// Update the image container for the currently registered formats
private void UpdateImageContainer()
{
CameraDevice cameraDevice = CameraDevice.Instance;
// Reallocate the data container if the number of requested images has
// changed, or if the container is not allocated
if (mNumImageHeaders != cameraDevice.GetAllImages().Count ||
(cameraDevice.GetAllImages().Count > 0 && mImageHeaderData == IntPtr.Zero))
{
mNumImageHeaders = cameraDevice.GetAllImages().Count;
Marshal.FreeHGlobal(mImageHeaderData);
mImageHeaderData = Marshal.AllocHGlobal(Marshal.SizeOf(
typeof(ImageHeaderData)) * mNumImageHeaders);
}
// Update the image info:
int i = 0;
foreach (Image image in cameraDevice.GetAllImages().Values)
{
IntPtr imagePtr = new IntPtr(mImageHeaderData.ToInt32() + i *
Marshal.SizeOf(typeof(ImageHeaderData)));
ImageHeaderData imageHeader = new ImageHeaderData();
imageHeader.width = image.Width;
imageHeader.height = image.Height;
imageHeader.stride = image.Stride;
imageHeader.bufferWidth = image.BufferWidth;
imageHeader.bufferHeight = image.BufferHeight;
imageHeader.format = (int)image.PixelFormat;
imageHeader.reallocate = 0;
imageHeader.updated = 0;
imageHeader.data = image.UnmanagedData;
Marshal.StructureToPtr(imageHeader, imagePtr, false);
++i;
}
}