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GstGLWindow, GstGLImagesink, x11: Scale navigation events on resized windows

Browse source 
If window is resized, GstStructure pointer values have to be rescaled to
original geometry. A get_surface_dimensions GLWindow class method is added for
this purpose and used in the navigation send_event function.

https://bugzilla.gnome.org/show_bug.cgi?id=703486
This commit is contained in:
Vasilis Liaskovitis 2014-08-06 16:48:03 +03:00 committed by Tim-Philipp Müller
parent f322a331c8
commit 7b1a853888
4 changed files with 70 additions and 0 deletions
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23
ext/gl/gstglimagesink.c
View file

@ -193,10 +193,33 @@ gst_glimage_sink_navigation_send_event (GstNavigation * navigation, GstStructure
GstGLImageSink *sink = GST_GLIMAGE_SINK (navigation);
GstEvent *event = NULL;
GstPad *pad = NULL;
GstGLWindow *window = gst_gl_context_get_window (sink->context);
guint width, height;
gdouble x, y, xscale, yscale;
g_return_if_fail (GST_GL_IS_WINDOW (window));
width = GST_VIDEO_SINK_WIDTH (sink);
height = GST_VIDEO_SINK_HEIGHT (sink);
gst_gl_window_get_surface_dimensions (window, &width, &height);
event = gst_event_new_navigation (structure);
pad = gst_pad_get_peer (GST_VIDEO_SINK_PAD (sink));
/* Converting pointer coordinates to the non scaled geometry */
if (width != GST_VIDEO_SINK_WIDTH (sink) &&
width != 0 && gst_structure_get_double (structure, "pointer_x", &x)) {
xscale = (gdouble) GST_VIDEO_SINK_WIDTH (sink) / width;
gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE,
(gdouble) x * xscale, NULL);
}
if (height != GST_VIDEO_SINK_HEIGHT (sink) &&
height != 0 && gst_structure_get_double (structure, "pointer_y", &y)) {
yscale = (gdouble) GST_VIDEO_SINK_HEIGHT (sink) / height;
gst_structure_set (structure, "pointer_y", G_TYPE_DOUBLE,
(gdouble) y * yscale, NULL);
}
if (GST_IS_PAD (pad) && GST_IS_EVENT (event))
gst_pad_send_event (pad, event);

27
gst-libs/gst/gl/gstglwindow.c
View file

@ -601,6 +601,25 @@ gst_gl_window_get_context (GstGLWindow * window)
return (GstGLContext *) g_weak_ref_get (&window->context_ref);
}
/**
* gst_gl_window_get_surface_dimensions:
* @window: a #GstGLWindow
* @width: (out): resulting surface width
* @height: (out): resulting surface height
*/
void
gst_gl_window_get_surface_dimensions (GstGLWindow * window, guint * width,
guint * height)
{
GstGLWindowClass *window_class;
g_return_if_fail (GST_GL_IS_WINDOW (window));
window_class = GST_GL_WINDOW_GET_CLASS (window);
g_return_if_fail (window_class->get_surface_dimensions != NULL);
window_class->get_surface_dimensions (window, width, height);
}
GType gst_gl_dummy_window_get_type (void);
G_DEFINE_TYPE (GstGLDummyWindow, gst_gl_dummy_window, GST_GL_TYPE_WINDOW);
@ -737,6 +756,12 @@ gst_gl_dummy_window_get_display (GstGLWindow * window)
return 0;
}
static void
gst_gl_dummy_window_get_surface_dimensions (GstGLWindow * window, guint * width,
guint * height)
{
}
static void
gst_gl_dummy_window_class_init (GstGLDummyWindowClass * klass)
{
@ -756,6 +781,8 @@ gst_gl_dummy_window_class_init (GstGLDummyWindowClass * klass)
GST_DEBUG_FUNCPTR (gst_gl_dummy_window_send_message_async);
window_class->open = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_open);
window_class->close = GST_DEBUG_FUNCPTR (gst_gl_dummy_window_close);
window_class->get_surface_dimensions =
GST_DEBUG_FUNCPTR (gst_gl_dummy_window_get_surface_dimensions);
}
static void

3
gst-libs/gst/gl/gstglwindow.h
View file

@ -123,6 +123,7 @@ struct _GstGLWindowClass {
gboolean (*open) (GstGLWindow *window, GError **error);
void (*close) (GstGLWindow *window);
void (*get_surface_dimensions) (GstGLWindow *window, guint *width, guint *height);
/*< private >*/
gpointer _reserved[GST_PADDING];
@ -148,6 +149,8 @@ void gst_gl_window_quit (GstGLWindow *window);
void gst_gl_window_send_message (GstGLWindow *window, GstGLWindowCB callback, gpointer data);
void gst_gl_window_send_message_async (GstGLWindow *window, GstGLWindowCB callback, gpointer data, GDestroyNotify destroy);
guintptr gst_gl_window_get_display (GstGLWindow *window);
void gst_gl_window_get_surface_dimensions (GstGLWindow * window, guint * width,
guint * height);
GstGLContext * gst_gl_window_get_context (GstGLWindow *window);

17
gst-libs/gst/gl/x11/gstglwindow_x11.c
View file

@ -77,6 +77,8 @@ gboolean gst_gl_window_x11_create_context (GstGLWindow * window,
GstGLAPI gl_api, guintptr external_gl_context, GError ** error);
gboolean gst_gl_window_x11_open (GstGLWindow * window, GError ** error);
void gst_gl_window_x11_close (GstGLWindow * window);
static void gst_gl_window_x11_get_surface_dimensions (GstGLWindow * window,
guint * width, guint * height);
static void
gst_gl_window_x11_finalize (GObject * object)
@ -109,6 +111,8 @@ gst_gl_window_x11_class_init (GstGLWindowX11Class * klass)
GST_DEBUG_FUNCPTR (gst_gl_window_x11_send_message_async);
window_class->open = GST_DEBUG_FUNCPTR (gst_gl_window_x11_open);
window_class->close = GST_DEBUG_FUNCPTR (gst_gl_window_x11_close);
window_class->get_surface_dimensions =
GST_DEBUG_FUNCPTR (gst_gl_window_x11_get_surface_dimensions);
}
static void
@ -705,3 +709,16 @@ gst_gl_window_x11_get_display (GstGLWindow * window)
return (guintptr) window_x11->device;
}
static void
gst_gl_window_x11_get_surface_dimensions (GstGLWindow * window, guint * width,
guint * height)
{
GstGLWindowX11 *window_x11 = GST_GL_WINDOW_X11 (window);
XWindowAttributes attr;
XGetWindowAttributes (window_x11->device, window_x11->internal_win_id, &attr);
if (width != NULL)
*width = attr.width;
if (height != NULL)
*height = attr.height;
}