gstreamer/gst-libs/gst/vaapi/gstvaapivalue.c
2011-06-14 13:54:07 +02:00

165 lines
4.7 KiB
C

/*
* gstvaapivalue.c - GValue implementations specific to VA-API
*
* gstreamer-vaapi (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:gstvaapivalue
* @short_description: GValue implementations specific to VA-API
*/
#include "config.h"
#include <gobject/gvaluecollector.h>
#include "gstvaapivalue.h"
static GTypeInfo gst_vaapi_type_info = {
0,
NULL,
NULL,
NULL,
NULL,
NULL,
0,
0,
NULL,
NULL,
};
static GTypeFundamentalInfo gst_vaapi_type_finfo = {
0
};
#define GST_VAAPI_TYPE_DEFINE(type, name) \
GType gst_vaapi_ ## type ## _get_type(void) \
{ \
static GType gst_vaapi_ ## type ## _type = 0; \
\
if (G_UNLIKELY(gst_vaapi_ ## type ## _type == 0)) { \
gst_vaapi_type_info.value_table = \
&gst_vaapi_ ## type ## _value_table; \
gst_vaapi_ ## type ## _type = g_type_register_fundamental( \
g_type_fundamental_next(), \
name, \
&gst_vaapi_type_info, \
&gst_vaapi_type_finfo, \
0 \
); \
} \
return gst_vaapi_ ## type ## _type; \
}
/* --- GstVaapiID --- */
#if GST_VAAPI_TYPE_ID_SIZE == 4
# define GST_VAAPI_VALUE_ID_(cvalue) ((cvalue).v_int)
# define GST_VAAPI_VALUE_ID_CFORMAT "i"
#elif GST_VAAPI_TYPE_ID_SIZE == 8
# define GST_VAAPI_VALUE_ID_(cvalue) ((cvalue).v_int64)
# define GST_VAAPI_VALUE_ID_CFORMAT "q"
#else
# error "unsupported GstVaapiID size"
#endif
#define GST_VAAPI_VALUE_ID(value) GST_VAAPI_VALUE_ID_((value)->data[0])
static void
gst_vaapi_value_id_init(GValue *value)
{
GST_VAAPI_VALUE_ID(value) = 0;
}
static void
gst_vaapi_value_id_copy(const GValue *src_value, GValue *dst_value)
{
GST_VAAPI_VALUE_ID(dst_value) = GST_VAAPI_VALUE_ID(src_value);
}
static gchar *
gst_vaapi_value_id_collect(
GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags
)
{
GST_VAAPI_VALUE_ID(value) = GST_VAAPI_VALUE_ID_(collect_values[0]);
return NULL;
}
static gchar *
gst_vaapi_value_id_lcopy(
const GValue *value,
guint n_collect_values,
GTypeCValue *collect_values,
guint collect_flags
)
{
GstVaapiID *id_p = collect_values[0].v_pointer;
if (!id_p)
return g_strdup_printf("value location for `%s' passed as NULL",
G_VALUE_TYPE_NAME(value));
*id_p = GST_VAAPI_VALUE_ID(value);
return NULL;
}
static const GTypeValueTable gst_vaapi_id_value_table = {
gst_vaapi_value_id_init,
NULL,
gst_vaapi_value_id_copy,
NULL,
GST_VAAPI_VALUE_ID_CFORMAT,
gst_vaapi_value_id_collect,
"p",
gst_vaapi_value_id_lcopy
};
GST_VAAPI_TYPE_DEFINE(id, "GstVaapiID");
/**
* gst_vaapi_value_get_id:
* @value: a GValue initialized to #GstVaapiID
*
* Gets the integer contained in @value.
*
* Return value: the integer contained in @value
*/
GstVaapiID
gst_vaapi_value_get_id(const GValue *value)
{
g_return_val_if_fail(GST_VAAPI_VALUE_HOLDS_ID(value), 0);
return GST_VAAPI_VALUE_ID(value);
}
/**
* gst_vaapi_value_set_id:
* @value: a GValue initialized to #GstVaapiID
* @id: a #GstVaapiID
*
* Sets the integer contained in @id to @value.
*/
void
gst_vaapi_value_set_id(GValue *value, GstVaapiID id)
{
g_return_if_fail(GST_VAAPI_VALUE_HOLDS_ID(value));
GST_VAAPI_VALUE_ID(value) = id;
}