gstreamer/plugins/elements/gstclocksync.h
Jan Schmidt 81d55fb479 clocksync: Add new clocksync element
The clocksync element is a generic element that can be
placed in a pipeline to synchronise passing buffers to the
clock at that point. This is similar to 'identity sync=true',
but because it isn't GstBaseTransform-based, it can process
GstBufferLists without breaking them into separate GstBuffers
2020-02-26 16:36:29 +00:00

81 lines
2.3 KiB
C

/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
* 2005 Wim Taymans <wim@fluendo.com>
* Copyright (C) 2020 Jan Schmidt <jan@centricular.com>
*
* gstclocksync.h:
*
* 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_CLOCKSYNC_H__
#define __GST_CLOCKSYNC_H__
#include <gst/gst.h>
G_BEGIN_DECLS
/* #defines don't like whitespacey bits */
#define GST_TYPE_CLOCKSYNC \
(gst_clock_sync_get_type())
#define GST_CLOCKSYNC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CLOCKSYNC,GstClockSync))
#define GST_CLOCKSYNC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CLOCKSYNC,GstClockSyncClass))
#define GST_IS_CLOCKSYNC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CLOCKSYNC))
#define GST_IS_CLOCKSYNC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CLOCKSYNC))
typedef struct _GstClockSync GstClockSync;
typedef struct _GstClockSyncClass GstClockSyncClass;
struct _GstClockSync
{
GstElement element;
/*< private >*/
GstPad *sinkpad, *srcpad;
gboolean signal_handoffs;
GstSegment segment;
GstClockID clock_id;
gboolean flushing;
gboolean sync;
GCond blocked_cond;
gboolean blocked;
GstClockTimeDiff ts_offset;
GstClockTime upstream_latency;
};
struct _GstClockSyncClass
{
GstElementClass parent_class;
/* signals */
void (*handoff) (GstElement *element, GstBuffer *buf);
void (*handoff_list) (GstElement *element, GstBufferList *buffer_list);
};
GType gst_clock_sync_get_type (void);
G_END_DECLS
#endif /* __GST_CLOCKSYNC_H__ */