gstreamer/gst/mpegstream/gstmpegclock.c

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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstclock.c: Clock subsystem for maintaining time sync
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstmpegclock.h"
static void gst_mpeg_clock_class_init (GstMPEGClockClass * klass);
static void gst_mpeg_clock_init (GstMPEGClock * clock);
static GstClockTime gst_mpeg_clock_get_internal_time (GstClock * clock);
static GstSystemClockClass *parent_class = NULL;
/* static guint gst_mpeg_clock_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_mpeg_clock_get_type (void)
{
static GType clock_type = 0;
if (!clock_type) {
static const GTypeInfo clock_info = {
sizeof (GstMPEGClockClass),
NULL,
NULL,
(GClassInitFunc) gst_mpeg_clock_class_init,
NULL,
NULL,
sizeof (GstMPEGClock),
4,
(GInstanceInitFunc) gst_mpeg_clock_init,
NULL
};
clock_type = g_type_register_static (GST_TYPE_SYSTEM_CLOCK, "GstMPEGClock",
&clock_info, 0);
}
return clock_type;
}
static void
gst_mpeg_clock_class_init (GstMPEGClockClass * klass)
{
GObjectClass *gobject_class;
GstObjectClass *gstobject_class;
GstClockClass *gstclock_class;
gobject_class = (GObjectClass *) klass;
gstobject_class = (GstObjectClass *) klass;
gstclock_class = (GstClockClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_SYSTEM_CLOCK);
gstclock_class->get_internal_time = gst_mpeg_clock_get_internal_time;
}
static void
gst_mpeg_clock_init (GstMPEGClock * clock)
{
gst_object_set_name (GST_OBJECT (clock), "GstMPEGClock");
}
GstClock *
gst_mpeg_clock_new (gchar * name, GstMPEGClockGetTimeFunc func,
gpointer user_data)
{
GstMPEGClock *mpeg_clock =
GST_MPEG_CLOCK (g_object_new (GST_TYPE_MPEG_CLOCK, NULL));
mpeg_clock->func = func;
mpeg_clock->user_data = user_data;
return GST_CLOCK (mpeg_clock);
}
static GstClockTime
gst_mpeg_clock_get_internal_time (GstClock * clock)
{
GstMPEGClock *mpeg_clock = GST_MPEG_CLOCK (clock);
return mpeg_clock->func (clock, mpeg_clock->user_data);
}