public string GetPortName(int port)
{
if (_rtmidi == null || !_rtmidi->ok)
{
return(null);
}
return(Marshal.PtrToStringAnsi(RtMidiDll.GetPortName(_rtmidi, (uint)port)));
}
RenderTexture TryReceiveFrame()
{
PrepareInternalObjects();
// Do nothing if the recv object is not ready.
if (_recv == null)
{
return(null);
}
// Try getting a video frame.
var frameOrNull = RecvHelper.TryCaptureVideoFrame(_recv);
if (frameOrNull == null)
{
return(null);
}
var frame = (Interop.VideoFrame)frameOrNull;
// Pixel format conversion
var rt = _converter.Decode
(frame.Width, frame.Height,
Util.CheckAlpha(frame.FourCC), frame.Data);
// Copy the metadata if any.
if (frame.Metadata != System.IntPtr.Zero)
{
metadata = Marshal.PtrToStringAnsi(frame.Metadata);
}
else
{
metadata = null;
}
// Free the frame up.
_recv.FreeVideoFrame(frame);
return(rt);
}
RenderTexture TryReceiveFrame()
{
PrepareReceiverObjects();
if (_recv == null)
{
return(null);
}
// Video frame capturing
var frameOrNull = RecvHelper.TryCaptureVideoFrame(_recv);
if (frameOrNull == null)
{
return(null);
}
var frame = (Interop.VideoFrame)frameOrNull;
// Pixel format conversion
var rt = _converter.Decode
(frame.Width, frame.Height, Util.HasAlpha(frame.FourCC), frame.Data);
// Metadata retrieval
if (frame.Metadata != IntPtr.Zero)
{
metadata = Marshal.PtrToStringAnsi(frame.Metadata);
}
else
{
metadata = null;
}
// Video frame release
_recv.FreeVideoFrame(frame);
return(rt);
}
/// <summary>
/// Gets content of the system clipboard.
/// </summary>
/// <param name="dataType">The type of the text data in the clipboard</param>
/// <returns>
/// Text content retrieved from the clipboard if available. Otherwise null.
/// </returns>
/// <remarks>
/// <para>
/// This method gets text from the system clipboard. If stored text data is a special
/// format (line or rectangle,) its data type will be set to <paramref name="dataType"/>
/// parameter.
/// </para>
/// </remarks>
/// <seealso cref="Sgry.Azuki.TextDataType">TextDataType enum</seealso>
public string GetClipboardText(out TextDataType dataType)
{
Int32 rc; // result code
var clipboardOpened = false;
var dataHandle = IntPtr.Zero;
var dataPtr = IntPtr.Zero;
var formatID = UInt32.MaxValue;
string data = null;
dataType = TextDataType.Normal;
try
{
// open clipboard
rc = WinApi.OpenClipboard(IntPtr.Zero);
if (rc == 0)
{
return(null);
}
clipboardOpened = true;
// distinguish type of data in the clipboard
if (WinApi.IsClipboardFormatAvailable(_CF_LINEOBJECT) != 0)
{
formatID = WinApi.CF_UNICODETEXT;
dataType = TextDataType.Line;
}
else if (WinApi.IsClipboardFormatAvailable(_CF_RECTSELECT) != 0)
{
formatID = WinApi.CF_UNICODETEXT;
dataType = TextDataType.Rectangle;
}
else if (WinApi.IsClipboardFormatAvailable(WinApi.CF_UNICODETEXT) != 0)
{
formatID = WinApi.CF_UNICODETEXT;
}
else if (WinApi.IsClipboardFormatAvailable(WinApi.CF_TEXT) != 0)
{
formatID = WinApi.CF_TEXT;
}
if (formatID == UInt32.MaxValue)
{
return(null); // no text data was in clipboard
}
// get handle of the clipboard data
dataHandle = WinApi.GetClipboardData(formatID);
if (dataHandle == IntPtr.Zero)
{
return(null);
}
// get data pointer by locking the handle
dataPtr = WinApi.GlobalLock(dataHandle);
if (dataPtr == IntPtr.Zero)
{
return(null);
}
// retrieve data
if (formatID == WinApi.CF_TEXT)
{
data = Marshal.PtrToStringAnsi(dataPtr);
}
else
{
data = Marshal.PtrToStringUni(dataPtr);
}
}
finally
{
// unlock handle
if (dataPtr != IntPtr.Zero)
{
WinApi.GlobalUnlock(dataHandle);
}
if (clipboardOpened)
{
WinApi.CloseClipboard();
}
}
return(data);
}
