1 /* GStreamer - GParamSpecs for for some of our types
2 * Copyright (C) 2007 Tim-Philipp Müller <tim centricular net>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
20 #ifndef __GST_PARAMSPECS_H__
21 #define __GST_PARAMSPECS_H__
23 #include <gst/gstvalue.h>
27 /* --- paramspec flags */
30 * GST_PARAM_CONTROLLABLE:
32 * Use this flag on GObject properties to signal they can make sense to be.
33 * controlled over time. This hint is used by the GstController.
35 #define GST_PARAM_CONTROLLABLE (1 << (G_PARAM_USER_SHIFT + 1))
38 * GST_PARAM_MUTABLE_READY:
40 * Use this flag on GObject properties of GstElements to indicate that
41 * they can be changed when the element is in the READY or lower state.
45 #define GST_PARAM_MUTABLE_READY (1 << (G_PARAM_USER_SHIFT + 2))
48 * GST_PARAM_MUTABLE_PAUSED:
50 * Use this flag on GObject properties of GstElements to indicate that
51 * they can be changed when the element is in the PAUSED or lower state.
52 * This flag implies GST_PARAM_MUTABLE_READY.
56 #define GST_PARAM_MUTABLE_PAUSED (1 << (G_PARAM_USER_SHIFT + 3))
59 * GST_PARAM_MUTABLE_PLAYING:
61 * Use this flag on GObject properties of GstElements to indicate that
62 * they can be changed when the element is in the PLAYING or lower state.
63 * This flag implies GST_PARAM_MUTABLE_PAUSED.
67 #define GST_PARAM_MUTABLE_PLAYING (1 << (G_PARAM_USER_SHIFT + 4))
70 * GST_PARAM_USER_SHIFT:
72 * Bits based on GST_PARAM_USER_SHIFT can be used by 3rd party applications.
74 #define GST_PARAM_USER_SHIFT (1 << (G_PARAM_USER_SHIFT + 8))
77 /* --- type macros --- */
79 #define GST_TYPE_PARAM_FRACTION (gst_param_spec_fraction_get_type ())
80 #define GST_IS_PARAM_SPEC_FRACTION(pspec) (G_TYPE_CHECK_INSTANCE_TYPE ((pspec), GST_TYPE_PARAM_FRACTION))
81 #define GST_PARAM_SPEC_FRACTION(pspec) (G_TYPE_CHECK_INSTANCE_CAST ((pspec), GST_TYPE_PARAM_FRACTION, GstParamSpecFraction))
84 /* --- get_type functions --- */
86 GType gst_param_spec_fraction_get_type (void);
89 /* --- typedefs & structures --- */
91 typedef struct _GstParamSpecFraction GstParamSpecFraction;
94 * GstParamSpecFraction:
95 * @parent_instance: super class
96 * @min_num: minimal numerator
97 * @min_den: minimal denominator
98 * @max_num: maximal numerator
99 * @max_den: maximal denominator
100 * @def_num: default numerator
101 * @def_den: default denominator
103 * A GParamSpec derived structure that contains the meta data for fractional
106 struct _GstParamSpecFraction {
107 GParamSpec parent_instance;
109 gint min_num, min_den;
110 gint max_num, max_den;
111 gint def_num, def_den;
115 /* --- GParamSpec prototypes --- */
117 GParamSpec * gst_param_spec_fraction (const gchar * name,
120 gint min_num, gint min_denom,
121 gint max_num, gint max_denom,
122 gint default_num, gint default_denom,
127 #endif /* __GST_PARAMSPECS_H__ */