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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wim.taymans@chello.be>
*
* gstevent.h: Header for GstEvent subsystem
*
* 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.
*/
#include "gst/gstinfo.h"
#include "gst/gstevent.h"
GType _gst_event_type;
static GMemChunk *_gst_event_chunk;
static GMutex *_gst_event_chunk_lock;
void
_gst_event_initialize (void)
{
gint eventsize = sizeof(GstEvent);
static const GTypeInfo event_info = {
0,
NULL,
NULL,
NULL,
NULL,
NULL,
0,
0,
NULL,
NULL,
};
// round up to the nearest 32 bytes for cache-line and other efficiencies
eventsize = (((eventsize-1) / 32) + 1) * 32;
_gst_event_chunk = g_mem_chunk_new ("GstEvent", eventsize,
eventsize * 32, G_ALLOC_AND_FREE);
_gst_event_chunk_lock = g_mutex_new ();
// register the type
_gst_event_type = g_type_register_static (G_TYPE_INT, "GstEvent", &event_info, 0);
}
/**
* gst_event_new:
* @type: The type of the new event
*
* Allocate a new event of the given type.
*
* Returns: A new event.
*/
GstEvent*
gst_event_new (GstEventType type)
{
GstEvent *event;
g_mutex_lock (_gst_event_chunk_lock);
event = g_mem_chunk_alloc (_gst_event_chunk);
g_mutex_unlock (_gst_event_chunk_lock);
GST_INFO (GST_CAT_EVENT, "creating new event %p", event);
GST_DATA_TYPE (event) = _gst_event_type;
GST_EVENT_TYPE (event) = type;
return event;
}
/**
* gst_event_free:
* @event: The event to free
*
* Free the given element.
*/
void
gst_event_free (GstEvent* event)
{
g_mutex_lock (_gst_event_chunk_lock);
g_mem_chunk_free (_gst_event_chunk, event);
g_mutex_unlock (_gst_event_chunk_lock);
}
/**
* gst_event_new_seek:
* @type: The type of the seek event
* @offset: The offset of the seek
* @flush: A boolean indicating a flush has to be performed as well
*
* Allocate a new seek event with the given parameters.
*
* Returns: A new seek event.
*/
GstEvent*
gst_event_new_seek (GstSeekType type, guint64 offset, gboolean flush)
{
GstEvent *event;
event = gst_event_new (GST_EVENT_SEEK);
GST_EVENT_SEEK_TYPE (event) = type;
GST_EVENT_SEEK_OFFSET (event) = offset;
GST_EVENT_SEEK_FLUSH (event) = flush;
return event;
}
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