/* * 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__ */ /* * Multicomponent Transform Code * * $Id$ */ /******************************************************************************\ * Includes. \******************************************************************************/ #include #include "jasper/jas_seq.h" #include "jpc_fix.h" #include "jpc_mct.h" /******************************************************************************\ * Code. \******************************************************************************/ /* Compute the forward RCT. */ void jpc_rct(jas_matrix_t *c0, jas_matrix_t *c1, jas_matrix_t *c2) { int numrows; int numcols; int i; int j; jpc_fix_t *c0p; jpc_fix_t *c1p; jpc_fix_t *c2p; numrows = jas_matrix_numrows(c0); numcols = jas_matrix_numcols(c0); /* All three matrices must have the same dimensions. */ assert(jas_matrix_numrows(c1) == numrows && jas_matrix_numcols(c1) == numcols && jas_matrix_numrows(c2) == numrows && jas_matrix_numcols(c2) == numcols); for (i = 0; i < numrows; i++) { c0p = jas_matrix_getref(c0, i, 0); c1p = jas_matrix_getref(c1, i, 0); c2p = jas_matrix_getref(c2, i, 0); for (j = numcols; j > 0; --j) { int r; int g; int b; int y; int u; int v; r = *c0p; g = *c1p; b = *c2p; y = (r + (g << 1) + b) >> 2; u = b - g; v = r - g; *c0p++ = y; *c1p++ = u; *c2p++ = v; } } } /* Compute the inverse RCT. */ void jpc_irct(jas_matrix_t *c0, jas_matrix_t *c1, jas_matrix_t *c2) { int numrows; int numcols; int i; int j; jpc_fix_t *c0p; jpc_fix_t *c1p; jpc_fix_t *c2p; numrows = jas_matrix_numrows(c0); numcols = jas_matrix_numcols(c0); /* All three matrices must have the same dimensions. */ assert(jas_matrix_numrows(c1) == numrows && jas_matrix_numcols(c1) == numcols && jas_matrix_numrows(c2) == numrows && jas_matrix_numcols(c2) == numcols); for (i = 0; i < numrows; i++) { c0p = jas_matrix_getref(c0, i, 0); c1p = jas_matrix_getref(c1, i, 0); c2p = jas_matrix_getref(c2, i, 0); for (j = numcols; j > 0; --j) { int r; int g; int b; int y; int u; int v; y = *c0p; u = *c1p; v = *c2p; g = y - ((u + v) >> 2); r = v + g; b = u + g; *c0p++ = r; *c1p++ = g; *c2p++ = b; } } } void jpc_ict(jas_matrix_t *c0, jas_matrix_t *c1, jas_matrix_t *c2) { int numrows; int numcols; int i; int j; jpc_fix_t r; jpc_fix_t g; jpc_fix_t b; jpc_fix_t y; jpc_fix_t u; jpc_fix_t v; jpc_fix_t *c0p; jpc_fix_t *c1p; jpc_fix_t *c2p; numrows = jas_matrix_numrows(c0); assert(jas_matrix_numrows(c1) == numrows && jas_matrix_numrows(c2) == numrows); numcols = jas_matrix_numcols(c0); assert(jas_matrix_numcols(c1) == numcols && jas_matrix_numcols(c2) == numcols); for (i = 0; i < numrows; ++i) { c0p = jas_matrix_getref(c0, i, 0); c1p = jas_matrix_getref(c1, i, 0); c2p = jas_matrix_getref(c2, i, 0); for (j = numcols; j > 0; --j) { r = *c0p; g = *c1p; b = *c2p; y = jpc_fix_add3(jpc_fix_mul(jpc_dbltofix(0.299), r), jpc_fix_mul(jpc_dbltofix(0.587), g), jpc_fix_mul(jpc_dbltofix(0.114), b)); u = jpc_fix_add3(jpc_fix_mul(jpc_dbltofix(-0.16875), r), jpc_fix_mul(jpc_dbltofix(-0.33126), g), jpc_fix_mul(jpc_dbltofix(0.5), b)); v = jpc_fix_add3(jpc_fix_mul(jpc_dbltofix(0.5), r), jpc_fix_mul(jpc_dbltofix(-0.41869), g), jpc_fix_mul(jpc_dbltofix(-0.08131), b)); *c0p++ = y; *c1p++ = u; *c2p++ = v; } } } void jpc_iict(jas_matrix_t *c0, jas_matrix_t *c1, jas_matrix_t *c2) { int numrows; int numcols; int i; int j; jpc_fix_t r; jpc_fix_t g; jpc_fix_t b; jpc_fix_t y; jpc_fix_t u; jpc_fix_t v; jpc_fix_t *c0p; jpc_fix_t *c1p; jpc_fix_t *c2p; numrows = jas_matrix_numrows(c0); assert(jas_matrix_numrows(c1) == numrows && jas_matrix_numrows(c2) == numrows); numcols = jas_matrix_numcols(c0); assert(jas_matrix_numcols(c1) == numcols && jas_matrix_numcols(c2) == numcols); for (i = 0; i < numrows; ++i) { c0p = jas_matrix_getref(c0, i, 0); c1p = jas_matrix_getref(c1, i, 0); c2p = jas_matrix_getref(c2, i, 0); for (j = numcols; j > 0; --j) { y = *c0p; u = *c1p; v = *c2p; r = jpc_fix_add(y, jpc_fix_mul(jpc_dbltofix(1.402), v)); g = jpc_fix_add3(y, jpc_fix_mul(jpc_dbltofix(-0.34413), u), jpc_fix_mul(jpc_dbltofix(-0.71414), v)); b = jpc_fix_add(y, jpc_fix_mul(jpc_dbltofix(1.772), u)); *c0p++ = r; *c1p++ = g; *c2p++ = b; } } } jpc_fix_t jpc_mct_getsynweight(int mctid, int cmptno) { jpc_fix_t synweight; switch (mctid) { case JPC_MCT_RCT: switch (cmptno) { case 0: synweight = jpc_dbltofix(sqrt(3.0)); break; case 1: synweight = jpc_dbltofix(sqrt(0.6875)); break; case 2: synweight = jpc_dbltofix(sqrt(0.6875)); break; } break; case JPC_MCT_ICT: switch (cmptno) { case 0: synweight = jpc_dbltofix(sqrt(3.0000)); break; case 1: synweight = jpc_dbltofix(sqrt(3.2584)); break; case 2: synweight = jpc_dbltofix(sqrt(2.4755)); break; } break; default: synweight = JPC_FIX_ONE; break; } return synweight; }