1 /* GStreamer Tuner

     2  * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>

     3  *

     4  * tunerchannel.c: 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 #ifdef HAVE_CONFIG_H

    23 #include "config.h"

    24 #endif

    25 

    26 #include "tunerchannel.h"

    27 

    28 enum

    29 {

    30   /* FILL ME */

    31   SIGNAL_FREQUENCY_CHANGED,

    32   SIGNAL_SIGNAL_CHANGED,

    33   LAST_SIGNAL

    34 };

    35 

    36 static void gst_tuner_channel_class_init (GstTunerChannelClass * klass);

    37 static void gst_tuner_channel_init (GstTunerChannel * channel);

    38 static void gst_tuner_channel_dispose (GObject * object);

    39 

    40 static GObjectClass *parent_class = NULL;

    41 static guint signals[LAST_SIGNAL] = { 0 };

    42 #ifdef __SYMBIAN32__

    43 EXPORT_C

    44 #endif

    45 

    46 

    47 GType

    48 gst_tuner_channel_get_type (void)

    49 {

    50   static GType gst_tuner_channel_type = 0;

    51 

    52   if (!gst_tuner_channel_type) {

    53     static const GTypeInfo tuner_channel_info = {

    54       sizeof (GstTunerChannelClass),

    55       NULL,

    56       NULL,

    57       (GClassInitFunc) gst_tuner_channel_class_init,

    58       NULL,

    59       NULL,

    60       sizeof (GstTunerChannel),

    61       0,

    62       (GInstanceInitFunc) gst_tuner_channel_init,

    63       NULL

    64     };

    65 

    66     gst_tuner_channel_type =

    67         g_type_register_static (G_TYPE_OBJECT,

    68         "GstTunerChannel", &tuner_channel_info, 0);

    69   }

    70 

    71   return gst_tuner_channel_type;

    72 }

    73 

    74 static void

    75 gst_tuner_channel_class_init (GstTunerChannelClass * klass)

    76 {

    77   GObjectClass *object_klass = (GObjectClass *) klass;

    78 

    79   parent_class = g_type_class_peek_parent (klass);

    80 

    81   signals[SIGNAL_FREQUENCY_CHANGED] =

    82       g_signal_new ("frequency-changed", G_TYPE_FROM_CLASS (klass),

    83       G_SIGNAL_RUN_LAST,

    84       G_STRUCT_OFFSET (GstTunerChannelClass,

    85           frequency_changed),

    86       NULL, NULL, g_cclosure_marshal_VOID__ULONG, G_TYPE_NONE, 1, G_TYPE_ULONG);

    87   signals[SIGNAL_SIGNAL_CHANGED] =

    88       g_signal_new ("signal-changed", G_TYPE_FROM_CLASS (klass),

    89       G_SIGNAL_RUN_LAST,

    90       G_STRUCT_OFFSET (GstTunerChannelClass,

    91           signal_changed),

    92       NULL, NULL, g_cclosure_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT);

    93 

    94   object_klass->dispose = gst_tuner_channel_dispose;

    95 }

    96 

    97 static void

    98 gst_tuner_channel_init (GstTunerChannel * channel)

    99 {

   100   channel->label = NULL;

   101   channel->flags = 0;

   102   channel->min_frequency = channel->max_frequency = 0;

   103   channel->min_signal = channel->max_signal = 0;

   104 }

   105 

   106 static void

   107 gst_tuner_channel_dispose (GObject * object)

   108 {

   109   GstTunerChannel *channel = GST_TUNER_CHANNEL (object);

   110 

   111   if (channel->label) {

   112     g_free (channel->label);

   113     channel->label = NULL;

   114   }

   115 

   116   if (parent_class->dispose)

   117     parent_class->dispose (object);

   118 }