gst: fix some GIR annotations

Mostly related to out parameters and their transfer

gst/gstbuffer.c

@@ -2267,7 +2267,7 @@ gst_buffer_remove_meta (GstBuffer * buffer, GstMeta * meta)
 /**
  * gst_buffer_iterate_meta: (skip)
  * @buffer: a #GstBuffer
- * @state: an opaque state pointer
+ * @state: (out caller-allocates): an opaque state pointer
  *
  * Retrieve the next #GstMeta after @current. If @state points
  * to %NULL, the first metadata is returned.
@@ -2302,7 +2302,7 @@ gst_buffer_iterate_meta (GstBuffer * buffer, gpointer * state)
 /**
  * gst_buffer_iterate_meta_filtered: (skip)
  * @buffer: a #GstBuffer
- * @state: an opaque state pointer
+ * @state: (out caller-allocates): an opaque state pointer
  * @meta_api_type: only return #GstMeta of this type
  *
  * Retrieve the next #GstMeta of type @meta_api_type after the current one

gst/gstevent.c

@@ -2015,7 +2015,7 @@ gst_event_new_protection (const gchar * system_id,
  * string uniquely identifying a content protection system.
  * @data: (out) (allow-none) (transfer none): pointer to store a #GstBuffer
  * holding protection system specific information.
- * @origin: (allow-none) (transfer none): pointer to store a value that
+ * @origin: (out) (allow-none) (transfer none): pointer to store a value that
  * indicates where the protection information carried by @event was extracted
  * from.
  *

gst/gstmemory.c

@@ -163,8 +163,8 @@ gst_memory_is_type (GstMemory * mem, const gchar * mem_type)
 /**
  * gst_memory_get_sizes:
  * @mem: a #GstMemory
- * @offset: pointer to offset
- * @maxsize: pointer to maxsize
+ * @offset: (out) (allow-none): pointer to offset
+ * @maxsize: (out) (allow-none): pointer to maxsize
  *
  * Get the current @size, @offset and @maxsize of @mem.
  *
@@ -426,7 +426,7 @@ gst_memory_share (GstMemory * mem, gssize offset, gssize size)
  * gst_memory_is_span:
  * @mem1: a #GstMemory
  * @mem2: a #GstMemory
- * @offset: a pointer to a result offset
+ * @offset: (out): a pointer to a result offset
  *
  * Check if @mem1 and mem2 share the memory with a common parent memory object
  * and that the memory is contiguous.

gst/gstmessage.c

@@ -462,7 +462,7 @@ gst_message_new_error (GstObject * src, GError * error, const gchar * debug)
 /**
  * gst_message_parse_error_details:
  * @message: The message object
- * @structure: (out): A pointer to the returned details
+ * @structure: (transfer none) (out): A pointer to the returned details
  *
  * Returns the optional details structure, may be NULL if none.
  * The returned structure must not be freed.
@@ -552,7 +552,7 @@ gst_message_new_warning (GstObject * src, GError * error, const gchar * debug)
 /**
  * gst_message_parse_warning_details:
  * @message: The message object
- * @structure: (out): A pointer to the returned details structure
+ * @structure: (transfer none) (out): A pointer to the returned details structure
  *
  * Returns the optional details structure, may be NULL if none
  * The returned structure must not be freed.
@@ -642,7 +642,7 @@ gst_message_new_info (GstObject * src, GError * error, const gchar * debug)
 /**
  * gst_message_parse_info_details:
  * @message: The message object
- * @structure: (out): A pointer to the returned details structure
+ * @structure: (transfer none) (out): A pointer to the returned details structure
  *
  * Returns the optional details structure, may be NULL if none
  * The returned structure must not be freed.
@@ -2504,7 +2504,7 @@ gst_message_new_need_context (GstObject * src, const gchar * context_type)
 /**
  * gst_message_parse_context_type:
  * @message: a GST_MESSAGE_NEED_CONTEXT type message
- * @context_type: (out) (allow-none): the context type, or %NULL
+ * @context_type: (out) (transfer none) (allow-none): the context type, or %NULL
  *
  * Parse a context type from an existing GST_MESSAGE_NEED_CONTEXT message.
  *
@@ -2721,11 +2721,12 @@ gst_message_new_property_notify (GstObject * src, const gchar * property_name,
  * @message: a #GstMessage of type %GST_MESSAGE_PROPERTY_NOTIFY
  * @object: (out) (allow-none) (transfer none): location where to store a
  *     pointer to the object whose property got changed, or %NULL
- * @property_name: (out) (allow-none): return location for the name of the
- *     property that got changed, or %NULL
- * @property_value: (out) (allow-none): return location for the new value of
- *     the property that got changed, or %NULL. This will only be set if the
- *     property notify watch was told to include the value when it was set up
+ * @property_name: (out) (transfer none) (allow-none): return location for
+ *     the name of the property that got changed, or %NULL
+ * @property_value: (out) (transfer none) (allow-none): return location for
+ *     the new value of the property that got changed, or %NULL. This will
+ *     only be set if the property notify watch was told to include the value
+ *     when it was set up
  *
  * Parses a property-notify message. These will be posted on the bus only
  * when set up with gst_element_add_property_notify_watch() or

gst/gstquery.c

@@ -993,7 +993,7 @@ gst_query_parse_n_formats (GstQuery * query, guint * n_formats)
 /**
  * gst_query_parse_nth_format:
  * @query: a #GstQuery
- * @nth: (out): the nth format to retrieve.
+ * @nth: the nth format to retrieve.
  * @format: (out) (allow-none): a pointer to store the nth format
  *
  * Parse the format query and retrieve the @nth format from it into
@@ -2389,7 +2389,7 @@ gst_query_set_accept_caps_result (GstQuery * query, gboolean result)
 /**
  * gst_query_parse_accept_caps_result:
  * @query: a GST_QUERY_ACCEPT_CAPS type query #GstQuery
- * @result: location for the result
+ * @result: (out) (allow-none): location for the result
  *
  * Parse the result from @query and store in @result.
  */

gst/gstsegment.c

@@ -1084,7 +1084,7 @@ gst_segment_position_from_running_time_full (const GstSegment * segment,
  * Returns: the position in the segment for @running_time. This function returns
  * -1 when @running_time is -1 or when it is not inside @segment.
  *
- * Deprecated. Use gst_segment_position_from_running_time() instead.
+ * Deprecated: Use gst_segment_position_from_running_time() instead.
  */
 #ifndef GST_REMOVE_DEPRECATED
 guint64

gst/gsttaglist.c

@@ -1639,6 +1639,18 @@ TAG_MERGE_FUNCS (int, gint, TRUE);
  *              given list.
  */
 TAG_MERGE_FUNCS (uint, guint, TRUE);
+/**
+ * gst_tag_list_get_int64:
+ * @list: a #GstTagList to get the tag from
+ * @tag: tag to read out
+ * @value: (out): location for the result
+ *
+ * Copies the contents for the given tag into the value, merging multiple values
+ * into one if multiple values are associated with the tag.
+ *
+ * Returns: %TRUE, if a value was copied, %FALSE if the tag didn't exist in the
+ *              given list.
+ */
 /**
  * gst_tag_list_get_int64_index:
  * @list: a #GstTagList to get the tag from

gst/gsturi.c

@@ -498,6 +498,8 @@ gst_uri_get_location (const gchar * uri)
  *
  * Returns: (transfer full): a new string for this URI. Returns %NULL if the
  *     given URI protocol is not valid, or the given location is %NULL.
+ *
+ * Deprecated: Use GstURI instead.
  */
 #ifndef GST_REMOVE_DEPRECATED
 gchar *