docs: Generate ges plugin doc

docs/meson.build

@@ -89,17 +89,31 @@ libs_doc = [hotdoc.generate_doc('gst-editing-services',
     disable_incremental_build: true,
 )]
 
-plugins_doc = [hotdoc.generate_doc('nle',
+plugins_doc = []
+list_plugin_res = run_command(python3, '-c',
+'''
+import sys
+import json
+
+with open("@0@") as f:
+    print(':'.join(json.load(f).keys()), end='')
+'''.format(plugins_cache))
+
+assert(list_plugin_res.returncode() == 0,
+  'Could not list plugins from @0@\n@1@\n@1@'.format(plugins_cache, list_plugin_res.stdout(), list_plugin_res.stderr()))
+
+
+foreach plugin_name: list_plugin_res.stdout().split(':')
+    plugins_doc += [hotdoc.generate_doc(plugin_name,
         project_version: apiversion,
-    extra_assets: [join_paths(meson.current_source_dir(), 'images')],
-    sitemap: 'nle-sitemap.txt',
-    index: 'nle-index.md',
-    dependencies: [nle],
-    disable_incremental_build: true,
-    gst_order_generated_subpages: true,
-    gst_index: 'nle-index.md',
-    gst_c_sources: ['../../plugins/nle/*.[ch]'],
+        sitemap: 'plugins/sitemap.txt',
+        index: 'plugins/index.md',
+        gst_index: 'plugins/index.md',
         gst_smart_index: true,
+        gst_c_sources: ['../plugins/*/*.[ch]',],
+        dependencies: [gst_dep, plugins],
+        gst_order_generated_subpages: true,
         gst_cache_file: plugins_cache,
-    gst_plugin_name: 'nle',
-)]
+        gst_plugin_name: plugin_name,
+    )]
+endforeach

meson.build

@@ -173,6 +173,7 @@ foreach extra_arg : warning_flags
   endif
 endforeach
 
+python3 = import('python').find_installation()
 configinc = include_directories('.')
 subdir('ges')
 subdir('plugins')
@@ -209,7 +210,6 @@ else:
         prefix, 'Lib', 'Python%d%d' % (version.major, version.minor),
         'site-packages', 'gi', 'overrides'))
 '''
-python3 = import('python').find_installation()
 pygi_override_dir = get_option('pygi-overrides-dir')
 if pygi_override_dir == ''
     cres = run_command(python3, '-c', override_detector, get_option('prefix'))

plugins/ges/gessrc.c

@@ -20,7 +20,7 @@
  *
 
  **
- * SECTION:gessrc
+ * SECTION:element-gessrc
  * @short_description: A GstBin subclasses use to use GESTimeline
  * as sources inside any GstPipeline.
  * @see_also: #GESTimeline

plugins/nle/nleoperation.c

@@ -131,7 +131,7 @@ nle_operation_class_init (NleOperationClass * klass)
    *
    * Specifies the number of sink pads the operation should provide.
    * If the sinks property is -1 (the default) pads are only created as
-   * demanded via get_request_pad() calls on the element.
+   * demanded via `get_request_pad()` calls on the element.
    */
   g_object_class_install_property (gobject_class, ARG_SINKS,
       g_param_spec_int ("sinks", "Sinks",