docs: try to make the generated docs more useful

Generate the section.txt file. Update the -docs.sgml file with the new sections.
If we want to actually see the baseclasses, we should define them with a _get_type() function
and have the wrapped types subclass them.

docs/plugins/Makefile.am

@@ -22,7 +22,7 @@ DOC_MAIN_SGML_FILE=$(DOC_MODULE)-docs.sgml
 DOC_SOURCE_DIR = $(top_srcdir)/ext/libav
 
 # Extra options to supply to gtkdoc-scan.
-SCAN_OPTIONS=
+SCAN_OPTIONS=--rebuild-sections
 
 # Extra options to supply to gtkdoc-mkdb.
 MKDB_OPTIONS=--sgml-mode
@@ -47,9 +47,6 @@ IGNORE_CFILES =
 # but I'm not sure about that - it might be this Just Works given that
 # the registry won't have the element
 
-# huh? thats not a header 
-#EXTRA_HFILES = $(DOC_SOURCE_DIR)/gstffmpegenc.c
-
 # Images to copy into HTML directory.
 HTML_IMAGES =
 
@@ -61,8 +58,9 @@ extra_files =
 
 # CFLAGS and LDFLAGS for compiling scan program. Only needed if your app/lib
 # contains GtkObjects/GObjects and you want to document signals and properties.
-GTKDOC_CFLAGS = $(GST_BASE_CFLAGS) -I$(top_builddir) -I$(top_builddir)/gst-libs
-GTKDOC_LIBS = $(GST_BASE_LIBS)
+GTKDOC_CFLAGS = $(LIBAV_CFLAGS) $(GST_CFLAGS) -I$(top_builddir) -I$(top_builddir)/ext/libav
+GTKDOC_LIBS = -L$(top_builddir)/ext/libav -lgstlibav \
+  $(LIBAV_LIBS) $(GST_BASE_LIBS)
 
 GTKDOC_CC=$(LIBTOOL) --tag=CC --mode=compile $(CC)
 GTKDOC_LD=$(LIBTOOL) --tag=CC --mode=link $(CC)

docs/plugins/gst-libav-plugins-docs.sgml

@@ -7,27 +7,34 @@
 
 <book id="index" xmlns:xi="http://www.w3.org/2003/XInclude">
   <bookinfo>
-    <title>GStreamer FFMPeg &GST_API_VERSION; Plugins Reference Manual</title>
+    <title>GStreamer libav &GST_API_VERSION; Plugins Reference Manual</title>
     <releaseinfo>
-      for GStreamer FFMPeg Plugins &GST_API_VERSION; (&GST_VERSION;)
+      for GStreamer libav Plugins &GST_API_VERSION; (&GST_VERSION;)
       The latest version of this documentation can be found on-line at
       <ulink role="online-location" url="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-ffmpeg-plugins/html/">http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-ffmpeg-plugins/html/</ulink>.
     </releaseinfo>
   </bookinfo>
 
   <chapter>
-    <title>gst-ffmpeg Element Types</title>
-    <xi:include href="xml/type-ffenc.xml" />
+    <title>gst-libav Base and Support classes</title>
+    <xi:include href="xml/gstav.xml" />
+    <xi:include href="xml/gstavauddec.xml" />
+    <xi:include href="xml/gstavaudenc.xml" />
+    <xi:include href="xml/gstavcfg.xml" />
+    <xi:include href="xml/gstavcodecmap.xml" />
+    <xi:include href="xml/gstavprotocol.xml" />
+    <xi:include href="xml/gstavutils.xml" />
+    <xi:include href="xml/gstavviddec.xml" />
+    <xi:include href="xml/gstavvidenc.xml" />
   </chapter>
 
   <chapter>
-    <title>gst-ffmpeg Elements</title>
-    <xi:include href="xml/element-ffenc_h263p.xml" />
-    <xi:include href="xml/element-ffenc_mpeg4.xml" />
+    <title>gst-libav Plugins</title>
+    <xi:include href="xml/plugin-libav.xml" />
   </chapter>
 
   <chapter>
-    <title>gst-ffmpeg Plugins</title>
-    <xi:include href="xml/plugin-libav.xml" />
+    <title>Object Hierarchy</title>
+    <xi:include href="xml/tree_index.sgml" />
   </chapter>
 </book>

docs/plugins/gst-libav-plugins-sections.txt

-<SECTION>
-<FILE>type-ffenc</FILE>
-<TITLE>ffenc</TITLE>
-GstFFMpegEnc
-
-GstFFMpegEncMeMethod
-
-<SUBSECTION Standard>
-GstFFMpegEncClass
-<SUBSECTION Private>
-</SECTION>
-
-<SECTION>
-<FILE>element-ffenc_h263p</FILE>
-<TITLE>ffenc_h263p</TITLE>
-ffenc_h263p
-</SECTION>
-
-<SECTION>
-<FILE>element-ffenc_mpeg4</FILE>
-<TITLE>ffenc_mpeg4</TITLE>
-ffenc_mpeg4
-</SECTION>

docs/plugins/gst-libav-plugins.hierarchy

@@ -438,7 +438,6 @@ GObject
       GstPlugin
       GstPluginFeature
         GstElementFactory
-        GstTracerFactory
         GstTypeFindFactory
       GstRegistry
       GstTask