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.media.midi.MidiDeviceInfo; 20 import android.media.midi.MidiDeviceInfo.PortInfo; 21 import android.util.Log; 22 23 // Wrapper for a MIDI device and port description. 24 public class MidiPortWrapper { 25 private MidiDeviceInfo mInfo; 26 private int mPortIndex; 27 private int mType; 28 private String mString; 29 30 /** 31 * Wrapper for a MIDI device and port description. 32 * @param info 33 * @param portType 34 * @param portIndex 35 */ MidiPortWrapper(MidiDeviceInfo info, int portType, int portIndex)36 public MidiPortWrapper(MidiDeviceInfo info, int portType, int portIndex) { 37 mInfo = info; 38 mType = portType; 39 mPortIndex = portIndex; 40 } 41 updateString()42 private void updateString() { 43 if (mInfo == null) { 44 mString = "- - - - - -"; 45 } else { 46 StringBuilder sb = new StringBuilder(); 47 String name = mInfo.getProperties() 48 .getString(MidiDeviceInfo.PROPERTY_NAME); 49 if (name == null) { 50 name = mInfo.getProperties() 51 .getString(MidiDeviceInfo.PROPERTY_MANUFACTURER) + ", " 52 + mInfo.getProperties() 53 .getString(MidiDeviceInfo.PROPERTY_PRODUCT); 54 } 55 sb.append("#" + mInfo.getId()); 56 sb.append(", ").append(name); 57 PortInfo portInfo = findPortInfo(); 58 sb.append("[" + mPortIndex + "]"); 59 if (portInfo != null) { 60 sb.append(", ").append(portInfo.getName()); 61 } else { 62 sb.append(", null"); 63 } 64 mString = sb.toString(); 65 } 66 } 67 68 /** 69 * @param info 70 * @param portIndex 71 * @return 72 */ findPortInfo()73 private PortInfo findPortInfo() { 74 PortInfo[] ports = mInfo.getPorts(); 75 for (PortInfo portInfo : ports) { 76 if (portInfo.getPortNumber() == mPortIndex 77 && portInfo.getType() == mType) { 78 return portInfo; 79 } 80 } 81 return null; 82 } 83 getPortIndex()84 public int getPortIndex() { 85 return mPortIndex; 86 } 87 getDeviceInfo()88 public MidiDeviceInfo getDeviceInfo() { 89 return mInfo; 90 } 91 92 @Override toString()93 public String toString() { 94 if (mString == null) { 95 updateString(); 96 } 97 return mString; 98 } 99 100 @Override equals(Object other)101 public boolean equals(Object other) { 102 if (other == null) 103 return false; 104 if (!(other instanceof MidiPortWrapper)) 105 return false; 106 MidiPortWrapper otherWrapper = (MidiPortWrapper) other; 107 if (mPortIndex != otherWrapper.mPortIndex) 108 return false; 109 if (mType != otherWrapper.mType) 110 return false; 111 if (mInfo == null) 112 return (otherWrapper.mInfo == null); 113 return mInfo.equals(otherWrapper.mInfo); 114 } 115 116 @Override hashCode()117 public int hashCode() { 118 int hashCode = 1; 119 hashCode = 31 * hashCode + mPortIndex; 120 hashCode = 31 * hashCode + mType; 121 hashCode = 31 * hashCode + mInfo.hashCode(); 122 return hashCode; 123 } 124 125 } 126