Home | History | Annotate | Download | only in com.example.android.common.midi 
      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      */
     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
     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
     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      */
     80     public void setConnectedListener(
     81             MidiPortConnector.OnPortsConnectedListener connectedListener) {
     82         mConnectedListener = connectedListener;
     83     }
     84 }
     85