/// <summary>
/// Releases all resources used by the <see cref="VideoCoreWindow"/> object.
/// </summary>
/// <param name="disposing">
/// </param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (_ElementHandle != 0)
{
uint updateHandle = Bcm.vc_dispmanx_update_start(0);
Bcm.vc_dispmanx_element_remove(updateHandle, _ElementHandle);
Bcm.vc_dispmanx_update_submit_sync(updateHandle);
_ElementHandle = 0;
}
if (_DispManxDisplay != 0)
{
Bcm.vc_dispmanx_display_close(_DispManxDisplay);
_DispManxDisplay = 0;
}
if (_NativeWindowLock != null)
{
_NativeWindowLock.Dispose();
_NativeWindowLock = null;
}
}
}
/// <summary>
/// Construct a fullscreen window.
/// </summary>
public VideoCoreWindow()
{
try {
int width, height;
KhronosApi.LogComment("Creating VideoCore IV native window");
if (Bcm.graphics_get_display_size(0 /* LCD */, out width, out height) < 0)
{
throw new InvalidOperationException("unable to get BCM display size");
}
Bcm.VC_RECT_T dstRect = new Bcm.VC_RECT_T(0, 0, width, height);
Bcm.VC_RECT_T srcRect = new Bcm.VC_RECT_T(0, 0, width << 16, height << 16);
if ((_DispManxDisplay = Bcm.vc_dispmanx_display_open(0 /* LCD */)) == 0)
{
throw new InvalidOperationException("unable to open DispManX display");
}
// Update - Add element
uint updateHandle = Bcm.vc_dispmanx_update_start(0);
_ElementHandle = Bcm.vc_dispmanx_element_add(updateHandle, _DispManxDisplay, 0, dstRect, 0, srcRect, 0, IntPtr.Zero, IntPtr.Zero, Bcm.DISPMANX_TRANSFORM_T.DISPMANX_NO_ROTATE);
Bcm.vc_dispmanx_update_submit_sync(updateHandle);
// Native window
_NativeWindow = new EGL_DISPMANX_WINDOW_T();
_NativeWindow.element = _ElementHandle;
_NativeWindow.width = width;
_NativeWindow.height = height;
// Keep native window pinned
_NativeWindowLock = new MemoryLock(_NativeWindow);
KhronosApi.LogComment("VideoCore IV Native Window is 0x{0}", _NativeWindowLock.Address.ToString("X"));
} catch {
Dispose();
throw;
}
}