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 Format III interface.
   * see Frmts20.pdf section 2.3.1.6 2.3.3.1 Type III Format Type Descriptor
   */
  public final class Usb20ASFormatIII extends UsbASFormat {
      private static final String TAG = "Usb20ASFormatIII";
  
      // frmts20.pdf Table 2-4: Type III Format Type Descriptor
      private byte mSubslotSize;      // 4:1 The number of bytes occupied by one
                                      // audio subslot. Must be set to two.
      private byte mBitResolution;    // 5:1 The number of effectively used bits from
                                      // the available bits in an audio subframe.
  
      public Usb20ASFormatIII(int length, byte type, byte subtype, byte formatType, int subclass) {
          super(length, type, subtype, formatType, subclass);
      }
  
      public byte getSubslotSize() {
          return mSubslotSize;
      }
  
      public byte getBitResolution() {
          return mBitResolution;
      }
  
      @Override
      public int parseRawDescriptors(ByteStream stream) {
          mSubslotSize = stream.getByte();
          mBitResolution = stream.getByte();
  
          return mLength;
      }
  
      @Override
      public void report(ReportCanvas canvas) {
          super.report(canvas);
  
          canvas.openList();
          canvas.writeListItem("Subslot Size: " + getSubslotSize());
          canvas.writeListItem("Bit Resolution: " + getBitResolution());
          canvas.closeList();
      }
  }
  