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 android.media.midi;
  
  import android.os.Parcel;
  import android.os.Parcelable;
  
  /**
   * This is an immutable class that describes the current status of a MIDI device's ports.
   */
  public final class MidiDeviceStatus implements Parcelable {
  
      private static final String TAG = "MidiDeviceStatus";
  
      private final MidiDeviceInfo mDeviceInfo;
      // true if input ports are open
      private final boolean mInputPortOpen[];
      // open counts for output ports
      private final int mOutputPortOpenCount[];
  
      /**
       * @hide
       */
      public MidiDeviceStatus(MidiDeviceInfo deviceInfo, boolean inputPortOpen[],
              int outputPortOpenCount[]) {
          // MidiDeviceInfo is immutable so we can share references
          mDeviceInfo = deviceInfo;
  
          // make copies of the arrays
          mInputPortOpen = new boolean[inputPortOpen.length];
          System.arraycopy(inputPortOpen, 0, mInputPortOpen, 0, inputPortOpen.length);
          mOutputPortOpenCount = new int[outputPortOpenCount.length];
          System.arraycopy(outputPortOpenCount, 0, mOutputPortOpenCount, 0,
                  outputPortOpenCount.length);
      }
  
      /**
       * Creates a MidiDeviceStatus with zero for all port open counts
       * @hide
       */
      public MidiDeviceStatus(MidiDeviceInfo deviceInfo) {
          mDeviceInfo = deviceInfo;
          mInputPortOpen = new boolean[deviceInfo.getInputPortCount()];
          mOutputPortOpenCount = new int[deviceInfo.getOutputPortCount()];
      }
  
      /**
       * Returns the {@link MidiDeviceInfo} of the device.
       *
       * @return the device info
       */
      public MidiDeviceInfo getDeviceInfo() {
          return mDeviceInfo;
      }
  
      /**
       * Returns true if an input port is open.
       * An input port can only be opened by one client at a time.
       *
       * @param portNumber the input port's port number
       * @return input port open status
       */
      public boolean isInputPortOpen(int portNumber) {
          return mInputPortOpen[portNumber];
      }
  
      /**
       * Returns the number of clients currently connected to the specified output port.
       * Unlike input ports, an output port can be opened by multiple clients at the same time.
       *
       * @param portNumber the output port's port number
       * @return output port open count
       */
      public int getOutputPortOpenCount(int portNumber) {
          return mOutputPortOpenCount[portNumber];
      }
  
      @Override
      public String toString() {
          int inputPortCount = mDeviceInfo.getInputPortCount();
          int outputPortCount = mDeviceInfo.getOutputPortCount();
          StringBuilder builder = new StringBuilder("mInputPortOpen=[");
          for (int i = 0; i < inputPortCount; i++) {
              builder.append(mInputPortOpen[i]);
              if (i < inputPortCount -1) {
                  builder.append(",");
              }
          }
          builder.append("] mOutputPortOpenCount=[");
          for (int i = 0; i < outputPortCount; i++) {
              builder.append(mOutputPortOpenCount[i]);
              if (i < outputPortCount -1) {
                  builder.append(",");
              }
          }
          builder.append("]");
          return builder.toString();
      }
  
      public static final @android.annotation.NonNull Parcelable.Creator<MidiDeviceStatus> CREATOR =
          new Parcelable.Creator<MidiDeviceStatus>() {
          public MidiDeviceStatus createFromParcel(Parcel in) {
              ClassLoader classLoader = MidiDeviceInfo.class.getClassLoader();
              MidiDeviceInfo deviceInfo = in.readParcelable(classLoader);
              boolean[] inputPortOpen = in.createBooleanArray();
              int[] outputPortOpenCount = in.createIntArray();
              return new MidiDeviceStatus(deviceInfo, inputPortOpen, outputPortOpenCount);
          }
  
          public MidiDeviceStatus[] newArray(int size) {
              return new MidiDeviceStatus[size];
          }
      };
  
      public int describeContents() {
          return 0;
      }
  
      public void writeToParcel(Parcel parcel, int flags) {
          parcel.writeParcelable(mDeviceInfo, flags);
          parcel.writeBooleanArray(mInputPortOpen);
          parcel.writeIntArray(mOutputPortOpenCount);
     }
  }
  