diff options
Diffstat (limited to 'src/3rdparty/jasper/src/libjasper/jpc/jpc_fix.h')
| -rw-r--r-- | src/3rdparty/jasper/src/libjasper/jpc/jpc_fix.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/src/3rdparty/jasper/src/libjasper/jpc/jpc_fix.h b/src/3rdparty/jasper/src/libjasper/jpc/jpc_fix.h new file mode 100644 index 0000000..816605a --- /dev/null +++ b/src/3rdparty/jasper/src/libjasper/jpc/jpc_fix.h @@ -0,0 +1,144 @@ +/* + * Copyright (c) 1999-2000 Image Power, Inc. and the University of + * British Columbia. + * Copyright (c) 2001-2002 Michael David Adams. + * All rights reserved. + */ + +/* __START_OF_JASPER_LICENSE__ + * + * JasPer License Version 2.0 + * + * Copyright (c) 2001-2006 Michael David Adams + * Copyright (c) 1999-2000 Image Power, Inc. + * Copyright (c) 1999-2000 The University of British Columbia + * + * All rights reserved. + * + * Permission is hereby granted, free of charge, to any person (the + * "User") obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, and/or sell copies of the Software, and to permit + * persons to whom the Software is furnished to do so, subject to the + * following conditions: + * + * 1. The above copyright notices and this permission notice (which + * includes the disclaimer below) shall be included in all copies or + * substantial portions of the Software. + * + * 2. The name of a copyright holder shall not be used to endorse or + * promote products derived from the Software without specific prior + * written permission. + * + * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS + * LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER + * THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS + * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING + * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A + * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL + * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING + * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, + * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION + * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE + * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE + * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY. + * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS + * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL + * PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS + * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE + * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE + * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL + * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES, + * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL + * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH + * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH, + * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH + * RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY + * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES. + * + * __END_OF_JASPER_LICENSE__ + */ + +/* + * Fixed-Point Number Class + * + * $Id$ + */ + +#ifndef JPC_FIX_H +#define JPC_FIX_H + +/******************************************************************************\ +* Includes. +\******************************************************************************/ + +#include "jasper/jas_types.h" +#include "jasper/jas_fix.h" + +/******************************************************************************\ +* Basic parameters of the fixed-point type. +\******************************************************************************/ + +/* The integral type used to represent a fixed-point number. This + type must be capable of representing values from -(2^31) to 2^31-1 + (inclusive). */ +typedef int_fast32_t jpc_fix_t; + +/* The integral type used to respresent higher-precision intermediate results. + This type should be capable of representing values from -(2^63) to 2^63-1 + (inclusive). */ +typedef int_fast64_t jpc_fix_big_t; + +/* The number of bits used for the fractional part of a fixed-point number. */ +#define JPC_FIX_FRACBITS 13 + +/******************************************************************************\ +* Instantiations of the generic fixed-point number macros for the +* parameters given above. (Too bad C does not support templates, eh?) +* The purpose of these macros is self-evident if one examines the +* corresponding macros in the jasper/jas_fix.h header file. +\******************************************************************************/ + +#define JPC_FIX_ZERO JAS_FIX_ZERO(jpc_fix_t, JPC_FIX_FRACBITS) +#define JPC_FIX_ONE JAS_FIX_ONE(jpc_fix_t, JPC_FIX_FRACBITS) +#define JPC_FIX_HALF JAS_FIX_HALF(jpc_fix_t, JPC_FIX_FRACBITS) + +#define jpc_inttofix(x) JAS_INTTOFIX(jpc_fix_t, JPC_FIX_FRACBITS, x) +#define jpc_fixtoint(x) JAS_FIXTOINT(jpc_fix_t, JPC_FIX_FRACBITS, x) +#define jpc_fixtodbl(x) JAS_FIXTODBL(jpc_fix_t, JPC_FIX_FRACBITS, x) +#define jpc_dbltofix(x) JAS_DBLTOFIX(jpc_fix_t, JPC_FIX_FRACBITS, x) + +#define jpc_fix_add(x, y) JAS_FIX_ADD(jpc_fix_t, JPC_FIX_FRACBITS, x, y) +#define jpc_fix_sub(x, y) JAS_FIX_SUB(jpc_fix_t, JPC_FIX_FRACBITS, x, y) +#define jpc_fix_mul(x, y) \ + JAS_FIX_MUL(jpc_fix_t, JPC_FIX_FRACBITS, jpc_fix_big_t, x, y) +#define jpc_fix_mulbyint(x, y) \ + JAS_FIX_MULBYINT(jpc_fix_t, JPC_FIX_FRACBITS, x, y) +#define jpc_fix_div(x, y) \ + JAS_FIX_DIV(jpc_fix_t, JPC_FIX_FRACBITS, jpc_fix_big_t, x, y) +#define jpc_fix_neg(x) JAS_FIX_NEG(jpc_fix_t, JPC_FIX_FRACBITS, x) +#define jpc_fix_asl(x, n) JAS_FIX_ASL(jpc_fix_t, JPC_FIX_FRACBITS, x, n) +#define jpc_fix_asr(x, n) JAS_FIX_ASR(jpc_fix_t, JPC_FIX_FRACBITS, x, n) + +#define jpc_fix_pluseq(x, y) JAS_FIX_PLUSEQ(jpc_fix_t, JPC_FIX_FRACBITS, x, y) +#define jpc_fix_minuseq(x, y) JAS_FIX_MINUSEQ(jpc_fix_t, JPC_FIX_FRACBITS, x, y) +#define jpc_fix_muleq(x, y) \ + JAS_FIX_MULEQ(jpc_fix_t, JPC_FIX_FRACBITS, jpc_fix_big_t, x, y) + +#define jpc_fix_abs(x) JAS_FIX_ABS(jpc_fix_t, JPC_FIX_FRACBITS, x) +#define jpc_fix_isint(x) JAS_FIX_ISINT(jpc_fix_t, JPC_FIX_FRACBITS, x) +#define jpc_fix_sgn(x) JAS_FIX_SGN(jpc_fix_t, JPC_FIX_FRACBITS, x) +#define jpc_fix_round(x) JAS_FIX_ROUND(jpc_fix_t, JPC_FIX_FRACBITS, x) +#define jpc_fix_floor(x) JAS_FIX_FLOOR(jpc_fix_t, JPC_FIX_FRACBITS, x) +#define jpc_fix_trunc(x) JAS_FIX_TRUNC(jpc_fix_t, JPC_FIX_FRACBITS, x) + +/******************************************************************************\ +* Extra macros for convenience. +\******************************************************************************/ + +/* Compute the sum of three fixed-point numbers. */ +#define jpc_fix_add3(x, y, z) jpc_fix_add(jpc_fix_add(x, y), z) + +#endif |