static void gst_directdraw_sink_center_rect (GstDirectDrawSink * ddrawsink,
RECT src, RECT dst, RECT * result);
static const char *DDErrorString (HRESULT hr);
+static long FAR PASCAL WndProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);
/* surfaces management functions */
static void gst_directdraw_sink_surface_destroy (GstDirectDrawSink * ddrawsink,
if (window_handle) {
HRESULT hres;
+ RECT rect;
/* If we had an internal window, close it first */
if (ddrawsink->video_window && ddrawsink->our_video_window) {
ddrawsink->video_window = (HWND) window_handle;
ddrawsink->our_video_window = FALSE;
+
+ /* Hook WndProc and user_data */
+ ddrawsink->previous_user_data = (LONG_PTR) SetWindowLongPtr (
+ (HWND) window_handle, GWLP_USERDATA, (LONG_PTR) ddrawsink);
+ ddrawsink->previous_wndproc = (WNDPROC) SetWindowLongPtr (
+ (HWND) window_handle, GWLP_WNDPROC, (LONG_PTR) WndProc);
+ if (!ddrawsink->previous_wndproc)
+ GST_DEBUG_OBJECT (ddrawsink, "Failed to hook previous WndProc");
+
+ /* Get initial window size. If it changes, we will track it from the
+ * WndProc. */
+ GetClientRect ((HWND) window_handle, &rect);
+ ddrawsink->out_width = rect.right - rect.left;
+ ddrawsink->out_height = rect.bottom - rect.top;
+
if (ddrawsink->setup) {
/* update the clipper object with the new window */
hres = IDirectDrawClipper_SetHWnd (ddrawsink->clipper, 0,
ddrawsink->clipper = NULL;
ddrawsink->video_window = NULL;
ddrawsink->our_video_window = TRUE;
+ ddrawsink->previous_wndproc = NULL;
+ ddrawsink->previous_user_data = (LONG_PTR)NULL;
ddrawsink->last_buffer = NULL;
ddrawsink->caps = NULL;
ddrawsink->window_thread = NULL;
static LRESULT FAR PASCAL
WndProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
+ GstDirectDrawSink *ddrawsink;
+ LRESULT ret;
+
+ ddrawsink = (GstDirectDrawSink *) GetWindowLongPtr (hWnd, GWLP_USERDATA);
+
switch (message) {
case WM_CREATE:{
LPCREATESTRUCT crs = (LPCREATESTRUCT) lParam;
PostQuitMessage (0);
return 0;
}
+ if (ddrawsink && ddrawsink->previous_wndproc) {
+ /* If there was a previous custom WndProc, call it */
- return DefWindowProc (hWnd, message, wParam, lParam);
+ /* Temporarily restore the previous user_data */
+ if (ddrawsink->previous_user_data)
+ SetWindowLongPtr ( hWnd, GWLP_USERDATA, ddrawsink->previous_user_data );
+
+ /* Call previous WndProc */
+ ret = CallWindowProc (
+ ddrawsink->previous_wndproc, hWnd, message, wParam, lParam);
+
+ /* Point the user_data back to our ddraw_sink */
+ SetWindowLongPtr ( hWnd, GWLP_USERDATA, (LONG_PTR)ddrawsink );
+ } else {
+ /* if there was no previous custom WndProc, call Window's default one */
+ ret = DefWindowProc (hWnd, message, wParam, lParam);
+ }
+
+ return ret;
}
static gpointer