| /* | |
| * Copyright (c) 2003, 2020, 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* functions 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) > MAX_U8) | |
| return 0; | |
| return 2; | |
| } | |
| else if ((type == MLIB_USHORT) || (type == MLIB_SHORT)) { | |
| if ((m * n * dscale * 32768.0 * 32768.0) > MAX_S16) | |
| return 0; | |
| return 2; | |
| } | |
| else | |
| return 0; | |
| } | |
| /***************************************************************/ |