pipewire/src/server/pv-source-output.c

274 lines
8.2 KiB
C

/* Pulsevideo
* 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 <sys/socket.h>
#include <gio/gunixfdlist.h>
#include "server/pv-daemon.h"
#include "server/pv-source-output.h"
#include "client/pv-enumtypes.h"
#include "dbus/org-pulsevideo.h"
struct _PvSourceOutputPrivate
{
PvDaemon *daemon;
gchar *object_path;
GSocket *socket;
};
#define PV_SOURCE_OUTPUT_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), PV_TYPE_SOURCE_OUTPUT, PvSourceOutputPrivate))
G_DEFINE_TYPE (PvSourceOutput, pv_source_output, G_TYPE_OBJECT);
enum
{
PROP_0,
PROP_DAEMON,
PROP_OBJECT_PATH,
PROP_SOCKET,
};
static void
pv_source_output_get_property (GObject *_object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
PvSourceOutput *output = PV_SOURCE_OUTPUT (_object);
PvSourceOutputPrivate *priv = output->priv;
switch (prop_id) {
case PROP_DAEMON:
g_value_set_object (value, priv->daemon);
break;
case PROP_OBJECT_PATH:
g_value_set_string (value, priv->object_path);
break;
case PROP_SOCKET:
g_value_set_object (value, priv->socket);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (output, prop_id, pspec);
break;
}
}
static void
pv_source_output_set_property (GObject *_object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
PvSourceOutput *output = PV_SOURCE_OUTPUT (_object);
PvSourceOutputPrivate *priv = output->priv;
switch (prop_id) {
case PROP_DAEMON:
priv->daemon = g_value_dup_object (value);
break;
case PROP_OBJECT_PATH:
priv->object_path = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (output, prop_id, pspec);
break;
}
}
static gboolean
handle_acquire (PvSourceOutput1 *interface,
GDBusMethodInvocation *invocation,
GVariant *arg_properties,
gpointer user_data)
{
PvSourceOutput *output = user_data;
PvSourceOutputPrivate *priv = output->priv;
GUnixFDList *fdlist;
GVariantBuilder props;
gint fd[2];
g_variant_builder_init (&props, G_VARIANT_TYPE ("a{sv}"));
g_variant_builder_add (&props, "{sv}", "name", g_variant_new_string ("hello"));
socketpair (AF_UNIX, SOCK_STREAM, 0, fd);
priv->socket = g_socket_new_from_fd (fd[0], NULL);
g_object_notify (G_OBJECT (output), "socket");
fdlist = g_unix_fd_list_new ();
g_unix_fd_list_append (fdlist, fd[1], NULL);
g_dbus_method_invocation_return_value_with_unix_fd_list (invocation,
g_variant_new ("(h@a{sv})", 0, g_variant_builder_end (&props)),
fdlist);
return TRUE;
}
static void
stop_transfer (PvSourceOutput *output)
{
PvSourceOutputPrivate *priv = output->priv;
if (priv->socket) {
g_clear_object (&priv->socket);
g_object_notify (G_OBJECT (output), "socket");
}
}
static gboolean
handle_release (PvSourceOutput1 *interface,
GDBusMethodInvocation *invocation,
gpointer user_data)
{
PvSourceOutput *output = user_data;
stop_transfer (output);
pv_source_output1_complete_release (interface, invocation);
return TRUE;
}
static void
output_register_object (PvSourceOutput *output, const gchar *prefix)
{
PvSourceOutputPrivate *priv = output->priv;
PvDaemon *daemon = priv->daemon;
GDBusObjectSkeleton *skel;
gchar *name;
name = g_strdup_printf ("%s/output", prefix);
skel = g_dbus_object_skeleton_new (name);
g_free (name);
{
PvSourceOutput1 *iface;
iface = pv_source_output1_skeleton_new ();
g_signal_connect (iface, "handle-acquire", (GCallback) handle_acquire, output);
g_signal_connect (iface, "handle-release", (GCallback) handle_release, output);
g_dbus_object_skeleton_add_interface (skel, G_DBUS_INTERFACE_SKELETON (iface));
g_object_unref (iface);
}
g_free (priv->object_path);
priv->object_path = pv_daemon_export_uniquely (daemon, skel);
}
static void
output_unregister_object (PvSourceOutput *output)
{
PvSourceOutputPrivate *priv = output->priv;
PvDaemon *daemon = priv->daemon;
stop_transfer (output);
pv_daemon_unexport (daemon, priv->object_path);
}
static void
pv_source_output_finalize (GObject * object)
{
PvSourceOutput *output = PV_SOURCE_OUTPUT (object);
PvSourceOutputPrivate *priv = output->priv;
output_unregister_object (output);
g_object_unref (priv->daemon);
g_free (priv->object_path);
G_OBJECT_CLASS (pv_source_output_parent_class)->finalize (object);
}
static void
pv_source_output_constructed (GObject * object)
{
PvSourceOutput *output = PV_SOURCE_OUTPUT (object);
PvSourceOutputPrivate *priv = output->priv;
output_register_object (output, priv->object_path);
G_OBJECT_CLASS (pv_source_output_parent_class)->constructed (object);
}
static void
pv_source_output_class_init (PvSourceOutputClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (PvSourceOutputPrivate));
gobject_class->finalize = pv_source_output_finalize;
gobject_class->set_property = pv_source_output_set_property;
gobject_class->get_property = pv_source_output_get_property;
gobject_class->constructed = pv_source_output_constructed;
g_object_class_install_property (gobject_class,
PROP_DAEMON,
g_param_spec_object ("daemon",
"Daemon",
"The daemon",
PV_TYPE_DAEMON,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_OBJECT_PATH,
g_param_spec_string ("object-path",
"Object Path",
"The object path",
NULL,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_SOCKET,
g_param_spec_object ("socket",
"Socket",
"The socket with data",
G_TYPE_SOCKET,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS));
}
static void
pv_source_output_init (PvSourceOutput * output)
{
output->priv = PV_SOURCE_OUTPUT_GET_PRIVATE (output);
}
const gchar *
pv_source_output_get_object_path (PvSourceOutput *output)
{
PvSourceOutputPrivate *priv;
g_return_val_if_fail (PV_IS_SOURCE_OUTPUT (output), NULL);
priv = output->priv;
return priv->object_path;
}