[sysprof] cursor: add helper to get reader

[Christian Hergert <chergert src gnome org>]

commit 590d317a94fadcb72660d4c56d92c0436fb82f40
Author: Christian Hergert <chergert redhat com>
Date:   Wed May 16 12:42:44 2018 +0100

    cursor: add helper to get reader
    
    We might need this so that we can access to the updated end time that was
    determined by iterating frames.

 lib/capture/sp-capture-cursor.c |   15 +++++++++++++++
 lib/capture/sp-capture-cursor.h |    1 +
 2 files changed, 16 insertions(+), 0 deletions(-)
---
diff --git a/lib/capture/sp-capture-cursor.c b/lib/capture/sp-capture-cursor.c
index eb67524..6877bec 100644
--- a/lib/capture/sp-capture-cursor.c
+++ b/lib/capture/sp-capture-cursor.c
@@ -210,3 +210,18 @@ sp_capture_cursor_new (SpCaptureReader *reader)
 
   return self;
 }
+
+/**
+ * sp_capture_cursor_get_reader:
+ *
+ * Gets the underlying reader that is used by the cursor.
+ *
+ * Returns: (transfer none): An #SpCaptureReader
+ */
+SpCaptureReader *
+sp_capture_cursor_get_reader (SpCaptureCursor *self)
+{
+  g_return_val_if_fail (SP_IS_CAPTURE_CURSOR (self), NULL);
+
+  return self->reader;
+}
diff --git a/lib/capture/sp-capture-cursor.h b/lib/capture/sp-capture-cursor.h
index fb09656..d4ea900 100644
--- a/lib/capture/sp-capture-cursor.h
+++ b/lib/capture/sp-capture-cursor.h
@@ -42,6 +42,7 @@ typedef gboolean (*SpCaptureCursorCallback) (const SpCaptureFrame *frame,
                                              gpointer              user_data);
 
 SpCaptureCursor *sp_capture_cursor_new            (SpCaptureReader         *reader);
+SpCaptureReader *sp_capture_cursor_get_reader     (SpCaptureCursor         *self);
 void             sp_capture_cursor_foreach        (SpCaptureCursor         *self,
                                                    SpCaptureCursorCallback  callback,
                                                    gpointer                 user_data);