Source Code Cross Referenced for SimplePlayer.java in  » IDE-Netbeans » mobility » example » mmademo » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Netbeans » mobility » example.mmademo 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright (c) 2007, Sun Microsystems, Inc.
003:         * 
004:         * All rights reserved.
005:         * 
006:         * Redistribution and use in source and binary forms, with or without
007:         * modification, are permitted provided that the following conditions
008:         * are met:
009:         * 
010:         *     * Redistributions of source code must retain the above copyright
011:         *       notice, this list of conditions and the following disclaimer.
012:         *     * Redistributions in binary form must reproduce the above copyright
013:         *       notice, this list of conditions and the following disclaimer in
014:         *       the documentation and/or other materials provided with the
015:         *       distribution.
016:         *     * Neither the name of Sun Microsystems, Inc. nor the names of its
017:         *       contributors may be used to endorse or promote products derived
018:         *       from this software without specific prior written permission.
019:         * 
020:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
021:         * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
022:         * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
023:         * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
024:         * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
025:         * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
026:         * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
027:         * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
028:         * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
029:         * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
030:         * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
031:         */
032:        package example.mmademo;
033:
034:        import javax.microedition.midlet.*;
035:        import javax.microedition.lcdui.*;
036:        import javax.microedition.media.*;
037:        import javax.microedition.media.control.*;
038:        import java.util.*;
039:        import java.io.*;
040:
041:        /**
042:         * An example MIDlet for a generic Player for audio, MIDI media
043:         * The top-level URLs are configured in the jad file:<br>
044:         * <code>PlayerURL-n</code> defines the n'th URL<br>
045:         * <code>PlayerTitle-n</code> defines the n'th title
046:         * <p>
047:         * Special URL "protocols" can be used:<br>
048:         * <code>resource:</code> for media data from the jar<br>
049:         * <code>rms:</code> for media data from RMS memory<br>
050:         * <p>
051:         * Examples:<br>
052:         * <code>
053:         * PlayerURL-1:   http://server.com/ <br>
054:         * PlayerTitle-1: Browse server.com <br>
055:         * PlayerURL-2:   resource:/audio/hello.wav <br>
056:         * PlayerTitle-2: hello.wav from jar <br>
057:         * PlayerURL-3:   http://localhost/movie.mpg <br>
058:         * PlayerTitle-3: Funny movie <br>
059:         * PlayerURL-4:   rms:/ <br>
060:         * PlayerTitle-4: Browse Record Stores<br>
061:         * PlayerURL-5:   capture://audio <br>
062:         * PlayerTitle-5: Capture Audio from default device<br>
063:         * </code>
064:         *
065:         * @version 1.5
066:         */
067:        public class SimplePlayer extends BaseListMidlet implements 
068:                Utils.BreadCrumbTrail, Utils.QueryListener {
069:
070:            private static final String manualEnterURL = "manual";
071:            private static final String manualEnterTitle = "[enter URL]";
072:            private String lastManualURL = "";
073:
074:            private Vector titles;
075:            private Vector urls;
076:
077:            /* This can be put in the Utils file if necessary */
078:            private static final String httpSupportedList = getSupportedList("http");
079:            private static final String allSupportedList = getSupportedList(null);
080:
081:            private static String getSupportedList(String protocol) {
082:                String list[] = Manager.getSupportedContentTypes(protocol);
083:                StringBuffer buffer = new StringBuffer();
084:                for (int i = 0; i < list.length; i++) {
085:                    buffer.append(list[i]).append(",");
086:                }
087:                if (list.length > 0)
088:                    return buffer.toString();
089:                else
090:                    return "";
091:            }
092:
093:            // SimplePlayerCanvas is the default player
094:            private SimplePlayerCanvas simplePlayerCanvas = new SimplePlayerCanvas(
095:                    "MMAPI Player", this );
096:
097:            private Utils.ContentHandler[] handlers = {
098:                    new SimpleHttpBrowser("MMAPI HTTP Browser", this ),
099:                    new SimpleRmsBrowser("MMAPI RMS Browser", this ),
100:                    simplePlayerCanvas,
101:            //new SimplePlayerForm("MMAPI Player", this), // will be instantiated by SimplePlayer
102:            };
103:
104:            public SimplePlayer() {
105:                super ("MMAPI Player");
106:            }
107:
108:            /* This can be put in the Utils file if necessary */
109:            protected final static boolean isSupported(String url) {
110:                if (!url.startsWith("capture:")) {
111:                    String contentType;
112:                    try {
113:                        contentType = Utils.guessContentType(url);
114:                    } catch (Exception e) {
115:                        contentType = "";
116:                    }
117:                    if (contentType.equals(""))
118:                        return false;
119:                    if (url.startsWith("resource:")) {
120:                        /**
121:                         * The MMAPI spec doesn't provide an api to
122:                         * query if a contentType is supported via
123:                         * InputStream. So we cannot handle the case
124:                         * where a contentType is supported in http
125:                         * protocol but not supported via InputStream.
126:                         * This will not be the case for Sun's MMAPI
127:                         * implementation.
128:                         * Even if this is the case in another MMAPI implementation,
129:                         * the player creation will fail with a message that
130:                         * the player couldn't be created.
131:                         */
132:                        if (allSupportedList.indexOf(contentType + ",") == -1)
133:                            return false;
134:                    } else if (url.startsWith("http:")) {
135:                        if (httpSupportedList.indexOf(contentType + ",") == -1)
136:                            return false;
137:                    }
138:                }
139:                return true;
140:            }
141:
142:            protected void fillList(List list) {
143:                titles = new Vector();
144:                urls = new Vector();
145:                for (int n = 1; n < 100; n++) {
146:                    String nthURL = "PlayerURL-" + n;
147:                    String url = getAppProperty(nthURL);
148:                    if (url == null || url.length() == 0) {
149:                        break;
150:                    }
151:                    if (!isSupported(url))
152:                        continue;
153:                    String nthTitle = "PlayerTitle-" + n;
154:                    String title = getAppProperty(nthTitle);
155:                    if (title == null || title.length() == 0) {
156:                        title = url;
157:                    }
158:                    titles.addElement(title);
159:                    urls.addElement(url);
160:                    list.append(title, null);
161:                }
162:                // TODO: add MRU list here
163:
164:                // manual enter of URL
165:                titles.addElement(manualEnterTitle);
166:                urls.addElement(manualEnterURL);
167:                list.append(manualEnterTitle, null);
168:
169:                list.addCommand(exitCommand);
170:                list.addCommand(selectCommand);
171:            }
172:
173:            /**
174:             * Main function that decides which class to display
175:             * dependent on the url.
176:             */
177:            public void handle(String title, String url) {
178:                try {
179:                    InputStream is = null;
180:                    String ct = "";
181:                    // first magic URL's
182:                    if (url.equals(manualEnterURL)) {
183:                        enterURL();
184:                        return;
185:                    } else if (url.startsWith("resource:")) {
186:                        is = getClass().getResourceAsStream(url.substring(9));
187:                        is.mark(is.available());
188:                    } else if (SimpleRmsBrowser.isRmsFile(url)) {
189:                        is = SimpleRmsBrowser.getRecordStoreStream(url);
190:                    }
191:                    // ringtone text file ?
192:                    if (Utils.guessContentType(url).equals("audio/x-txt")) {
193:                        RingToneConverter rtc;
194:                        if (is != null) {
195:                            rtc = new RingToneConverter(is, title);
196:                        } else {
197:                            rtc = new RingToneConverter(url, title);
198:                        }
199:                        Player tonePlayer = Manager
200:                                .createPlayer(Manager.TONE_DEVICE_LOCATOR);
201:                        tonePlayer.realize();
202:                        ToneControl tc = (ToneControl) tonePlayer
203:                                .getControl("ToneControl");
204:                        tc.setSequence(rtc.getSequence());
205:                        // do NOT prefetch this player. Otherwise SimplePlayerGUI will not initialize this player
206:                        go(simplePlayerCanvas);
207:                        simplePlayerCanvas.handle(rtc.getName(), tonePlayer);
208:                        return;
209:                    }
210:                    if (is != null) {
211:                        if (ct == "") {
212:                            ct = Utils.guessContentType(url);
213:                        }
214:                        go(simplePlayerCanvas);
215:                        simplePlayerCanvas.handle(title, is, ct);
216:                        return;
217:                    } else {
218:                        for (int i = 0; i < handlers.length; i++) {
219:                            if (handlers[i].canHandle(url)) {
220:                                go((Displayable) handlers[i]);
221:                                handlers[i].handle(title, url);
222:                                return;
223:                            }
224:                        }
225:                    }
226:                    Utils.error("No handler available!", this );
227:                } catch (Exception e) {
228:                    Utils.error(e, this );
229:                }
230:            }
231:
232:            protected void selectCommand(int index) {
233:                if (index >= 0) {
234:                    if (index < titles.size()) {
235:                        handle((String) titles.elementAt(index), (String) urls
236:                                .elementAt(index));
237:                    }
238:                }
239:            }
240:
241:            /**
242:             * Display a prompt for a new URL
243:             */
244:            private void enterURL() {
245:                Utils.query("Enter a URL", lastManualURL, 300, TextField.URL,
246:                        this , this );
247:            }
248:
249:            // //////////////////// interface Utils.QueryListener /////////////////// //
250:            public void queryOK(String text) {
251:                handle(text, text);
252:                lastManualURL = text;
253:            }
254:
255:            public void queryCancelled() {
256:                // don't do anything if query is cancelled.
257:                // the previous visible Displayable will be
258:                // displayed automatically
259:            }
260:
261:            // //////////////////// interface MIDlet /////////////////// //
262:            public void destroyApp(boolean unconditional) {
263:                Utils.ContentHandler p = getCurrentHandler();
264:                if (p != null) {
265:                    p.close();
266:                }
267:                super .destroyApp(unconditional);
268:            }
269:
270:            // util method
271:            private Utils.ContentHandler getCurrentHandler() {
272:                Displayable d = getDisplay().getCurrent();
273:                if (d instanceof  Utils.ContentHandler) {
274:                    return (Utils.ContentHandler) d;
275:                }
276:                return null;
277:            }
278:
279:            // for debugging
280:            public String toString() {
281:                return "SimplePlayer";
282:            }
283:
284:        }
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