| /* |
| * 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; |
| } |
| |
| /***************************************************************/ |
