kopia lustrzana https://github.com/mik3y/usb-serial-for-android
109 wiersze
3.6 KiB
Java
109 wiersze
3.6 KiB
Java
/* Copyright 2011-2013 Google Inc.
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* Copyright 2013 mike wakerly <opensource@hoho.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*
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* Project home page: https://github.com/mik3y/usb-serial-for-android
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*/
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package com.hoho.android.usbserial.driver;
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import android.util.Pair;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.util.LinkedHashMap;
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import java.util.Map;
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/**
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* Maps (vendor id, product id) pairs to the corresponding serial driver.
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*
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* @author mike wakerly (opensource@hoho.com)
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*/
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public class ProbeTable {
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private final Map<Pair<Integer, Integer>, Class<? extends UsbSerialDriver>> mProbeTable =
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new LinkedHashMap<Pair<Integer,Integer>, Class<? extends UsbSerialDriver>>();
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/**
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* Adds or updates a (vendor, product) pair in the table.
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*
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* @param vendorId the USB vendor id
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* @param productId the USB product id
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* @param driverClass the driver class responsible for this pair
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* @return {@code this}, for chaining
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*/
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public ProbeTable addProduct(int vendorId, int productId,
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Class<? extends UsbSerialDriver> driverClass) {
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mProbeTable.put(Pair.create(vendorId, productId), driverClass);
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return this;
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}
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/**
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* Internal method to add all supported products from
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* {@code getSupportedProducts} static method.
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*
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* @param driverClass
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* @return
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*/
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@SuppressWarnings("unchecked")
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ProbeTable addDriver(Class<? extends UsbSerialDriver> driverClass) {
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final Method method;
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try {
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method = driverClass.getMethod("getSupportedDevices");
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} catch (SecurityException e) {
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throw new RuntimeException(e);
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} catch (NoSuchMethodException e) {
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throw new RuntimeException(e);
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}
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final Map<Integer, int[]> devices;
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try {
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devices = (Map<Integer, int[]>) method.invoke(null);
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} catch (IllegalArgumentException e) {
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throw new RuntimeException(e);
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} catch (IllegalAccessException e) {
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throw new RuntimeException(e);
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} catch (InvocationTargetException e) {
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throw new RuntimeException(e);
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}
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for (Map.Entry<Integer, int[]> entry : devices.entrySet()) {
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final int vendorId = entry.getKey().intValue();
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for (int productId : entry.getValue()) {
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addProduct(vendorId, productId, driverClass);
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}
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}
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return this;
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}
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/**
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* Returns the driver for the given (vendor, product) pair, or {@code null}
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* if no match.
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*
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* @param vendorId the USB vendor id
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* @param productId the USB product id
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* @return the driver class matching this pair, or {@code null}
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*/
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public Class<? extends UsbSerialDriver> findDriver(int vendorId, int productId) {
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final Pair<Integer, Integer> pair = Pair.create(vendorId, productId);
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return mProbeTable.get(pair);
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}
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}
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