d3d11: Remove unnecessary helper methods

We can query selected D3D_FEATURE_LEVEL and factory version
by using native D3D11 API

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1906>

sys/d3d11/gstd3d11device.c

@@ -82,8 +82,6 @@ struct _GstD3D11DevicePrivate
   ID3D11DeviceContext *device_context;
 
   IDXGIFactory1 *factory;
-  GstD3D11DXGIFactoryVersion factory_ver;
-  D3D_FEATURE_LEVEL feature_level;
   GstD3D11Format format_table[GST_D3D11_N_FORMATS];
 
   GRecMutex extern_lock;
@@ -612,12 +610,9 @@ gst_d3d11_device_constructed (GObject * object)
 
     hr = S_OK;
   }
-
-  priv->factory_ver = GST_D3D11_DXGI_FACTORY_5;
 #endif
 
   if (!factory) {
-    priv->factory_ver = GST_D3D11_DXGI_FACTORY_1;
     hr = CreateDXGIFactory1 (&IID_IDXGIFactory1, (void **) &factory);
   }
 
@@ -674,7 +669,6 @@ gst_d3d11_device_constructed (GObject * object)
   hr = D3D11CreateDevice ((IDXGIAdapter *) adapter, D3D_DRIVER_TYPE_UNKNOWN,
       NULL, d3d11_flags, feature_levels, G_N_ELEMENTS (feature_levels),
       D3D11_SDK_VERSION, &priv->device, &selected_level, &priv->device_context);
-  priv->feature_level = selected_level;
 
   if (!gst_d3d11_result (hr, NULL)) {
     /* Retry if the system could not recognize D3D_FEATURE_LEVEL_11_1 */
@@ -682,7 +676,6 @@ gst_d3d11_device_constructed (GObject * object)
         NULL, d3d11_flags, &feature_levels[1],
         G_N_ELEMENTS (feature_levels) - 1, D3D11_SDK_VERSION, &priv->device,
         &selected_level, &priv->device_context);
-    priv->feature_level = selected_level;
   }
 
   /* if D3D11_CREATE_DEVICE_DEBUG was enabled but couldn't create device,
@@ -697,7 +690,6 @@ gst_d3d11_device_constructed (GObject * object)
         NULL, d3d11_flags, feature_levels, G_N_ELEMENTS (feature_levels),
         D3D11_SDK_VERSION, &priv->device, &selected_level,
         &priv->device_context);
-    priv->feature_level = selected_level;
 
     if (!gst_d3d11_result (hr, NULL)) {
       /* Retry if the system could not recognize D3D_FEATURE_LEVEL_11_1 */
@@ -705,7 +697,6 @@ gst_d3d11_device_constructed (GObject * object)
           NULL, d3d11_flags, &feature_levels[1],
           G_N_ELEMENTS (feature_levels) - 1, D3D11_SDK_VERSION, &priv->device,
           &selected_level, &priv->device_context);
-      priv->feature_level = selected_level;
     }
   }
 
@@ -962,23 +953,6 @@ gst_d3d11_device_get_dxgi_factory_handle (GstD3D11Device * device)
   return device->priv->factory;
 }
 
-GstD3D11DXGIFactoryVersion
-gst_d3d11_device_get_chosen_dxgi_factory_version (GstD3D11Device * device)
-{
-  g_return_val_if_fail (GST_IS_D3D11_DEVICE (device),
-      GST_D3D11_DXGI_FACTORY_UNKNOWN);
-
-  return device->priv->factory_ver;
-}
-
-D3D_FEATURE_LEVEL
-gst_d3d11_device_get_chosen_feature_level (GstD3D11Device * device)
-{
-  g_return_val_if_fail (GST_IS_D3D11_DEVICE (device), 0);
-
-  return device->priv->feature_level;
-}
-
 void
 gst_d3d11_device_lock (GstD3D11Device * device)
 {

sys/d3d11/gstd3d11device.h

@@ -37,17 +37,6 @@ G_BEGIN_DECLS
 
 #define GST_D3D11_DEVICE_HANDLE_CONTEXT_TYPE "gst.d3d11.device.handle"
 
-typedef enum
-{
-  GST_D3D11_DXGI_FACTORY_UNKNOWN = 0,
-  GST_D3D11_DXGI_FACTORY_1,
-  GST_D3D11_DXGI_FACTORY_2,
-  GST_D3D11_DXGI_FACTORY_3,
-  GST_D3D11_DXGI_FACTORY_4,
-  GST_D3D11_DXGI_FACTORY_5,
-} GstD3D11DXGIFactoryVersion;
-
-
 struct _GstD3D11Device
 {
   GstObject parent;
@@ -77,10 +66,6 @@ ID3D11DeviceContext * gst_d3d11_device_get_device_context_handle (GstD3D11Device
 
 IDXGIFactory1 *       gst_d3d11_device_get_dxgi_factory_handle (GstD3D11Device * device);
 
-GstD3D11DXGIFactoryVersion gst_d3d11_device_get_chosen_dxgi_factory_version (GstD3D11Device * device);
-
-D3D_FEATURE_LEVEL     gst_d3d11_device_get_chosen_feature_level (GstD3D11Device * device);
-
 void                  gst_d3d11_device_lock               (GstD3D11Device * device);
 
 void                  gst_d3d11_device_unlock             (GstD3D11Device * device);

sys/d3d11/gstd3d11shader.c

@@ -88,13 +88,15 @@ compile_shader (GstD3D11Device * device, const gchar * shader_source,
   const gchar *shader_target;
   D3D_FEATURE_LEVEL feature_level;
   HRESULT hr;
+  ID3D11Device *device_handle;
 
   if (!gst_d3d11_shader_init ()) {
     GST_ERROR ("D3DCompiler is unavailable");
     return NULL;
   }
 
-  feature_level = gst_d3d11_device_get_chosen_feature_level (device);
+  device_handle = gst_d3d11_device_get_device_handle (device);
+  feature_level = ID3D11Device_GetFeatureLevel (device_handle);
 
   if (is_pixel_shader) {
     if (feature_level >= D3D_FEATURE_LEVEL_10_0)

sys/d3d11/plugin.c

@@ -140,8 +140,9 @@ plugin_init (GstPlugin * plugin)
    */
   if (device) {
     D3D_FEATURE_LEVEL feature_level = D3D_FEATURE_LEVEL_10_0;
+    ID3D11Device *device_handle = gst_d3d11_device_get_device_handle (device);
 
-    feature_level = gst_d3d11_device_get_chosen_feature_level (device);
+    feature_level = ID3D11Device_GetFeatureLevel (device_handle);
     if (feature_level >= D3D_FEATURE_LEVEL_10_0)
       video_sink_rank = GST_RANK_PRIMARY;
   }