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      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 
     47     public AudioModel(Context context, Uri uri) throws MmsException {
     48         this(context, null, null, uri);
     49         initModelFromUri(uri);
     50         checkContentRestriction();
     51     }
     52 
     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 
     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 
    116     public void stop() {
    117         appendAction(MediaAction.STOP);
    118         notifyModelChanged(false);
    119     }
    120 
    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 
    146     public Map<String, ?> getExtras() {
    147         return mExtras;
    148     }
    149 
    150     protected void checkContentRestriction() throws ContentRestrictionException {
    151         ContentRestriction cr = ContentRestrictionFactory.getContentRestriction();
    152         cr.checkAudioContentType(mContentType);
    153     }
    154 
    155     @Override
    156     protected boolean isPlayable() {
    157         return true;
    158     }
    159 }
    160