doxygen: Fix doxygen errors

This patch fixes a number of errors and warning messages in the doxygen
log. Specifically, it addresses:
* A number of files incorrectly places a '\brief' tag immediately after
  a '\file' tag. Doing so emits a warning, as '\file' takes an optional
  argument specifying which file the doxygen comment is for. As '\brief'
  is not a file, doxygen was unamused.
* A grouping of Stasis Topics and Messages in rtp_engine.h was
  incorrectly terminated. We now correctly terminate the grouping, which
  prevents members of rtp_engine.h from showing up in the wrong group.
* Group indicators which are not part of the Stasis Topics and Messages
  group were removed. Group indicators without an \addtogroup or
  \ingroup have no meaning.

Change-Id: Ia1415ffec6767e27233ae1cae5ed5970de5656d4

5 files changed, 12 insertions, 33 deletions

diff --git a/include/asterisk/event.h b/include/asterisk/event.h
index 7eea0581d..dbc080da8 100644
--- a/include/asterisk/event.h
+++ b/include/asterisk/event.h
@@ -35,7 +35,7 @@
  * modules in Asterisk.
  *  - CEL uses the \ref ast_event representation to pass information to registered
  *    backends.
- *  - The \file res_corosync module publishes \ref ast_event representations of
+ *  - The \file res_corosync.c module publishes \ref ast_event representations of
  *    information to other Asterisk instances in a cluster.
  *  - Security event represent their event types and data using this system.
  *  - Theoretically, any \ref stasis message can use this system to pass
diff --git a/include/asterisk/rtp_engine.h b/include/asterisk/rtp_engine.h
index a94cb4213..c7f6511f9 100644
--- a/include/asterisk/rtp_engine.h
+++ b/include/asterisk/rtp_engine.h
@@ -2316,7 +2316,7 @@ struct stasis_message_type *ast_rtp_rtcp_received_type(void);
  */
 struct stasis_topic *ast_rtp_topic(void);
 
-/* }@ */
+/* @} */
 
 #if defined(__cplusplus) || defined(c_plusplus)
 }
diff --git a/include/asterisk/sem.h b/include/asterisk/sem.h
index 6d655d63e..fcab82a5e 100644
--- a/include/asterisk/sem.h
+++ b/include/asterisk/sem.h
@@ -20,7 +20,9 @@
 #define ASTERISK_SEMAPHORE_H
 
 /*!
- * \file Asterisk semaphore API
+ * \file
+ *
+ * \brief Asterisk semaphore API
  *
  * This API is a thin wrapper around the POSIX semaphore API (when available),
  * so see the POSIX documentation for further details.
diff --git a/include/asterisk/stasis.h b/include/asterisk/stasis.h
index 0b1b1e83f..aa681e13e 100644
--- a/include/asterisk/stasis.h
+++ b/include/asterisk/stasis.h
@@ -173,8 +173,6 @@
 #include "asterisk/utils.h"
 #include "asterisk/event.h"
 
-/*! @{ */
-
 /*!
  * \brief Metadata about a \ref stasis_message.
  * \since 12
@@ -451,10 +449,6 @@ struct ast_manager_event_blob *stasis_message_to_ami(
 struct ast_event *stasis_message_to_event(
 	struct stasis_message *message);
 
-/*! @} */
-
-/*! @{ */
-
 /*!
  * \brief A topic to which messages may be posted, and subscribers, well, subscribe
  * \since 12
@@ -508,10 +502,6 @@ void stasis_publish(struct stasis_topic *topic, struct stasis_message *message);
  */
 void stasis_publish_sync(struct stasis_subscription *sub, struct stasis_message *message);
 
-/*! @} */
-
-/*! @{ */
-
 /*!
  * \brief Callback function type for Stasis subscriptions.
  * \param data Data field provided with subscription.
@@ -699,8 +689,6 @@ struct stasis_message_type *stasis_subscription_change_type(void);
 
 /*! @} */
 
-/*! @{ */
-
 /*!
  * \brief Pool for topic aggregation
  */
@@ -723,8 +711,6 @@ struct stasis_topic_pool *stasis_topic_pool_create(struct stasis_topic *pooled_t
  */
 struct stasis_topic *stasis_topic_pool_get_topic(struct stasis_topic_pool *pool, const char *topic_name);
 
-/*! @} */
-
 /*! \addtogroup StasisTopicsAndMessages
  * @{
  */
@@ -757,8 +743,6 @@ struct stasis_message_type *stasis_cache_clear_type(void);
 
 /*! @} */
 
-/*! @{ */
-
 /*!
  * \brief A message cache, for use with \ref stasis_caching_topic.
  * \since 12
@@ -1090,6 +1074,10 @@ struct ao2_container *stasis_cache_dump_by_eid(struct stasis_cache *cache, struc
  */
 struct ao2_container *stasis_cache_dump_all(struct stasis_cache *cache, struct stasis_message_type *type);
 
+/*! \addtogroup StasisTopicsAndMessages
+ * @{
+ */
+
 /*!
  * \brief Object type code for multi user object snapshots
  */
@@ -1163,8 +1151,6 @@ void ast_multi_object_blob_single_channel_publish(struct ast_channel *chan, stru
 
 /*! @} */
 
-/*! @{ */
-
 /*!
  * \internal
  * \brief Log a message about invalid attempt to access a type.
@@ -1267,10 +1253,6 @@ void stasis_log_bad_type_access(const char *name);
 		_priv_ ## name = NULL;		\
 	})
 
-/*! @} */
-
-/*! @{ */
-
 /*!
  * \brief Initialize the Stasis subsystem.
  * \return 0 on success.
@@ -1279,10 +1261,6 @@ void stasis_log_bad_type_access(const char *name);
  */
 int stasis_init(void);
 
-/*! @} */
-
-/*! @{ */
-
 /*!
  * \internal
  * \brief called by stasis_init() for cache initialization.
@@ -1301,12 +1279,10 @@ int stasis_cache_init(void);
  */
 int stasis_config_init(void);
 
-/*! @} */
-
 /*!
  * \defgroup StasisTopicsAndMessages Stasis topics, and their messages.
  *
- * This group contains the topics, messages and corresponding message types
+ * \brief This group contains the topics, messages and corresponding message types
  * found within Asterisk.
  */
 
diff --git a/include/asterisk/stasis_test.h b/include/asterisk/stasis_test.h
index ad4020a08..d9df1c97f 100644
--- a/include/asterisk/stasis_test.h
+++ b/include/asterisk/stasis_test.h
@@ -20,7 +20,8 @@
 #define _ASTERISK_STASIS_TEST_H
 
 /*!
- * \file \brief Test infrastructure for dealing with Stasis.
+ * \file
+ * \brief Test infrastructure for dealing with Stasis.
  *
  * \author David M. Lee, II <dlee@digium.com>
  *