2
|
1 |
/*
|
5506
|
2 |
* Copyright (c) 1999, 2006, Oracle and/or its affiliates. All rights reserved.
|
2
|
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
|
5506
|
7 |
* published by the Free Software Foundation. Oracle designates this
|
2
|
8 |
* particular file as subject to the "Classpath" exception as provided
|
5506
|
9 |
* by Oracle in the LICENSE file that accompanied this code.
|
2
|
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 |
*
|
5506
|
21 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
22 |
* or visit www.oracle.com if you need additional information or have any
|
|
23 |
* questions.
|
2
|
24 |
*/
|
|
25 |
|
|
26 |
package javax.sound.midi;
|
|
27 |
|
|
28 |
import java.io.FileInputStream;
|
|
29 |
import java.io.File;
|
|
30 |
import java.io.InputStream;
|
|
31 |
import java.io.OutputStream;
|
|
32 |
import java.io.IOException;
|
|
33 |
|
|
34 |
import java.util.ArrayList;
|
|
35 |
import java.util.HashSet;
|
|
36 |
import java.util.Iterator;
|
|
37 |
import java.util.List;
|
|
38 |
import java.util.Set;
|
|
39 |
|
|
40 |
import java.net.URL;
|
|
41 |
|
|
42 |
import javax.sound.midi.spi.MidiFileWriter;
|
|
43 |
import javax.sound.midi.spi.MidiFileReader;
|
|
44 |
import javax.sound.midi.spi.SoundbankReader;
|
|
45 |
import javax.sound.midi.spi.MidiDeviceProvider;
|
|
46 |
|
|
47 |
import com.sun.media.sound.JDK13Services;
|
|
48 |
import com.sun.media.sound.ReferenceCountingDevice;
|
|
49 |
import com.sun.media.sound.AutoConnectSequencer;
|
|
50 |
|
|
51 |
|
|
52 |
/**
|
|
53 |
* The <code>MidiSystem</code> class provides access to the installed MIDI
|
|
54 |
* system resources, including devices such as synthesizers, sequencers, and
|
|
55 |
* MIDI input and output ports. A typical simple MIDI application might
|
|
56 |
* begin by invoking one or more <code>MidiSystem</code> methods to learn
|
|
57 |
* what devices are installed and to obtain the ones needed in that
|
|
58 |
* application.
|
|
59 |
* <p>
|
|
60 |
* The class also has methods for reading files, streams, and URLs that
|
|
61 |
* contain standard MIDI file data or soundbanks. You can query the
|
|
62 |
* <code>MidiSystem</code> for the format of a specified MIDI file.
|
|
63 |
* <p>
|
|
64 |
* You cannot instantiate a <code>MidiSystem</code>; all the methods are
|
|
65 |
* static.
|
|
66 |
*
|
|
67 |
* <p>Properties can be used to specify default MIDI devices.
|
|
68 |
* Both system properties and a properties file are considered.
|
|
69 |
* The properties file is "lib/sound.properties" in the JRE
|
|
70 |
* directory. If a property exists both as a system property and in the
|
|
71 |
* properties file, the system property takes precedence. If none is
|
|
72 |
* specified, a suitable default is chosen among the available devices.
|
|
73 |
* The syntax of the properties file is specified in
|
|
74 |
* {@link java.util.Properties#load(InputStream) Properties.load}. The
|
|
75 |
* following table lists the available property keys and which methods
|
|
76 |
* consider them:
|
|
77 |
*
|
|
78 |
* <table border=0>
|
|
79 |
* <tr>
|
|
80 |
* <th>Property Key</th>
|
|
81 |
* <th>Interface</th>
|
|
82 |
* <th>Affected Method</th>
|
|
83 |
* </tr>
|
|
84 |
* <tr>
|
|
85 |
* <td><code>javax.sound.midi.Receiver</code></td>
|
|
86 |
* <td>{@link Receiver}</td>
|
|
87 |
* <td>{@link #getReceiver}</td>
|
|
88 |
* </tr>
|
|
89 |
* <tr>
|
|
90 |
* <td><code>javax.sound.midi.Sequencer</code></td>
|
|
91 |
* <td>{@link Sequencer}</td>
|
|
92 |
* <td>{@link #getSequencer}</td>
|
|
93 |
* </tr>
|
|
94 |
* <tr>
|
|
95 |
* <td><code>javax.sound.midi.Synthesizer</code></td>
|
|
96 |
* <td>{@link Synthesizer}</td>
|
|
97 |
* <td>{@link #getSynthesizer}</td>
|
|
98 |
* </tr>
|
|
99 |
* <tr>
|
|
100 |
* <td><code>javax.sound.midi.Transmitter</code></td>
|
|
101 |
* <td>{@link Transmitter}</td>
|
|
102 |
* <td>{@link #getTransmitter}</td>
|
|
103 |
* </tr>
|
|
104 |
* </table>
|
|
105 |
*
|
|
106 |
* The property value consists of the provider class name
|
|
107 |
* and the device name, separated by the hash mark ("#").
|
|
108 |
* The provider class name is the fully-qualified
|
|
109 |
* name of a concrete {@link javax.sound.midi.spi.MidiDeviceProvider
|
|
110 |
* MIDI device provider} class. The device name is matched against
|
|
111 |
* the <code>String</code> returned by the <code>getName</code>
|
|
112 |
* method of <code>MidiDevice.Info</code>.
|
|
113 |
* Either the class name, or the device name may be omitted.
|
|
114 |
* If only the class name is specified, the trailing hash mark
|
|
115 |
* is optional.
|
|
116 |
*
|
|
117 |
* <p>If the provider class is specified, and it can be
|
|
118 |
* successully retrieved from the installed providers,
|
|
119 |
* the list of
|
|
120 |
* <code>MidiDevice.Info</code> objects is retrieved
|
|
121 |
* from the provider. Otherwise, or when these devices
|
|
122 |
* do not provide a subsequent match, the list is retrieved
|
|
123 |
* from {@link #getMidiDeviceInfo} to contain
|
|
124 |
* all available <code>MidiDevice.Info</code> objects.
|
|
125 |
*
|
|
126 |
* <p>If a device name is specified, the resulting list of
|
|
127 |
* <code>MidiDevice.Info</code> objects is searched:
|
|
128 |
* the first one with a matching name, and whose
|
|
129 |
* <code>MidiDevice</code> implements the
|
|
130 |
* respective interface, will be returned.
|
|
131 |
* If no matching <code>MidiDevice.Info</code> object
|
|
132 |
* is found, or the device name is not specified,
|
|
133 |
* the first suitable device from the resulting
|
|
134 |
* list will be returned. For Sequencer and Synthesizer,
|
|
135 |
* a device is suitable if it implements the respective
|
|
136 |
* interface; whereas for Receiver and Transmitter, a device is
|
|
137 |
* suitable if it
|
|
138 |
* implements neither Sequencer nor Synthesizer and provides
|
|
139 |
* at least one Receiver or Transmitter, respectively.
|
|
140 |
*
|
|
141 |
* For example, the property <code>javax.sound.midi.Receiver</code>
|
|
142 |
* with a value
|
|
143 |
* <code>"com.sun.media.sound.MidiProvider#SunMIDI1"</code>
|
|
144 |
* will have the following consequences when
|
|
145 |
* <code>getReceiver</code> is called:
|
|
146 |
* if the class <code>com.sun.media.sound.MidiProvider</code> exists
|
|
147 |
* in the list of installed MIDI device providers,
|
|
148 |
* the first <code>Receiver</code> device with name
|
|
149 |
* <code>"SunMIDI1"</code> will be returned. If it cannot
|
|
150 |
* be found, the first <code>Receiver</code> from that provider
|
|
151 |
* will be returned, regardless of name.
|
|
152 |
* If there is none, the first <code>Receiver</code> with name
|
|
153 |
* <code>"SunMIDI1"</code> in the list of all devices
|
|
154 |
* (as returned by <code>getMidiDeviceInfo</code>) will be returned,
|
|
155 |
* or, if not found, the first <code>Receiver</code> that can
|
|
156 |
* be found in the list of all devices is returned.
|
|
157 |
* If that fails, too, a <code>MidiUnavailableException</code>
|
|
158 |
* is thrown.
|
|
159 |
*
|
|
160 |
* @author Kara Kytle
|
|
161 |
* @author Florian Bomers
|
|
162 |
* @author Matthias Pfisterer
|
|
163 |
*/
|
|
164 |
public class MidiSystem {
|
|
165 |
|
|
166 |
/**
|
|
167 |
* Private no-args constructor for ensuring against instantiation.
|
|
168 |
*/
|
|
169 |
private MidiSystem() {
|
|
170 |
}
|
|
171 |
|
|
172 |
|
|
173 |
/**
|
|
174 |
* Obtains an array of information objects representing
|
|
175 |
* the set of all MIDI devices available on the system.
|
|
176 |
* A returned information object can then be used to obtain the
|
|
177 |
* corresponding device object, by invoking
|
|
178 |
* {@link #getMidiDevice(MidiDevice.Info) getMidiDevice}.
|
|
179 |
*
|
|
180 |
* @return an array of <code>MidiDevice.Info</code> objects, one
|
|
181 |
* for each installed MIDI device. If no such devices are installed,
|
|
182 |
* an array of length 0 is returned.
|
|
183 |
*/
|
|
184 |
public static MidiDevice.Info[] getMidiDeviceInfo() {
|
|
185 |
List allInfos = new ArrayList();
|
|
186 |
List providers = getMidiDeviceProviders();
|
|
187 |
|
|
188 |
for(int i = 0; i < providers.size(); i++) {
|
|
189 |
MidiDeviceProvider provider = (MidiDeviceProvider) providers.get(i);
|
|
190 |
MidiDevice.Info[] tmpinfo = provider.getDeviceInfo();
|
|
191 |
for (int j = 0; j < tmpinfo.length; j++) {
|
|
192 |
allInfos.add( tmpinfo[j] );
|
|
193 |
}
|
|
194 |
}
|
|
195 |
MidiDevice.Info[] infosArray = (MidiDevice.Info[]) allInfos.toArray(new MidiDevice.Info[0]);
|
|
196 |
return infosArray;
|
|
197 |
}
|
|
198 |
|
|
199 |
|
|
200 |
/**
|
|
201 |
* Obtains the requested MIDI device.
|
|
202 |
*
|
|
203 |
* @param info a device information object representing the desired device.
|
|
204 |
* @return the requested device
|
|
205 |
* @throws MidiUnavailableException if the requested device is not available
|
|
206 |
* due to resource restrictions
|
|
207 |
* @throws IllegalArgumentException if the info object does not represent
|
|
208 |
* a MIDI device installed on the system
|
|
209 |
* @see #getMidiDeviceInfo
|
|
210 |
*/
|
|
211 |
public static MidiDevice getMidiDevice(MidiDevice.Info info) throws MidiUnavailableException {
|
|
212 |
List providers = getMidiDeviceProviders();
|
|
213 |
|
|
214 |
for(int i = 0; i < providers.size(); i++) {
|
|
215 |
MidiDeviceProvider provider = (MidiDeviceProvider) providers.get(i);
|
|
216 |
if (provider.isDeviceSupported(info)) {
|
|
217 |
MidiDevice device = provider.getDevice(info);
|
|
218 |
return device;
|
|
219 |
}
|
|
220 |
}
|
|
221 |
throw new IllegalArgumentException("Requested device not installed: " + info);
|
|
222 |
}
|
|
223 |
|
|
224 |
|
|
225 |
/**
|
|
226 |
* Obtains a MIDI receiver from an external MIDI port
|
|
227 |
* or other default device.
|
|
228 |
*
|
|
229 |
* <p>If the system property
|
|
230 |
* <code>javax.sound.midi.Receiver</code>
|
|
231 |
* is defined or it is defined in the file "sound.properties",
|
|
232 |
* it is used to identify the device that provides the default receiver.
|
|
233 |
* For details, refer to the {@link MidiSystem class description}.
|
|
234 |
*
|
|
235 |
* If a suitable MIDI port is not available, the Receiver is
|
|
236 |
* retrieved from an installed synthesizer.
|
|
237 |
*
|
|
238 |
* <p>If this method returns successfully, the {@link
|
|
239 |
* javax.sound.midi.MidiDevice MidiDevice} the
|
|
240 |
* <code>Receiver</code> belongs to is opened implicitly, if it is
|
|
241 |
* not already open. It is possible to close an implicitly opened
|
|
242 |
* device by calling {@link javax.sound.midi.Receiver#close close}
|
|
243 |
* on the returned <code>Receiver</code>. All open <code>Receiver</code>
|
|
244 |
* instances have to be closed in order to release system resources
|
|
245 |
* hold by the <code>MidiDevice</code>. For a
|
|
246 |
* detailed description of open/close behaviour see the class
|
|
247 |
* description of {@link javax.sound.midi.MidiDevice MidiDevice}.
|
|
248 |
*
|
|
249 |
*
|
|
250 |
* @return the default MIDI receiver
|
|
251 |
* @throws MidiUnavailableException if the default receiver is not
|
|
252 |
* available due to resource restrictions,
|
|
253 |
* or no device providing receivers is installed in the system
|
|
254 |
*/
|
|
255 |
public static Receiver getReceiver() throws MidiUnavailableException {
|
|
256 |
// may throw MidiUnavailableException
|
|
257 |
MidiDevice device = getDefaultDeviceWrapper(Receiver.class);
|
|
258 |
Receiver receiver;
|
|
259 |
if (device instanceof ReferenceCountingDevice) {
|
|
260 |
receiver = ((ReferenceCountingDevice) device).getReceiverReferenceCounting();
|
|
261 |
} else {
|
|
262 |
receiver = device.getReceiver();
|
|
263 |
}
|
|
264 |
return receiver;
|
|
265 |
}
|
|
266 |
|
|
267 |
|
|
268 |
/**
|
|
269 |
* Obtains a MIDI transmitter from an external MIDI port
|
|
270 |
* or other default source.
|
|
271 |
*
|
|
272 |
* <p>If the system property
|
|
273 |
* <code>javax.sound.midi.Transmitter</code>
|
|
274 |
* is defined or it is defined in the file "sound.properties",
|
|
275 |
* it is used to identify the device that provides the default transmitter.
|
|
276 |
* For details, refer to the {@link MidiSystem class description}.
|
|
277 |
*
|
|
278 |
* If this method returns successfully, the {@link
|
|
279 |
* javax.sound.midi.MidiDevice MidiDevice} the
|
|
280 |
* <code>Transmitter</code> belongs to is opened implicitly, if it
|
|
281 |
* is not already open. It is possible to close an implicitly
|
|
282 |
* opened device by calling {@link
|
|
283 |
* javax.sound.midi.Transmitter#close close} on the returned
|
|
284 |
* <code>Transmitter</code>. All open <code>Transmitter</code>
|
|
285 |
* instances have to be closed in order to release system resources
|
|
286 |
* hold by the <code>MidiDevice</code>. For a detailed description
|
|
287 |
* of open/close behaviour see the class description of {@link
|
|
288 |
* javax.sound.midi.MidiDevice MidiDevice}.
|
|
289 |
*
|
|
290 |
* @return the default MIDI transmitter
|
|
291 |
* @throws MidiUnavailableException if the default transmitter is not
|
|
292 |
* available due to resource restrictions,
|
|
293 |
* or no device providing transmitters is installed in the system
|
|
294 |
*/
|
|
295 |
public static Transmitter getTransmitter() throws MidiUnavailableException {
|
|
296 |
// may throw MidiUnavailableException
|
|
297 |
MidiDevice device = getDefaultDeviceWrapper(Transmitter.class);
|
|
298 |
Transmitter transmitter;
|
|
299 |
if (device instanceof ReferenceCountingDevice) {
|
|
300 |
transmitter = ((ReferenceCountingDevice) device).getTransmitterReferenceCounting();
|
|
301 |
} else {
|
|
302 |
transmitter = device.getTransmitter();
|
|
303 |
}
|
|
304 |
return transmitter;
|
|
305 |
}
|
|
306 |
|
|
307 |
|
|
308 |
/**
|
|
309 |
* Obtains the default synthesizer.
|
|
310 |
*
|
|
311 |
* <p>If the system property
|
|
312 |
* <code>javax.sound.midi.Synthesizer</code>
|
|
313 |
* is defined or it is defined in the file "sound.properties",
|
|
314 |
* it is used to identify the default synthesizer.
|
|
315 |
* For details, refer to the {@link MidiSystem class description}.
|
|
316 |
*
|
|
317 |
* @return the default synthesizer
|
|
318 |
* @throws MidiUnavailableException if the synthesizer is not
|
|
319 |
* available due to resource restrictions,
|
|
320 |
* or no synthesizer is installed in the system
|
|
321 |
*/
|
|
322 |
public static Synthesizer getSynthesizer() throws MidiUnavailableException {
|
|
323 |
// may throw MidiUnavailableException
|
|
324 |
return (Synthesizer) getDefaultDeviceWrapper(Synthesizer.class);
|
|
325 |
}
|
|
326 |
|
|
327 |
|
|
328 |
/**
|
|
329 |
* Obtains the default <code>Sequencer</code>, connected to
|
|
330 |
* a default device.
|
|
331 |
* The returned <code>Sequencer</code> instance is
|
|
332 |
* connected to the default <code>Synthesizer</code>,
|
|
333 |
* as returned by {@link #getSynthesizer}.
|
|
334 |
* If there is no <code>Synthesizer</code>
|
|
335 |
* available, or the default <code>Synthesizer</code>
|
|
336 |
* cannot be opened, the <code>sequencer</code> is connected
|
|
337 |
* to the default <code>Receiver</code>, as returned
|
|
338 |
* by {@link #getReceiver}.
|
|
339 |
* The connection is made by retrieving a <code>Transmitter</code>
|
|
340 |
* instance from the <code>Sequencer</code> and setting its
|
|
341 |
* <code>Receiver</code>.
|
|
342 |
* Closing and re-opening the sequencer will restore the
|
|
343 |
* connection to the default device.
|
|
344 |
*
|
|
345 |
* <p>This method is equivalent to calling
|
|
346 |
* <code>getSequencer(true)</code>.
|
|
347 |
*
|
|
348 |
* <p>If the system property
|
|
349 |
* <code>javax.sound.midi.Sequencer</code>
|
|
350 |
* is defined or it is defined in the file "sound.properties",
|
|
351 |
* it is used to identify the default sequencer.
|
|
352 |
* For details, refer to the {@link MidiSystem class description}.
|
|
353 |
*
|
|
354 |
* @return the default sequencer, connected to a default Receiver
|
|
355 |
* @throws MidiUnavailableException if the sequencer is not
|
|
356 |
* available due to resource restrictions,
|
|
357 |
* or there is no <code>Receiver</code> available by any
|
|
358 |
* installed <code>MidiDevice</code>,
|
|
359 |
* or no sequencer is installed in the system.
|
|
360 |
* @see #getSequencer(boolean)
|
|
361 |
* @see #getSynthesizer
|
|
362 |
* @see #getReceiver
|
|
363 |
*/
|
|
364 |
public static Sequencer getSequencer() throws MidiUnavailableException {
|
|
365 |
return getSequencer(true);
|
|
366 |
}
|
|
367 |
|
|
368 |
|
|
369 |
|
|
370 |
/**
|
|
371 |
* Obtains the default <code>Sequencer</code>, optionally
|
|
372 |
* connected to a default device.
|
|
373 |
*
|
|
374 |
* <p>If <code>connected</code> is true, the returned
|
|
375 |
* <code>Sequencer</code> instance is
|
|
376 |
* connected to the default <code>Synthesizer</code>,
|
|
377 |
* as returned by {@link #getSynthesizer}.
|
|
378 |
* If there is no <code>Synthesizer</code>
|
|
379 |
* available, or the default <code>Synthesizer</code>
|
|
380 |
* cannot be opened, the <code>sequencer</code> is connected
|
|
381 |
* to the default <code>Receiver</code>, as returned
|
|
382 |
* by {@link #getReceiver}.
|
|
383 |
* The connection is made by retrieving a <code>Transmitter</code>
|
|
384 |
* instance from the <code>Sequencer</code> and setting its
|
|
385 |
* <code>Receiver</code>.
|
|
386 |
* Closing and re-opening the sequencer will restore the
|
|
387 |
* connection to the default device.
|
|
388 |
*
|
|
389 |
* <p>If <code>connected</code> is false, the returned
|
|
390 |
* <code>Sequencer</code> instance is not connected, it
|
|
391 |
* has no open <code>Transmitters</code>. In order to
|
|
392 |
* play the sequencer on a MIDI device, or a <code>Synthesizer</code>,
|
|
393 |
* it is necessary to get a <code>Transmitter</code> and set its
|
|
394 |
* <code>Receiver</code>.
|
|
395 |
*
|
|
396 |
* <p>If the system property
|
|
397 |
* <code>javax.sound.midi.Sequencer</code>
|
|
398 |
* is defined or it is defined in the file "sound.properties",
|
|
399 |
* it is used to identify the default sequencer.
|
|
400 |
* For details, refer to the {@link MidiSystem class description}.
|
|
401 |
*
|
|
402 |
* @return the default sequencer
|
|
403 |
* @throws MidiUnavailableException if the sequencer is not
|
|
404 |
* available due to resource restrictions,
|
|
405 |
* or no sequencer is installed in the system,
|
|
406 |
* or if <code>connected</code> is true, and there is
|
|
407 |
* no <code>Receiver</code> available by any installed
|
|
408 |
* <code>MidiDevice</code>
|
|
409 |
* @see #getSynthesizer
|
|
410 |
* @see #getReceiver
|
|
411 |
* @since 1.5
|
|
412 |
*/
|
|
413 |
public static Sequencer getSequencer(boolean connected)
|
|
414 |
throws MidiUnavailableException {
|
|
415 |
Sequencer seq = (Sequencer) getDefaultDeviceWrapper(Sequencer.class);
|
|
416 |
|
|
417 |
if (connected) {
|
|
418 |
// IMPORTANT: this code needs to be synch'ed with
|
|
419 |
// all AutoConnectSequencer instances,
|
|
420 |
// (e.g. RealTimeSequencer) because the
|
|
421 |
// same algorithm for synth retrieval
|
|
422 |
// needs to be used!
|
|
423 |
|
|
424 |
Receiver rec = null;
|
|
425 |
MidiUnavailableException mue = null;
|
|
426 |
|
|
427 |
// first try to connect to the default synthesizer
|
|
428 |
try {
|
|
429 |
Synthesizer synth = getSynthesizer();
|
|
430 |
if (synth instanceof ReferenceCountingDevice) {
|
|
431 |
rec = ((ReferenceCountingDevice) synth).getReceiverReferenceCounting();
|
|
432 |
// only use MixerSynth if it could successfully load a soundbank
|
|
433 |
if (synth.getClass().toString().contains("com.sun.media.sound.MixerSynth")
|
|
434 |
&& (synth.getDefaultSoundbank() == null)) {
|
|
435 |
// don't use this receiver if no soundbank available
|
|
436 |
rec = null;
|
|
437 |
synth.close();
|
|
438 |
}
|
|
439 |
} else {
|
|
440 |
synth.open();
|
|
441 |
try {
|
|
442 |
rec = synth.getReceiver();
|
|
443 |
} finally {
|
|
444 |
// make sure that the synth is properly closed
|
|
445 |
if (rec == null) {
|
|
446 |
synth.close();
|
|
447 |
}
|
|
448 |
}
|
|
449 |
}
|
|
450 |
} catch (MidiUnavailableException e) {
|
|
451 |
// something went wrong with synth
|
|
452 |
if (e instanceof MidiUnavailableException) {
|
|
453 |
mue = (MidiUnavailableException) e;
|
|
454 |
}
|
|
455 |
}
|
|
456 |
if (rec == null) {
|
|
457 |
// then try to connect to the default Receiver
|
|
458 |
try {
|
|
459 |
rec = MidiSystem.getReceiver();
|
|
460 |
} catch (Exception e) {
|
|
461 |
// something went wrong. Nothing to do then!
|
|
462 |
if (e instanceof MidiUnavailableException) {
|
|
463 |
mue = (MidiUnavailableException) e;
|
|
464 |
}
|
|
465 |
}
|
|
466 |
}
|
|
467 |
if (rec != null) {
|
|
468 |
seq.getTransmitter().setReceiver(rec);
|
|
469 |
if (seq instanceof AutoConnectSequencer) {
|
|
470 |
((AutoConnectSequencer) seq).setAutoConnect(rec);
|
|
471 |
}
|
|
472 |
} else {
|
|
473 |
if (mue != null) {
|
|
474 |
throw mue;
|
|
475 |
}
|
|
476 |
throw new MidiUnavailableException("no receiver available");
|
|
477 |
}
|
|
478 |
}
|
|
479 |
return seq;
|
|
480 |
}
|
|
481 |
|
|
482 |
|
|
483 |
|
|
484 |
|
|
485 |
/**
|
|
486 |
* Constructs a MIDI sound bank by reading it from the specified stream.
|
|
487 |
* The stream must point to
|
|
488 |
* a valid MIDI soundbank file. In general, MIDI soundbank providers may
|
|
489 |
* need to read some data from the stream before determining whether they
|
|
490 |
* support it. These parsers must
|
|
491 |
* be able to mark the stream, read enough data to determine whether they
|
|
492 |
* support the stream, and, if not, reset the stream's read pointer to
|
|
493 |
* its original position. If the input stream does not support this,
|
|
494 |
* this method may fail with an IOException.
|
|
495 |
* @param stream the source of the sound bank data.
|
|
496 |
* @return the sound bank
|
|
497 |
* @throws InvalidMidiDataException if the stream does not point to
|
|
498 |
* valid MIDI soundbank data recognized by the system
|
|
499 |
* @throws IOException if an I/O error occurred when loading the soundbank
|
|
500 |
* @see InputStream#markSupported
|
|
501 |
* @see InputStream#mark
|
|
502 |
*/
|
|
503 |
public static Soundbank getSoundbank(InputStream stream)
|
|
504 |
throws InvalidMidiDataException, IOException {
|
|
505 |
|
|
506 |
SoundbankReader sp = null;
|
|
507 |
Soundbank s = null;
|
|
508 |
|
|
509 |
List providers = getSoundbankReaders();
|
|
510 |
|
|
511 |
for(int i = 0; i < providers.size(); i++) {
|
|
512 |
sp = (SoundbankReader)providers.get(i);
|
|
513 |
s = sp.getSoundbank(stream);
|
|
514 |
|
|
515 |
if( s!= null) {
|
|
516 |
return s;
|
|
517 |
}
|
|
518 |
}
|
|
519 |
throw new InvalidMidiDataException("cannot get soundbank from stream");
|
|
520 |
|
|
521 |
}
|
|
522 |
|
|
523 |
|
|
524 |
/**
|
|
525 |
* Constructs a <code>Soundbank</code> by reading it from the specified URL.
|
|
526 |
* The URL must point to a valid MIDI soundbank file.
|
|
527 |
*
|
|
528 |
* @param url the source of the sound bank data
|
|
529 |
* @return the sound bank
|
|
530 |
* @throws InvalidMidiDataException if the URL does not point to valid MIDI
|
|
531 |
* soundbank data recognized by the system
|
|
532 |
* @throws IOException if an I/O error occurred when loading the soundbank
|
|
533 |
*/
|
|
534 |
public static Soundbank getSoundbank(URL url)
|
|
535 |
throws InvalidMidiDataException, IOException {
|
|
536 |
|
|
537 |
SoundbankReader sp = null;
|
|
538 |
Soundbank s = null;
|
|
539 |
|
|
540 |
List providers = getSoundbankReaders();
|
|
541 |
|
|
542 |
for(int i = 0; i < providers.size(); i++) {
|
|
543 |
sp = (SoundbankReader)providers.get(i);
|
|
544 |
s = sp.getSoundbank(url);
|
|
545 |
|
|
546 |
if( s!= null) {
|
|
547 |
return s;
|
|
548 |
}
|
|
549 |
}
|
|
550 |
throw new InvalidMidiDataException("cannot get soundbank from stream");
|
|
551 |
|
|
552 |
}
|
|
553 |
|
|
554 |
|
|
555 |
/**
|
|
556 |
* Constructs a <code>Soundbank</code> by reading it from the specified
|
|
557 |
* <code>File</code>.
|
|
558 |
* The <code>File</code> must point to a valid MIDI soundbank file.
|
|
559 |
*
|
|
560 |
* @param file the source of the sound bank data
|
|
561 |
* @return the sound bank
|
|
562 |
* @throws InvalidMidiDataException if the <code>File</code> does not
|
|
563 |
* point to valid MIDI soundbank data recognized by the system
|
|
564 |
* @throws IOException if an I/O error occurred when loading the soundbank
|
|
565 |
*/
|
|
566 |
public static Soundbank getSoundbank(File file)
|
|
567 |
throws InvalidMidiDataException, IOException {
|
|
568 |
|
|
569 |
SoundbankReader sp = null;
|
|
570 |
Soundbank s = null;
|
|
571 |
|
|
572 |
List providers = getSoundbankReaders();
|
|
573 |
|
|
574 |
for(int i = 0; i < providers.size(); i++) {
|
|
575 |
sp = (SoundbankReader)providers.get(i);
|
|
576 |
s = sp.getSoundbank(file);
|
|
577 |
|
|
578 |
if( s!= null) {
|
|
579 |
return s;
|
|
580 |
}
|
|
581 |
}
|
|
582 |
throw new InvalidMidiDataException("cannot get soundbank from stream");
|
|
583 |
}
|
|
584 |
|
|
585 |
|
|
586 |
|
|
587 |
/**
|
|
588 |
* Obtains the MIDI file format of the data in the specified input stream.
|
|
589 |
* The stream must point to valid MIDI file data for a file type recognized
|
|
590 |
* by the system.
|
|
591 |
* <p>
|
|
592 |
* This method and/or the code it invokes may need to read some data from
|
|
593 |
* the stream to determine whether its data format is supported. The
|
|
594 |
* implementation may therefore
|
|
595 |
* need to mark the stream, read enough data to determine whether it is in
|
|
596 |
* a supported format, and reset the stream's read pointer to its original
|
|
597 |
* position. If the input stream does not permit this set of operations,
|
|
598 |
* this method may fail with an <code>IOException</code>.
|
|
599 |
* <p>
|
|
600 |
* This operation can only succeed for files of a type which can be parsed
|
|
601 |
* by an installed file reader. It may fail with an InvalidMidiDataException
|
|
602 |
* even for valid files if no compatible file reader is installed. It
|
|
603 |
* will also fail with an InvalidMidiDataException if a compatible file reader
|
|
604 |
* is installed, but encounters errors while determining the file format.
|
|
605 |
*
|
|
606 |
* @param stream the input stream from which file format information
|
|
607 |
* should be extracted
|
|
608 |
* @return an <code>MidiFileFormat</code> object describing the MIDI file
|
|
609 |
* format
|
|
610 |
* @throws InvalidMidiDataException if the stream does not point to valid
|
|
611 |
* MIDI file data recognized by the system
|
|
612 |
* @throws IOException if an I/O exception occurs while accessing the
|
|
613 |
* stream
|
|
614 |
* @see #getMidiFileFormat(URL)
|
|
615 |
* @see #getMidiFileFormat(File)
|
|
616 |
* @see InputStream#markSupported
|
|
617 |
* @see InputStream#mark
|
|
618 |
*/
|
|
619 |
public static MidiFileFormat getMidiFileFormat(InputStream stream)
|
|
620 |
throws InvalidMidiDataException, IOException {
|
|
621 |
|
|
622 |
List providers = getMidiFileReaders();
|
|
623 |
MidiFileFormat format = null;
|
|
624 |
|
|
625 |
for(int i = 0; i < providers.size(); i++) {
|
|
626 |
MidiFileReader reader = (MidiFileReader) providers.get(i);
|
|
627 |
try {
|
|
628 |
format = reader.getMidiFileFormat( stream ); // throws IOException
|
|
629 |
break;
|
|
630 |
} catch (InvalidMidiDataException e) {
|
|
631 |
continue;
|
|
632 |
}
|
|
633 |
}
|
|
634 |
|
|
635 |
if( format==null ) {
|
|
636 |
throw new InvalidMidiDataException("input stream is not a supported file type");
|
|
637 |
} else {
|
|
638 |
return format;
|
|
639 |
}
|
|
640 |
}
|
|
641 |
|
|
642 |
|
|
643 |
/**
|
|
644 |
* Obtains the MIDI file format of the data in the specified URL. The URL
|
|
645 |
* must point to valid MIDI file data for a file type recognized
|
|
646 |
* by the system.
|
|
647 |
* <p>
|
|
648 |
* This operation can only succeed for files of a type which can be parsed
|
|
649 |
* by an installed file reader. It may fail with an InvalidMidiDataException
|
|
650 |
* even for valid files if no compatible file reader is installed. It
|
|
651 |
* will also fail with an InvalidMidiDataException if a compatible file reader
|
|
652 |
* is installed, but encounters errors while determining the file format.
|
|
653 |
*
|
|
654 |
* @param url the URL from which file format information should be
|
|
655 |
* extracted
|
|
656 |
* @return a <code>MidiFileFormat</code> object describing the MIDI file
|
|
657 |
* format
|
|
658 |
* @throws InvalidMidiDataException if the URL does not point to valid MIDI
|
|
659 |
* file data recognized by the system
|
|
660 |
* @throws IOException if an I/O exception occurs while accessing the URL
|
|
661 |
*
|
|
662 |
* @see #getMidiFileFormat(InputStream)
|
|
663 |
* @see #getMidiFileFormat(File)
|
|
664 |
*/
|
|
665 |
public static MidiFileFormat getMidiFileFormat(URL url)
|
|
666 |
throws InvalidMidiDataException, IOException {
|
|
667 |
|
|
668 |
List providers = getMidiFileReaders();
|
|
669 |
MidiFileFormat format = null;
|
|
670 |
|
|
671 |
for(int i = 0; i < providers.size(); i++) {
|
|
672 |
MidiFileReader reader = (MidiFileReader) providers.get(i);
|
|
673 |
try {
|
|
674 |
format = reader.getMidiFileFormat( url ); // throws IOException
|
|
675 |
break;
|
|
676 |
} catch (InvalidMidiDataException e) {
|
|
677 |
continue;
|
|
678 |
}
|
|
679 |
}
|
|
680 |
|
|
681 |
if( format==null ) {
|
|
682 |
throw new InvalidMidiDataException("url is not a supported file type");
|
|
683 |
} else {
|
|
684 |
return format;
|
|
685 |
}
|
|
686 |
}
|
|
687 |
|
|
688 |
|
|
689 |
/**
|
|
690 |
* Obtains the MIDI file format of the specified <code>File</code>. The
|
|
691 |
* <code>File</code> must point to valid MIDI file data for a file type
|
|
692 |
* recognized by the system.
|
|
693 |
* <p>
|
|
694 |
* This operation can only succeed for files of a type which can be parsed
|
|
695 |
* by an installed file reader. It may fail with an InvalidMidiDataException
|
|
696 |
* even for valid files if no compatible file reader is installed. It
|
|
697 |
* will also fail with an InvalidMidiDataException if a compatible file reader
|
|
698 |
* is installed, but encounters errors while determining the file format.
|
|
699 |
*
|
|
700 |
* @param file the <code>File</code> from which file format information
|
|
701 |
* should be extracted
|
|
702 |
* @return a <code>MidiFileFormat</code> object describing the MIDI file
|
|
703 |
* format
|
|
704 |
* @throws InvalidMidiDataException if the <code>File</code> does not point
|
|
705 |
* to valid MIDI file data recognized by the system
|
|
706 |
* @throws IOException if an I/O exception occurs while accessing the file
|
|
707 |
*
|
|
708 |
* @see #getMidiFileFormat(InputStream)
|
|
709 |
* @see #getMidiFileFormat(URL)
|
|
710 |
*/
|
|
711 |
public static MidiFileFormat getMidiFileFormat(File file)
|
|
712 |
throws InvalidMidiDataException, IOException {
|
|
713 |
|
|
714 |
List providers = getMidiFileReaders();
|
|
715 |
MidiFileFormat format = null;
|
|
716 |
|
|
717 |
for(int i = 0; i < providers.size(); i++) {
|
|
718 |
MidiFileReader reader = (MidiFileReader) providers.get(i);
|
|
719 |
try {
|
|
720 |
format = reader.getMidiFileFormat( file ); // throws IOException
|
|
721 |
break;
|
|
722 |
} catch (InvalidMidiDataException e) {
|
|
723 |
continue;
|
|
724 |
}
|
|
725 |
}
|
|
726 |
|
|
727 |
if( format==null ) {
|
|
728 |
throw new InvalidMidiDataException("file is not a supported file type");
|
|
729 |
} else {
|
|
730 |
return format;
|
|
731 |
}
|
|
732 |
}
|
|
733 |
|
|
734 |
|
|
735 |
/**
|
|
736 |
* Obtains a MIDI sequence from the specified input stream. The stream must
|
|
737 |
* point to valid MIDI file data for a file type recognized
|
|
738 |
* by the system.
|
|
739 |
* <p>
|
|
740 |
* This method and/or the code it invokes may need to read some data
|
|
741 |
* from the stream to determine whether
|
|
742 |
* its data format is supported. The implementation may therefore
|
|
743 |
* need to mark the stream, read enough data to determine whether it is in
|
|
744 |
* a supported format, and reset the stream's read pointer to its original
|
|
745 |
* position. If the input stream does not permit this set of operations,
|
|
746 |
* this method may fail with an <code>IOException</code>.
|
|
747 |
* <p>
|
|
748 |
* This operation can only succeed for files of a type which can be parsed
|
|
749 |
* by an installed file reader. It may fail with an InvalidMidiDataException
|
|
750 |
* even for valid files if no compatible file reader is installed. It
|
|
751 |
* will also fail with an InvalidMidiDataException if a compatible file reader
|
|
752 |
* is installed, but encounters errors while constructing the <code>Sequence</code>
|
|
753 |
* object from the file data.
|
|
754 |
*
|
|
755 |
* @param stream the input stream from which the <code>Sequence</code>
|
|
756 |
* should be constructed
|
|
757 |
* @return a <code>Sequence</code> object based on the MIDI file data
|
|
758 |
* contained in the input stream
|
|
759 |
* @throws InvalidMidiDataException if the stream does not point to
|
|
760 |
* valid MIDI file data recognized by the system
|
|
761 |
* @throws IOException if an I/O exception occurs while accessing the
|
|
762 |
* stream
|
|
763 |
* @see InputStream#markSupported
|
|
764 |
* @see InputStream#mark
|
|
765 |
*/
|
|
766 |
public static Sequence getSequence(InputStream stream)
|
|
767 |
throws InvalidMidiDataException, IOException {
|
|
768 |
|
|
769 |
List providers = getMidiFileReaders();
|
|
770 |
Sequence sequence = null;
|
|
771 |
|
|
772 |
for(int i = 0; i < providers.size(); i++) {
|
|
773 |
MidiFileReader reader = (MidiFileReader) providers.get(i);
|
|
774 |
try {
|
|
775 |
sequence = reader.getSequence( stream ); // throws IOException
|
|
776 |
break;
|
|
777 |
} catch (InvalidMidiDataException e) {
|
|
778 |
continue;
|
|
779 |
}
|
|
780 |
}
|
|
781 |
|
|
782 |
if( sequence==null ) {
|
|
783 |
throw new InvalidMidiDataException("could not get sequence from input stream");
|
|
784 |
} else {
|
|
785 |
return sequence;
|
|
786 |
}
|
|
787 |
}
|
|
788 |
|
|
789 |
|
|
790 |
/**
|
|
791 |
* Obtains a MIDI sequence from the specified URL. The URL must
|
|
792 |
* point to valid MIDI file data for a file type recognized
|
|
793 |
* by the system.
|
|
794 |
* <p>
|
|
795 |
* This operation can only succeed for files of a type which can be parsed
|
|
796 |
* by an installed file reader. It may fail with an InvalidMidiDataException
|
|
797 |
* even for valid files if no compatible file reader is installed. It
|
|
798 |
* will also fail with an InvalidMidiDataException if a compatible file reader
|
|
799 |
* is installed, but encounters errors while constructing the <code>Sequence</code>
|
|
800 |
* object from the file data.
|
|
801 |
*
|
|
802 |
* @param url the URL from which the <code>Sequence</code> should be
|
|
803 |
* constructed
|
|
804 |
* @return a <code>Sequence</code> object based on the MIDI file data
|
|
805 |
* pointed to by the URL
|
|
806 |
* @throws InvalidMidiDataException if the URL does not point to valid MIDI
|
|
807 |
* file data recognized by the system
|
|
808 |
* @throws IOException if an I/O exception occurs while accessing the URL
|
|
809 |
*/
|
|
810 |
public static Sequence getSequence(URL url)
|
|
811 |
throws InvalidMidiDataException, IOException {
|
|
812 |
|
|
813 |
List providers = getMidiFileReaders();
|
|
814 |
Sequence sequence = null;
|
|
815 |
|
|
816 |
for(int i = 0; i < providers.size(); i++) {
|
|
817 |
MidiFileReader reader = (MidiFileReader) providers.get(i);
|
|
818 |
try {
|
|
819 |
sequence = reader.getSequence( url ); // throws IOException
|
|
820 |
break;
|
|
821 |
} catch (InvalidMidiDataException e) {
|
|
822 |
continue;
|
|
823 |
}
|
|
824 |
}
|
|
825 |
|
|
826 |
if( sequence==null ) {
|
|
827 |
throw new InvalidMidiDataException("could not get sequence from URL");
|
|
828 |
} else {
|
|
829 |
return sequence;
|
|
830 |
}
|
|
831 |
}
|
|
832 |
|
|
833 |
|
|
834 |
/**
|
|
835 |
* Obtains a MIDI sequence from the specified <code>File</code>.
|
|
836 |
* The <code>File</code> must point to valid MIDI file data
|
|
837 |
* for a file type recognized by the system.
|
|
838 |
* <p>
|
|
839 |
* This operation can only succeed for files of a type which can be parsed
|
|
840 |
* by an installed file reader. It may fail with an InvalidMidiDataException
|
|
841 |
* even for valid files if no compatible file reader is installed. It
|
|
842 |
* will also fail with an InvalidMidiDataException if a compatible file reader
|
|
843 |
* is installed, but encounters errors while constructing the <code>Sequence</code>
|
|
844 |
* object from the file data.
|
|
845 |
*
|
|
846 |
* @param file the <code>File</code> from which the <code>Sequence</code>
|
|
847 |
* should be constructed
|
|
848 |
* @return a <code>Sequence</code> object based on the MIDI file data
|
|
849 |
* pointed to by the File
|
|
850 |
* @throws InvalidMidiDataException if the File does not point to valid MIDI
|
|
851 |
* file data recognized by the system
|
|
852 |
* @throws IOException if an I/O exception occurs
|
|
853 |
*/
|
|
854 |
public static Sequence getSequence(File file)
|
|
855 |
throws InvalidMidiDataException, IOException {
|
|
856 |
|
|
857 |
List providers = getMidiFileReaders();
|
|
858 |
Sequence sequence = null;
|
|
859 |
|
|
860 |
for(int i = 0; i < providers.size(); i++) {
|
|
861 |
MidiFileReader reader = (MidiFileReader) providers.get(i);
|
|
862 |
try {
|
|
863 |
sequence = reader.getSequence( file ); // throws IOException
|
|
864 |
break;
|
|
865 |
} catch (InvalidMidiDataException e) {
|
|
866 |
continue;
|
|
867 |
}
|
|
868 |
}
|
|
869 |
|
|
870 |
if( sequence==null ) {
|
|
871 |
throw new InvalidMidiDataException("could not get sequence from file");
|
|
872 |
} else {
|
|
873 |
return sequence;
|
|
874 |
}
|
|
875 |
}
|
|
876 |
|
|
877 |
|
|
878 |
/**
|
|
879 |
* Obtains the set of MIDI file types for which file writing support is
|
|
880 |
* provided by the system.
|
|
881 |
* @return array of unique file types. If no file types are supported,
|
|
882 |
* an array of length 0 is returned.
|
|
883 |
*/
|
|
884 |
public static int[] getMidiFileTypes() {
|
|
885 |
|
|
886 |
List providers = getMidiFileWriters();
|
|
887 |
Set allTypes = new HashSet();
|
|
888 |
|
|
889 |
// gather from all the providers
|
|
890 |
|
|
891 |
for (int i = 0; i < providers.size(); i++ ) {
|
|
892 |
MidiFileWriter writer = (MidiFileWriter) providers.get(i);
|
|
893 |
int[] types = writer.getMidiFileTypes();
|
|
894 |
for (int j = 0; j < types.length; j++ ) {
|
|
895 |
allTypes.add(new Integer(types[j]));
|
|
896 |
}
|
|
897 |
}
|
|
898 |
int resultTypes[] = new int[allTypes.size()];
|
|
899 |
int index = 0;
|
|
900 |
Iterator iterator = allTypes.iterator();
|
|
901 |
while (iterator.hasNext()) {
|
|
902 |
Integer integer = (Integer) iterator.next();
|
|
903 |
resultTypes[index++] = integer.intValue();
|
|
904 |
}
|
|
905 |
return resultTypes;
|
|
906 |
}
|
|
907 |
|
|
908 |
|
|
909 |
/**
|
|
910 |
* Indicates whether file writing support for the specified MIDI file type
|
|
911 |
* is provided by the system.
|
|
912 |
* @param fileType the file type for which write capabilities are queried
|
|
913 |
* @return <code>true</code> if the file type is supported,
|
|
914 |
* otherwise <code>false</code>
|
|
915 |
*/
|
|
916 |
public static boolean isFileTypeSupported(int fileType) {
|
|
917 |
|
|
918 |
List providers = getMidiFileWriters();
|
|
919 |
|
|
920 |
for (int i = 0; i < providers.size(); i++ ) {
|
|
921 |
MidiFileWriter writer = (MidiFileWriter) providers.get(i);
|
|
922 |
if( writer.isFileTypeSupported(fileType)) {
|
|
923 |
return true;
|
|
924 |
}
|
|
925 |
}
|
|
926 |
return false;
|
|
927 |
}
|
|
928 |
|
|
929 |
|
|
930 |
/**
|
|
931 |
* Obtains the set of MIDI file types that the system can write from the
|
|
932 |
* sequence specified.
|
|
933 |
* @param sequence the sequence for which MIDI file type support
|
|
934 |
* is queried
|
|
935 |
* @return the set of unique supported file types. If no file types are supported,
|
|
936 |
* returns an array of length 0.
|
|
937 |
*/
|
|
938 |
public static int[] getMidiFileTypes(Sequence sequence) {
|
|
939 |
|
|
940 |
List providers = getMidiFileWriters();
|
|
941 |
Set allTypes = new HashSet();
|
|
942 |
|
|
943 |
// gather from all the providers
|
|
944 |
|
|
945 |
for (int i = 0; i < providers.size(); i++ ) {
|
|
946 |
MidiFileWriter writer = (MidiFileWriter) providers.get(i);
|
|
947 |
int[] types = writer.getMidiFileTypes(sequence);
|
|
948 |
for (int j = 0; j < types.length; j++ ) {
|
|
949 |
allTypes.add(new Integer(types[j]));
|
|
950 |
}
|
|
951 |
}
|
|
952 |
int resultTypes[] = new int[allTypes.size()];
|
|
953 |
int index = 0;
|
|
954 |
Iterator iterator = allTypes.iterator();
|
|
955 |
while (iterator.hasNext()) {
|
|
956 |
Integer integer = (Integer) iterator.next();
|
|
957 |
resultTypes[index++] = integer.intValue();
|
|
958 |
}
|
|
959 |
return resultTypes;
|
|
960 |
}
|
|
961 |
|
|
962 |
|
|
963 |
/**
|
|
964 |
* Indicates whether a MIDI file of the file type specified can be written
|
|
965 |
* from the sequence indicated.
|
|
966 |
* @param fileType the file type for which write capabilities
|
|
967 |
* are queried
|
|
968 |
* @param sequence the sequence for which file writing support is queried
|
|
969 |
* @return <code>true</code> if the file type is supported for this
|
|
970 |
* sequence, otherwise <code>false</code>
|
|
971 |
*/
|
|
972 |
public static boolean isFileTypeSupported(int fileType, Sequence sequence) {
|
|
973 |
|
|
974 |
List providers = getMidiFileWriters();
|
|
975 |
|
|
976 |
for (int i = 0; i < providers.size(); i++ ) {
|
|
977 |
MidiFileWriter writer = (MidiFileWriter) providers.get(i);
|
|
978 |
if( writer.isFileTypeSupported(fileType,sequence)) {
|
|
979 |
return true;
|
|
980 |
}
|
|
981 |
}
|
|
982 |
return false;
|
|
983 |
}
|
|
984 |
|
|
985 |
|
|
986 |
/**
|
|
987 |
* Writes a stream of bytes representing a file of the MIDI file type
|
|
988 |
* indicated to the output stream provided.
|
|
989 |
* @param in sequence containing MIDI data to be written to the file
|
|
990 |
* @param fileType the file type of the file to be written to the output stream
|
|
991 |
* @param out stream to which the file data should be written
|
|
992 |
* @return the number of bytes written to the output stream
|
|
993 |
* @throws IOException if an I/O exception occurs
|
|
994 |
* @throws IllegalArgumentException if the file format is not supported by
|
|
995 |
* the system
|
|
996 |
* @see #isFileTypeSupported(int, Sequence)
|
|
997 |
* @see #getMidiFileTypes(Sequence)
|
|
998 |
*/
|
|
999 |
public static int write(Sequence in, int fileType, OutputStream out) throws IOException {
|
|
1000 |
|
|
1001 |
List providers = getMidiFileWriters();
|
|
1002 |
//$$fb 2002-04-17: Fix for 4635287: Standard MidiFileWriter cannot write empty Sequences
|
|
1003 |
int bytesWritten = -2;
|
|
1004 |
|
|
1005 |
for (int i = 0; i < providers.size(); i++ ) {
|
|
1006 |
MidiFileWriter writer = (MidiFileWriter) providers.get(i);
|
|
1007 |
if( writer.isFileTypeSupported( fileType, in ) ) {
|
|
1008 |
|
|
1009 |
bytesWritten = writer.write(in, fileType, out);
|
|
1010 |
break;
|
|
1011 |
}
|
|
1012 |
}
|
|
1013 |
if (bytesWritten == -2) {
|
|
1014 |
throw new IllegalArgumentException("MIDI file type is not supported");
|
|
1015 |
}
|
|
1016 |
return bytesWritten;
|
|
1017 |
}
|
|
1018 |
|
|
1019 |
|
|
1020 |
/**
|
|
1021 |
* Writes a stream of bytes representing a file of the MIDI file type
|
|
1022 |
* indicated to the external file provided.
|
|
1023 |
* @param in sequence containing MIDI data to be written to the file
|
|
1024 |
* @param type the file type of the file to be written to the output stream
|
|
1025 |
* @param out external file to which the file data should be written
|
|
1026 |
* @return the number of bytes written to the file
|
|
1027 |
* @throws IOException if an I/O exception occurs
|
|
1028 |
* @throws IllegalArgumentException if the file type is not supported by
|
|
1029 |
* the system
|
|
1030 |
* @see #isFileTypeSupported(int, Sequence)
|
|
1031 |
* @see #getMidiFileTypes(Sequence)
|
|
1032 |
*/
|
|
1033 |
public static int write(Sequence in, int type, File out) throws IOException {
|
|
1034 |
|
|
1035 |
List providers = getMidiFileWriters();
|
|
1036 |
//$$fb 2002-04-17: Fix for 4635287: Standard MidiFileWriter cannot write empty Sequences
|
|
1037 |
int bytesWritten = -2;
|
|
1038 |
|
|
1039 |
for (int i = 0; i < providers.size(); i++ ) {
|
|
1040 |
MidiFileWriter writer = (MidiFileWriter) providers.get(i);
|
|
1041 |
if( writer.isFileTypeSupported( type, in ) ) {
|
|
1042 |
|
|
1043 |
bytesWritten = writer.write(in, type, out);
|
|
1044 |
break;
|
|
1045 |
}
|
|
1046 |
}
|
|
1047 |
if (bytesWritten == -2) {
|
|
1048 |
throw new IllegalArgumentException("MIDI file type is not supported");
|
|
1049 |
}
|
|
1050 |
return bytesWritten;
|
|
1051 |
}
|
|
1052 |
|
|
1053 |
|
|
1054 |
|
|
1055 |
// HELPER METHODS
|
|
1056 |
|
|
1057 |
private static List getMidiDeviceProviders() {
|
|
1058 |
return getProviders(MidiDeviceProvider.class);
|
|
1059 |
}
|
|
1060 |
|
|
1061 |
|
|
1062 |
private static List getSoundbankReaders() {
|
|
1063 |
return getProviders(SoundbankReader.class);
|
|
1064 |
}
|
|
1065 |
|
|
1066 |
|
|
1067 |
private static List getMidiFileWriters() {
|
|
1068 |
return getProviders(MidiFileWriter.class);
|
|
1069 |
}
|
|
1070 |
|
|
1071 |
|
|
1072 |
private static List getMidiFileReaders() {
|
|
1073 |
return getProviders(MidiFileReader.class);
|
|
1074 |
}
|
|
1075 |
|
|
1076 |
|
|
1077 |
/** Attempts to locate and return a default MidiDevice of the specified
|
|
1078 |
* type.
|
|
1079 |
*
|
|
1080 |
* This method wraps {@link #getDefaultDevice}. It catches the
|
|
1081 |
* <code>IllegalArgumentException</code> thrown by
|
|
1082 |
* <code>getDefaultDevice</code> and instead throws a
|
|
1083 |
* <code>MidiUnavailableException</code>, with the catched
|
|
1084 |
* exception chained.
|
|
1085 |
*
|
|
1086 |
* @param deviceClass The requested device type, one of Synthesizer.class,
|
|
1087 |
* Sequencer.class, Receiver.class or Transmitter.class.
|
|
1088 |
* @throws MidiUnavalableException on failure.
|
|
1089 |
*/
|
|
1090 |
private static MidiDevice getDefaultDeviceWrapper(Class deviceClass)
|
|
1091 |
throws MidiUnavailableException{
|
|
1092 |
try {
|
|
1093 |
return getDefaultDevice(deviceClass);
|
|
1094 |
} catch (IllegalArgumentException iae) {
|
|
1095 |
MidiUnavailableException mae = new MidiUnavailableException();
|
|
1096 |
mae.initCause(iae);
|
|
1097 |
throw mae;
|
|
1098 |
}
|
|
1099 |
}
|
|
1100 |
|
|
1101 |
|
|
1102 |
/** Attempts to locate and return a default MidiDevice of the specified
|
|
1103 |
* type.
|
|
1104 |
*
|
|
1105 |
* @param deviceClass The requested device type, one of Synthesizer.class,
|
|
1106 |
* Sequencer.class, Receiver.class or Transmitter.class.
|
|
1107 |
* @throws IllegalArgumentException on failure.
|
|
1108 |
*/
|
|
1109 |
private static MidiDevice getDefaultDevice(Class deviceClass) {
|
|
1110 |
List providers = getMidiDeviceProviders();
|
|
1111 |
String providerClassName = JDK13Services.getDefaultProviderClassName(deviceClass);
|
|
1112 |
String instanceName = JDK13Services.getDefaultInstanceName(deviceClass);
|
|
1113 |
MidiDevice device;
|
|
1114 |
|
|
1115 |
if (providerClassName != null) {
|
|
1116 |
MidiDeviceProvider defaultProvider = getNamedProvider(providerClassName, providers);
|
|
1117 |
if (defaultProvider != null) {
|
|
1118 |
if (instanceName != null) {
|
|
1119 |
device = getNamedDevice(instanceName, defaultProvider, deviceClass);
|
|
1120 |
if (device != null) {
|
|
1121 |
return device;
|
|
1122 |
}
|
|
1123 |
}
|
|
1124 |
device = getFirstDevice(defaultProvider, deviceClass);
|
|
1125 |
if (device != null) {
|
|
1126 |
return device;
|
|
1127 |
}
|
|
1128 |
}
|
|
1129 |
}
|
|
1130 |
|
|
1131 |
/* Provider class not specified or cannot be found, or
|
|
1132 |
provider class specified, and no appropriate device available or
|
|
1133 |
provider class and instance specified and instance cannot be found or is not appropriate */
|
|
1134 |
if (instanceName != null) {
|
|
1135 |
device = getNamedDevice(instanceName, providers, deviceClass);
|
|
1136 |
if (device != null) {
|
|
1137 |
return device;
|
|
1138 |
}
|
|
1139 |
}
|
|
1140 |
|
|
1141 |
/* No default are specified, or if something is specified, everything
|
|
1142 |
failed. */
|
|
1143 |
device = getFirstDevice(providers, deviceClass);
|
|
1144 |
if (device != null) {
|
|
1145 |
return device;
|
|
1146 |
}
|
|
1147 |
throw new IllegalArgumentException("Requested device not installed");
|
|
1148 |
}
|
|
1149 |
|
|
1150 |
|
|
1151 |
|
|
1152 |
/** Return a MidiDeviceProcider of a given class from the list of
|
|
1153 |
MidiDeviceProviders.
|
|
1154 |
|
|
1155 |
@param providerClassName The class name of the provider to be returned.
|
|
1156 |
@param provider The list of MidiDeviceProviders that is searched.
|
|
1157 |
@return A MidiDeviceProvider of the requested class, or null if none
|
|
1158 |
is found.
|
|
1159 |
*/
|
|
1160 |
private static MidiDeviceProvider getNamedProvider(String providerClassName, List providers) {
|
|
1161 |
for(int i = 0; i < providers.size(); i++) {
|
|
1162 |
MidiDeviceProvider provider = (MidiDeviceProvider) providers.get(i);
|
|
1163 |
if (provider.getClass().getName().equals(providerClassName)) {
|
|
1164 |
return provider;
|
|
1165 |
}
|
|
1166 |
}
|
|
1167 |
return null;
|
|
1168 |
}
|
|
1169 |
|
|
1170 |
|
|
1171 |
/** Return a MidiDevice with a given name from a given MidiDeviceProvider.
|
|
1172 |
@param deviceName The name of the MidiDevice to be returned.
|
|
1173 |
@param provider The MidiDeviceProvider to check for MidiDevices.
|
|
1174 |
@param deviceClass The requested device type, one of Synthesizer.class,
|
|
1175 |
Sequencer.class, Receiver.class or Transmitter.class.
|
|
1176 |
|
|
1177 |
@return A MidiDevice matching the requirements, or null if none is found.
|
|
1178 |
*/
|
|
1179 |
private static MidiDevice getNamedDevice(String deviceName,
|
|
1180 |
MidiDeviceProvider provider,
|
|
1181 |
Class deviceClass) {
|
|
1182 |
MidiDevice device;
|
|
1183 |
// try to get MIDI port
|
|
1184 |
device = getNamedDevice(deviceName, provider, deviceClass,
|
|
1185 |
false, false);
|
|
1186 |
if (device != null) {
|
|
1187 |
return device;
|
|
1188 |
}
|
|
1189 |
|
|
1190 |
if (deviceClass == Receiver.class) {
|
|
1191 |
// try to get Synthesizer
|
|
1192 |
device = getNamedDevice(deviceName, provider, deviceClass,
|
|
1193 |
true, false);
|
|
1194 |
if (device != null) {
|
|
1195 |
return device;
|
|
1196 |
}
|
|
1197 |
}
|
|
1198 |
|
|
1199 |
return null;
|
|
1200 |
}
|
|
1201 |
|
|
1202 |
|
|
1203 |
/** Return a MidiDevice with a given name from a given MidiDeviceProvider.
|
|
1204 |
@param deviceName The name of the MidiDevice to be returned.
|
|
1205 |
@param provider The MidiDeviceProvider to check for MidiDevices.
|
|
1206 |
@param deviceClass The requested device type, one of Synthesizer.class,
|
|
1207 |
Sequencer.class, Receiver.class or Transmitter.class.
|
|
1208 |
|
|
1209 |
@return A MidiDevice matching the requirements, or null if none is found.
|
|
1210 |
*/
|
|
1211 |
private static MidiDevice getNamedDevice(String deviceName,
|
|
1212 |
MidiDeviceProvider provider,
|
|
1213 |
Class deviceClass,
|
|
1214 |
boolean allowSynthesizer,
|
|
1215 |
boolean allowSequencer) {
|
|
1216 |
MidiDevice.Info[] infos = provider.getDeviceInfo();
|
|
1217 |
for (int i = 0; i < infos.length; i++) {
|
|
1218 |
if (infos[i].getName().equals(deviceName)) {
|
|
1219 |
MidiDevice device = provider.getDevice(infos[i]);
|
|
1220 |
if (isAppropriateDevice(device, deviceClass,
|
|
1221 |
allowSynthesizer, allowSequencer)) {
|
|
1222 |
return device;
|
|
1223 |
}
|
|
1224 |
}
|
|
1225 |
}
|
|
1226 |
return null;
|
|
1227 |
}
|
|
1228 |
|
|
1229 |
|
|
1230 |
/** Return a MidiDevice with a given name from a list of
|
|
1231 |
MidiDeviceProviders.
|
|
1232 |
@param deviceName The name of the MidiDevice to be returned.
|
|
1233 |
@param providers The List of MidiDeviceProviders to check for
|
|
1234 |
MidiDevices.
|
|
1235 |
@param deviceClass The requested device type, one of Synthesizer.class,
|
|
1236 |
Sequencer.class, Receiver.class or Transmitter.class.
|
|
1237 |
@return A Mixer matching the requirements, or null if none is found.
|
|
1238 |
*/
|
|
1239 |
private static MidiDevice getNamedDevice(String deviceName,
|
|
1240 |
List providers,
|
|
1241 |
Class deviceClass) {
|
|
1242 |
MidiDevice device;
|
|
1243 |
// try to get MIDI port
|
|
1244 |
device = getNamedDevice(deviceName, providers, deviceClass,
|
|
1245 |
false, false);
|
|
1246 |
if (device != null) {
|
|
1247 |
return device;
|
|
1248 |
}
|
|
1249 |
|
|
1250 |
if (deviceClass == Receiver.class) {
|
|
1251 |
// try to get Synthesizer
|
|
1252 |
device = getNamedDevice(deviceName, providers, deviceClass,
|
|
1253 |
true, false);
|
|
1254 |
if (device != null) {
|
|
1255 |
return device;
|
|
1256 |
}
|
|
1257 |
}
|
|
1258 |
|
|
1259 |
return null;
|
|
1260 |
}
|
|
1261 |
|
|
1262 |
|
|
1263 |
/** Return a MidiDevice with a given name from a list of
|
|
1264 |
MidiDeviceProviders.
|
|
1265 |
@param deviceName The name of the MidiDevice to be returned.
|
|
1266 |
@param providers The List of MidiDeviceProviders to check for
|
|
1267 |
MidiDevices.
|
|
1268 |
@param deviceClass The requested device type, one of Synthesizer.class,
|
|
1269 |
Sequencer.class, Receiver.class or Transmitter.class.
|
|
1270 |
@return A Mixer matching the requirements, or null if none is found.
|
|
1271 |
*/
|
|
1272 |
private static MidiDevice getNamedDevice(String deviceName,
|
|
1273 |
List providers,
|
|
1274 |
Class deviceClass,
|
|
1275 |
boolean allowSynthesizer,
|
|
1276 |
boolean allowSequencer) {
|
|
1277 |
for(int i = 0; i < providers.size(); i++) {
|
|
1278 |
MidiDeviceProvider provider = (MidiDeviceProvider) providers.get(i);
|
|
1279 |
MidiDevice device = getNamedDevice(deviceName, provider,
|
|
1280 |
deviceClass,
|
|
1281 |
allowSynthesizer,
|
|
1282 |
allowSequencer);
|
|
1283 |
if (device != null) {
|
|
1284 |
return device;
|
|
1285 |
}
|
|
1286 |
}
|
|
1287 |
return null;
|
|
1288 |
}
|
|
1289 |
|
|
1290 |
|
|
1291 |
/** From a given MidiDeviceProvider, return the first appropriate device.
|
|
1292 |
@param provider The MidiDeviceProvider to check for MidiDevices.
|
|
1293 |
@param deviceClass The requested device type, one of Synthesizer.class,
|
|
1294 |
Sequencer.class, Receiver.class or Transmitter.class.
|
|
1295 |
@return A MidiDevice is considered appropriate, or null if no
|
|
1296 |
appropriate device is found.
|
|
1297 |
*/
|
|
1298 |
private static MidiDevice getFirstDevice(MidiDeviceProvider provider,
|
|
1299 |
Class deviceClass) {
|
|
1300 |
MidiDevice device;
|
|
1301 |
// try to get MIDI port
|
|
1302 |
device = getFirstDevice(provider, deviceClass,
|
|
1303 |
false, false);
|
|
1304 |
if (device != null) {
|
|
1305 |
return device;
|
|
1306 |
}
|
|
1307 |
|
|
1308 |
if (deviceClass == Receiver.class) {
|
|
1309 |
// try to get Synthesizer
|
|
1310 |
device = getFirstDevice(provider, deviceClass,
|
|
1311 |
true, false);
|
|
1312 |
if (device != null) {
|
|
1313 |
return device;
|
|
1314 |
}
|
|
1315 |
}
|
|
1316 |
|
|
1317 |
return null;
|
|
1318 |
}
|
|
1319 |
|
|
1320 |
|
|
1321 |
/** From a given MidiDeviceProvider, return the first appropriate device.
|
|
1322 |
@param provider The MidiDeviceProvider to check for MidiDevices.
|
|
1323 |
@param deviceClass The requested device type, one of Synthesizer.class,
|
|
1324 |
Sequencer.class, Receiver.class or Transmitter.class.
|
|
1325 |
@return A MidiDevice is considered appropriate, or null if no
|
|
1326 |
appropriate device is found.
|
|
1327 |
*/
|
|
1328 |
private static MidiDevice getFirstDevice(MidiDeviceProvider provider,
|
|
1329 |
Class deviceClass,
|
|
1330 |
boolean allowSynthesizer,
|
|
1331 |
boolean allowSequencer) {
|
|
1332 |
MidiDevice.Info[] infos = provider.getDeviceInfo();
|
|
1333 |
for (int j = 0; j < infos.length; j++) {
|
|
1334 |
MidiDevice device = provider.getDevice(infos[j]);
|
|
1335 |
if (isAppropriateDevice(device, deviceClass,
|
|
1336 |
allowSynthesizer, allowSequencer)) {
|
|
1337 |
return device;
|
|
1338 |
}
|
|
1339 |
}
|
|
1340 |
return null;
|
|
1341 |
}
|
|
1342 |
|
|
1343 |
|
|
1344 |
/** From a List of MidiDeviceProviders, return the first appropriate
|
|
1345 |
MidiDevice.
|
|
1346 |
@param providers The List of MidiDeviceProviders to search.
|
|
1347 |
@param deviceClass The requested device type, one of Synthesizer.class,
|
|
1348 |
Sequencer.class, Receiver.class or Transmitter.class.
|
|
1349 |
@return A MidiDevice that is considered appropriate, or null
|
|
1350 |
if none is found.
|
|
1351 |
*/
|
|
1352 |
private static MidiDevice getFirstDevice(List providers,
|
|
1353 |
Class deviceClass) {
|
|
1354 |
MidiDevice device;
|
|
1355 |
// try to get MIDI port
|
|
1356 |
device = getFirstDevice(providers, deviceClass,
|
|
1357 |
false, false);
|
|
1358 |
if (device != null) {
|
|
1359 |
return device;
|
|
1360 |
}
|
|
1361 |
|
|
1362 |
if (deviceClass == Receiver.class) {
|
|
1363 |
// try to get Synthesizer
|
|
1364 |
device = getFirstDevice(providers, deviceClass,
|
|
1365 |
true, false);
|
|
1366 |
if (device != null) {
|
|
1367 |
return device;
|
|
1368 |
}
|
|
1369 |
}
|
|
1370 |
|
|
1371 |
return null;
|
|
1372 |
}
|
|
1373 |
|
|
1374 |
|
|
1375 |
/** From a List of MidiDeviceProviders, return the first appropriate
|
|
1376 |
MidiDevice.
|
|
1377 |
@param providers The List of MidiDeviceProviders to search.
|
|
1378 |
@param deviceClass The requested device type, one of Synthesizer.class,
|
|
1379 |
Sequencer.class, Receiver.class or Transmitter.class.
|
|
1380 |
@return A MidiDevice that is considered appropriate, or null
|
|
1381 |
if none is found.
|
|
1382 |
*/
|
|
1383 |
private static MidiDevice getFirstDevice(List providers,
|
|
1384 |
Class deviceClass,
|
|
1385 |
boolean allowSynthesizer,
|
|
1386 |
boolean allowSequencer) {
|
|
1387 |
for(int i = 0; i < providers.size(); i++) {
|
|
1388 |
MidiDeviceProvider provider = (MidiDeviceProvider) providers.get(i);
|
|
1389 |
MidiDevice device = getFirstDevice(provider, deviceClass,
|
|
1390 |
allowSynthesizer,
|
|
1391 |
allowSequencer);
|
|
1392 |
if (device != null) {
|
|
1393 |
return device;
|
|
1394 |
}
|
|
1395 |
}
|
|
1396 |
return null;
|
|
1397 |
}
|
|
1398 |
|
|
1399 |
|
|
1400 |
/** Checks if a MidiDevice is appropriate.
|
|
1401 |
If deviceClass is Synthesizer or Sequencer, a device implementing
|
|
1402 |
the respective interface is considered appropriate. If deviceClass
|
|
1403 |
is Receiver or Transmitter, a device is considered appropriate if
|
|
1404 |
it implements neither Synthesizer nor Transmitter, and if it can
|
|
1405 |
provide at least one Receiver or Transmitter, respectively.
|
|
1406 |
|
|
1407 |
@param device the MidiDevice to test
|
|
1408 |
@param allowSynthesizer if true, Synthesizers are considered
|
|
1409 |
appropriate. Otherwise only pure MidiDevices are considered
|
|
1410 |
appropriate (unless allowSequencer is true). This flag only has an
|
|
1411 |
effect for deviceClass Receiver and Transmitter. For other device
|
|
1412 |
classes (Sequencer and Synthesizer), this flag has no effect.
|
|
1413 |
@param allowSequencer if true, Sequencers are considered
|
|
1414 |
appropriate. Otherwise only pure MidiDevices are considered
|
|
1415 |
appropriate (unless allowSynthesizer is true). This flag only has an
|
|
1416 |
effect for deviceClass Receiver and Transmitter. For other device
|
|
1417 |
classes (Sequencer and Synthesizer), this flag has no effect.
|
|
1418 |
@return true if the device is considered appropriate according to the
|
|
1419 |
rules given above, false otherwise.
|
|
1420 |
*/
|
|
1421 |
private static boolean isAppropriateDevice(MidiDevice device,
|
|
1422 |
Class deviceClass,
|
|
1423 |
boolean allowSynthesizer,
|
|
1424 |
boolean allowSequencer) {
|
|
1425 |
if (deviceClass.isInstance(device)) {
|
|
1426 |
// This clause is for deviceClass being either Synthesizer
|
|
1427 |
// or Sequencer.
|
|
1428 |
return true;
|
|
1429 |
} else {
|
|
1430 |
// Now the case that deviceClass is Transmitter or
|
|
1431 |
// Receiver. If neither allowSynthesizer nor allowSequencer is
|
|
1432 |
// true, we require device instances to be
|
|
1433 |
// neither Synthesizer nor Sequencer, since we only want
|
|
1434 |
// devices representing MIDI ports.
|
|
1435 |
// Otherwise, the respective type is accepted, too
|
|
1436 |
if ( (! (device instanceof Sequencer) &&
|
|
1437 |
! (device instanceof Synthesizer) ) ||
|
|
1438 |
((device instanceof Sequencer) && allowSequencer) ||
|
|
1439 |
((device instanceof Synthesizer) && allowSynthesizer)) {
|
|
1440 |
// And of cource, the device has to be able to provide
|
|
1441 |
// Receivers or Transmitters.
|
|
1442 |
if ((deviceClass == Receiver.class &&
|
|
1443 |
device.getMaxReceivers() != 0) ||
|
|
1444 |
(deviceClass == Transmitter.class &&
|
|
1445 |
device.getMaxTransmitters() != 0)) {
|
|
1446 |
return true;
|
|
1447 |
}
|
|
1448 |
}
|
|
1449 |
}
|
|
1450 |
return false;
|
|
1451 |
}
|
|
1452 |
|
|
1453 |
|
|
1454 |
/**
|
|
1455 |
* Obtains the set of services currently installed on the system
|
|
1456 |
* using sun.misc.Service, the SPI mechanism in 1.3.
|
|
1457 |
* @return a List of instances of providers for the requested service.
|
|
1458 |
* If no providers are available, a List of length 0 will be returned.
|
|
1459 |
*/
|
|
1460 |
private static List getProviders(Class providerClass) {
|
|
1461 |
return JDK13Services.getProviders(providerClass);
|
|
1462 |
}
|
|
1463 |
}
|