/// <summary>
/// Renders an object and sends the image to the XSplit plugin.
/// This method must be called on the same thread as the owner of the Visual, in most cases the UI (main) thread.
/// </summary>
/// <param name="obj">
/// Visual object to render and send to XSplit.
/// </param>
/// <param name="width">
/// Desired output width, in pixels.
/// </param>
/// <param name="height">
/// Desired output height, in pixels.
/// </param>
/// <returns>
/// Returns whether the call was successful and the object was rendered. If obj is null, false will always be returned.
/// </returns>
public bool RenderVisual(Bitmap img)
{
if (img == null)
{
return(false);
}
if (ConnectionIsReady)
{
// The remaining work (format conversion, sending to xsplit) can be done on a seperate thread)
Task.Factory.StartNew(
() =>
{
using (var stream = new MemoryStream())
{
img.Save(stream, ImageFormat.Bmp);
stream.Position = 0;
byte[] bytes = stream.ToArray();
// Length of output data we're going to send.
int length = img.Width * img.Height * 4;
// Allocate memory for bitmap transfer to COM
IntPtr dataptr = Marshal.AllocCoTaskMem(length);
Marshal.Copy(bytes, bytes.Length - length, dataptr, length);
xsplit.SendFrame((uint)img.Width, (uint)img.Height, dataptr.ToInt32());
// Send to broadcaster
Marshal.FreeCoTaskMem(dataptr);
}
});
return(true);
}
return(false);
}
