1 /*
   2  * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 
  27 /*
  28  * FUNCTION
  29  *      mlib_ImageConvVersion - Get Conv* funtions version
  30  *      0  - "C" version
  31  *      1  - "VIS" version
  32  *      2  - "i386" version
  33  *      3  - "MMX" version
  34  *
  35  * SYNOPSIS
  36  *      mlib_s32 mlib_ImageConvVersion(mlib_s32 m,
  37  *                                     mlib_s32 n,
  38  *                                     mlib_s32 scale,
  39  *                                     mlib_type type)
  40  *
  41  */
  42 
  43 #include "mlib_image.h"
  44 
  45 #define MAX_U8   8
  46 #define MAX_S16 32
  47 
  48 /***************************************************************/
  49 mlib_s32 mlib_ImageConvVersion(mlib_s32 m,
  50                                mlib_s32 n,
  51                                mlib_s32 scale,
  52                                mlib_type type)
  53 {
  54 #ifdef __sparc
  55   return 0;
  56 #else
  57   mlib_d64 dscale = 1.0 / (1 << scale); /* 16 < scale <= 31 */
  58 
  59   if (type == MLIB_BYTE) {
  60     if ((m * n * dscale * 32768.0) > MAX_U8)
  61       return 0;
  62     return 2;
  63   }
  64   else if ((type == MLIB_USHORT) || (type == MLIB_SHORT)) {
  65 
  66     if ((m * n * dscale * 32768.0 * 32768.0) > MAX_S16)
  67       return 0;
  68     return 2;
  69   }
  70   else
  71     return 0;
  72 #endif /* __sparc */
  73 }
  74 
  75 /***************************************************************/