libs: display: replace gst_vaapi_display_new() with gst_vaapi_display_config()

Gobjectification for GstVaapiDisplay was almost done by the commit 185da3d1.
But still something breaking GObject code convention remains, which is
calling gst_vaapi_display_new() in each decendants.

This patch replaces it with gst_vaapi_display_config(), defined in private
header.

https://bugzilla.gnome.org/show_bug.cgi?id=796470

gst-libs/gst/vaapi/gstvaapidisplay.c

@@ -1143,11 +1143,24 @@ gst_vaapi_display_class_init (GstVaapiDisplayClass * klass)
   g_object_class_install_properties (object_class, N_PROPERTIES, g_properties);
 }
 
+/**
+ * gst_vaapi_display_config:
+ * @display: instance of #GstVaapiDisplay
+ * @init_type: type of initialization #GstVaapiDisplayInitType
+ * @init_value: a pointer to the structure with the initialization
+ * parameters
+ *
+ * Binds @display to the VA layer; otherwise it is just an empty
+ * structure.
+ *
+ * Returns: the configured @display if it was configured correctly;
+ * otherwise unrefs @display and returns %NULL.
+ **/
 GstVaapiDisplay *
-gst_vaapi_display_new (GstVaapiDisplay * display,
+gst_vaapi_display_config (GstVaapiDisplay * display,
     GstVaapiDisplayInitType init_type, gpointer init_value)
 {
-  g_return_val_if_fail (display != NULL, NULL);
+  g_return_val_if_fail (display && GST_VAAPI_IS_DISPLAY (display), NULL);
 
   if (!gst_vaapi_display_create (display, init_type, init_value))
     goto error;
@@ -1156,7 +1169,7 @@ gst_vaapi_display_new (GstVaapiDisplay * display,
   /* ERRORS */
 error:
   {
-    gst_vaapi_display_unref (display);
+    gst_object_unref (display);
     return NULL;
   }
 }
@@ -1177,7 +1190,7 @@ gst_vaapi_display_new_with_display (VADisplay va_display)
     .va_display = va_display,
   };
 
-  return gst_vaapi_display_new (g_object_new (GST_TYPE_VAAPI_DISPLAY, NULL),
+  return gst_vaapi_display_config (g_object_new (GST_TYPE_VAAPI_DISPLAY, NULL),
       GST_VAAPI_DISPLAY_INIT_FROM_VA_DISPLAY, &info);
 }
 

gst-libs/gst/vaapi/gstvaapidisplay_drm.c

@@ -395,8 +395,8 @@ gst_vaapi_display_drm_new (const gchar * device_path)
 
   for (i = 0; i < num_types; i++) {
     g_drm_device_type = types[i];
-    display =
+    display = g_object_new (GST_TYPE_VAAPI_DISPLAY_DRM, NULL);
-        gst_vaapi_display_new (g_object_new (GST_TYPE_VAAPI_DISPLAY_DRM, NULL),
+    display = gst_vaapi_display_config (display,
         GST_VAAPI_DISPLAY_INIT_FROM_DISPLAY_NAME, (gpointer) device_path);
     if (display || device_path)
       break;
@@ -419,9 +419,12 @@ gst_vaapi_display_drm_new (const gchar * device_path)
 GstVaapiDisplay *
 gst_vaapi_display_drm_new_with_device (gint device)
 {
+  GstVaapiDisplay *display;
+
   g_return_val_if_fail (device >= 0, NULL);
 
-  return gst_vaapi_display_new (g_object_new (GST_TYPE_VAAPI_DISPLAY_DRM, NULL),
+  display = g_object_new (GST_TYPE_VAAPI_DISPLAY_DRM, NULL);
+  return gst_vaapi_display_config (display,
       GST_VAAPI_DISPLAY_INIT_FROM_NATIVE_DISPLAY, GINT_TO_POINTER (device));
 }
 

gst-libs/gst/vaapi/gstvaapidisplay_egl.c

@@ -366,6 +366,7 @@ gst_vaapi_display_egl_class_init (GstVaapiDisplayEGLClass * klass)
 GstVaapiDisplay *
 gst_vaapi_display_egl_new (GstVaapiDisplay * display, guint gles_version)
 {
+  GstVaapiDisplay *wrapper_display;
   InitParams params = {
     .gles_version = gles_version,
   };
@@ -375,7 +376,8 @@ gst_vaapi_display_egl_new (GstVaapiDisplay * display, guint gles_version)
     params.display_type = GST_VAAPI_DISPLAY_VADISPLAY_TYPE (display);
   }
 
-  return gst_vaapi_display_new (g_object_new (GST_TYPE_VAAPI_DISPLAY_EGL, NULL),
+  wrapper_display = g_object_new (GST_TYPE_VAAPI_DISPLAY_EGL, NULL);
+  return gst_vaapi_display_config (wrapper_display,
       GST_VAAPI_DISPLAY_INIT_FROM_NATIVE_DISPLAY, &params);
 }
 
@@ -399,6 +401,7 @@ GstVaapiDisplay *
 gst_vaapi_display_egl_new_with_native_display (gpointer native_display,
     GstVaapiDisplayType display_type, guint gles_version)
 {
+  GstVaapiDisplay *display;
   InitParams params = {
     .display_type = display_type,
     .gl_display = native_display,
@@ -407,7 +410,8 @@ gst_vaapi_display_egl_new_with_native_display (gpointer native_display,
 
   g_return_val_if_fail (native_display != NULL, NULL);
 
-  return gst_vaapi_display_new (g_object_new (GST_TYPE_VAAPI_DISPLAY_EGL, NULL),
+  display = g_object_new (GST_TYPE_VAAPI_DISPLAY_EGL, NULL);
+  return gst_vaapi_display_config (display,
       GST_VAAPI_DISPLAY_INIT_FROM_NATIVE_DISPLAY, &params);
 }
 

gst-libs/gst/vaapi/gstvaapidisplay_glx.c

@@ -128,7 +128,10 @@ gst_vaapi_display_glx_class_init (GstVaapiDisplayGLXClass * klass)
 GstVaapiDisplay *
 gst_vaapi_display_glx_new (const gchar * display_name)
 {
-  return gst_vaapi_display_new (g_object_new (GST_TYPE_VAAPI_DISPLAY_GLX, NULL),
+  GstVaapiDisplay *display;
+
+  display = g_object_new (GST_TYPE_VAAPI_DISPLAY_GLX, NULL);
+  return gst_vaapi_display_config (display,
       GST_VAAPI_DISPLAY_INIT_FROM_DISPLAY_NAME, (gpointer) display_name);
 }
 
@@ -146,8 +149,11 @@ gst_vaapi_display_glx_new (const gchar * display_name)
 GstVaapiDisplay *
 gst_vaapi_display_glx_new_with_display (Display * x11_display)
 {
+  GstVaapiDisplay *display;
+
   g_return_val_if_fail (x11_display != NULL, NULL);
 
-  return gst_vaapi_display_new (g_object_new (GST_TYPE_VAAPI_DISPLAY_GLX, NULL),
+  display = g_object_new (GST_TYPE_VAAPI_DISPLAY_GLX, NULL);
+  return gst_vaapi_display_config (display,
       GST_VAAPI_DISPLAY_INIT_FROM_NATIVE_DISPLAY, x11_display);
 }

gst-libs/gst/vaapi/gstvaapidisplay_priv.h

@@ -201,7 +201,7 @@ enum _GstVaapiDisplayInitType
 };
 
 GstVaapiDisplay *
-gst_vaapi_display_new (GstVaapiDisplay * display,
+gst_vaapi_display_config (GstVaapiDisplay * display,
     GstVaapiDisplayInitType init_type, gpointer init_value);
 
 G_END_DECLS

gst-libs/gst/vaapi/gstvaapidisplay_wayland.c

@@ -325,9 +325,11 @@ gst_vaapi_display_wayland_class_init (GstVaapiDisplayWaylandClass * klass)
 GstVaapiDisplay *
 gst_vaapi_display_wayland_new (const gchar * display_name)
 {
-  return gst_vaapi_display_new (g_object_new (GST_TYPE_VAAPI_DISPLAY_WAYLAND,
+  GstVaapiDisplay *display;
-          NULL), GST_VAAPI_DISPLAY_INIT_FROM_DISPLAY_NAME,
+
-      (gpointer) display_name);
+  display = g_object_new (GST_TYPE_VAAPI_DISPLAY_WAYLAND, NULL);
+  return gst_vaapi_display_config (display,
+      GST_VAAPI_DISPLAY_INIT_FROM_DISPLAY_NAME, (gpointer) display_name);
 }
 
 /**
@@ -344,10 +346,13 @@ gst_vaapi_display_wayland_new (const gchar * display_name)
 GstVaapiDisplay *
 gst_vaapi_display_wayland_new_with_display (struct wl_display * wl_display)
 {
+  GstVaapiDisplay *display;
+
   g_return_val_if_fail (wl_display, NULL);
 
-  return gst_vaapi_display_new (g_object_new (GST_TYPE_VAAPI_DISPLAY_WAYLAND,
+  display = g_object_new (GST_TYPE_VAAPI_DISPLAY_WAYLAND, NULL);
-          NULL), GST_VAAPI_DISPLAY_INIT_FROM_NATIVE_DISPLAY, wl_display);
+  return gst_vaapi_display_config (display,
+      GST_VAAPI_DISPLAY_INIT_FROM_NATIVE_DISPLAY, wl_display);
 }
 
 /**
@@ -368,6 +373,7 @@ GstVaapiDisplay *
 gst_vaapi_display_wayland_new_with_va_display (VADisplay va_display,
     struct wl_display * wl_display)
 {
+  GstVaapiDisplay *display;
   GstVaapiDisplayInfo info = {
     .va_display = va_display,
     .native_display = wl_display,
@@ -375,8 +381,14 @@ gst_vaapi_display_wayland_new_with_va_display (VADisplay va_display,
 
   g_return_val_if_fail (wl_display, NULL);
 
-  return gst_vaapi_display_new (g_object_new (GST_TYPE_VAAPI_DISPLAY_WAYLAND,
+  display = g_object_new (GST_TYPE_VAAPI_DISPLAY_WAYLAND, NULL);
-          NULL), GST_VAAPI_DISPLAY_INIT_FROM_VA_DISPLAY, &info);
+  if (!gst_vaapi_display_config (display,
+          GST_VAAPI_DISPLAY_INIT_FROM_VA_DISPLAY, &info)) {
+    gst_object_unref (display);
+    return NULL;
+  }
+
+  return display;
 }
 
 /**

gst-libs/gst/vaapi/gstvaapidisplay_x11.c

@@ -348,7 +348,10 @@ gst_vaapi_display_x11_init (GstVaapiDisplayX11 * display)
 GstVaapiDisplay *
 gst_vaapi_display_x11_new (const gchar * display_name)
 {
-  return gst_vaapi_display_new (g_object_new (GST_TYPE_VAAPI_DISPLAY_X11, NULL),
+  GstVaapiDisplay *display;
+
+  display = g_object_new (GST_TYPE_VAAPI_DISPLAY_X11, NULL);
+  return gst_vaapi_display_config (display,
       GST_VAAPI_DISPLAY_INIT_FROM_DISPLAY_NAME, (gpointer) display_name);
 }
 
@@ -366,9 +369,12 @@ gst_vaapi_display_x11_new (const gchar * display_name)
 GstVaapiDisplay *
 gst_vaapi_display_x11_new_with_display (Display * x11_display)
 {
+  GstVaapiDisplay *display;
+
   g_return_val_if_fail (x11_display, NULL);
 
-  return gst_vaapi_display_new (g_object_new (GST_TYPE_VAAPI_DISPLAY_X11, NULL),
+  display = g_object_new (GST_TYPE_VAAPI_DISPLAY_X11, NULL);
+  return gst_vaapi_display_config (display,
       GST_VAAPI_DISPLAY_INIT_FROM_NATIVE_DISPLAY, x11_display);
 }
 
@@ -376,6 +382,7 @@ GstVaapiDisplay *
 gst_vaapi_display_x11_new_with_va_display (VADisplay va_display,
     Display * x11_display)
 {
+  GstVaapiDisplay *display;
   GstVaapiDisplayInfo info = {
     .va_display = va_display,
     .native_display = x11_display,
@@ -383,7 +390,8 @@ gst_vaapi_display_x11_new_with_va_display (VADisplay va_display,
 
   g_return_val_if_fail (x11_display, NULL);
 
-  return gst_vaapi_display_new (g_object_new (GST_TYPE_VAAPI_DISPLAY_X11, NULL),
+  display = g_object_new (GST_TYPE_VAAPI_DISPLAY_X11, NULL);
+  return gst_vaapi_display_config (display,
       GST_VAAPI_DISPLAY_INIT_FROM_VA_DISPLAY, &info);
 }