>DataLine.Info</code> as the argument to a method such as
|
|
277 |
* <code>{@link Mixer#getLine Mixer.getLine(Line.Info)}</code>.
|
|
278 |
*
|
|
279 |
* @see Line.Info
|
|
280 |
* @author Kara Kytle
|
|
281 |
* @since 1.3
|
|
282 |
*/
|
|
283 |
public static class Info extends Line.Info {
|
|
284 |
|
|
285 |
private AudioFormat[] formats;
|
|
286 |
private int minBufferSize;
|
|
287 |
private int maxBufferSize;
|
|
288 |
|
|
289 |
/**
|
|
290 |
* Constructs a data line's info object from the specified information,
|
|
291 |
* which includes a set of supported audio formats and a range for the buffer size.
|
|
292 |
* This constructor is typically used by mixer implementations
|
|
293 |
* when returning information about a supported line.
|
|
294 |
*
|
|
295 |
* @param lineClass the class of the data line described by the info object
|
|
296 |
* @param formats set of formats supported
|
|
297 |
* @param minBufferSize minimum buffer size supported by the data line, in bytes
|
|
298 |
* @param maxBufferSize maximum buffer size supported by the data line, in bytes
|
|
299 |
*/
|
|
300 |
public Info(Class<?> lineClass, AudioFormat[] formats, int minBufferSize, int maxBufferSize) {
|
|
301 |
|
|
302 |
super(lineClass);
|
|
303 |
|
|
304 |
if (formats == null) {
|
|
305 |
this.formats = new AudioFormat[0];
|
|
306 |
} else {
|
|
307 |
this.formats = formats;
|
|
308 |
}
|
|
309 |
|
|
310 |
this.minBufferSize = minBufferSize;
|
|
311 |
this.maxBufferSize = maxBufferSize;
|
|
312 |
}
|
|
313 |
|
|
314 |
|
|
315 |
/**
|
|
316 |
* Constructs a data line's info object from the specified information,
|
|
317 |
* which includes a single audio format and a desired buffer size.
|
|
318 |
* This constructor is typically used by an application to
|
|
319 |
* describe a desired line.
|
|
320 |
*
|
|
321 |
* @param lineClass the class of the data line described by the info object
|
|
322 |
* @param format desired format
|
|
323 |
* @param bufferSize desired buffer size in bytes
|
|
324 |
*/
|
|
325 |
public Info(Class<?> lineClass, AudioFormat format, int bufferSize) {
|
|
326 |
|
|
327 |
super(lineClass);
|
|
328 |
|
|
329 |
if (format == null) {
|
|
330 |
this.formats = new AudioFormat[0];
|
|
331 |
} else {
|
|
332 |
AudioFormat[] formats = { format };
|
|
333 |
this.formats = formats;
|
|
334 |
}
|
|
335 |
|
|
336 |
this.minBufferSize = bufferSize;
|
|
337 |
this.maxBufferSize = bufferSize;
|
|
338 |
}
|
|
339 |
|
|
340 |
|
|
341 |
/**
|
|
342 |
* Constructs a data line's info object from the specified information,
|
|
343 |
* which includes a single audio format.
|
|
344 |
* This constructor is typically used by an application to
|
|
345 |
* describe a desired line.
|
|
346 |
*
|
|
347 |
* @param lineClass the class of the data line described by the info object
|
|
348 |
* @param format desired format
|
|
349 |
*/
|
|
350 |
public Info(Class<?> lineClass, AudioFormat format) {
|
|
351 |
this(lineClass, format, AudioSystem.NOT_SPECIFIED);
|
|
352 |
}
|
|
353 |
|
|
354 |
|
|
355 |
/**
|
|
356 |
* Obtains a set of audio formats supported by the data line.
|
|
357 |
* Note that <code>isFormatSupported(AudioFormat)</code> might return
|
|
358 |
* <code>true</code> for certain additional formats that are missing from
|
|
359 |
* the set returned by <code>getFormats()</code>. The reverse is not
|
|
360 |
* the case: <code>isFormatSupported(AudioFormat)</code> is guaranteed to return
|
|
361 |
* <code>true</code> for all formats returned by <code>getFormats()</code>.
|
|
362 |
*
|
|
363 |
* Some fields in the AudioFormat instances can be set to
|
|
364 |
* {@link javax.sound.sampled.AudioSystem#NOT_SPECIFIED NOT_SPECIFIED}
|
|
365 |
* if that field does not apply to the format,
|
|
366 |
* or if the format supports a wide range of values for that field.
|
|
367 |
* For example, a multi-channel device supporting up to
|
|
368 |
* 64 channels, could set the channel field in the
|
|
369 |
* <code>AudioFormat</code> instances returned by this
|
|
370 |
* method to <code>NOT_SPECIFIED</code>.
|
|
371 |
*
|
|
372 |
* @return a set of supported audio formats.
|
|
373 |
* @see #isFormatSupported(AudioFormat)
|
|
374 |
*/
|
|
375 |
public AudioFormat[] getFormats() {
|
|
376 |
|
|
377 |
AudioFormat[] returnedArray = new AudioFormat[formats.length];
|
|
378 |
System.arraycopy(formats, 0, returnedArray, 0, formats.length);
|
|
379 |
return returnedArray;
|
|
380 |
}
|
|
381 |
|
|
382 |
/**
|
|
383 |
* Indicates whether this data line supports a particular audio format.
|
|
384 |
* The default implementation of this method simply returns <code>true</code> if
|
|
385 |
* the specified format matches any of the supported formats.
|
|
386 |
*
|
|
387 |
* @param format the audio format for which support is queried.
|
|
388 |
* @return <code>true</code> if the format is supported, otherwise <code>false</code>
|
|
389 |
* @see #getFormats
|
|
390 |
* @see AudioFormat#matches
|
|
391 |
*/
|
|
392 |
public boolean isFormatSupported(AudioFormat format) {
|
|
393 |
|
|
394 |
for (int i = 0; i < formats.length; i++) {
|
|
395 |
if (format.matches(formats[i])) {
|
|
396 |
return true;
|
|
397 |
}
|
|
398 |
}
|
|
399 |
|
|
400 |
return false;
|
|
401 |
}
|
|
402 |
|
|
403 |
/**
|
|
404 |
* Obtains the minimum buffer size supported by the data line.
|
|
405 |
* @return minimum buffer size in bytes, or <code>AudioSystem.NOT_SPECIFIED</code>
|
|
406 |
*/
|
|
407 |
public int getMinBufferSize() {
|
|
408 |
return minBufferSize;
|
|
409 |
}
|
|
410 |
|
|
411 |
|
|
412 |
/**
|
|
413 |
* Obtains the maximum buffer size supported by the data line.
|
|
414 |
* @return maximum buffer size in bytes, or <code>AudioSystem.NOT_SPECIFIED</code>
|
|
415 |
*/
|
|
416 |
public int getMaxBufferSize() {
|
|
417 |
return maxBufferSize;
|
|
418 |
}
|
|
419 |
|
|
420 |
|
|
421 |
/**
|
|
422 |
* Determines whether the specified info object matches this one.
|
|
423 |
* To match, the superclass match requirements must be met. In
|
|
424 |
* addition, this object's minimum buffer size must be at least as
|
|
425 |
* large as that of the object specified, its maximum buffer size must
|
|
426 |
* be at most as large as that of the object specified, and all of its
|
|
427 |
* formats must match formats supported by the object specified.
|
|
428 |
* @return <code>true</code> if this object matches the one specified,
|
|
429 |
* otherwise <code>false</code>.
|
|
430 |
*/
|
|
431 |
public boolean matches(Line.Info info) {
|
|
432 |
|
|
433 |
if (! (super.matches(info)) ) {
|
|
434 |
return false;
|
|
435 |
}
|
|
436 |
|
|
437 |
Info dataLineInfo = (Info)info;
|
|
438 |
|
|
439 |
// treat anything < 0 as NOT_SPECIFIED
|
|
440 |
// demo code in old Java Sound Demo used a wrong buffer calculation
|
|
441 |
// that would lead to arbitrary negative values
|
|
442 |
if ((getMaxBufferSize() >= 0) && (dataLineInfo.getMaxBufferSize() >= 0)) {
|
|
443 |
if (getMaxBufferSize() > dataLineInfo.getMaxBufferSize()) {
|
|
444 |
return false;
|
|
445 |
}
|
|
446 |
}
|
|
447 |
|
|
448 |
if ((getMinBufferSize() >= 0) && (dataLineInfo.getMinBufferSize() >= 0)) {
|
|
449 |
if (getMinBufferSize() < dataLineInfo.getMinBufferSize()) {
|
|
450 |
return false;
|
|
451 |
}
|
|
452 |
}
|
|
453 |
|
|
454 |
AudioFormat[] localFormats = getFormats();
|
|
455 |
|
|
456 |
if (localFormats != null) {
|
|
457 |
|
|
458 |
for (int i = 0; i < localFormats.length; i++) {
|
|
459 |
if (! (localFormats[i] == null) ) {
|
|
460 |
if (! (dataLineInfo.isFormatSupported(localFormats[i])) ) {
|
|
461 |
return false;
|
|
462 |
}
|
|
463 |
}
|
|
464 |
}
|
|
465 |
}
|
|
466 |
|
|
467 |
return true;
|
|
468 |
}
|
|
469 |
|
|
470 |
/**
|
|
471 |
* Obtains a textual description of the data line info.
|
|
472 |
* @return a string description
|
|
473 |
*/
|
|
474 |
public String toString() {
|
|
475 |
|
|
476 |
StringBuffer buf = new StringBuffer();
|
|
477 |
|
|
478 |
if ( (formats.length == 1) && (formats[0] != null) ) {
|
|
479 |
buf.append(" supporting format " + formats[0]);
|
|
480 |
} else if (getFormats().length > 1) {
|
|
481 |
buf.append(" supporting " + getFormats().length + " audio formats");
|
|
482 |
}
|
|
483 |
|
|
484 |
if ( (minBufferSize != AudioSystem.NOT_SPECIFIED) && (maxBufferSize != AudioSystem.NOT_SPECIFIED) ) {
|
|
485 |
buf.append(", and buffers of " + minBufferSize + " to " + maxBufferSize + " bytes");
|
|
486 |
} else if ( (minBufferSize != AudioSystem.NOT_SPECIFIED) && (minBufferSize > 0) ) {
|
|
487 |
buf.append(", and buffers of at least " + minBufferSize + " bytes");
|
|
488 |
} else if (maxBufferSize != AudioSystem.NOT_SPECIFIED) {
|
|
489 |
buf.append(", and buffers of up to " + minBufferSize + " bytes");
|
|
490 |
}
|
|
491 |
|
|
492 |
return new String(super.toString() + buf);
|
|
493 |
}
|
|
494 |
} // class Info
|
|
495 |
|
|
496 |
} // interface DataLine
|