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/*
* Copyright (C) 2005 Christophe Fergeau
*
*
* The code contained in this file 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 file 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 code; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*
* iTunes and iPod are trademarks of Apple
*
* This product is not supported/written/published by Apple!
*
* $Id$
*/
#ifndef __ITDB_ENDIANNESS_H__
#define __ITDB_ENDIANNESS_H__
#include <glib.h>
#include "itdb.h"
#include "itdb_device.h"
#include "itdb_private.h"
#define DB_TO_CPU_GET(lower_case_type, upper_case_type) \
static inline lower_case_type \
get_##lower_case_type (lower_case_type val, guint byte_order) \
{ \
if (byte_order == G_BIG_ENDIAN) { \
return upper_case_type##_FROM_BE (val); \
} else if (byte_order == G_LITTLE_ENDIAN) { \
return upper_case_type##_FROM_LE (val); \
} else { \
g_assert_not_reached (); \
} \
return 0; /* never reached */ \
}
/*
#define DB_TO_CPU_GET_DB(lower_case_type, upper_case_type) \
DB_TO_CPU_GET(lower_case_type, upper_case_type) \
static inline lower_case_type \
get_##lower_case_type##_db (Itdb_iTunesDB *db, lower_case_type val) \
{ \
g_assert (db->device != NULL); \
return get_##lower_case_type (val, db->device->byte_order); \
}
*/
#define DB_TO_CPU_GET_DB(lower_case_type, upper_case_type) \
DB_TO_CPU_GET(lower_case_type, upper_case_type) \
static inline lower_case_type \
get_##lower_case_type##_db (Itdb_DB *db, lower_case_type val) \
{ \
g_assert (db_get_device(db) != NULL); \
return get_##lower_case_type (val, db_get_device(db)->byte_order); \
}
DB_TO_CPU_GET_DB(guint32, GUINT32)
DB_TO_CPU_GET_DB(gint32, GINT32)
DB_TO_CPU_GET_DB(gint16, GINT16)
DB_TO_CPU_GET_DB(gint64, GINT64)
/* OK, for 'normal' people an effective summary of what this file is
* doing:
*
* The following inline functions are defined:
*
* guint32 get_guint32 (guint32 val, guint byte_order);
* guint32 get_gint32 (gint32 val, guint byte_order);
* guint32 get_gint16 (gint16 val, guint byte_order);
* guint32 get_gint64 (gint64 val, guint byte_order);
* guint32 get_guint32_db (guint32 val, guint byte_order);
* guint32 get_gint32_db (gint32 val, guint byte_order);
* guint32 get_gint16_db (gint16 val, guint byte_order);
* guint32 get_gint64_db (gint64 val, guint byte_order);
*
* They are used to retrieve integer data from or store integer data
* to the iPod's databases which may use a different byte order
* (@byte_order) than the host system on which this library runs on.
*/
#endif
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