sys/v4l2/gstv4l2tuner.h

   1 /* G-Streamer generic V4L2 element - Tuner interface implementation
   2  * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
   3  * Copyright (C) 2006 Edgard Lima <edgard.lima@indt.org.br>
   4  *
   5  * gstv4l2tuner.h: tuner interface implementation for V4L2
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public
  18  * License along with this library; if not, write to the
  19  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20  * Boston, MA 02111-1307, USA.
  21  */
  22
  23 #ifndef __GST_V4L2_TUNER_H__
  24 #define __GST_V4L2_TUNER_H__
  25
  26 #include <gst/gst.h>
  27 #include <gst/interfaces/tuner.h>
  28
  29 #include "gstv4l2object.h"
  30
  31 G_BEGIN_DECLS
  32
  33 #define GST_TYPE_V4L2_TUNER_CHANNEL \
  34   (gst_v4l2_tuner_channel_get_type ())
  35 #define GST_V4L2_TUNER_CHANNEL(obj) \
  36   (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_V4L2_TUNER_CHANNEL, \
  37           GstV4l2TunerChannel))
  38 #define GST_V4L2_TUNER_CHANNEL_CLASS(klass) \
  39   (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_V4L2_TUNER_CHANNEL, \
  40        GstV4l2TunerChannelClass))
  41 #define GST_IS_V4L2_TUNER_CHANNEL(obj) \
  42   (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_V4L2_TUNER_CHANNEL))
  43 #define GST_IS_V4L2_TUNER_CHANNEL_CLASS(klass) \
  44   (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_V4L2_TUNER_CHANNEL))
  45
  46 typedef struct _GstV4l2TunerChannel {
  47   GstTunerChannel parent;
  48
  49   guint32         index;
  50   guint32         tuner;
  51   guint32         audio;
  52 } GstV4l2TunerChannel;
  53
  54 typedef struct _GstV4l2TunerChannelClass {
  55   GstTunerChannelClass parent;
  56 } GstV4l2TunerChannelClass;
  57
  58 #define GST_TYPE_V4L2_TUNER_NORM \
  59   (gst_v4l2_tuner_norm_get_type ())
  60 #define GST_V4L2_TUNER_NORM(obj) \
  61   (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_V4L2_TUNER_NORM, \
  62           GstV4l2TunerNorm))
  63 #define GST_V4L2_TUNER_NORM_CLASS(klass) \
  64   (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_V4L2_TUNER_NORM, \
  65        GstV4l2TunerNormClass))
  66 #define GST_IS_V4L2_TUNER_NORM(obj) \
  67   (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_V4L2_TUNER_NORM))
  68 #define GST_IS_V4L2_TUNER_NORM_CLASS(klass) \
  69   (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_V4L2_TUNER_NORM))
  70
  71 typedef struct _GstV4l2TunerNorm {
  72   GstTunerNorm parent;
  73
  74   v4l2_std_id  index;
  75 } GstV4l2TunerNorm;
  76
  77 typedef struct _GstV4l2TunerNormClass {
  78   GstTunerNormClass parent;
  79 } GstV4l2TunerNormClass;
  80
  81 extern gboolean
  82 gst_v4l2_tuner_set_channel (GstV4l2Object * v4l2object, GstTunerChannel * channel);
  83 extern gboolean
  84 gst_v4l2_tuner_set_norm (GstV4l2Object * v4l2object, GstTunerNorm * norm);
  85 extern gboolean
  86 gst_v4l2_tuner_set_frequency (GstV4l2Object * v4l2object,
  87                               GstTunerChannel * channel, gulong frequency);
  88
  89 GType gst_v4l2_tuner_channel_get_type (void);
  90 GType gst_v4l2_tuner_norm_get_type (void);
  91
  92 extern const GList *
  93 gst_v4l2_tuner_list_channels (GstV4l2Object * v4l2object);
  94 extern void
  95 gst_v4l2_tuner_set_channel_and_notify (GstV4l2Object * v4l2object, GstTunerChannel * channel);
  96 extern GstTunerChannel *
  97 gst_v4l2_tuner_get_channel (GstV4l2Object * v4l2object);
  98
  99 extern const GList *
 100 gst_v4l2_tuner_list_norms (GstV4l2Object * v4l2object);
 101 extern void
 102 gst_v4l2_tuner_set_norm_and_notify (GstV4l2Object * v4l2object, GstTunerNorm * norm);
 103 extern GstTunerNorm *
 104 gst_v4l2_tuner_get_norm (GstV4l2Object * v4l2object);
 105
 106 extern void
 107 gst_v4l2_tuner_set_frequency_and_notify (GstV4l2Object * v4l2object,
 108                                          GstTunerChannel * channel, gulong frequency);
 109 extern gulong
 110 gst_v4l2_tuner_get_frequency (GstV4l2Object * v4l2object, GstTunerChannel * channel);
 111 extern gint
 112 gst_v4l2_tuner_signal_strength (GstV4l2Object * v4l2object, GstTunerChannel * channel);
 113
 114 #define GST_IMPLEMENT_V4L2_TUNER_METHODS(Type, interface_as_function)                 \
 115                                                                                       \
 116 static const GList *                                                                  \
 117 interface_as_function ## _tuner_list_channels (GstTuner * mixer)                      \
 118 {                                                                                     \
 119   Type *this = (Type*) mixer;                                                         \
 120   return gst_v4l2_tuner_list_channels (this->v4l2object);                             \
 121 }                                                                                     \
 122                                                                                       \
 123 static void                                                                           \
 124 interface_as_function ## _tuner_set_channel_and_notify (GstTuner * mixer,             \
 125                                                         GstTunerChannel * channel)    \
 126 {                                                                                     \
 127   Type *this = (Type*) mixer;                                                         \
 128   gst_v4l2_tuner_set_channel_and_notify (this->v4l2object, channel);                  \
 129 }                                                                                     \
 130 static GstTunerChannel *                                                              \
 131 interface_as_function ## _tuner_get_channel (GstTuner * mixer)                        \
 132 {                                                                                     \
 133   Type *this = (Type*) mixer;                                                         \
 134   return gst_v4l2_tuner_get_channel (this->v4l2object);                               \
 135 }                                                                                     \
 136 static const GList *                                                                  \
 137 interface_as_function ## _tuner_list_norms (GstTuner * mixer)                         \
 138 {                                                                                     \
 139   Type *this = (Type*) mixer;                                                         \
 140   return gst_v4l2_tuner_list_norms (this->v4l2object);                                \
 141 }                                                                                     \
 142 static void                                                                           \
 143 interface_as_function ## _tuner_set_norm_and_notify (GstTuner * mixer,                \
 144                                                      GstTunerNorm * norm)             \
 145 {                                                                                     \
 146   Type *this = (Type*) mixer;                                                         \
 147   gst_v4l2_tuner_set_norm_and_notify (this->v4l2object, norm);                        \
 148 }                                                                                     \
 149 static GstTunerNorm *                                                                 \
 150 interface_as_function ## _tuner_get_norm (GstTuner * mixer)                           \
 151 {                                                                                     \
 152   Type *this = (Type*) mixer;                                                         \
 153   return gst_v4l2_tuner_get_norm (this->v4l2object);                                  \
 154 }                                                                                     \
 155                                                                                       \
 156 static void                                                                           \
 157 interface_as_function ## _tuner_set_frequency_and_notify (GstTuner * mixer,           \
 158                                                           GstTunerChannel * channel,  \
 159                                                           gulong frequency)           \
 160 {                                                                                     \
 161   Type *this = (Type*) mixer;                                                         \
 162   gst_v4l2_tuner_set_frequency_and_notify (this->v4l2object, channel, frequency);     \
 163 }                                                                                     \
 164                                                                                       \
 165 static gulong                                                                         \
 166 interface_as_function ## _tuner_get_frequency (GstTuner * mixer,                      \
 167                                                GstTunerChannel * channel)             \
 168 {                                                                                     \
 169   Type *this = (Type*) mixer;                                                         \
 170   return gst_v4l2_tuner_get_frequency (this->v4l2object, channel);                    \
 171 }                                                                                     \
 172                                                                                       \
 173 static gint                                                                           \
 174 interface_as_function ## _tuner_signal_strength (GstTuner * mixer,                    \
 175                                                  GstTunerChannel * channel)           \
 176 {                                                                                     \
 177   Type *this = (Type*) mixer;                                                         \
 178   return gst_v4l2_tuner_signal_strength (this->v4l2object, channel);                  \
 179 }                                                                                     \
 180                                                                                       \
 181 void                                                                                  \
 182 interface_as_function ## _tuner_interface_init (GstTunerClass * klass)                \
 183 {                                                                                     \
 184   /* default virtual functions */                                                     \
 185   klass->list_channels = interface_as_function ## _tuner_list_channels;               \
 186   klass->set_channel = interface_as_function ## _tuner_set_channel_and_notify;        \
 187   klass->get_channel = interface_as_function ## _tuner_get_channel;                   \
 188                                                                                       \
 189   klass->list_norms = interface_as_function ## _tuner_list_norms;                     \
 190   klass->set_norm = interface_as_function ## _tuner_set_norm_and_notify;              \
 191   klass->get_norm = interface_as_function ## _tuner_get_norm;                         \
 192                                                                                       \
 193   klass->set_frequency = interface_as_function ## _tuner_set_frequency_and_notify;    \
 194   klass->get_frequency = interface_as_function ## _tuner_get_frequency;               \
 195   klass->signal_strength = interface_as_function ## _tuner_signal_strength;           \
 196 }                                                                                     \
 197
 198 #endif /* __GST_V4L2_TUNER_H__ */