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d3dvideosink: Avoid frame rendering while the window is completely hidden

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=749856
This commit is contained in:
Fabio Cetrini 2015-06-10 15:03:31 +02:00 committed by Sebastian Dröge
parent e7ca427ddb
commit 79f57e62dc
1 changed files with 44 additions and 0 deletions
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44
sys/d3dvideosink/d3dhelpers.c
View file

@ -28,6 +28,14 @@
#include <stdio.h>
typedef enum
{
WINDOW_VISIBILITY_FULL = 1,
WINDOW_VISIBILITY_PARTIAL = 2,
WINDOW_VISIBILITY_HIDDEN = 3,
WINDOW_VISIBILITY_ERROR = 4
} WindowHandleVisibility;
/** FWD DECLS **/
static gboolean d3d_hidden_window_thread (GstD3DVideoSinkClass * klass);
@ -1823,6 +1831,12 @@ end:
GstFlowReturn
d3d_render_buffer (GstD3DVideoSink * sink, GstBuffer * buf)
{
WindowHandleVisibility handle_visibility = WINDOW_VISIBILITY_ERROR;
int clip_ret;
HDC handle_hdc;
RECT handle_rectangle;
RECT clip_rectangle;
GstFlowReturn ret = GST_FLOW_OK;
GstMemory *mem;
LPDIRECT3DSURFACE9 surface = NULL;
@ -1845,6 +1859,36 @@ d3d_render_buffer (GstD3DVideoSink * sink, GstBuffer * buf)
goto end;
}
/* check for window handle visibility, if hidden skip frame rendering */
handle_hdc = GetDC (sink->d3d.window_handle);
GetClientRect (sink->d3d.window_handle, &handle_rectangle);
clip_ret = GetClipBox (handle_hdc, &clip_rectangle);
ReleaseDC (sink->d3d.window_handle, handle_hdc);
switch (clip_ret) {
case NULLREGION:
handle_visibility = WINDOW_VISIBILITY_HIDDEN;
break;
case SIMPLEREGION:
if (EqualRect (&clip_rectangle, &handle_rectangle))
handle_visibility = WINDOW_VISIBILITY_FULL;
else
handle_visibility = WINDOW_VISIBILITY_PARTIAL;
break;
case COMPLEXREGION:
handle_visibility = WINDOW_VISIBILITY_PARTIAL;
break;
default:
handle_visibility = WINDOW_VISIBILITY_ERROR;
break;
}
if (handle_visibility == WINDOW_VISIBILITY_HIDDEN) {
GST_DEBUG_OBJECT (sink, "Hidden hwnd, skipping frame rendering...");
goto end;
}
GST_INFO_OBJECT (sink, "%s %" GST_TIME_FORMAT,
(sink->d3d.window_handle != NULL) ? "Render" : "No Win",
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));