gst-libs/gst/interfaces/tunerchannel.h

   1 /* GStreamer Tuner
   2  * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
   3  *
   4  * tunerchannel.h: tuner channel object design
   5  *
   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.
  10  *
  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.
  15  *
  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., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  */
  21
  22 #ifndef __GST_TUNER_CHANNEL_H__
  23 #define __GST_TUNER_CHANNEL_H__
  24
  25 #include <gst/gst.h>
  26
  27 G_BEGIN_DECLS
  28
  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, \
  33                                GstTunerChannel))
  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))
  41
  42 typedef enum {
  43   GST_TUNER_CHANNEL_INPUT     = (1<<0),
  44   GST_TUNER_CHANNEL_OUTPUT    = (1<<1),
  45   GST_TUNER_CHANNEL_FREQUENCY = (1<<2),
  46   GST_TUNER_CHANNEL_AUDIO     = (1<<3)
  47 } GstTunerChannelFlags;
  48
  49 #define GST_TUNER_CHANNEL_HAS_FLAG(channel, flag) \
  50   ((channel)->flags & flag)
  51
  52 typedef struct _GstTunerChannel {
  53   GObject              parent;
  54
  55   gchar               *label;
  56   GstTunerChannelFlags flags;
  57   gfloat               freq_multiplicator;
  58   gulong               min_frequency,
  59                        max_frequency;
  60   gint                 min_signal,
  61                        max_signal;
  62 } GstTunerChannel;
  63
  64 typedef struct _GstTunerChannelClass {
  65   GObjectClass parent;
  66
  67   /* signals */
  68   void (*frequency_changed) (GstTunerChannel *channel,
  69                              gulong           frequency);
  70   void (*signal_changed)    (GstTunerChannel *channel,
  71                              gint             signal);
  72
  73   gpointer _gst_reserved[GST_PADDING];
  74 } GstTunerChannelClass;
  75
  76 GType           gst_tuner_channel_get_type      (void);
  77
  78 G_END_DECLS
  79
  80 #endif /* __GST_TUNER_CHANNEL_H__ */