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82f380704a
The values are not modified and are copied, a const before the parameter should make this even more obvious.
109 lines
4.3 KiB
C
109 lines
4.3 KiB
C
/* GStreamer
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*
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* Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org>
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*
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* gstinterpolationcontrolsource.h: Control source that provides several
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* interpolation methods
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_INTERPOLATION_CONTROL_SOURCE_H__
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#define __GST_INTERPOLATION_CONTROL_SOURCE_H__
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#include <glib-object.h>
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#include <gst/gst.h>
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#include "gstcontrolsource.h"
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G_BEGIN_DECLS
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#define GST_TYPE_INTERPOLATION_CONTROL_SOURCE \
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(gst_interpolation_control_source_get_type ())
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#define GST_INTERPOLATION_CONTROL_SOURCE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_INTERPOLATION_CONTROL_SOURCE, GstInterpolationControlSource))
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#define GST_INTERPOLATION_CONTROL_SOURCE_CLASS(vtable) \
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(G_TYPE_CHECK_CLASS_CAST ((vtable), GST_TYPE_INTERPOLATION_CONTROL_SOURCE, GstInterpolationControlSourceClass))
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#define GST_IS_INTERPOLATION_CONTROL_SOURCE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_INTERPOLATION_CONTROL_SOURCE))
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#define GST_IS_INTERPOLATION_CONTROL_SOURCE_CLASS(vtable) \
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(G_TYPE_CHECK_CLASS_TYPE ((vtable), GST_TYPE_INTERPOLATION_CONTROL_SOURCE))
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#define GST_INTERPOLATION_CONTROL_SOURCE_GET_CLASS(inst) \
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(G_TYPE_INSTANCE_GET_CLASS ((inst), GST_TYPE_INTERPOLATION_CONTROL_SOURCE, GstInterpolationControlSourceClass))
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typedef struct _GstInterpolationControlSource GstInterpolationControlSource;
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typedef struct _GstInterpolationControlSourceClass GstInterpolationControlSourceClass;
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typedef struct _GstInterpolationControlSourcePrivate GstInterpolationControlSourcePrivate;
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/**
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* GstInterpolateMode:
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* @GST_INTERPOLATE_NONE: steps-like interpolation, default
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* @GST_INTERPOLATE_TRIGGER: returns the default value of the property,
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* except for times with specific values
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* @GST_INTERPOLATE_LINEAR: linear interpolation
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* @GST_INTERPOLATE_QUADRATIC: square interpolation (deprecated, maps to cubic)
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* @GST_INTERPOLATE_CUBIC: cubic interpolation
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* @GST_INTERPOLATE_USER: user-provided interpolation (not yet available)
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*
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* The various interpolation modes available.
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*/
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typedef enum
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{
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GST_INTERPOLATE_NONE,
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GST_INTERPOLATE_TRIGGER,
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GST_INTERPOLATE_LINEAR,
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GST_INTERPOLATE_QUADRATIC,
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GST_INTERPOLATE_CUBIC,
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GST_INTERPOLATE_USER
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} GstInterpolateMode;
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/**
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* GstInterpolationControlSource:
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*
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* The instance structure of #GstControlSource.
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*/
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struct _GstInterpolationControlSource {
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GstControlSource parent;
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/* <private> */
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GMutex *lock;
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GstInterpolationControlSourcePrivate *priv;
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gpointer _gst_reserved[GST_PADDING];
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};
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struct _GstInterpolationControlSourceClass {
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GstControlSourceClass parent_class;
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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GType gst_interpolation_control_source_get_type (void);
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/* Functions */
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GstInterpolationControlSource *gst_interpolation_control_source_new (void);
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gboolean gst_interpolation_control_source_set_interpolation_mode (GstInterpolationControlSource *self, GstInterpolateMode mode);
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gboolean gst_interpolation_control_source_set (GstInterpolationControlSource * self, GstClockTime timestamp, const GValue * value);
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gboolean gst_interpolation_control_source_set_from_list (GstInterpolationControlSource * self, const GSList * timedvalues);
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gboolean gst_interpolation_control_source_unset (GstInterpolationControlSource * self, GstClockTime timestamp);
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void gst_interpolation_control_source_unset_all (GstInterpolationControlSource *self);
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GList *gst_interpolation_control_source_get_all (GstInterpolationControlSource * self);
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gint gst_interpolation_control_source_get_count (GstInterpolationControlSource * self);
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G_END_DECLS
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#endif /* __GST_INTERPOLATION_CONTROL_SOURCE_H__ */
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