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Diffstat (limited to 'converter/other/jpeg2000/libjasper/include/jasper/jas_fix.h')
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diff --git a/converter/other/jpeg2000/libjasper/include/jasper/jas_fix.h b/converter/other/jpeg2000/libjasper/include/jasper/jas_fix.h new file mode 100644 index 00000000..9599eb1c --- /dev/null +++ b/converter/other/jpeg2000/libjasper/include/jasper/jas_fix.h @@ -0,0 +1,406 @@ +/* + * 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 Software License + * + * IMAGE POWER JPEG-2000 PUBLIC LICENSE + * ************************************ + * + * GRANT: + * + * Permission is hereby granted, free of charge, to any person (the "User") + * obtaining a copy of this software and associated documentation, to deal + * in the JasPer Software without restriction, including without limitation + * the right to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the JasPer Software (in source and binary forms), + * and to permit persons to whom the JasPer Software is furnished to do so, + * provided further that the License Conditions below are met. + * + * License Conditions + * ****************** + * + * A. Redistributions of source code must retain the above copyright notice, + * and this list of conditions, and the following disclaimer. + * + * B. Redistributions in binary form must reproduce the above copyright + * notice, and this list of conditions, and the following disclaimer in + * the documentation and/or other materials provided with the distribution. + * + * C. Neither the name of Image Power, Inc. nor any other contributor + * (including, but not limited to, the University of British Columbia and + * Michael David Adams) may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * D. User agrees that it shall not commence any action against Image Power, + * Inc., the University of British Columbia, Michael David Adams, or any + * other contributors (collectively "Licensors") for infringement of any + * intellectual property rights ("IPR") held by the User in respect of any + * technology that User owns or has a right to license or sublicense and + * which is an element required in order to claim compliance with ISO/IEC + * 15444-1 (i.e., JPEG-2000 Part 1). "IPR" means all intellectual property + * rights worldwide arising under statutory or common law, and whether + * or not perfected, including, without limitation, all (i) patents and + * patent applications owned or licensable by User; (ii) rights associated + * with works of authorship including copyrights, copyright applications, + * copyright registrations, mask work rights, mask work applications, + * mask work registrations; (iii) rights relating to the protection of + * trade secrets and confidential information; (iv) any right analogous + * to those set forth in subsections (i), (ii), or (iii) and any other + * proprietary rights relating to intangible property (other than trademark, + * trade dress, or service mark rights); and (v) divisions, continuations, + * renewals, reissues and extensions of the foregoing (as and to the extent + * applicable) now existing, hereafter filed, issued or acquired. + * + * E. If User commences an infringement action against any Licensor(s) then + * such Licensor(s) shall have the right to terminate User's license and + * all sublicenses that have been granted hereunder by User to other parties. + * + * F. This software is for use only in hardware or software products that + * are compliant with ISO/IEC 15444-1 (i.e., JPEG-2000 Part 1). No license + * or right to this Software is granted for products that do not comply + * with ISO/IEC 15444-1. The JPEG-2000 Part 1 standard can be purchased + * from the ISO. + * + * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. + * NO USE OF THE JASPER SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER + * THIS DISCLAIMER. THE JASPER SOFTWARE IS PROVIDED BY THE LICENSORS AND + * CONTRIBUTORS UNDER THIS LICENSE ON AN ``AS-IS'' BASIS, WITHOUT WARRANTY + * OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, + * WARRANTIES THAT THE JASPER SOFTWARE IS FREE OF DEFECTS, IS MERCHANTABLE, + * IS FIT FOR A PARTICULAR PURPOSE OR IS NON-INFRINGING. THOSE INTENDING + * TO USE THE JASPER SOFTWARE OR MODIFICATIONS THEREOF FOR USE IN HARDWARE + * OR SOFTWARE PRODUCTS ARE ADVISED THAT THEIR USE MAY INFRINGE EXISTING + * PATENTS, COPYRIGHTS, TRADEMARKS, OR OTHER INTELLECTUAL PROPERTY RIGHTS. + * THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE JASPER SOFTWARE + * IS WITH THE USER. SHOULD ANY PART OF THE JASPER SOFTWARE PROVE DEFECTIVE + * IN ANY RESPECT, THE USER (AND NOT THE INITIAL DEVELOPERS, THE UNIVERSITY + * OF BRITISH COLUMBIA, IMAGE POWER, INC., MICHAEL DAVID ADAMS, OR ANY + * OTHER CONTRIBUTOR) SHALL ASSUME THE COST OF ANY NECESSARY SERVICING, + * REPAIR OR CORRECTION. UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, + * WHETHER TORT (INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE, SHALL THE + * INITIAL DEVELOPER, THE UNIVERSITY OF BRITISH COLUMBIA, IMAGE POWER, INC., + * MICHAEL DAVID ADAMS, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF THE + * JASPER SOFTWARE, OR ANY SUPPLIER OF ANY OF SUCH PARTIES, BE LIABLE TO + * THE USER OR ANY OTHER PERSON FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR + * CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT LIMITATION, + * DAMAGES FOR LOSS OF GOODWILL, WORK STOPPAGE, COMPUTER FAILURE OR + * MALFUNCTION, OR ANY AND ALL OTHER COMMERCIAL DAMAGES OR LOSSES, EVEN IF + * SUCH PARTY HAD BEEN INFORMED, OR OUGHT TO HAVE KNOWN, OF THE POSSIBILITY + * OF SUCH DAMAGES. THE JASPER SOFTWARE AND UNDERLYING TECHNOLOGY ARE NOT + * FAULT-TOLERANT AND ARE NOT DESIGNED, MANUFACTURED OR INTENDED FOR USE OR + * RESALE AS ON-LINE CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING + * FAIL-SAFE PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, + * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT + * LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE + * JASPER SOFTWARE OR UNDERLYING TECHNOLOGY OR PRODUCT COULD LEAD DIRECTLY + * TO DEATH, PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE + * ("HIGH RISK ACTIVITIES"). LICENSOR SPECIFICALLY DISCLAIMS ANY EXPRESS + * OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES. USER WILL NOT + * KNOWINGLY USE, DISTRIBUTE OR RESELL THE JASPER SOFTWARE OR UNDERLYING + * TECHNOLOGY OR PRODUCTS FOR HIGH RISK ACTIVITIES AND WILL ENSURE THAT ITS + * CUSTOMERS AND END-USERS OF ITS PRODUCTS ARE PROVIDED WITH A COPY OF THE + * NOTICE SPECIFIED IN THIS SECTION. + * + * __END_OF_JASPER_LICENSE__ + */ + +/* + * Fixed-Point Number Class + * + * $Id$ + */ + +#ifndef JAS_FIX_H +#define JAS_FIX_H + +/******************************************************************************\ +* Includes. +\******************************************************************************/ + +#include <stdio.h> +#include <stdlib.h> +#include <math.h> + +#include <jasper/jas_types.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/******************************************************************************\ +* Constants. +\******************************************************************************/ + +/* The representation of the value zero. */ +#define JAS_FIX_ZERO(fix_t, fracbits) \ + JAS_CAST(fix_t, 0) + +/* The representation of the value one. */ +#define JAS_FIX_ONE(fix_t, fracbits) \ + (JAS_CAST(fix_t, 1) << (fracbits)) + +/* The representation of the value one half. */ +#define JAS_FIX_HALF(fix_t, fracbits) \ + (JAS_CAST(fix_t, 1) << ((fracbits) - 1)) + +/******************************************************************************\ +* Conversion operations. +\******************************************************************************/ + +/* Convert an int to a fixed-point number. */ +#define JAS_INTTOFIX(fix_t, fracbits, x) \ + JAS_CAST(fix_t, (x) << (fracbits)) + +/* Convert a fixed-point number to an int. */ +#define JAS_FIXTOINT(fix_t, fracbits, x) \ + JAS_CAST(int, (x) >> (fracbits)) + +/* Convert a fixed-point number to a double. */ +#define JAS_FIXTODBL(fix_t, fracbits, x) \ + (JAS_CAST(double, x) / (JAS_CAST(fix_t, 1) << (fracbits))) + +/* Convert a double to a fixed-point number. */ +#define JAS_DBLTOFIX(fix_t, fracbits, x) \ + JAS_CAST(fix_t, ((x) * JAS_CAST(double, JAS_CAST(fix_t, 1) << (fracbits)))) + +/******************************************************************************\ +* Basic arithmetic operations. +* All other arithmetic operations are synthesized from these basic operations. +* There are three macros for each type of arithmetic operation. +* One macro always performs overflow/underflow checking, one never performs +* overflow/underflow checking, and one is generic with its behavior +* depending on compile-time flags. +* Only the generic macros should be invoked directly by application code. +\******************************************************************************/ + +/* Calculate the sum of two fixed-point numbers. */ +#if !defined(DEBUG_OVERFLOW) +#define JAS_FIX_ADD JAS_FIX_ADD_FAST +#else +#define JAS_FIX_ADD JAS_FIX_ADD_OFLOW +#endif + +/* Calculate the sum of two fixed-point numbers without overflow checking. */ +#define JAS_FIX_ADD_FAST(fix_t, fracbits, x, y) ((x) + (y)) + +/* Calculate the sum of two fixed-point numbers with overflow checking. */ +#define JAS_FIX_ADD_OFLOW(fix_t, fracbits, x, y) \ + ((x) >= 0) ? \ + (((y) >= 0) ? ((x) + (y) >= 0 || JAS_FIX_OFLOW(), (x) + (y)) : \ + ((x) + (y))) : \ + (((y) >= 0) ? ((x) + (y)) : ((x) + (y) < 0 || JAS_FIX_OFLOW(), \ + (x) + (y))) + +/* Calculate the product of two fixed-point numbers. */ +#if !defined(DEBUG_OVERFLOW) +#define JAS_FIX_MUL JAS_FIX_MUL_FAST +#else +#define JAS_FIX_MUL JAS_FIX_MUL_OFLOW +#endif + +/* Calculate the product of two fixed-point numbers without overflow + checking. */ +#define JAS_FIX_MUL_FAST(fix_t, fracbits, bigfix_t, x, y) \ + JAS_CAST(fix_t, (JAS_CAST(bigfix_t, x) * JAS_CAST(bigfix_t, y)) >> \ + (fracbits)) + +/* Calculate the product of two fixed-point numbers with overflow + checking. */ +#define JAS_FIX_MUL_OFLOW(fix_t, fracbits, bigfix_t, x, y) \ + ((JAS_CAST(bigfix_t, x) * JAS_CAST(bigfix_t, y) >> (fracbits)) == \ + JAS_CAST(fix_t, (JAS_CAST(bigfix_t, x) * JAS_CAST(bigfix_t, y) >> \ + (fracbits))) ? \ + JAS_CAST(fix_t, (JAS_CAST(bigfix_t, x) * JAS_CAST(bigfix_t, y) >> \ + (fracbits))) : JAS_FIX_OFLOW()) + +/* Calculate the product of a fixed-point number and an int. */ +#if !defined(DEBUG_OVERFLOW) +#define JAS_FIX_MULBYINT JAS_FIX_MULBYINT_FAST +#else +#define JAS_FIX_MULBYINT JAS_FIX_MULBYINT_OFLOW +#endif + +/* Calculate the product of a fixed-point number and an int without overflow + checking. */ +#define JAS_FIX_MULBYINT_FAST(fix_t, fracbits, x, y) \ + JAS_CAST(fix_t, ((x) * (y))) + +/* Calculate the product of a fixed-point number and an int with overflow + checking. */ +#define JAS_FIX_MULBYINT_OFLOW(fix_t, fracbits, x, y) \ + JAS_FIX_MULBYINT_FAST(fix_t, fracbits, x, y) + +/* Calculate the quotient of two fixed-point numbers. */ +#if !defined(DEBUG_OVERFLOW) +#define JAS_FIX_DIV JAS_FIX_DIV_FAST +#else +#define JAS_FIX_DIV JAS_FIX_DIV_UFLOW +#endif + +/* Calculate the quotient of two fixed-point numbers without underflow + checking. */ +#define JAS_FIX_DIV_FAST(fix_t, fracbits, bigfix_t, x, y) \ + JAS_CAST(fix_t, (JAS_CAST(bigfix_t, x) << (fracbits)) / (y)) + +/* Calculate the quotient of two fixed-point numbers with underflow + checking. */ +#define JAS_FIX_DIV_UFLOW(fix_t, fracbits, bigfix_t, x, y) \ + JAS_FIX_DIV_FAST(fix_t, fracbits, bigfix_t, x, y) + +/* Negate a fixed-point number. */ +#if !defined(DEBUG_OVERFLOW) +#define JAS_FIX_NEG JAS_FIX_NEG_FAST +#else +#define JAS_FIX_NEG JAS_FIX_NEG_OFLOW +#endif + +/* Negate a fixed-point number without overflow checking. */ +#define JAS_FIX_NEG_FAST(fix_t, fracbits, x) \ + (-(x)) + +/* Negate a fixed-point number with overflow checking. */ +/* Yes, overflow is actually possible for two's complement representations, + although highly unlikely to occur. */ +#define JAS_FIX_NEG_OFLOW(fix_t, fracbits, x) \ + (((x) < 0) ? (-(x) > 0 || JAS_FIX_OFLOW(), -(x)) : (-(x))) + +/* Perform an arithmetic shift left of a fixed-point number. */ +#if !defined(DEBUG_OVERFLOW) +#define JAS_FIX_ASL JAS_FIX_ASL_FAST +#else +#define JAS_FIX_ASL JAS_FIX_ASL_OFLOW +#endif + +/* Perform an arithmetic shift left of a fixed-point number without overflow + checking. */ +#define JAS_FIX_ASL_FAST(fix_t, fracbits, x, n) \ + ((x) << (n)) + +/* Perform an arithmetic shift left of a fixed-point number with overflow + checking. */ +#define JAS_FIX_ASL_OFLOW(fix_t, fracbits, x, n) \ + ((((x) << (n)) >> (n)) == (x) || JAS_FIX_OFLOW(), (x) << (n)) + +/* Perform an arithmetic shift right of a fixed-point number. */ +#if !defined(DEBUG_OVERFLOW) +#define JAS_FIX_ASR JAS_FIX_ASR_FAST +#else +#define JAS_FIX_ASR JAS_FIX_ASR_UFLOW +#endif + +/* Perform an arithmetic shift right of a fixed-point number without underflow + checking. */ +#define JAS_FIX_ASR_FAST(fix_t, fracbits, x, n) \ + ((x) >> (n)) + +/* Perform an arithmetic shift right of a fixed-point number with underflow + checking. */ +#define JAS_FIX_ASR_UFLOW(fix_t, fracbits, x, n) \ + JAS_FIX_ASR_FAST(fix_t, fracbits, x, n) + +/******************************************************************************\ +* Other basic arithmetic operations. +\******************************************************************************/ + +/* Calculate the difference between two fixed-point numbers. */ +#define JAS_FIX_SUB(fix_t, fracbits, x, y) \ + JAS_FIX_ADD(fix_t, fracbits, x, JAS_FIX_NEG(fix_t, fracbits, y)) + +/* Add one fixed-point number to another. */ +#define JAS_FIX_PLUSEQ(fix_t, fracbits, x, y) \ + ((x) = JAS_FIX_ADD(fix_t, fracbits, x, y)) + +/* Subtract one fixed-point number from another. */ +#define JAS_FIX_MINUSEQ(fix_t, fracbits, x, y) \ + ((x) = JAS_FIX_SUB(fix_t, fracbits, x, y)) + +/* Multiply one fixed-point number by another. */ +#define JAS_FIX_MULEQ(fix_t, fracbits, bigfix_t, x, y) \ + ((x) = JAS_FIX_MUL(fix_t, fracbits, bigfix_t, x, y)) + +/******************************************************************************\ +* Miscellaneous operations. +\******************************************************************************/ + +/* Calculate the absolute value of a fixed-point number. */ +#define JAS_FIX_ABS(fix_t, fracbits, x) \ + (((x) >= 0) ? (x) : (JAS_FIX_NEG(fix_t, fracbits, x))) + +/* Is a fixed-point number an integer? */ +#define JAS_FIX_ISINT(fix_t, fracbits, x) \ + (JAS_FIX_FLOOR(fix_t, fracbits, x) == (x)) + +/* Get the sign of a fixed-point number. */ +#define JAS_FIX_SGN(fix_t, fracbits, x) \ + ((x) >= 0 ? 1 : (-1)) + +/******************************************************************************\ +* Relational operations. +\******************************************************************************/ + +/* Compare two fixed-point numbers. */ +#define JAS_FIX_CMP(fix_t, fracbits, x, y) \ + ((x) > (y) ? 1 : (((x) == (y)) ? 0 : (-1))) + +/* Less than. */ +#define JAS_FIX_LT(fix_t, fracbits, x, y) \ + ((x) < (y)) + +/* Less than or equal. */ +#define JAS_FIX_LTE(fix_t, fracbits, x, y) \ + ((x) <= (y)) + +/* Greater than. */ +#define JAS_FIX_GT(fix_t, fracbits, x, y) \ + ((x) > (y)) + +/* Greater than or equal. */ +#define JAS_FIX_GTE(fix_t, fracbits, x, y) \ + ((x) >= (y)) + +/******************************************************************************\ +* Rounding functions. +\******************************************************************************/ + +/* Round a fixed-point number to the nearest integer. */ +#define JAS_FIX_ROUND(fix_t, fracbits, x) \ + (((x) < 0) ? JAS_FIX_FLOOR(fix_t, fracbits, JAS_FIX_ADD(fix_t, fracbits, \ + (x), JAS_FIX_HALF(fix_t, fracbits))) : \ + JAS_FIX_NEG(fix_t, fracbits, JAS_FIX_FLOOR(fix_t, fracbits, \ + JAS_FIX_ADD(fix_t, fracbits, (-(x)), JAS_FIX_HALF(fix_t, fracbits))))) + +/* Round a fixed-point number to the nearest integer in the direction of + negative infinity (i.e., the floor function). */ +#define JAS_FIX_FLOOR(fix_t, fracbits, x) \ + ((x) & (~((JAS_CAST(fix_t, 1) << (fracbits)) - 1))) + +/* Round a fixed-point number to the nearest integer in the direction + of zero. */ +#define JAS_FIX_TRUNC(fix_t, fracbits, x) \ + (((x) >= 0) ? JAS_FIX_FLOOR(fix_t, fracbits, x) : \ + JAS_FIX_CEIL(fix_t, fracbits, x)) + +/******************************************************************************\ +* The below macros are for internal library use only. Do not invoke them +* directly in application code. +\******************************************************************************/ + +/* Handle overflow. */ +#define JAS_FIX_OFLOW() \ + fprintf(stderr, "overflow error: file %s, line %d\n", __FILE__, __LINE__) + +/* Handle underflow. */ +#define JAS_FIX_UFLOW() \ + fprintf(stderr, "underflow error: file %s, line %d\n", __FILE__, __LINE__) + +#ifdef __cplusplus +} +#endif + +#endif |