2 * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
4 * tunerchannel.h: tuner channel object design
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
22 #ifndef __GST_TUNER_CHANNEL_H__
23 #define __GST_TUNER_CHANNEL_H__
29 #define GST_TYPE_TUNER_CHANNEL \
30 (gst_tuner_channel_get_type ())
31 #define GST_TUNER_CHANNEL(obj) \
32 (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TUNER_CHANNEL, \
34 #define GST_TUNER_CHANNEL_CLASS(klass) \
35 (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_TUNER_CHANNEL, \
36 GstTunerChannelClass))
37 #define GST_IS_TUNER_CHANNEL(obj) \
38 (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_TUNER_CHANNEL))
39 #define GST_IS_TUNER_CHANNEL_CLASS(klass) \
40 (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_TUNER_CHANNEL))
42 typedef struct _GstTunerChannel GstTunerChannel;
43 typedef struct _GstTunerChannelClass GstTunerChannelClass;
46 * GstTunerChannelFlags:
47 * @GST_TUNER_CHANNEL_INPUT: The channel is for input
48 * @GST_TUNER_CHANNEL_OUTPUT: The channel is for output
49 * @GST_TUNER_CHANNEL_FREQUENCY: The channel has a frequency setting
50 * and signal strength.
51 * @GST_TUNER_CHANNEL_AUDIO: The channel carries audio.
53 * An enumeration for flags indicating the available capabilities
54 * of a #GstTunerChannel.
57 GST_TUNER_CHANNEL_INPUT = (1<<0),
58 GST_TUNER_CHANNEL_OUTPUT = (1<<1),
59 GST_TUNER_CHANNEL_FREQUENCY = (1<<2),
60 GST_TUNER_CHANNEL_AUDIO = (1<<3)
61 } GstTunerChannelFlags;
64 * GST_TUNER_CHANNEL_HAS_FLAG:
65 * @channel: A #GstTunerChannel
66 * @flag: The flag to check for
68 * Macro to check if the given flag is set on a channel
70 #define GST_TUNER_CHANNEL_HAS_FLAG(channel, flag) \
71 ((channel)->flags & flag)
75 * @label: A string containing a descriptive name for this channel
76 * @flags: A set of #GstTunerChannelFlags for this channel
77 * @freq_multiplicator: The step size (in Hz) for the frequency setting.
78 * @min_frequency: Minimum valid frequency setting (in Hz).
79 * @max_frequency: Maximum valid frequency setting (in Hz).
80 * @min_signal: Minimum reported signal strength value.
81 * @max_signal: Maximum reported signal strength value.
83 struct _GstTunerChannel {
88 GstTunerChannelFlags flags;
89 gfloat freq_multiplicator;
96 gpointer _gst_reserved[GST_PADDING];
99 struct _GstTunerChannelClass {
104 void (*frequency_changed) (GstTunerChannel *channel,
106 void (*signal_changed) (GstTunerChannel *channel,
109 gpointer _gst_reserved[GST_PADDING];
112 GType gst_tuner_channel_get_type (void);
116 #endif /* __GST_TUNER_CHANNEL_H__ */