docs/design/draft-klass.txt: Add existing category analysis.

Original commit message from CVS:
* docs/design/draft-klass.txt:
Add existing category analysis.
* gst/gstcaps.c:
Fix doc example, framerate is a fraction.

ChangeLog

@@ -1,3 +1,11 @@
+2007-02-13  Stefan Kost  <ensonic@users.sf.net>
+
+	* docs/design/draft-klass.txt:
+	  Add existing category analysis.
+	  
+	* gst/gstcaps.c:
+	  Fix doc example, framerate is a fraction.
+
 2007-02-12  Stefan Kost  <ensonic@users.sf.net>
 
 	* configure.ac:

docs/design/draft-klass.txt

@@ -105,6 +105,16 @@ Proposal:
      * Visualisation : intended to be used for audio visualisation
      * Debug         : intended usage is more for debugging purposes.
      
+   - Categories found, but not yet in one of the above lists
+   
+     * Bin           : playbin, decodebin, bin, pipeline
+     * Codec         : lots of decoders, encoder, demuxers
+                       should be removed?
+     * Generic       : should be removed?
+     * File          : like network, should go to Extra?
+     * Editor        : gnonlin, textoverlays
+     * DVD, GDP, LADSPA, Parser, Player, Subtitle, Testing, ...
+     
   3) suggested order:
 
      <functional>[/<media type>]*[/<extra...>]*
@@ -138,7 +148,7 @@ Proposal:
      decodebin        : Decoder/Demuxer
      level            : Filter/Analyzer/Audio
      tee              : Connector/Debug
-   
+
 Use cases:
 
   - get a list of all elements implementing a video effect (pitivi):

gst/gstcaps.c

@@ -26,8 +26,8 @@
  * They are composed of an array of #GstStructure.
  *
  * Caps are exposed on #GstPadTemplate to describe all possible types a
- * given pad can handle. They are also stored in the registry along with
- * a description of the element.
+ * given pad can handle. They are also stored in the #GstRegistry along with
+ * a description of the #GstElement.
  *
  * Caps are exposed on the element pads using the gst_pad_get_caps() pad
  * function. This function describes the possible types that the pad can
@@ -45,7 +45,7 @@
  *  GstCaps *caps;
  *  caps = gst_caps_new_simple ("video/x-raw-yuv",
  *       "format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('I', '4', '2', '0'),
- *       "framerate", G_TYPE_DOUBLE, 25.0,
+ *       "framerate", GST_TYPE_FRACTION, 25, 1,
  *       "pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
  *       "width", G_TYPE_INT, 320,
  *       "height", G_TYPE_INT, 240,
@@ -60,7 +60,7 @@
  * Various methods exist to work with the media types such as subtracting
  * or intersecting.
  *
- * Last reviewed on 2005-11-23 (0.9.5)
+ * Last reviewed on 2007-02-13 (0.10.10)
  */
 
 #ifdef HAVE_CONFIG_H