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// Copyright © 2006-2009 Travis Robinson. All rights reserved.
//
// website: 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.
//
//
namespace LibUsbDotNet.Main
{
/// <summary> The locking strategy for endpoint 0 operations in regards to any pending endpoint data operations.
/// </summary>
/// <remarks> Some USB devices have problems handling endpoint 0 control messages when other endpoints on the device have pending IO operations.
/// Must be combined with <see cref="LibUsbDotNet.Main.DeviceLockType.Locked"/>.
/// </remarks>
public enum ControlEpLockType
{
/// <summary>
/// Endpoint 0 transfers do not interfere with data endpoint transfers in any way. This is the default.
/// </summary>
None,
/// <summary>
/// If data endpoints for the device remain busy for longer than <see cref="UsbDevice.DeviceLockTimeout"/>, then force an IO cancel operation for the busy endpoints.
/// </summary>
/// <remarks>
/// There is a potential for loss of data when using this option.
/// This will immediately cancel pending I/O transfers on all data endpoints when a enpoint 0 control transfer is initiated.
/// </remarks>
CancelIoOnLockTimeout,
/// <summary>
/// If data endpoints for the device remain busy for longer than <see cref="UsbDevice.DeviceLockTimeout"/>, then consider the remaining endpoints with IO pending operation as idle and continue with operation.
/// This option is the same as ErrorOnLockTimeout only instead of returning with an error after the lock timeout period, an attempt is made to transfer data anyways. (Ignoring the lock)
/// </summary>
ContinueOnLockTimeout,
/// <summary>
/// If data endpoints for the device remain busy for longer than <see cref="UsbDevice.DeviceLockTimeout"/>, then return a LockTimeout error code.
/// Setting this value will lock ALL the devices data endpoints (1-15) before transfering data to the control enpoint 0.
/// </summary>
ErrorOnLockTimeout
}
}
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