| /* |
| * 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 Input Terminal interface. |
| * see Audio20.pdf section 3.13.2 Input Terminal |
| */ |
| public final class Usb20ACInputTerminal extends UsbACTerminal { |
| private static final String TAG = "Usb20ACInputTerminal"; |
| |
| // See Audio20.pdf - Table 4-9 |
| // Always 17 bytes |
| private byte mClkSourceID; // 7:1 - ID of the Clock Entity to which this Input |
| // Terminal is connected. |
| private byte mNumChannels; // 8:1 - Number of logical output channels in the |
| // Terminal’s output audio channel cluster. |
| private int mChanConfig; // 9:4 - Describes the spatial location of the |
| // logical channels. |
| private byte mChanNames; // 13:1 - Index of a string descriptor, describing the |
| // name of the first logical channel. |
| private int mControls; // 14:2 - Bitmask (see Audio20.pdf Table 4-9) |
| private byte mTerminalName; // 16:1 - Index of a string descriptor, describing the |
| // Input Terminal. |
| |
| public Usb20ACInputTerminal(int length, byte type, byte subtype, byte subclass) { |
| super(length, type, subtype, subclass); |
| } |
| |
| public byte getClkSourceID() { |
| return mClkSourceID; |
| } |
| |
| public byte getNumChannels() { |
| return mNumChannels; |
| } |
| |
| public int getChanConfig() { |
| return mChanConfig; |
| } |
| |
| public int getControls() { |
| return mControls; |
| } |
| |
| @Override |
| public int parseRawDescriptors(ByteStream stream) { |
| super.parseRawDescriptors(stream); |
| |
| mClkSourceID = stream.getByte(); |
| mNumChannels = stream.getByte(); |
| mChanConfig = stream.unpackUsbInt(); |
| mChanNames = stream.getByte(); |
| mControls = stream.unpackUsbShort(); |
| mTerminalName = stream.getByte(); |
| |
| return mLength; |
| } |
| |
| @Override |
| public void report(ReportCanvas canvas) { |
| super.report(canvas); |
| |
| canvas.openList(); |
| canvas.writeListItem("Clock Source: " + getClkSourceID()); |
| canvas.writeListItem("" + getNumChannels() + " Channels. Config: " |
| + ReportCanvas.getHexString(getChanConfig())); |
| canvas.closeList(); |
| } |
| } |