mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-25 09:40:37 +00:00
133 lines
4.3 KiB
C
133 lines
4.3 KiB
C
/* GStreamer
|
|
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
|
|
* 2000 Wim Taymans <wtay@chello.be>
|
|
*
|
|
* gstclock.h: Header for clock 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.
|
|
*/
|
|
|
|
|
|
#ifndef __GST_CLOCK_H__
|
|
#define __GST_CLOCK_H__
|
|
|
|
#include <gst/gstobject.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GST_TYPE_CLOCK \
|
|
(gst_clock_get_type())
|
|
#define GST_CLOCK(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CLOCK,GstClock))
|
|
#define GST_CLOCK_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CLOCK,GstClockClass))
|
|
#define GST_IS_CLOCK(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CLOCK))
|
|
#define GST_IS_CLOCK_CLASS(obj) \
|
|
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CLOCK))
|
|
|
|
typedef guint64 GstClockTime;
|
|
typedef gint64 GstClockTimeDiff;
|
|
typedef gpointer GstClockID;
|
|
|
|
#define GST_CLOCK_TIME_NONE ((guint64)-1)
|
|
|
|
#define GST_SECOND ((guint64)G_USEC_PER_SEC * 1000LL)
|
|
#define GST_MSECOND ((guint64)GST_SECOND/1000LL)
|
|
#define GST_USECOND ((guint64)GST_SECOND/1000000LL)
|
|
#define GST_NSECOND ((guint64)GST_SECOND/1000000000LL)
|
|
|
|
#define GST_CLOCK_DIFF(s, e) (GstClockTimeDiff)((s)-(e))
|
|
#define GST_TIMEVAL_TO_TIME(tv) ((tv).tv_sec * GST_SECOND + (tv).tv_usec * GST_USECOND)
|
|
#define GST_TIME_TO_TIMEVAL(t,tv) \
|
|
G_STMT_START { \
|
|
(tv).tv_sec = (t) / GST_SECOND; \
|
|
(tv).tv_usec = ((t) / GST_USECOND) % GST_MSECOND; \
|
|
} G_STMT_END
|
|
|
|
typedef struct _GstClock GstClock;
|
|
typedef struct _GstClockClass GstClockClass;
|
|
|
|
typedef void (*GstClockCallback) (GstClock *clock, GstClockTime time, GstClockID id, gpointer user_data);
|
|
|
|
typedef enum
|
|
{
|
|
GST_CLOCK_STOPPED = 0,
|
|
GST_CLOCK_TIMEOUT = 1,
|
|
GST_CLOCK_EARLY = 2,
|
|
GST_CLOCK_ERROR = 3
|
|
} GstClockReturn;
|
|
|
|
struct _GstClock {
|
|
GstObject object;
|
|
|
|
GstClockTime start_time;
|
|
GstClockTime last_time;
|
|
gboolean accept_discont;
|
|
gdouble speed;
|
|
gboolean active;
|
|
GList *entries;
|
|
gboolean async_supported;
|
|
|
|
GMutex *active_mutex;
|
|
GCond *active_cond;
|
|
};
|
|
|
|
struct _GstClockClass {
|
|
GstObjectClass parent_class;
|
|
|
|
/* vtable */
|
|
GstClockTime (*get_internal_time) (GstClock *clock);
|
|
|
|
void (*set_resolution) (GstClock *clock, guint64 resolution);
|
|
guint64 (*get_resolution) (GstClock *clock);
|
|
|
|
/* signals */
|
|
};
|
|
|
|
GType gst_clock_get_type (void);
|
|
|
|
void gst_clock_set_speed (GstClock *clock, gdouble speed);
|
|
gdouble gst_clock_get_speed (GstClock *clock);
|
|
|
|
void gst_clock_set_active (GstClock *clock, gboolean active);
|
|
gboolean gst_clock_is_active (GstClock *clock);
|
|
void gst_clock_reset (GstClock *clock);
|
|
gboolean gst_clock_handle_discont (GstClock *clock, guint64 time);
|
|
gboolean gst_clock_async_supported (GstClock *clock);
|
|
|
|
GstClockTime gst_clock_get_time (GstClock *clock);
|
|
|
|
GstClockReturn gst_clock_wait (GstClock *clock, GstClockTime time, GstClockTimeDiff *jitter);
|
|
GstClockID gst_clock_wait_async (GstClock *clock, GstClockTime time,
|
|
GstClockCallback func, gpointer user_data);
|
|
void gst_clock_cancel_wait_async (GstClock *clock, GstClockID id);
|
|
GstClockID gst_clock_notify_async (GstClock *clock, GstClockTime interval,
|
|
GstClockCallback func, gpointer user_data);
|
|
void gst_clock_remove_notify_async (GstClock *clock, GstClockID id);
|
|
GstClockReturn gst_clock_wait_id (GstClock *clock, GstClockID id, GstClockTimeDiff *jitter);
|
|
|
|
GstClockID gst_clock_get_next_id (GstClock *clock);
|
|
void gst_clock_unlock_id (GstClock *clock, GstClockID id);
|
|
|
|
GstClockTime gst_clock_id_get_time (GstClockID id);
|
|
|
|
void gst_clock_set_resolution (GstClock *clock, guint64 resolution);
|
|
guint64 gst_clock_get_resolution (GstClock *clock);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_CLOCK_H__ */
|