| /* |
| * 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; |
| |
| /** |
| * Audio20.pdf - 4.9.2 Class-Specific AS Interface Descriptor |
| * 16 bytes |
| */ |
| public final class Usb20ASGeneral extends UsbACInterface { |
| private static final String TAG = "Usb20ASGeneral"; |
| |
| // Audio20.pdf - Table 4-27 |
| private byte mTerminalLink; // 3:1 The Terminal ID of the Terminal to which |
| // this interface is connected. |
| private byte mControls; // 4:1 see audio20.pdf Table 4-27 |
| private byte mFormatType; // 5:1 Constant identifying the Format Type the |
| // AudioStreaming interface is using. |
| private int mFormats; // 6:4 The Audio Data Format(s) that can be |
| // used to communicate with this interface. |
| // See the USB Audio Data Formats |
| // document for further details. |
| private byte mNumChannels; // 10:1 Number of physical channels in the AS |
| // Interface audio channel cluster. |
| private int mChannelConfig; // 11:4 Describes the spatial location of the |
| // physical channels. |
| private byte mChannelNames; // 15:1 Index of a string descriptor, describing the |
| // name of the first physical channel. |
| |
| public Usb20ASGeneral(int length, byte type, byte subtype, byte subclass) { |
| super(length, type, subtype, subclass); |
| } |
| |
| public byte getTerminalLink() { |
| return mTerminalLink; |
| } |
| |
| public byte getControls() { |
| return mControls; |
| } |
| |
| public byte getFormatType() { |
| return mFormatType; |
| } |
| |
| public int getFormats() { |
| return mFormats; |
| } |
| |
| public byte getNumChannels() { |
| return mNumChannels; |
| } |
| |
| public int getChannelConfig() { |
| return mChannelConfig; |
| } |
| |
| public byte getChannelNames() { |
| return mChannelNames; |
| } |
| |
| @Override |
| public int parseRawDescriptors(ByteStream stream) { |
| |
| mTerminalLink = stream.getByte(); |
| mControls = stream.getByte(); |
| mFormatType = stream.getByte(); |
| mFormats = stream.unpackUsbInt(); |
| mNumChannels = stream.getByte(); |
| mChannelConfig = stream.unpackUsbInt(); |
| mChannelNames = stream.getByte(); |
| |
| return mLength; |
| } |
| |
| @Override |
| public void report(ReportCanvas canvas) { |
| super.report(canvas); |
| |
| canvas.openList(); |
| canvas.writeListItem("Terminal Link: " + getTerminalLink()); |
| canvas.writeListItem("Controls: " + ReportCanvas.getHexString(getControls())); |
| canvas.writeListItem("Format Type: " + ReportCanvas.getHexString(getFormatType())); |
| canvas.writeListItem("Formats: " + ReportCanvas.getHexString(getFormats())); |
| canvas.writeListItem("Num Channels: " + getNumChannels()); |
| canvas.writeListItem("Channel Config: " + ReportCanvas.getHexString(getChannelConfig())); |
| canvas.writeListItem("Channel Names String ID: " + getChannelNames()); |
| canvas.closeList(); |
| } |
| } |