mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-10-05 10:12:20 +00:00
Code Issues 1 Projects Releases Wiki Activity

directdrwasink: call previous WndProc if any

Browse source
This commit is contained in:
Andoni Morales Alastruey 2013-04-05 17:59:41 +00:00 committed by Sebastian Dröge
parent f4f4a8a0f3
commit 578b58e490
2 changed files with 44 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

43
sys/directdraw/gstdirectdrawsink.c
View file

@ -92,6 +92,7 @@ static gboolean gst_ddrawvideosink_get_format_from_caps (GstDirectDrawSink *
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,
@ -149,6 +150,7 @@ gst_directdraw_sink_set_window_handle (GstXOverlay * overlay,
if (window_handle) {
HRESULT hres;
RECT rect;
/* If we had an internal window, close it first */
if (ddrawsink->video_window && ddrawsink->our_video_window) {
@ -160,6 +162,21 @@ gst_directdraw_sink_set_window_handle (GstXOverlay * overlay,
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,
@ -497,6 +514,8 @@ gst_directdraw_sink_init (GstDirectDrawSink * ddrawsink,
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;
@ -1420,6 +1439,11 @@ gst_directdraw_sink_setup_ddraw (GstDirectDrawSink * ddrawsink)
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;
@ -1542,8 +1566,25 @@ WndProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM 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

2
sys/directdraw/gstdirectdrawsink.h
View file

@ -101,6 +101,8 @@ struct _GstDirectDrawSink
HWND video_window;
gboolean our_video_window;
HANDLE window_created_signal;
WNDPROC previous_wndproc;
LONG_PTR previous_user_data;
/* video properties */
gint video_width, video_height;