/*
* Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* FUNCTION
* mlib_ImageConvVersion - Get Conv* funtions version
* 0 - "C" version
* 1 - "VIS" version
* 2 - "i386" version
* 3 - "MMX" version
*
* SYNOPSIS
* mlib_s32 mlib_ImageConvVersion(mlib_s32 m,
* mlib_s32 n,
* mlib_s32 scale,
* mlib_type type)
*
*/
#include "mlib_image.h"
/***************************************************************/
#define MAX_U8 8
#define MAX_S16 32
/***************************************************************/
mlib_s32 mlib_ImageConvVersion(mlib_s32 m,
mlib_s32 n,
mlib_s32 scale,
mlib_type type)
{
mlib_d64 dscale = 1.0 / (1 << scale); /* 16 < scale <= 31 */
if (type == MLIB_BYTE) {
if ((m * n * dscale * 32768.0 * 512.0) > MAX_U8)
return 0;
return 1;
}
else if ((type == MLIB_USHORT) || (type == MLIB_SHORT)) {
if ((m != 2) || (n != 2))
return 0;
if ((m * n * dscale * 32768.0 * 32768.0) > MAX_S16)
return 0;
return 1;
}
else
return 0;
}
/***************************************************************/