Add control properties to audiotestsrc

Add control properties to audiotestsrc for frequency and volume
and add a test program.
Add size parameter to set_io for additional checks and to make it
easy to know how much control data we can write.

src/examples/export-sink.c

@@ -217,12 +217,12 @@ static int impl_get_port_ids(struct spa_node *node,
 
 static int impl_port_set_io(struct spa_node *node,
 			    enum spa_direction direction, uint32_t port_id,
-			    uint32_t id, void *io)
+			    uint32_t id, void *data, size_t size)
 {
 	struct data *d = SPA_CONTAINER_OF(node, struct data, impl_node);
 
 	if (id == d->t->io.Buffers)
-		d->io = io;
+		d->io = data;
 	else
 		return -ENOENT;
 

src/examples/export-source.c

@@ -132,12 +132,12 @@ static int impl_get_port_ids(struct spa_node *node,
 }
 
 static int impl_port_set_io(struct spa_node *node, enum spa_direction direction, uint32_t port_id,
-			    uint32_t id, void *io)
+			    uint32_t id, void *data, size_t size)
 {
 	struct data *d = SPA_CONTAINER_OF(node, struct data, impl_node);
 
 	if (id == d->t->io.Buffers)
-		d->io = io;
+		d->io = data;
 	else
 		return -ENOENT;
 

src/examples/local-v4l2.c

@@ -211,12 +211,12 @@ static int impl_get_port_ids(struct spa_node *node,
 }
 
 static int impl_port_set_io(struct spa_node *node, enum spa_direction direction, uint32_t port_id,
-			    uint32_t id, void *io)
+			    uint32_t id, void *data, size_t size)
 {
 	struct data *d = SPA_CONTAINER_OF(node, struct data, impl_node);
 
 	if (id == d->t->io.Buffers)
-		d->io = io;
+		d->io = data;
 	else
 		return -ENOENT;
 

src/modules/module-client-node/client-node.c

@@ -514,7 +514,7 @@ spa_proxy_node_port_set_io(struct spa_node *node,
 			   enum spa_direction direction,
 			   uint32_t port_id,
 			   uint32_t id,
-			   void *io)
+			   void *data, size_t size)
 {
 	struct proxy *this;
 	struct proxy_port *port;
@@ -532,7 +532,7 @@ spa_proxy_node_port_set_io(struct spa_node *node,
 	port = GET_PORT(this, direction, port_id);
 
 	if (id == t->io.Buffers)
-		port->io = io;
+		port->io = data;
 	else
 		return -ENOENT;
 

src/modules/module-jack/jack-node.c

@@ -374,14 +374,14 @@ static int node_process_output(struct spa_node *node)
 
 static int port_set_io(struct spa_node *node,
 		       enum spa_direction direction, uint32_t port_id,
-		       uint32_t id, void *io)
+		       uint32_t id, void *data, size_t size)
 {
 	struct node_data *nd = SPA_CONTAINER_OF(node, struct node_data, node_impl);
 	struct port_data *pd = nd->port_data[direction][port_id];
 	struct type *t = &pd->node->type;
 
 	if (id == t->io.Buffers)
-		pd->io = io;
+		pd->io = data;
 	else
 		return -ENOENT;
 

src/pipewire/port.c

@@ -289,7 +289,8 @@ bool pw_port_add(struct pw_port *port, struct pw_node *node)
 
 	spa_node_port_set_io(node->node,
 			     port->direction, port_id,
-			     node->core->type.io.Buffers, port->rt.port.io);
+			     node->core->type.io.Buffers,
+			     port->rt.port.io, sizeof(*port->rt.port.io));
 
 	port->rt.graph = node->rt.graph;
 	pw_loop_invoke(node->data_loop, do_add_port, SPA_ID_INVALID, NULL, 0, false, port);