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;
  import com.android.server.usb.descriptors.report.UsbStrings;
  
  /**
   * @hide
   */
  public abstract class UsbACTerminal extends UsbACInterface {
      private static final String TAG = "UsbACTerminal";
  
      // Note that these fields are the same for both the
      // audio class-specific Output Terminal Interface.(audio10.pdf section 4.3.2.2)
      // and audio class-specific Input Terminal interface.(audio10.pdf section 4.3.2.1)
      // so we may as well unify the parsing here.
      protected byte mTerminalID;       // 3:1 ID of this Output Terminal. (0x02)
      protected int mTerminalType;      // 4:2 USB Streaming. (0x0101)
      protected byte mAssocTerminal;    // 6:1 Unused (0x00)
  
      public UsbACTerminal(int length, byte type, byte subtype, int subclass) {
          super(length, type, subtype, subclass);
      }
  
      public byte getTerminalID() {
          return mTerminalID;
      }
  
      public int getTerminalType() {
          return mTerminalType;
      }
  
      public byte getAssocTerminal() {
          return mAssocTerminal;
      }
  
      @Override
      public int parseRawDescriptors(ByteStream stream) {
          mTerminalID = stream.getByte();
          mTerminalType = stream.unpackUsbShort();
          mAssocTerminal = stream.getByte();
  
          return mLength;
      }
  
      @Override
      public void report(ReportCanvas canvas) {
          super.report(canvas);
  
          canvas.openList();
          int terminalType = getTerminalType();
          canvas.writeListItem("Type: " + ReportCanvas.getHexString(terminalType) + ": "
                  + UsbStrings.getTerminalName(terminalType));
          canvas.writeListItem("ID: " + ReportCanvas.getHexString(getTerminalID()));
          canvas.closeList();
      }
  }
  