/// <summary>
/// Cancels any pending transfer and frees resources.
/// </summary>
protected virtual void Dispose(bool disposing)
{
if (!mbDisposed)
{
mbDisposed = true;
try
{
if (!IsCancelled)
{
Cancel();
}
int dummy;
if (!mHasWaitBeenCalled)
{
Wait(out dummy);
}
if (disposing)
{
// Dispose managed resources.
if (mPinnedHandle != null)
{
mPinnedHandle.Dispose();
}
}
mPinnedHandle = null;
}
catch (Exception ex)
{
Debug.Print(ex.Message);
}
}
}
/// <summary>
/// Perform a USB bulk transfer.
/// </summary>
/// <remarks>
/// <para>The direction of the transfer is inferred from the direction bits of the endpoint address.</para>
/// <para>
/// For bulk reads, the length field indicates the maximum length of data you are expecting to receive.
/// If less data arrives than expected, this function will return that data, so be sure to check the
/// transferred output parameter.
/// </para>
/// <para>
/// You should also check the transferred parameter for bulk writes. Not all of the data may have been
/// written. Also check transferred when dealing with a timeout error code. libusb may have to split
/// your transfer into a number of chunks to satisfy underlying O/S requirements, meaning that the
/// timeout may expire after the first few chunks have completed. libusb is careful not to lose any
/// data that may have been transferred; do not assume that timeout conditions indicate a complete lack
/// of I/O.
/// </para>
/// <note type="tip" title="Libusb-1.0 API:"><seelibusb10 group="syncio"/></note>
/// </remarks>
/// <param name="deviceHandle">A handle for the device to communicate with.</param>
/// <param name="endpoint">The address of a valid endpoint to communicate with.</param>
/// <param name="data">
/// <para>A suitably-sized data buffer for either input or output (depending on endpoint).</para>
/// This value can be:
/// <list type="bullet">
/// <item>An <see cref="Array"/> of bytes or other <a href="http://msdn.microsoft.com/en-us/library/75dwhxf7.aspx">blittable</a> types.</item>
/// <item>An already allocated, pinned <see cref="GCHandle"/>. In this case <see cref="GCHandle.AddrOfPinnedObject"/> is used for the buffer address.</item>
/// <item>An <see cref="IntPtr"/>.</item>
/// </list>
/// </param>
/// <param name="length">For bulk writes, the number of bytes from data to be sent. for bulk reads, the maximum number of bytes to receive into the data buffer.</param>
/// <param name="actualLength">Output location for the number of bytes actually transferred.</param>
/// <param name="timeout">Timeout (in milliseconds) that this function should wait before giving up due to no response being received. For an unlimited timeout, use value 0.</param>
/// <returns>
/// <list type="bullet">
/// <item>0 on success (and populates <paramref name="actualLength"/>)</item>
/// <item><see cref="MonoUsbError.ErrorTimeout"/> if the transfer timed out</item>
/// <item><see cref="MonoUsbError.ErrorPipe"/> if the endpoint halted</item>
/// <item><see cref="MonoUsbError.ErrorOverflow"/>if the device offered more data, see <a href="http://libusb.sourceforge.net/api-1.0/packetoverflow.html">Packets and overflows</a></item>
/// <item><see cref="MonoUsbError.ErrorNoDevice"/> if the device has been disconnected</item>
/// <item>another <see cref="MonoUsbError"/> code on other failures</item>
/// </list>
/// </returns>
public static int BulkTransfer([In] MonoUsbDeviceHandle deviceHandle, byte endpoint, object data, int length, out int actualLength, int timeout)
{
PinnedHandle p = new PinnedHandle(data);
int ret = BulkTransfer(deviceHandle, endpoint, p.Handle, length, out actualLength, timeout);
p.Dispose();
return ret;
}
/// <summary>
/// Synchronous bulk/interrupt transfer function.
/// </summary>
/// <param name="buffer">A caller-allocated buffer for the transfer data. This object is pinned using <see cref="PinnedHandle"/>.</param>
/// <param name="offset">Position in buffer that transferring begins.</param>
/// <param name="length">Number of bytes, starting from thr offset parameter to transfer.</param>
/// <param name="timeout">Maximum time to wait for the transfer to complete.</param>
/// <param name="transferLength">Number of bytes actually transferred.</param>
/// <returns>True on success.</returns>
public ErrorCode Transfer(object buffer, int offset, int length, int timeout, out int transferLength)
{
PinnedHandle pinned = new PinnedHandle(buffer);
ErrorCode eReturn = Transfer(pinned.Handle, offset, length, timeout, out transferLength);
pinned.Dispose();
return(eReturn);
}
/// <summary>
/// Cancels any pending transfer and frees resources.
/// </summary>
public virtual void Dispose()
{
if (!IsCancelled)
{
Cancel();
}
int dummy;
if (!mHasWaitBeenCalled)
{
Wait(out dummy);
}
if (mPinnedHandle != null)
{
mPinnedHandle.Dispose();
}
mPinnedHandle = null;
}
/// <summary>
/// Cancels any pending transfer and frees resources.
/// </summary>
public virtual void Dispose()
{
if (!IsCancelled)
{
Cancel();
}
try
{
int dummy;
if (!mHasWaitBeenCalled)
{
Wait(out dummy);
}
if (mPinnedHandle != null)
{
mPinnedHandle.Dispose();
}
mPinnedHandle = null;
}
catch (System.ObjectDisposedException) { }
}
/// <summary>
/// Perform a USB control transfer.
/// </summary>
/// <remarks>
/// <para>The direction of the transfer is inferred from the bmRequestType field of the setup packet.</para>
/// <para>The wValue, wIndex and wLength fields values should be given in host-endian byte order.</para>
/// <note type="tip" title="Libusb-1.0 API:"><seelibusb10 group="syncio"/></note>
/// </remarks>
/// <param name="deviceHandle">A handle for the device to communicate with.</param>
/// <param name="requestType">The request type field for the setup packet.</param>
/// <param name="request">The request field for the setup packet.</param>
/// <param name="value">The value field for the setup packet</param>
/// <param name="index">The index field for the setup packet.</param>
/// <param name="data">
/// <para>A suitably-sized data buffer for either input or output (depending on direction bits within bmRequestType).</para>
/// This value can be:
/// <list type="bullet">
/// <item>An <see cref="Array"/> of bytes or other <a href="http://msdn.microsoft.com/en-us/library/75dwhxf7.aspx">blittable</a> types.</item>
/// <item>An already allocated, pinned <see cref="GCHandle"/>. In this case <see cref="GCHandle.AddrOfPinnedObject"/> is used for the buffer address.</item>
/// <item>An <see cref="IntPtr"/>.</item>
/// </list>
/// </param>
/// <param name="dataLength">The length field for the setup packet. The data buffer should be at least this size.</param>
/// <param name="timeout">timeout (in milliseconds) that this function should wait before giving up due to no response being received. For an unlimited timeout, use value 0.</param>
/// <returns>
/// <list type="bullet">
/// <item>on success, the number of bytes actually transferred</item>
/// <item><see cref="MonoUsbError.ErrorTimeout"/> if the transfer timed out</item>
/// <item><see cref="MonoUsbError.ErrorPipe"/> if the control request was not supported by the device.</item>
/// <item><see cref="MonoUsbError.ErrorNoDevice"/> if the device has been disconnected</item>
/// <item>another <see cref="MonoUsbError"/> code on other failures</item>
/// </list>
/// </returns>
public static int ControlTransfer([In] MonoUsbDeviceHandle deviceHandle,
byte requestType,
byte request,
short value,
short index,
object data,
short dataLength,
int timeout)
{
PinnedHandle p = new PinnedHandle(data);
int ret = ControlTransfer(deviceHandle, requestType, request, value, index, p.Handle, dataLength, timeout);
p.Dispose();
return ret;
}
/// <summary>
/// Synchronous bulk/interrupt transfer function.
/// </summary>
/// <param name="buffer">A caller-allocated buffer for the transfer data. This object is pinned using <see cref="PinnedHandle"/>.</param>
/// <param name="offset">Position in buffer that transferring begins.</param>
/// <param name="length">Number of bytes, starting from thr offset parameter to transfer.</param>
/// <param name="timeout">Maximum time to wait for the transfer to complete.</param>
/// <param name="transferLength">Number of bytes actually transferred.</param>
/// <returns>True on success.</returns>
public ErrorCode Transfer(object buffer, int offset, int length, int timeout, out int transferLength)
{
PinnedHandle pinned = new PinnedHandle(buffer);
ErrorCode eReturn = Transfer(pinned.Handle, offset, length, timeout, out transferLength);
pinned.Dispose();
return eReturn;
}
/// <summary>
/// Gets a descriptor from the device. See <see cref="DescriptorType"/> for more information.
/// </summary>
/// <param name="descriptorType">The descriptor type ID to retrieve; this is usually one of the <see cref="DescriptorType"/> enumerations.</param>
/// <param name="index">Descriptor index.</param>
/// <param name="langId">Descriptor language id.</param>
/// <param name="buffer">Memory to store the returned descriptor in.</param>
/// <param name="bufferLength">Length of the buffer parameter in bytes.</param>
/// <param name="transferLength">The number of bytes transferred to buffer upon success.</param>
/// <returns>True on success.</returns>
public bool GetDescriptor(byte descriptorType, byte index, short langId, object buffer, int bufferLength, out int transferLength)
{
PinnedHandle pinned = new PinnedHandle(buffer);
bool bSuccess = GetDescriptor(descriptorType, index, langId, pinned.Handle, bufferLength, out transferLength);
pinned.Dispose();
return bSuccess;
}
/// <summary>
/// Transmits control data over a default control endpoint.
/// </summary>
/// <param name="setupPacket">An 8-byte setup packet which contains parameters for the control request.
/// See section 9.3 USB Device Requests of the Universal Serial Bus Specification Revision 2.0 for more information. </param>
/// <param name="buffer">Data to be sent/received from the device.</param>
/// <param name="bufferLength">Length of the buffer param.</param>
/// <param name="lengthTransferred">Number of bytes sent or received (depends on the direction of the control transfer).</param>
/// <returns>True on success.</returns>
public virtual bool ControlTransfer(ref UsbSetupPacket setupPacket, object buffer, int bufferLength, out int lengthTransferred)
{
PinnedHandle pinned = new PinnedHandle(buffer);
bool bSuccess = ControlTransfer(ref setupPacket, pinned.Handle, bufferLength, out lengthTransferred);
pinned.Dispose();
return bSuccess;
}
/// <summary>
/// Copies data into <see cref="PtrData"/>.
/// </summary>
/// <param name="data">
/// <para>Data buffer to copy into <see cref="PtrData"/>for an output control transfer.</para>
/// This value can be:
/// <list type="bullet">
/// <item>An <see cref="Array"/> of bytes or other <a href="http://msdn.microsoft.com/en-us/library/75dwhxf7.aspx">blittable</a> types.</item>
/// <item>An already allocated, pinned <see cref="GCHandle"/>. In this case <see cref="GCHandle.AddrOfPinnedObject"/> is used for the buffer address.</item>
/// <item>An <see cref="IntPtr"/>.</item>
/// </list>
/// </param>
/// <param name="offset">The offset in <paramref name="data"/> to begin copying.</param>
/// <param name="length">Number of to copy.</param>
public void SetData(object data, int offset, int length)
{
PinnedHandle p = new PinnedHandle(data);
Byte[] temp = new byte[length];
Marshal.Copy(p.Handle, temp, offset, length);
p.Dispose();
Marshal.Copy(temp, 0, PtrData, length);
}