public void Dispose()
{
IsVideoReady = false;
if (m_mediaControl != null)
{
m_mediaControl.Stop();
Marshal.ReleaseComObject(m_mediaControl);
m_mediaControl = null;
}
if (m_graph != null)
{
Marshal.ReleaseComObject(m_graph);
m_graph = null;
}
if(m_internalBitmap != null)
{
m_internalBitmap.Dispose();
m_internalBitmap = null;
}
if(m_sharedSurface != null)
{
m_sharedSurface.Dispose();
m_sharedSurface = null;
}
}
private void OnNewAllocatorSurfaceCallback(object sender, IntPtr pSurface, IntPtr sharedHandle, Misc.Size size)
{
/* Reset our fields */
IsVideoReady = false;
NaturalSize = new Size(0, 0);
/* Free any resources that may be in use */
if(m_internalBitmap != null)
{
m_internalBitmap.Dispose();
m_internalBitmap = null;
}
if(m_sharedSurface != null)
{
m_sharedSurface.Dispose();
m_sharedSurface = null;
}
Texture2D sharedTexture2D = null;
var device = m_directCanvasFactory.DeviceContext.Device;
if (sharedHandle == IntPtr.Zero)
return;
try
{
/* Open up the shared surface using the passed shared handle */
sharedTexture2D = device.OpenSharedResource<Texture2D>(sharedHandle);
}
catch (Exception)
{
}
if(sharedTexture2D == null)
{
return;
}
/* Wrap our Texture2D in our Texture class */
m_sharedSurface = new Texture(sharedTexture2D);
var props = new BitmapProperties();
props.PixelFormat = new PixelFormat(Format.Unknown,
AlphaMode.Premultiplied);
/* Create a Direct2D bitmap, using the shared surface provided by
* our custom allocator */
m_internalBitmap = new Bitmap(ResourceOwner.InternalRenderTarget,
m_sharedSurface.InternalDxgiSurface,
props);
NaturalSize = new Size(m_sharedSurface.Description.Width,
m_sharedSurface.Description.Height);
IsVideoReady = true;
}
