1 /*
2  * Copyright (C) 2015 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  */
16 
17 package com.example.android.common.midi;
18 
19 import android.app.Activity;
20 import android.media.midi.MidiDeviceInfo;
21 import android.media.midi.MidiManager;
22 import android.util.Log;
23 
24 import java.io.IOException;
25 
26 /**
27  * Select an output port and connect it to a destination input port.
28  */
29 public class MidiOutputPortConnectionSelector extends MidiPortSelector {
30 
31     private MidiPortConnector mSynthConnector;
32     private MidiDeviceInfo mDestinationDeviceInfo;
33     private int mDestinationPortIndex;
34     private MidiPortConnector.OnPortsConnectedListener mConnectedListener;
35 
36     /**
37      * @param midiManager
38      * @param activity
39      * @param spinnerId
40      * @param type
41      */
MidiOutputPortConnectionSelector(MidiManager midiManager, Activity activity, int spinnerId, MidiDeviceInfo destinationDeviceInfo, int destinationPortIndex)42     public MidiOutputPortConnectionSelector(MidiManager midiManager,
43             Activity activity, int spinnerId,
44             MidiDeviceInfo destinationDeviceInfo, int destinationPortIndex) {
45         super(midiManager, activity, spinnerId,
46                 MidiDeviceInfo.PortInfo.TYPE_OUTPUT);
47         mDestinationDeviceInfo = destinationDeviceInfo;
48         mDestinationPortIndex = destinationPortIndex;
49     }
50 
51     @Override
onPortSelected(final MidiPortWrapper wrapper)52     public void onPortSelected(final MidiPortWrapper wrapper) {
53         Log.i(MidiConstants.TAG, "connectPortToSynth: " + wrapper);
54         onClose();
55         if (wrapper.getDeviceInfo() != null) {
56             mSynthConnector = new MidiPortConnector(mMidiManager);
57             mSynthConnector.connectToDevicePort(wrapper.getDeviceInfo(),
58                     wrapper.getPortIndex(), mDestinationDeviceInfo,
59                     mDestinationPortIndex,
60                     // not safe on UI thread
61                     mConnectedListener, null);
62         }
63     }
64 
65     @Override
onClose()66     public void onClose() {
67         try {
68             if (mSynthConnector != null) {
69                 mSynthConnector.close();
70                 mSynthConnector = null;
71             }
72         } catch (IOException e) {
73             Log.e(MidiConstants.TAG, "Exception in closeSynthResources()", e);
74         }
75     }
76 
77     /**
78      * @param myPortsConnectedListener
79      */
setConnectedListener( MidiPortConnector.OnPortsConnectedListener connectedListener)80     public void setConnectedListener(
81             MidiPortConnector.OnPortsConnectedListener connectedListener) {
82         mConnectedListener = connectedListener;
83     }
84 }
85