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.common.midi;
  
  import android.media.midi.MidiDeviceInfo;
  import android.media.midi.MidiDeviceInfo.PortInfo;
  import android.util.Log;
  
  // Wrapper for a MIDI device and port description.
  public class MidiPortWrapper {
      private MidiDeviceInfo mInfo;
      private int mPortIndex;
      private int mType;
      private String mString;
  
      /**
       * Wrapper for a MIDI device and port description.
       * @param info
       * @param portType
       * @param portIndex
       */
      public MidiPortWrapper(MidiDeviceInfo info, int portType, int portIndex) {
          mInfo = info;
          mType = portType;
          mPortIndex = portIndex;
      }
  
      private void updateString() {
          if (mInfo == null) {
              mString = "- - - - - -";
          } else {
              StringBuilder sb = new StringBuilder();
              String name = mInfo.getProperties()
                      .getString(MidiDeviceInfo.PROPERTY_NAME);
              if (name == null) {
                  name = mInfo.getProperties()
                          .getString(MidiDeviceInfo.PROPERTY_MANUFACTURER) + ", "
                          + mInfo.getProperties()
                                  .getString(MidiDeviceInfo.PROPERTY_PRODUCT);
              }
              sb.append("#" + mInfo.getId());
              sb.append(", ").append(name);
              PortInfo portInfo = findPortInfo();
              sb.append("[" + mPortIndex + "]");
              if (portInfo != null) {
                  sb.append(", ").append(portInfo.getName());
              } else {
                  sb.append(", null");
              }
              mString = sb.toString();
          }
      }
  
      /**
       * @param info
       * @param portIndex
       * @return
       */
      private PortInfo findPortInfo() {
          PortInfo[] ports = mInfo.getPorts();
          for (PortInfo portInfo : ports) {
              if (portInfo.getPortNumber() == mPortIndex
                      && portInfo.getType() == mType) {
                  return portInfo;
              }
          }
          return null;
      }
  
      public int getPortIndex() {
          return mPortIndex;
      }
  
      public MidiDeviceInfo getDeviceInfo() {
          return mInfo;
      }
  
      @Override
      public String toString() {
          if (mString == null) {
              updateString();
          }
          return mString;
      }
  
      @Override
      public boolean equals(Object other) {
          if (other == null)
              return false;
          if (!(other instanceof MidiPortWrapper))
              return false;
          MidiPortWrapper otherWrapper = (MidiPortWrapper) other;
          if (mPortIndex != otherWrapper.mPortIndex)
              return false;
          if (mType != otherWrapper.mType)
              return false;
          if (mInfo == null)
              return (otherWrapper.mInfo == null);
          return mInfo.equals(otherWrapper.mInfo);
      }
  
      @Override
      public int hashCode() {
          int hashCode = 1;
          hashCode = 31 * hashCode + mPortIndex;
          hashCode = 31 * hashCode + mType;
          hashCode = 31 * hashCode + mInfo.hashCode();
          return hashCode;
      }
  
  }
  