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/*
* 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 android.hardware.usb.UsbConfiguration;
import android.hardware.usb.UsbDevice;
import android.util.Log;
import com.android.server.usb.descriptors.report.ReportCanvas;
import com.android.server.usb.descriptors.report.UsbStrings;
import java.util.ArrayList;
/**
* @hide
* A USB Device Descriptor.
* see usb11.pdf section 9.6.1
*/
public final class UsbDeviceDescriptor extends UsbDescriptor {
private static final String TAG = "UsbDeviceDescriptor";
private static final boolean DEBUG = false;
public static final int USBSPEC_1_0 = 0x0100;
public static final int USBSPEC_1_1 = 0x0110;
public static final int USBSPEC_2_0 = 0x0200;
private int mSpec; // 2:2 bcdUSB 2 BCD USB Specification Number - BCD
private int mDevClass; // 4:1 class code
private int mDevSubClass; // 5:1 subclass code
private int mProtocol; // 6:1 protocol
private byte mPacketSize; // 7:1 Maximum Packet Size for Zero Endpoint.
// Valid Sizes are 8, 16, 32, 64
private int mVendorID; // 8:2 vendor ID
private int mProductID; // 10:2 product ID
private int mDeviceRelease; // 12:2 Device Release number - BCD
private byte mMfgIndex; // 14:1 Index of Manufacturer String Descriptor
private byte mProductIndex; // 15:1 Index of Product String Descriptor
private byte mSerialNum; // 16:1 Index of Serial Number String Descriptor
private byte mNumConfigs; // 17:1 Number of Possible Configurations
private ArrayList<UsbConfigDescriptor> mConfigDescriptors =
new ArrayList<UsbConfigDescriptor>();
UsbDeviceDescriptor(int length, byte type) {
super(length, type);
mHierarchyLevel = 1;
}
public int getSpec() {
return mSpec;
}
public int getDevClass() {
return mDevClass;
}
public int getDevSubClass() {
return mDevSubClass;
}
public int getProtocol() {
return mProtocol;
}
public byte getPacketSize() {
return mPacketSize;
}
public int getVendorID() {
return mVendorID;
}
public int getProductID() {
return mProductID;
}
public int getDeviceRelease() {
return mDeviceRelease;
}
public byte getMfgIndex() {
return mMfgIndex;
}
public byte getProductIndex() {
return mProductIndex;
}
public byte getSerialNum() {
return mSerialNum;
}
public byte getNumConfigs() {
return mNumConfigs;
}
void addConfigDescriptor(UsbConfigDescriptor config) {
mConfigDescriptors.add(config);
}
/**
* @hide
*/
public UsbDevice toAndroid(UsbDescriptorParser parser) {
if (DEBUG) {
Log.d(TAG, "toAndroid()");
}
String mfgName = parser.getDescriptorString(mMfgIndex);
String prodName = parser.getDescriptorString(mProductIndex);
if (DEBUG) {
Log.d(TAG, " mfgName:" + mfgName + " prodName:" + prodName);
}
// Create version string in "%.%" format
String versionString =
Integer.toString(mDeviceRelease >> 8) + "." + (mDeviceRelease & 0xFF);
String serialStr = parser.getDescriptorString(mSerialNum);
if (DEBUG) {
Log.d(TAG, " versionString:" + versionString + " serialStr:" + serialStr);
}
UsbDevice device = new UsbDevice(parser.getDeviceAddr(), mVendorID, mProductID,
mDevClass, mDevSubClass,
mProtocol, mfgName, prodName,
versionString, serialStr);
UsbConfiguration[] configs = new UsbConfiguration[mConfigDescriptors.size()];
Log.d(TAG, " " + configs.length + " configs");
for (int index = 0; index < mConfigDescriptors.size(); index++) {
configs[index] = mConfigDescriptors.get(index).toAndroid(parser);
}
device.setConfigurations(configs);
return device;
}
@Override
public int parseRawDescriptors(ByteStream stream) {
mSpec = stream.unpackUsbShort();
mDevClass = stream.getUnsignedByte();
mDevSubClass = stream.getUnsignedByte();
mProtocol = stream.getUnsignedByte();
mPacketSize = stream.getByte();
mVendorID = stream.unpackUsbShort();
mProductID = stream.unpackUsbShort();
mDeviceRelease = stream.unpackUsbShort();
mMfgIndex = stream.getByte();
mProductIndex = stream.getByte();
mSerialNum = stream.getByte();
mNumConfigs = stream.getByte();
return mLength;
}
@Override
public void report(ReportCanvas canvas) {
super.report(canvas);
canvas.openList();
int spec = getSpec();
canvas.writeListItem("Spec: " + ReportCanvas.getBCDString(spec));
int devClass = getDevClass();
String classStr = UsbStrings.getClassName(devClass);
int devSubClass = getDevSubClass();
String subClasStr = UsbStrings.getClassName(devSubClass);
canvas.writeListItem("Class " + devClass + ": " + classStr + " Subclass"
+ devSubClass + ": " + subClasStr);
canvas.writeListItem("Vendor ID: " + ReportCanvas.getHexString(getVendorID())
+ " Product ID: " + ReportCanvas.getHexString(getProductID())
+ " Product Release: " + ReportCanvas.getBCDString(getDeviceRelease()));
UsbDescriptorParser parser = canvas.getParser();
byte mfgIndex = getMfgIndex();
String manufacturer = parser.getDescriptorString(mfgIndex);
byte productIndex = getProductIndex();
String product = parser.getDescriptorString(productIndex);
canvas.writeListItem("Manufacturer " + mfgIndex + ": " + manufacturer
+ " Product " + productIndex + ": " + product);
canvas.closeList();
}
}
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