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Added the event code to create/register/destroy events from a memchunk.

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Original commit message from CVS:
Added the event code to create/register/destroy events from a memchunk.
This commit is contained in:
Wim Taymans 2001-09-10 22:27:06 +00:00
parent e0ad55e8cd
commit 792745e8a6
3 changed files with 87 additions and 3 deletions
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1
gst/Makefile.am
View file

@ -69,6 +69,7 @@ libgst_la_SOURCES = \
gstdparammanager.c \
gstelement.c \
gstelementfactory.c \
gstevent.c \
gstextratypes.c \
gstinfo.c \
gstpad.c \

81
gst/gstevent.c Normal file
View file

@ -0,0 +1,81 @@
/* 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, //sizeof(GstElementClass),
NULL,
NULL,
NULL,
NULL,
NULL,
0, //sizeof(GstElement),
0,
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);
}
GstEvent*
gst_event_empty_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;
return event;
}
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);
}

6
gst/gstevent.h
View file

@ -39,8 +39,10 @@ typedef enum {
GST_EVENT_SEEK,
} GstEventType;
extern GType _gst_event_type;
#define GST_EVENT(event) ((GstEvent*)(event))
#define GST_IS_EVENT(event) (GST_DATA_TYPE(event) == gst_event_get_type())
#define GST_IS_EVENT(event) (GST_DATA_TYPE(event) == _gst_event_type)
#define GST_EVENT_TYPE(event) (GST_EVENT(event)->type)
@ -52,7 +54,7 @@ struct _GstEvent {
GstEventType type;
};
GType gst_event_get_type (void);
void _gst_event_initialize (void);
GstEvent* gst_event_empty_new (GstEventType type);
void gst_event_free (GstEvent* event);