/// <summary>
/// Draws the given frame to the video.
/// </summary>
/// <param name="device">The device on which the given framebuffer is created.</param>
/// <param name="uploadedTexture">The texture which should be added to the video.</param>
public void DrawFrame(EngineDevice device, MemoryMappedTexture32bpp uploadedTexture)
{
try
{
device.EnsureNotNull(nameof(device));
uploadedTexture.EnsureNotNull(nameof(uploadedTexture));
if (!m_hasStarted)
{
throw new SeeingSharpGraphicsException($"{nameof(SeeingSharpVideoWriter)} is not started!");
}
if (m_hasFinished)
{
throw new SeeingSharpGraphicsException($"{nameof(SeeingSharpVideoWriter)} has already finished before!");
}
// Check for correct image size
if (m_videoSize != uploadedTexture.PixelSize)
{
throw new SeeingSharpGraphicsException("Size has changed during recording!");
}
this.DrawFrameInternal(device, uploadedTexture);
}
catch (Exception ex)
{
m_drawException = ex;
}
}
/// <summary>
/// Reads the next frame and puts it into the provided buffer.
/// </summary>
/// <param name="targetBuffer">The target buffer to write to.</param>
public bool ReadFrame(MemoryMappedTexture32bpp targetBuffer)
{
this.EnsureNotNullOrDisposed("this");
targetBuffer.EnsureNotNull(nameof(targetBuffer));
if ((targetBuffer.Width != base.FrameSize.Width) ||
(targetBuffer.Height != base.FrameSize.Height))
{
throw new SeeingSharpGraphicsException("Size of the given buffer does not match the video size!");
}
// Read the frame
SeeingSharpMediaBuffer mediaSharpManaged = base.ReadFrameInternal();
if (mediaSharpManaged == null)
{
return(false);
}
// Process the frame
try
{
MF.MediaBuffer mediaBuffer = mediaSharpManaged.GetBuffer();
int cbMaxLength;
int cbCurrentLenght;
IntPtr mediaBufferPointer = mediaBuffer.Lock(out cbMaxLength, out cbCurrentLenght);
// Performance optimization using CopyMemory method
// see http://www.rolandk.de/wp/2015/05/wie-schnell-man-speicher-falsch-kopieren-kann/
CommonTools.CopyMemory(
mediaBufferPointer, targetBuffer.Pointer,
(ulong)(base.FrameSize.Width * base.FrameSize.Height * 4));
return(true);
}
finally
{
mediaSharpManaged.Dispose();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="StandardTextureResource" /> class.
/// </summary>
internal StandardTextureResource(MemoryMappedTexture32bpp inMemoryTexture)
{
inMemoryTexture.EnsureNotNull(nameof(inMemoryTexture));
m_inMemoryTexture = inMemoryTexture;
}
/// <summary>
/// Initializes a new instance of the <see cref="BitmapTextureResource"/> class.
/// </summary>
/// <param name="mappedTexture">The mapped texture.</param>
public BitmapTextureResource(MemoryMappedTexture32bpp mappedTexture)
{
mappedTexture.EnsureNotNull(nameof(mappedTexture));
m_mappedTexture = mappedTexture;
}
