jpc_tsfb.c

用C语言实现的JPEG编码

/*
 * 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,
 * copyright registrations, mask work rights, mask work applications,
 * mask work registrations; (iii) rights relating to the protection of
 * trade secrets and confidential information; (iv) any right analogous
 * to those set forth in subsections (i), (ii), or (iii) and any other
 * proprietary rights relating to intangible property (other than trademark,
 * trade dress, or service mark rights); and (v) divisions, continuations,
 * renewals, reissues and extensions of the foregoing (as and to the extent
 * applicable) now existing, hereafter filed, issued or acquired.
 * 
 * E.  If User commences an infringement action against any Licensor(s) then
 * such Licensor(s) shall have the right to terminate User's license and
 * all sublicenses that have been granted hereunder by User to other parties.
 * 
 * F.  This software is for use only in hardware or software products that
 * are compliant with ISO/IEC 15444-1 (i.e., JPEG-2000 Part 1).  No license
 * or right to this Software is granted for products that do not comply
 * with ISO/IEC 15444-1.  The JPEG-2000 Part 1 standard can be purchased
 * from the ISO.
 * 
 * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE.
 * NO USE OF THE JASPER SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
 * THIS DISCLAIMER.  THE JASPER SOFTWARE IS PROVIDED BY THE LICENSORS AND
 * CONTRIBUTORS UNDER THIS LICENSE ON AN ``AS-IS'' BASIS, WITHOUT WARRANTY
 * OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION,
 * WARRANTIES THAT THE JASPER SOFTWARE IS FREE OF DEFECTS, IS MERCHANTABLE,
 * IS FIT FOR A PARTICULAR PURPOSE OR IS NON-INFRINGING.  THOSE INTENDING
 * TO USE THE JASPER SOFTWARE OR MODIFICATIONS THEREOF FOR USE IN HARDWARE
 * OR SOFTWARE PRODUCTS ARE ADVISED THAT THEIR USE MAY INFRINGE EXISTING
 * PATENTS, COPYRIGHTS, TRADEMARKS, OR OTHER INTELLECTUAL PROPERTY RIGHTS.
 * THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE JASPER SOFTWARE
 * IS WITH THE USER.  SHOULD ANY PART OF THE JASPER SOFTWARE PROVE DEFECTIVE
 * IN ANY RESPECT, THE USER (AND NOT THE INITIAL DEVELOPERS, THE UNIVERSITY
 * OF BRITISH COLUMBIA, IMAGE POWER, INC., MICHAEL DAVID ADAMS, OR ANY
 * OTHER CONTRIBUTOR) SHALL ASSUME THE COST OF ANY NECESSARY SERVICING,
 * REPAIR OR CORRECTION.  UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY,
 * WHETHER TORT (INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE, SHALL THE
 * INITIAL DEVELOPER, THE UNIVERSITY OF BRITISH COLUMBIA, IMAGE POWER, INC.,
 * MICHAEL DAVID ADAMS, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF THE
 * JASPER SOFTWARE, OR ANY SUPPLIER OF ANY OF SUCH PARTIES, BE LIABLE TO
 * THE USER OR ANY OTHER PERSON FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
 * CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT LIMITATION,
 * DAMAGES FOR LOSS OF GOODWILL, WORK STOPPAGE, COMPUTER FAILURE OR
 * MALFUNCTION, OR ANY AND ALL OTHER COMMERCIAL DAMAGES OR LOSSES, EVEN IF
 * SUCH PARTY HAD BEEN INFORMED, OR OUGHT TO HAVE KNOWN, OF THE POSSIBILITY
 * OF SUCH DAMAGES.  THE JASPER SOFTWARE AND UNDERLYING TECHNOLOGY ARE NOT
 * FAULT-TOLERANT AND ARE NOT DESIGNED, MANUFACTURED OR INTENDED FOR USE OR
 * RESALE AS ON-LINE CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING
 * FAIL-SAFE PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES,
 * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT
 * LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
 * JASPER SOFTWARE OR UNDERLYING TECHNOLOGY OR PRODUCT COULD LEAD DIRECTLY
 * TO DEATH, PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE
 * ("HIGH RISK ACTIVITIES").  LICENSOR SPECIFICALLY DISCLAIMS ANY EXPRESS
 * OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.  USER WILL NOT
 * KNOWINGLY USE, DISTRIBUTE OR RESELL THE JASPER SOFTWARE OR UNDERLYING
 * TECHNOLOGY OR PRODUCTS FOR HIGH RISK ACTIVITIES AND WILL ENSURE THAT ITS
 * CUSTOMERS AND END-USERS OF ITS PRODUCTS ARE PROVIDED WITH A COPY OF THE
 * NOTICE SPECIFIED IN THIS SECTION.
 * 
 * __END_OF_JASPER_LICENSE__
 */

/*
 * Tree-Structured Filter Bank (TSFB) Library
 *
 * $Id$
 */

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

#include <assert.h>

#include "jasper/jas_malloc.h"
#include "jasper/jas_seq.h"

#include "jpc_tsfb.h"
#include "jpc_cod.h"
#include "jpc_cs.h"
#include "jpc_util.h"

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

#define	bandnotovind(tsfbnode, x)	((x) / (tsfbnode)->numhchans)
#define	bandnotohind(tsfbnode, x)	((x) % (tsfbnode)->numhchans)

static jpc_tsfb_t *jpc_tsfb_create(void);
static jpc_tsfbnode_t *jpc_tsfbnode_create(void);
static void jpc_tsfbnode_destroy(jpc_tsfbnode_t *node);
static void jpc_tsfbnode_synthesize(jpc_tsfbnode_t *node, int flags, jas_seq2d_t *x);
static void jpc_tsfbnode_analyze(jpc_tsfbnode_t *node, int flags, jas_seq2d_t *x);
static void qmfb2d_getbands(jpc_qmfb1d_t *hqmfb, jpc_qmfb1d_t *vqmfb,
  uint_fast32_t xstart, uint_fast32_t ystart, uint_fast32_t xend,
  uint_fast32_t yend, int maxbands, int *numbandsptr, jpc_tsfbnodeband_t *bands);
static void jpc_tsfbnode_getbandstree(jpc_tsfbnode_t *node, uint_fast32_t posxstart,
  uint_fast32_t posystart, uint_fast32_t xstart, uint_fast32_t ystart,
  uint_fast32_t xend, uint_fast32_t yend, jpc_tsfb_band_t **bands);
static int jpc_tsfbnode_findchild(jpc_tsfbnode_t *parnode, jpc_tsfbnode_t *cldnode);
static int jpc_tsfbnode_getequivfilters(jpc_tsfbnode_t *tsfbnode, int cldind,
  int width, int height, jas_seq_t **vfilter, jas_seq_t **hfilter);

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

jpc_tsfb_t *jpc_tsfb_wavelet(jpc_qmfb1d_t *hqmfb, jpc_qmfb1d_t *vqmfb, int numdlvls)
{
	jpc_tsfb_t *tsfb;
	int dlvlno;
	jpc_tsfbnode_t *curnode;
	jpc_tsfbnode_t *prevnode;
	int childno;
	if (!(tsfb = jpc_tsfb_create())) {
		return 0;
	}
	prevnode = 0;
	for (dlvlno = 0; dlvlno < numdlvls; ++dlvlno) {
		if (!(curnode = jpc_tsfbnode_create())) {
			jpc_tsfb_destroy(tsfb);
			return 0;
		}
		if (prevnode) {
			prevnode->children[0] = curnode;
			++prevnode->numchildren;
			curnode->parent = prevnode;
		} else {
			tsfb->root = curnode;
			curnode->parent = 0;
		}
		if (hqmfb) {
			curnode->numhchans = jpc_qmfb1d_getnumchans(hqmfb);
			if (!(curnode->hqmfb = jpc_qmfb1d_copy(hqmfb))) {
				jpc_tsfb_destroy(tsfb);
				return 0;
			}
		} else {
			curnode->hqmfb = 0;
			curnode->numhchans = 1;
		}
		if (vqmfb) {
			curnode->numvchans = jpc_qmfb1d_getnumchans(vqmfb);
			if (!(curnode->vqmfb = jpc_qmfb1d_copy(vqmfb))) {
				jpc_tsfb_destroy(tsfb);
				return 0;
			}
		} else {
			curnode->vqmfb = 0;
			curnode->numvchans = 1;
		}
		curnode->maxchildren = curnode->numhchans * curnode->numvchans;
		for (childno = 0; childno < curnode->maxchildren;
		  ++childno) {
			curnode->children[childno] = 0;
		}
		prevnode = curnode;
	}
	return tsfb;
}

static jpc_tsfb_t *jpc_tsfb_create()
{
	jpc_tsfb_t *tsfb;
	if (!(tsfb = jas_malloc(sizeof(jpc_tsfb_t)))) {
		return 0;
	}
	tsfb->root = 0;
	return tsfb;
}

void jpc_tsfb_destroy(jpc_tsfb_t *tsfb)
{
	if (tsfb->root) {
		jpc_tsfbnode_destroy(tsfb->root);
	}
	jas_free(tsfb);
}

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

void jpc_tsfb_analyze(jpc_tsfb_t *tsfb, int flags, jas_seq2d_t *x)
{
	if (tsfb->root) {
		jpc_tsfbnode_analyze(tsfb->root, flags, x);
	}
}

static void jpc_tsfbnode_analyze(jpc_tsfbnode_t *node, int flags, jas_seq2d_t *x)
{
	jpc_tsfbnodeband_t nodebands[JPC_TSFB_MAXBANDSPERNODE];
	int numbands;
	jas_seq2d_t *y;
	int bandno;
	jpc_tsfbnodeband_t *band;

	if (node->vqmfb) {
		jpc_qmfb1d_analyze(node->vqmfb, flags | JPC_QMFB1D_VERT, x);
	}
	if (node->hqmfb) {
		jpc_qmfb1d_analyze(node->hqmfb, flags, x);
	}
	if (node->numchildren > 0) {
		qmfb2d_getbands(node->hqmfb, node->vqmfb, jas_seq2d_xstart(x),
		  jas_seq2d_ystart(x), jas_seq2d_xend(x), jas_seq2d_yend(x),
		  JPC_TSFB_MAXBANDSPERNODE, &numbands, nodebands);
		y = jas_seq2d_create(0, 0, 0, 0);
		assert(y);
		for (bandno = 0, band = nodebands; bandno < numbands; ++bandno, ++band) {
			if (node->children[bandno]) {
				if (band->xstart != band->xend && band->ystart != band->yend) {
					jas_seq2d_bindsub(y, x, band->locxstart, band->locystart,
					  band->locxend, band->locyend);
					jas_seq2d_setshift(y, band->xstart, band->ystart);
					jpc_tsfbnode_analyze(node->children[bandno], flags, y);
				}
			}
		}
		jas_matrix_destroy(y);
	}
}

void jpc_tsfb_synthesize(jpc_tsfb_t *tsfb, int flags, jas_seq2d_t *x)
{
	if (tsfb->root) {
		jpc_tsfbnode_synthesize(tsfb->root, flags, x);
	}
}

static void jpc_tsfbnode_synthesize(jpc_tsfbnode_t *node, int flags, jas_seq2d_t *x)
{
	jpc_tsfbnodeband_t nodebands[JPC_TSFB_MAXBANDSPERNODE];
	int numbands;
	jas_seq2d_t *y;
	int bandno;
	jpc_tsfbnodeband_t *band;

	if (node->numchildren > 0) {
		qmfb2d_getbands(node->hqmfb, node->vqmfb, jas_seq2d_xstart(x),
		  jas_seq2d_ystart(x), jas_seq2d_xend(x), jas_seq2d_yend(x),
		  JPC_TSFB_MAXBANDSPERNODE, &numbands, nodebands);
		y = jas_seq2d_create(0, 0, 0, 0);
		for (bandno = 0, band = nodebands; bandno < numbands; ++bandno, ++band) {
			if (node->children[bandno]) {
				if (band->xstart != band->xend && band->ystart != band->yend) {
					jas_seq2d_bindsub(y, x, band->locxstart, band->locystart,
					  band->locxend, band->locyend);
					jas_seq2d_setshift(y, band->xstart, band->ystart);
					jpc_tsfbnode_synthesize(node->children[bandno], flags, y);
				}
			}
		}
		jas_seq2d_destroy(y);
	}
	if (node->hqmfb) {
		jpc_qmfb1d_synthesize(node->hqmfb, flags, x);
	}
	if (node->vqmfb) {
		jpc_qmfb1d_synthesize(node->vqmfb, flags | JPC_QMFB1D_VERT, x);
	}
}

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


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 *savbands;
	savbands = bands;
	if (!tsfb->root) {
		bands[0].xstart = xstart;
		bands[0].ystart = ystart;
		bands[0].xend = xend;
		bands[0].yend = yend;
		bands[0].locxstart = xstart;
		bands[0].locystart = ystart;