[empathy] early return if the camera_state is already the one we want

[Guillaume Desmottes <gdesmott src gnome org>]

commit fe97bdb9c202f40f57b1438df9d0045fad8f40c8
Author: Guillaume Desmottes <guillaume desmottes collabora co uk>
Date:   Tue Nov 24 16:28:49 2009 +0000

    early return if the camera_state is already the one we want

 src/empathy-call-window.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/src/empathy-call-window.c b/src/empathy-call-window.c
index 8d4849d..eda10f1 100644
--- a/src/empathy-call-window.c
+++ b/src/empathy-call-window.c
@@ -770,6 +770,9 @@ tool_button_camera_off_toggled_cb (GtkToggleToolButton *toggle,
       return;
     }
 
+  if (priv->camera_state == CAMERA_STATE_OFF)
+    return;
+
   DEBUG ("disable camera");
   disable_camera (self);
 }
@@ -809,6 +812,9 @@ tool_button_camera_preview_toggled_cb (GtkToggleToolButton *toggle,
       return;
     }
 
+  if (priv->camera_state == CAMERA_STATE_PREVIEW)
+    return;
+
   DEBUG ("enable preview");
   enable_preview (self);
 }
@@ -848,6 +854,9 @@ tool_button_camera_on_toggled_cb (GtkToggleToolButton *toggle,
       return;
     }
 
+  if (priv->camera_state == CAMERA_STATE_ON)
+    return;
+
   DEBUG ("enable camera");
   enable_camera (self);
 }