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/*
* gstvaapiparamspecs.c - GParamSpecs for some of our types
*
* Copyright (C) 2010-2011 Splitted-Desktop Systems
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/**
* SECTION:gstvaapiparamspecs
* @short_description: GParamSpecs for some of our types
*/
#include "sysdeps.h"
#include "gstvaapiparamspecs.h"
#include "gstvaapivalue.h"
/* --- GstVaapiParamSpecID --- */
static void
gst_vaapi_param_id_init(GParamSpec *pspec)
{
GST_VAAPI_PARAM_SPEC_ID(pspec)->default_value = GST_VAAPI_ID_NONE;
}
static void
gst_vaapi_param_id_set_default(GParamSpec *pspec, GValue *value)
{
gst_vaapi_value_set_id(value, GST_VAAPI_PARAM_SPEC_ID(pspec)->default_value);
}
static gboolean
gst_vaapi_param_id_validate(GParamSpec *pspec, GValue *value)
{
/* Return FALSE if everything is OK, otherwise TRUE */
return FALSE;
}
static gint
gst_vaapi_param_id_compare(
GParamSpec *pspec,
const GValue *value1,
const GValue *value2
)
{
const GstVaapiID v1 = gst_vaapi_value_get_id(value1);
const GstVaapiID v2 = gst_vaapi_value_get_id(value2);
return (v1 < v2 ? -1 : (v1 > v2 ? 1 : 0));
}
GType
gst_vaapi_param_spec_id_get_type(void)
{
static GType type;
if (G_UNLIKELY(type == 0)) {
static GParamSpecTypeInfo pspec_info = {
sizeof(GstVaapiParamSpecID), /* instance_size */
0, /* n_preallocs */
gst_vaapi_param_id_init, /* instance_init */
G_TYPE_INVALID, /* value_type */
NULL, /* finalize */
gst_vaapi_param_id_set_default, /* value_set_default */
gst_vaapi_param_id_validate, /* value_validate */
gst_vaapi_param_id_compare, /* values_cmp */
};
pspec_info.value_type = GST_VAAPI_TYPE_ID;
type = g_param_type_register_static("GstVaapiParamSpecID", &pspec_info);
}
return type;
}
/**
* gst_vaapi_param_spec_id:
* @name: canonical name of the property specified
* @nick: nick name for the property specified
* @blurb: description of the property specified
* @default_value: default value
* @flags: flags for the property specified
*
* This function creates an ID GParamSpec for use by #GstVaapiObject
* objects. This function is typically used in connection with
* g_object_class_install_property() in a GObjects's instance_init
* function.
*
* Return value: a newly created parameter specification
*/
GParamSpec *
gst_vaapi_param_spec_id(
const gchar *name,
const gchar *nick,
const gchar *blurb,
GstVaapiID default_value,
GParamFlags flags
)
{
GstVaapiParamSpecID *ispec;
GParamSpec *pspec;
GValue value = { 0, };
ispec = g_param_spec_internal(
GST_VAAPI_TYPE_PARAM_ID,
name,
nick,
blurb,
flags
);
if (!ispec)
return NULL;
ispec->default_value = default_value;
pspec = G_PARAM_SPEC(ispec);
/* Validate default value */
g_value_init(&value, GST_VAAPI_TYPE_ID);
gst_vaapi_value_set_id(&value, default_value);
if (gst_vaapi_param_id_validate(pspec, &value)) {
g_param_spec_ref(pspec);
g_param_spec_sink(pspec);
g_param_spec_unref(pspec);
pspec = NULL;
}
g_value_unset(&value);
return pspec;
}
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