/// <summary>
/// Create a VideoFrame from a <see cref="SharpDX.Direct3D11.Texture2D"/>
/// </summary>
/// <param name="texture"></param>
/// <param name="aspectRatio"></param>
/// <param name="fourCC"></param>
/// <param name="frameRateNumerator"></param>
/// <param name="frameRateDenominator"></param>
/// <param name="format"></param>
/// <param name="nodeContext"></param>
public VideoFrame(Texture2D texture, NDIlib.FourCC_type_e fourCC,
int frameRateNumerator, int frameRateDenominator, NDIlib.frame_format_type_e format, NodeContext nodeContext)
{
var provider = nodeContext.Factory.CreateService <IResourceProvider <Device> >(nodeContext);
using var deviceHandle = provider.GetHandle();
var device = deviceHandle.Resource;
int width = texture.Description.Width;
int height = texture.Description.Height;
int stride = width * SharpDX.DXGI.FormatHelper.SizeOfInBytes(texture.Description.Format);
int bufferSize = height * stride;
IntPtr videoBufferPtr = Marshal.AllocHGlobal(bufferSize);
texture.CopyToPointer(device, videoBufferPtr, bufferSize);
_ndiVideoFrame = new NDIlib.video_frame_v2_t()
{
xres = width,
yres = height,
FourCC = texture.Description.Format.ToFourCC(),
frame_rate_N = frameRateNumerator,
frame_rate_D = frameRateDenominator,
picture_aspect_ratio = (float)width / height,
frame_format_type = format,
timecode = NDIlib.send_timecode_synthesize,
p_data = videoBufferPtr,
line_stride_in_bytes = stride,
p_metadata = IntPtr.Zero,
timestamp = 0
};
}
/// <summary>
/// Constructor that Takes an IImage
/// </summary>
/// <param name="image"></param>
/// <param name="clone"></param>
/// <param name="aspectRatio"></param>
/// <param name="fourCC"></param>
/// <param name="frameRateNumerator"></param>
/// <param name="frameRateDenominator"></param>
/// <param name="format"></param>
public VideoFrame(IImage image, bool clone, float aspectRatio, NDIlib.FourCC_type_e fourCC,
int frameRateNumerator, int frameRateDenominator, NDIlib.frame_format_type_e format)
{
var ar = aspectRatio;
if (ar <= 0.0)
{
ar = (float)image.Info.Width / image.Info.Height;
}
int bufferSize = image.Info.ImageSize;
IntPtr videoBufferPtr;
if (clone)
{
// we have to know to free it later
_memoryOwned = true;
// allocate some memory for a video buffer
videoBufferPtr = Marshal.AllocHGlobal(bufferSize);
using (var handle = image.GetData().Bytes.Pin())
{
unsafe
{
System.Buffer.MemoryCopy((void *)handle.Pointer, (void *)videoBufferPtr.ToPointer(), bufferSize, bufferSize);
}
}
}
else
{
_pinnedBytes = true;
unsafe
{
_handle = image.GetData().Bytes.Pin(); //unpin when frame gets Disposed
videoBufferPtr = (IntPtr)_handle.Pointer;
}
}
_ndiVideoFrame = new NDIlib.video_frame_v2_t()
{
xres = image.Info.Width,
yres = image.Info.Height,
FourCC = fourCC,
frame_rate_N = frameRateNumerator,
frame_rate_D = frameRateDenominator,
picture_aspect_ratio = ar,
frame_format_type = format,
timecode = NDIlib.send_timecode_synthesize,
p_data = videoBufferPtr,
line_stride_in_bytes = image.Info.ScanSize,
p_metadata = IntPtr.Zero,
timestamp = 0
};
}
public VideoFrame(IntPtr bufferPtr, int width, int height, int stride, NDIlib.FourCC_type_e fourCC,
float aspectRatio, int frameRateNumerator, int frameRateDenominator, NDIlib.frame_format_type_e format)
{
_ndiVideoFrame = new NDIlib.video_frame_v2_t()
{
xres = width,
yres = height,
FourCC = fourCC,
frame_rate_N = frameRateNumerator,
frame_rate_D = frameRateDenominator,
picture_aspect_ratio = aspectRatio,
frame_format_type = format,
timecode = NDIlib.send_timecode_synthesize,
p_data = bufferPtr,
line_stride_in_bytes = stride,
p_metadata = IntPtr.Zero,
timestamp = 0
};
}
public static PixelFormat ToPixelFormat(this NDIlib.FourCC_type_e fourCC) => fourCC == NDIlib.FourCC_type_e.FourCC_type_UYVY ? PixelFormat.UYVY : fourCC == NDIlib.FourCC_type_e.FourCC_type_UYVA ? PixelFormat.UYVA : PixelFormat.Invalid;
