| /* |
| * 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; |
| import com.android.server.usb.descriptors.report.UsbStrings; |
| |
| /** |
| * @hide |
| * An audio class-specific General interface. |
| * see audio10.pdf section 4.5.2 |
| */ |
| public final class Usb10ASGeneral extends UsbACInterface { |
| private static final String TAG = "Usb10ASGeneral"; |
| |
| // audio10.pdf - section 4.5.2 |
| private byte mTerminalLink; // 3:1 The Terminal ID of the Terminal to which the endpoint |
| // of this interface is connected. |
| private byte mDelay; // 4:1 Delay introduced by the data path (see Section 3.4, |
| // “Inter Channel Synchronization”). Expressed in number of frames. |
| private int mFormatTag; // 5:2 The Audio Data Format that has to be used to communicate |
| // with this interface. |
| |
| public Usb10ASGeneral(int length, byte type, byte subtype, int subclass) { |
| super(length, type, subtype, subclass); |
| } |
| |
| public byte getTerminalLink() { |
| return mTerminalLink; |
| } |
| |
| public byte getDelay() { |
| return mDelay; |
| } |
| |
| public int getFormatTag() { |
| return mFormatTag; |
| } |
| |
| @Override |
| public int parseRawDescriptors(ByteStream stream) { |
| mTerminalLink = stream.getByte(); |
| mDelay = stream.getByte(); |
| mFormatTag = stream.unpackUsbShort(); |
| |
| return mLength; |
| } |
| |
| @Override |
| public void report(ReportCanvas canvas) { |
| super.report(canvas); |
| |
| canvas.openList(); |
| canvas.writeListItem("Delay: " + mDelay); |
| canvas.writeListItem("Terminal Link: " + mTerminalLink); |
| canvas.writeListItem("Format: " + UsbStrings.getAudioFormatName(mFormatTag) + " - " |
| + ReportCanvas.getHexString(mFormatTag)); |
| canvas.closeList(); |
| } |
| } |