1 /*
2  * Copyright (C) 2008 Esmertec AG.
3  * Copyright (C) 2008 The Android Open Source Project
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  *      http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 package com.android.mms.model;
19 
20 import java.util.HashMap;
21 import java.util.Map;
22 
23 import org.w3c.dom.events.Event;
24 
25 import android.content.ContentResolver;
26 import android.content.Context;
27 import android.database.Cursor;
28 import android.database.sqlite.SqliteWrapper;
29 import android.net.Uri;
30 import android.provider.MediaStore.Audio;
31 import android.provider.Telephony.Mms.Part;
32 import android.text.TextUtils;
33 import android.util.Log;
34 
35 import com.android.mms.ContentRestrictionException;
36 import com.android.mms.dom.events.EventImpl;
37 import com.android.mms.dom.smil.SmilMediaElementImpl;
38 import com.google.android.mms.MmsException;
39 
40 public class AudioModel extends MediaModel {
41     private static final String TAG = MediaModel.TAG;
42     private static final boolean DEBUG = false;
43     private static final boolean LOCAL_LOGV = false;
44 
45     private final HashMap<String, String> mExtras;
46 
AudioModel(Context context, Uri uri)47     public AudioModel(Context context, Uri uri) throws MmsException {
48         this(context, null, null, uri);
49         initModelFromUri(uri);
50         checkContentRestriction();
51     }
52 
AudioModel(Context context, String contentType, String src, Uri uri)53     public AudioModel(Context context, String contentType, String src, Uri uri) throws MmsException {
54         super(context, SmilHelper.ELEMENT_TAG_AUDIO, contentType, src, uri);
55         mExtras = new HashMap<String, String>();
56     }
57 
initModelFromUri(Uri uri)58     private void initModelFromUri(Uri uri) throws MmsException {
59         ContentResolver cr = mContext.getContentResolver();
60         Cursor c = SqliteWrapper.query(mContext, cr, uri, null, null, null, null);
61 
62         if (c != null) {
63             try {
64                 if (c.moveToFirst()) {
65                     String path;
66                     boolean isFromMms = isMmsUri(uri);
67 
68                     // FIXME We suppose that there should be only two sources
69                     // of the audio, one is the media store, the other is
70                     // our MMS database.
71                     if (isFromMms) {
72                         path = c.getString(c.getColumnIndexOrThrow(Part._DATA));
73                         mContentType = c.getString(c.getColumnIndexOrThrow(Part.CONTENT_TYPE));
74                     } else {
75                         path = c.getString(c.getColumnIndexOrThrow(Audio.Media.DATA));
76                         mContentType = c.getString(c.getColumnIndexOrThrow(
77                                 Audio.Media.MIME_TYPE));
78                         // Get more extras information which would be useful
79                         // to the user.
80                         String album = c.getString(c.getColumnIndexOrThrow("album"));
81                         if (!TextUtils.isEmpty(album)) {
82                             mExtras.put("album", album);
83                         }
84 
85                         String artist = c.getString(c.getColumnIndexOrThrow("artist"));
86                         if (!TextUtils.isEmpty(artist)) {
87                             mExtras.put("artist", artist);
88                         }
89                     }
90                     mSrc = path.substring(path.lastIndexOf('/') + 1);
91 
92                     if (TextUtils.isEmpty(mContentType)) {
93                         throw new MmsException("Type of media is unknown.");
94                     }
95 
96                     if (LOCAL_LOGV) {
97                         Log.v(TAG, "New AudioModel created:"
98                                 + " mSrc=" + mSrc
99                                 + " mContentType=" + mContentType
100                                 + " mUri=" + uri
101                                 + " mExtras=" + mExtras);
102                     }
103                 } else {
104                     throw new MmsException("Nothing found: " + uri);
105                 }
106             } finally {
107                 c.close();
108             }
109         } else {
110             throw new MmsException("Bad URI: " + uri);
111         }
112 
113         initMediaDuration();
114     }
115 
stop()116     public void stop() {
117         appendAction(MediaAction.STOP);
118         notifyModelChanged(false);
119     }
120 
handleEvent(Event evt)121     public void handleEvent(Event evt) {
122         String evtType = evt.getType();
123         if (LOCAL_LOGV) {
124             Log.v(TAG, "Handling event: " + evtType + " on " + this);
125         }
126 
127         MediaAction action = MediaAction.NO_ACTIVE_ACTION;
128         if (evtType.equals(SmilMediaElementImpl.SMIL_MEDIA_START_EVENT)) {
129             action = MediaAction.START;
130             // if the Music player app is playing audio, we should pause that so it won't
131             // interfere with us playing audio here.
132             pauseMusicPlayer();
133         } else if (evtType.equals(SmilMediaElementImpl.SMIL_MEDIA_END_EVENT)) {
134             action = MediaAction.STOP;
135         } else if (evtType.equals(SmilMediaElementImpl.SMIL_MEDIA_PAUSE_EVENT)) {
136             action = MediaAction.PAUSE;
137         } else if (evtType.equals(SmilMediaElementImpl.SMIL_MEDIA_SEEK_EVENT)) {
138             action = MediaAction.SEEK;
139             mSeekTo = ((EventImpl) evt).getSeekTo();
140         }
141 
142         appendAction(action);
143         notifyModelChanged(false);
144     }
145 
getExtras()146     public Map<String, ?> getExtras() {
147         return mExtras;
148     }
149 
checkContentRestriction()150     protected void checkContentRestriction() throws ContentRestrictionException {
151         ContentRestriction cr = ContentRestrictionFactory.getContentRestriction();
152         cr.checkAudioContentType(mContentType);
153     }
154 
155     @Override
isPlayable()156     protected boolean isPlayable() {
157         return true;
158     }
159 }
160