gstreamer/libs/gst/controller/gstinterpolationcontrolsource.h
Sebastian Dröge 82f380704a interpolationcontrolsource: Add const qualifiers to values in the _set functions
The values are not modified and are copied, a const before the parameter
should make this even more obvious.
2010-02-19 14:31:54 +01:00

109 lines
4.3 KiB
C

/* GStreamer
*
* Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org>
*
* gstinterpolationcontrolsource.h: Control source that provides several
* interpolation methods
*
* 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_INTERPOLATION_CONTROL_SOURCE_H__
#define __GST_INTERPOLATION_CONTROL_SOURCE_H__
#include <glib-object.h>
#include <gst/gst.h>
#include "gstcontrolsource.h"
G_BEGIN_DECLS
#define GST_TYPE_INTERPOLATION_CONTROL_SOURCE \
(gst_interpolation_control_source_get_type ())
#define GST_INTERPOLATION_CONTROL_SOURCE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_INTERPOLATION_CONTROL_SOURCE, GstInterpolationControlSource))
#define GST_INTERPOLATION_CONTROL_SOURCE_CLASS(vtable) \
(G_TYPE_CHECK_CLASS_CAST ((vtable), GST_TYPE_INTERPOLATION_CONTROL_SOURCE, GstInterpolationControlSourceClass))
#define GST_IS_INTERPOLATION_CONTROL_SOURCE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_INTERPOLATION_CONTROL_SOURCE))
#define GST_IS_INTERPOLATION_CONTROL_SOURCE_CLASS(vtable) \
(G_TYPE_CHECK_CLASS_TYPE ((vtable), GST_TYPE_INTERPOLATION_CONTROL_SOURCE))
#define GST_INTERPOLATION_CONTROL_SOURCE_GET_CLASS(inst) \
(G_TYPE_INSTANCE_GET_CLASS ((inst), GST_TYPE_INTERPOLATION_CONTROL_SOURCE, GstInterpolationControlSourceClass))
typedef struct _GstInterpolationControlSource GstInterpolationControlSource;
typedef struct _GstInterpolationControlSourceClass GstInterpolationControlSourceClass;
typedef struct _GstInterpolationControlSourcePrivate GstInterpolationControlSourcePrivate;
/**
* GstInterpolateMode:
* @GST_INTERPOLATE_NONE: steps-like interpolation, default
* @GST_INTERPOLATE_TRIGGER: returns the default value of the property,
* except for times with specific values
* @GST_INTERPOLATE_LINEAR: linear interpolation
* @GST_INTERPOLATE_QUADRATIC: square interpolation (deprecated, maps to cubic)
* @GST_INTERPOLATE_CUBIC: cubic interpolation
* @GST_INTERPOLATE_USER: user-provided interpolation (not yet available)
*
* The various interpolation modes available.
*/
typedef enum
{
GST_INTERPOLATE_NONE,
GST_INTERPOLATE_TRIGGER,
GST_INTERPOLATE_LINEAR,
GST_INTERPOLATE_QUADRATIC,
GST_INTERPOLATE_CUBIC,
GST_INTERPOLATE_USER
} GstInterpolateMode;
/**
* GstInterpolationControlSource:
*
* The instance structure of #GstControlSource.
*/
struct _GstInterpolationControlSource {
GstControlSource parent;
/* <private> */
GMutex *lock;
GstInterpolationControlSourcePrivate *priv;
gpointer _gst_reserved[GST_PADDING];
};
struct _GstInterpolationControlSourceClass {
GstControlSourceClass parent_class;
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
GType gst_interpolation_control_source_get_type (void);
/* Functions */
GstInterpolationControlSource *gst_interpolation_control_source_new (void);
gboolean gst_interpolation_control_source_set_interpolation_mode (GstInterpolationControlSource *self, GstInterpolateMode mode);
gboolean gst_interpolation_control_source_set (GstInterpolationControlSource * self, GstClockTime timestamp, const GValue * value);
gboolean gst_interpolation_control_source_set_from_list (GstInterpolationControlSource * self, const GSList * timedvalues);
gboolean gst_interpolation_control_source_unset (GstInterpolationControlSource * self, GstClockTime timestamp);
void gst_interpolation_control_source_unset_all (GstInterpolationControlSource *self);
GList *gst_interpolation_control_source_get_all (GstInterpolationControlSource * self);
gint gst_interpolation_control_source_get_count (GstInterpolationControlSource * self);
G_END_DECLS
#endif /* __GST_INTERPOLATION_CONTROL_SOURCE_H__ */