[cheese/three-point-oh] Reduced cpu usage by half. Reduced preview sizes as well.

[Yuvaraj Pandian <yuvipanda src gnome org>]

commit 472c6d20514081f7cba12021d3f06ae005210331
Author: Yuvaraj Pandian T <yuvipanda gmail com>
Date:   Wed Jun 30 14:52:04 2010 +0530

    Reduced cpu usage by half. Reduced preview sizes as well.

 libcheese/cheese-camera.c  |   17 ++++++++++++++---
 valasrc/cheese-window.vala |   10 +++++-----
 2 files changed, 19 insertions(+), 8 deletions(-)
---
diff --git a/libcheese/cheese-camera.c b/libcheese/cheese-camera.c
index 8a8a598..88fc8e7 100644
--- a/libcheese/cheese-camera.c
+++ b/libcheese/cheese-camera.c
@@ -822,23 +822,34 @@ void
 cheese_camera_connect_effect_texture (CheeseCamera *camera, CheeseEffect *effect, ClutterTexture *texture)
 {
   CheeseCameraPrivate *priv = CHEESE_CAMERA_GET_PRIVATE (camera);
-    
+
+  GstElement *downscaler;
   GstElement *effect_filter;
   GstElement *display_element;
   GstElement *display_queue;
   gboolean ok;
   gboolean is_playing;
+  GError *err = NULL;
 
   is_playing = priv->pipeline_is_playing;
   
   cheese_camera_stop (camera);
 
   display_queue = gst_element_factory_make ("queue", NULL);
+  downscaler = gst_parse_bin_from_description ("videoscale ! video/x-raw-yuv,width=160,height=120 ! ffmpegcolorspace", TRUE, &err);
   effect_filter = cheese_camera_element_from_effect (camera, effect);
   display_element = clutter_gst_video_sink_new (texture);
+
+  if (!downscaler || (err != NULL))
+  {
+      g_error_free (err);
+      g_error ("ERROR downscaling");
+  }
+  
+  g_object_set_property (G_OBJECT (downscaler), "method", 0);
   
-  gst_bin_add_many (GST_BIN (priv->pipeline), effect_filter, display_queue, display_element, NULL);
-  ok = gst_element_link_many (priv->camera_tee, effect_filter, display_queue, display_element, NULL);
+  gst_bin_add_many (GST_BIN (priv->pipeline), downscaler, effect_filter, display_queue, display_element, NULL);
+  ok = gst_element_link_many (priv->camera_tee, downscaler, effect_filter, display_queue, display_element, NULL);
 
   if (is_playing)
     cheese_camera_play (camera);
diff --git a/valasrc/cheese-window.vala b/valasrc/cheese-window.vala
index 1cebfc2..8e0c273 100644
--- a/valasrc/cheese-window.vala
+++ b/valasrc/cheese-window.vala
@@ -446,9 +446,9 @@ public class Cheese.MainWindow : Gtk.Window
 	  effects_grid.child_x_align = Mx.Align.MIDDLE;
 	  effects_grid.child_y_align = Mx.Align.MIDDLE;	
 	  effects_grid.orientation = Mx.Orientation.VERTICAL;
-	  effects_grid.max_stride = 2;
-	  effects_grid.column_spacing = 50;
-	  effects_grid.row_spacing = 50;
+//	  effects_grid.max_stride = 2;
+	  effects_grid.column_spacing = 20;
+	  effects_grid.row_spacing = 20;
 	  
 	  effects_manager = new EffectsManager();
 	  effects_manager.load_effects();
@@ -458,8 +458,8 @@ public class Cheese.MainWindow : Gtk.Window
 	  foreach (Effect effect in effects_manager.effects)
 	  {
 		  Clutter.Texture texture = new Clutter.Texture();
-		  texture.width = 480;
-		  texture.height = 360;
+		  texture.width = 160;
+		  texture.height = 120;
 
 		  Mx.Button button = new Mx.Button();
 		  button.add((Clutter.Actor)texture);