| /* |
| * 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, byte 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; |
| } |
| } |