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
|
/* GStreamer Tuner
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* tunerchannel.h: tuner channel object design
*
* 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_TUNER_CHANNEL_H__
#define __GST_TUNER_CHANNEL_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_TUNER_CHANNEL \
(gst_tuner_channel_get_type ())
#define GST_TUNER_CHANNEL(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TUNER_CHANNEL, \
GstTunerChannel))
#define GST_TUNER_CHANNEL_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_TUNER_CHANNEL, \
GstTunerChannelClass))
#define GST_IS_TUNER_CHANNEL(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_TUNER_CHANNEL))
#define GST_IS_TUNER_CHANNEL_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_TUNER_CHANNEL))
typedef struct _GstTunerChannel GstTunerChannel;
typedef struct _GstTunerChannelClass GstTunerChannelClass;
/**
* GstTunerChannelFlags:
* @GST_TUNER_CHANNEL_INPUT: The channel is for input
* @GST_TUNER_CHANNEL_OUTPUT: The channel is for output
* @GST_TUNER_CHANNEL_FREQUENCY: The channel has a frequency setting
* and signal strength.
* @GST_TUNER_CHANNEL_AUDIO: The channel carries audio.
*
* An enumeration for flags indicating the available capabilities
* of a #GstTunerChannel.
*/
typedef enum {
GST_TUNER_CHANNEL_INPUT = (1<<0),
GST_TUNER_CHANNEL_OUTPUT = (1<<1),
GST_TUNER_CHANNEL_FREQUENCY = (1<<2),
GST_TUNER_CHANNEL_AUDIO = (1<<3)
} GstTunerChannelFlags;
/**
* GST_TUNER_CHANNEL_HAS_FLAG:
* @channel: A #GstTunerChannel
* @flag: The flag to check for
*
* Macro to check if the given flag is set on a channel
*/
#define GST_TUNER_CHANNEL_HAS_FLAG(channel, flag) \
((channel)->flags & flag)
/**
* GstTunerChannel:
* @label: A string containing a descriptive name for this channel
* @flags: A set of #GstTunerChannelFlags for this channel
* @freq_multiplicator: The step size (in Hz) for the frequency setting.
* @min_frequency: Minimum valid frequency setting (in Hz).
* @max_frequency: Maximum valid frequency setting (in Hz).
* @min_signal: Minimum reported signal strength value.
* @max_signal: Maximum reported signal strength value.
*/
struct _GstTunerChannel {
GObject parent;
/*< public >*/
gchar *label;
GstTunerChannelFlags flags;
gfloat freq_multiplicator;
gulong min_frequency;
gulong max_frequency;
gint min_signal;
gint max_signal;
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
struct _GstTunerChannelClass {
GObjectClass parent;
/*< private >*/
/* signals */
void (*frequency_changed) (GstTunerChannel *channel,
gulong frequency);
void (*signal_changed) (GstTunerChannel *channel,
gint signal);
gpointer _gst_reserved[GST_PADDING];
};
GType gst_tuner_channel_get_type (void);
G_END_DECLS
#endif /* __GST_TUNER_CHANNEL_H__ */
|
