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Open Source Computer Vision Library
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581 lines
16 KiB
581 lines
16 KiB
/* |
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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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|
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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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/* |
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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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/******************************************************************************\ |
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* Includes. |
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\******************************************************************************/ |
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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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\******************************************************************************/ |
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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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/******************************************************************************\ |
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* Code. |
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\******************************************************************************/ |
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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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|
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return n; |
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} |
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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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|
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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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|
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return n; |
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} |
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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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|
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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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/* |
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* Decode the packet header. |
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*/ |
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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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|
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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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|
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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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|
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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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|
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jpc_bitstream_inalign(inb, 0, 0); |
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|
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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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|
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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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|
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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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|
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/* decode the packet body. */ |
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|
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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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|
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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)) { |
|
case JPC_MS_EOC: |
|
case JPC_MS_SOT: |
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return 0; |
|
break; |
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case JPC_MS_SOP: |
|
case JPC_MS_EPH: |
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case 0: |
|
break; |
|
default: |
|
return -1; |
|
break; |
|
} |
|
} |
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if ((ret = jpc_pi_next(pi))) { |
|
return ret; |
|
} |
|
if (dec->maxpkts >= 0 && dec->numpkts >= dec->maxpkts) { |
|
jas_eprintf("warning: stopping decode prematurely as requested\n"); |
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return 0; |
|
} |
|
if (jas_getdbglevel() >= 1) { |
|
jas_eprintf("packet offset=%08ld prg=%d cmptno=%02d " |
|
"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), |
|
jpc_pi_prcno(pi), jpc_pi_lyrno(pi))) { |
|
return -1; |
|
} |
|
++dec->numpkts; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
jpc_pi_t *jpc_dec_pi_create(jpc_dec_t *dec, jpc_dec_tile_t *tile) |
|
{ |
|
jpc_pi_t *pi; |
|
int compno; |
|
jpc_picomp_t *picomp; |
|
jpc_pirlvl_t *pirlvl; |
|
jpc_dec_tcomp_t *tcomp; |
|
int rlvlno; |
|
jpc_dec_rlvl_t *rlvl; |
|
int prcno; |
|
int *prclyrno; |
|
jpc_dec_cmpt_t *cmpt; |
|
|
|
if (!(pi = jpc_pi_create0())) { |
|
return 0; |
|
} |
|
pi->numcomps = dec->numcomps; |
|
if (!(pi->picomps = jas_malloc(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_malloc(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_malloc(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; |
|
}
|
|
|