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295 lines
11 KiB
295 lines
11 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) 2001-2002 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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