sys/v4l2/gstv4l2tuner.h

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