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
|
/* GStreamer
* Copyright (C) 2016 Thibault Saunier <thibault.saunier@collabora.com>
* 2016 Stefan Sauer <ensonic@users.sf.net>
*
* gstlv2utils.h: Header for LV2 plugin utils
*
* 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_LV2_UTILS_H__
#define __GST_LV2_UTILS_H__
#include <gst/gst.h>
#include <gst/audio/audio.h>
#include <gst/audio/audio-channels.h>
#include <lilv/lilv.h>
G_BEGIN_DECLS
typedef struct _GstLV2Group GstLV2Group;
typedef struct _GstLV2Port GstLV2Port;
typedef struct _GstLV2 GstLV2;
typedef struct _GstLV2Class GstLV2Class;
struct _GstLV2Group
{
gchar *uri; /**< RDF resource (URI or blank node) */
guint pad; /**< Gst pad index */
gchar *symbol; /**< Gst pad name / LV2 group symbol */
GArray *ports; /**< Array of GstLV2Port */
gboolean has_roles; /**< TRUE iff all ports have a known role */
};
struct _GstLV2Port
{
gint index; /**< LV2 port index (on LV2 plugin) */
gint pad; /**< Gst pad index (iff not part of a group) */
LilvNode *role; /**< Channel position / port role */
GstAudioChannelPosition position; /**< Channel position */
};
struct _GstLV2
{
GstLV2Class *klass;
LilvInstance *instance;
gboolean activated;
unsigned long rate;
struct
{
struct
{
gfloat *in;
gfloat *out;
} control;
} ports;
};
struct _GstLV2Class
{
guint properties;
LilvPlugin *plugin;
GstLV2Group in_group; /**< Array of GstLV2Group */
GstLV2Group out_group; /**< Array of GstLV2Group */
GArray *control_in_ports; /**< Array of GstLV2Port */
GArray *control_out_ports; /**< Array of GstLV2Port */
};
void gst_lv2_init (GstLV2 * lv2, GstLV2Class * lv2_class);
void gst_lv2_finalize (GstLV2 * lv2);
gboolean gst_lv2_setup (GstLV2 * lv2, unsigned long rate);
gboolean gst_lv2_cleanup (GstLV2 * lv2, GstObject *obj);
void gst_lv2_object_set_property (GstLV2 * lv2, GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
void gst_lv2_object_get_property (GstLV2 * lv2, GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
void gst_lv2_class_install_properties (GstLV2Class * lv2_class,
GObjectClass * object_class, guint offset);
void gst_lv2_element_class_set_metadata (GstLV2Class * lv2_class,
GstElementClass * elem_class, const gchar * lv2_class_tags);
void gst_lv2_class_init (GstLV2Class * lv2_class, GType type);
void gst_lv2_class_finalize (GstLV2Class * lv2_class);
G_END_DECLS
#endif /* __GST_LV2_UTILS_H__ */
|
