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582 lines
19 KiB
C
582 lines
19 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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* Tier 2 Decoder
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*
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* $Id: jpc_t2dec.c,v 1.2 2008-05-26 09:40:52 vp153 Exp $
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*/
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/******************************************************************************\
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* Includes.
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\******************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include "jasper/jas_types.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 "jasper/jas_stream.h"
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#include "jasper/jas_debug.h"
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#include "jpc_bs.h"
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#include "jpc_dec.h"
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#include "jpc_cs.h"
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#include "jpc_mqdec.h"
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#include "jpc_t2dec.h"
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#include "jpc_t1cod.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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long jpc_dec_lookahead(jas_stream_t *in);
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static int jpc_getcommacode(jpc_bitstream_t *in);
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static int jpc_getnumnewpasses(jpc_bitstream_t *in);
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static int jpc_dec_decodepkt(jpc_dec_t *dec, jas_stream_t *pkthdrstream, jas_stream_t *in, int compno, int lvlno,
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int prcno, int lyrno);
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/******************************************************************************\
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* Code.
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\******************************************************************************/
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static int jpc_getcommacode(jpc_bitstream_t *in)
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{
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int n;
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int v;
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n = 0;
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for (;;) {
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if ((v = jpc_bitstream_getbit(in)) < 0) {
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return -1;
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}
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if (jpc_bitstream_eof(in)) {
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return -1;
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}
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if (!v) {
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break;
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}
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++n;
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}
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return n;
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}
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static int jpc_getnumnewpasses(jpc_bitstream_t *in)
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{
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int n;
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if ((n = jpc_bitstream_getbit(in)) > 0) {
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if ((n = jpc_bitstream_getbit(in)) > 0) {
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if ((n = jpc_bitstream_getbits(in, 2)) == 3) {
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if ((n = jpc_bitstream_getbits(in, 5)) == 31) {
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if ((n = jpc_bitstream_getbits(in, 7)) >= 0) {
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n += 36 + 1;
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}
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} else if (n >= 0) {
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n += 5 + 1;
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}
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} else if (n >= 0) {
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n += 2 + 1;
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}
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} else if (!n) {
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n += 2;
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}
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} else if (!n) {
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++n;
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}
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return n;
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}
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static int jpc_dec_decodepkt(jpc_dec_t *dec, jas_stream_t *pkthdrstream, jas_stream_t *in, int compno, int rlvlno,
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int prcno, int lyrno)
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{
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jpc_bitstream_t *inb;
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jpc_dec_tcomp_t *tcomp;
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jpc_dec_rlvl_t *rlvl;
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jpc_dec_band_t *band;
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jpc_dec_cblk_t *cblk;
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int n;
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int m;
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int i;
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jpc_tagtreenode_t *leaf;
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int included;
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int ret;
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int numnewpasses;
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jpc_dec_seg_t *seg;
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int len;
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int present;
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int savenumnewpasses;
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int mycounter;
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jpc_ms_t *ms;
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jpc_dec_tile_t *tile;
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jpc_dec_ccp_t *ccp;
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jpc_dec_cp_t *cp;
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int bandno;
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jpc_dec_prc_t *prc;
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int usedcblkcnt;
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int cblkno;
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uint_fast32_t bodylen;
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bool discard;
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int passno;
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int maxpasses;
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int hdrlen;
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int hdroffstart;
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int hdroffend;
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/* Avoid compiler warning about possible use of uninitialized
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variable. */
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bodylen = 0;
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discard = (lyrno >= dec->maxlyrs);
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tile = dec->curtile;
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cp = tile->cp;
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ccp = &cp->ccps[compno];
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/*
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* Decode the packet header.
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*/
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/* Decode the SOP marker segment if present. */
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if (cp->csty & JPC_COD_SOP) {
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if (jpc_dec_lookahead(in) == JPC_MS_SOP) {
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if (!(ms = jpc_getms(in, dec->cstate))) {
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return -1;
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}
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if (jpc_ms_gettype(ms) != JPC_MS_SOP) {
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jpc_ms_destroy(ms);
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jas_eprintf("missing SOP marker segment\n");
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return -1;
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}
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jpc_ms_destroy(ms);
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}
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}
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hdroffstart = jas_stream_getrwcount(pkthdrstream);
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if (!(inb = jpc_bitstream_sopen(pkthdrstream, "r"))) {
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return -1;
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}
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if ((present = jpc_bitstream_getbit(inb)) < 0) {
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return 1;
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}
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JAS_DBGLOG(10, ("\n", present));
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JAS_DBGLOG(10, ("present=%d ", present));
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/* Is the packet non-empty? */
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if (present) {
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/* The packet is non-empty. */
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tcomp = &tile->tcomps[compno];
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rlvl = &tcomp->rlvls[rlvlno];
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bodylen = 0;
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for (bandno = 0, band = rlvl->bands; bandno < rlvl->numbands;
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++bandno, ++band) {
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if (!band->data) {
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continue;
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}
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prc = &band->prcs[prcno];
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if (!prc->cblks) {
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continue;
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}
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usedcblkcnt = 0;
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for (cblkno = 0, cblk = prc->cblks; cblkno < prc->numcblks;
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++cblkno, ++cblk) {
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++usedcblkcnt;
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if (!cblk->numpasses) {
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leaf = jpc_tagtree_getleaf(prc->incltagtree, usedcblkcnt - 1);
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if ((included = jpc_tagtree_decode(prc->incltagtree, leaf, lyrno + 1, inb)) < 0) {
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return -1;
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}
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} else {
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if ((included = jpc_bitstream_getbit(inb)) < 0) {
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return -1;
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}
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}
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JAS_DBGLOG(10, ("\n"));
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JAS_DBGLOG(10, ("included=%d ", included));
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if (!included) {
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continue;
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}
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if (!cblk->numpasses) {
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i = 1;
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leaf = jpc_tagtree_getleaf(prc->numimsbstagtree, usedcblkcnt - 1);
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for (;;) {
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if ((ret = jpc_tagtree_decode(prc->numimsbstagtree, leaf, i, inb)) < 0) {
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return -1;
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}
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if (ret) {
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break;
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}
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++i;
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}
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cblk->numimsbs = i - 1;
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cblk->firstpassno = cblk->numimsbs * 3;
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}
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if ((numnewpasses = jpc_getnumnewpasses(inb)) < 0) {
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return -1;
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}
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JAS_DBGLOG(10, ("numnewpasses=%d ", numnewpasses));
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seg = cblk->curseg;
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savenumnewpasses = numnewpasses;
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mycounter = 0;
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if (numnewpasses > 0) {
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if ((m = jpc_getcommacode(inb)) < 0) {
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return -1;
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}
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cblk->numlenbits += m;
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JAS_DBGLOG(10, ("increment=%d ", m));
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while (numnewpasses > 0) {
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passno = cblk->firstpassno + cblk->numpasses + mycounter;
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/* XXX - the maxpasses is not set precisely but this doesn't matter... */
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maxpasses = JPC_SEGPASSCNT(passno, cblk->firstpassno, 10000, (ccp->cblkctx & JPC_COX_LAZY) != 0, (ccp->cblkctx & JPC_COX_TERMALL) != 0);
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if (!discard && !seg) {
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if (!(seg = jpc_seg_alloc())) {
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return -1;
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}
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jpc_seglist_insert(&cblk->segs, cblk->segs.tail, seg);
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if (!cblk->curseg) {
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cblk->curseg = seg;
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}
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seg->passno = passno;
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seg->type = JPC_SEGTYPE(seg->passno, cblk->firstpassno, (ccp->cblkctx & JPC_COX_LAZY) != 0);
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seg->maxpasses = maxpasses;
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}
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n = JAS_MIN(numnewpasses, maxpasses);
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mycounter += n;
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numnewpasses -= n;
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if ((len = jpc_bitstream_getbits(inb, cblk->numlenbits + jpc_floorlog2(n))) < 0) {
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return -1;
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}
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JAS_DBGLOG(10, ("len=%d ", len));
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if (!discard) {
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seg->lyrno = lyrno;
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seg->numpasses += n;
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seg->cnt = len;
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seg = seg->next;
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}
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bodylen += len;
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}
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}
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cblk->numpasses += savenumnewpasses;
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}
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}
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jpc_bitstream_inalign(inb, 0, 0);
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} else {
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if (jpc_bitstream_inalign(inb, 0x7f, 0)) {
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jas_eprintf("alignment failed\n");
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return -1;
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}
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}
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jpc_bitstream_close(inb);
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hdroffend = jas_stream_getrwcount(pkthdrstream);
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hdrlen = hdroffend - hdroffstart;
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if (jas_getdbglevel() >= 5) {
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jas_eprintf("hdrlen=%lu bodylen=%lu \n", (unsigned long) hdrlen,
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(unsigned long) bodylen);
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}
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if (cp->csty & JPC_COD_EPH) {
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if (jpc_dec_lookahead(pkthdrstream) == JPC_MS_EPH) {
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if (!(ms = jpc_getms(pkthdrstream, dec->cstate))) {
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jas_eprintf("cannot get (EPH) marker segment\n");
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return -1;
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}
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if (jpc_ms_gettype(ms) != JPC_MS_EPH) {
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jpc_ms_destroy(ms);
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jas_eprintf("missing EPH marker segment\n");
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return -1;
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}
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jpc_ms_destroy(ms);
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}
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}
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/* decode the packet body. */
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if (jas_getdbglevel() >= 1) {
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jas_eprintf("packet body offset=%06ld\n", (long) jas_stream_getrwcount(in));
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}
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if (!discard) {
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tcomp = &tile->tcomps[compno];
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rlvl = &tcomp->rlvls[rlvlno];
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for (bandno = 0, band = rlvl->bands; bandno < rlvl->numbands;
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++bandno, ++band) {
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if (!band->data) {
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continue;
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}
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prc = &band->prcs[prcno];
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if (!prc->cblks) {
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continue;
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}
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for (cblkno = 0, cblk = prc->cblks; cblkno < prc->numcblks;
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++cblkno, ++cblk) {
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seg = cblk->curseg;
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while (seg) {
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if (!seg->stream) {
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if (!(seg->stream = jas_stream_memopen(0, 0))) {
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return -1;
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}
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}
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#if 0
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jas_eprintf("lyrno=%02d, compno=%02d, lvlno=%02d, prcno=%02d, bandno=%02d, cblkno=%02d, passno=%02d numpasses=%02d cnt=%d numbps=%d, numimsbs=%d\n", lyrno, compno, rlvlno, prcno, band - rlvl->bands, cblk - prc->cblks, seg->passno, seg->numpasses, seg->cnt, band->numbps, cblk->numimsbs);
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#endif
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if (seg->cnt > 0) {
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if (jpc_getdata(in, seg->stream, seg->cnt) < 0) {
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return -1;
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}
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seg->cnt = 0;
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}
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if (seg->numpasses >= seg->maxpasses) {
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cblk->curseg = seg->next;
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}
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seg = seg->next;
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}
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}
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}
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} else {
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if (jas_stream_gobble(in, bodylen) != JAS_CAST(int, bodylen)) {
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return -1;
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}
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}
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return 0;
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}
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/********************************************************************************************/
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/********************************************************************************************/
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int jpc_dec_decodepkts(jpc_dec_t *dec, jas_stream_t *pkthdrstream, jas_stream_t *in)
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{
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jpc_dec_tile_t *tile;
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jpc_pi_t *pi;
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int ret;
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tile = dec->curtile;
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pi = tile->pi;
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for (;;) {
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if (!tile->pkthdrstream || jas_stream_peekc(tile->pkthdrstream) == EOF) {
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switch (jpc_dec_lookahead(in)) {
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case JPC_MS_EOC:
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case JPC_MS_SOT:
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return 0;
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break;
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case JPC_MS_SOP:
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case JPC_MS_EPH:
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case 0:
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break;
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default:
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return -1;
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break;
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}
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}
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if ((ret = jpc_pi_next(pi))) {
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return ret;
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}
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if (dec->maxpkts >= 0 && dec->numpkts >= dec->maxpkts) {
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jas_eprintf("warning: stopping decode prematurely as requested\n");
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return 0;
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}
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if (jas_getdbglevel() >= 1) {
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jas_eprintf("packet offset=%08ld prg=%d cmptno=%02d "
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"rlvlno=%02d prcno=%03d lyrno=%02d\n", (long)
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jas_stream_getrwcount(in), jpc_pi_prg(pi), jpc_pi_cmptno(pi),
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jpc_pi_rlvlno(pi), jpc_pi_prcno(pi), jpc_pi_lyrno(pi));
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}
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if (jpc_dec_decodepkt(dec, pkthdrstream, in, jpc_pi_cmptno(pi), jpc_pi_rlvlno(pi),
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jpc_pi_prcno(pi), jpc_pi_lyrno(pi))) {
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return -1;
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}
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++dec->numpkts;
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}
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return 0;
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}
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jpc_pi_t *jpc_dec_pi_create(jpc_dec_t *dec, jpc_dec_tile_t *tile)
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{
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jpc_pi_t *pi;
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int compno;
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jpc_picomp_t *picomp;
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jpc_pirlvl_t *pirlvl;
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jpc_dec_tcomp_t *tcomp;
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int rlvlno;
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jpc_dec_rlvl_t *rlvl;
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int prcno;
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int *prclyrno;
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jpc_dec_cmpt_t *cmpt;
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|
|
if (!(pi = jpc_pi_create0())) {
|
|
return 0;
|
|
}
|
|
pi->numcomps = dec->numcomps;
|
|
if (!(pi->picomps = jas_alloc2(pi->numcomps, sizeof(jpc_picomp_t)))) {
|
|
jpc_pi_destroy(pi);
|
|
return 0;
|
|
}
|
|
for (compno = 0, picomp = pi->picomps; compno < pi->numcomps; ++compno,
|
|
++picomp) {
|
|
picomp->pirlvls = 0;
|
|
}
|
|
|
|
for (compno = 0, tcomp = tile->tcomps, picomp = pi->picomps;
|
|
compno < pi->numcomps; ++compno, ++tcomp, ++picomp) {
|
|
picomp->numrlvls = tcomp->numrlvls;
|
|
if (!(picomp->pirlvls = jas_alloc2(picomp->numrlvls,
|
|
sizeof(jpc_pirlvl_t)))) {
|
|
jpc_pi_destroy(pi);
|
|
return 0;
|
|
}
|
|
for (rlvlno = 0, pirlvl = picomp->pirlvls; rlvlno <
|
|
picomp->numrlvls; ++rlvlno, ++pirlvl) {
|
|
pirlvl->prclyrnos = 0;
|
|
}
|
|
for (rlvlno = 0, pirlvl = picomp->pirlvls, rlvl = tcomp->rlvls;
|
|
rlvlno < picomp->numrlvls; ++rlvlno, ++pirlvl, ++rlvl) {
|
|
/* XXX sizeof(long) should be sizeof different type */
|
|
pirlvl->numprcs = rlvl->numprcs;
|
|
if (!(pirlvl->prclyrnos = jas_alloc2(pirlvl->numprcs,
|
|
sizeof(long)))) {
|
|
jpc_pi_destroy(pi);
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
pi->maxrlvls = 0;
|
|
for (compno = 0, tcomp = tile->tcomps, picomp = pi->picomps, cmpt =
|
|
dec->cmpts; compno < pi->numcomps; ++compno, ++tcomp, ++picomp,
|
|
++cmpt) {
|
|
picomp->hsamp = cmpt->hstep;
|
|
picomp->vsamp = cmpt->vstep;
|
|
for (rlvlno = 0, pirlvl = picomp->pirlvls, rlvl = tcomp->rlvls;
|
|
rlvlno < picomp->numrlvls; ++rlvlno, ++pirlvl, ++rlvl) {
|
|
pirlvl->prcwidthexpn = rlvl->prcwidthexpn;
|
|
pirlvl->prcheightexpn = rlvl->prcheightexpn;
|
|
for (prcno = 0, prclyrno = pirlvl->prclyrnos;
|
|
prcno < pirlvl->numprcs; ++prcno, ++prclyrno) {
|
|
*prclyrno = 0;
|
|
}
|
|
pirlvl->numhprcs = rlvl->numhprcs;
|
|
}
|
|
if (pi->maxrlvls < tcomp->numrlvls) {
|
|
pi->maxrlvls = tcomp->numrlvls;
|
|
}
|
|
}
|
|
|
|
pi->numlyrs = tile->cp->numlyrs;
|
|
pi->xstart = tile->xstart;
|
|
pi->ystart = tile->ystart;
|
|
pi->xend = tile->xend;
|
|
pi->yend = tile->yend;
|
|
|
|
pi->picomp = 0;
|
|
pi->pirlvl = 0;
|
|
pi->x = 0;
|
|
pi->y = 0;
|
|
pi->compno = 0;
|
|
pi->rlvlno = 0;
|
|
pi->prcno = 0;
|
|
pi->lyrno = 0;
|
|
pi->xstep = 0;
|
|
pi->ystep = 0;
|
|
|
|
pi->pchgno = -1;
|
|
|
|
pi->defaultpchg.prgord = tile->cp->prgord;
|
|
pi->defaultpchg.compnostart = 0;
|
|
pi->defaultpchg.compnoend = pi->numcomps;
|
|
pi->defaultpchg.rlvlnostart = 0;
|
|
pi->defaultpchg.rlvlnoend = pi->maxrlvls;
|
|
pi->defaultpchg.lyrnoend = pi->numlyrs;
|
|
pi->pchg = 0;
|
|
|
|
pi->valid = 0;
|
|
|
|
return pi;
|
|
}
|
|
|
|
long jpc_dec_lookahead(jas_stream_t *in)
|
|
{
|
|
uint_fast16_t x;
|
|
if (jpc_getuint16(in, &x)) {
|
|
return -1;
|
|
}
|
|
if (jas_stream_ungetc(in, x & 0xff) == EOF ||
|
|
jas_stream_ungetc(in, x >> 8) == EOF) {
|
|
return -1;
|
|
}
|
|
if (x >= JPC_MS_INMIN /*&& x <= JPC_MS_INMAX*/) {
|
|
return x;
|
|
}
|
|
return 0;
|
|
}
|