decoder: use an object to create the decoder device

Allowing the window to be NULL, which is OK for D3D11/D3D9/NVDEC.

include/vlc_codec.h

@@ -604,8 +604,8 @@ typedef int (*vlc_decoder_device_Open)(vlc_decoder_device *device,
  * This function will be hidden in the future. It is now used by opengl vout
  * module as a transition.
  */
-VLC_USED vlc_decoder_device *
-vlc_decoder_device_Create(vout_window_t *window);
+vlc_decoder_device *
+vlc_decoder_device_Create(vlc_object_t *, vout_window_t *window) VLC_USED;
 
 /**
  * Hold a decoder device

src/input/decoder_helpers.c

@@ -182,13 +182,13 @@ static int decoder_device_Open(void *func, bool forced, va_list ap)
 }
 
 vlc_decoder_device *
-vlc_decoder_device_Create(vout_window_t *window)
+vlc_decoder_device_Create(vlc_object_t *o, vout_window_t *window)
 {
     struct vlc_decoder_device_priv *priv =
-            vlc_object_create(window, sizeof (*priv));
+            vlc_object_create(o, sizeof (*priv));
     if (!priv)
         return NULL;
-    char *name = var_InheritString(window, "dec-dev");
+    char *name = var_InheritString(o, "dec-dev");
     module_t *module = vlc_module_load(&priv->device, "decoder device", name,
                                     true, decoder_device_Open, &priv->device,
                                     window);

src/video_output/video_output.c

@@ -2033,7 +2033,7 @@ static int vout_EnableWindow(vout_thread_t *vout, const video_format_t *original
     if (pp_dec_device)
     {
         if (sys->dec_device == NULL)
-            sys->dec_device = vlc_decoder_device_Create(sys->display_cfg.window);
+            sys->dec_device = vlc_decoder_device_Create(&vout->obj, sys->display_cfg.window);
         *pp_dec_device = sys->dec_device ? vlc_decoder_device_Hold( sys->dec_device ) : NULL;
     }
     vlc_mutex_unlock(&sys->window_lock);