example: va: Add skin tone enhancement.

If camera is used as input stream and skin tone parameter is available
in vapostproc, and no random changes are enabled, the skin tone will
be enabled.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2470>

diff --git a/tests/examples/va/multiple-vpp.c b/tests/examples/va/multiple-vpp.c
index b066e29..05d680e 100644 (file)
--- a/tests/examples/va/multiple-vpp.c
+++ b/tests/examples/va/multiple-vpp.c
@@ -158,23 +158,34 @@ message_handler (GstBus * bus, GstMessage * msg, gpointer data)
 }
 
 static void
-config_vpp (GstElement * vpp)
+config_simple (struct _app *app)
 {
   GParamSpec *pspec;
-  GObjectClass *g_class = G_OBJECT_GET_CLASS (vpp);
+  GObjectClass *g_class = G_OBJECT_GET_CLASS (app->vpp);
   const static gchar *props[] = { "brightness", "hue", "saturation",
     "contrast"
   };
   gfloat max;
   guint i;
 
+  if (camera && (pspec = g_object_class_find_property (g_class, "skin-tone"))) {
+    if (G_PARAM_SPEC_TYPE (pspec) == G_TYPE_BOOLEAN) {
+      g_object_set (app->vpp, "skin-tone", TRUE, NULL);
+    } else {
+      max = ((GParamSpecFloat *) pspec)->maximum;
+      g_object_set (app->vpp, "skin-tone", max, NULL);
+    }
+
+    return;
+  }
+
   for (i = 0; i < G_N_ELEMENTS (props); i++) {
     pspec = g_object_class_find_property (g_class, props[i]);
     if (!pspec)
       continue;
 
     max = ((GParamSpecFloat *) pspec)->maximum;
-    g_object_set (vpp, props[i], max, NULL);
+    g_object_set (app->vpp, props[i], max, NULL);
   }
 }
 
@@ -208,7 +219,7 @@ build_pipeline (struct _app *app)
 
   app->vpp = gst_bin_get_by_name (GST_BIN (app->pipeline), "vpp");
   if (!randomcb && !randomdir && !randomsharpen && !randomcrop)
-    config_vpp (app->vpp);
+    config_simple (app);
 
   app->crop = gst_bin_get_by_name (GST_BIN (app->pipeline), "crop");