diff --git a/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspconnection.c b/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspconnection.c
index 1dfeed1c23..610b3dc530 100644
--- a/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspconnection.c
+++ b/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspconnection.c
@@ -453,7 +453,7 @@ collect_addresses (GSocket * socket, gchar ** ip, guint16 * port,
  * @ip: the IP address of the other end
  * @port: the port used by the other end
  * @initial_buffer: data already read from @fd
- * @conn: (out) (transfer full): storage for a #GstRTSPConnection
+ * @conn: (out) (transfer full) (nullable): storage for a #GstRTSPConnection
  *
  * Create a new #GstRTSPConnection for handling communication on the existing
  * socket @socket. The @initial_buffer contains zero terminated data already
@@ -478,6 +478,8 @@ gst_rtsp_connection_create_from_socket (GSocket * socket, const gchar * ip,
   g_return_val_if_fail (ip != NULL, GST_RTSP_EINVAL);
   g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
 
+  *conn = NULL;
+
   if (!collect_addresses (socket, &local_ip, NULL, FALSE, &err))
     goto getnameinfo_failed;
 
@@ -531,7 +533,7 @@ newconn_failed:
 /**
  * gst_rtsp_connection_accept:
  * @socket: a socket
- * @conn: (out) (transfer full): storage for a #GstRTSPConnection
+ * @conn: (out) (transfer full) (nullable): storage for a #GstRTSPConnection
  * @cancellable: a #GCancellable to cancel the operation
  *
  * Accept a new connection on @socket and create a new #GstRTSPConnection for
@@ -552,6 +554,8 @@ gst_rtsp_connection_accept (GSocket * socket, GstRTSPConnection ** conn,
   g_return_val_if_fail (G_IS_SOCKET (socket), GST_RTSP_EINVAL);
   g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
 
+  *conn = NULL;
+
   client_sock = g_socket_accept (socket, cancellable, &err);
   if (!client_sock)
     goto accept_failed;
@@ -593,7 +597,7 @@ getnameinfo_failed:
 /**
  * gst_rtsp_connection_get_tls:
  * @conn: a #GstRTSPConnection
- * @error: #GError for error reporting, or NULL to ignore.
+ * @error: (optional): #GError for error reporting, or NULL to ignore.
  *
  * Get the TLS connection of @conn.
  *
@@ -707,7 +711,7 @@ gst_rtsp_connection_get_tls_validation_flags (GstRTSPConnection * conn)
 /**
  * gst_rtsp_connection_set_tls_database:
  * @conn: a #GstRTSPConnection
- * @database: a #GTlsDatabase
+ * @database: (nullable): a #GTlsDatabase
  *
  * Sets the anchor certificate authorities database. This certificate
  * database will be used to verify the server's certificate in case it
@@ -741,7 +745,7 @@ gst_rtsp_connection_set_tls_database (GstRTSPConnection * conn,
  * after a server certificate can't be verified with the default
  * certificate database.
  *
- * Returns: (transfer full): the anchor certificate authorities database, or NULL if no
+ * Returns: (transfer full) (nullable): the anchor certificate authorities database, or NULL if no
  * database has been previously set. Use g_object_unref() to release the
  * certificate database.
  *
@@ -763,7 +767,7 @@ gst_rtsp_connection_get_tls_database (GstRTSPConnection * conn)
 /**
  * gst_rtsp_connection_set_tls_interaction:
  * @conn: a #GstRTSPConnection
- * @interaction: a #GTlsInteraction
+ * @interaction: (nullable): a #GTlsInteraction
  *
  * Sets a #GTlsInteraction object to be used when the connection or certificate
  * database need to interact with the user. This will be used to prompt the
@@ -797,7 +801,7 @@ gst_rtsp_connection_set_tls_interaction (GstRTSPConnection * conn,
  * database need to interact with the user. This will be used to prompt the
  * user for passwords where necessary.
  *
- * Returns: (transfer full): a reference on the #GTlsInteraction. Use
+ * Returns: (transfer full) (nullable): a reference on the #GTlsInteraction. Use
  * g_object_unref() to release.
  *
  * Since: 1.6
@@ -1743,7 +1747,7 @@ clear_write_socket_timeout (GstRTSPConnection * conn)
 /**
  * gst_rtsp_connection_write_usec:
  * @conn: a #GstRTSPConnection
- * @data: the data to write
+ * @data: (array length=size): the data to write
  * @size: the size of @data
  * @timeout: a timeout value or 0
  *
@@ -2722,7 +2726,7 @@ invalid_format:
 /**
  * gst_rtsp_connection_read_usec:
  * @conn: a #GstRTSPConnection
- * @data: the data to read
+ * @data: (array length=size): the data to read
  * @size: the size of @data
  * @timeout: a timeout value in microseconds
  *
@@ -2803,7 +2807,7 @@ no_message:
 /**
  * gst_rtsp_connection_receive_usec:
  * @conn: a #GstRTSPConnection
- * @message: the message to read
+ * @message: (out caller-allocates): the message to read
  * @timeout: a timeout value or 0
  *
  * Attempt to read into @message from the connected @conn, blocking up to
@@ -2991,7 +2995,7 @@ gst_rtsp_connection_free (GstRTSPConnection * conn)
  * gst_rtsp_connection_poll_usec:
  * @conn: a #GstRTSPConnection
  * @events: a bitmask of #GstRTSPEvent flags to check
- * @revents: location for result flags
+ * @revents: (out caller-allocates): location for result flags
  * @timeout: a timeout in microseconds
  *
  * Wait up to the specified @timeout for the connection to become available for
@@ -3484,7 +3488,7 @@ gst_rtsp_connection_set_ip (GstRTSPConnection * conn, const gchar * ip)
  *
  * Get the file descriptor for reading.
  *
- * Returns: (transfer none): the file descriptor used for reading or %NULL on
+ * Returns: (transfer none) (nullable): the file descriptor used for reading or %NULL on
  * error. The file descriptor remains valid until the connection is closed.
  */
 GSocket *
@@ -3502,7 +3506,7 @@ gst_rtsp_connection_get_read_socket (const GstRTSPConnection * conn)
  *
  * Get the file descriptor for writing.
  *
- * Returns: (transfer none): the file descriptor used for writing or NULL on
+ * Returns: (transfer none) (nullable): the file descriptor used for writing or NULL on
  * error. The file descriptor remains valid until the connection is closed.
  */
 GSocket *
@@ -3571,7 +3575,7 @@ gst_rtsp_connection_is_tunneled (const GstRTSPConnection * conn)
  *
  * Get the tunnel session id the connection.
  *
- * Returns: returns a non-empty string if @conn is being tunneled over HTTP.
+ * Returns: (nullable): returns a non-empty string if @conn is being tunneled over HTTP.
  */
 const gchar *
 gst_rtsp_connection_get_tunnelid (const GstRTSPConnection * conn)
@@ -3626,7 +3630,7 @@ gst_rtsp_connection_get_ignore_x_server_reply (const GstRTSPConnection * conn)
 /**
  * gst_rtsp_connection_do_tunnel:
  * @conn: a #GstRTSPConnection
- * @conn2: a #GstRTSPConnection or %NULL
+ * @conn2: (nullable): a #GstRTSPConnection or %NULL
  *
  * If @conn received the first tunnel connection and @conn2 received
  * the second tunnel connection, link the two connections together so that
@@ -4371,7 +4375,7 @@ static GSourceFuncs gst_rtsp_source_funcs = {
  *
  * @conn must exist for the entire lifetime of the watch.
  *
- * Returns: a #GstRTSPWatch that can be used for asynchronous RTSP
+ * Returns: (transfer full): a #GstRTSPWatch that can be used for asynchronous RTSP
  * communication. Free with gst_rtsp_watch_unref () after usage.
  */
 GstRTSPWatch *
@@ -4466,7 +4470,7 @@ gst_rtsp_watch_reset (GstRTSPWatch * watch)
 /**
  * gst_rtsp_watch_attach:
  * @watch: a #GstRTSPWatch
- * @context: a GMainContext (if NULL, the default context will be used)
+ * @context: (nullable): a GMainContext (if NULL, the default context will be used)
  *
  * Adds a #GstRTSPWatch to a context so that it will be executed within that context.
  *
@@ -4798,7 +4802,7 @@ too_much_backlog:
  * @watch: a #GstRTSPWatch
  * @data: (array length=size) (transfer full): the data to queue
  * @size: the size of @data
- * @id: (out) (allow-none): location for a message ID or %NULL
+ * @id: (out) (optional): location for a message ID or %NULL
  *
  * Write @data using the connection of the @watch. If it cannot be sent
  * immediately, it will be queued for transmission in @watch. The contents of
@@ -4835,7 +4839,7 @@ gst_rtsp_watch_write_data (GstRTSPWatch * watch, const guint8 * data,
  * gst_rtsp_watch_send_message:
  * @watch: a #GstRTSPWatch
  * @message: a #GstRTSPMessage
- * @id: (out) (allow-none): location for a message ID or %NULL
+ * @id: (out) (optional): location for a message ID or %NULL
  *
  * Send a @message using the connection of the @watch. If it cannot be sent
  * immediately, it will be queued for transmission in @watch. The contents of
@@ -4861,7 +4865,7 @@ gst_rtsp_watch_send_message (GstRTSPWatch * watch, GstRTSPMessage * message,
  * @watch: a #GstRTSPWatch
  * @messages: (array length=n_messages): the messages to send
  * @n_messages: the number of messages to send
- * @id: (out) (allow-none): location for a message ID or %NULL
+ * @id: (out) (optional): location for a message ID or %NULL
  *
  * Sends @messages using the connection of the @watch. If they cannot be sent
  * immediately, they will be queued for transmission in @watch. The contents of
@@ -5056,7 +5060,7 @@ gst_rtsp_connection_connect_with_response (GstRTSPConnection * conn,
 /**
  * gst_rtsp_connection_read:
  * @conn: a #GstRTSPConnection
- * @data: the data to read
+ * @data: (array length=size): the data to read
  * @size: the size of @data
  * @timeout: a timeout value or %NULL
  *
@@ -5080,7 +5084,7 @@ gst_rtsp_connection_read (GstRTSPConnection * conn, guint8 * data, guint size,
 /**
  * gst_rtsp_connection_write:
  * @conn: a #GstRTSPConnection
- * @data: the data to write
+ * @data: (array length=size): the data to write
  * @size: the size of @data
  * @timeout: a timeout value or %NULL
  *
@@ -5154,7 +5158,7 @@ gst_rtsp_connection_send_messages (GstRTSPConnection * conn,
 /**
  * gst_rtsp_connection_receive:
  * @conn: a #GstRTSPConnection
- * @message: the message to read
+ * @message: (out caller-allocates): the message to read
  * @timeout: a timeout value or %NULL
  *
  * Attempt to read into @message from the connected @conn, blocking up to
@@ -5178,7 +5182,7 @@ gst_rtsp_connection_receive (GstRTSPConnection * conn, GstRTSPMessage * message,
  * gst_rtsp_connection_poll:
  * @conn: a #GstRTSPConnection
  * @events: a bitmask of #GstRTSPEvent flags to check
- * @revents: location for result flags
+ * @revents: (out): location for result flags
  * @timeout: a timeout
  *
  * Wait up to the specified @timeout for the connection to become available for
diff --git a/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspdefs.c b/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspdefs.c
index 0066a22ba2..1a85e6132c 100644
--- a/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspdefs.c
+++ b/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspdefs.c
@@ -313,7 +313,7 @@ gst_rtsp_strresult (GstRTSPResult result)
  *
  * Convert @method to a string.
  *
- * Returns: a string representation of @method.
+ * Returns: (nullable): a string representation of @method.
  */
 const gchar *
 gst_rtsp_method_as_text (GstRTSPMethod method)
@@ -364,7 +364,7 @@ gst_rtsp_version_as_text (GstRTSPVersion version)
  *
  * Convert @field to a string.
  *
- * Returns: a string representation of @field.
+ * Returns: (nullable): a string representation of @field.
  */
 const gchar *
 gst_rtsp_header_as_text (GstRTSPHeaderField field)
@@ -602,7 +602,7 @@ done:
 
 /**
  * gst_rtsp_generate_digest_auth_response:
- * @algorithm: (allow-none): Hash algorithm to use, or %NULL for MD5
+ * @algorithm: (nullable): Hash algorithm to use, or %NULL for MD5
  * @method: Request method, e.g. PLAY
  * @realm: Realm
  * @username: Username
@@ -615,7 +615,7 @@ done:
  *
  * Currently only supported algorithm "md5".
  *
- * Returns: Authentication response or %NULL if unsupported
+ * Returns: (nullable): Authentication response or %NULL if unsupported
  *
  * Since: 1.12
  */
@@ -643,7 +643,7 @@ gst_rtsp_generate_digest_auth_response (const gchar * algorithm,
 
 /**
  * gst_rtsp_generate_digest_auth_response_from_md5:
- * @algorithm: (allow-none): Hash algorithm to use, or %NULL for MD5
+ * @algorithm: (nullable): Hash algorithm to use, or %NULL for MD5
  * @method: Request method, e.g. PLAY
  * @md5: The md5 sum of username:realm:password
  * @uri: Original request URI
@@ -657,7 +657,7 @@ gst_rtsp_generate_digest_auth_response (const gchar * algorithm,
  *
  * Currently only supported algorithm "md5".
  *
- * Returns: Authentication response or %NULL if unsupported
+ * Returns: (nullable): Authentication response or %NULL if unsupported
  *
  * Since: 1.16
  */
diff --git a/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspmessage.c b/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspmessage.c
index dea5421206..818f58019e 100644
--- a/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspmessage.c
+++ b/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspmessage.c
@@ -136,7 +136,7 @@ gst_rtsp_message_new (GstRTSPMessage ** msg)
 
 /**
  * gst_rtsp_message_init:
- * @msg: a #GstRTSPMessage
+ * @msg: (out caller-allocates): a #GstRTSPMessage
  *
  * Initialize @msg. This function is mostly used when @msg is allocated on the
  * stack. The reverse operation of this is gst_rtsp_message_unset().
@@ -201,7 +201,7 @@ gst_rtsp_message_new_request (GstRTSPMessage ** msg, GstRTSPMethod method,
 
 /**
  * gst_rtsp_message_init_request:
- * @msg: a #GstRTSPMessage
+ * @msg: (out caller-allocates): a #GstRTSPMessage
  * @method: the request method to use
  * @uri: (transfer none): the uri of the request
  *
@@ -231,9 +231,9 @@ gst_rtsp_message_init_request (GstRTSPMessage * msg, GstRTSPMethod method,
 /**
  * gst_rtsp_message_parse_request:
  * @msg: a #GstRTSPMessage
- * @method: (out) (allow-none): location to hold the method
- * @uri: (out) (allow-none) (transfer none): location to hold the uri
- * @version: (out) (allow-none) (transfer none): location to hold the version
+ * @method: (out) (optional): location to hold the method
+ * @uri: (out) (optional) (transfer none): location to hold the uri
+ * @version: (out) (optional) (transfer none): location to hold the version
  *
  * Parse the request message @msg and store the values @method, @uri and
  * @version. The result locations can be %NULL if one is not interested in its
@@ -265,8 +265,8 @@ gst_rtsp_message_parse_request (GstRTSPMessage * msg,
  * gst_rtsp_message_new_response:
  * @msg: (out) (transfer full): a location for the new #GstRTSPMessage
  * @code: the status code
- * @reason: (transfer none) (allow-none): the status reason or %NULL
- * @request: (transfer none) (allow-none): the request that triggered the response or %NULL
+ * @reason: (transfer none) (optional): the status reason or %NULL
+ * @request: (transfer none) (optional): the request that triggered the response or %NULL
  *
  * Create a new response #GstRTSPMessage with @code and @reason and store the
  * result message in @msg. Free with gst_rtsp_message_free().
@@ -295,10 +295,10 @@ gst_rtsp_message_new_response (GstRTSPMessage ** msg, GstRTSPStatusCode code,
 
 /**
  * gst_rtsp_message_init_response:
- * @msg: a #GstRTSPMessage
+ * @msg: (out caller-allocates): a #GstRTSPMessage
  * @code: the status code
- * @reason: (transfer none) (allow-none): the status reason or %NULL
- * @request: (transfer none) (allow-none): the request that triggered the response or %NULL
+ * @reason: (transfer none) (optional): the status reason or %NULL
+ * @request: (transfer none) (optional): the request that triggered the response or %NULL
  *
  * Initialize @msg with @code and @reason.
  *
@@ -365,9 +365,9 @@ gst_rtsp_message_init_response (GstRTSPMessage * msg, GstRTSPStatusCode code,
 /**
  * gst_rtsp_message_parse_response:
  * @msg: a #GstRTSPMessage
- * @code: (out) (allow-none): location to hold the status code
- * @reason: (out) (allow-none) (transfer none): location to hold the status reason
- * @version: (out) (allow-none) (transfer none): location to hold the version
+ * @code: (out) (optional): location to hold the status code
+ * @reason: (out) (optional) (transfer none): location to hold the status reason
+ * @version: (out) (optional) (transfer none): location to hold the version
  *
  * Parse the response message @msg and store the values @code, @reason and
  * @version. The result locations can be %NULL if one is not interested in its
@@ -421,7 +421,7 @@ gst_rtsp_message_new_data (GstRTSPMessage ** msg, guint8 channel)
 
 /**
  * gst_rtsp_message_init_data:
- * @msg: a #GstRTSPMessage
+ * @msg: (out caller-allocates): a #GstRTSPMessage
  * @channel: a channel
  *
  * Initialize a new data #GstRTSPMessage for @channel.
@@ -444,7 +444,7 @@ gst_rtsp_message_init_data (GstRTSPMessage * msg, guint8 channel)
 /**
  * gst_rtsp_message_parse_data:
  * @msg: a #GstRTSPMessage
- * @channel: (out): location to hold the channel
+ * @channel: (out) (optional): location to hold the channel
  *
  * Parse the data message @msg and store the channel in @channel.
  *
@@ -539,7 +539,7 @@ gst_rtsp_message_free (GstRTSPMessage * msg)
 /**
  * gst_rtsp_message_copy:
  * @msg: a #GstRTSPMessage
- * @copy: (out) (transfer full): pointer to new #GstRTSPMessage
+ * @copy: (out) (nullable) (transfer full): pointer to new #GstRTSPMessage
  *
  * Allocate a new copy of @msg and store the result in @copy. The value in
  * @copy should be release with gst_rtsp_message_free function.
@@ -554,6 +554,10 @@ gst_rtsp_message_copy (const GstRTSPMessage * msg, GstRTSPMessage ** copy)
   GstRTSPResult ret;
   GstRTSPMessage *cp;
 
+  g_return_val_if_fail (copy != NULL, GST_RTSP_EINVAL);
+
+  *copy = NULL;
+
   if (msg == NULL)
     return GST_RTSP_EINVAL;
 
@@ -684,7 +688,7 @@ gst_rtsp_message_remove_header (GstRTSPMessage * msg, GstRTSPHeaderField field,
  * gst_rtsp_message_get_header:
  * @msg: a #GstRTSPMessage
  * @field: a #GstRTSPHeaderField
- * @value: (out) (transfer none): pointer to hold the result
+ * @value: (out) (transfer none) (optional) (nullable): pointer to hold the result
  * @indx: the index of the header
  *
  * Get the @indx header value with key @field from @msg. The result in @value
@@ -702,6 +706,9 @@ gst_rtsp_message_get_header (const GstRTSPMessage * msg,
 
   g_return_val_if_fail (msg != NULL, GST_RTSP_EINVAL);
 
+  if (value)
+    *value = NULL;
+
   /* no header initialized, there are no headers */
   if (msg->hdr_fields == NULL)
     return GST_RTSP_ENOTIMPL;
@@ -858,7 +865,7 @@ gst_rtsp_message_remove_header_by_name (GstRTSPMessage * msg,
  * gst_rtsp_message_get_header_by_name:
  * @msg: a #GstRTSPMessage
  * @header: a #GstRTSPHeaderField
- * @value: (out) (transfer none): pointer to hold the result
+ * @value: (out) (transfer none) (optional) (nullable): pointer to hold the result
  * @index: the index of the header
  *
  * Get the @index header value with key @header from @msg. The result in @value
@@ -879,6 +886,9 @@ gst_rtsp_message_get_header_by_name (GstRTSPMessage * msg,
   g_return_val_if_fail (msg != NULL, GST_RTSP_EINVAL);
   g_return_val_if_fail (header != NULL, GST_RTSP_EINVAL);
 
+  if (value)
+    *value = NULL;
+
   pos = gst_rtsp_message_find_header_by_name (msg, header, index);
 
   if (pos < 0)
@@ -1445,7 +1455,7 @@ parse_auth_credentials (GPtrArray * auth_credentials, const gchar * header,
  *
  * Parses the credentials given in a WWW-Authenticate or Authorization header.
  *
- * Returns: (array zero-terminated=1):
+ * Returns: (transfer full) (array zero-terminated=1):
  *     %NULL-terminated array of GstRTSPAuthCredential or %NULL.
  *
  * Since: 1.12
diff --git a/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtsptransport.c b/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtsptransport.c
index 3a48e5c971..eac1dc26f5 100644
--- a/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtsptransport.c
+++ b/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtsptransport.c
@@ -145,7 +145,7 @@ G_STMT_START {                                    \
 
 /**
  * gst_rtsp_transport_new:
- * @transport: location to hold the new #GstRTSPTransport
+ * @transport: (out) (transfer full): location to hold the new #GstRTSPTransport
  *
  * Allocate a new initialized #GstRTSPTransport. Use gst_rtsp_transport_free()
  * after usage.
@@ -168,7 +168,7 @@ gst_rtsp_transport_new (GstRTSPTransport ** transport)
 
 /**
  * gst_rtsp_transport_init:
- * @transport: a #GstRTSPTransport
+ * @transport: (out caller-allocates): a #GstRTSPTransport
  *
  * Initialize @transport so that it can be used.
  *
@@ -205,7 +205,7 @@ gst_rtsp_transport_init (GstRTSPTransport * transport)
 /**
  * gst_rtsp_transport_get_mime:
  * @trans: a #GstRTSPTransMode
- * @mime: location to hold the result
+ * @mime: (out) (transfer none): location to hold the result
  *
  * Get the mime type of the transport mode @trans. This mime type is typically
  * used to generate #GstCaps events.
@@ -433,7 +433,7 @@ rtsp_transport_ltrans_as_text (const GstRTSPTransport * transport)
 /**
  * gst_rtsp_transport_parse:
  * @str: a transport string
- * @transport: a #GstRTSPTransport
+ * @transport: (out caller-allocates): a #GstRTSPTransport
  *
  * Parse the RTSP transport string @str into @transport.
  *
@@ -592,8 +592,8 @@ invalid_transport:
  * Convert @transport into a string that can be used to signal the transport in
  * an RTSP SETUP response.
  *
- * Returns: a string describing the RTSP transport or %NULL when the transport
- * is invalid.
+ * Returns: (transfer full) (nullable): a string describing the RTSP transport
+ * or %NULL when the transport is invalid.
  */
 gchar *
 gst_rtsp_transport_as_text (GstRTSPTransport * transport)
diff --git a/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspurl.c b/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspurl.c
index d03e464262..4b46de7375 100644
--- a/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspurl.c
+++ b/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspurl.c
@@ -90,7 +90,7 @@ static const struct
 /**
  * gst_rtsp_url_parse:
  * @urlstr: the url string to parse
- * @url: (out): location to hold the result.
+ * @url: (out) (transfer full) (nullable): location to hold the result.
  *
  * Parse the RTSP @urlstr into a newly allocated #GstRTSPUrl. Free after usage
  * with gst_rtsp_url_free().
@@ -108,6 +108,8 @@ gst_rtsp_url_parse (const gchar * urlstr, GstRTSPUrl ** url)
   g_return_val_if_fail (urlstr != NULL, GST_RTSP_EINVAL);
   g_return_val_if_fail (url != NULL, GST_RTSP_EINVAL);
 
+  *url = NULL;
+
   res = g_new0 (GstRTSPUrl, 1);
 
   p = (gchar *) urlstr;
@@ -222,7 +224,7 @@ invalid:
  *
  * Make a copy of @url.
  *
- * Returns: a copy of @url. Free with gst_rtsp_url_free () after usage.
+ * Returns: (transfer full): a copy of @url. Free with gst_rtsp_url_free () after usage.
  */
 GstRTSPUrl *
 gst_rtsp_url_copy (const GstRTSPUrl * url)
@@ -314,7 +316,7 @@ gst_rtsp_url_get_port (const GstRTSPUrl * url, guint16 * port)
  *
  * Get a newly allocated string describing the request URI for @url.
  *
- * Returns: a string with the request URI. g_free() after usage.
+ * Returns: (transfer full): a string with the request URI. g_free() after usage.
  */
 gchar *
 gst_rtsp_url_get_request_uri (const GstRTSPUrl * url)
@@ -350,7 +352,7 @@ gst_rtsp_url_get_request_uri (const GstRTSPUrl * url)
  * Get a newly allocated string describing the request URI for @url
  * combined with the control path for @control_path
  *
- * Returns: a string with the request URI combined with the control path.
+ * Returns: (transfer full): a string with the request URI combined with the control path.
  * g_free() after usage.
  *
  * Since: 1.18