1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstpluginfeature.h: Header for base GstPluginFeature
*
* 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_PLUGIN_FEATURE_H__
#define __GST_PLUGIN_FEATURE_H__
#include <glib-object.h>
#include <gst/gstobject.h>
#include <gst/gstplugin.h>
G_BEGIN_DECLS
#define GST_TYPE_PLUGIN_FEATURE (gst_plugin_feature_get_type())
#define GST_PLUGIN_FEATURE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_PLUGIN_FEATURE, GstPluginFeature))
#define GST_IS_PLUGIN_FEATURE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_PLUGIN_FEATURE))
#define GST_PLUGIN_FEATURE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_PLUGIN_FEATURE, GstPluginFeatureClass))
#define GST_IS_PLUGIN_FEATURE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_PLUGIN_FEATURE))
#define GST_PLUGIN_FEATURE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_PLUGIN_FEATURE, GstPluginFeatureClass))
#define GST_PLUGIN_FEATURE_CAST(obj) ((GstPluginFeature*)(obj))
/**
* GstPluginFeature:
*
* Opaque #GstPluginFeature structure.
*/
typedef struct _GstPluginFeature GstPluginFeature;
typedef struct _GstPluginFeatureClass GstPluginFeatureClass;
/**
* GstRank:
* @GST_RANK_NONE: will be chosen last or not at all
* @GST_RANK_MARGINAL: unlikely to be chosen
* @GST_RANK_SECONDARY: likely to be chosen
* @GST_RANK_PRIMARY: will be chosen first
*
* Element priority ranks. Defines the order in which the autoplugger (or
* similar rank-picking mechanisms, such as e.g. gst_element_make_from_uri())
* will choose this element over an alternative one with the same function.
*
* These constants serve as a rough guidance for defining the rank of a
* #GstPluginFeature. Any value is valid, including values bigger than
* @GST_RANK_PRIMARY.
*/
typedef enum {
GST_RANK_NONE = 0,
GST_RANK_MARGINAL = 64,
GST_RANK_SECONDARY = 128,
GST_RANK_PRIMARY = 256
} GstRank;
/**
* gst_plugin_feature_get_name:
* @feature: a #GstPluginFeature to get the name of @feature.
*
* Returns the name of @feature.
* For a nameless plugin feature, this returns NULL.
*
* Returns: (transfer none): the name of @feature. MT safe.
*
*/
#define gst_plugin_feature_get_name(feature) GST_OBJECT_NAME(feature)
/**
* gst_plugin_feature_set_name:
* @feature: a #GstPluginFeature to set the name of.
* @name: the new name
*
* Sets the name of the plugin feature, getting rid of the old name if there was one.
*/
#define gst_plugin_feature_set_name(feature,name) gst_object_set_name(GST_OBJECT_CAST(feature),name)
/**
* GstPluginFeatureFilter:
* @feature: the pluginfeature to check
* @user_data: the user_data that has been passed on e.g.
* gst_registry_feature_filter()
*
* A function that can be used with e.g. gst_registry_feature_filter()
* to get a list of pluginfeature that match certain criteria.
*
* Returns: %TRUE for a positive match, %FALSE otherwise
*/
typedef gboolean (*GstPluginFeatureFilter) (GstPluginFeature *feature,
gpointer user_data);
/* normal GObject stuff */
GType gst_plugin_feature_get_type (void);
GstPluginFeature *
gst_plugin_feature_load (GstPluginFeature *feature);
void gst_plugin_feature_set_rank (GstPluginFeature *feature, guint rank);
guint gst_plugin_feature_get_rank (GstPluginFeature *feature);
GstPlugin * gst_plugin_feature_get_plugin (GstPluginFeature *feature);
void gst_plugin_feature_list_free (GList *list);
GList *gst_plugin_feature_list_copy (GList *list) G_GNUC_MALLOC;
void gst_plugin_feature_list_debug (GList *list);
/**
* GST_PLUGIN_FEATURE_LIST_DEBUG:
* @list: (transfer none) (element-type Gst.PluginFeature): a #GList of
* plugin features
*
* Debug the plugin feature names in @list.
*/
#ifndef GST_DISABLE_GST_DEBUG
#define GST_PLUGIN_FEATURE_LIST_DEBUG(list) gst_plugin_feature_list_debug(list)
#else
#define GST_PLUGIN_FEATURE_LIST_DEBUG(list)
#endif
gboolean gst_plugin_feature_check_version (GstPluginFeature *feature,
guint min_major,
guint min_minor,
guint min_micro);
gint gst_plugin_feature_rank_compare_func (gconstpointer p1,
gconstpointer p2);
G_END_DECLS
#endif /* __GST_PLUGIN_FEATURE_H__ */
|
