VideoModel.java revision c1edca92206708d49fc9a14da9eb5cc7e60e4a1d 
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
18package com.android.mms.model;
19
20import com.android.mms.ContentRestrictionException;
21import com.android.mms.LogTag;
22import com.android.mms.dom.events.EventImpl;
23import com.android.mms.dom.smil.SmilMediaElementImpl;
24import com.android.mms.drm.DrmWrapper;
25import com.google.android.mms.MmsException;
26import android.database.sqlite.SqliteWrapper;
27
28import org.w3c.dom.events.Event;
29import org.w3c.dom.smil.ElementTime;
30
31import android.content.ContentResolver;
32import android.content.Context;
33import android.database.Cursor;
34import android.net.Uri;
35import android.provider.MediaStore.Images;
36import android.text.TextUtils;
37import android.util.Config;
38import android.util.Log;
39
40import com.google.android.mms.ContentType;
41import java.io.IOException;
42
43public class VideoModel extends RegionMediaModel {
44    private static final String TAG = MediaModel.TAG;
45    private static final boolean DEBUG = true;
46    private static final boolean LOCAL_LOGV = DEBUG ? Config.LOGD : Config.LOGV;
47
48    public VideoModel(Context context, Uri uri, RegionModel region)
49            throws MmsException {
50        this(context, null, null, uri, region);
51        initModelFromUri(uri);
52        checkContentRestriction();
53    }
54
55    public VideoModel(Context context, String contentType, String src,
56            Uri uri, RegionModel region) throws MmsException {
57        super(context, SmilHelper.ELEMENT_TAG_VIDEO, contentType, src, uri, region);
58    }
59
60    public VideoModel(Context context, String contentType, String src,
61            DrmWrapper wrapper, RegionModel regionModel) throws IOException {
62        super(context, SmilHelper.ELEMENT_TAG_VIDEO, contentType, src, wrapper, regionModel);
63    }
64
65    private void initModelFromUri(Uri uri) throws MmsException {
66        ContentResolver cr = mContext.getContentResolver();
67        Cursor c = SqliteWrapper.query(mContext, cr, uri, null, null, null, null);
68
69        if (c != null) {
70            try {
71                if (c.moveToFirst()) {
72                    String path = c.getString(c.getColumnIndexOrThrow(Images.Media.DATA));
73                    mSrc = path.substring(path.lastIndexOf('/') + 1);
74                    mContentType = c.getString(c.getColumnIndexOrThrow(
75                            Images.Media.MIME_TYPE));
76                    if (TextUtils.isEmpty(mContentType)) {
77                        throw new MmsException("Type of media is unknown.");
78                    }
79
80                    if (mContentType.equals(ContentType.VIDEO_MP4) && !(TextUtils.isEmpty(mSrc))) {
81                        int index = mSrc.lastIndexOf(".");
82                        if (index != -1) {
83                            try {
84                                String extension = mSrc.substring(index + 1);
85                                if (!(TextUtils.isEmpty(extension)) &&
86                                        (extension.equalsIgnoreCase("3gp") ||
87                                        extension.equalsIgnoreCase("3gpp") ||
88                                        extension.equalsIgnoreCase("3g2"))) {
89                                    mContentType = ContentType.VIDEO_3GPP;
90                                }
91                            } catch(IndexOutOfBoundsException ex) {
92                                if (LOCAL_LOGV) {
93                                    Log.v(TAG, "Media extension is unknown.");
94                                }
95                            }
96                        }
97                    }
98
99                    if (Log.isLoggable(LogTag.APP, Log.VERBOSE)) {
100                        Log.v(TAG, "New VideoModel created:"
101                                + " mSrc=" + mSrc
102                                + " mContentType=" + mContentType
103                                + " mUri=" + uri);
104                    }
105                } else {
106                    throw new MmsException("Nothing found: " + uri);
107                }
108            } finally {
109                c.close();
110            }
111        } else {
112            throw new MmsException("Bad URI: " + uri);
113        }
114
115        initMediaDuration();
116    }
117
118    // EventListener Interface
119    public void handleEvent(Event evt) {
120        String evtType = evt.getType();
121        if (LOCAL_LOGV || Log.isLoggable(LogTag.APP, Log.VERBOSE)) {
122            Log.v(TAG, "[VideoModel] handleEvent " + evt.getType() + " on " + this);
123        }
124
125        MediaAction action = MediaAction.NO_ACTIVE_ACTION;
126        if (evtType.equals(SmilMediaElementImpl.SMIL_MEDIA_START_EVENT)) {
127            action = MediaAction.START;
128
129            // if the Music player app is playing audio, we should pause that so it won't
130            // interfere with us playing video here.
131            pauseMusicPlayer();
132
133            mVisible = true;
134        } else if (evtType.equals(SmilMediaElementImpl.SMIL_MEDIA_END_EVENT)) {
135            action = MediaAction.STOP;
136            if (mFill != ElementTime.FILL_FREEZE) {
137                mVisible = false;
138            }
139        } else if (evtType.equals(SmilMediaElementImpl.SMIL_MEDIA_PAUSE_EVENT)) {
140            action = MediaAction.PAUSE;
141            mVisible = true;
142        } else if (evtType.equals(SmilMediaElementImpl.SMIL_MEDIA_SEEK_EVENT)) {
143            action = MediaAction.SEEK;
144            mSeekTo = ((EventImpl) evt).getSeekTo();
145            mVisible = true;
146        }
147
148        appendAction(action);
149        notifyModelChanged(false);
150    }
151
152    protected void checkContentRestriction() throws ContentRestrictionException {
153        ContentRestriction cr = ContentRestrictionFactory.getContentRestriction();
154        cr.checkVideoContentType(mContentType);
155    }
156
157    @Override
158    protected boolean isPlayable() {
159        return true;
160    }
161}
162