WebSVN - AndroidProjects - Rev 244 - /tools/osframework/source/ImageLib/jpeg2000/jpc

/*
* Copyright (c) 1999-2000 Image Power, Inc. and the University of
* British Columbia.
* Copyright (c) 2001-2003 Michael David Adams.
* All rights reserved.
*/

/* __START_OF_JASPER_LICENSE__
*
* JasPer Software License
*
* IMAGE POWER JPEG-2000 PUBLIC LICENSE
* ************************************
*
* GRANT:
*
* Permission is hereby granted, free of charge, to any person (the "User")
* obtaining a copy of this software and associated documentation, to deal
* in the JasPer Software without restriction, including without limitation
* the right to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the JasPer Software (in source and binary forms),
* and to permit persons to whom the JasPer Software is furnished to do so,
* provided further that the License Conditions below are met.
*
* License Conditions
* ******************
*
* A. Redistributions of source code must retain the above copyright notice,
* and this list of conditions, and the following disclaimer.
*
* B. Redistributions in binary form must reproduce the above copyright
* notice, and this list of conditions, and the following disclaimer in
* the documentation and/or other materials provided with the distribution.
*
* C. Neither the name of Image Power, Inc. nor any other contributor
* (including, but not limited to, the University of British Columbia and
* Michael David Adams) may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* D. User agrees that it shall not commence any action against Image Power,
* Inc., the University of British Columbia, Michael David Adams, or any
* other contributors (collectively "Licensors") for infringement of any
* intellectual property rights ("IPR") held by the User in respect of any
* technology that User owns or has a right to license or sublicense and
* which is an element required in order to claim compliance with ISO/IEC
* 15444-1 (i.e., JPEG-2000 Part 1). "IPR" means all intellectual property
* rights worldwide arising under statutory or common law, and whether
* or not perfected, including, without limitation, all (i) patents and
* patent applications owned or licensable by User; (ii) rights associated
* with works of authorship including copyrights, copyright applications,
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* mask work registrations; (iii) rights relating to the protection of
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* renewals, reissues and extensions of the foregoing (as and to the extent
* applicable) now existing, hereafter filed, issued or acquired.
*
* E. If User commences an infringement action against any Licensor(s) then
* such Licensor(s) shall have the right to terminate User's license and
* all sublicenses that have been granted hereunder by User to other parties.
*
* F. This software is for use only in hardware or software products that
* are compliant with ISO/IEC 15444-1 (i.e., JPEG-2000 Part 1). No license
* or right to this Software is granted for products that do not comply
* with ISO/IEC 15444-1. The JPEG-2000 Part 1 standard can be purchased
* from the ISO.
*
* THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE.
* NO USE OF THE JASPER SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
* THIS DISCLAIMER. THE JASPER SOFTWARE IS PROVIDED BY THE LICENSORS AND
* CONTRIBUTORS UNDER THIS LICENSE ON AN ``AS-IS'' BASIS, WITHOUT WARRANTY
* OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION,
* WARRANTIES THAT THE JASPER SOFTWARE IS FREE OF DEFECTS, IS MERCHANTABLE,
* IS FIT FOR A PARTICULAR PURPOSE OR IS NON-INFRINGING. THOSE INTENDING
* TO USE THE JASPER SOFTWARE OR MODIFICATIONS THEREOF FOR USE IN HARDWARE
* OR SOFTWARE PRODUCTS ARE ADVISED THAT THEIR USE MAY INFRINGE EXISTING
* PATENTS, COPYRIGHTS, TRADEMARKS, OR OTHER INTELLECTUAL PROPERTY RIGHTS.
* THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE JASPER SOFTWARE
* IS WITH THE USER. SHOULD ANY PART OF THE JASPER SOFTWARE PROVE DEFECTIVE
* IN ANY RESPECT, THE USER (AND NOT THE INITIAL DEVELOPERS, THE UNIVERSITY
* OF BRITISH COLUMBIA, IMAGE POWER, INC., MICHAEL DAVID ADAMS, OR ANY
* OTHER CONTRIBUTOR) SHALL ASSUME THE COST OF ANY NECESSARY SERVICING,
* REPAIR OR CORRECTION. UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY,
* WHETHER TORT (INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE, SHALL THE
* INITIAL DEVELOPER, THE UNIVERSITY OF BRITISH COLUMBIA, IMAGE POWER, INC.,
* MICHAEL DAVID ADAMS, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF THE
* JASPER SOFTWARE, OR ANY SUPPLIER OF ANY OF SUCH PARTIES, BE LIABLE TO
* THE USER OR ANY OTHER PERSON FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
* CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT LIMITATION,
* DAMAGES FOR LOSS OF GOODWILL, WORK STOPPAGE, COMPUTER FAILURE OR
* MALFUNCTION, OR ANY AND ALL OTHER COMMERCIAL DAMAGES OR LOSSES, EVEN IF
* SUCH PARTY HAD BEEN INFORMED, OR OUGHT TO HAVE KNOWN, OF THE POSSIBILITY
* OF SUCH DAMAGES. THE JASPER SOFTWARE AND UNDERLYING TECHNOLOGY ARE NOT
* FAULT-TOLERANT AND ARE NOT DESIGNED, MANUFACTURED OR INTENDED FOR USE OR
* RESALE AS ON-LINE CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING
* FAIL-SAFE PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES,
* AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT
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* JASPER SOFTWARE OR UNDERLYING TECHNOLOGY OR PRODUCT COULD LEAD DIRECTLY
* TO DEATH, PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE
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* OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES. USER WILL NOT
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* TECHNOLOGY OR PRODUCTS FOR HIGH RISK ACTIVITIES AND WILL ENSURE THAT ITS
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* NOTICE SPECIFIED IN THIS SECTION.
*
* __END_OF_JASPER_LICENSE__
*/

/*
* $Id: jpc_t1cod.c,v 1.1 2003/05/15 01:30:32 ace Exp $
*/

/******************************************************************************\
* Includes.
\******************************************************************************/

#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <math.h>

#include "jas_types.h"
#include "jas_math.h"

#include "jpc_bs.h"
#include "jpc_dec.h"
#include "jpc_cs.h"
#include "jpc_mqcod.h"
#include "jpc_t1cod.h"
#include "jpc_tsfb.h"

double jpc_pow2i(int n);

/******************************************************************************\
* Global data.
\******************************************************************************/

int jpc_zcctxnolut[4 * 256];
int jpc_spblut[256];
int jpc_scctxnolut[256];
int jpc_magctxnolut[4096];

jpc_fix_t jpc_signmsedec[1 << JPC_NMSEDEC_BITS];
jpc_fix_t jpc_refnmsedec[1 << JPC_NMSEDEC_BITS];
jpc_fix_t jpc_signmsedec0[1 << JPC_NMSEDEC_BITS];
jpc_fix_t jpc_refnmsedec0[1 << JPC_NMSEDEC_BITS];

jpc_mqctx_t jpc_mqctxs[JPC_NUMCTXS];

/******************************************************************************\
*
\******************************************************************************/

void jpc_initmqctxs(void);

/******************************************************************************\
* Code.
\******************************************************************************/

int JPC_PASSTYPE(int passno)
{
int passtype;
switch (passno % 3) {
case 0:
passtype = JPC_CLNPASS;
break;
case 1:
passtype = JPC_SIGPASS;
break;
case 2:
passtype = JPC_REFPASS;
break;
default:
passtype = -1;
assert(0);
break;
}
return passtype;
}

int JPC_NOMINALGAIN(int qmfbid, int numlvls, int lvlno, int orient)
{
/* Avoid compiler warnings about unused parameters. */
numlvls = 0;

if (qmfbid == JPC_COX_INS) {
return 0;
}
assert(qmfbid == JPC_COX_RFT);
if (lvlno == 0) {
assert(orient == JPC_TSFB_LL);
return 0;
} else {
switch (orient) {
case JPC_TSFB_LH:
case JPC_TSFB_HL:
return 1;
break;
case JPC_TSFB_HH:
return 2;
break;
}
}
abort();
}

/******************************************************************************\
* Coding pass related functions.
\******************************************************************************/

int JPC_SEGTYPE(int passno, int firstpassno, int bypass)
{
int passtype;
if (bypass) {
passtype = JPC_PASSTYPE(passno);
if (passtype == JPC_CLNPASS) {
return JPC_SEG_MQ;
}
return ((passno < firstpassno + 10) ? JPC_SEG_MQ : JPC_SEG_RAW);
} else {
return JPC_SEG_MQ;
}
}

int JPC_SEGPASSCNT(int passno, int firstpassno, int numpasses, int bypass, int termall)
{
int ret;
int passtype;

if (termall) {
ret = 1;
} else if (bypass) {
if (passno < firstpassno + 10) {
ret = 10 - (passno - firstpassno);
} else {
passtype = JPC_PASSTYPE(passno);
switch (passtype) {
case JPC_SIGPASS:
ret = 2;
break;
case JPC_REFPASS:
ret = 1;
break;
case JPC_CLNPASS:
ret = 1;
break;
default:
ret = -1;
assert(0);
break;
}
}
} else {
ret = JPC_PREC * 3 - 2;
}
ret = JAS_MIN(ret, numpasses - passno);
return ret;
}

int JPC_ISTERMINATED(int passno, int firstpassno, int numpasses, int termall,
int lazy)
{
int ret;
int n;
if (passno - firstpassno == numpasses - 1) {
ret = 1;
} else {
n = JPC_SEGPASSCNT(passno, firstpassno, numpasses, lazy, termall);
ret = (n <= 1) ? 1 : 0;
}

return ret;
}

/******************************************************************************\
* Lookup table code.
\******************************************************************************/

void jpc_initluts()
{
int i;
int orient;
int refine;
float u;
float v;
float t;

/* XXX - hack */
jpc_initmqctxs();

for (orient = 0; orient < 4; ++orient) {
for (i = 0; i < 256; ++i) {
jpc_zcctxnolut[(orient << 8) | i] = jpc_getzcctxno(i, orient);
}
}

for (i = 0; i < 256; ++i) {
jpc_spblut[i] = jpc_getspb(i << 4);
}

for (i = 0; i < 256; ++i) {
jpc_scctxnolut[i] = jpc_getscctxno(i << 4);
}

for (refine = 0; refine < 2; ++refine) {
for (i = 0; i < 2048; ++i) {
jpc_magctxnolut[(refine << 11) + i] = jpc_getmagctxno((refine ? JPC_REFINE : 0) | i);
}
}

for (i = 0; i < (1 << JPC_NMSEDEC_BITS); ++i) {
t = i * jpc_pow2i(-JPC_NMSEDEC_FRACBITS);
u = t;
v = t - 1.5;
jpc_signmsedec[i] = jpc_dbltofix(floor((u * u - v * v) * jpc_pow2i(JPC_NMSEDEC_FRACBITS) + 0.5) / jpc_pow2i(JPC_NMSEDEC_FRACBITS));
/* XXX - this calc is not correct */
jpc_signmsedec0[i] = jpc_dbltofix(floor((u * u) * jpc_pow2i(JPC_NMSEDEC_FRACBITS) + 0.5) / jpc_pow2i(JPC_NMSEDEC_FRACBITS));
u = t - 1.0;
if (i & (1 << (JPC_NMSEDEC_BITS - 1))) {
v = t - 1.5;
} else {
v = t - 0.5;
}
jpc_refnmsedec[i] = jpc_dbltofix(floor((u * u - v * v) * jpc_pow2i(JPC_NMSEDEC_FRACBITS) + 0.5) / jpc_pow2i(JPC_NMSEDEC_FRACBITS));
/* XXX - this calc is not correct */
jpc_refnmsedec0[i] = jpc_dbltofix(floor((u * u) * jpc_pow2i(JPC_NMSEDEC_FRACBITS) + 0.5) / jpc_pow2i(JPC_NMSEDEC_FRACBITS));
}
}

jpc_fix_t jpc_getsignmsedec_func(jpc_fix_t x, int bitpos)
{
jpc_fix_t y;
assert(!(x & (~JAS_ONES(bitpos + 1))));
y = jpc_getsignmsedec_macro(x, bitpos);
return y;
}

int jpc_getzcctxno(int f, int orient)
{
int h;
int v;
int d;
int n;
int t;
int hv;

/* Avoid compiler warning. */
n = 0;

h = ((f & JPC_WSIG) != 0) + ((f & JPC_ESIG) != 0);
v = ((f & JPC_NSIG) != 0) + ((f & JPC_SSIG) != 0);
d = ((f & JPC_NWSIG) != 0) + ((f & JPC_NESIG) != 0) + ((f & JPC_SESIG) != 0) + ((f & JPC_SWSIG) != 0);
switch (orient) {
case JPC_TSFB_HL:
t = h;
h = v;
v = t;
case JPC_TSFB_LL:
case JPC_TSFB_LH:
if (!h) {
if (!v) {
if (!d) {
n = 0;
} else if (d == 1) {
n = 1;
} else {
n = 2;
}
} else if (v == 1) {
n = 3;
} else {
n = 4;
}
} else if (h == 1) {
if (!v) {
if (!d) {
n = 5;
} else {
n = 6;
}
} else {
n = 7;
}
} else {
n = 8;
}
break;
case JPC_TSFB_HH:
hv = h + v;
if (!d) {
if (!hv) {
n = 0;
} else if (hv == 1) {
n = 1;
} else {
n = 2;
}
} else if (d == 1) {
if (!hv) {
n = 3;
} else if (hv == 1) {
n = 4;
} else {
n = 5;
}
} else if (d == 2) {
if (!hv) {
n = 6;
} else {
n = 7;
}
} else {
n = 8;
}
break;
}
assert(n < JPC_NUMZCCTXS);
return JPC_ZCCTXNO + n;
}

int jpc_getspb(int f)
{
int hc;
int vc;
int n;

hc = JAS_MIN(((f & (JPC_ESIG | JPC_ESGN)) == JPC_ESIG) + ((f & (JPC_WSIG | JPC_WSGN)) == JPC_WSIG), 1) -
JAS_MIN(((f & (JPC_ESIG | JPC_ESGN)) == (JPC_ESIG | JPC_ESGN)) + ((f & (JPC_WSIG | JPC_WSGN)) == (JPC_WSIG | JPC_WSGN)), 1);
vc = JAS_MIN(((f & (JPC_NSIG | JPC_NSGN)) == JPC_NSIG) + ((f & (JPC_SSIG | JPC_SSGN)) == JPC_SSIG), 1) -
JAS_MIN(((f & (JPC_NSIG | JPC_NSGN)) == (JPC_NSIG | JPC_NSGN)) + ((f & (JPC_SSIG | JPC_SSGN)) == (JPC_SSIG | JPC_SSGN)), 1);
if (!hc && !vc) {
n = 0;
} else {
n = (!(hc > 0 || (!hc && vc > 0)));
}
return n;
}

int jpc_getscctxno(int f)
{
int hc;
int vc;
int n;

/* Avoid compiler warning. */
n = 0;

hc = JAS_MIN(((f & (JPC_ESIG | JPC_ESGN)) == JPC_ESIG) + ((f & (JPC_WSIG | JPC_WSGN)) == JPC_WSIG),
1) - JAS_MIN(((f & (JPC_ESIG | JPC_ESGN)) == (JPC_ESIG | JPC_ESGN)) +
((f & (JPC_WSIG | JPC_WSGN)) == (JPC_WSIG | JPC_WSGN)), 1);
vc = JAS_MIN(((f & (JPC_NSIG | JPC_NSGN)) == JPC_NSIG) + ((f & (JPC_SSIG | JPC_SSGN)) == JPC_SSIG),
1) - JAS_MIN(((f & (JPC_NSIG | JPC_NSGN)) == (JPC_NSIG | JPC_NSGN)) +
((f & (JPC_SSIG | JPC_SSGN)) == (JPC_SSIG | JPC_SSGN)), 1);
assert(hc >= -1 && hc <= 1 && vc >= -1 && vc <= 1);
if (hc < 0) {
hc = -hc;
vc = -vc;
}
if (!hc) {
if (vc == -1) {
n = 1;
} else if (!vc) {
n = 0;
} else {
n = 1;
}
} else if (hc == 1) {
if (vc == -1) {
n = 2;
} else if (!vc) {
n = 3;
} else {
n = 4;
}
}
assert(n < JPC_NUMSCCTXS);
return JPC_SCCTXNO + n;
}

int jpc_getmagctxno(int f)
{
int n;

if (!(f & JPC_REFINE)) {
n = (f & (JPC_OTHSIGMSK)) ? 1 : 0;
} else {
n = 2;
}

assert(n < JPC_NUMMAGCTXS);
return JPC_MAGCTXNO + n;
}

void jpc_initctxs(jpc_mqctx_t *ctxs)
{
jpc_mqctx_t *ctx;
int i;

ctx = ctxs;
for (i = 0; i < JPC_NUMCTXS; ++i) {
ctx->mps = 0;
switch (i) {
case JPC_UCTXNO:
ctx->ind = 46;
break;
case JPC_ZCCTXNO:
ctx->ind = 4;
break;
case JPC_AGGCTXNO:
ctx->ind = 3;
break;
default:
ctx->ind = 0;
break;
}
++ctx;
}
}

void jpc_initmqctxs()
{
jpc_initctxs(jpc_mqctxs);
}

/* Calculate the real quantity exp2(n), where x is an integer. */
double jpc_pow2i(int n)
{
double x;
double a;

x = 1.0;
if (n < 0) {
a = 0.5;
n = -n;
} else {
a = 2.0;
}
while (--n >= 0) {
x *= a;
}
return x;
}

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