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// Copyright © 2006-2010 Travis Robinson. All rights reserved.
//
// website: http://sourceforge.net/projects/libusbdotnet
// e-mail: libusbdotnet@gmail.com
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. or
// visit www.gnu.org.
//
//
using System;
using System.Timers;
using LibUsbDotNet.LudnMonoLibUsb;
using MonoLibUsb.Profile;
namespace LibUsbDotNet.DeviceNotify.Linux
{
public partial class LinuxDeviceNotifier
{
///<summary>
/// The interval (milliseconds) in which the device list is queried for changes when using the <see cref="LinuxDeviceNotifierMode.PollDeviceList"/> mode.
///</summary>
public static int PollingInterval = 750;
private Timer mDeviceListPollTimer;
private object PollTimerLock = new object();
private void StartDeviceListPolling()
{
lock (PollTimerLock)
{
if (mDeviceListPollTimer != null) return;
MonoUsbDevice.RefreshProfileList();
MonoUsbDevice.ProfileList.AddRemoveEvent += OnAddRemoveEvent;
mDeviceListPollTimer = new Timer(PollingInterval);
mDeviceListPollTimer.Elapsed += PollTimer_Elapsed;
mDeviceListPollTimer.Start();
}
}
private void PollTimer_Elapsed(object sender, ElapsedEventArgs e)
{
lock (PollTimerLock)
{
mDeviceListPollTimer.Stop();
MonoUsbDevice.RefreshProfileList();
mDeviceListPollTimer.Start();
}
}
private void StopDeviceListPolling()
{
lock (PollTimerLock)
{
if (mDeviceListPollTimer == null) return;
mDeviceListPollTimer.Stop();
mDeviceListPollTimer.Elapsed -= PollTimer_Elapsed;
mDeviceListPollTimer.Dispose();
MonoUsbDevice.ProfileList.AddRemoveEvent -= OnAddRemoveEvent;
mDeviceListPollTimer = null;
}
}
private void OnAddRemoveEvent(object sender, AddRemoveEventArgs e)
{
EventHandler<DeviceNotifyEventArgs> deviceNotify = OnDeviceNotify;
if (!ReferenceEquals(deviceNotify, null))
{
string deviceFileName = String.Format("usbdev{0}.{1}", e.MonoUSBProfile.BusNumber, e.MonoUSBProfile.DeviceAddress);
LinuxDevItem linuxDevItem = new LinuxDevItem(deviceFileName,
e.MonoUSBProfile.BusNumber,
e.MonoUSBProfile.DeviceAddress,
e.MonoUSBProfile.DeviceDescriptor);
deviceNotify(this,
new LinuxDeviceNotifyEventArgs(linuxDevItem,
DeviceType.DeviceInterface,
e.EventType == AddRemoveType.Added
? EventType.DeviceArrival
: EventType.DeviceRemoveComplete));
}
}
}
}
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