gstreamer/subprojects/gst-plugins-bad/gst-libs/gst/player/gstplayer-g-main-context-signal-dispatcher.c

213 lines
6.6 KiB
C

/* GStreamer
*
* Copyright (C) 2014-2015 Sebastian Dröge <sebastian@centricular.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.
*/
/**
* SECTION:gstplayer-gmaincontextsignaldispatcher
* @title: GstPlayerGMainContextSignalDispatcher
* @short_description: Player GLib MainContext dispatcher
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstplayer-g-main-context-signal-dispatcher.h"
struct _GstPlayerGMainContextSignalDispatcher
{
GObject parent;
GMainContext *application_context;
};
struct _GstPlayerGMainContextSignalDispatcherClass
{
GObjectClass parent_class;
};
static void
gst_player_g_main_context_signal_dispatcher_interface_init
(GstPlayerSignalDispatcherInterface * iface);
enum
{
G_MAIN_CONTEXT_SIGNAL_DISPATCHER_PROP_0,
G_MAIN_CONTEXT_SIGNAL_DISPATCHER_PROP_APPLICATION_CONTEXT,
G_MAIN_CONTEXT_SIGNAL_DISPATCHER_PROP_LAST
};
G_DEFINE_TYPE_WITH_CODE (GstPlayerGMainContextSignalDispatcher,
gst_player_g_main_context_signal_dispatcher, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GST_TYPE_PLAYER_SIGNAL_DISPATCHER,
gst_player_g_main_context_signal_dispatcher_interface_init));
static GParamSpec
* g_main_context_signal_dispatcher_param_specs
[G_MAIN_CONTEXT_SIGNAL_DISPATCHER_PROP_LAST] = { NULL, };
static void
gst_player_g_main_context_signal_dispatcher_finalize (GObject * object)
{
GstPlayerGMainContextSignalDispatcher *self =
GST_PLAYER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER (object);
if (self->application_context)
g_main_context_unref (self->application_context);
G_OBJECT_CLASS
(gst_player_g_main_context_signal_dispatcher_parent_class)->finalize
(object);
}
static void
gst_player_g_main_context_signal_dispatcher_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstPlayerGMainContextSignalDispatcher *self =
GST_PLAYER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER (object);
switch (prop_id) {
case G_MAIN_CONTEXT_SIGNAL_DISPATCHER_PROP_APPLICATION_CONTEXT:
self->application_context = g_value_dup_boxed (value);
if (!self->application_context)
self->application_context = g_main_context_ref_thread_default ();
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_player_g_main_context_signal_dispatcher_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstPlayerGMainContextSignalDispatcher *self =
GST_PLAYER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER (object);
switch (prop_id) {
case G_MAIN_CONTEXT_SIGNAL_DISPATCHER_PROP_APPLICATION_CONTEXT:
g_value_set_boxed (value, self->application_context);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_player_g_main_context_signal_dispatcher_class_init
(GstPlayerGMainContextSignalDispatcherClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize =
gst_player_g_main_context_signal_dispatcher_finalize;
gobject_class->set_property =
gst_player_g_main_context_signal_dispatcher_set_property;
gobject_class->get_property =
gst_player_g_main_context_signal_dispatcher_get_property;
g_main_context_signal_dispatcher_param_specs
[G_MAIN_CONTEXT_SIGNAL_DISPATCHER_PROP_APPLICATION_CONTEXT] =
g_param_spec_boxed ("application-context", "Application Context",
"Application GMainContext to dispatch signals to", G_TYPE_MAIN_CONTEXT,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (gobject_class,
G_MAIN_CONTEXT_SIGNAL_DISPATCHER_PROP_LAST,
g_main_context_signal_dispatcher_param_specs);
}
static void
gst_player_g_main_context_signal_dispatcher_init
(G_GNUC_UNUSED GstPlayerGMainContextSignalDispatcher * self)
{
}
typedef struct
{
void (*emitter) (gpointer data);
gpointer data;
GDestroyNotify destroy;
} GMainContextSignalDispatcherData;
static gboolean
g_main_context_signal_dispatcher_dispatch_gsourcefunc (gpointer user_data)
{
GMainContextSignalDispatcherData *data = user_data;
data->emitter (data->data);
return G_SOURCE_REMOVE;
}
static void
g_main_context_signal_dispatcher_dispatch_destroy (gpointer user_data)
{
GMainContextSignalDispatcherData *data = user_data;
if (data->destroy)
data->destroy (data->data);
g_free (data);
}
static void
gst_player_g_main_context_signal_dispatcher_dispatch (GstPlayerSignalDispatcher
* iface, G_GNUC_UNUSED GstPlayer * player, void (*emitter) (gpointer data),
gpointer data, GDestroyNotify destroy)
{
GstPlayerGMainContextSignalDispatcher *self =
GST_PLAYER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER (iface);
GMainContextSignalDispatcherData *gsourcefunc_data =
g_new (GMainContextSignalDispatcherData, 1);
gsourcefunc_data->emitter = emitter;
gsourcefunc_data->data = data;
gsourcefunc_data->destroy = destroy;
g_main_context_invoke_full (self->application_context,
G_PRIORITY_DEFAULT, g_main_context_signal_dispatcher_dispatch_gsourcefunc,
gsourcefunc_data, g_main_context_signal_dispatcher_dispatch_destroy);
}
static void
gst_player_g_main_context_signal_dispatcher_interface_init
(GstPlayerSignalDispatcherInterface * iface)
{
iface->dispatch = gst_player_g_main_context_signal_dispatcher_dispatch;
}
/**
* gst_player_g_main_context_signal_dispatcher_new:
* @application_context: (allow-none): GMainContext to use or %NULL
*
* Creates a new GstPlayerSignalDispatcher that uses @application_context,
* or the thread default one if %NULL is used. See gst_player_new().
*
* Returns: (transfer full): the new GstPlayerSignalDispatcher
*/
GstPlayerSignalDispatcher *
gst_player_g_main_context_signal_dispatcher_new (GMainContext *
application_context)
{
return g_object_new (GST_TYPE_PLAYER_G_MAIN_CONTEXT_SIGNAL_DISPATCHER,
"application-context", application_context, NULL);
}