/// <summary>
/// Builds an interface-selection request.
/// </summary>
/// <param name="configuration">The result of configuration-selection.</param>
/// <param name="index">The index of the interface to be selected.</param>
/// <returns>The interface-selection request.</returns>
public TS_URB_SELECT_INTERFACE BuildSelectionInterfaceRequest(TS_URB_SELECT_CONFIGURATION_RESULT configuration, int index)
{
if (null == configuration)
{
throw new ArgumentNullException("configuration");
}
if (index >= configuration.Interface.Length || null == configuration.Interface[index])
{
throw new ArgumentException("index specified interface doesn't exist.");
}
TS_URB_SELECT_INTERFACE urb = new TS_URB_SELECT_INTERFACE(this.requestId, this.noAck);
urb.ConfigurationHandle = configuration.ConfigurationHandle;
urb.Header.Size = 8 + 4; // Header + ConfigurationHandle
urb.TsUsbdIInfo = new TS_USBD_INTERFACE_INFORMATION();
TS_USBD_INTERFACE_INFORMATION_RESULT inf = configuration.Interface[index];
if (inf.NumberOfPipes != inf.Pipes.Length)
{
throw new ArgumentException(String.Format(
"The selecting interface count doesn't match. NumberOfPipes: {0}, Pipes count: {1}.",
inf.NumberOfPipes,
inf.Pipes.Length
));
}
urb.TsUsbdIInfo.Length = 2 + 2 + 1 + 1 + 2 + 4;
urb.TsUsbdIInfo.NumberOfPipesExpected = (ushort)inf.NumberOfPipes;
urb.TsUsbdIInfo.InterfaceNumber = inf.InterfaceNumber;
urb.TsUsbdIInfo.AlternateSetting = inf.AlternateSetting;
urb.TsUsbdIInfo.Padding = PaddingGenerator.GeneratePadding();
urb.TsUsbdIInfo.NumberOfPipes = inf.NumberOfPipes;
urb.TsUsbdIInfo.Infomations = new TS_USBD_PIPE_INFORMATION[inf.NumberOfPipes];
for (int i = 0; i < inf.NumberOfPipes; i++)
{
urb.TsUsbdIInfo.Length += 2 + 2 + 4 + 4; // count Pipe sizes
urb.TsUsbdIInfo.Infomations[i] = new TS_USBD_PIPE_INFORMATION();
urb.TsUsbdIInfo.Infomations[i].MaximumPacketSize = inf.Pipes[i].MaximumPacketSize;
urb.TsUsbdIInfo.Infomations[i].Padding = PaddingGenerator.GeneratePadding();
urb.TsUsbdIInfo.Infomations[i].MaximumTransferSize = inf.Pipes[i].MaximumTransferSize;
urb.TsUsbdIInfo.Infomations[i].PipeFlags = inf.Pipes[i].PipeFlags;
}
urb.Header.Size += urb.TsUsbdIInfo.Length; // interface information size.
return(urb);
}
public TS_URB ParsePdu(byte[] data)
{
TS_URB urb;
switch (GetTsUrbType(data))
{
// Indicates to the host controller driver that a configuration is to be selected
case URB_FUNCTIONID.URB_FUNCTION_SELECT_CONFIGURATION:
urb = new TS_URB_SELECT_CONFIGURATION();
break;
// Indicates to the host controller driver that an alternate interface setting is being selected for an interface.
// If set, the URB is used with _URB_SELECT_INTERFACE as the data structure.
case URB_FUNCTIONID.URB_FUNCTION_SELECT_INTERFACE:
urb = new TS_URB_SELECT_INTERFACE();
break;
// Indicates that all outstanding requests for a pipe should be canceled.
case URB_FUNCTIONID.URB_FUNCTION_ABORT_PIPE:
// Resets the indicated pipe.
case URB_FUNCTIONID.URB_FUNCTION_SYNC_RESET_PIPE_AND_CLEAR_STALL:
// Clears the halt condition on the host side of a pipe.
// If set, this URB is used with _URB_PIPE_REQUEST as the data structure.
case URB_FUNCTIONID.URB_FUNCTION_SYNC_RESET_PIPE:
// Clears the stall condition on the endpoint. For all pipes except isochronous pipes.
case URB_FUNCTIONID.URB_FUNCTION_SYNC_CLEAR_STALL:
urb = new TS_URB_PIPE_REQUEST();
break;
// Requests the current frame number from the host controller driver.
case URB_FUNCTIONID.URB_FUNCTION_GET_CURRENT_FRAME_NUMBER:
urb = new TS_URB_GET_CURRENT_FRAME_NUMBER();
break;
// Transfers data to or from a control pipe.
case URB_FUNCTIONID.URB_FUNCTION_CONTROL_TRANSFER:
urb = new TS_URB_CONTROL_TRANSFER();
break;
// Transfers data from a bulk pipe or interrupt pipe or to an bulk pipe.
case URB_FUNCTIONID.URB_FUNCTION_BULK_OR_INTERRUPT_TRANSFER:
urb = new TS_URB_BULK_OR_INTERRUPT_TRANSFER();
break;
// Transfers data to or from an isochronous pipe.
case URB_FUNCTIONID.URB_FUNCTION_ISOCH_TRANSFER:
urb = new TS_URB_ISOCH_TRANSFER();
break;
// Retrieves the device descriptor from a specific USB device.
case URB_FUNCTIONID.URB_FUNCTION_GET_DESCRIPTOR_FROM_DEVICE:
// Retrieves the descriptor from an endpoint on an interface for a USB device.
case URB_FUNCTIONID.URB_FUNCTION_GET_DESCRIPTOR_FROM_ENDPOINT:
// Sets a device descriptor on a device.
case URB_FUNCTIONID.URB_FUNCTION_SET_DESCRIPTOR_TO_DEVICE:
// Sets an endpoint descriptor on an endpoint for an interface.
case URB_FUNCTIONID.URB_FUNCTION_SET_DESCRIPTOR_TO_ENDPOINT:
// Retrieves the descriptor from an interface for a USB device.
case URB_FUNCTIONID.URB_FUNCTION_GET_DESCRIPTOR_FROM_INTERFACE:
// Sets a descriptor for an interface on a USB device.
case URB_FUNCTIONID.URB_FUNCTION_SET_DESCRIPTOR_TO_INTERFACE:
urb = new TS_URB_CONTROL_DESCRIPTOR_REQUEST();
break;
// Sets a USB-defined feature on a device.
case URB_FUNCTIONID.URB_FUNCTION_SET_FEATURE_TO_DEVICE:
// Sets a USB-defined feature on an endpoint for an interface on a USB device.
case URB_FUNCTIONID.URB_FUNCTION_SET_FEATURE_TO_ENDPOINT:
// Sets a USB-defined feature on an interface for a device.
case URB_FUNCTIONID.URB_FUNCTION_SET_FEATURE_TO_INTERFACE:
// Sets a USB-defined feature on a device-defined target on a USB device.
case URB_FUNCTIONID.URB_FUNCTION_SET_FEATURE_TO_OTHER:
// Clears a USB-defined feature on a device.
case URB_FUNCTIONID.URB_FUNCTION_CLEAR_FEATURE_TO_DEVICE:
// Clears a USB-defined feature on an endpoint, for an interface, on a USB device.
case URB_FUNCTIONID.URB_FUNCTION_CLEAR_FEATURE_TO_ENDPOINT:
// Clears a USB-defined feature on an interface for a device.
case URB_FUNCTIONID.URB_FUNCTION_CLEAR_FEATURE_TO_INTERFACE:
// Clears a USB-defined feature on a device defined target on a USB device.
case URB_FUNCTIONID.URB_FUNCTION_CLEAR_FEATURE_TO_OTHER:
urb = new TS_URB_CONTROL_FEATURE_REQUEST();
break;
// Retrieves status from a USB device.
case URB_FUNCTIONID.URB_FUNCTION_GET_STATUS_FROM_DEVICE:
// Retrieves status from an endpoint for an interface on a USB device.
case URB_FUNCTIONID.URB_FUNCTION_GET_STATUS_FROM_ENDPOINT:
// Retrieves status from an interface on a USB device.
case URB_FUNCTIONID.URB_FUNCTION_GET_STATUS_FROM_INTERFACE:
// Retrieves status from a device-defined target on a USB device.
case URB_FUNCTIONID.URB_FUNCTION_GET_STATUS_FROM_OTHER:
urb = new TS_URB_CONTROL_GET_STATUS_REQUEST();
break;
// Sends a vendor-specific command to a USB device.
case URB_FUNCTIONID.URB_FUNCTION_VENDOR_DEVICE:
// Sends a vendor-specific command for an endpoint on an interface on a USB device.
case URB_FUNCTIONID.URB_FUNCTION_VENDOR_ENDPOINT:
// Sends a vendor-specific command for an interface on a USB device.
case URB_FUNCTIONID.URB_FUNCTION_VENDOR_INTERFACE:
// Sends a vendor-specific command to a device-defined target on a USB device.
case URB_FUNCTIONID.URB_FUNCTION_VENDOR_OTHER:
// Sends a USB-defined class-specific command to a USB device.
case URB_FUNCTIONID.URB_FUNCTION_CLASS_DEVICE:
// Sends a USB-defined class-specific command to an endpoint, on an interface, on a USB device.
case URB_FUNCTIONID.URB_FUNCTION_CLASS_ENDPOINT:
// Sends a USB-defined class-specific command to an interface on a USB device.
case URB_FUNCTIONID.URB_FUNCTION_CLASS_INTERFACE:
// Sends a USB-defined class-specific command to a device defined target on a USB device.
case URB_FUNCTIONID.URB_FUNCTION_CLASS_OTHER:
urb = new TS_URB_CONTROL_VENDOR_OR_CLASS_REQUEST();
break;
// Retrieves the current configuration on a USB device.
case URB_FUNCTIONID.URB_FUNCTION_GET_CONFIGURATION:
urb = new TS_URB_CONTROL_GET_CONFIGURATION_REQUEST();
break;
// Retrieves the current settings for an interface on a USB device.
case URB_FUNCTIONID.URB_FUNCTION_GET_INTERFACE:
urb = new TS_URB_CONTROL_GET_INTERFACE_REQUEST();
break;
// Retrieves a Microsoft OS feature descriptor from a USB device or an interface on a USB device.
case URB_FUNCTIONID.URB_FUNCTION_GET_MS_FEATURE_DESCRIPTOR:
urb = new TS_URB_OS_FEATURE_DESCRIPTOR_REQUEST();
break;
// Transfers data to or from a control pipe without a time limit specified by a timeout value.
case URB_FUNCTIONID.URB_FUNCTION_CONTROL_TRANSFER_EX:
urb = new TS_URB_CONTROL_TRANSFER_EX();
break;
default:
urb = new TS_URB_UNKNOWN();
break;
}
if (!PduMarshaler.Unmarshal(data, urb))
{
urb = new TS_URB_UNKNOWN();
PduMarshaler.Unmarshal(data, urb);
}
return(urb);
}
