Source Code Cross Referenced for DirectMIDIControl.java in  » 6.0-JDK-Modules » j2me » com » sun » mmedia » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » com.sun.mmedia 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * 
003:         * Copyright  1990-2007 Sun Microsystems, Inc. All Rights Reserved.
004:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
005:         * 
006:         * This program is free software; you can redistribute it and/or
007:         * modify it under the terms of the GNU General Public License version
008:         * 2 only, as published by the Free Software Foundation.
009:         * 
010:         * This program is distributed in the hope that it will be useful, but
011:         * WITHOUT ANY WARRANTY; without even the implied warranty of
012:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
013:         * General Public License version 2 for more details (a copy is
014:         * included at /legal/license.txt).
015:         * 
016:         * You should have received a copy of the GNU General Public License
017:         * version 2 along with this work; if not, write to the Free Software
018:         * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
019:         * 02110-1301 USA
020:         * 
021:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
022:         * Clara, CA 95054 or visit www.sun.com if you need additional
023:         * information or have any questions.
024:         */
025:
026:        package com.sun.mmedia;
027:
028:        import com.sun.mmedia.DirectPlayer;
029:
030:        import javax.microedition.media.*;
031:        import javax.microedition.media.control.*;
032:
033:        /**
034:         * Implement all of MIDI related controls like :
035:         * 	MIDIControl, RateControl, PitchControl, TempoControl
036:         */
037:        class DirectMIDIControl implements  MIDIControl, RateControl,
038:                PitchControl, TempoControl, DirectControls {
039:
040:            // MIDIControl
041:            private native void nSetChannelVolume(int handle, int channel,
042:                    int volume);
043:
044:            private native int nGetChannelVolume(int handle, int channel);
045:
046:            private native void nSetProgram(int handle, int channel, int bank,
047:                    int program);
048:
049:            private native void nShortMidiEvent(int handle, int type,
050:                    int data1, int data2);
051:
052:            private native int nLongMidiEvent(int handle, byte[] data,
053:                    int offset, int length);
054:
055:            // RateControl
056:            private native int nGetMaxRate(int handle);
057:
058:            private native int nGetMinRate(int handle);
059:
060:            private native int nSetRate(int handle, int rate);
061:
062:            private native int nGetRate(int handle);
063:
064:            // PitchControl
065:            private native int nGetMaxPitch(int handle);
066:
067:            private native int nGetMinPitch(int handle);
068:
069:            private native int nSetPitch(int handle, int pitch);
070:
071:            private native int nGetPitch(int handle);
072:
073:            // TempoControl    
074:            private native int nGetTempo(int handle);
075:
076:            private native int nSetTempo(int handle, int tempo);
077:
078:            // Bank Query
079:            private native boolean nIsBankQuerySupported(int handle);
080:
081:            private native int nGetBankList(int handle, boolean custom,
082:                    int[] list);
083:
084:            private native int nGetKeyName(int handle, int bank, int prog,
085:                    int key, byte[] keyname);
086:
087:            private native int nGetProgramName(int handle, int bank, int prog,
088:                    byte[] progname);
089:
090:            private native int nGetProgramList(int handle, int bank,
091:                    int[] proglist);
092:
093:            private native int nGetProgram(int handle, int channel,
094:                    int[] program);
095:
096:            DirectMIDIControl(DirectPlayer p) {
097:                _player = p;
098:            }
099:
100:            // Private //////////////////////////////////////////////////////////
101:
102:            private void checkState() {
103:                if (_player.state < Player.PREFETCHED) {
104:                    throw new IllegalStateException("Not prefetched");
105:                }
106:            }
107:
108:            private void checkChannel(int channel) {
109:                if (channel < 0 || channel > 15) {
110:                    throw new IllegalArgumentException(
111:                            "Channel is out of range");
112:                }
113:            }
114:
115:            private void checkVolume(int volume) {
116:                if (volume < 0 || volume > 127) {
117:                    throw new IllegalArgumentException("Volume is out of range");
118:                }
119:            }
120:
121:            private void checkType(int type) {
122:                if (type < 0x80 || type > 0xFF || type == 0xF0 || type == 0xF7) {
123:                    throw new IllegalArgumentException("Type is out of range");
124:                }
125:            }
126:
127:            private void checkData(int data) {
128:                if (data < 0 || data > 127) {
129:                    throw new IllegalArgumentException("Data is out of range");
130:                }
131:            }
132:
133:            private void checkLongMidiEvent(byte[] data, int offset, int length) {
134:                if (data == null) {
135:                    throw new IllegalArgumentException(
136:                            "Data is null for long MIDI event ");
137:                } else if ((offset >= data.length) || (offset < 0)) {
138:                    if (data.length != 0) {
139:                        throw new IllegalArgumentException(
140:                                "Invalid offset for long MIDI event");
141:                    }
142:                } else if ((length > data.length) || (length < 0)) {
143:                    throw new IllegalArgumentException(
144:                            "Length is out of range for long MIDI event");
145:                }
146:            }
147:
148:            private void checkProgram(int program) {
149:                if (program < 0 || program > 127) {
150:                    throw new IllegalArgumentException(
151:                            "Program is out of range");
152:                }
153:            }
154:
155:            private void checkBank(int bank) {
156:                if (bank < 0 || bank > 16383) {
157:                    throw new IllegalArgumentException("Bank is out of range");
158:                }
159:            }
160:
161:            // DirectControls ////////////////////////////////////////////////////
162:
163:            public synchronized void playerStarted() {
164:                if (_cachedRate != -1) {
165:                    // NOTE - MMAPI SPEC is not clear about this
166:                    // set cached rate at enter playing state
167:                    nSetRate(_player.hNative, _cachedRate);
168:                    _cachedRate = -1;
169:                }
170:            }
171:
172:            public synchronized void playerStopped() {
173:            }
174:
175:            public synchronized void playerClosed() {
176:                _player = null;
177:            }
178:
179:            // MIDIControl ///////////////////////////////////////////////////////
180:
181:            public synchronized boolean isBankQuerySupported() {
182:                return nIsBankQuerySupported(_player.hNative);
183:            }
184:
185:            public synchronized int[] getProgram(int channel)
186:                    throws MediaException {
187:
188:                checkState();
189:                checkChannel(channel);
190:
191:                int[] p = new int[2];
192:
193:                int len = nGetProgram(_player.hNative, channel, p);
194:                if (len < 0)
195:                    throw new MediaException("GetProgram failure");
196:
197:                return p;
198:            }
199:
200:            public synchronized int[] getBankList(boolean custom)
201:                    throws MediaException {
202:
203:                checkState();
204:
205:                int[] bl1 = new int[20];
206:
207:                int len = nGetBankList(_player.hNative, custom, bl1);
208:                if (len < 0)
209:                    throw new MediaException("BankList failure");
210:
211:                int[] bl2 = new int[len];
212:
213:                for (int i = 0; i < len; i++)
214:                    bl2[i] = bl1[i];
215:
216:                return bl2;
217:            }
218:
219:            public synchronized String getKeyName(int bank, int prog, int key)
220:                    throws MediaException {
221:
222:                checkState();
223:                checkBank(bank);
224:                checkProgram(prog);
225:
226:                if ((key < 0) || (key > 127))
227:                    throw new IllegalArgumentException("key out of range");
228:
229:                byte[] str = new byte[64];
230:
231:                int len = nGetKeyName(_player.hNative, bank, prog, key, str);
232:                if (len < 0)
233:                    throw new MediaException("KeyName failure");
234:
235:                return new String(str, 0, len);
236:            }
237:
238:            public synchronized String getProgramName(int bank, int prog)
239:                    throws MediaException {
240:
241:                checkState();
242:                checkBank(bank);
243:                checkProgram(prog);
244:
245:                byte[] str = new byte[64];
246:
247:                int len = nGetProgramName(_player.hNative, bank, prog, str);
248:                if (len < 0)
249:                    throw new MediaException("ProgramName failure");
250:
251:                return new String(str, 0, len);
252:            }
253:
254:            public synchronized int[] getProgramList(int bank)
255:                    throws MediaException {
256:
257:                checkState();
258:                checkBank(bank);
259:
260:                int[] pl1 = new int[200];
261:
262:                int len = nGetProgramList(_player.hNative, bank, pl1);
263:                if (len < 0)
264:                    throw new MediaException("ProgramList failure");
265:
266:                int[] pl2 = new int[len];
267:
268:                for (int i = 0; i < len; i++)
269:                    pl2[i] = pl1[i];
270:
271:                return pl2;
272:            }
273:
274:            public synchronized void setChannelVolume(int channel, int volume) {
275:                checkState();
276:                checkChannel(channel);
277:                checkVolume(volume);
278:
279:                if (_player != null && _player.hNative != 0) {
280:                    nSetChannelVolume(_player.hNative, channel, volume);
281:                }
282:            }
283:
284:            public synchronized int getChannelVolume(int channel) {
285:                checkState();
286:                checkChannel(channel);
287:
288:                if (_player != null && _player.hNative != 0) {
289:                    return nGetChannelVolume(_player.hNative, channel);
290:                } else {
291:                    return -1;
292:                }
293:            }
294:
295:            public synchronized void setProgram(int channel, int bank,
296:                    int program) {
297:                checkState();
298:                checkChannel(channel);
299:
300:                if (bank != -1)
301:                    checkBank(bank);
302:                checkProgram(program);
303:
304:                if (_player != null && _player.hNative != 0) {
305:                    nSetProgram(_player.hNative, channel, bank, program);
306:                }
307:            }
308:
309:            public synchronized void shortMidiEvent(int type, int data1,
310:                    int data2) {
311:                checkState();
312:                checkType(type);
313:                checkData(data1);
314:                checkData(data2);
315:
316:                if (_player != null && _player.hNative != 0) {
317:                    nShortMidiEvent(_player.hNative, type, data1, data2);
318:                }
319:            }
320:
321:            public synchronized int longMidiEvent(byte[] data, int offset,
322:                    int length) {
323:                checkState();
324:                checkLongMidiEvent(data, offset, length);
325:
326:                if (_player != null && _player.hNative != 0) {
327:                    return nLongMidiEvent(_player.hNative, data, offset, length);
328:                } else {
329:                    return -1;
330:                }
331:            }
332:
333:            // RateControl ///////////////////////////////////////////////////////
334:
335:            //
336:            // SPEC:
337:            // 	If the Player is already started, setRate will immediately take effect.
338:            //	Q - How about the other case?
339:            //
340:            public synchronized int setRate(int millirate) {
341:                if (_player == null)
342:                    return 0;
343:
344:                int max = getMaxRate();
345:                int min = getMinRate();
346:
347:                if (millirate > max) {
348:                    millirate = max;
349:                } else if (millirate < min) {
350:                    millirate = min;
351:                }
352:
353:                if (_player.state >= Player.STARTED) {
354:                    _cachedRate = -1;
355:                    return nSetRate(_player.hNative, millirate);
356:                } else {
357:                    _cachedRate = millirate;
358:                    return millirate;
359:                }
360:            }
361:
362:            public synchronized int getRate() {
363:                if (_player != null && _player.hNative != 0) {
364:                    return _cachedRate == -1 ? nGetRate(_player.hNative)
365:                            : _cachedRate;
366:                } else {
367:                    return 0;
368:                }
369:            }
370:
371:            public synchronized int getMaxRate() {
372:                if (_player != null && _player.hNative != 0) {
373:                    return nGetMaxRate(_player.hNative);
374:                } else {
375:                    return 0;
376:                }
377:            }
378:
379:            public synchronized int getMinRate() {
380:                if (_player != null && _player.hNative != 0) {
381:                    return nGetMinRate(_player.hNative);
382:                } else {
383:                    return 0;
384:                }
385:            }
386:
387:            // PitchControl //////////////////////////////////////////////////////
388:
389:            public synchronized int setPitch(int millisemitones) {
390:                int max = getMaxPitch();
391:                int min = getMinPitch();
392:
393:                if (millisemitones > max) {
394:                    millisemitones = max;
395:                } else if (millisemitones < min) {
396:                    millisemitones = min;
397:                }
398:
399:                if (_player != null && _player.hNative != 0) {
400:                    return nSetPitch(_player.hNative, millisemitones);
401:                } else {
402:                    return 0;
403:                }
404:            }
405:
406:            public synchronized int getPitch() {
407:                if (_player != null && _player.hNative != 0) {
408:                    return nGetPitch(_player.hNative);
409:                } else {
410:                    return 0;
411:                }
412:            }
413:
414:            public synchronized int getMaxPitch() {
415:                if (_player != null && _player.hNative != 0) {
416:                    return nGetMaxPitch(_player.hNative);
417:                } else {
418:                    return 0;
419:                }
420:            }
421:
422:            public synchronized int getMinPitch() {
423:                if (_player != null && _player.hNative != 0) {
424:                    return nGetMinPitch(_player.hNative);
425:                } else {
426:                    return 0;
427:                }
428:            }
429:
430:            // TempoControl //////////////////////////////////////////////////////
431:
432:            public synchronized int setTempo(int millitempo) {
433:                if (millitempo < 0) {
434:                    millitempo = 0;
435:                }
436:
437:                if (_player != null && _player.hNative != 0) {
438:                    return nSetTempo(_player.hNative, millitempo);
439:                } else {
440:                    return 0;
441:                }
442:            }
443:
444:            public synchronized int getTempo() {
445:                if (_player != null && _player.hNative != 0) {
446:                    return nGetTempo(_player.hNative);
447:                } else {
448:                    return 0;
449:                }
450:            }
451:
452:            //////////////////////////////////////////////////////////////////////
453:
454:            private DirectPlayer _player;
455:            private int _cachedRate = -1;
456:        };
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