/// <summary>
/// Attempt to preallocate the circular buffer for as many images as possible that fits in available memory.
/// </summary>
public bool AllocateBuffers(ImageDescriptor imageDescriptor)
{
if (composite == null)
{
throw new InvalidOperationException();
}
if (!NeedsReallocation(imageDescriptor))
{
return(true);
}
Free();
int width = imageDescriptor.Width;
int height = imageDescriptor.Height;
PixelFormat pixelFormat = PixelFormat.Format24bppRgb;
try
{
image = new Bitmap(width, height, pixelFormat);
}
catch (Exception e)
{
log.ErrorFormat("Error while allocating delay compositer buffer.");
log.Error(e);
}
if (image != null)
{
this.rect = new Rectangle(0, 0, width, height);
this.allocated = true;
this.imageDescriptor = imageDescriptor;
currentPosition = 0;
composite.UpdateSubframes(imageDescriptor, delayer.Capacity);
// Better do the GC now to push everything to gen2 and LOH rather than taking a hit later during normal streaming operations.
GC.Collect(2);
}
return(allocated);
}
public void ResetComposite(IDelayComposite composite)
{
this.composite = composite;
currentPosition = 0;
composite.UpdateSubframes(imageDescriptor, delayer.Capacity);
}