mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-19 23:06:49 +00:00
3d887c7f07
volatile is not sufficient to provide atomic guarantees and real atomics should be used instead. GCC 11 has started warning about using volatile with atomic operations. https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1719 Discovered in https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/issues/868 Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/775>
96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
/* GStreamer valve element
|
|
*
|
|
* Copyright 2007 Collabora Ltd,
|
|
* Copyright 2007 Nokia Corporation
|
|
* @author: Olivier Crete <olivier.crete@collabora.co.uk>
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#ifndef __GST_VALVE_H__
|
|
#define __GST_VALVE_H__
|
|
|
|
#include <gst/gst.h>
|
|
|
|
G_BEGIN_DECLS
|
|
/* #define's don't like whitespacey bits */
|
|
#define GST_TYPE_VALVE \
|
|
(gst_valve_get_type())
|
|
#define GST_VALVE(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_CAST((obj), \
|
|
GST_TYPE_VALVE,GstValve))
|
|
#define GST_VALVE_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_CAST((klass), \
|
|
GST_TYPE_VALVE,GstValveClass))
|
|
#define GST_IS_VALVE(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VALVE))
|
|
#define GST_IS_VALVE_CLASS(obj) \
|
|
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VALVE))
|
|
|
|
typedef struct _GstValve GstValve;
|
|
typedef struct _GstValveClass GstValveClass;
|
|
|
|
/**
|
|
* GstValveDropMode:
|
|
* @GST_VALVE_DROP_MODE_DROP_ALL: Drop all buffers, buffer lists and events.
|
|
* @GST_VALVE_DROP_MODE_FORWARD_STICKY_EVENTS: Drop all buffers, buffer lists
|
|
* and non-sticky events but forward sticky events.
|
|
* @GST_VALVE_DROP_MODE_TRANSFORM_TO_GAP: Drop all buffers, buffer lists and
|
|
* non-sticky events but forward sticky events and forward GAP events for each
|
|
* dropped buffer.
|
|
*
|
|
* Since: 1.20
|
|
*/
|
|
typedef enum {
|
|
GST_VALVE_DROP_MODE_DROP_ALL,
|
|
GST_VALVE_DROP_MODE_FORWARD_STICKY_EVENTS,
|
|
GST_VALVE_DROP_MODE_TRANSFORM_TO_GAP,
|
|
} GstValveDropMode;
|
|
|
|
/**
|
|
* GstValve:
|
|
*
|
|
* The private valve structure
|
|
*/
|
|
struct _GstValve
|
|
{
|
|
/*< private >*/
|
|
GstElement parent;
|
|
|
|
/* atomic boolean */
|
|
gint drop;
|
|
|
|
GstValveDropMode drop_mode;
|
|
|
|
/* Protected by the stream lock */
|
|
gboolean discont;
|
|
gboolean need_repush_sticky;
|
|
|
|
GstPad *srcpad;
|
|
GstPad *sinkpad;
|
|
};
|
|
|
|
struct _GstValveClass
|
|
{
|
|
GstElementClass parent_class;
|
|
};
|
|
|
|
G_GNUC_INTERNAL GType gst_valve_get_type (void);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_VALVE_H__ */
|