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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2005 Wim Taymans <wim@fluendo.com>
*
* gstaudioclock.h: Clock for use by audio plugins
*
* 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_AUDIO_AUDIO_H__
#include <gst/audio/audio.h>
#endif
#ifndef __GST_AUDIO_CLOCK_H__
#define __GST_AUDIO_CLOCK_H__
#include <gst/gst.h>
#include <gst/gstsystemclock.h>
G_BEGIN_DECLS
#define GST_TYPE_AUDIO_CLOCK \
(gst_audio_clock_get_type())
#define GST_AUDIO_CLOCK(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_CLOCK,GstAudioClock))
#define GST_AUDIO_CLOCK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_CLOCK,GstAudioClockClass))
#define GST_IS_AUDIO_CLOCK(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_CLOCK))
#define GST_IS_AUDIO_CLOCK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_CLOCK))
#define GST_AUDIO_CLOCK_CAST(obj) \
((GstAudioClock*)(obj))
typedef struct _GstAudioClock GstAudioClock;
typedef struct _GstAudioClockClass GstAudioClockClass;
/**
* GstAudioClockGetTimeFunc:
* @clock: the #GstAudioClock
* @user_data: user data
*
* This function will be called whenever the current clock time needs to be
* calculated. If this function returns #GST_CLOCK_TIME_NONE, the last reported
* time will be returned by the clock.
*
* Returns: the current time or #GST_CLOCK_TIME_NONE if the previous time should
* be used.
*/
typedef GstClockTime (*GstAudioClockGetTimeFunc) (GstClock *clock, gpointer user_data);
/**
* GstAudioClock:
*
* Opaque #GstAudioClock.
*/
struct _GstAudioClock {
GstSystemClock clock;
/*< protected >*/
GstAudioClockGetTimeFunc func;
gpointer user_data;
GDestroyNotify destroy_notify;
/*< private >*/
GstClockTime last_time;
GstClockTimeDiff time_offset;
gpointer _gst_reserved[GST_PADDING];
};
struct _GstAudioClockClass {
GstSystemClockClass parent_class;
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
GST_AUDIO_API
GType gst_audio_clock_get_type (void);
GST_AUDIO_API
GstClock* gst_audio_clock_new (const gchar *name, GstAudioClockGetTimeFunc func,
gpointer user_data, GDestroyNotify destroy_notify);
GST_AUDIO_API
void gst_audio_clock_reset (GstAudioClock *clock, GstClockTime time);
GST_AUDIO_API
GstClockTime gst_audio_clock_get_time (GstAudioClock * clock);
GST_AUDIO_API
GstClockTime gst_audio_clock_adjust (GstAudioClock * clock, GstClockTime time);
GST_AUDIO_API
void gst_audio_clock_invalidate (GstAudioClock * clock);
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstAudioClock, gst_object_unref)
G_END_DECLS
#endif /* __GST_AUDIO_CLOCK_H__ */
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