ref: 7cdf839293bf3c0b5c3f52d368635156530ddf85
dir: /jpc_tsfb.c/
/*
* Copyright (c) 1999-2000 Image Power, Inc. and the University of
* British Columbia.
* Copyright (c) 2001-2004 Michael David Adams.
* All rights reserved.
*/
/* __START_OF_JASPER_LICENSE__
*
* JasPer License Version 2.0
*
* Copyright (c) 2001-2006 Michael David Adams
* Copyright (c) 1999-2000 Image Power, Inc.
* Copyright (c) 1999-2000 The University of British Columbia
*
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person (the
* "User") obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, and/or sell copies of the Software, and to permit
* persons to whom the Software is furnished to do so, subject to the
* following conditions:
*
* 1. The above copyright notices and this permission notice (which
* includes the disclaimer below) shall be included in all copies or
* substantial portions of the Software.
*
* 2. The name of a copyright holder shall not be used to endorse or
* promote products derived from the Software without specific prior
* written permission.
*
* THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
* LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
* THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
* "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
* INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE
* PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
* THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
* EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
* BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
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* IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
* SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
* AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
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* THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
* PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
* RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
* EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
*
* __END_OF_JASPER_LICENSE__
*/
/*
* Tree-Structured Filter Bank (TSFB) Library
*
* $Id$
*/
/******************************************************************************\
* Includes.
\******************************************************************************/
#include "jpc_tsfb.h"
#include "jpc_cs.h"
#include "jpc_math.h"
#include "jpc_fix.h"
#include "jasper/jas_seq.h"
static int jpc_tsfb_analyze2(jpc_tsfb_t *tsfb, jpc_fix_t *a, int xstart, int ystart,
unsigned width, unsigned height, unsigned stride, unsigned numlvls);
static int jpc_tsfb_synthesize2(jpc_tsfb_t *tsfb, jpc_fix_t *a, int xstart, int ystart,
unsigned width, unsigned height, unsigned stride, unsigned numlvls);
static void jpc_tsfb_getbands2(jpc_tsfb_t *tsfb, int locxstart, int locystart,
int xstart, int ystart, int xend, int yend, jpc_tsfb_band_t **bands,
unsigned numlvls);
/******************************************************************************\
*
\******************************************************************************/
jpc_tsfb_t *jpc_cod_gettsfb(unsigned qmfbid, unsigned numlvls)
{
jpc_tsfb_t *tsfb;
if (!(tsfb = malloc(sizeof(jpc_tsfb_t))))
return 0;
if (numlvls > 0) {
switch (qmfbid) {
case JPC_COX_INS:
tsfb->qmfb = &jpc_ns_qmfb2d;
break;
default:
case JPC_COX_RFT:
tsfb->qmfb = &jpc_ft_qmfb2d;
break;
}
} else {
tsfb->qmfb = 0;
}
tsfb->numlvls = numlvls;
return tsfb;
}
void jpc_tsfb_destroy(jpc_tsfb_t *tsfb)
{
free(tsfb);
}
int jpc_tsfb_analyze(jpc_tsfb_t *tsfb, jas_seq2d_t *a)
{
if (tsfb->numlvls == 0)
return 0;
return jpc_tsfb_analyze2(tsfb,
jas_seq2d_getref(a, jas_seq2d_xstart(a), jas_seq2d_ystart(a)),
jas_seq2d_xstart(a), jas_seq2d_ystart(a),
jas_seq2d_width(a), jas_seq2d_height(a),
jas_seq2d_rowstep(a), tsfb->numlvls - 1);
}
static int jpc_tsfb_analyze2(jpc_tsfb_t *tsfb, jpc_fix_t *a, int xstart, int ystart,
unsigned width, unsigned height, unsigned stride, unsigned numlvls)
{
if (width == 0 || height == 0)
return 0;
if ((*tsfb->qmfb->analyze)(a, xstart, ystart, width, height, stride))
return -1;
if (numlvls == 0)
return 0;
return jpc_tsfb_analyze2(tsfb, a,
JPC_CEILDIVPOW2(xstart, 1),
JPC_CEILDIVPOW2(ystart, 1),
JPC_CEILDIVPOW2(xstart + width, 1) - JPC_CEILDIVPOW2(xstart, 1),
JPC_CEILDIVPOW2(ystart + height, 1) - JPC_CEILDIVPOW2(ystart, 1),
stride, numlvls - 1);
}
int jpc_tsfb_synthesize(jpc_tsfb_t *tsfb, jas_seq2d_t *a)
{
if (tsfb->numlvls == 0 || jas_seq2d_empty(a))
return 0;
return jpc_tsfb_synthesize2(tsfb,
jas_seq2d_getref(a, jas_seq2d_xstart(a), jas_seq2d_ystart(a)),
jas_seq2d_xstart(a), jas_seq2d_ystart(a),
jas_seq2d_width(a), jas_seq2d_height(a),
jas_seq2d_rowstep(a),
tsfb->numlvls - 1);
}
static int jpc_tsfb_synthesize2(jpc_tsfb_t *tsfb, jpc_fix_t *a, int xstart, int ystart,
unsigned width, unsigned height, unsigned stride, unsigned numlvls)
{
if (numlvls > 0) {
if (jpc_tsfb_synthesize2(tsfb, a, JPC_CEILDIVPOW2(xstart, 1),
JPC_CEILDIVPOW2(ystart, 1), JPC_CEILDIVPOW2(xstart + width,
1) - JPC_CEILDIVPOW2(xstart, 1), JPC_CEILDIVPOW2(ystart +
height, 1) - JPC_CEILDIVPOW2(ystart, 1), stride, numlvls -
1)) {
return -1;
}
}
if (width == 0 || height == 0)
return 0;
return tsfb->qmfb->synthesize(a, xstart, ystart, width, height, stride);
}
int jpc_tsfb_getbands(jpc_tsfb_t *tsfb, uint_fast32_t xstart,
uint_fast32_t ystart, uint_fast32_t xend, uint_fast32_t yend,
jpc_tsfb_band_t *bands)
{
jpc_tsfb_band_t *band;
band = bands;
if (tsfb->numlvls > 0) {
jpc_tsfb_getbands2(tsfb, xstart, ystart, xstart, ystart, xend, yend,
&band, tsfb->numlvls);
} else {
band->xstart = xstart;
band->ystart = ystart;
band->xend = xend;
band->yend = yend;
band->locxstart = xstart;
band->locystart = ystart;
band->locxend = band->locxstart + band->xend - band->xstart;
band->locyend = band->locystart + band->yend - band->ystart;
band->orient = JPC_TSFB_LL;
band->synenergywt = JPC_FIX_ONE;
++band;
}
return band - bands;
}
static void jpc_tsfb_getbands2(jpc_tsfb_t *tsfb, int locxstart, int locystart,
int xstart, int ystart, int xend, int yend, jpc_tsfb_band_t **bands,
unsigned numlvls)
{
int newxstart;
int newystart;
int newxend;
int newyend;
jpc_tsfb_band_t *band;
newxstart = JPC_CEILDIVPOW2(xstart, 1);
newystart = JPC_CEILDIVPOW2(ystart, 1);
newxend = JPC_CEILDIVPOW2(xend, 1);
newyend = JPC_CEILDIVPOW2(yend, 1);
if (numlvls > 0) {
jpc_tsfb_getbands2(tsfb, locxstart, locystart, newxstart, newystart,
newxend, newyend, bands, numlvls - 1);
band = *bands;
band->xstart = JPC_FLOORDIVPOW2(xstart, 1);
band->ystart = newystart;
band->xend = JPC_FLOORDIVPOW2(xend, 1);
band->yend = newyend;
band->locxstart = locxstart + newxend - newxstart;
band->locystart = locystart;
band->locxend = band->locxstart + band->xend - band->xstart;
band->locyend = band->locystart + band->yend - band->ystart;
band->orient = JPC_TSFB_HL;
band->synenergywt = jpc_dbltofix(tsfb->qmfb->hpenergywts[
tsfb->numlvls - numlvls] * tsfb->qmfb->lpenergywts[
tsfb->numlvls - numlvls]);
++(*bands);
band = *bands;
band->xstart = newxstart;
band->ystart = JPC_FLOORDIVPOW2(ystart, 1);
band->xend = newxend;
band->yend = JPC_FLOORDIVPOW2(yend, 1);
band->locxstart = locxstart;
band->locystart = locystart + newyend - newystart;
band->locxend = band->locxstart + band->xend - band->xstart;
band->locyend = band->locystart + band->yend - band->ystart;
band->orient = JPC_TSFB_LH;
band->synenergywt = jpc_dbltofix(tsfb->qmfb->lpenergywts[
tsfb->numlvls - numlvls] * tsfb->qmfb->hpenergywts[
tsfb->numlvls - numlvls]);
++(*bands);
band = *bands;
band->xstart = JPC_FLOORDIVPOW2(xstart, 1);
band->ystart = JPC_FLOORDIVPOW2(ystart, 1);
band->xend = JPC_FLOORDIVPOW2(xend, 1);
band->yend = JPC_FLOORDIVPOW2(yend, 1);
band->locxstart = locxstart + newxend - newxstart;
band->locystart = locystart + newyend - newystart;
band->locxend = band->locxstart + band->xend - band->xstart;
band->locyend = band->locystart + band->yend - band->ystart;
band->orient = JPC_TSFB_HH;
band->synenergywt = jpc_dbltofix(tsfb->qmfb->hpenergywts[
tsfb->numlvls - numlvls] * tsfb->qmfb->hpenergywts[
tsfb->numlvls - numlvls]);
++(*bands);
} else {
band = *bands;
band->xstart = xstart;
band->ystart = ystart;
band->xend = xend;
band->yend = yend;
band->locxstart = locxstart;
band->locystart = locystart;
band->locxend = band->locxstart + band->xend - band->xstart;
band->locyend = band->locystart + band->yend - band->ystart;
band->orient = JPC_TSFB_LL;
band->synenergywt = jpc_dbltofix(tsfb->qmfb->lpenergywts[
tsfb->numlvls - numlvls - 1] * tsfb->qmfb->lpenergywts[
tsfb->numlvls - numlvls - 1]);
++(*bands);
}
}