/* * Copyright (c) 1999-2000 Image Power, Inc. and the University of * British Columbia. * Copyright (c) 2001-2002 Michael David Adams. * All rights reserved. */ /* __START_OF_JASPER_LICENSE__ * * JasPer License Version 2.0 * * Copyright (c) 1999-2000 Image Power, Inc. * Copyright (c) 1999-2000 The University of British Columbia * Copyright (c) 2001-2003 Michael David Adams * * All rights reserved. * * Permission is hereby granted, free of charge, to any person (the * "User") obtaining a copy of this software and associated documentation * files (the "Software"), to deal in the Software without restriction, * including without limitation the rights to use, copy, modify, merge, * publish, distribute, and/or sell copies of the Software, and to permit * persons to whom the Software is furnished to do so, subject to the * following conditions: * * 1. The above copyright notices and this permission notice (which * includes the disclaimer below) shall be included in all copies or * substantial portions of the Software. * * 2. The name of a copyright holder shall not be used to endorse or * promote products derived from the Software without specific prior * written permission. * * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS * LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER * THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY. * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL * PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES, * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH, * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH * RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES. * * __END_OF_JASPER_LICENSE__ */ /* * $Id: jpc_t1cod.h,v 1.2 2005/06/11 02:05:31 malaterre Exp $ */ #ifndef JPC_T1COD_H #define JPC_T1COD_H /******************************************************************************\ * Includes. \******************************************************************************/ #include "jasper/jas_fix.h" #include "jasper/jas_math.h" #include "jpc_mqcod.h" #include "jpc_tsfb.h" /******************************************************************************\ * Constants. \******************************************************************************/ /* The number of bits used to index into various lookup tables. */ #define JPC_NMSEDEC_BITS 7 #define JPC_NMSEDEC_FRACBITS (JPC_NMSEDEC_BITS - 1) /* * Segment types. */ /* Invalid. */ #define JPC_SEG_INVALID 0 /* MQ. */ #define JPC_SEG_MQ 1 /* Raw. */ #define JPC_SEG_RAW 2 /* The nominal word size. */ #define JPC_PREC 32 /* Tier-1 coding pass types. */ #define JPC_SIGPASS 0 /* significance */ #define JPC_REFPASS 1 /* refinement */ #define JPC_CLNPASS 2 /* cleanup */ /* * Per-sample state information for tier-1 coding. */ /* The northeast neighbour has been found to be significant. */ #define JPC_NESIG 0x0001 /* The southeast neighbour has been found to be significant. */ #define JPC_SESIG 0x0002 /* The southwest neighbour has been found to be significant. */ #define JPC_SWSIG 0x0004 /* The northwest neighbour has been found to be significant. */ #define JPC_NWSIG 0x0008 /* The north neighbour has been found to be significant. */ #define JPC_NSIG 0x0010 /* The east neighbour has been found to be significant. */ #define JPC_ESIG 0x0020 /* The south neighbour has been found to be significant. */ #define JPC_SSIG 0x0040 /* The west neighbour has been found to be significant. */ #define JPC_WSIG 0x0080 /* The significance mask for 8-connected neighbours. */ #define JPC_OTHSIGMSK \ (JPC_NSIG | JPC_NESIG | JPC_ESIG | JPC_SESIG | JPC_SSIG | JPC_SWSIG | JPC_WSIG | JPC_NWSIG) /* The significance mask for 4-connected neighbours. */ #define JPC_PRIMSIGMSK (JPC_NSIG | JPC_ESIG | JPC_SSIG | JPC_WSIG) /* The north neighbour is negative in value. */ #define JPC_NSGN 0x0100 /* The east neighbour is negative in value. */ #define JPC_ESGN 0x0200 /* The south neighbour is negative in value. */ #define JPC_SSGN 0x0400 /* The west neighbour is negative in value. */ #define JPC_WSGN 0x0800 /* The sign mask for 4-connected neighbours. */ #define JPC_SGNMSK (JPC_NSGN | JPC_ESGN | JPC_SSGN | JPC_WSGN) /* This sample has been found to be significant. */ #define JPC_SIG 0x1000 /* The sample has been refined. */ #define JPC_REFINE 0x2000 /* This sample has been processed during the significance pass. */ #define JPC_VISIT 0x4000 /* The number of aggregation contexts. */ #define JPC_NUMAGGCTXS 1 /* The number of zero coding contexts. */ #define JPC_NUMZCCTXS 9 /* The number of magnitude contexts. */ #define JPC_NUMMAGCTXS 3 /* The number of sign coding contexts. */ #define JPC_NUMSCCTXS 5 /* The number of uniform contexts. */ #define JPC_NUMUCTXS 1 /* The context ID for the first aggregation context. */ #define JPC_AGGCTXNO 0 /* The context ID for the first zero coding context. */ #define JPC_ZCCTXNO (JPC_AGGCTXNO + JPC_NUMAGGCTXS) /* The context ID for the first magnitude context. */ #define JPC_MAGCTXNO (JPC_ZCCTXNO + JPC_NUMZCCTXS) /* The context ID for the first sign coding context. */ #define JPC_SCCTXNO (JPC_MAGCTXNO + JPC_NUMMAGCTXS) /* The context ID for the first uniform context. */ #define JPC_UCTXNO (JPC_SCCTXNO + JPC_NUMSCCTXS) /* The total number of contexts. */ #define JPC_NUMCTXS (JPC_UCTXNO + JPC_NUMUCTXS) /******************************************************************************\ * External data. \******************************************************************************/ /* These lookup tables are used by various macros/functions. */ /* Do not access these lookup tables directly. */ extern int jpc_zcctxnolut[4 * 256]; extern int jpc_spblut[]; extern int jpc_scctxnolut[]; extern int jpc_magctxnolut[]; extern jpc_fix_t jpc_refnmsedec[]; extern jpc_fix_t jpc_signmsedec[]; extern jpc_fix_t jpc_refnmsedec0[]; extern jpc_fix_t jpc_signmsedec0[]; /* The initial settings for the MQ contexts. */ extern jpc_mqctx_t jpc_mqctxs[]; /******************************************************************************\ * Functions and macros. \******************************************************************************/ /* Initialize the MQ contexts. */ void jpc_initctxs(jpc_mqctx_t *ctxs); /* Get the zero coding context. */ int jpc_getzcctxno(int f, int orient); #define JPC_GETZCCTXNO(f, orient) \ (jpc_zcctxnolut[((orient) << 8) | ((f) & JPC_OTHSIGMSK)]) /* Get the sign prediction bit. */ int jpc_getspb(int f); #define JPC_GETSPB(f) \ (jpc_spblut[((f) & (JPC_PRIMSIGMSK | JPC_SGNMSK)) >> 4]) /* Get the sign coding context. */ int jpc_getscctxno(int f); #define JPC_GETSCCTXNO(f) \ (jpc_scctxnolut[((f) & (JPC_PRIMSIGMSK | JPC_SGNMSK)) >> 4]) /* Get the magnitude context. */ int jpc_getmagctxno(int f); #define JPC_GETMAGCTXNO(f) \ (jpc_magctxnolut[((f) & JPC_OTHSIGMSK) | ((((f) & JPC_REFINE) != 0) << 11)]) /* Get the normalized MSE reduction for significance passes. */ #define JPC_GETSIGNMSEDEC(x, bitpos) jpc_getsignmsedec_macro(x, bitpos) jpc_fix_t jpc_getsignmsedec_func(jpc_fix_t x, int bitpos); #define jpc_getsignmsedec_macro(x, bitpos) \ ((bitpos > JPC_NMSEDEC_FRACBITS) ? jpc_signmsedec[JPC_ASR(x, bitpos - JPC_NMSEDEC_FRACBITS) & JAS_ONES(JPC_NMSEDEC_BITS)] : \ (jpc_signmsedec0[JPC_ASR(x, bitpos - JPC_NMSEDEC_FRACBITS) & JAS_ONES(JPC_NMSEDEC_BITS)])) /* Get the normalized MSE reduction for refinement passes. */ #define JPC_GETREFNMSEDEC(x, bitpos) jpc_getrefnmsedec_macro(x, bitpos) jpc_fix_t jpc_refsignmsedec_func(jpc_fix_t x, int bitpos); #define jpc_getrefnmsedec_macro(x, bitpos) \ ((bitpos > JPC_NMSEDEC_FRACBITS) ? jpc_refnmsedec[JPC_ASR(x, bitpos - JPC_NMSEDEC_FRACBITS) & JAS_ONES(JPC_NMSEDEC_BITS)] : \ (jpc_refnmsedec0[JPC_ASR(x, bitpos - JPC_NMSEDEC_FRACBITS) & JAS_ONES(JPC_NMSEDEC_BITS)])) /* Arithmetic shift right (with ability to shift left also). */ #define JPC_ASR(x, n) \ (((n) >= 0) ? ((x) >> (n)) : ((x) << (-(n)))) /* Update the per-sample state information. */ #define JPC_UPDATEFLAGS4(fp, rowstep, s, vcausalflag) \ { \ register jpc_fix_t *np = (fp) - (rowstep); \ register jpc_fix_t *sp = (fp) + (rowstep); \ if ((vcausalflag)) { \ sp[-1] |= JPC_NESIG; \ sp[1] |= JPC_NWSIG; \ if (s) { \ *sp |= JPC_NSIG | JPC_NSGN; \ (fp)[-1] |= JPC_ESIG | JPC_ESGN; \ (fp)[1] |= JPC_WSIG | JPC_WSGN; \ } else { \ *sp |= JPC_NSIG; \ (fp)[-1] |= JPC_ESIG; \ (fp)[1] |= JPC_WSIG; \ } \ } else { \ np[-1] |= JPC_SESIG; \ np[1] |= JPC_SWSIG; \ sp[-1] |= JPC_NESIG; \ sp[1] |= JPC_NWSIG; \ if (s) { \ *np |= JPC_SSIG | JPC_SSGN; \ *sp |= JPC_NSIG | JPC_NSGN; \ (fp)[-1] |= JPC_ESIG | JPC_ESGN; \ (fp)[1] |= JPC_WSIG | JPC_WSGN; \ } else { \ *np |= JPC_SSIG; \ *sp |= JPC_NSIG; \ (fp)[-1] |= JPC_ESIG; \ (fp)[1] |= JPC_WSIG; \ } \ } \ } /* Initialize the lookup tables used by the codec. */ void jpc_initluts(void); /* Get the nominal gain associated with a particular band. */ int JPC_NOMINALGAIN(int qmfbid, int numlvls, int lvlno, int orient); /* Get the coding pass type. */ int JPC_PASSTYPE(int passno); /* Get the segment type. */ int JPC_SEGTYPE(int passno, int firstpassno, int bypass); /* Get the number of coding passess in the segment. */ int JPC_SEGPASSCNT(int passno, int firstpassno, int numpasses, int bypass, int termall); /* Is the coding pass terminated? */ int JPC_ISTERMINATED(int passno, int firstpassno, int numpasses, int termall, int lazy); #endif