| /* |
| * 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 android.midi.cts; |
| |
| import android.media.midi.MidiDeviceService; |
| import android.media.midi.MidiDeviceStatus; |
| import android.media.midi.MidiReceiver; |
| |
| import java.io.IOException; |
| |
| /** |
| * Virtual MIDI Device that copies its input to its output. |
| * This is used for loop-back testing of MIDI I/O. |
| */ |
| |
| public class MidiEchoTestService extends MidiDeviceService { |
| |
| // Other apps will write to this port. |
| private MidiReceiver mInputReceiver = new MyReceiver(); |
| // This app will copy the data to this port. |
| private MidiReceiver mOutputReceiver; |
| private static MidiEchoTestService mInstance; |
| |
| // These are public so we can easily read them from CTS test. |
| public int statusChangeCount; |
| public boolean inputOpened; |
| public int outputOpenCount; |
| |
| @Override |
| public void onCreate() { |
| super.onCreate(); |
| mInstance = this; |
| } |
| |
| @Override |
| public void onDestroy() { |
| super.onDestroy(); |
| } |
| |
| // For CTS testing, so I can read test fields. |
| public static MidiEchoTestService getInstance() { |
| return mInstance; |
| } |
| |
| @Override |
| public MidiReceiver[] onGetInputPortReceivers() { |
| return new MidiReceiver[] { mInputReceiver }; |
| } |
| |
| class MyReceiver extends MidiReceiver { |
| @Override |
| public void onSend(byte[] data, int offset, int count, long timestamp) |
| throws IOException { |
| if (mOutputReceiver == null) { |
| mOutputReceiver = getOutputPortReceivers()[0]; |
| } |
| // Copy input to output. |
| mOutputReceiver.send(data, offset, count, timestamp); |
| } |
| } |
| |
| @Override |
| public void onDeviceStatusChanged(MidiDeviceStatus status) { |
| statusChangeCount++; |
| inputOpened = status.isInputPortOpen(0); |
| outputOpenCount = status.getOutputPortOpenCount(0); |
| } |
| } |