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author | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2006-08-19 03:12:28 +0000 |
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committer | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2006-08-19 03:12:28 +0000 |
commit | 1fd361a1ea06e44286c213ca1f814f49306fdc43 (patch) | |
tree | 64c8c96cf54d8718847339a403e5e67b922e8c3f /converter/other/jpeg2000/libjasper/jpc/jpc_mct.c | |
download | netpbm-mirror-1fd361a1ea06e44286c213ca1f814f49306fdc43.tar.gz netpbm-mirror-1fd361a1ea06e44286c213ca1f814f49306fdc43.tar.xz netpbm-mirror-1fd361a1ea06e44286c213ca1f814f49306fdc43.zip |
Create Subversion repository
git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@1 9d0c8265-081b-0410-96cb-a4ca84ce46f8
Diffstat (limited to 'converter/other/jpeg2000/libjasper/jpc/jpc_mct.c')
-rw-r--r-- | converter/other/jpeg2000/libjasper/jpc/jpc_mct.c | 337 |
1 files changed, 337 insertions, 0 deletions
diff --git a/converter/other/jpeg2000/libjasper/jpc/jpc_mct.c b/converter/other/jpeg2000/libjasper/jpc/jpc_mct.c new file mode 100644 index 00000000..7c16c3e5 --- /dev/null +++ b/converter/other/jpeg2000/libjasper/jpc/jpc_mct.c @@ -0,0 +1,337 @@ +/* + * 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 <assert.h> + +#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; +} |