gst-libs/gst/vaapi/gstvaapiobject.c

   1 /*
   2  *  gstvaapiobject.c - Base VA object
   3  *
   4  *  gstreamer-vaapi (C) 2010 Splitted-Desktop Systems
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program 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
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
  19  */
  20
  21 /**
  22  * SECTION:gstvaapiobject
  23  * @short_description: Base VA object
  24  */
  25
  26 #include "config.h"
  27 #include "gstvaapiobject.h"
  28 #include "gstvaapiobject_priv.h"
  29 #include "gstvaapiparamspecs.h"
  30 #include "gstvaapivalue.h"
  31 #include "gstvaapimarshal.h"
  32
  33 #define DEBUG 1
  34 #include "gstvaapidebug.h"
  35
  36 G_DEFINE_TYPE(GstVaapiObject, gst_vaapi_object, G_TYPE_OBJECT);
  37
  38 enum {
  39     PROP_0,
  40
  41     PROP_DISPLAY,
  42     PROP_ID
  43 };
  44
  45 enum {
  46     DESTROY,
  47
  48     LAST_SIGNAL
  49 };
  50
  51 static guint object_signals[LAST_SIGNAL] = { 0, };
  52
  53 static void
  54 gst_vaapi_object_dispose(GObject *object)
  55 {
  56     GstVaapiObjectPrivate * const priv = GST_VAAPI_OBJECT(object)->priv;
  57
  58     if (!priv->is_destroying) {
  59         priv->is_destroying = TRUE;
  60         g_signal_emit(object, object_signals[DESTROY], 0);
  61         priv->is_destroying = FALSE;
  62     }
  63
  64     G_OBJECT_CLASS(gst_vaapi_object_parent_class)->dispose(object);
  65 }
  66
  67 static void
  68 gst_vaapi_object_finalize(GObject *object)
  69 {
  70     GstVaapiObjectPrivate * const priv = GST_VAAPI_OBJECT(object)->priv;
  71
  72     priv->id = VA_INVALID_ID;
  73
  74     if (priv->display) {
  75         g_object_unref(priv->display);
  76         priv->display = NULL;
  77     }
  78
  79     G_OBJECT_CLASS(gst_vaapi_object_parent_class)->finalize(object);
  80 }
  81
  82 static void
  83 gst_vaapi_object_set_property(
  84     GObject      *gobject,
  85     guint         prop_id,
  86     const GValue *value,
  87     GParamSpec   *pspec
  88 )
  89 {
  90     GstVaapiObject * const object = GST_VAAPI_OBJECT(gobject);
  91
  92     switch (prop_id) {
  93     case PROP_DISPLAY:
  94         object->priv->display = g_object_ref(g_value_get_object(value));
  95         break;
  96     case PROP_ID:
  97         object->priv->id = gst_vaapi_value_get_id(value);
  98         break;
  99     default:
 100         G_OBJECT_WARN_INVALID_PROPERTY_ID(gobject, prop_id, pspec);
 101         break;
 102     }
 103 }
 104
 105 static void
 106 gst_vaapi_object_get_property(
 107     GObject    *gobject,
 108     guint       prop_id,
 109     GValue     *value,
 110     GParamSpec *pspec
 111 )
 112 {
 113     GstVaapiObject * const object = GST_VAAPI_OBJECT(gobject);
 114
 115     switch (prop_id) {
 116     case PROP_DISPLAY:
 117         g_value_set_object(value, gst_vaapi_object_get_display(object));
 118         break;
 119     case PROP_ID:
 120         gst_vaapi_value_set_id(value, gst_vaapi_object_get_id(object));
 121         break;
 122     default:
 123         G_OBJECT_WARN_INVALID_PROPERTY_ID(gobject, prop_id, pspec);
 124         break;
 125     }
 126 }
 127
 128 static void
 129 gst_vaapi_object_class_init(GstVaapiObjectClass *klass)
 130 {
 131     GObjectClass * const object_class = G_OBJECT_CLASS(klass);
 132
 133     g_type_class_add_private(klass, sizeof(GstVaapiObjectPrivate));
 134
 135     object_class->dispose      = gst_vaapi_object_dispose;
 136     object_class->finalize     = gst_vaapi_object_finalize;
 137     object_class->set_property = gst_vaapi_object_set_property;
 138     object_class->get_property = gst_vaapi_object_get_property;
 139
 140     /**
 141      * GstVaapiObject:display:
 142      *
 143      * The #GstVaapiDisplay this object is bound to.
 144      */
 145     g_object_class_install_property
 146         (object_class,
 147          PROP_DISPLAY,
 148          g_param_spec_object("display",
 149                              "Display",
 150                              "The GstVaapiDisplay this object is bound to",
 151                              GST_VAAPI_TYPE_DISPLAY,
 152                              G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
 153
 154     /**
 155      * GstVaapiObject:id:
 156      *
 157      * The #GstVaapiID contained in this object.
 158      */
 159     g_object_class_install_property
 160         (object_class,
 161          PROP_ID,
 162          gst_vaapi_param_spec_id("id",
 163                                  "ID",
 164                                  "The GstVaapiID contained in this object",
 165                                  VA_INVALID_ID,
 166                                  G_PARAM_READWRITE|G_PARAM_CONSTRUCT_ONLY));
 167
 168     /**
 169      * GstVaapiObject::destroy:
 170      * @object: the object which received the signal
 171      *
 172      * The ::destroy signal is emitted when an object is destroyed,
 173      * when the user released the last reference to @object.
 174      */
 175     object_signals[DESTROY] = g_signal_new(
 176         "destroy",
 177         G_TYPE_FROM_CLASS(object_class),
 178         G_SIGNAL_RUN_CLEANUP | G_SIGNAL_NO_RECURSE | G_SIGNAL_NO_HOOKS,
 179         G_STRUCT_OFFSET(GstVaapiObjectClass, destroy),
 180         NULL, NULL,
 181         gst_vaapi_marshal_VOID__VOID,
 182         G_TYPE_NONE, 0
 183     );
 184 }
 185
 186 static void
 187 gst_vaapi_object_init(GstVaapiObject *object)
 188 {
 189     GstVaapiObjectPrivate *priv = GST_VAAPI_OBJECT_GET_PRIVATE(object);
 190
 191     object->priv        = priv;
 192     priv->display       = NULL;
 193     priv->id            = VA_INVALID_ID;
 194     priv->is_destroying = FALSE;
 195 }
 196
 197 /**
 198  * gst_vaapi_object_get_display:
 199  * @object: a #GstVaapiObject
 200  *
 201  * Returns the #GstVaapiDisplay this @object is bound to.
 202  *
 203  * Return value: the parent #GstVaapiDisplay object
 204  */
 205 GstVaapiDisplay *
 206 gst_vaapi_object_get_display(GstVaapiObject *object)
 207 {
 208     g_return_val_if_fail(GST_VAAPI_IS_OBJECT(object), NULL);
 209
 210     return object->priv->display;
 211 }
 212
 213 /**
 214  * gst_vaapi_object_get_id:
 215  * @object: a #GstVaapiObject
 216  *
 217  * Returns the #GstVaapiID contained in the @object.
 218  *
 219  * Return value: the #GstVaapiID of the @object
 220  */
 221 GstVaapiID
 222 gst_vaapi_object_get_id(GstVaapiObject *object)
 223 {
 224     g_return_val_if_fail(GST_VAAPI_IS_OBJECT(object), VA_INVALID_ID);
 225
 226     return object->priv->id;
 227 }