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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.Collections.Generic;
using System.Runtime.InteropServices;
using LibUsbDotNet.Descriptors;
namespace MonoLibUsb.Descriptors
{
/// <summary>
/// A structure representing the standard USB interface descriptor. This
/// descriptor is documented in section 9.6.5 of the USB 2.0 specification.
/// All multiple-byte fields are represented in host-endian format.
/// </summary>
[StructLayout(LayoutKind.Sequential, Pack = MonoUsbApi.LIBUSB_PACK)]
public class MonoUsbAltInterfaceDescriptor
{
///<summary>Size of this descriptor (in bytes)</summary>
public readonly Byte bLength;
///<summary>Descriptor type. Will have value LIBUSB_DT_INTERFACE in this context.</summary>
public readonly DescriptorType bDescriptorType;
///<summary>Number of this interface</summary>
public readonly Byte bInterfaceNumber;
///<summary>Value used to select this alternate setting for this interface</summary>
public readonly Byte bAlternateSetting;
///<summary> Number of endpoints used by this interface (excluding the control endpoint).</summary>
public readonly Byte bNumEndpoints;
///<summary> USB-IF class code for this interface. See ClassCodeType.</summary>
public readonly ClassCodeType bInterfaceClass;
///<summary> USB-IF subclass code for this interface, qualified by the bInterfaceClass value</summary>
public readonly Byte bInterfaceSubClass;
///<summary> USB-IF protocol code for this interface, qualified by the bInterfaceClass and bInterfaceSubClass values</summary>
public readonly Byte bInterfaceProtocol;
///<summary> Index of string descriptor describing this interface</summary>
public readonly Byte iInterface;
///<summary> Array of endpoint descriptors. This length of this array is determined by the bNumEndpoints field.</summary>
private readonly IntPtr pEndpointDescriptors;
///<summary> Extra descriptors. If libusb encounters unknown interface descriptors, it will store them here, should you wish to parse them.</summary>
private IntPtr pExtraBytes;
///<summary> Length of the extra descriptors, in bytes.</summary>
public readonly int ExtraLength;
///<summary> Extra descriptors. If libusb encounters unknown interface descriptors, it will store them here, should you wish to parse them.</summary>
public byte[] ExtraBytes
{
get
{
byte[] bytes = new byte[ExtraLength];
Marshal.Copy(pExtraBytes, bytes, 0, bytes.Length);
return bytes;
}
}
///<summary> Array of endpoint descriptors. This length of this array is determined by the bNumEndpoints field.</summary>
public List<MonoUsbEndpointDescriptor> EndpointList
{
get
{
List<MonoUsbEndpointDescriptor> endpointList = new List<MonoUsbEndpointDescriptor>();
int iEndpoint;
for (iEndpoint = 0; iEndpoint < bNumEndpoints; iEndpoint++)
{
IntPtr pNextInterface = new IntPtr(pEndpointDescriptors.ToInt64() + (Marshal.SizeOf(typeof (MonoUsbEndpointDescriptor))*iEndpoint));
MonoUsbEndpointDescriptor monoUsbEndpoint = new MonoUsbEndpointDescriptor();
Marshal.PtrToStructure(pNextInterface, monoUsbEndpoint);
endpointList.Add(monoUsbEndpoint);
}
return endpointList;
}
}
}
}
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