internal static List <UsbConfigInfo> GetDeviceConfigs(UsbDevice usbDevice)
{
List <UsbConfigInfo> rtnConfigs = new List <UsbConfigInfo>();
byte[] cfgBuffer = new byte[UsbConstants.MAX_CONFIG_SIZE];
int iConfigs = usbDevice.Info.Descriptor.ConfigurationCount;
for (int iConfig = 0; iConfig < iConfigs; iConfig++)
{
int iBytesTransmitted;
bool bSuccess = usbDevice.GetDescriptor((byte)DescriptorType.Configuration, 0, 0, cfgBuffer, cfgBuffer.Length, out iBytesTransmitted);
if (bSuccess)
{
if (iBytesTransmitted >= UsbConfigDescriptor.Size && cfgBuffer[1] == (byte)DescriptorType.Configuration)
{
UsbConfigDescriptor configDescriptor = new UsbConfigDescriptor();
Helper.BytesToObject(cfgBuffer, 0, Math.Min(UsbConfigDescriptor.Size, cfgBuffer[0]), configDescriptor);
if (configDescriptor.TotalLength == iBytesTransmitted)
{
List <byte[]> rawDescriptorList = new List <byte[]>();
int iRawLengthPosition = configDescriptor.Length;
while (iRawLengthPosition < configDescriptor.TotalLength)
{
byte[] rawDescriptor = new byte[cfgBuffer[iRawLengthPosition]];
if (iRawLengthPosition + rawDescriptor.Length > iBytesTransmitted)
{
throw new UsbException(usbDevice, "Descriptor length is out of range.");
}
Array.Copy(cfgBuffer, iRawLengthPosition, rawDescriptor, 0, rawDescriptor.Length);
rawDescriptorList.Add(rawDescriptor);
iRawLengthPosition += rawDescriptor.Length;
}
rtnConfigs.Add(new UsbConfigInfo(usbDevice, configDescriptor, ref rawDescriptorList));
}
else
{
UsbError.Error(ErrorCode.InvalidConfig,
0,
"GetDeviceConfigs: USB config descriptor length doesn't match the length received.",
usbDevice);
}
}
else
{
UsbError.Error(ErrorCode.InvalidConfig, 0, "GetDeviceConfigs: USB config descriptor is invalid.", usbDevice);
}
}
else
{
UsbError.Error(ErrorCode.InvalidConfig, 0, "GetDeviceConfigs", usbDevice);
}
}
return(rtnConfigs);
}
internal UsbConfigInfo(MonoUsbDevice usbDevice, MonoUsbConfigDescriptor configDescriptor)
{
mUsbDevice = usbDevice;
mUsbConfigDescriptor = new UsbConfigDescriptor(configDescriptor);
List <MonoUsbInterface> monoUSBInterfaces = configDescriptor.InterfaceList;
foreach (MonoUsbInterface usbInterface in monoUSBInterfaces)
{
List <MonoUsbAltInterfaceDescriptor> monoUSBAltInterfaces = usbInterface.AltInterfaceList;
foreach (MonoUsbAltInterfaceDescriptor monoUSBAltInterface in monoUSBAltInterfaces)
{
UsbInterfaceInfo usbInterfaceInfo = new UsbInterfaceInfo(mUsbDevice, monoUSBAltInterface);
mInterfaceList.Add(usbInterfaceInfo);
}
}
}
internal UsbConfigInfo(UsbDevice usbDevice, UsbConfigDescriptor descriptor, ref List <byte[]> rawDescriptors)
{
mUsbDevice = usbDevice;
mUsbConfigDescriptor = descriptor;
mRawDescriptors = rawDescriptors;
UsbInterfaceInfo currentInterface = null;
for (int iRawDescriptor = 0; iRawDescriptor < rawDescriptors.Count; iRawDescriptor++)
{
byte[] bytesRawDescriptor = rawDescriptors[iRawDescriptor];
switch (bytesRawDescriptor[1])
{
case (byte)DescriptorType.Interface:
currentInterface = new UsbInterfaceInfo(usbDevice, bytesRawDescriptor);
mRawDescriptors.RemoveAt(iRawDescriptor);
mInterfaceList.Add(currentInterface);
iRawDescriptor--;
break;
case (byte)DescriptorType.Endpoint:
if (currentInterface == null)
{
throw new UsbException(this, "Recieved and endpoint descriptor before receiving an interface descriptor.");
}
currentInterface.mEndpointInfo.Add(new UsbEndpointInfo(bytesRawDescriptor));
mRawDescriptors.RemoveAt(iRawDescriptor);
iRawDescriptor--;
break;
default:
if (currentInterface != null)
{
currentInterface.mRawDescriptors.Add(bytesRawDescriptor);
mRawDescriptors.RemoveAt(iRawDescriptor);
iRawDescriptor--;
}
break;
}
}
}
