plugin: add padding and API version

Signed-off-by: Jonny Lamb <jonny.lamb@collabora.co.uk>

1 files changed, 13 insertions, 3 deletions

diff --git a/salut/plugin.h b/salut/plugin.h
index 88d716b1..e028b169 100644
--- a/salut/plugin.h
+++ b/salut/plugin.h
@@ -46,15 +46,17 @@ typedef GPtrArray * (*SalutPluginCreateChannelManagersImpl) (
     SalutPlugin *plugin,
     TpBaseConnection *connection);
 
+#define SALUT_PLUGIN_CURRENT_VERSION 1
+
 struct _SalutPluginInterface
 {
   GTypeInterface parent;
 
   /**
-   * The plugin's version, conventionally a "."-separated sequence of
-   * numbers.
+   * The version of the SalutPluginInterface struct design. The
+   * current version is at %SALUT_PLUGIN_CURRENT_VERSION.
    */
-  const gchar *version;
+  guint api_version;
 
   /**
    * An arbitrary human-readable name identifying this plugin.
@@ -62,9 +64,17 @@ struct _SalutPluginInterface
   const gchar *name;
 
   /**
+   * The plugin's version, conventionally a "."-separated sequence of
+   * numbers.
+   */
+  const gchar *version;
+
+  /**
    * An implementation of salut_plugin_create_channel_managers().
    */
   SalutPluginCreateChannelManagersImpl create_channel_managers;
+
+  GCallback _padding[7];
 };
 
 GType salut_plugin_get_type (void);