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3144 lines
68 KiB
3144 lines
68 KiB
/* |
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* Copyright (c) 1999-2000 Image Power, Inc. and the University of |
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* British Columbia. |
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* Copyright (c) 2001-2003 Michael David Adams. |
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* All rights reserved. |
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*/ |
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|
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/* __START_OF_JASPER_LICENSE__ |
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* |
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* JasPer License Version 2.0 |
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* |
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* Copyright (c) 2001-2006 Michael David Adams |
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* Copyright (c) 1999-2000 Image Power, Inc. |
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* Copyright (c) 1999-2000 The University of British Columbia |
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* |
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* All rights reserved. |
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* |
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* Permission is hereby granted, free of charge, to any person (the |
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* "User") obtaining a copy of this software and associated documentation |
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* files (the "Software"), to deal in the Software without restriction, |
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* including without limitation the rights to use, copy, modify, merge, |
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* publish, distribute, and/or sell copies of the Software, and to permit |
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* persons to whom the Software is furnished to do so, subject to the |
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* following conditions: |
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* |
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* 1. The above copyright notices and this permission notice (which |
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* includes the disclaimer below) shall be included in all copies or |
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* substantial portions of the Software. |
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* |
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* 2. The name of a copyright holder shall not be used to endorse or |
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* promote products derived from the Software without specific prior |
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* written permission. |
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* |
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* THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS |
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* LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER |
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* THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS |
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* "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
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* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A |
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* PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO |
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL |
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* INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING |
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* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, |
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION |
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE |
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* PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE |
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* THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY. |
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* EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS |
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* BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL |
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* PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS |
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* GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE |
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* ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE |
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* IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL |
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* SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES, |
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* AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL |
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* SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH |
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* THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH, |
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* PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH |
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* RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY |
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* EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES. |
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* |
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* __END_OF_JASPER_LICENSE__ |
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*/ |
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|
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/* |
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* Quadrature Mirror-Image Filter Bank (QMFB) Library |
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* |
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* $Id: jpc_qmfb.c,v 1.2 2008-05-26 09:40:52 vp153 Exp $ |
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*/ |
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/******************************************************************************\ |
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* |
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\******************************************************************************/ |
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|
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#undef WT_LENONE /* This is not needed due to normalization. */ |
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#define WT_DOSCALE |
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/******************************************************************************\ |
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* Includes. |
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\******************************************************************************/ |
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#include <assert.h> |
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#include "jasper/jas_fix.h" |
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#include "jasper/jas_malloc.h" |
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#include "jasper/jas_math.h" |
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#include "jpc_qmfb.h" |
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#include "jpc_tsfb.h" |
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#include "jpc_math.h" |
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/******************************************************************************\ |
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* |
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\******************************************************************************/ |
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#define QMFB_SPLITBUFSIZE 4096 |
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#define QMFB_JOINBUFSIZE 4096 |
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|
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int jpc_ft_analyze(jpc_fix_t *a, int xstart, int ystart, int width, int height, |
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int stride); |
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int jpc_ft_synthesize(int *a, int xstart, int ystart, int width, int height, |
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int stride); |
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int jpc_ns_analyze(jpc_fix_t *a, int xstart, int ystart, int width, int height, |
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int stride); |
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int jpc_ns_synthesize(jpc_fix_t *a, int xstart, int ystart, int width, |
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int height, int stride); |
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|
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void jpc_ft_fwdlift_row(jpc_fix_t *a, int numcols, int parity); |
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void jpc_ft_fwdlift_col(jpc_fix_t *a, int numrows, int stride, |
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int parity); |
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void jpc_ft_fwdlift_colgrp(jpc_fix_t *a, int numrows, int stride, |
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int parity); |
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void jpc_ft_fwdlift_colres(jpc_fix_t *a, int numrows, int numcols, |
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int stride, int parity); |
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void jpc_ft_invlift_row(jpc_fix_t *a, int numcols, int parity); |
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void jpc_ft_invlift_col(jpc_fix_t *a, int numrows, int stride, |
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int parity); |
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void jpc_ft_invlift_colgrp(jpc_fix_t *a, int numrows, int stride, |
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int parity); |
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void jpc_ft_invlift_colres(jpc_fix_t *a, int numrows, int numcols, |
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int stride, int parity); |
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|
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void jpc_ns_fwdlift_row(jpc_fix_t *a, int numcols, int parity); |
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void jpc_ns_fwdlift_colgrp(jpc_fix_t *a, int numrows, int stride, int parity); |
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void jpc_ns_fwdlift_colres(jpc_fix_t *a, int numrows, int numcols, int stride, |
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int parity); |
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void jpc_ns_invlift_row(jpc_fix_t *a, int numcols, int parity); |
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void jpc_ns_invlift_colgrp(jpc_fix_t *a, int numrows, int stride, int parity); |
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void jpc_ns_invlift_colres(jpc_fix_t *a, int numrows, int numcols, int stride, |
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int parity); |
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|
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void jpc_qmfb_split_row(jpc_fix_t *a, int numcols, int parity); |
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void jpc_qmfb_split_col(jpc_fix_t *a, int numrows, int stride, int parity); |
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void jpc_qmfb_split_colgrp(jpc_fix_t *a, int numrows, int stride, int parity); |
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void jpc_qmfb_split_colres(jpc_fix_t *a, int numrows, int numcols, int stride, |
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int parity); |
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|
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void jpc_qmfb_join_row(jpc_fix_t *a, int numcols, int parity); |
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void jpc_qmfb_join_col(jpc_fix_t *a, int numrows, int stride, int parity); |
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void jpc_qmfb_join_colgrp(jpc_fix_t *a, int numrows, int stride, int parity); |
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void jpc_qmfb_join_colres(jpc_fix_t *a, int numrows, int numcols, int stride, |
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int parity); |
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|
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double jpc_ft_lpenergywts[32] = { |
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1.2247448713915889, |
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1.6583123951776999, |
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2.3184046238739260, |
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3.2691742076555053, |
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4.6199296531440819, |
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6.5323713152269596, |
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9.2377452606141937, |
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13.0639951297449581, |
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18.4752262333915667, |
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26.1278968190610392, |
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36.9504194305524791, |
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52.2557819580462777, |
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73.9008347315741645, |
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104.5115624560829133, |
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147.8016689469569656, |
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209.0231247296646018, |
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295.6033378293900000, |
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418.0462494347059419, |
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591.2066756503630813, |
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836.0924988714708661, |
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/* approximations */ |
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836.0924988714708661, |
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836.0924988714708661, |
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836.0924988714708661, |
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836.0924988714708661, |
|
836.0924988714708661, |
|
836.0924988714708661, |
|
836.0924988714708661, |
|
836.0924988714708661, |
|
836.0924988714708661, |
|
836.0924988714708661, |
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836.0924988714708661, |
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836.0924988714708661 |
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}; |
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|
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double jpc_ft_hpenergywts[32] = { |
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0.8477912478906585, |
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0.9601432184835760, |
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1.2593401049756179, |
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1.7444107171191079, |
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2.4538713036750726, |
|
3.4656517695088755, |
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4.8995276398597856, |
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6.9283970402160842, |
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9.7980274940131444, |
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13.8564306871112652, |
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19.5959265076535587, |
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27.7128159494245487, |
|
39.1918369552045860, |
|
55.4256262207444053, |
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78.3836719028959124, |
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110.8512517317256822, |
|
156.7673435548526868, |
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221.7025033739244293, |
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313.5346870787551552, |
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443.4050067351659550, |
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/* approximations */ |
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443.4050067351659550, |
|
443.4050067351659550, |
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443.4050067351659550, |
|
443.4050067351659550, |
|
443.4050067351659550, |
|
443.4050067351659550, |
|
443.4050067351659550, |
|
443.4050067351659550, |
|
443.4050067351659550, |
|
443.4050067351659550, |
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443.4050067351659550, |
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443.4050067351659550 |
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}; |
|
|
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double jpc_ns_lpenergywts[32] = { |
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1.4021081679297411, |
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2.0303718560817923, |
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2.9011625562785555, |
|
4.1152851751758002, |
|
5.8245108637728071, |
|
8.2387599345725171, |
|
11.6519546479210838, |
|
16.4785606470644375, |
|
23.3042776444606794, |
|
32.9572515613740435, |
|
46.6086013487782793, |
|
65.9145194076860861, |
|
93.2172084551803977, |
|
131.8290408510004283, |
|
186.4344176300625691, |
|
263.6580819564562148, |
|
372.8688353500955373, |
|
527.3161639447193920, |
|
745.7376707114038936, |
|
1054.6323278917823245, |
|
/* approximations follow */ |
|
1054.6323278917823245, |
|
1054.6323278917823245, |
|
1054.6323278917823245, |
|
1054.6323278917823245, |
|
1054.6323278917823245, |
|
1054.6323278917823245, |
|
1054.6323278917823245, |
|
1054.6323278917823245, |
|
1054.6323278917823245, |
|
1054.6323278917823245, |
|
1054.6323278917823245, |
|
1054.6323278917823245 |
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}; |
|
|
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double jpc_ns_hpenergywts[32] = { |
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1.4425227650161456, |
|
1.9669426082455688, |
|
2.8839248082788891, |
|
4.1475208393432981, |
|
5.8946497530677817, |
|
8.3471789178590949, |
|
11.8086046551047463, |
|
16.7012780415647804, |
|
23.6196657032246620, |
|
33.4034255108592362, |
|
47.2396388881632632, |
|
66.8069597416714061, |
|
94.4793162154500692, |
|
133.6139330736999113, |
|
188.9586372358249378, |
|
267.2278678461869390, |
|
377.9172750722391356, |
|
534.4557359047058753, |
|
755.8345502191498326, |
|
1068.9114718353569060, |
|
/* approximations follow */ |
|
1068.9114718353569060, |
|
1068.9114718353569060, |
|
1068.9114718353569060, |
|
1068.9114718353569060, |
|
1068.9114718353569060, |
|
1068.9114718353569060, |
|
1068.9114718353569060, |
|
1068.9114718353569060, |
|
1068.9114718353569060, |
|
1068.9114718353569060, |
|
1068.9114718353569060 |
|
}; |
|
|
|
jpc_qmfb2d_t jpc_ft_qmfb2d = { |
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jpc_ft_analyze, |
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jpc_ft_synthesize, |
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jpc_ft_lpenergywts, |
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jpc_ft_hpenergywts |
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}; |
|
|
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jpc_qmfb2d_t jpc_ns_qmfb2d = { |
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jpc_ns_analyze, |
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jpc_ns_synthesize, |
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jpc_ns_lpenergywts, |
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jpc_ns_hpenergywts |
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}; |
|
|
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/******************************************************************************\ |
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* generic |
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\******************************************************************************/ |
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|
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void jpc_qmfb_split_row(jpc_fix_t *a, int numcols, int parity) |
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{ |
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|
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int bufsize = JPC_CEILDIVPOW2(numcols, 1); |
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#if !defined(HAVE_VLA) |
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jpc_fix_t splitbuf[QMFB_SPLITBUFSIZE]; |
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#else |
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jpc_fix_t splitbuf[bufsize]; |
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#endif |
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jpc_fix_t *buf = splitbuf; |
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register jpc_fix_t *srcptr; |
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register jpc_fix_t *dstptr; |
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register int n; |
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register int m; |
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int hstartcol; |
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|
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#if !defined(HAVE_VLA) |
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/* Get a buffer. */ |
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if (bufsize > QMFB_SPLITBUFSIZE) { |
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if (!(buf = jas_alloc2(bufsize, sizeof(jpc_fix_t)))) { |
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/* We have no choice but to commit suicide in this case. */ |
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abort(); |
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} |
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} |
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#endif |
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|
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if (numcols >= 2) { |
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hstartcol = (numcols + 1 - parity) >> 1; |
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m = (parity) ? hstartcol : (numcols - hstartcol); |
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/* Save the samples destined for the highpass channel. */ |
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n = m; |
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dstptr = buf; |
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srcptr = &a[1 - parity]; |
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while (n-- > 0) { |
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*dstptr = *srcptr; |
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++dstptr; |
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srcptr += 2; |
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} |
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/* Copy the appropriate samples into the lowpass channel. */ |
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dstptr = &a[1 - parity]; |
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srcptr = &a[2 - parity]; |
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n = numcols - m - (!parity); |
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while (n-- > 0) { |
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*dstptr = *srcptr; |
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++dstptr; |
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srcptr += 2; |
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} |
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/* Copy the saved samples into the highpass channel. */ |
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dstptr = &a[hstartcol]; |
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srcptr = buf; |
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n = m; |
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while (n-- > 0) { |
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*dstptr = *srcptr; |
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++dstptr; |
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++srcptr; |
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} |
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} |
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|
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#if !defined(HAVE_VLA) |
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/* If the split buffer was allocated on the heap, free this memory. */ |
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if (buf != splitbuf) { |
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jas_free(buf); |
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} |
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#endif |
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|
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} |
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|
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void jpc_qmfb_split_col(jpc_fix_t *a, int numrows, int stride, |
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int parity) |
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{ |
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|
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int bufsize = JPC_CEILDIVPOW2(numrows, 1); |
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#if !defined(HAVE_VLA) |
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jpc_fix_t splitbuf[QMFB_SPLITBUFSIZE]; |
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#else |
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jpc_fix_t splitbuf[bufsize]; |
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#endif |
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jpc_fix_t *buf = splitbuf; |
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register jpc_fix_t *srcptr; |
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register jpc_fix_t *dstptr; |
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register int n; |
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register int m; |
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int hstartcol; |
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|
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#if !defined(HAVE_VLA) |
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/* Get a buffer. */ |
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if (bufsize > QMFB_SPLITBUFSIZE) { |
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if (!(buf = jas_alloc2(bufsize, sizeof(jpc_fix_t)))) { |
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/* We have no choice but to commit suicide in this case. */ |
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abort(); |
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} |
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} |
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#endif |
|
|
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if (numrows >= 2) { |
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hstartcol = (numrows + 1 - parity) >> 1; |
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m = (parity) ? hstartcol : (numrows - hstartcol); |
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/* Save the samples destined for the highpass channel. */ |
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n = m; |
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dstptr = buf; |
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srcptr = &a[(1 - parity) * stride]; |
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while (n-- > 0) { |
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*dstptr = *srcptr; |
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++dstptr; |
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srcptr += stride << 1; |
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} |
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/* Copy the appropriate samples into the lowpass channel. */ |
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dstptr = &a[(1 - parity) * stride]; |
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srcptr = &a[(2 - parity) * stride]; |
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n = numrows - m - (!parity); |
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while (n-- > 0) { |
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*dstptr = *srcptr; |
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dstptr += stride; |
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srcptr += stride << 1; |
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} |
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/* Copy the saved samples into the highpass channel. */ |
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dstptr = &a[hstartcol * stride]; |
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srcptr = buf; |
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n = m; |
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while (n-- > 0) { |
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*dstptr = *srcptr; |
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dstptr += stride; |
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++srcptr; |
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} |
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} |
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|
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#if !defined(HAVE_VLA) |
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/* If the split buffer was allocated on the heap, free this memory. */ |
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if (buf != splitbuf) { |
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jas_free(buf); |
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} |
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#endif |
|
|
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} |
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|
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void jpc_qmfb_split_colgrp(jpc_fix_t *a, int numrows, int stride, |
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int parity) |
|
{ |
|
|
|
int bufsize = JPC_CEILDIVPOW2(numrows, 1); |
|
#if !defined(HAVE_VLA) |
|
jpc_fix_t splitbuf[QMFB_SPLITBUFSIZE * JPC_QMFB_COLGRPSIZE]; |
|
#else |
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jpc_fix_t splitbuf[bufsize * JPC_QMFB_COLGRPSIZE]; |
|
#endif |
|
jpc_fix_t *buf = splitbuf; |
|
jpc_fix_t *srcptr; |
|
jpc_fix_t *dstptr; |
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register jpc_fix_t *srcptr2; |
|
register jpc_fix_t *dstptr2; |
|
register int n; |
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register int i; |
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int m; |
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int hstartcol; |
|
|
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#if !defined(HAVE_VLA) |
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/* Get a buffer. */ |
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if (bufsize > QMFB_SPLITBUFSIZE) { |
|
if (!(buf = jas_alloc2(bufsize, sizeof(jpc_fix_t)))) { |
|
/* We have no choice but to commit suicide in this case. */ |
|
abort(); |
|
} |
|
} |
|
#endif |
|
|
|
if (numrows >= 2) { |
|
hstartcol = (numrows + 1 - parity) >> 1; |
|
m = (parity) ? hstartcol : (numrows - hstartcol); |
|
/* Save the samples destined for the highpass channel. */ |
|
n = m; |
|
dstptr = buf; |
|
srcptr = &a[(1 - parity) * stride]; |
|
while (n-- > 0) { |
|
dstptr2 = dstptr; |
|
srcptr2 = srcptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
*dstptr2 = *srcptr2; |
|
++dstptr2; |
|
++srcptr2; |
|
} |
|
dstptr += JPC_QMFB_COLGRPSIZE; |
|
srcptr += stride << 1; |
|
} |
|
/* Copy the appropriate samples into the lowpass channel. */ |
|
dstptr = &a[(1 - parity) * stride]; |
|
srcptr = &a[(2 - parity) * stride]; |
|
n = numrows - m - (!parity); |
|
while (n-- > 0) { |
|
dstptr2 = dstptr; |
|
srcptr2 = srcptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
*dstptr2 = *srcptr2; |
|
++dstptr2; |
|
++srcptr2; |
|
} |
|
dstptr += stride; |
|
srcptr += stride << 1; |
|
} |
|
/* Copy the saved samples into the highpass channel. */ |
|
dstptr = &a[hstartcol * stride]; |
|
srcptr = buf; |
|
n = m; |
|
while (n-- > 0) { |
|
dstptr2 = dstptr; |
|
srcptr2 = srcptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
*dstptr2 = *srcptr2; |
|
++dstptr2; |
|
++srcptr2; |
|
} |
|
dstptr += stride; |
|
srcptr += JPC_QMFB_COLGRPSIZE; |
|
} |
|
} |
|
|
|
#if !defined(HAVE_VLA) |
|
/* If the split buffer was allocated on the heap, free this memory. */ |
|
if (buf != splitbuf) { |
|
jas_free(buf); |
|
} |
|
#endif |
|
|
|
} |
|
|
|
void jpc_qmfb_split_colres(jpc_fix_t *a, int numrows, int numcols, |
|
int stride, int parity) |
|
{ |
|
|
|
int bufsize = JPC_CEILDIVPOW2(numrows, 1); |
|
#if !defined(HAVE_VLA) |
|
jpc_fix_t splitbuf[QMFB_SPLITBUFSIZE * JPC_QMFB_COLGRPSIZE]; |
|
#else |
|
jpc_fix_t splitbuf[bufsize * numcols]; |
|
#endif |
|
jpc_fix_t *buf = splitbuf; |
|
jpc_fix_t *srcptr; |
|
jpc_fix_t *dstptr; |
|
register jpc_fix_t *srcptr2; |
|
register jpc_fix_t *dstptr2; |
|
register int n; |
|
register int i; |
|
int m; |
|
int hstartcol; |
|
|
|
#if !defined(HAVE_VLA) |
|
/* Get a buffer. */ |
|
if (bufsize > QMFB_SPLITBUFSIZE) { |
|
if (!(buf = jas_alloc2(bufsize, sizeof(jpc_fix_t)))) { |
|
/* We have no choice but to commit suicide in this case. */ |
|
abort(); |
|
} |
|
} |
|
#endif |
|
|
|
if (numrows >= 2) { |
|
hstartcol = (numrows + 1 - parity) >> 1; |
|
m = (parity) ? hstartcol : (numrows - hstartcol); |
|
/* Save the samples destined for the highpass channel. */ |
|
n = m; |
|
dstptr = buf; |
|
srcptr = &a[(1 - parity) * stride]; |
|
while (n-- > 0) { |
|
dstptr2 = dstptr; |
|
srcptr2 = srcptr; |
|
for (i = 0; i < numcols; ++i) { |
|
*dstptr2 = *srcptr2; |
|
++dstptr2; |
|
++srcptr2; |
|
} |
|
dstptr += numcols; |
|
srcptr += stride << 1; |
|
} |
|
/* Copy the appropriate samples into the lowpass channel. */ |
|
dstptr = &a[(1 - parity) * stride]; |
|
srcptr = &a[(2 - parity) * stride]; |
|
n = numrows - m - (!parity); |
|
while (n-- > 0) { |
|
dstptr2 = dstptr; |
|
srcptr2 = srcptr; |
|
for (i = 0; i < numcols; ++i) { |
|
*dstptr2 = *srcptr2; |
|
++dstptr2; |
|
++srcptr2; |
|
} |
|
dstptr += stride; |
|
srcptr += stride << 1; |
|
} |
|
/* Copy the saved samples into the highpass channel. */ |
|
dstptr = &a[hstartcol * stride]; |
|
srcptr = buf; |
|
n = m; |
|
while (n-- > 0) { |
|
dstptr2 = dstptr; |
|
srcptr2 = srcptr; |
|
for (i = 0; i < numcols; ++i) { |
|
*dstptr2 = *srcptr2; |
|
++dstptr2; |
|
++srcptr2; |
|
} |
|
dstptr += stride; |
|
srcptr += numcols; |
|
} |
|
} |
|
|
|
#if !defined(HAVE_VLA) |
|
/* If the split buffer was allocated on the heap, free this memory. */ |
|
if (buf != splitbuf) { |
|
jas_free(buf); |
|
} |
|
#endif |
|
|
|
} |
|
|
|
void jpc_qmfb_join_row(jpc_fix_t *a, int numcols, int parity) |
|
{ |
|
|
|
int bufsize = JPC_CEILDIVPOW2(numcols, 1); |
|
#if !defined(HAVE_VLA) |
|
jpc_fix_t joinbuf[QMFB_JOINBUFSIZE]; |
|
#else |
|
jpc_fix_t joinbuf[bufsize]; |
|
#endif |
|
jpc_fix_t *buf = joinbuf; |
|
register jpc_fix_t *srcptr; |
|
register jpc_fix_t *dstptr; |
|
register int n; |
|
int hstartcol; |
|
|
|
#if !defined(HAVE_VLA) |
|
/* Allocate memory for the join buffer from the heap. */ |
|
if (bufsize > QMFB_JOINBUFSIZE) { |
|
if (!(buf = jas_alloc2(bufsize, sizeof(jpc_fix_t)))) { |
|
/* We have no choice but to commit suicide. */ |
|
abort(); |
|
} |
|
} |
|
#endif |
|
|
|
hstartcol = (numcols + 1 - parity) >> 1; |
|
|
|
/* Save the samples from the lowpass channel. */ |
|
n = hstartcol; |
|
srcptr = &a[0]; |
|
dstptr = buf; |
|
while (n-- > 0) { |
|
*dstptr = *srcptr; |
|
++srcptr; |
|
++dstptr; |
|
} |
|
/* Copy the samples from the highpass channel into place. */ |
|
srcptr = &a[hstartcol]; |
|
dstptr = &a[1 - parity]; |
|
n = numcols - hstartcol; |
|
while (n-- > 0) { |
|
*dstptr = *srcptr; |
|
dstptr += 2; |
|
++srcptr; |
|
} |
|
/* Copy the samples from the lowpass channel into place. */ |
|
srcptr = buf; |
|
dstptr = &a[parity]; |
|
n = hstartcol; |
|
while (n-- > 0) { |
|
*dstptr = *srcptr; |
|
dstptr += 2; |
|
++srcptr; |
|
} |
|
|
|
#if !defined(HAVE_VLA) |
|
/* If the join buffer was allocated on the heap, free this memory. */ |
|
if (buf != joinbuf) { |
|
jas_free(buf); |
|
} |
|
#endif |
|
|
|
} |
|
|
|
void jpc_qmfb_join_col(jpc_fix_t *a, int numrows, int stride, |
|
int parity) |
|
{ |
|
|
|
int bufsize = JPC_CEILDIVPOW2(numrows, 1); |
|
#if !defined(HAVE_VLA) |
|
jpc_fix_t joinbuf[QMFB_JOINBUFSIZE]; |
|
#else |
|
jpc_fix_t joinbuf[bufsize]; |
|
#endif |
|
jpc_fix_t *buf = joinbuf; |
|
register jpc_fix_t *srcptr; |
|
register jpc_fix_t *dstptr; |
|
register int n; |
|
int hstartcol; |
|
|
|
#if !defined(HAVE_VLA) |
|
/* Allocate memory for the join buffer from the heap. */ |
|
if (bufsize > QMFB_JOINBUFSIZE) { |
|
if (!(buf = jas_alloc2(bufsize, sizeof(jpc_fix_t)))) { |
|
/* We have no choice but to commit suicide. */ |
|
abort(); |
|
} |
|
} |
|
#endif |
|
|
|
hstartcol = (numrows + 1 - parity) >> 1; |
|
|
|
/* Save the samples from the lowpass channel. */ |
|
n = hstartcol; |
|
srcptr = &a[0]; |
|
dstptr = buf; |
|
while (n-- > 0) { |
|
*dstptr = *srcptr; |
|
srcptr += stride; |
|
++dstptr; |
|
} |
|
/* Copy the samples from the highpass channel into place. */ |
|
srcptr = &a[hstartcol * stride]; |
|
dstptr = &a[(1 - parity) * stride]; |
|
n = numrows - hstartcol; |
|
while (n-- > 0) { |
|
*dstptr = *srcptr; |
|
dstptr += 2 * stride; |
|
srcptr += stride; |
|
} |
|
/* Copy the samples from the lowpass channel into place. */ |
|
srcptr = buf; |
|
dstptr = &a[parity * stride]; |
|
n = hstartcol; |
|
while (n-- > 0) { |
|
*dstptr = *srcptr; |
|
dstptr += 2 * stride; |
|
++srcptr; |
|
} |
|
|
|
#if !defined(HAVE_VLA) |
|
/* If the join buffer was allocated on the heap, free this memory. */ |
|
if (buf != joinbuf) { |
|
jas_free(buf); |
|
} |
|
#endif |
|
|
|
} |
|
|
|
void jpc_qmfb_join_colgrp(jpc_fix_t *a, int numrows, int stride, |
|
int parity) |
|
{ |
|
|
|
int bufsize = JPC_CEILDIVPOW2(numrows, 1); |
|
#if !defined(HAVE_VLA) |
|
jpc_fix_t joinbuf[QMFB_JOINBUFSIZE * JPC_QMFB_COLGRPSIZE]; |
|
#else |
|
jpc_fix_t joinbuf[bufsize * JPC_QMFB_COLGRPSIZE]; |
|
#endif |
|
jpc_fix_t *buf = joinbuf; |
|
jpc_fix_t *srcptr; |
|
jpc_fix_t *dstptr; |
|
register jpc_fix_t *srcptr2; |
|
register jpc_fix_t *dstptr2; |
|
register int n; |
|
register int i; |
|
int hstartcol; |
|
|
|
#if !defined(HAVE_VLA) |
|
/* Allocate memory for the join buffer from the heap. */ |
|
if (bufsize > QMFB_JOINBUFSIZE) { |
|
if (!(buf = jas_alloc2(bufsize, JPC_QMFB_COLGRPSIZE * sizeof(jpc_fix_t)))) { |
|
/* We have no choice but to commit suicide. */ |
|
abort(); |
|
} |
|
} |
|
#endif |
|
|
|
hstartcol = (numrows + 1 - parity) >> 1; |
|
|
|
/* Save the samples from the lowpass channel. */ |
|
n = hstartcol; |
|
srcptr = &a[0]; |
|
dstptr = buf; |
|
while (n-- > 0) { |
|
dstptr2 = dstptr; |
|
srcptr2 = srcptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
*dstptr2 = *srcptr2; |
|
++dstptr2; |
|
++srcptr2; |
|
} |
|
srcptr += stride; |
|
dstptr += JPC_QMFB_COLGRPSIZE; |
|
} |
|
/* Copy the samples from the highpass channel into place. */ |
|
srcptr = &a[hstartcol * stride]; |
|
dstptr = &a[(1 - parity) * stride]; |
|
n = numrows - hstartcol; |
|
while (n-- > 0) { |
|
dstptr2 = dstptr; |
|
srcptr2 = srcptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
*dstptr2 = *srcptr2; |
|
++dstptr2; |
|
++srcptr2; |
|
} |
|
dstptr += 2 * stride; |
|
srcptr += stride; |
|
} |
|
/* Copy the samples from the lowpass channel into place. */ |
|
srcptr = buf; |
|
dstptr = &a[parity * stride]; |
|
n = hstartcol; |
|
while (n-- > 0) { |
|
dstptr2 = dstptr; |
|
srcptr2 = srcptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
*dstptr2 = *srcptr2; |
|
++dstptr2; |
|
++srcptr2; |
|
} |
|
dstptr += 2 * stride; |
|
srcptr += JPC_QMFB_COLGRPSIZE; |
|
} |
|
|
|
#if !defined(HAVE_VLA) |
|
/* If the join buffer was allocated on the heap, free this memory. */ |
|
if (buf != joinbuf) { |
|
jas_free(buf); |
|
} |
|
#endif |
|
|
|
} |
|
|
|
void jpc_qmfb_join_colres(jpc_fix_t *a, int numrows, int numcols, |
|
int stride, int parity) |
|
{ |
|
|
|
int bufsize = JPC_CEILDIVPOW2(numrows, 1); |
|
#if !defined(HAVE_VLA) |
|
jpc_fix_t joinbuf[QMFB_JOINBUFSIZE * JPC_QMFB_COLGRPSIZE]; |
|
#else |
|
jpc_fix_t joinbuf[bufsize * numcols]; |
|
#endif |
|
jpc_fix_t *buf = joinbuf; |
|
jpc_fix_t *srcptr; |
|
jpc_fix_t *dstptr; |
|
register jpc_fix_t *srcptr2; |
|
register jpc_fix_t *dstptr2; |
|
register int n; |
|
register int i; |
|
int hstartcol; |
|
|
|
#if !defined(HAVE_VLA) |
|
/* Allocate memory for the join buffer from the heap. */ |
|
if (bufsize > QMFB_JOINBUFSIZE) { |
|
if (!(buf = jas_alloc3(bufsize, numcols, sizeof(jpc_fix_t)))) { |
|
/* We have no choice but to commit suicide. */ |
|
abort(); |
|
} |
|
} |
|
#endif |
|
|
|
hstartcol = (numrows + 1 - parity) >> 1; |
|
|
|
/* Save the samples from the lowpass channel. */ |
|
n = hstartcol; |
|
srcptr = &a[0]; |
|
dstptr = buf; |
|
while (n-- > 0) { |
|
dstptr2 = dstptr; |
|
srcptr2 = srcptr; |
|
for (i = 0; i < numcols; ++i) { |
|
*dstptr2 = *srcptr2; |
|
++dstptr2; |
|
++srcptr2; |
|
} |
|
srcptr += stride; |
|
dstptr += numcols; |
|
} |
|
/* Copy the samples from the highpass channel into place. */ |
|
srcptr = &a[hstartcol * stride]; |
|
dstptr = &a[(1 - parity) * stride]; |
|
n = numrows - hstartcol; |
|
while (n-- > 0) { |
|
dstptr2 = dstptr; |
|
srcptr2 = srcptr; |
|
for (i = 0; i < numcols; ++i) { |
|
*dstptr2 = *srcptr2; |
|
++dstptr2; |
|
++srcptr2; |
|
} |
|
dstptr += 2 * stride; |
|
srcptr += stride; |
|
} |
|
/* Copy the samples from the lowpass channel into place. */ |
|
srcptr = buf; |
|
dstptr = &a[parity * stride]; |
|
n = hstartcol; |
|
while (n-- > 0) { |
|
dstptr2 = dstptr; |
|
srcptr2 = srcptr; |
|
for (i = 0; i < numcols; ++i) { |
|
*dstptr2 = *srcptr2; |
|
++dstptr2; |
|
++srcptr2; |
|
} |
|
dstptr += 2 * stride; |
|
srcptr += numcols; |
|
} |
|
|
|
#if !defined(HAVE_VLA) |
|
/* If the join buffer was allocated on the heap, free this memory. */ |
|
if (buf != joinbuf) { |
|
jas_free(buf); |
|
} |
|
#endif |
|
|
|
} |
|
|
|
/******************************************************************************\ |
|
* 5/3 transform |
|
\******************************************************************************/ |
|
|
|
void jpc_ft_fwdlift_row(jpc_fix_t *a, int numcols, int parity) |
|
{ |
|
|
|
register jpc_fix_t *lptr; |
|
register jpc_fix_t *hptr; |
|
register int n; |
|
int llen; |
|
|
|
llen = (numcols + 1 - parity) >> 1; |
|
|
|
if (numcols > 1) { |
|
|
|
/* Apply the first lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen]; |
|
if (parity) { |
|
hptr[0] -= lptr[0]; |
|
++hptr; |
|
} |
|
n = numcols - llen - parity - (parity == (numcols & 1)); |
|
while (n-- > 0) { |
|
hptr[0] -= (lptr[0] + lptr[1]) >> 1; |
|
++hptr; |
|
++lptr; |
|
} |
|
if (parity == (numcols & 1)) { |
|
hptr[0] -= lptr[0]; |
|
} |
|
|
|
/* Apply the second lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen]; |
|
if (!parity) { |
|
lptr[0] += (hptr[0] + 1) >> 1; |
|
++lptr; |
|
} |
|
n = llen - (!parity) - (parity != (numcols & 1)); |
|
while (n-- > 0) { |
|
lptr[0] += (hptr[0] + hptr[1] + 2) >> 2; |
|
++lptr; |
|
++hptr; |
|
} |
|
if (parity != (numcols & 1)) { |
|
lptr[0] += (hptr[0] + 1) >> 1; |
|
} |
|
|
|
} else { |
|
|
|
if (parity) { |
|
lptr = &a[0]; |
|
lptr[0] <<= 1; |
|
} |
|
|
|
} |
|
|
|
} |
|
|
|
void jpc_ft_fwdlift_col(jpc_fix_t *a, int numrows, int stride, int parity) |
|
{ |
|
|
|
jpc_fix_t *lptr; |
|
jpc_fix_t *hptr; |
|
#if 0 |
|
register jpc_fix_t *lptr2; |
|
register jpc_fix_t *hptr2; |
|
register int i; |
|
#endif |
|
register int n; |
|
int llen; |
|
|
|
llen = (numrows + 1 - parity) >> 1; |
|
|
|
if (numrows > 1) { |
|
|
|
/* Apply the first lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
hptr[0] -= lptr[0]; |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
hptr[0] -= (lptr[0] + lptr[stride]) >> 1; |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
hptr[0] -= lptr[0]; |
|
} |
|
|
|
/* Apply the second lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr[0] += (hptr[0] + 1) >> 1; |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr[0] += (hptr[0] + hptr[stride] + 2) >> 2; |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr[0] += (hptr[0] + 1) >> 1; |
|
} |
|
|
|
} else { |
|
|
|
if (parity) { |
|
lptr = &a[0]; |
|
lptr[0] <<= 1; |
|
} |
|
|
|
} |
|
|
|
} |
|
|
|
void jpc_ft_fwdlift_colgrp(jpc_fix_t *a, int numrows, int stride, int parity) |
|
{ |
|
|
|
jpc_fix_t *lptr; |
|
jpc_fix_t *hptr; |
|
register jpc_fix_t *lptr2; |
|
register jpc_fix_t *hptr2; |
|
register int n; |
|
register int i; |
|
int llen; |
|
|
|
llen = (numrows + 1 - parity) >> 1; |
|
|
|
if (numrows > 1) { |
|
|
|
/* Apply the first lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
hptr2[0] -= lptr2[0]; |
|
++hptr2; |
|
++lptr2; |
|
} |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
hptr2[0] -= (lptr2[0] + lptr2[stride]) >> 1; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
hptr2[0] -= lptr2[0]; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the second lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
lptr2[0] += (hptr2[0] + 1) >> 1; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
lptr2[0] += (hptr2[0] + hptr2[stride] + 2) >> 2; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
lptr2[0] += (hptr2[0] + 1) >> 1; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
} else { |
|
|
|
if (parity) { |
|
lptr2 = &a[0]; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
lptr2[0] <<= 1; |
|
++lptr2; |
|
} |
|
} |
|
|
|
} |
|
|
|
} |
|
|
|
void jpc_ft_fwdlift_colres(jpc_fix_t *a, int numrows, int numcols, int stride, |
|
int parity) |
|
{ |
|
|
|
jpc_fix_t *lptr; |
|
jpc_fix_t *hptr; |
|
register jpc_fix_t *lptr2; |
|
register jpc_fix_t *hptr2; |
|
register int n; |
|
register int i; |
|
int llen; |
|
|
|
llen = (numrows + 1 - parity) >> 1; |
|
|
|
if (numrows > 1) { |
|
|
|
/* Apply the first lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
hptr2[0] -= lptr2[0]; |
|
++hptr2; |
|
++lptr2; |
|
} |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
hptr2[0] -= (lptr2[0] + lptr2[stride]) >> 1; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
hptr2[0] -= lptr2[0]; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the second lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
lptr2[0] += (hptr2[0] + 1) >> 1; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
lptr2[0] += (hptr2[0] + hptr2[stride] + 2) >> 2; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
lptr2[0] += (hptr2[0] + 1) >> 1; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
} else { |
|
|
|
if (parity) { |
|
lptr2 = &a[0]; |
|
for (i = 0; i < numcols; ++i) { |
|
lptr2[0] <<= 1; |
|
++lptr2; |
|
} |
|
} |
|
|
|
} |
|
|
|
} |
|
|
|
void jpc_ft_invlift_row(jpc_fix_t *a, int numcols, int parity) |
|
{ |
|
|
|
register jpc_fix_t *lptr; |
|
register jpc_fix_t *hptr; |
|
register int n; |
|
int llen; |
|
|
|
llen = (numcols + 1 - parity) >> 1; |
|
|
|
if (numcols > 1) { |
|
|
|
/* Apply the first lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen]; |
|
if (!parity) { |
|
lptr[0] -= (hptr[0] + 1) >> 1; |
|
++lptr; |
|
} |
|
n = llen - (!parity) - (parity != (numcols & 1)); |
|
while (n-- > 0) { |
|
lptr[0] -= (hptr[0] + hptr[1] + 2) >> 2; |
|
++lptr; |
|
++hptr; |
|
} |
|
if (parity != (numcols & 1)) { |
|
lptr[0] -= (hptr[0] + 1) >> 1; |
|
} |
|
|
|
/* Apply the second lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen]; |
|
if (parity) { |
|
hptr[0] += lptr[0]; |
|
++hptr; |
|
} |
|
n = numcols - llen - parity - (parity == (numcols & 1)); |
|
while (n-- > 0) { |
|
hptr[0] += (lptr[0] + lptr[1]) >> 1; |
|
++hptr; |
|
++lptr; |
|
} |
|
if (parity == (numcols & 1)) { |
|
hptr[0] += lptr[0]; |
|
} |
|
|
|
} else { |
|
|
|
if (parity) { |
|
lptr = &a[0]; |
|
lptr[0] >>= 1; |
|
} |
|
|
|
} |
|
|
|
} |
|
|
|
void jpc_ft_invlift_col(jpc_fix_t *a, int numrows, int stride, int parity) |
|
{ |
|
|
|
jpc_fix_t *lptr; |
|
jpc_fix_t *hptr; |
|
#if 0 |
|
register jpc_fix_t *lptr2; |
|
register jpc_fix_t *hptr2; |
|
register int i; |
|
#endif |
|
register int n; |
|
int llen; |
|
|
|
llen = (numrows + 1 - parity) >> 1; |
|
|
|
if (numrows > 1) { |
|
|
|
/* Apply the first lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr[0] -= (hptr[0] + 1) >> 1; |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr[0] -= (hptr[0] + hptr[stride] + 2) >> 2; |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr[0] -= (hptr[0] + 1) >> 1; |
|
} |
|
|
|
/* Apply the second lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
hptr[0] += lptr[0]; |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
hptr[0] += (lptr[0] + lptr[stride]) >> 1; |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
hptr[0] += lptr[0]; |
|
} |
|
|
|
} else { |
|
|
|
if (parity) { |
|
lptr = &a[0]; |
|
lptr[0] >>= 1; |
|
} |
|
|
|
} |
|
|
|
} |
|
|
|
void jpc_ft_invlift_colgrp(jpc_fix_t *a, int numrows, int stride, int parity) |
|
{ |
|
|
|
jpc_fix_t *lptr; |
|
jpc_fix_t *hptr; |
|
register jpc_fix_t *lptr2; |
|
register jpc_fix_t *hptr2; |
|
register int n; |
|
register int i; |
|
int llen; |
|
|
|
llen = (numrows + 1 - parity) >> 1; |
|
|
|
if (numrows > 1) { |
|
|
|
/* Apply the first lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
lptr2[0] -= (hptr2[0] + 1) >> 1; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
lptr2[0] -= (hptr2[0] + hptr2[stride] + 2) >> 2; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
lptr2[0] -= (hptr2[0] + 1) >> 1; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the second lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
hptr2[0] += lptr2[0]; |
|
++hptr2; |
|
++lptr2; |
|
} |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
hptr2[0] += (lptr2[0] + lptr2[stride]) >> 1; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
hptr2[0] += lptr2[0]; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
} else { |
|
|
|
if (parity) { |
|
lptr2 = &a[0]; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
lptr2[0] >>= 1; |
|
++lptr2; |
|
} |
|
} |
|
|
|
} |
|
|
|
} |
|
|
|
void jpc_ft_invlift_colres(jpc_fix_t *a, int numrows, int numcols, int stride, |
|
int parity) |
|
{ |
|
|
|
jpc_fix_t *lptr; |
|
jpc_fix_t *hptr; |
|
register jpc_fix_t *lptr2; |
|
register jpc_fix_t *hptr2; |
|
register int n; |
|
register int i; |
|
int llen; |
|
|
|
llen = (numrows + 1 - parity) >> 1; |
|
|
|
if (numrows > 1) { |
|
|
|
/* Apply the first lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
lptr2[0] -= (hptr2[0] + 1) >> 1; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
lptr2[0] -= (hptr2[0] + hptr2[stride] + 2) >> 2; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
lptr2[0] -= (hptr2[0] + 1) >> 1; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the second lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
hptr2[0] += lptr2[0]; |
|
++hptr2; |
|
++lptr2; |
|
} |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
hptr2[0] += (lptr2[0] + lptr2[stride]) >> 1; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
hptr2[0] += lptr2[0]; |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
} else { |
|
|
|
if (parity) { |
|
lptr2 = &a[0]; |
|
for (i = 0; i < numcols; ++i) { |
|
lptr2[0] >>= 1; |
|
++lptr2; |
|
} |
|
} |
|
|
|
} |
|
|
|
} |
|
|
|
int jpc_ft_analyze(jpc_fix_t *a, int xstart, int ystart, int width, int height, |
|
int stride) |
|
{ |
|
int numrows = height; |
|
int numcols = width; |
|
int rowparity = ystart & 1; |
|
int colparity = xstart & 1; |
|
int i; |
|
jpc_fix_t *startptr; |
|
int maxcols; |
|
|
|
maxcols = (numcols / JPC_QMFB_COLGRPSIZE) * JPC_QMFB_COLGRPSIZE; |
|
startptr = &a[0]; |
|
for (i = 0; i < maxcols; i += JPC_QMFB_COLGRPSIZE) { |
|
jpc_qmfb_split_colgrp(startptr, numrows, stride, rowparity); |
|
jpc_ft_fwdlift_colgrp(startptr, numrows, stride, rowparity); |
|
startptr += JPC_QMFB_COLGRPSIZE; |
|
} |
|
if (maxcols < numcols) { |
|
jpc_qmfb_split_colres(startptr, numrows, numcols - maxcols, stride, |
|
rowparity); |
|
jpc_ft_fwdlift_colres(startptr, numrows, numcols - maxcols, stride, |
|
rowparity); |
|
} |
|
|
|
startptr = &a[0]; |
|
for (i = 0; i < numrows; ++i) { |
|
jpc_qmfb_split_row(startptr, numcols, colparity); |
|
jpc_ft_fwdlift_row(startptr, numcols, colparity); |
|
startptr += stride; |
|
} |
|
|
|
return 0; |
|
|
|
} |
|
|
|
int jpc_ft_synthesize(int *a, int xstart, int ystart, int width, int height, |
|
int stride) |
|
{ |
|
int numrows = height; |
|
int numcols = width; |
|
int rowparity = ystart & 1; |
|
int colparity = xstart & 1; |
|
|
|
int maxcols; |
|
jpc_fix_t *startptr; |
|
int i; |
|
|
|
startptr = &a[0]; |
|
for (i = 0; i < numrows; ++i) { |
|
jpc_ft_invlift_row(startptr, numcols, colparity); |
|
jpc_qmfb_join_row(startptr, numcols, colparity); |
|
startptr += stride; |
|
} |
|
|
|
maxcols = (numcols / JPC_QMFB_COLGRPSIZE) * JPC_QMFB_COLGRPSIZE; |
|
startptr = &a[0]; |
|
for (i = 0; i < maxcols; i += JPC_QMFB_COLGRPSIZE) { |
|
jpc_ft_invlift_colgrp(startptr, numrows, stride, rowparity); |
|
jpc_qmfb_join_colgrp(startptr, numrows, stride, rowparity); |
|
startptr += JPC_QMFB_COLGRPSIZE; |
|
} |
|
if (maxcols < numcols) { |
|
jpc_ft_invlift_colres(startptr, numrows, numcols - maxcols, stride, |
|
rowparity); |
|
jpc_qmfb_join_colres(startptr, numrows, numcols - maxcols, stride, |
|
rowparity); |
|
} |
|
|
|
return 0; |
|
|
|
} |
|
|
|
/******************************************************************************\ |
|
* 9/7 transform |
|
\******************************************************************************/ |
|
|
|
#define ALPHA (-1.586134342059924) |
|
#define BETA (-0.052980118572961) |
|
#define GAMMA (0.882911075530934) |
|
#define DELTA (0.443506852043971) |
|
#define LGAIN (1.0 / 1.23017410558578) |
|
#define HGAIN (1.0 / 1.62578613134411) |
|
|
|
void jpc_ns_fwdlift_row(jpc_fix_t *a, int numcols, int parity) |
|
{ |
|
|
|
register jpc_fix_t *lptr; |
|
register jpc_fix_t *hptr; |
|
register int n; |
|
int llen; |
|
|
|
llen = (numcols + 1 - parity) >> 1; |
|
|
|
if (numcols > 1) { |
|
|
|
/* Apply the first lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen]; |
|
if (parity) { |
|
jpc_fix_pluseq(hptr[0], jpc_fix_mul(jpc_dbltofix(2.0 * ALPHA), |
|
lptr[0])); |
|
++hptr; |
|
} |
|
n = numcols - llen - parity - (parity == (numcols & 1)); |
|
while (n-- > 0) { |
|
jpc_fix_pluseq(hptr[0], jpc_fix_mul(jpc_dbltofix(ALPHA), |
|
jpc_fix_add(lptr[0], lptr[1]))); |
|
++hptr; |
|
++lptr; |
|
} |
|
if (parity == (numcols & 1)) { |
|
jpc_fix_pluseq(hptr[0], jpc_fix_mul(jpc_dbltofix(2.0 * ALPHA), |
|
lptr[0])); |
|
} |
|
|
|
/* Apply the second lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen]; |
|
if (!parity) { |
|
jpc_fix_pluseq(lptr[0], jpc_fix_mul(jpc_dbltofix(2.0 * BETA), |
|
hptr[0])); |
|
++lptr; |
|
} |
|
n = llen - (!parity) - (parity != (numcols & 1)); |
|
while (n-- > 0) { |
|
jpc_fix_pluseq(lptr[0], jpc_fix_mul(jpc_dbltofix(BETA), |
|
jpc_fix_add(hptr[0], hptr[1]))); |
|
++lptr; |
|
++hptr; |
|
} |
|
if (parity != (numcols & 1)) { |
|
jpc_fix_pluseq(lptr[0], jpc_fix_mul(jpc_dbltofix(2.0 * BETA), |
|
hptr[0])); |
|
} |
|
|
|
/* Apply the third lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen]; |
|
if (parity) { |
|
jpc_fix_pluseq(hptr[0], jpc_fix_mul(jpc_dbltofix(2.0 * GAMMA), |
|
lptr[0])); |
|
++hptr; |
|
} |
|
n = numcols - llen - parity - (parity == (numcols & 1)); |
|
while (n-- > 0) { |
|
jpc_fix_pluseq(hptr[0], jpc_fix_mul(jpc_dbltofix(GAMMA), |
|
jpc_fix_add(lptr[0], lptr[1]))); |
|
++hptr; |
|
++lptr; |
|
} |
|
if (parity == (numcols & 1)) { |
|
jpc_fix_pluseq(hptr[0], jpc_fix_mul(jpc_dbltofix(2.0 * GAMMA), |
|
lptr[0])); |
|
} |
|
|
|
/* Apply the fourth lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen]; |
|
if (!parity) { |
|
jpc_fix_pluseq(lptr[0], jpc_fix_mul(jpc_dbltofix(2.0 * DELTA), |
|
hptr[0])); |
|
++lptr; |
|
} |
|
n = llen - (!parity) - (parity != (numcols & 1)); |
|
while (n-- > 0) { |
|
jpc_fix_pluseq(lptr[0], jpc_fix_mul(jpc_dbltofix(DELTA), |
|
jpc_fix_add(hptr[0], hptr[1]))); |
|
++lptr; |
|
++hptr; |
|
} |
|
if (parity != (numcols & 1)) { |
|
jpc_fix_pluseq(lptr[0], jpc_fix_mul(jpc_dbltofix(2.0 * DELTA), |
|
hptr[0])); |
|
} |
|
|
|
/* Apply the scaling step. */ |
|
#if defined(WT_DOSCALE) |
|
lptr = &a[0]; |
|
n = llen; |
|
while (n-- > 0) { |
|
lptr[0] = jpc_fix_mul(lptr[0], jpc_dbltofix(LGAIN)); |
|
++lptr; |
|
} |
|
hptr = &a[llen]; |
|
n = numcols - llen; |
|
while (n-- > 0) { |
|
hptr[0] = jpc_fix_mul(hptr[0], jpc_dbltofix(HGAIN)); |
|
++hptr; |
|
} |
|
#endif |
|
|
|
} else { |
|
|
|
#if defined(WT_LENONE) |
|
if (parity) { |
|
lptr = &a[0]; |
|
lptr[0] <<= 1; |
|
} |
|
#endif |
|
|
|
} |
|
|
|
} |
|
|
|
void jpc_ns_fwdlift_colgrp(jpc_fix_t *a, int numrows, int stride, |
|
int parity) |
|
{ |
|
|
|
jpc_fix_t *lptr; |
|
jpc_fix_t *hptr; |
|
register jpc_fix_t *lptr2; |
|
register jpc_fix_t *hptr2; |
|
register int n; |
|
register int i; |
|
int llen; |
|
|
|
llen = (numrows + 1 - parity) >> 1; |
|
|
|
if (numrows > 1) { |
|
|
|
/* Apply the first lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * ALPHA), |
|
lptr2[0])); |
|
++hptr2; |
|
++lptr2; |
|
} |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(ALPHA), |
|
jpc_fix_add(lptr2[0], lptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * ALPHA), |
|
lptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the second lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * BETA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(BETA), |
|
jpc_fix_add(hptr2[0], hptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * BETA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the third lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * GAMMA), |
|
lptr2[0])); |
|
++hptr2; |
|
++lptr2; |
|
} |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(GAMMA), |
|
jpc_fix_add(lptr2[0], lptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * GAMMA), |
|
lptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the fourth lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * DELTA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(DELTA), |
|
jpc_fix_add(hptr2[0], hptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * DELTA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the scaling step. */ |
|
#if defined(WT_DOSCALE) |
|
lptr = &a[0]; |
|
n = llen; |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
lptr2[0] = jpc_fix_mul(lptr2[0], jpc_dbltofix(LGAIN)); |
|
++lptr2; |
|
} |
|
lptr += stride; |
|
} |
|
hptr = &a[llen * stride]; |
|
n = numrows - llen; |
|
while (n-- > 0) { |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
hptr2[0] = jpc_fix_mul(hptr2[0], jpc_dbltofix(HGAIN)); |
|
++hptr2; |
|
} |
|
hptr += stride; |
|
} |
|
#endif |
|
|
|
} else { |
|
|
|
#if defined(WT_LENONE) |
|
if (parity) { |
|
lptr2 = &a[0]; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
lptr2[0] <<= 1; |
|
++lptr2; |
|
} |
|
} |
|
#endif |
|
|
|
} |
|
|
|
} |
|
|
|
void jpc_ns_fwdlift_colres(jpc_fix_t *a, int numrows, int numcols, |
|
int stride, int parity) |
|
{ |
|
|
|
jpc_fix_t *lptr; |
|
jpc_fix_t *hptr; |
|
register jpc_fix_t *lptr2; |
|
register jpc_fix_t *hptr2; |
|
register int n; |
|
register int i; |
|
int llen; |
|
|
|
llen = (numrows + 1 - parity) >> 1; |
|
|
|
if (numrows > 1) { |
|
|
|
/* Apply the first lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * ALPHA), |
|
lptr2[0])); |
|
++hptr2; |
|
++lptr2; |
|
} |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(ALPHA), |
|
jpc_fix_add(lptr2[0], lptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * ALPHA), |
|
lptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the second lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * BETA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(BETA), |
|
jpc_fix_add(hptr2[0], hptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * BETA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the third lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * GAMMA), |
|
lptr2[0])); |
|
++hptr2; |
|
++lptr2; |
|
} |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(GAMMA), |
|
jpc_fix_add(lptr2[0], lptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * GAMMA), |
|
lptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the fourth lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * DELTA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(DELTA), |
|
jpc_fix_add(hptr2[0], hptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * DELTA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the scaling step. */ |
|
#if defined(WT_DOSCALE) |
|
lptr = &a[0]; |
|
n = llen; |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
for (i = 0; i < numcols; ++i) { |
|
lptr2[0] = jpc_fix_mul(lptr2[0], jpc_dbltofix(LGAIN)); |
|
++lptr2; |
|
} |
|
lptr += stride; |
|
} |
|
hptr = &a[llen * stride]; |
|
n = numrows - llen; |
|
while (n-- > 0) { |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
hptr2[0] = jpc_fix_mul(hptr2[0], jpc_dbltofix(HGAIN)); |
|
++hptr2; |
|
} |
|
hptr += stride; |
|
} |
|
#endif |
|
|
|
} else { |
|
|
|
#if defined(WT_LENONE) |
|
if (parity) { |
|
lptr2 = &a[0]; |
|
for (i = 0; i < numcols; ++i) { |
|
lptr2[0] <<= 1; |
|
++lptr2; |
|
} |
|
} |
|
#endif |
|
|
|
} |
|
|
|
} |
|
|
|
void jpc_ns_fwdlift_col(jpc_fix_t *a, int numrows, int stride, |
|
int parity) |
|
{ |
|
|
|
jpc_fix_t *lptr; |
|
jpc_fix_t *hptr; |
|
register jpc_fix_t *lptr2; |
|
register jpc_fix_t *hptr2; |
|
register int n; |
|
int llen; |
|
|
|
llen = (numrows + 1 - parity) >> 1; |
|
|
|
if (numrows > 1) { |
|
|
|
/* Apply the first lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * ALPHA), |
|
lptr2[0])); |
|
++hptr2; |
|
++lptr2; |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(ALPHA), |
|
jpc_fix_add(lptr2[0], lptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * ALPHA), |
|
lptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
|
|
/* Apply the second lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * BETA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(BETA), |
|
jpc_fix_add(hptr2[0], hptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * BETA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
|
|
/* Apply the third lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * GAMMA), |
|
lptr2[0])); |
|
++hptr2; |
|
++lptr2; |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(GAMMA), |
|
jpc_fix_add(lptr2[0], lptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_pluseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * GAMMA), |
|
lptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
|
|
/* Apply the fourth lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * DELTA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(DELTA), |
|
jpc_fix_add(hptr2[0], hptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_pluseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * DELTA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
|
|
/* Apply the scaling step. */ |
|
#if defined(WT_DOSCALE) |
|
lptr = &a[0]; |
|
n = llen; |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
lptr2[0] = jpc_fix_mul(lptr2[0], jpc_dbltofix(LGAIN)); |
|
++lptr2; |
|
lptr += stride; |
|
} |
|
hptr = &a[llen * stride]; |
|
n = numrows - llen; |
|
while (n-- > 0) { |
|
hptr2 = hptr; |
|
hptr2[0] = jpc_fix_mul(hptr2[0], jpc_dbltofix(HGAIN)); |
|
++hptr2; |
|
hptr += stride; |
|
} |
|
#endif |
|
|
|
} else { |
|
|
|
#if defined(WT_LENONE) |
|
if (parity) { |
|
lptr2 = &a[0]; |
|
lptr2[0] <<= 1; |
|
++lptr2; |
|
} |
|
#endif |
|
|
|
} |
|
|
|
} |
|
|
|
void jpc_ns_invlift_row(jpc_fix_t *a, int numcols, int parity) |
|
{ |
|
|
|
register jpc_fix_t *lptr; |
|
register jpc_fix_t *hptr; |
|
register int n; |
|
int llen; |
|
|
|
llen = (numcols + 1 - parity) >> 1; |
|
|
|
if (numcols > 1) { |
|
|
|
/* Apply the scaling step. */ |
|
#if defined(WT_DOSCALE) |
|
lptr = &a[0]; |
|
n = llen; |
|
while (n-- > 0) { |
|
lptr[0] = jpc_fix_mul(lptr[0], jpc_dbltofix(1.0 / LGAIN)); |
|
++lptr; |
|
} |
|
hptr = &a[llen]; |
|
n = numcols - llen; |
|
while (n-- > 0) { |
|
hptr[0] = jpc_fix_mul(hptr[0], jpc_dbltofix(1.0 / HGAIN)); |
|
++hptr; |
|
} |
|
#endif |
|
|
|
/* Apply the first lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen]; |
|
if (!parity) { |
|
jpc_fix_minuseq(lptr[0], jpc_fix_mul(jpc_dbltofix(2.0 * DELTA), |
|
hptr[0])); |
|
++lptr; |
|
} |
|
n = llen - (!parity) - (parity != (numcols & 1)); |
|
while (n-- > 0) { |
|
jpc_fix_minuseq(lptr[0], jpc_fix_mul(jpc_dbltofix(DELTA), |
|
jpc_fix_add(hptr[0], hptr[1]))); |
|
++lptr; |
|
++hptr; |
|
} |
|
if (parity != (numcols & 1)) { |
|
jpc_fix_minuseq(lptr[0], jpc_fix_mul(jpc_dbltofix(2.0 * DELTA), |
|
hptr[0])); |
|
} |
|
|
|
/* Apply the second lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen]; |
|
if (parity) { |
|
jpc_fix_minuseq(hptr[0], jpc_fix_mul(jpc_dbltofix(2.0 * GAMMA), |
|
lptr[0])); |
|
++hptr; |
|
} |
|
n = numcols - llen - parity - (parity == (numcols & 1)); |
|
while (n-- > 0) { |
|
jpc_fix_minuseq(hptr[0], jpc_fix_mul(jpc_dbltofix(GAMMA), |
|
jpc_fix_add(lptr[0], lptr[1]))); |
|
++hptr; |
|
++lptr; |
|
} |
|
if (parity == (numcols & 1)) { |
|
jpc_fix_minuseq(hptr[0], jpc_fix_mul(jpc_dbltofix(2.0 * GAMMA), |
|
lptr[0])); |
|
} |
|
|
|
/* Apply the third lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen]; |
|
if (!parity) { |
|
jpc_fix_minuseq(lptr[0], jpc_fix_mul(jpc_dbltofix(2.0 * BETA), |
|
hptr[0])); |
|
++lptr; |
|
} |
|
n = llen - (!parity) - (parity != (numcols & 1)); |
|
while (n-- > 0) { |
|
jpc_fix_minuseq(lptr[0], jpc_fix_mul(jpc_dbltofix(BETA), |
|
jpc_fix_add(hptr[0], hptr[1]))); |
|
++lptr; |
|
++hptr; |
|
} |
|
if (parity != (numcols & 1)) { |
|
jpc_fix_minuseq(lptr[0], jpc_fix_mul(jpc_dbltofix(2.0 * BETA), |
|
hptr[0])); |
|
} |
|
|
|
/* Apply the fourth lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen]; |
|
if (parity) { |
|
jpc_fix_minuseq(hptr[0], jpc_fix_mul(jpc_dbltofix(2.0 * ALPHA), |
|
lptr[0])); |
|
++hptr; |
|
} |
|
n = numcols - llen - parity - (parity == (numcols & 1)); |
|
while (n-- > 0) { |
|
jpc_fix_minuseq(hptr[0], jpc_fix_mul(jpc_dbltofix(ALPHA), |
|
jpc_fix_add(lptr[0], lptr[1]))); |
|
++hptr; |
|
++lptr; |
|
} |
|
if (parity == (numcols & 1)) { |
|
jpc_fix_minuseq(hptr[0], jpc_fix_mul(jpc_dbltofix(2.0 * ALPHA), |
|
lptr[0])); |
|
} |
|
|
|
} else { |
|
|
|
#if defined(WT_LENONE) |
|
if (parity) { |
|
lptr = &a[0]; |
|
lptr[0] >>= 1; |
|
} |
|
#endif |
|
|
|
} |
|
|
|
} |
|
|
|
void jpc_ns_invlift_colgrp(jpc_fix_t *a, int numrows, int stride, |
|
int parity) |
|
{ |
|
|
|
jpc_fix_t *lptr; |
|
jpc_fix_t *hptr; |
|
register jpc_fix_t *lptr2; |
|
register jpc_fix_t *hptr2; |
|
register int n; |
|
register int i; |
|
int llen; |
|
|
|
llen = (numrows + 1 - parity) >> 1; |
|
|
|
if (numrows > 1) { |
|
|
|
/* Apply the scaling step. */ |
|
#if defined(WT_DOSCALE) |
|
lptr = &a[0]; |
|
n = llen; |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
lptr2[0] = jpc_fix_mul(lptr2[0], jpc_dbltofix(1.0 / LGAIN)); |
|
++lptr2; |
|
} |
|
lptr += stride; |
|
} |
|
hptr = &a[llen * stride]; |
|
n = numrows - llen; |
|
while (n-- > 0) { |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
hptr2[0] = jpc_fix_mul(hptr2[0], jpc_dbltofix(1.0 / HGAIN)); |
|
++hptr2; |
|
} |
|
hptr += stride; |
|
} |
|
#endif |
|
|
|
/* Apply the first lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
DELTA), hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(DELTA), |
|
jpc_fix_add(hptr2[0], hptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
DELTA), hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the second lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
GAMMA), lptr2[0])); |
|
++hptr2; |
|
++lptr2; |
|
} |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(GAMMA), |
|
jpc_fix_add(lptr2[0], lptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
GAMMA), lptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the third lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * BETA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(BETA), |
|
jpc_fix_add(hptr2[0], hptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * BETA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the fourth lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
ALPHA), lptr2[0])); |
|
++hptr2; |
|
++lptr2; |
|
} |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(ALPHA), |
|
jpc_fix_add(lptr2[0], lptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
ALPHA), lptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
} else { |
|
|
|
#if defined(WT_LENONE) |
|
if (parity) { |
|
lptr2 = &a[0]; |
|
for (i = 0; i < JPC_QMFB_COLGRPSIZE; ++i) { |
|
lptr2[0] >>= 1; |
|
++lptr2; |
|
} |
|
} |
|
#endif |
|
|
|
} |
|
|
|
} |
|
|
|
void jpc_ns_invlift_colres(jpc_fix_t *a, int numrows, int numcols, |
|
int stride, int parity) |
|
{ |
|
|
|
jpc_fix_t *lptr; |
|
jpc_fix_t *hptr; |
|
register jpc_fix_t *lptr2; |
|
register jpc_fix_t *hptr2; |
|
register int n; |
|
register int i; |
|
int llen; |
|
|
|
llen = (numrows + 1 - parity) >> 1; |
|
|
|
if (numrows > 1) { |
|
|
|
/* Apply the scaling step. */ |
|
#if defined(WT_DOSCALE) |
|
lptr = &a[0]; |
|
n = llen; |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
for (i = 0; i < numcols; ++i) { |
|
lptr2[0] = jpc_fix_mul(lptr2[0], jpc_dbltofix(1.0 / LGAIN)); |
|
++lptr2; |
|
} |
|
lptr += stride; |
|
} |
|
hptr = &a[llen * stride]; |
|
n = numrows - llen; |
|
while (n-- > 0) { |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
hptr2[0] = jpc_fix_mul(hptr2[0], jpc_dbltofix(1.0 / HGAIN)); |
|
++hptr2; |
|
} |
|
hptr += stride; |
|
} |
|
#endif |
|
|
|
/* Apply the first lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
DELTA), hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(DELTA), |
|
jpc_fix_add(hptr2[0], hptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
DELTA), hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the second lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
GAMMA), lptr2[0])); |
|
++hptr2; |
|
++lptr2; |
|
} |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(GAMMA), |
|
jpc_fix_add(lptr2[0], lptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
GAMMA), lptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the third lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * BETA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(BETA), |
|
jpc_fix_add(hptr2[0], hptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * BETA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
/* Apply the fourth lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
ALPHA), lptr2[0])); |
|
++hptr2; |
|
++lptr2; |
|
} |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(ALPHA), |
|
jpc_fix_add(lptr2[0], lptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
for (i = 0; i < numcols; ++i) { |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
ALPHA), lptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
} |
|
|
|
} else { |
|
|
|
#if defined(WT_LENONE) |
|
if (parity) { |
|
lptr2 = &a[0]; |
|
for (i = 0; i < numcols; ++i) { |
|
lptr2[0] >>= 1; |
|
++lptr2; |
|
} |
|
} |
|
#endif |
|
|
|
} |
|
|
|
} |
|
|
|
void jpc_ns_invlift_col(jpc_fix_t *a, int numrows, int stride, |
|
int parity) |
|
{ |
|
|
|
jpc_fix_t *lptr; |
|
jpc_fix_t *hptr; |
|
register jpc_fix_t *lptr2; |
|
register jpc_fix_t *hptr2; |
|
register int n; |
|
int llen; |
|
|
|
llen = (numrows + 1 - parity) >> 1; |
|
|
|
if (numrows > 1) { |
|
|
|
/* Apply the scaling step. */ |
|
#if defined(WT_DOSCALE) |
|
lptr = &a[0]; |
|
n = llen; |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
lptr2[0] = jpc_fix_mul(lptr2[0], jpc_dbltofix(1.0 / LGAIN)); |
|
++lptr2; |
|
lptr += stride; |
|
} |
|
hptr = &a[llen * stride]; |
|
n = numrows - llen; |
|
while (n-- > 0) { |
|
hptr2 = hptr; |
|
hptr2[0] = jpc_fix_mul(hptr2[0], jpc_dbltofix(1.0 / HGAIN)); |
|
++hptr2; |
|
hptr += stride; |
|
} |
|
#endif |
|
|
|
/* Apply the first lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
DELTA), hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(DELTA), |
|
jpc_fix_add(hptr2[0], hptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
DELTA), hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
|
|
/* Apply the second lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
GAMMA), lptr2[0])); |
|
++hptr2; |
|
++lptr2; |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(GAMMA), |
|
jpc_fix_add(lptr2[0], lptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
GAMMA), lptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
|
|
/* Apply the third lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (!parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * BETA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
lptr += stride; |
|
} |
|
n = llen - (!parity) - (parity != (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(BETA), |
|
jpc_fix_add(hptr2[0], hptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
lptr += stride; |
|
hptr += stride; |
|
} |
|
if (parity != (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_minuseq(lptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * BETA), |
|
hptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
|
|
/* Apply the fourth lifting step. */ |
|
lptr = &a[0]; |
|
hptr = &a[llen * stride]; |
|
if (parity) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
ALPHA), lptr2[0])); |
|
++hptr2; |
|
++lptr2; |
|
hptr += stride; |
|
} |
|
n = numrows - llen - parity - (parity == (numrows & 1)); |
|
while (n-- > 0) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(ALPHA), |
|
jpc_fix_add(lptr2[0], lptr2[stride]))); |
|
++lptr2; |
|
++hptr2; |
|
hptr += stride; |
|
lptr += stride; |
|
} |
|
if (parity == (numrows & 1)) { |
|
lptr2 = lptr; |
|
hptr2 = hptr; |
|
jpc_fix_minuseq(hptr2[0], jpc_fix_mul(jpc_dbltofix(2.0 * |
|
ALPHA), lptr2[0])); |
|
++lptr2; |
|
++hptr2; |
|
} |
|
|
|
} else { |
|
|
|
#if defined(WT_LENONE) |
|
if (parity) { |
|
lptr2 = &a[0]; |
|
lptr2[0] >>= 1; |
|
++lptr2; |
|
} |
|
#endif |
|
|
|
} |
|
|
|
} |
|
|
|
int jpc_ns_analyze(jpc_fix_t *a, int xstart, int ystart, int width, int height, |
|
int stride) |
|
{ |
|
|
|
int numrows = height; |
|
int numcols = width; |
|
int rowparity = ystart & 1; |
|
int colparity = xstart & 1; |
|
int i; |
|
jpc_fix_t *startptr; |
|
int maxcols; |
|
|
|
maxcols = (numcols / JPC_QMFB_COLGRPSIZE) * JPC_QMFB_COLGRPSIZE; |
|
startptr = &a[0]; |
|
for (i = 0; i < maxcols; i += JPC_QMFB_COLGRPSIZE) { |
|
jpc_qmfb_split_colgrp(startptr, numrows, stride, rowparity); |
|
jpc_ns_fwdlift_colgrp(startptr, numrows, stride, rowparity); |
|
startptr += JPC_QMFB_COLGRPSIZE; |
|
} |
|
if (maxcols < numcols) { |
|
jpc_qmfb_split_colres(startptr, numrows, numcols - maxcols, stride, |
|
rowparity); |
|
jpc_ns_fwdlift_colres(startptr, numrows, numcols - maxcols, stride, |
|
rowparity); |
|
} |
|
|
|
startptr = &a[0]; |
|
for (i = 0; i < numrows; ++i) { |
|
jpc_qmfb_split_row(startptr, numcols, colparity); |
|
jpc_ns_fwdlift_row(startptr, numcols, colparity); |
|
startptr += stride; |
|
} |
|
|
|
return 0; |
|
|
|
} |
|
|
|
int jpc_ns_synthesize(jpc_fix_t *a, int xstart, int ystart, int width, |
|
int height, int stride) |
|
{ |
|
|
|
int numrows = height; |
|
int numcols = width; |
|
int rowparity = ystart & 1; |
|
int colparity = xstart & 1; |
|
int maxcols; |
|
jpc_fix_t *startptr; |
|
int i; |
|
|
|
startptr = &a[0]; |
|
for (i = 0; i < numrows; ++i) { |
|
jpc_ns_invlift_row(startptr, numcols, colparity); |
|
jpc_qmfb_join_row(startptr, numcols, colparity); |
|
startptr += stride; |
|
} |
|
|
|
maxcols = (numcols / JPC_QMFB_COLGRPSIZE) * JPC_QMFB_COLGRPSIZE; |
|
startptr = &a[0]; |
|
for (i = 0; i < maxcols; i += JPC_QMFB_COLGRPSIZE) { |
|
jpc_ns_invlift_colgrp(startptr, numrows, stride, rowparity); |
|
jpc_qmfb_join_colgrp(startptr, numrows, stride, rowparity); |
|
startptr += JPC_QMFB_COLGRPSIZE; |
|
} |
|
if (maxcols < numcols) { |
|
jpc_ns_invlift_colres(startptr, numrows, numcols - maxcols, stride, |
|
rowparity); |
|
jpc_qmfb_join_colres(startptr, numrows, numcols - maxcols, stride, |
|
rowparity); |
|
} |
|
|
|
return 0; |
|
|
|
} |
|
|
|
|