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/* GStreamer - GParamSpecs for some of our types
* Copyright (C) 2007 Tim-Philipp Müller <tim centricular net>
*
* 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_PARAMSPECS_H__
#define __GST_PARAMSPECS_H__
#include <gst/gstvalue.h>
G_BEGIN_DECLS
/* --- paramspec flags */
/**
* GST_PARAM_CONTROLLABLE:
*
* Use this flag on GObject properties to signal they can make sense to be.
* controlled over time. This hint is used by the GstController.
*/
#define GST_PARAM_CONTROLLABLE (1 << (G_PARAM_USER_SHIFT + 1))
/**
* GST_PARAM_MUTABLE_READY:
*
* Use this flag on GObject properties of GstElements to indicate that
* they can be changed when the element is in the READY or lower state.
*/
#define GST_PARAM_MUTABLE_READY (1 << (G_PARAM_USER_SHIFT + 2))
/**
* GST_PARAM_MUTABLE_PAUSED:
*
* Use this flag on GObject properties of GstElements to indicate that
* they can be changed when the element is in the PAUSED or lower state.
* This flag implies GST_PARAM_MUTABLE_READY.
*/
#define GST_PARAM_MUTABLE_PAUSED (1 << (G_PARAM_USER_SHIFT + 3))
/**
* GST_PARAM_MUTABLE_PLAYING:
*
* Use this flag on GObject properties of GstElements to indicate that
* they can be changed when the element is in the PLAYING or lower state.
* This flag implies GST_PARAM_MUTABLE_PAUSED.
*/
#define GST_PARAM_MUTABLE_PLAYING (1 << (G_PARAM_USER_SHIFT + 4))
/**
* GST_PARAM_USER_SHIFT:
*
* Bits based on GST_PARAM_USER_SHIFT can be used by 3rd party applications.
*/
#define GST_PARAM_USER_SHIFT (1 << (G_PARAM_USER_SHIFT + 8))
/* --- type macros --- */
#define GST_TYPE_PARAM_FRACTION (gst_param_spec_fraction_get_type ())
#define GST_IS_PARAM_SPEC_FRACTION(pspec) (G_TYPE_CHECK_INSTANCE_TYPE ((pspec), GST_TYPE_PARAM_FRACTION))
#define GST_PARAM_SPEC_FRACTION(pspec) (G_TYPE_CHECK_INSTANCE_CAST ((pspec), GST_TYPE_PARAM_FRACTION, GstParamSpecFraction))
#define GST_TYPE_PARAM_ARRAY_LIST (gst_param_spec_array_get_type ())
#define GST_IS_PARAM_SPEC_ARRAY_LIST(pspec) (G_TYPE_CHECK_INSTANCE_TYPE ((pspec), GST_TYPE_PARAM_ARRAY_LIST))
#define GST_PARAM_SPEC_ARRAY_LIST(pspec) (G_TYPE_CHECK_INSTANCE_CAST ((pspec), GST_TYPE_PARAM_ARRAY_LIST, GstParamSpecArray))
/* --- get_type functions --- */
GST_API
GType gst_param_spec_fraction_get_type (void);
GST_API
GType gst_param_spec_array_get_type (void);
/* --- typedefs & structures --- */
typedef struct _GstParamSpecFraction GstParamSpecFraction;
typedef struct _GstParamSpecArray GstParamSpecArray;
/**
* GstParamSpecFraction:
* @parent_instance: super class
* @min_num: minimal numerator
* @min_den: minimal denominator
* @max_num: maximal numerator
* @max_den: maximal denominator
* @def_num: default numerator
* @def_den: default denominator
*
* A GParamSpec derived structure that contains the meta data for fractional
* properties.
*/
struct _GstParamSpecFraction {
GParamSpec parent_instance;
gint min_num, min_den;
gint max_num, max_den;
gint def_num, def_den;
};
/**
* GstParamSpecArray:
* @parent_instance: super class
* @value_array: the array of values
*
* A GParamSpec derived structure that contains the meta data for fractional
* properties.
*/
struct _GstParamSpecArray {
GParamSpec parent_instance;
GParamSpec * element_spec;
};
/* --- GParamSpec prototypes --- */
GST_API
GParamSpec * gst_param_spec_fraction (const gchar * name,
const gchar * nick,
const gchar * blurb,
gint min_num, gint min_denom,
gint max_num, gint max_denom,
gint default_num, gint default_denom,
GParamFlags flags) G_GNUC_MALLOC;
GST_API
GParamSpec * gst_param_spec_array (const gchar * name,
const gchar * nick,
const gchar * blurb,
GParamSpec * element_spec,
GParamFlags flags) G_GNUC_MALLOC;
G_END_DECLS
#endif /* __GST_PARAMSPECS_H__ */
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