1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16package android.support.v4.media.session;
17
18import android.graphics.Bitmap;
19import android.media.MediaMetadataEditor;
20import android.media.MediaMetadataRetriever;
21import android.media.Rating;
22import android.media.RemoteControlClient;
23import android.os.Bundle;
24
25public class MediaSessionCompatApi19 {
26    /***** PlaybackState actions *****/
27    private static final long ACTION_SET_RATING = 1 << 7;
28
29    /***** MediaMetadata keys ********/
30    private static final String METADATA_KEY_USER_RATING = "android.media.metadata.USER_RATING";
31    private static final String METADATA_KEY_RATING = "android.media.metadata.RATING";
32    private static final String METADATA_KEY_YEAR = "android.media.metadata.YEAR";
33
34    public static void setTransportControlFlags(Object rccObj, long actions) {
35        ((RemoteControlClient) rccObj).setTransportControlFlags(
36                getRccTransportControlFlagsFromActions(actions));
37    }
38
39    public static Object createMetadataUpdateListener(MediaSessionCompatApi14.Callback callback) {
40        return new OnMetadataUpdateListener<MediaSessionCompatApi14.Callback>(callback);
41    }
42
43    public static void setMetadata(Object rccObj, Bundle metadata, long actions) {
44        RemoteControlClient.MetadataEditor editor = ((RemoteControlClient) rccObj).editMetadata(
45                true);
46        MediaSessionCompatApi14.buildOldMetadata(metadata, editor);
47        addNewMetadata(metadata, editor);
48        if ((actions & ACTION_SET_RATING) != 0) {
49            editor.addEditableKey(RemoteControlClient.MetadataEditor.RATING_KEY_BY_USER);
50        }
51        editor.apply();
52    }
53
54    public static void setOnMetadataUpdateListener(Object rccObj, Object onMetadataUpdateObj) {
55        ((RemoteControlClient) rccObj).setMetadataUpdateListener(
56                (RemoteControlClient.OnMetadataUpdateListener) onMetadataUpdateObj);
57    }
58
59    static int getRccTransportControlFlagsFromActions(long actions) {
60        int transportControlFlags =
61                MediaSessionCompatApi18.getRccTransportControlFlagsFromActions(actions);
62        if ((actions & ACTION_SET_RATING) != 0) {
63            transportControlFlags |= RemoteControlClient.FLAG_KEY_MEDIA_RATING;
64        }
65        return transportControlFlags;
66    }
67
68    static void addNewMetadata(Bundle metadata, RemoteControlClient.MetadataEditor editor) {
69        if (metadata == null) {
70            return;
71        }
72        if (metadata.containsKey(METADATA_KEY_YEAR)) {
73            editor.putLong(MediaMetadataRetriever.METADATA_KEY_YEAR,
74                    metadata.getLong(METADATA_KEY_YEAR));
75        }
76        if (metadata.containsKey(METADATA_KEY_RATING)) {
77            editor.putObject(MediaMetadataEditor.RATING_KEY_BY_OTHERS,
78                    metadata.getParcelable(METADATA_KEY_RATING));
79        }
80        if (metadata.containsKey(METADATA_KEY_USER_RATING)) {
81            editor.putObject(MediaMetadataEditor.RATING_KEY_BY_USER,
82                    metadata.getParcelable(METADATA_KEY_USER_RATING));
83        }
84    }
85
86    static class OnMetadataUpdateListener<T extends MediaSessionCompatApi14.Callback> implements
87            RemoteControlClient.OnMetadataUpdateListener {
88        protected final T mCallback;
89
90        public OnMetadataUpdateListener(T callback) {
91            mCallback = callback;
92        }
93
94        @Override
95        public void onMetadataUpdate(int key, Object newValue) {
96            if (key == MediaMetadataEditor.RATING_KEY_BY_USER && newValue instanceof Rating) {
97                mCallback.onSetRating(newValue);
98            }
99        }
100    }
101}
102