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296 lines
11 KiB
C
296 lines
11 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) 2001-2002 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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* $Id: jpc_t1cod.h,v 1.2 2008-05-26 09:40:52 vp153 Exp $
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*/
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#ifndef JPC_T1COD_H
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#define JPC_T1COD_H
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/******************************************************************************\
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* Includes.
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\******************************************************************************/
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#include "jasper/jas_fix.h"
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#include "jasper/jas_math.h"
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#include "jpc_mqcod.h"
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#include "jpc_tsfb.h"
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/******************************************************************************\
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* Constants.
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\******************************************************************************/
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/* The number of bits used to index into various lookup tables. */
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#define JPC_NMSEDEC_BITS 7
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#define JPC_NMSEDEC_FRACBITS (JPC_NMSEDEC_BITS - 1)
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/*
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* Segment types.
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*/
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/* Invalid. */
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#define JPC_SEG_INVALID 0
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/* MQ. */
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#define JPC_SEG_MQ 1
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/* Raw. */
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#define JPC_SEG_RAW 2
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/* The nominal word size. */
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#define JPC_PREC 32
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/* Tier-1 coding pass types. */
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#define JPC_SIGPASS 0 /* significance */
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#define JPC_REFPASS 1 /* refinement */
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#define JPC_CLNPASS 2 /* cleanup */
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/*
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* Per-sample state information for tier-1 coding.
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*/
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/* The northeast neighbour has been found to be significant. */
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#define JPC_NESIG 0x0001
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/* The southeast neighbour has been found to be significant. */
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#define JPC_SESIG 0x0002
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/* The southwest neighbour has been found to be significant. */
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#define JPC_SWSIG 0x0004
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/* The northwest neighbour has been found to be significant. */
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#define JPC_NWSIG 0x0008
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/* The north neighbour has been found to be significant. */
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#define JPC_NSIG 0x0010
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/* The east neighbour has been found to be significant. */
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#define JPC_ESIG 0x0020
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/* The south neighbour has been found to be significant. */
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#define JPC_SSIG 0x0040
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/* The west neighbour has been found to be significant. */
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#define JPC_WSIG 0x0080
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/* The significance mask for 8-connected neighbours. */
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#define JPC_OTHSIGMSK \
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(JPC_NSIG | JPC_NESIG | JPC_ESIG | JPC_SESIG | JPC_SSIG | JPC_SWSIG | JPC_WSIG | JPC_NWSIG)
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/* The significance mask for 4-connected neighbours. */
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#define JPC_PRIMSIGMSK (JPC_NSIG | JPC_ESIG | JPC_SSIG | JPC_WSIG)
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/* The north neighbour is negative in value. */
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#define JPC_NSGN 0x0100
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/* The east neighbour is negative in value. */
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#define JPC_ESGN 0x0200
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/* The south neighbour is negative in value. */
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#define JPC_SSGN 0x0400
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/* The west neighbour is negative in value. */
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#define JPC_WSGN 0x0800
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/* The sign mask for 4-connected neighbours. */
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#define JPC_SGNMSK (JPC_NSGN | JPC_ESGN | JPC_SSGN | JPC_WSGN)
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/* This sample has been found to be significant. */
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#define JPC_SIG 0x1000
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/* The sample has been refined. */
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#define JPC_REFINE 0x2000
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/* This sample has been processed during the significance pass. */
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#define JPC_VISIT 0x4000
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/* The number of aggregation contexts. */
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#define JPC_NUMAGGCTXS 1
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/* The number of zero coding contexts. */
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#define JPC_NUMZCCTXS 9
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/* The number of magnitude contexts. */
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#define JPC_NUMMAGCTXS 3
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/* The number of sign coding contexts. */
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#define JPC_NUMSCCTXS 5
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/* The number of uniform contexts. */
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#define JPC_NUMUCTXS 1
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/* The context ID for the first aggregation context. */
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#define JPC_AGGCTXNO 0
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/* The context ID for the first zero coding context. */
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#define JPC_ZCCTXNO (JPC_AGGCTXNO + JPC_NUMAGGCTXS)
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/* The context ID for the first magnitude context. */
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#define JPC_MAGCTXNO (JPC_ZCCTXNO + JPC_NUMZCCTXS)
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/* The context ID for the first sign coding context. */
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#define JPC_SCCTXNO (JPC_MAGCTXNO + JPC_NUMMAGCTXS)
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/* The context ID for the first uniform context. */
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#define JPC_UCTXNO (JPC_SCCTXNO + JPC_NUMSCCTXS)
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/* The total number of contexts. */
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#define JPC_NUMCTXS (JPC_UCTXNO + JPC_NUMUCTXS)
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/******************************************************************************\
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* External data.
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\******************************************************************************/
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/* These lookup tables are used by various macros/functions. */
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/* Do not access these lookup tables directly. */
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extern int jpc_zcctxnolut[];
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extern int jpc_spblut[];
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extern int jpc_scctxnolut[];
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extern int jpc_magctxnolut[];
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extern jpc_fix_t jpc_refnmsedec[];
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extern jpc_fix_t jpc_signmsedec[];
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extern jpc_fix_t jpc_refnmsedec0[];
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extern jpc_fix_t jpc_signmsedec0[];
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/* The initial settings for the MQ contexts. */
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extern jpc_mqctx_t jpc_mqctxs[];
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/******************************************************************************\
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* Functions and macros.
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\******************************************************************************/
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/* Initialize the MQ contexts. */
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void jpc_initctxs(jpc_mqctx_t *ctxs);
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/* Get the zero coding context. */
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int jpc_getzcctxno(int f, int orient);
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#define JPC_GETZCCTXNO(f, orient) \
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(jpc_zcctxnolut[((orient) << 8) | ((f) & JPC_OTHSIGMSK)])
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/* Get the sign prediction bit. */
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int jpc_getspb(int f);
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#define JPC_GETSPB(f) \
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(jpc_spblut[((f) & (JPC_PRIMSIGMSK | JPC_SGNMSK)) >> 4])
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/* Get the sign coding context. */
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int jpc_getscctxno(int f);
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#define JPC_GETSCCTXNO(f) \
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(jpc_scctxnolut[((f) & (JPC_PRIMSIGMSK | JPC_SGNMSK)) >> 4])
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/* Get the magnitude context. */
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int jpc_getmagctxno(int f);
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#define JPC_GETMAGCTXNO(f) \
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(jpc_magctxnolut[((f) & JPC_OTHSIGMSK) | ((((f) & JPC_REFINE) != 0) << 11)])
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/* Get the normalized MSE reduction for significance passes. */
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#define JPC_GETSIGNMSEDEC(x, bitpos) jpc_getsignmsedec_macro(x, bitpos)
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jpc_fix_t jpc_getsignmsedec_func(jpc_fix_t x, int bitpos);
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#define jpc_getsignmsedec_macro(x, bitpos) \
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((bitpos > JPC_NMSEDEC_FRACBITS) ? jpc_signmsedec[JPC_ASR(x, bitpos - JPC_NMSEDEC_FRACBITS) & JAS_ONES(JPC_NMSEDEC_BITS)] : \
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(jpc_signmsedec0[JPC_ASR(x, bitpos - JPC_NMSEDEC_FRACBITS) & JAS_ONES(JPC_NMSEDEC_BITS)]))
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/* Get the normalized MSE reduction for refinement passes. */
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#define JPC_GETREFNMSEDEC(x, bitpos) jpc_getrefnmsedec_macro(x, bitpos)
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jpc_fix_t jpc_refsignmsedec_func(jpc_fix_t x, int bitpos);
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#define jpc_getrefnmsedec_macro(x, bitpos) \
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((bitpos > JPC_NMSEDEC_FRACBITS) ? jpc_refnmsedec[JPC_ASR(x, bitpos - JPC_NMSEDEC_FRACBITS) & JAS_ONES(JPC_NMSEDEC_BITS)] : \
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(jpc_refnmsedec0[JPC_ASR(x, bitpos - JPC_NMSEDEC_FRACBITS) & JAS_ONES(JPC_NMSEDEC_BITS)]))
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/* Arithmetic shift right (with ability to shift left also). */
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#define JPC_ASR(x, n) \
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(((n) >= 0) ? ((x) >> (n)) : ((x) << (-(n))))
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/* Update the per-sample state information. */
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#define JPC_UPDATEFLAGS4(fp, rowstep, s, vcausalflag) \
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{ \
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register jpc_fix_t *np = (fp) - (rowstep); \
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register jpc_fix_t *sp = (fp) + (rowstep); \
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if ((vcausalflag)) { \
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sp[-1] |= JPC_NESIG; \
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sp[1] |= JPC_NWSIG; \
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if (s) { \
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*sp |= JPC_NSIG | JPC_NSGN; \
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(fp)[-1] |= JPC_ESIG | JPC_ESGN; \
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(fp)[1] |= JPC_WSIG | JPC_WSGN; \
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} else { \
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*sp |= JPC_NSIG; \
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(fp)[-1] |= JPC_ESIG; \
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(fp)[1] |= JPC_WSIG; \
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} \
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} else { \
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np[-1] |= JPC_SESIG; \
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np[1] |= JPC_SWSIG; \
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sp[-1] |= JPC_NESIG; \
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sp[1] |= JPC_NWSIG; \
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if (s) { \
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*np |= JPC_SSIG | JPC_SSGN; \
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*sp |= JPC_NSIG | JPC_NSGN; \
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(fp)[-1] |= JPC_ESIG | JPC_ESGN; \
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(fp)[1] |= JPC_WSIG | JPC_WSGN; \
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} else { \
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*np |= JPC_SSIG; \
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*sp |= JPC_NSIG; \
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(fp)[-1] |= JPC_ESIG; \
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(fp)[1] |= JPC_WSIG; \
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} \
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} \
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}
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/* Initialize the lookup tables used by the codec. */
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void jpc_initluts(void);
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/* Get the nominal gain associated with a particular band. */
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int JPC_NOMINALGAIN(int qmfbid, int numlvls, int lvlno, int orient);
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/* Get the coding pass type. */
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int JPC_PASSTYPE(int passno);
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/* Get the segment type. */
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int JPC_SEGTYPE(int passno, int firstpassno, int bypass);
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/* Get the number of coding passess in the segment. */
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int JPC_SEGPASSCNT(int passno, int firstpassno, int numpasses, int bypass,
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int termall);
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/* Is the coding pass terminated? */
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int JPC_ISTERMINATED(int passno, int firstpassno, int numpasses, int termall,
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int lazy);
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#endif
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