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139 lines
4 KiB
C
139 lines
4 KiB
C
/*
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* gstvaapiparamspecs.c - GParamSpecs for some of our types
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*
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* gstreamer-vaapi (C) 2010 Splitted-Desktop Systems
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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/**
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* SECTION:gstvaapiparamspecs
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* @short_description: GParamSpecs for some of our types
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*/
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#include "config.h"
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#include "gstvaapiparamspecs.h"
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#include "gstvaapivalue.h"
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/* --- GstVaapiParamSpecID --- */
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static void
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gst_vaapi_param_id_init(GParamSpec *pspec)
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{
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GST_VAAPI_PARAM_SPEC_ID(pspec)->default_value = GST_VAAPI_ID_NONE;
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}
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static void
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gst_vaapi_param_id_set_default(GParamSpec *pspec, GValue *value)
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{
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gst_vaapi_value_set_id(value, GST_VAAPI_PARAM_SPEC_ID(pspec)->default_value);
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}
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static gboolean
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gst_vaapi_param_id_validate(GParamSpec *pspec, GValue *value)
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{
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/* Return FALSE if everything is OK, otherwise TRUE */
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return FALSE;
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}
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static gint
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gst_vaapi_param_id_compare(
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GParamSpec *pspec,
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const GValue *value1,
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const GValue *value2
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)
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{
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const GstVaapiID v1 = gst_vaapi_value_get_id(value1);
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const GstVaapiID v2 = gst_vaapi_value_get_id(value2);
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return (v1 < v2 ? -1 : (v1 > v2 ? 1 : 0));
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}
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GType
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gst_vaapi_param_spec_id_get_type(void)
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{
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static GType type;
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if (G_UNLIKELY(type == 0)) {
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static GParamSpecTypeInfo pspec_info = {
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sizeof(GstVaapiParamSpecID), /* instance_size */
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0, /* n_preallocs */
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gst_vaapi_param_id_init, /* instance_init */
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G_TYPE_INVALID, /* value_type */
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NULL, /* finalize */
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gst_vaapi_param_id_set_default, /* value_set_default */
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gst_vaapi_param_id_validate, /* value_validate */
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gst_vaapi_param_id_compare, /* values_cmp */
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};
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pspec_info.value_type = GST_VAAPI_TYPE_ID;
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type = g_param_type_register_static("GstVaapiParamSpecID", &pspec_info);
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}
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return type;
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}
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/**
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* gst_vaapi_param_spec_id:
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* @name: canonical name of the property specified
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* @nick: nick name for the property specified
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* @blurb: description of the property specified
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* @default_value: default value
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* @flags: flags for the property specified
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*
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* This function creates an ID GParamSpec for use by #GstVaapiObject
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* objects. This function is typically used in connection with
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* g_object_class_install_property() in a GObjects's instance_init
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* function.
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*
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* Return value: a newly created parameter specification
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*/
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GParamSpec *
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gst_vaapi_param_spec_id(
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const gchar *name,
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const gchar *nick,
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const gchar *blurb,
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GstVaapiID default_value,
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GParamFlags flags
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)
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{
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GstVaapiParamSpecID *ispec;
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GParamSpec *pspec;
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GValue value = { 0, };
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ispec = g_param_spec_internal(
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GST_VAAPI_TYPE_PARAM_ID,
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name,
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nick,
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blurb,
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flags
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);
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if (!ispec)
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return NULL;
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ispec->default_value = default_value;
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pspec = G_PARAM_SPEC(ispec);
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/* Validate default value */
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g_value_init(&value, GST_VAAPI_TYPE_ID);
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gst_vaapi_value_set_id(&value, default_value);
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if (gst_vaapi_param_id_validate(pspec, &value)) {
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g_param_spec_ref(pspec);
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g_param_spec_sink(pspec);
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g_param_spec_unref(pspec);
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pspec = NULL;
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}
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g_value_unset(&value);
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return pspec;
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}
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