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device: add generic struct with properties

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Add a generic structure to hold any additional properties about the
device.
This commit is contained in:
Wim Taymans 2015-07-15 18:21:13 +02:00
parent a7ea17a83d
commit 661a1947b1
3 changed files with 55 additions and 14 deletions
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41
gst/gstdevice.c
View file

@ -46,7 +46,8 @@ enum
{
PROP_DISPLAY_NAME = 1,
PROP_CAPS,
PROP_DEVICE_CLASS
PROP_DEVICE_CLASS,
PROP_PROPERTIES
};
enum
@ -60,6 +61,7 @@ struct _GstDevicePrivate
GstCaps *caps;
gchar *device_class;
gchar *display_name;
GstStructure *properties;
};
@ -97,6 +99,10 @@ gst_device_class_init (GstDeviceClass * klass)
g_param_spec_string ("device-class", "Device Class",
"The Class of the device", "",
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class, PROP_PROPERTIES,
g_param_spec_boxed ("properties", "Properties",
"The extra properties of the device", GST_TYPE_STRUCTURE,
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
signals[REMOVED] = g_signal_new ("removed", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 0);
@ -116,6 +122,8 @@ gst_device_finalize (GObject * object)
gst_caps_replace (&device->priv->caps, NULL);
if (device->priv->properties)
gst_structure_free (device->priv->properties);
g_free (device->priv->display_name);
g_free (device->priv->device_class);
@ -141,6 +149,10 @@ gst_device_get_property (GObject * object, guint prop_id,
case PROP_DEVICE_CLASS:
g_value_take_string (value, gst_device_get_device_class (gstdevice));
break;
case PROP_PROPERTIES:
if (gstdevice->priv->properties)
g_value_take_boxed (value, gst_device_get_properties (gstdevice));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -166,6 +178,11 @@ gst_device_set_property (GObject * object, guint prop_id,
case PROP_DEVICE_CLASS:
gstdevice->priv->device_class = g_value_dup_string (value);
break;
case PROP_PROPERTIES:
if (gstdevice->priv->properties)
gst_structure_free (gstdevice->priv->properties);
gstdevice->priv->properties = g_value_dup_boxed (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -262,6 +279,28 @@ gst_device_get_device_class (GstDevice * device)
return g_strdup ("");
}
/**
* gst_device_get_properties:
* @device: a #GstDevice
*
* Gets the extra properties of a device.
*
* Returns: The extra properties or %NULL when there are none.
* Free with gst_structure_free() after use.
*
* Since: 1.6
*/
GstStructure *
gst_device_get_properties (GstDevice * device)
{
g_return_val_if_fail (GST_IS_DEVICE (device), NULL);
if (device->priv->properties != NULL)
return gst_structure_copy (device->priv->properties);
else
return NULL;
}
/**
* gst_device_reconfigure_element:
* @device: a #GstDevice

27
gst/gstdevice.h
View file

@ -77,28 +77,29 @@ struct _GstDevice {
struct _GstDeviceClass {
GstObjectClass parent_class;
GstElement * (*create_element) (GstDevice * device, const gchar * name);
gboolean (*reconfigure_element) (GstDevice * device, GstElement * element);
GstElement * (*create_element) (GstDevice * device, const gchar * name);
gboolean (*reconfigure_element) (GstDevice * device, GstElement * element);
/*< private >*/
gpointer _gst_reserved[GST_PADDING];
};
GType gst_device_get_type (void);
GType gst_device_get_type (void);
GstElement * gst_device_create_element (GstDevice * device, const gchar * name);
GstElement * gst_device_create_element (GstDevice * device, const gchar * name);
GstCaps * gst_device_get_caps (GstDevice * device);
gchar * gst_device_get_display_name (GstDevice * device);
gchar * gst_device_get_device_class (GstDevice * device);
gboolean gst_device_reconfigure_element (GstDevice * device,
GstElement * element);
GstCaps * gst_device_get_caps (GstDevice * device);
gchar * gst_device_get_display_name (GstDevice * device);
gchar * gst_device_get_device_class (GstDevice * device);
GstStructure * gst_device_get_properties (GstDevice * device);
gboolean gst_device_reconfigure_element (GstDevice * device,
GstElement * element);
gboolean gst_device_has_classesv (GstDevice * device,
gchar ** classes);
gboolean gst_device_has_classesv (GstDevice * device,
gchar ** classes);
gboolean gst_device_has_classes (GstDevice * device,
const gchar * classes);
gboolean gst_device_has_classes (GstDevice * device,
const gchar * classes);
G_END_DECLS

1
win32/common/libgstreamer.def
View file

@ -428,6 +428,7 @@ EXPORTS
gst_device_get_caps
gst_device_get_device_class
gst_device_get_display_name
gst_device_get_properties
gst_device_get_type
gst_device_has_classes
gst_device_has_classesv