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 /***************************************************************/