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pipewire/pinos/client/client-node.c
Wim Taymans 4a5ed1e1f5 Rework how clients connect. 
Add buffer flags. The idea is to make it possible to easily check when a
buffer contains control information that we need to parse to update the
port fields.
Make the client create remote nodes and ports and set up proxies for
them.
Make a port base class implementing most of the logic to pass buffers
locally and remotely.
Remove most code from stream.c, it's now in the port.
Make a portsink and portsrc that can write and read to/from any port. We
use these in the server to send and receive data.
Rework format negotiation. The final format is now sent in-line before
the data. The server will select a format on output ports.
2016-05-17 09:38:30 +02:00

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/* Pinos
* Copyright (C) 2015 Wim Taymans <wim.taymans@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <gio/gio.h>
#include <gio/gunixfdlist.h>
#include "pinos/client/pinos.h"
#include "pinos/client/subscribe.h"
#include "pinos/client/enumtypes.h"
#include "pinos/client/context.h"
#include "pinos/client/private.h"
#include "pinos/client/client-node.h"
#include "pinos/client/client-port.h"
#define PINOS_CLIENT_NODE_GET_PRIVATE(node) \
(G_TYPE_INSTANCE_GET_PRIVATE ((node), PINOS_TYPE_CLIENT_NODE, PinosClientNodePrivate))
struct _PinosClientNodePrivate
{
PinosContext *context;
GDBusProxy *proxy;
};
G_DEFINE_TYPE (PinosClientNode, pinos_client_node, PINOS_TYPE_NODE);
enum
{
PROP_0,
PROP_CONTEXT,
PROP_PROXY,
};
static gboolean
client_node_set_state (PinosNode *node,
PinosNodeState state)
{
return FALSE;
}
typedef struct {
PinosDirection direction;
gchar *name;
PinosProperties *properties;
GBytes *possible_formats;
GSocket *socket;
} CreatePortData;
static void
create_port_data_free (CreatePortData *data)
{
g_free (data->name);
if (data->properties)
pinos_properties_free (data->properties);
g_clear_object (&data->socket);
g_slice_free (CreatePortData, data);
}
static void
on_port_proxy (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
GTask *task = user_data;
CreatePortData *data = g_task_get_task_data (task);
PinosClientNode *node = g_task_get_source_object (task);
PinosClientNodePrivate *priv = node->priv;
PinosContext *context = priv->context;
GError *error = NULL;
GDBusProxy *proxy;
PinosClientPort *port;
proxy = pinos_subscribe_get_proxy_finish (context->priv->subscribe,
res,
&error);
if (proxy == NULL)
goto port_failed;
port = pinos_client_port_new (node,
proxy,
data->socket);
g_task_return_pointer (task, port, (GDestroyNotify) g_object_unref);
g_object_unref (task);
return;
port_failed:
{
g_warning ("failed to get port proxy: %s", error->message);
g_task_return_error (task, error);
g_object_unref (task);
return;
}
}
static void
on_port_created (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
GTask *task = user_data;
PinosClientNode *node = g_task_get_source_object (task);
CreatePortData *data = g_task_get_task_data (task);
PinosClientNodePrivate *priv = node->priv;
PinosContext *context = priv->context;
GVariant *ret;
GError *error = NULL;
const gchar *port_path;
GUnixFDList *fdlist;
gint fd, fd_idx;
g_assert (priv->proxy == G_DBUS_PROXY (source_object));
ret = g_dbus_proxy_call_with_unix_fd_list_finish (priv->proxy, &fdlist, res, &error);
if (ret == NULL)
goto create_failed;
g_variant_get (ret, "(&oh)", &port_path, &fd_idx);
fd = g_unix_fd_list_get (fdlist, fd_idx, &error);
g_object_unref (fdlist);
if (fd == -1)
goto create_failed;
data->socket = g_socket_new_from_fd (fd, &error);
if (data->socket == NULL)
goto create_failed;
pinos_subscribe_get_proxy (context->priv->subscribe,
PINOS_DBUS_SERVICE,
port_path,
"org.pinos.Port1",
NULL,
on_port_proxy,
task);
g_variant_unref (ret);
return;
/* ERRORS */
create_failed:
{
g_warning ("failed to create port: %s", error->message);
g_task_return_error (task, error);
g_object_unref (task);
return;
}
}
static gboolean
do_create_port (GTask *task)
{
PinosClientNode *node = g_task_get_source_object (task);
PinosClientNodePrivate *priv = node->priv;
CreatePortData *data = g_task_get_task_data (task);
g_dbus_proxy_call (priv->proxy,
"CreatePort",
g_variant_new ("(us@a{sv}s)",
data->direction,
data->name,
pinos_properties_to_variant (data->properties),
g_bytes_get_data (data->possible_formats, NULL)),
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL, /* GCancellable *cancellable */
on_port_created,
task);
return FALSE;
}
static void
client_node_create_port (PinosNode *node,
PinosDirection direction,
const gchar *name,
GBytes *possible_formats,
PinosProperties *properties,
GTask *task)
{
PinosClientNodePrivate *priv = PINOS_CLIENT_NODE (node)->priv;
PinosContext *context = priv->context;
CreatePortData *data;
data = g_slice_new (CreatePortData);
data->direction = direction;
data->name = g_strdup (name);
data->possible_formats = possible_formats ? g_bytes_ref (possible_formats) : NULL;
data->properties = properties ? pinos_properties_copy (properties) : NULL;
g_task_set_task_data (task, data, (GDestroyNotify) create_port_data_free);
g_main_context_invoke (context->priv->context,
(GSourceFunc) do_create_port,
task);
}
static void
client_node_remove_port (PinosNode *node,
PinosPort *port)
{
}
static void
pinos_client_node_get_property (GObject *_object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
PinosClientNode *node = PINOS_CLIENT_NODE (_object);
PinosClientNodePrivate *priv = node->priv;
switch (prop_id) {
case PROP_CONTEXT:
g_value_set_object (value, priv->context);
break;
case PROP_PROXY:
g_value_set_object (value, priv->proxy);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (node, prop_id, pspec);
break;
}
}
static void
pinos_client_node_set_property (GObject *_object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
PinosClientNode *node = PINOS_CLIENT_NODE (_object);
PinosClientNodePrivate *priv = node->priv;
switch (prop_id) {
case PROP_CONTEXT:
priv->context = g_value_dup_object (value);
break;
case PROP_PROXY:
priv->proxy = g_value_dup_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (node, prop_id, pspec);
break;
}
}
static void
pinos_client_node_constructed (GObject * obj)
{
PinosClientNode *node = PINOS_CLIENT_NODE (obj);
g_debug ("client-node %p: constructed", node);
G_OBJECT_CLASS (pinos_client_node_parent_class)->constructed (obj);
}
static void
pinos_client_node_dispose (GObject * obj)
{
PinosClientNode *node = PINOS_CLIENT_NODE (obj);
g_debug ("client-node %p: dispose", node);
G_OBJECT_CLASS (pinos_client_node_parent_class)->dispose (obj);
}
static void
pinos_client_node_finalize (GObject * obj)
{
PinosClientNode *node = PINOS_CLIENT_NODE (obj);
PinosClientNodePrivate *priv = node->priv;
g_debug ("client-node %p: finalize", node);
g_clear_object (&priv->context);
g_clear_object (&priv->proxy);
G_OBJECT_CLASS (pinos_client_node_parent_class)->finalize (obj);
}
static void
pinos_client_node_class_init (PinosClientNodeClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
PinosNodeClass *node_class = PINOS_NODE_CLASS (klass);
g_type_class_add_private (klass, sizeof (PinosClientNodePrivate));
gobject_class->constructed = pinos_client_node_constructed;
gobject_class->dispose = pinos_client_node_dispose;
gobject_class->finalize = pinos_client_node_finalize;
gobject_class->set_property = pinos_client_node_set_property;
gobject_class->get_property = pinos_client_node_get_property;
g_object_class_install_property (gobject_class,
PROP_CONTEXT,
g_param_spec_object ("context",
"Context",
"The Context",
PINOS_TYPE_CONTEXT,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_PROXY,
g_param_spec_object ("proxy",
"Proxy",
"The Proxy",
G_TYPE_DBUS_PROXY,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
node_class->set_state = client_node_set_state;
node_class->create_port = client_node_create_port;
node_class->remove_port = client_node_remove_port;
}
static void
pinos_client_node_init (PinosClientNode * node)
{
node->priv = PINOS_CLIENT_NODE_GET_PRIVATE (node);
g_debug ("client-node %p: new", node);
}
/**
* pinos_client_node_get_context:
* @node: a #PinosClientNode
*
* Get the context of @node.
*
* Returns: the context of @node.
*/
PinosContext *
pinos_client_node_get_context (PinosClientNode *node)
{
PinosClientNodePrivate *priv;
g_return_val_if_fail (PINOS_IS_CLIENT_NODE (node), NULL);
priv = node->priv;
return priv->context;
}
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