MidiOutputPortConnectionSelector.java

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/*
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 * Copyright (C) 2015 The Android Open Source Project
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *      http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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package com.example.android.common.midi;
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import android.app.Activity;
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import android.media.midi.MidiDeviceInfo;
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import android.media.midi.MidiManager;
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import android.util.Log;
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import java.io.IOException;
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/**
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 * Select an output port and connect it to a destination input port.
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 */
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public class MidiOutputPortConnectionSelector extends MidiPortSelector {
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    private MidiPortConnector mSynthConnector;
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    private MidiDeviceInfo mDestinationDeviceInfo;
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    private int mDestinationPortIndex;
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    private MidiPortConnector.OnPortsConnectedListener mConnectedListener;
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    /**
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     * @param midiManager
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     * @param activity
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     * @param spinnerId
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     * @param type
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     */
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    public MidiOutputPortConnectionSelector(MidiManager midiManager,
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            Activity activity, int spinnerId,
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            MidiDeviceInfo destinationDeviceInfo, int destinationPortIndex) {
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        super(midiManager, activity, spinnerId,
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                MidiDeviceInfo.PortInfo.TYPE_OUTPUT);
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        mDestinationDeviceInfo = destinationDeviceInfo;
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        mDestinationPortIndex = destinationPortIndex;
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    }
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    @Override
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    public void onPortSelected(final MidiPortWrapper wrapper) {
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        Log.i(MidiConstants.TAG, "connectPortToSynth: " + wrapper);
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        onClose();
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        if (wrapper.getDeviceInfo() != null) {
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            mSynthConnector = new MidiPortConnector(mMidiManager);
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            mSynthConnector.connectToDevicePort(wrapper.getDeviceInfo(),
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                    wrapper.getPortIndex(), mDestinationDeviceInfo,
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                    mDestinationPortIndex,
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                    // not safe on UI thread
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                    mConnectedListener, null);
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        }
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    }
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    @Override
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    public void onClose() {
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        try {
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            if (mSynthConnector != null) {
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                mSynthConnector.close();
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                mSynthConnector = null;
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            }
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        } catch (IOException e) {
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            Log.e(MidiConstants.TAG, "Exception in closeSynthResources()", e);
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        }
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    }
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    /**
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     * @param myPortsConnectedListener
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     */
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    public void setConnectedListener(
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            MidiPortConnector.OnPortsConnectedListener connectedListener) {
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        mConnectedListener = connectedListener;
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    }
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}
Mar	APR	May
	09
2015	2016	2017
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MidiOutputPortConnectionSelector.java
