/* * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium * Copyright (c) 2002-2007, Professor Benoit Macq * Copyright (c) 2001-2003, David Janssens * Copyright (c) 2002-2003, Yannick Verschueren * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe * Copyright (c) 2005, Herve Drolon, FreeImage Team * Copyright (c) 2007, Callum Lerwick * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include "opj_includes.h" #include "t1_luts.h" /** @defgroup T1 T1 - Implementation of the tier-1 coding */ /*@{*/ /** @name Local static functions */ /*@{*/ static INLINE char t1_getctxno_zc(int f, int orient); static char t1_getctxno_sc(int f); static INLINE int t1_getctxno_mag(int f); static char t1_getspb(int f); static short t1_getnmsedec_sig(int x, int bitpos); static short t1_getnmsedec_ref(int x, int bitpos); static void t1_updateflags(flag_t *flagsp, int s, int stride); /** Encode significant pass */ static void t1_enc_sigpass_step( opj_t1_t *t1, flag_t *flagsp, int *datap, int orient, int bpno, int one, int *nmsedec, char type, int vsc); /** Decode significant pass */ static void t1_dec_sigpass_step( opj_t1_t *t1, flag_t *flagsp, int *datap, int orient, int oneplushalf, char type, int vsc); /** Encode significant pass */ static void t1_enc_sigpass( opj_t1_t *t1, int bpno, int orient, int *nmsedec, char type, int cblksty); /** Decode significant pass */ static void t1_dec_sigpass( opj_t1_t *t1, int bpno, int orient, char type, int cblksty); /** Encode refinement pass */ static void t1_enc_refpass_step( opj_t1_t *t1, flag_t *flagsp, int *datap, int bpno, int one, int *nmsedec, char type, int vsc); /** Decode refinement pass */ static void t1_dec_refpass_step( opj_t1_t *t1, flag_t *flagsp, int *datap, int poshalf, int neghalf, char type, int vsc); /** Encode refinement pass */ static void t1_enc_refpass( opj_t1_t *t1, int bpno, int *nmsedec, char type, int cblksty); /** Decode refinement pass */ static void t1_dec_refpass( opj_t1_t *t1, int bpno, char type, int cblksty); /** Encode clean-up pass */ static void t1_enc_clnpass_step( opj_t1_t *t1, flag_t *flagsp, int *datap, int orient, int bpno, int one, int *nmsedec, int partial, int vsc); /** Decode clean-up pass */ static void t1_dec_clnpass_step( opj_t1_t *t1, flag_t *flagsp, int *datap, int orient, int oneplushalf, int partial, int vsc); /** Encode clean-up pass */ static void t1_enc_clnpass( opj_t1_t *t1, int bpno, int orient, int *nmsedec, int cblksty); /** Decode clean-up pass */ static void t1_dec_clnpass( opj_t1_t *t1, int bpno, int orient, int cblksty); static double t1_getwmsedec( int nmsedec, int compno, int level, int orient, int bpno, int qmfbid, double stepsize, int numcomps); /** Encode 1 code-block @param t1 T1 handle @param cblk Code-block coding parameters @param orient @param compno Component number @param level @param qmfbid @param stepsize @param cblksty Code-block style @param numcomps @param tile */ static void t1_encode_cblk( opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int compno, int level, int qmfbid, double stepsize, int cblksty, int numcomps, opj_tcd_tile_t * tile); /** Decode 1 code-block @param t1 T1 handle @param cblk Code-block coding parameters @param orient @param roishift Region of interest shifting value @param cblksty Code-block style */ static void t1_decode_cblk( opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int roishift, int cblksty); /*@}*/ /*@}*/ /* ----------------------------------------------------------------------- */ static char t1_getctxno_zc(int f, int orient) { return lut_ctxno_zc[(orient << 8) | (f & T1_SIG_OTH)]; } static char t1_getctxno_sc(int f) { return lut_ctxno_sc[(f & (T1_SIG_PRIM | T1_SGN)) >> 4]; } static int t1_getctxno_mag(int f) { int tmp1 = (f & T1_SIG_OTH) ? T1_CTXNO_MAG + 1 : T1_CTXNO_MAG; int tmp2 = (f & T1_REFINE) ? T1_CTXNO_MAG + 2 : tmp1; return (tmp2); } static char t1_getspb(int f) { return lut_spb[(f & (T1_SIG_PRIM | T1_SGN)) >> 4]; } static short t1_getnmsedec_sig(int x, int bitpos) { if (bitpos > T1_NMSEDEC_FRACBITS) { return lut_nmsedec_sig[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) & ((1 << T1_NMSEDEC_BITS) - 1)]; } return lut_nmsedec_sig0[x & ((1 << T1_NMSEDEC_BITS) - 1)]; } static short t1_getnmsedec_ref(int x, int bitpos) { if (bitpos > T1_NMSEDEC_FRACBITS) { return lut_nmsedec_ref[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) & ((1 << T1_NMSEDEC_BITS) - 1)]; } return lut_nmsedec_ref0[x & ((1 << T1_NMSEDEC_BITS) - 1)]; } static void t1_updateflags(flag_t *flagsp, int s, int stride) { flag_t *np = flagsp - stride; flag_t *sp = flagsp + stride; static const flag_t mod[] = { T1_SIG_S, T1_SIG_S|T1_SGN_S, T1_SIG_E, T1_SIG_E|T1_SGN_E, T1_SIG_W, T1_SIG_W|T1_SGN_W, T1_SIG_N, T1_SIG_N|T1_SGN_N }; np[-1] |= T1_SIG_SE; np[0] |= mod[s]; np[1] |= T1_SIG_SW; flagsp[-1] |= mod[s+2]; flagsp[0] |= T1_SIG; flagsp[1] |= mod[s+4]; sp[-1] |= T1_SIG_NE; sp[0] |= mod[s+6]; sp[1] |= T1_SIG_NW; } static void t1_enc_sigpass_step( opj_t1_t *t1, flag_t *flagsp, int *datap, int orient, int bpno, int one, int *nmsedec, char type, int vsc) { int v, flag; opj_mqc_t *mqc = t1->mqc; /* MQC component */ flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp); if ((flag & T1_SIG_OTH) && !(flag & (T1_SIG | T1_VISIT))) { v = int_abs(*datap) & one ? 1 : 0; mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient)); /* ESSAI */ if (type == T1_TYPE_RAW) { /* BYPASS/LAZY MODE */ mqc_bypass_enc(mqc, v); } else { mqc_encode(mqc, v); } if (v) { v = *datap < 0 ? 1 : 0; *nmsedec += t1_getnmsedec_sig(int_abs(*datap), bpno + T1_NMSEDEC_FRACBITS); mqc_setcurctx(mqc, t1_getctxno_sc(flag)); /* ESSAI */ if (type == T1_TYPE_RAW) { /* BYPASS/LAZY MODE */ mqc_bypass_enc(mqc, v); } else { mqc_encode(mqc, v ^ t1_getspb(flag)); } t1_updateflags(flagsp, v, t1->flags_stride); } *flagsp |= T1_VISIT; } } static void t1_dec_sigpass_step( opj_t1_t *t1, flag_t *flagsp, int *datap, int orient, int oneplushalf, char type, int vsc) { int v, flag; opj_raw_t *raw = t1->raw; /* RAW component */ opj_mqc_t *mqc = t1->mqc; /* MQC component */ flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp); if ((flag & T1_SIG_OTH) && !(flag & (T1_SIG | T1_VISIT))) { if (type == T1_TYPE_RAW) { if (raw_decode(raw)) { v = raw_decode(raw); /* ESSAI */ *datap = v ? -oneplushalf : oneplushalf; t1_updateflags(flagsp, v, t1->flags_stride); } } else { mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient)); if (mqc_decode(mqc)) { mqc_setcurctx(mqc, t1_getctxno_sc(flag)); v = mqc_decode(mqc) ^ t1_getspb(flag); *datap = v ? -oneplushalf : oneplushalf; t1_updateflags(flagsp, v, t1->flags_stride); } } *flagsp |= T1_VISIT; } } /* VSC and BYPASS by Antonin */ static void t1_enc_sigpass( opj_t1_t *t1, int bpno, int orient, int *nmsedec, char type, int cblksty) { int i, j, k, one, vsc; *nmsedec = 0; one = 1 << (bpno + T1_NMSEDEC_FRACBITS); for (k = 0; k < t1->h; k += 4) { for (i = 0; i < t1->w; ++i) { for (j = k; j < k + 4 && j < t1->h; ++j) { vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == t1->h - 1)) ? 1 : 0; t1_enc_sigpass_step( t1, &t1->flags[((j+1) * t1->flags_stride) + i + 1], &t1->data[(j * t1->w) + i], orient, bpno, one, nmsedec, type, vsc); } } } } static void t1_dec_sigpass( opj_t1_t *t1, int bpno, int orient, char type, int cblksty) { int i, j, k, one, half, oneplushalf, vsc; one = 1 << bpno; half = one >> 1; oneplushalf = one | half; for (k = 0; k < t1->h; k += 4) { for (i = 0; i < t1->w; ++i) { for (j = k; j < k + 4 && j < t1->h; ++j) { vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == t1->h - 1)) ? 1 : 0; t1_dec_sigpass_step( t1, &t1->flags[((j+1) * t1->flags_stride) + i + 1], &t1->data[(j * t1->w) + i], orient, oneplushalf, type, vsc); } } } } /* VSC and BYPASS by Antonin */ static void t1_enc_refpass_step( opj_t1_t *t1, flag_t *flagsp, int *datap, int bpno, int one, int *nmsedec, char type, int vsc) { int v, flag; opj_mqc_t *mqc = t1->mqc; /* MQC component */ flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp); if ((flag & (T1_SIG | T1_VISIT)) == T1_SIG) { *nmsedec += t1_getnmsedec_ref(int_abs(*datap), bpno + T1_NMSEDEC_FRACBITS); v = int_abs(*datap) & one ? 1 : 0; mqc_setcurctx(mqc, t1_getctxno_mag(flag)); /* ESSAI */ if (type == T1_TYPE_RAW) { /* BYPASS/LAZY MODE */ mqc_bypass_enc(mqc, v); } else { mqc_encode(mqc, v); } *flagsp |= T1_REFINE; } } static void t1_dec_refpass_step( opj_t1_t *t1, flag_t *flagsp, int *datap, int poshalf, int neghalf, char type, int vsc) { int v, t, flag; opj_mqc_t *mqc = t1->mqc; /* MQC component */ opj_raw_t *raw = t1->raw; /* RAW component */ flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp); if ((flag & (T1_SIG | T1_VISIT)) == T1_SIG) { mqc_setcurctx(mqc, t1_getctxno_mag(flag)); /* ESSAI */ if (type == T1_TYPE_RAW) { v = raw_decode(raw); } else { v = mqc_decode(mqc); } t = v ? poshalf : neghalf; *datap += *datap < 0 ? -t : t; *flagsp |= T1_REFINE; } } /* VSC and BYPASS by Antonin */ static void t1_enc_refpass( opj_t1_t *t1, int bpno, int *nmsedec, char type, int cblksty) { int i, j, k, one, vsc; *nmsedec = 0; one = 1 << (bpno + T1_NMSEDEC_FRACBITS); for (k = 0; k < t1->h; k += 4) { for (i = 0; i < t1->w; ++i) { for (j = k; j < k + 4 && j < t1->h; ++j) { vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == t1->h - 1)) ? 1 : 0; t1_enc_refpass_step( t1, &t1->flags[((j+1) * t1->flags_stride) + i + 1], &t1->data[(j * t1->w) + i], bpno, one, nmsedec, type, vsc); } } } } static void t1_dec_refpass( opj_t1_t *t1, int bpno, char type, int cblksty) { int i, j, k, one, poshalf, neghalf; int vsc; one = 1 << bpno; poshalf = one >> 1; neghalf = bpno > 0 ? -poshalf : -1; for (k = 0; k < t1->h; k += 4) { for (i = 0; i < t1->w; ++i) { for (j = k; j < k + 4 && j < t1->h; ++j) { vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == t1->h - 1)) ? 1 : 0; t1_dec_refpass_step( t1, &t1->flags[((j+1) * t1->flags_stride) + i + 1], &t1->data[(j * t1->w) + i], poshalf, neghalf, type, vsc); } } } } /* VSC and BYPASS by Antonin */ static void t1_enc_clnpass_step( opj_t1_t *t1, flag_t *flagsp, int *datap, int orient, int bpno, int one, int *nmsedec, int partial, int vsc) { int v, flag; opj_mqc_t *mqc = t1->mqc; /* MQC component */ flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp); if (partial) { goto LABEL_PARTIAL; } if (!(*flagsp & (T1_SIG | T1_VISIT))) { mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient)); v = int_abs(*datap) & one ? 1 : 0; mqc_encode(mqc, v); if (v) { LABEL_PARTIAL: *nmsedec += t1_getnmsedec_sig(int_abs(*datap), bpno + T1_NMSEDEC_FRACBITS); mqc_setcurctx(mqc, t1_getctxno_sc(flag)); v = *datap < 0 ? 1 : 0; mqc_encode(mqc, v ^ t1_getspb(flag)); t1_updateflags(flagsp, v, t1->flags_stride); } } *flagsp &= ~T1_VISIT; } static void t1_dec_clnpass_step( opj_t1_t *t1, flag_t *flagsp, int *datap, int orient, int oneplushalf, int partial, int vsc) { int v, flag; opj_mqc_t *mqc = t1->mqc; /* MQC component */ flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp); if (partial) { goto LABEL_PARTIAL; } if (!(flag & (T1_SIG | T1_VISIT))) { mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient)); if (mqc_decode(mqc)) { LABEL_PARTIAL: mqc_setcurctx(mqc, t1_getctxno_sc(flag)); v = mqc_decode(mqc) ^ t1_getspb(flag); *datap = v ? -oneplushalf : oneplushalf; t1_updateflags(flagsp, v, t1->flags_stride); } } *flagsp &= ~T1_VISIT; } /* VSC and BYPASS by Antonin */ static void t1_enc_clnpass( opj_t1_t *t1, int bpno, int orient, int *nmsedec, int cblksty) { int i, j, k, one, agg, runlen, vsc; opj_mqc_t *mqc = t1->mqc; /* MQC component */ *nmsedec = 0; one = 1 << (bpno + T1_NMSEDEC_FRACBITS); for (k = 0; k < t1->h; k += 4) { for (i = 0; i < t1->w; ++i) { if (k + 3 < t1->h) { if (cblksty & J2K_CCP_CBLKSTY_VSC) { agg = !(MACRO_t1_flags(1 + k,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH) || MACRO_t1_flags(1 + k + 1,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH) || MACRO_t1_flags(1 + k + 2,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH) || (MACRO_t1_flags(1 + k + 3,1 + i) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) & (T1_SIG | T1_VISIT | T1_SIG_OTH)); } else { agg = !(MACRO_t1_flags(1 + k,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH) || MACRO_t1_flags(1 + k + 1,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH) || MACRO_t1_flags(1 + k + 2,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH) || MACRO_t1_flags(1 + k + 3,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)); } } else { agg = 0; } if (agg) { for (runlen = 0; runlen < 4; ++runlen) { if (int_abs(t1->data[((k + runlen)*t1->w) + i]) & one) break; } mqc_setcurctx(mqc, T1_CTXNO_AGG); mqc_encode(mqc, runlen != 4); if (runlen == 4) { continue; } mqc_setcurctx(mqc, T1_CTXNO_UNI); mqc_encode(mqc, runlen >> 1); mqc_encode(mqc, runlen & 1); } else { runlen = 0; } for (j = k + runlen; j < k + 4 && j < t1->h; ++j) { vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == t1->h - 1)) ? 1 : 0; t1_enc_clnpass_step( t1, &t1->flags[((j+1) * t1->flags_stride) + i + 1], &t1->data[(j * t1->w) + i], orient, bpno, one, nmsedec, agg && (j == k + runlen), vsc); } } } } static void t1_dec_clnpass( opj_t1_t *t1, int bpno, int orient, int cblksty) { int i, j, k, one, half, oneplushalf, agg, runlen, vsc; int segsym = cblksty & J2K_CCP_CBLKSTY_SEGSYM; opj_mqc_t *mqc = t1->mqc; /* MQC component */ one = 1 << bpno; half = one >> 1; oneplushalf = one | half; for (k = 0; k < t1->h; k += 4) { for (i = 0; i < t1->w; ++i) { if (k + 3 < t1->h) { if (cblksty & J2K_CCP_CBLKSTY_VSC) { agg = !(MACRO_t1_flags(1 + k,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH) || MACRO_t1_flags(1 + k + 1,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH) || MACRO_t1_flags(1 + k + 2,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH) || (MACRO_t1_flags(1 + k + 3,1 + i) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) & (T1_SIG | T1_VISIT | T1_SIG_OTH)); } else { agg = !(MACRO_t1_flags(1 + k,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH) || MACRO_t1_flags(1 + k + 1,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH) || MACRO_t1_flags(1 + k + 2,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH) || MACRO_t1_flags(1 + k + 3,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)); } } else { agg = 0; } if (agg) { mqc_setcurctx(mqc, T1_CTXNO_AGG); if (!mqc_decode(mqc)) { continue; } mqc_setcurctx(mqc, T1_CTXNO_UNI); runlen = mqc_decode(mqc); runlen = (runlen << 1) | mqc_decode(mqc); } else { runlen = 0; } for (j = k + runlen; j < k + 4 && j < t1->h; ++j) { vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == t1->h - 1)) ? 1 : 0; t1_dec_clnpass_step( t1, &t1->flags[((j+1) * t1->flags_stride) + i + 1], &t1->data[(j * t1->w) + i], orient, oneplushalf, agg && (j == k + runlen), vsc); } } } if (segsym) { int v = 0; mqc_setcurctx(mqc, T1_CTXNO_UNI); v = mqc_decode(mqc); v = (v << 1) | mqc_decode(mqc); v = (v << 1) | mqc_decode(mqc); v = (v << 1) | mqc_decode(mqc); /* if (v!=0xa) { opj_event_msg(t1->cinfo, EVT_WARNING, "Bad segmentation symbol %x\n", v); } */ } } /* VSC and BYPASS by Antonin */ /** mod fixed_quality */ static double t1_getwmsedec( int nmsedec, int compno, int level, int orient, int bpno, int qmfbid, double stepsize, int numcomps) { double w1, w2, wmsedec; if (qmfbid == 1) { w1 = (numcomps > 1) ? mct_getnorm(compno) : 1.0; w2 = dwt_getnorm(level, orient); } else { /* if (qmfbid == 0) */ w1 = (numcomps > 1) ? mct_getnorm_real(compno) : 1.0; w2 = dwt_getnorm_real(level, orient); } wmsedec = w1 * w2 * stepsize * (1 << bpno); wmsedec *= wmsedec * nmsedec / 8192.0; return wmsedec; } static bool allocate_buffers( opj_t1_t *t1, int w, int h) { int datasize=w * h; int flagssize; if(datasize > t1->datasize){ opj_aligned_free(t1->data); t1->data=opj_aligned_malloc(datasize * sizeof(int)); if(!t1->data){ return false; } t1->datasize=datasize; } memset(t1->data,0,datasize * sizeof(int)); t1->flags_stride=w+2; flagssize=t1->flags_stride * (h+2); if(flagssize > t1->flagssize){ opj_aligned_free(t1->flags); t1->flags=opj_aligned_malloc(flagssize * sizeof(flag_t)); if(!t1->flags){ return false; } t1->flagssize=flagssize; } memset(t1->flags,0,flagssize * sizeof(flag_t)); t1->w=w; t1->h=h; return true; } /** mod fixed_quality */ static void t1_encode_cblk( opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int compno, int level, int qmfbid, double stepsize, int cblksty, int numcomps, opj_tcd_tile_t * tile) { int i, j; int passno; int bpno, passtype; int max; int nmsedec = 0; double cumwmsedec = 0.0; char type = T1_TYPE_MQ; opj_mqc_t *mqc = t1->mqc; /* MQC component */ max = 0; for (j = 0; j < t1->h; ++j) { for (i = 0; i < t1->w; ++i) { max = int_max(max, int_abs(t1->data[(j * t1->w) + i])); } } cblk->numbps = max ? (int_floorlog2(max) + 1) - T1_NMSEDEC_FRACBITS : 0; bpno = cblk->numbps - 1; passtype = 2; mqc_resetstates(mqc); mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46); mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3); mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4); mqc_init_enc(mqc, cblk->data); for (passno = 0; bpno >= 0; ++passno) { opj_tcd_pass_t *pass = &cblk->passes[passno]; int correction = 3; type = ((bpno < (cblk->numbps - 4)) && (passtype < 2) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW : T1_TYPE_MQ; switch (passtype) { case 0: t1_enc_sigpass(t1, bpno, orient, &nmsedec, type, cblksty); break; case 1: t1_enc_refpass(t1, bpno, &nmsedec, type, cblksty); break; case 2: t1_enc_clnpass(t1, bpno, orient, &nmsedec, cblksty); /* code switch SEGMARK (i.e. SEGSYM) */ if (cblksty & J2K_CCP_CBLKSTY_SEGSYM) mqc_segmark_enc(mqc); break; } /* fixed_quality */ cumwmsedec += t1_getwmsedec(nmsedec, compno, level, orient, bpno, qmfbid, stepsize, numcomps); tile->distotile += t1_getwmsedec(nmsedec, compno, level, orient, bpno, qmfbid, stepsize, numcomps); /* Code switch "RESTART" (i.e. TERMALL) */ if ((cblksty & J2K_CCP_CBLKSTY_TERMALL) && !((passtype == 2) && (bpno - 1 < 0))) { if (type == T1_TYPE_RAW) { mqc_flush(mqc); correction = 1; /* correction = mqc_bypass_flush_enc(); */ } else { /* correction = mqc_restart_enc(); */ mqc_flush(mqc); correction = 1; } pass->term = 1; } else { if (((bpno < (cblk->numbps - 4) && (passtype > 0)) || ((bpno == (cblk->numbps - 4)) && (passtype == 2))) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) { if (type == T1_TYPE_RAW) { mqc_flush(mqc); correction = 1; /* correction = mqc_bypass_flush_enc(); */ } else { /* correction = mqc_restart_enc(); */ mqc_flush(mqc); correction = 1; } pass->term = 1; } else { pass->term = 0; } } if (++passtype == 3) { passtype = 0; bpno--; } if (pass->term && bpno > 0) { type = ((bpno < (cblk->numbps - 4)) && (passtype < 2) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW : T1_TYPE_MQ; if (type == T1_TYPE_RAW) mqc_bypass_init_enc(mqc); else mqc_restart_init_enc(mqc); } pass->distortiondec = cumwmsedec; pass->rate = mqc_numbytes(mqc) + correction; /* FIXME */ /* Code-switch "RESET" */ if (cblksty & J2K_CCP_CBLKSTY_RESET) mqc_reset_enc(mqc); } /* Code switch "ERTERM" (i.e. PTERM) */ if (cblksty & J2K_CCP_CBLKSTY_PTERM) mqc_erterm_enc(mqc); else /* Default coding */ if (!(cblksty & J2K_CCP_CBLKSTY_LAZY)) mqc_flush(mqc); cblk->totalpasses = passno; for (passno = 0; passnototalpasses; passno++) { opj_tcd_pass_t *pass = &cblk->passes[passno]; if (pass->rate > mqc_numbytes(mqc)) pass->rate = mqc_numbytes(mqc); /*Preventing generation of FF as last data byte of a pass*/ if((pass->rate>1) && (cblk->data[pass->rate - 1] == 0xFF)){ pass->rate--; } pass->len = pass->rate - (passno == 0 ? 0 : cblk->passes[passno - 1].rate); } } static void t1_decode_cblk( opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int roishift, int cblksty) { int bpno, passtype; int segno, passno; char type = T1_TYPE_MQ; /* BYPASS mode */ opj_raw_t *raw = t1->raw; /* RAW component */ opj_mqc_t *mqc = t1->mqc; /* MQC component */ if(!allocate_buffers( t1, cblk->x1 - cblk->x0, cblk->y1 - cblk->y0)) { return; } bpno = roishift + cblk->numbps - 1; passtype = 2; mqc_resetstates(mqc); mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46); mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3); mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4); for (segno = 0; segno < cblk->numsegs; ++segno) { opj_tcd_seg_t *seg = &cblk->segs[segno]; /* BYPASS mode */ type = ((bpno <= (cblk->numbps - 1) - 4) && (passtype < 2) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW : T1_TYPE_MQ; if (type == T1_TYPE_RAW) { raw_init_dec(raw, seg->data, seg->len); } else { mqc_init_dec(mqc, seg->data, seg->len); } for (passno = 0; passno < seg->numpasses; ++passno) { switch (passtype) { case 0: t1_dec_sigpass(t1, bpno+1, orient, type, cblksty); break; case 1: t1_dec_refpass(t1, bpno+1, type, cblksty); break; case 2: t1_dec_clnpass(t1, bpno+1, orient, cblksty); break; } if ((cblksty & J2K_CCP_CBLKSTY_RESET) && type == T1_TYPE_MQ) { mqc_resetstates(mqc); mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46); mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3); mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4); } if (++passtype == 3) { passtype = 0; bpno--; } } } } /* ----------------------------------------------------------------------- */ opj_t1_t* t1_create(opj_common_ptr cinfo) { opj_t1_t *t1 = (opj_t1_t*) malloc(sizeof(opj_t1_t)); if(!t1) return NULL; t1->cinfo = cinfo; /* create MQC and RAW handles */ t1->mqc = mqc_create(); t1->raw = raw_create(); t1->datasize=0; t1->data=NULL; t1->flagssize=0; t1->flags=NULL; return t1; } void t1_destroy(opj_t1_t *t1) { if(t1) { /* destroy MQC and RAW handles */ mqc_destroy(t1->mqc); raw_destroy(t1->raw); opj_aligned_free(t1->data); opj_aligned_free(t1->flags); free(t1); } } void t1_encode_cblks( opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp) { int compno, resno, bandno, precno, cblkno; tile->distotile = 0; /* fixed_quality */ for (compno = 0; compno < tile->numcomps; ++compno) { opj_tcd_tilecomp_t *tilec = &tile->comps[compno]; for (resno = 0; resno < tilec->numresolutions; ++resno) { opj_tcd_resolution_t *res = &tilec->resolutions[resno]; for (bandno = 0; bandno < res->numbands; ++bandno) { opj_tcd_band_t *band = &res->bands[bandno]; for (precno = 0; precno < res->pw * res->ph; ++precno) { opj_tcd_precinct_t *prc = &band->precincts[precno]; for (cblkno = 0; cblkno < prc->cw * prc->ch; ++cblkno) { int x, y, w, i, j; opj_tcd_cblk_t *cblk = &prc->cblks[cblkno]; x = cblk->x0 - band->x0; y = cblk->y0 - band->y0; if (band->bandno & 1) { opj_tcd_resolution_t *pres = &tilec->resolutions[resno - 1]; x += pres->x1 - pres->x0; } if (band->bandno & 2) { opj_tcd_resolution_t *pres = &tilec->resolutions[resno - 1]; y += pres->y1 - pres->y0; } if(!allocate_buffers( t1, cblk->x1 - cblk->x0, cblk->y1 - cblk->y0)) { return; } w = tilec->x1 - tilec->x0; if (tcp->tccps[compno].qmfbid == 1) { for (j = 0; j < t1->h; ++j) { for (i = 0; i < t1->w; ++i) { t1->data[(j * t1->w) + i] = tilec->data[(x + i) + (y + j) * w] << T1_NMSEDEC_FRACBITS; } } } else { /* if (tcp->tccps[compno].qmfbid == 0) */ for (j = 0; j < t1->h; ++j) { for (i = 0; i < t1->w; ++i) { t1->data[(j * t1->w) + i] = fix_mul( tilec->data[x + i + (y + j) * w], 8192 * 8192 / ((int) floor(band->stepsize * 8192))) >> (11 - T1_NMSEDEC_FRACBITS); } } } t1_encode_cblk( t1, cblk, band->bandno, compno, tilec->numresolutions - 1 - resno, tcp->tccps[compno].qmfbid, band->stepsize, tcp->tccps[compno].cblksty, tile->numcomps, tile); } /* cblkno */ } /* precno */ } /* bandno */ } /* resno */ } /* compno */ } void t1_decode_cblks( opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp) { int compno, resno, bandno, precno, cblkno; for (compno = 0; compno < tile->numcomps; ++compno) { opj_tcd_tilecomp_t *tilec = &tile->comps[compno]; for (resno = 0; resno < tilec->numresolutions; ++resno) { opj_tcd_resolution_t *res = &tilec->resolutions[resno]; for (bandno = 0; bandno < res->numbands; ++bandno) { opj_tcd_band_t *band = &res->bands[bandno]; for (precno = 0; precno < res->pw * res->ph; ++precno) { opj_tcd_precinct_t *prc = &band->precincts[precno]; for (cblkno = 0; cblkno < prc->cw * prc->ch; ++cblkno) { int x, y, w, i, j, cblk_w, cblk_h; opj_tcd_cblk_t *cblk = &prc->cblks[cblkno]; t1_decode_cblk( t1, cblk, band->bandno, tcp->tccps[compno].roishift, tcp->tccps[compno].cblksty); x = cblk->x0 - band->x0; y = cblk->y0 - band->y0; if (band->bandno & 1) { opj_tcd_resolution_t *pres = &tilec->resolutions[resno - 1]; x += pres->x1 - pres->x0; } if (band->bandno & 2) { opj_tcd_resolution_t *pres = &tilec->resolutions[resno - 1]; y += pres->y1 - pres->y0; } cblk_w = cblk->x1 - cblk->x0; cblk_h = cblk->y1 - cblk->y0; if (tcp->tccps[compno].roishift) { int thresh = 1 << tcp->tccps[compno].roishift; for (j = 0; j < cblk_h; ++j) { for (i = 0; i < cblk_w; ++i) { int val = t1->data[(j * t1->w) + i]; int mag = int_abs(val); if (mag >= thresh) { mag >>= tcp->tccps[compno].roishift; t1->data[(j * t1->w) + i] = val < 0 ? -mag : mag; } } } } w = tilec->x1 - tilec->x0; if (tcp->tccps[compno].qmfbid == 1) { for (j = 0; j < cblk_h; ++j) { for (i = 0; i < cblk_w; ++i) { tilec->data[x + i + (y + j) * w] = t1->data[(j * t1->w) + i]/2; } } } else { /* if (tcp->tccps[compno].qmfbid == 0) */ for (j = 0; j < cblk_h; ++j) { for (i = 0; i < cblk_w; ++i) { if (t1->data[(j * t1->w) + i] >> 1 == 0) { tilec->data[x + i + (y + j) * w] = 0; } else { double tmp = (double)(t1->data[(j * t1->w) + i] * band->stepsize * 4096.0); int tmp2 = ((int) (floor(fabs(tmp)))) + ((int) floor(fabs(tmp*2))%2); tilec->data[x + i + (y + j) * w] = ((tmp<0)?-tmp2:tmp2); } } } } } /* cblkno */ } /* precno */ } /* bandno */ } /* resno */ } /* compno */ }