mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-05 16:06:43 +00:00
131 lines
5 KiB
C
131 lines
5 KiB
C
/* GStreamer
|
|
*
|
|
* Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org>
|
|
* 2011 Stefan Sauer <ensonic@users.sf.net>
|
|
*
|
|
* gsttimedvaluecontrolsource.h: Base class for timeed value based control
|
|
* sources
|
|
*
|
|
* 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_TIMED_VALUE_CONTROL_SOURCE_H__
|
|
#define __GST_TIMED_VALUE_CONTROL_SOURCE_H__
|
|
|
|
#include <glib-object.h>
|
|
#include <gst/gst.h>
|
|
|
|
#include <gst/gstcontrolsource.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GST_TYPE_TIMED_VALUE_CONTROL_SOURCE \
|
|
(gst_timed_value_control_source_get_type ())
|
|
#define GST_TIMED_VALUE_CONTROL_SOURCE(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TIMED_VALUE_CONTROL_SOURCE, GstTimedValueControlSource))
|
|
#define GST_TIMED_VALUE_CONTROL_SOURCE_CLASS(vtable) \
|
|
(G_TYPE_CHECK_CLASS_CAST ((vtable), GST_TYPE_TIMED_VALUE_CONTROL_SOURCE, GstTimedValueControlSourceClass))
|
|
#define GST_IS_TIMED_VALUE_CONTROL_SOURCE(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_TIMED_VALUE_CONTROL_SOURCE))
|
|
#define GST_IS_TIMED_VALUE_CONTROL_SOURCE_CLASS(vtable) \
|
|
(G_TYPE_CHECK_CLASS_TYPE ((vtable), GST_TYPE_TIMED_VALUE_CONTROL_SOURCE))
|
|
#define GST_TIMED_VALUE_CONTROL_SOURCE_GET_CLASS(inst) \
|
|
(G_TYPE_INSTANCE_GET_CLASS ((inst), GST_TYPE_TIMED_VALUE_CONTROL_SOURCE, GstTimedValueControlSourceClass))
|
|
|
|
typedef struct _GstTimedValueControlSource GstTimedValueControlSource;
|
|
typedef struct _GstTimedValueControlSourceClass GstTimedValueControlSourceClass;
|
|
typedef struct _GstTimedValueControlSourcePrivate GstTimedValueControlSourcePrivate;
|
|
|
|
/**
|
|
* GstControlPoint:
|
|
*
|
|
* a internal structure for value+time and various temporary
|
|
* values used for interpolation. This "inherits" from
|
|
* GstTimedValue.
|
|
*/
|
|
typedef struct _GstControlPoint
|
|
{
|
|
/* fields from GstTimedValue. DO NOT CHANGE! */
|
|
GstClockTime timestamp; /* timestamp of the value change */
|
|
gdouble value; /* the new value */
|
|
|
|
/* internal fields */
|
|
|
|
/* Caches for the interpolators */
|
|
// FIXME: we should not have this here already ...
|
|
union {
|
|
struct {
|
|
gdouble h;
|
|
gdouble z;
|
|
} cubic;
|
|
} cache;
|
|
|
|
} GstControlPoint;
|
|
|
|
/**
|
|
* GstTimedValueControlSource:
|
|
*
|
|
* The instance structure of #GstControlSource.
|
|
*/
|
|
struct _GstTimedValueControlSource {
|
|
GstControlSource parent;
|
|
|
|
/*< protected >*/
|
|
GMutex lock;
|
|
|
|
GSequence *values; /* List of GstControlPoint */
|
|
gint nvalues; /* Number of control points */
|
|
gboolean valid_cache;
|
|
|
|
GstTimedValueControlSourcePrivate *priv;
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
struct _GstTimedValueControlSourceClass {
|
|
GstControlSourceClass parent_class;
|
|
|
|
/*< private >*/
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
#define GST_TIMED_VALUE_CONTROL_SOURCE_LOCK(o) \
|
|
g_mutex_lock(&((GstTimedValueControlSource *)o)->lock)
|
|
#define GST_TIMED_VALUE_CONTROL_SOURCE_UNLOCK(o) \
|
|
g_mutex_unlock(&((GstTimedValueControlSource *)o)->lock)
|
|
|
|
GType gst_timed_value_control_source_get_type (void);
|
|
|
|
/* Functions */
|
|
|
|
GSequenceIter * gst_timed_value_control_source_find_control_point_iter (
|
|
GstTimedValueControlSource * self,
|
|
GstClockTime timestamp);
|
|
|
|
gboolean gst_timed_value_control_source_set (GstTimedValueControlSource * self,
|
|
GstClockTime timestamp,
|
|
const gdouble value);
|
|
gboolean gst_timed_value_control_source_set_from_list (GstTimedValueControlSource * self,
|
|
const GSList * timedvalues);
|
|
gboolean gst_timed_value_control_source_unset (GstTimedValueControlSource * self,
|
|
GstClockTime timestamp);
|
|
void gst_timed_value_control_source_unset_all (GstTimedValueControlSource *self);
|
|
GList * gst_timed_value_control_source_get_all (GstTimedValueControlSource * self);
|
|
gint gst_timed_value_control_source_get_count (GstTimedValueControlSource * self);
|
|
void gst_timed_value_control_invalidate_cache (GstTimedValueControlSource * self);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_TIMED_VALUE_CONTROL_SOURCE_H__ */
|