d3d12videosink: Add max-mip-level property

Add support for automatic mipmap generation depending on viewport size

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8290>

subprojects/gst-plugins-bad/sys/d3d12/gstd3d12videosink.cpp

@@ -113,6 +113,7 @@ enum
   PROP_SATURATION,
   PROP_BRIGHTNESS,
   PROP_CONTRAST,
+  PROP_MAX_MIP_LEVELS,
 };
 
 #define DEFAULT_ADAPTER -1
@@ -139,6 +140,7 @@ enum
 #define DEFAULT_SATURATION 1.0
 #define DEFAULT_BRIGHTNESS 0.0
 #define DEFAULT_CONTRAST 1.0
+#define DEFAULT_MAX_MIP_LEVELS 1
 
 enum
 {
@@ -567,6 +569,18 @@ gst_d3d12_video_sink_class_init (GstD3D12VideoSinkClass * klass)
           (GParamFlags) (GST_PARAM_CONTROLLABLE |
               G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
 
+  /**
+   * GstD3D12VideoSink:max-mip-levels:
+   *
+   * Since: 1.26
+   */
+  g_object_class_install_property (object_class, PROP_MAX_MIP_LEVELS,
+      g_param_spec_uint ("max-mip-levels", "Max Mip Levels",
+          "Maximum mip levels of shader resource to create "
+          "if viewport size is smaller than shader resource "
+          "(0 = maximum level)", 0, G_MAXUINT16, DEFAULT_MAX_MIP_LEVELS,
+          (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
+
   /**
    * GstD3D12VideoSink::overlay:
    * @d3d12videosink: the d3d12videosink element that emitted the signal
@@ -844,6 +858,10 @@ gst_d3d12_video_sink_set_property (GObject * object, guint prop_id,
           color_balance_label = "CONTRAST";
         }
         break;
+      case PROP_MAX_MIP_LEVELS:
+        gst_d3d12_window_set_mip_levels (priv->window, priv->redraw_on_update,
+            g_value_get_uint (value));
+        break;
       default:
         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
         break;
@@ -958,6 +976,9 @@ gst_d3d12_video_sink_get_property (GObject * object, guint prop_id,
     case PROP_CONTRAST:
       g_value_set_double (value, gst_d3d12_window_get_contrast (priv->window));
       break;
+    case PROP_MAX_MIP_LEVELS:
+      g_value_set_uint (value, gst_d3d12_window_get_mip_levels (priv->window));
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
@@ -1278,7 +1299,9 @@ gst_d3d12_video_sink_set_buffer (GstD3D12VideoSink * self,
         GST_D3D12_CONVERTER_ALPHA_MODE_UNSPECIFIED,
         GST_D3D12_CONVERTER_OPT_COLOR_BALANCE,
         GST_TYPE_D3D12_CONVERTER_COLOR_BALANCE,
-        GST_D3D12_CONVERTER_COLOR_BALANCE_ENABLED, nullptr);
+        GST_D3D12_CONVERTER_COLOR_BALANCE_ENABLED,
+        GST_D3D12_CONVERTER_OPT_MIP_GEN, GST_TYPE_D3D12_CONVERTER_MIP_GEN,
+        GST_D3D12_CONVERTER_MIP_GEN_ENABLED, nullptr);
 
     ret = gst_d3d12_window_prepare (priv->window, self->device,
         GST_VIDEO_SINK_WIDTH (self), GST_VIDEO_SINK_HEIGHT (self), priv->caps,

subprojects/gst-plugins-bad/sys/d3d12/gstd3d12window.cpp

@@ -146,6 +146,7 @@ struct GstD3D12WindowPrivate
   gdouble saturation = 1.0;
   gdouble brightness = 0.0;
   gdouble contrast = 1.0;
+  guint mip_levels = 1;
 
   /* fullscreen related variables */
   std::atomic<gboolean> fullscreen_on_alt_enter = { FALSE };
@@ -528,7 +529,8 @@ gst_d3d12_window_render (GstD3D12Window * self, SwapChainResource * resource,
           "dest-y", priv->output_rect.y, "dest-width", priv->output_rect.w,
           "dest-height", priv->output_rect.h, "hue", priv->hue,
           "saturation", priv->saturation, "brightness", priv->brightness,
-          "contrast", priv->contrast, nullptr);
+          "contrast", priv->contrast, "max-mip-levels", priv->mip_levels,
+          nullptr);
 
       if (gst_d3d12_need_transform (priv->rotation_x, priv->rotation_y,
               priv->rotation_z, priv->scale_x, priv->scale_y)) {
@@ -790,7 +792,7 @@ gst_d3d12_window_set_buffer (GstD3D12Window * window, GstBuffer * buffer)
   auto proxy = priv->proxy.lock ();
 
   if (!proxy) {
-    GST_WARNING_OBJECT (window, "Window was closed");
+    GST_DEBUG_OBJECT (window, "Window was closed");
     return GST_D3D12_WINDOW_FLOW_CLOSED;
   }
 
@@ -1133,3 +1135,31 @@ gst_d3d12_window_get_contrast (GstD3D12Window * window)
   std::lock_guard < std::recursive_mutex > lk (priv->lock);
   return priv->contrast;
 }
+
+void
+gst_d3d12_window_set_mip_levels (GstD3D12Window * window, gboolean immediate,
+    guint value)
+{
+  auto priv = window->priv;
+  gboolean updated = FALSE;
+
+  {
+    std::lock_guard < std::recursive_mutex > lk (priv->lock);
+    if (priv->mip_levels != value) {
+      priv->mip_levels = value;
+      priv->output_updated = TRUE;
+      updated = TRUE;
+    }
+  }
+
+  if (updated && immediate)
+    gst_d3d12_window_set_buffer (window, nullptr);
+}
+
+guint
+gst_d3d12_window_get_mip_levels (GstD3D12Window * window)
+{
+  auto priv = window->priv;
+  std::lock_guard < std::recursive_mutex > lk (priv->lock);
+  return priv->mip_levels;
+}

subprojects/gst-plugins-bad/sys/d3d12/gstd3d12window.h

@@ -187,5 +187,11 @@ gboolean         gst_d3d12_window_set_contrast (GstD3D12Window * window,
 
 gdouble          gst_d3d12_window_get_contrast (GstD3D12Window * window);
 
+void             gst_d3d12_window_set_mip_levels (GstD3D12Window * window,
+                                                  gboolean immediate,
+                                                  guint value);
+
+guint            gst_d3d12_window_get_mip_levels (GstD3D12Window * window);
+
 G_END_DECLS