1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package com.android.server.usb.descriptors; 17 18 /** 19 * @hide 20 * An audio class-specific Feature Unit Interface 21 * see audio10.pdf section 3.5.5 22 */ 23 public final class UsbACFeatureUnit extends UsbACInterface { 24 private static final String TAG = "UsbACFeatureUnit"; 25 26 // audio10.pdf section 4.3.2.5 27 public static final int CONTROL_MASK_MUTE = 0x0001; 28 public static final int CONTROL_MASK_VOL = 0x0002; 29 public static final int CONTROL_MASK_BASS = 0x0004; 30 public static final int CONTROL_MASK_MID = 0x0008; 31 public static final int CONTROL_MASK_TREB = 0x0010; 32 public static final int CONTROL_MASK_EQ = 0x0020; 33 public static final int CONTROL_MASK_AGC = 0x0040; 34 public static final int CONTROL_MASK_DELAY = 0x0080; 35 public static final int CONTROL_MASK_BOOST = 0x0100; // BASS boost 36 public static final int CONTROL_MASK_LOUD = 0x0200; // LOUDNESS 37 38 private int mNumChannels; 39 40 private byte mUnitID; // 3:1 Constant uniquely identifying the Unit within the audio function. 41 // This value is used in all requests to address this Unit 42 private byte mSourceID; // 4:1 ID of the Unit or Terminal to which this Feature Unit 43 // is connected. 44 private byte mControlSize; // 5:1 Size in bytes of an element of the mControls array: n 45 private int[] mControls; // 6:? bitmask (see above) of supported controls in a given 46 // logical channel 47 private byte mUnitName; // ?:1 Index of a string descriptor, describing this Feature Unit. 48 49 public UsbACFeatureUnit(int length, byte type, byte subtype, int subClass) { 50 super(length, type, subtype, subClass); 51 } 52 53 public int getNumChannels() { 54 return mNumChannels; 55 } 56 57 public byte getUnitID() { 58 return mUnitID; 59 } 60 61 public byte getSourceID() { 62 return mSourceID; 63 } 64 65 public byte getControlSize() { 66 return mControlSize; 67 } 68 69 public int[] getControls() { 70 return mControls; 71 } 72 73 public byte getUnitName() { 74 return mUnitName; 75 } 76 } 77
