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;
  
  /**
   * @hide
   * An audio class-specific Feature Unit Interface
   * see audio10.pdf section 3.5.5
   */
  public final class UsbACFeatureUnit extends UsbACInterface {
      private static final String TAG = "UsbACFeatureUnit";
  
      // audio10.pdf section 4.3.2.5
      public static final int CONTROL_MASK_MUTE =    0x0001;
      public static final int CONTROL_MASK_VOL =     0x0002;
      public static final int CONTROL_MASK_BASS =    0x0004;
      public static final int CONTROL_MASK_MID =     0x0008;
      public static final int CONTROL_MASK_TREB =    0x0010;
      public static final int CONTROL_MASK_EQ =      0x0020;
      public static final int CONTROL_MASK_AGC =     0x0040;
      public static final int CONTROL_MASK_DELAY =   0x0080;
      public static final int CONTROL_MASK_BOOST =   0x0100; // BASS boost
      public static final int CONTROL_MASK_LOUD =    0x0200; // LOUDNESS
  
      private int mNumChannels;
  
      private byte mUnitID;   // 3:1 Constant uniquely identifying the Unit within the audio function.
                              // This value is used in all requests to address this Unit
      private byte mSourceID; // 4:1 ID of the Unit or Terminal to which this Feature Unit
                              // is connected.
      private byte mControlSize;  // 5:1 Size in bytes of an element of the mControls array: n
      private int[] mControls;    // 6:? bitmask (see above) of supported controls in a given
                                  // logical channel
      private byte mUnitName;     // ?:1 Index of a string descriptor, describing this Feature Unit.
  
      public UsbACFeatureUnit(int length, byte type, byte subtype, int subClass) {
          super(length, type, subtype, subClass);
      }
  
      public int getNumChannels() {
          return mNumChannels;
      }
  
      public byte getUnitID() {
          return mUnitID;
      }
  
      public byte getSourceID() {
          return mSourceID;
      }
  
      public byte getControlSize() {
          return mControlSize;
      }
  
      public int[] getControls() {
          return mControls;
      }
  
      public byte getUnitName() {
          return mUnitName;
      }
  }
  