content: /*
   * Copyright (C) 2015 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.example.android.midisynth;
  
  import android.media.midi.MidiDeviceService;
  import android.media.midi.MidiDeviceStatus;
  import android.media.midi.MidiReceiver;
  
  import com.example.android.common.midi.synth.SynthEngine;
  
  public class MidiSynthDeviceService extends MidiDeviceService {
  
      private SynthEngine mSynthEngine = new SynthEngine();
      private boolean mSynthStarted = false;
  
      @Override
      public void onCreate() {
          super.onCreate();
      }
  
      @Override
      public void onDestroy() {
          mSynthEngine.stop();
          super.onDestroy();
      }
  
      @Override
      public MidiReceiver[] onGetInputPortReceivers() {
          return new MidiReceiver[]{mSynthEngine};
      }
  
      /**
       * This will get called when clients connect or disconnect.
       */
      @Override
      public void onDeviceStatusChanged(MidiDeviceStatus status) {
          if (status.isInputPortOpen(0) && !mSynthStarted) {
              mSynthEngine.start();
              mSynthStarted = true;
          } else if (!status.isInputPortOpen(0) && mSynthStarted) {
              mSynthEngine.stop();
              mSynthStarted = false;
          }
      }
  
  }
  