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;
  
  public class UsbACMixerUnit extends UsbACInterface {
      private static final String TAG = "UsbACMixerUnit";
  
      protected byte mUnitID;         // 3:1
      protected byte mNumInputs;      // 4:1 Number of Input Pins of this Unit.
      protected byte[] mInputIDs;     // 5...:1 ID of the Unit or Terminal to which the Input Pins
                                      // are connected.
      protected byte mNumOutputs;     // The number of output channels
  
      public UsbACMixerUnit(int length, byte type, byte subtype, int subClass) {
          super(length, type, subtype, subClass);
      }
  
      public byte getUnitID() {
          return mUnitID;
      }
  
      public byte getNumInputs() {
          return mNumInputs;
      }
  
      public byte[] getInputIDs() {
          return mInputIDs;
      }
  
      public byte getNumOutputs() {
          return mNumOutputs;
      }
  
      protected static int calcControlArraySize(int numInputs, int numOutputs) {
          int totalChannels = numInputs * numOutputs;
          return (totalChannels + 7) / 8;
      }
  
      @Override
      public int parseRawDescriptors(ByteStream stream) {
          mUnitID = stream.getByte();
          mNumInputs = stream.getByte();
          mInputIDs = new byte[mNumInputs];
          for (int input = 0; input < mNumInputs; input++) {
              mInputIDs[input] = stream.getByte();
          }
          mNumOutputs = stream.getByte();
  
          return mLength;
      }
  }
  