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141 lines
6 KiB
C
141 lines
6 KiB
C
/* GStreamer Tuner
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* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
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*
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* tuner.h: tuner interface design
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_TUNER_H__
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#define __GST_TUNER_H__
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#include <gst/gst.h>
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#include "tunernorm.h"
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#include "tunerchannel.h"
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G_BEGIN_DECLS
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#define GST_TYPE_TUNER \
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(gst_tuner_get_type ())
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#define GST_TUNER(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TUNER, GstTuner))
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#define GST_IS_TUNER(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_TUNER))
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#define GST_TUNER_GET_INTERFACE(inst) \
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(G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_TYPE_TUNER, GstTunerInterface))
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typedef struct _GstTuner GstTuner;
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typedef struct _GstTunerInterface GstTunerInterface;
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/**
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* GstTunerInterface:
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* @iface: the parent interface
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* @list_channels: list available channels
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* @set_channel: set to a channel
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* @get_channel: return the current channel
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* @list_norms: list available norms
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* @set_norm: set a norm
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* @get_norm: return the current norm
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* @set_frequency: set the frequency
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* @get_frequency: return the current frequency
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* @signal_strength: get the signal strength
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* @channel_changed: default handler for channel changed notification
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* @norm_changed: default handler for norm changed notification
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* @frequency_changed: default handler for frequency changed notification
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* @signal_changed: default handler for signal-strength changed notification
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*
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* Tuner interface.
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*/
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struct _GstTunerInterface {
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GTypeInterface iface;
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/* virtual functions */
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const GList * (* list_channels) (GstTuner *tuner);
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void (* set_channel) (GstTuner *tuner,
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GstTunerChannel *channel);
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GstTunerChannel *
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(* get_channel) (GstTuner *tuner);
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const GList * (* list_norms) (GstTuner *tuner);
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void (* set_norm) (GstTuner *tuner,
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GstTunerNorm *norm);
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GstTunerNorm *(* get_norm) (GstTuner *tuner);
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void (* set_frequency) (GstTuner *tuner,
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GstTunerChannel *channel,
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gulong frequency);
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gulong (* get_frequency) (GstTuner *tuner,
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GstTunerChannel *channel);
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gint (* signal_strength) (GstTuner *tuner,
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GstTunerChannel *channel);
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/* signals */
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void (*channel_changed) (GstTuner *tuner,
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GstTunerChannel *channel);
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void (*norm_changed) (GstTuner *tuner,
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GstTunerNorm *norm);
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void (*frequency_changed) (GstTuner *tuner,
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GstTunerChannel *channel,
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gulong frequency);
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void (*signal_changed) (GstTuner *tuner,
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GstTunerChannel *channel,
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gint signal);
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};
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GType gst_tuner_get_type (void);
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/* virtual class function wrappers */
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const GList * gst_tuner_list_channels (GstTuner *tuner);
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void gst_tuner_set_channel (GstTuner *tuner,
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GstTunerChannel *channel);
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GstTunerChannel *
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gst_tuner_get_channel (GstTuner *tuner);
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const GList * gst_tuner_list_norms (GstTuner *tuner);
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void gst_tuner_set_norm (GstTuner *tuner,
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GstTunerNorm *norm);
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GstTunerNorm * gst_tuner_get_norm (GstTuner *tuner);
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void gst_tuner_set_frequency (GstTuner *tuner,
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GstTunerChannel *channel,
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gulong frequency);
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gulong gst_tuner_get_frequency (GstTuner *tuner,
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GstTunerChannel *channel);
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gint gst_tuner_signal_strength (GstTuner *tuner,
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GstTunerChannel *channel);
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/* helper functions */
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GstTunerNorm * gst_tuner_find_norm_by_name (GstTuner *tuner,
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gchar *norm);
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GstTunerChannel *gst_tuner_find_channel_by_name (GstTuner *tuner,
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gchar *channel);
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/* trigger signals */
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void gst_tuner_channel_changed (GstTuner *tuner,
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GstTunerChannel *channel);
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void gst_tuner_norm_changed (GstTuner *tuner,
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GstTunerNorm *norm);
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void gst_tuner_frequency_changed (GstTuner *tuner,
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GstTunerChannel *channel,
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gulong frequency);
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void gst_tuner_signal_changed (GstTuner *tuner,
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GstTunerChannel *channel,
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gint signal);
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G_END_DECLS
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#endif /* __GST_TUNER_H__ */
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