content: /*
   * Copyright (C) 2017 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.android.server.usb.descriptors;
  
  import com.android.server.usb.descriptors.report.ReportCanvas;
  
  /**
   * @hide
   * An audio class-specific Interface Header super class.
   * see audio10.pdf section 4.3.2 & Audio20.pdf section 4.7.2
   */
  public abstract class UsbACHeaderInterface extends UsbACInterface {
      private static final String TAG = "UsbACHeaderInterface";
  
      protected int mADCRelease;  // Audio Device Class Specification Release (BCD).
      protected int mTotalLength; // Total number of bytes returned for the class-specific
                                  // AudioControl interface descriptor. Includes the combined length
                                  // of this descriptor header and all Unit and Terminal descriptors.
  
      public UsbACHeaderInterface(
              int length, byte type, byte subtype, int subclass, int adcRelease) {
          super(length, type, subtype, subclass);
          mADCRelease = adcRelease;
      }
  
      public int getADCRelease() {
          return mADCRelease;
      }
  
      public int getTotalLength() {
          return mTotalLength;
      }
  
      @Override
      public void report(ReportCanvas canvas) {
          super.report(canvas);
  
          canvas.openList();
          canvas.writeListItem("Release: " + ReportCanvas.getBCDString(getADCRelease()));
          canvas.writeListItem("Total Length: " + getTotalLength());
          canvas.closeList();
      }
  }
  