3144 lines
86 KiB
C
3144 lines
86 KiB
C
/*
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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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/* __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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* 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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#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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int jpc_ft_analyze(int *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(int *a, int xstart, int ystart, int width, int height,
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int stride);
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int jpc_ns_synthesize(int *a, int xstart, int ystart, int width,
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int height, int stride);
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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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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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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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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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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,
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836.0924988714708661,
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836.0924988714708661,
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836.0924988714708661,
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836.0924988714708661,
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836.0924988714708661,
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836.0924988714708661,
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836.0924988714708661,
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836.0924988714708661
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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,
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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,
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39.1918369552045860,
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55.4256262207444053,
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78.3836719028959124,
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110.8512517317256822,
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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,
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443.4050067351659550,
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443.4050067351659550,
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443.4050067351659550,
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443.4050067351659550,
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|
443.4050067351659550,
|
|
443.4050067351659550,
|
|
443.4050067351659550,
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|
443.4050067351659550,
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|
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,
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|
4.1152851751758002,
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|
5.8245108637728071,
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|
8.2387599345725171,
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|
11.6519546479210838,
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|
16.4785606470644375,
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|
23.3042776444606794,
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|
32.9572515613740435,
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|
46.6086013487782793,
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|
65.9145194076860861,
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|
93.2172084551803977,
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131.8290408510004283,
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|
186.4344176300625691,
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|
263.6580819564562148,
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372.8688353500955373,
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527.3161639447193920,
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745.7376707114038936,
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1054.6323278917823245,
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/* approximations follow */
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1054.6323278917823245,
|
|
1054.6323278917823245,
|
|
1054.6323278917823245,
|
|
1054.6323278917823245,
|
|
1054.6323278917823245,
|
|
1054.6323278917823245,
|
|
1054.6323278917823245,
|
|
1054.6323278917823245,
|
|
1054.6323278917823245,
|
|
1054.6323278917823245,
|
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1054.6323278917823245,
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1054.6323278917823245
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};
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double jpc_ns_hpenergywts[32] = {
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1.4425227650161456,
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1.9669426082455688,
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2.8839248082788891,
|
|
4.1475208393432981,
|
|
5.8946497530677817,
|
|
8.3471789178590949,
|
|
11.8086046551047463,
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|
16.7012780415647804,
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|
23.6196657032246620,
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|
33.4034255108592362,
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|
47.2396388881632632,
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|
66.8069597416714061,
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|
94.4793162154500692,
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|
133.6139330736999113,
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|
188.9586372358249378,
|
|
267.2278678461869390,
|
|
377.9172750722391356,
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|
534.4557359047058753,
|
|
755.8345502191498326,
|
|
1068.9114718353569060,
|
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/* approximations follow */
|
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1068.9114718353569060,
|
|
1068.9114718353569060,
|
|
1068.9114718353569060,
|
|
1068.9114718353569060,
|
|
1068.9114718353569060,
|
|
1068.9114718353569060,
|
|
1068.9114718353569060,
|
|
1068.9114718353569060,
|
|
1068.9114718353569060,
|
|
1068.9114718353569060,
|
|
1068.9114718353569060
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};
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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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void jpc_qmfb_split_row(jpc_fix_t *a, int numcols, int parity)
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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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#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 (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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#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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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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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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|
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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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|
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void jpc_qmfb_split_colgrp(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);
|
|
#if !defined(HAVE_VLA)
|
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jpc_fix_t splitbuf[QMFB_SPLITBUFSIZE * JPC_QMFB_COLGRPSIZE];
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#else
|
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jpc_fix_t splitbuf[bufsize * JPC_QMFB_COLGRPSIZE];
|
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#endif
|
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jpc_fix_t *buf = splitbuf;
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jpc_fix_t *srcptr;
|
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jpc_fix_t *dstptr;
|
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register jpc_fix_t *srcptr2;
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register jpc_fix_t *dstptr2;
|
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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)
|
|
/* 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 < 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(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 i;
|
|
jpc_fix_t *startptr;
|
|
int maxcols;
|
|
|
|
maxcols = (numcols / JPC_QMFB_COLGRPSIZE) * JPC_QMFB_COLGRPSIZE;
|
|
startptr = (jpc_fix_t*)&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 = (jpc_fix_t*)&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 = (jpc_fix_t*)&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 = (jpc_fix_t*)&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(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 i;
|
|
jpc_fix_t *startptr;
|
|
int maxcols;
|
|
|
|
maxcols = (numcols / JPC_QMFB_COLGRPSIZE) * JPC_QMFB_COLGRPSIZE;
|
|
startptr = (jpc_fix_t*)&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 = (jpc_fix_t*)&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(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 = (jpc_fix_t*)&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 = (jpc_fix_t*)&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;
|
|
|
|
}
|
|
|