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Diffstat (limited to 'extern/libopenjpeg/t1.c')
| -rw-r--r-- | extern/libopenjpeg/t1.c | 1208 |
1 files changed, 1208 insertions, 0 deletions
diff --git a/extern/libopenjpeg/t1.c b/extern/libopenjpeg/t1.c new file mode 100644 index 00000000000..ad1c6a83ab6 --- /dev/null +++ b/extern/libopenjpeg/t1.c @@ -0,0 +1,1208 @@ +/* + * 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 <seg@haxxed.com> + * 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_enc_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_dec_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 = (int*) 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 = (flag_t*) 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_enc_t* cblk, + int orient, + int compno, + int level, + int qmfbid, + double stepsize, + int cblksty, + int numcomps, + opj_tcd_tile_t * tile) +{ + double cumwmsedec = 0.0; + + opj_mqc_t *mqc = t1->mqc; /* MQC component */ + + int passno, bpno, passtype; + int nmsedec = 0; + int i, max; + char type = T1_TYPE_MQ; + double tempwmsedec; + + max = 0; + for (i = 0; i < t1->w * t1->h; ++i) { + int tmp = abs(t1->data[i]); + max = int_max(max, tmp); + } + + 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 */ + tempwmsedec = t1_getwmsedec(nmsedec, compno, level, orient, bpno, qmfbid, stepsize, numcomps); + cumwmsedec += tempwmsedec; + tile->distotile += tempwmsedec; + + /* 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; passno<cblk->totalpasses; 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_dec_t* cblk, + int orient, + int roishift, + int cblksty) +{ + opj_raw_t *raw = t1->raw; /* RAW component */ + opj_mqc_t *mqc = t1->mqc; /* MQC component */ + + int bpno, passtype; + int segno, passno; + char type = T1_TYPE_MQ; /* BYPASS mode */ + + 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; + /* FIXME: slviewer gets here with a null pointer. Why? Partially downloaded and/or corrupt textures? */ + if(seg->data == NULL){ + continue; + } + if (type == T1_TYPE_RAW) { + raw_init_dec(raw, (*seg->data) + seg->dataindex, seg->len); + } else { + mqc_init_dec(mqc, (*seg->data) + seg->dataindex, 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*) opj_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->data=NULL; + t1->flags=NULL; + t1->datasize=0; + t1->flagssize=0; + + 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); + opj_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]; + opj_tccp_t* tccp = &tcp->tccps[compno]; + int tile_w = tilec->x1 - tilec->x0; + + 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* restrict 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) { + opj_tcd_cblk_enc_t* cblk = &prc->cblks.enc[cblkno]; + int* restrict datap; + int* restrict tiledp; + int cblk_w; + int cblk_h; + int i, j; + + int x = cblk->x0 - band->x0; + int 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; + } + + datap=t1->data; + cblk_w = t1->w; + cblk_h = t1->h; + + tiledp=&tilec->data[(y * tile_w) + x]; + if (tccp->qmfbid == 1) { + for (j = 0; j < cblk_h; ++j) { + for (i = 0; i < cblk_w; ++i) { + int tmp = tiledp[(j * tile_w) + i]; + datap[(j * cblk_w) + i] = tmp << T1_NMSEDEC_FRACBITS; + } + } + } else { /* if (tccp->qmfbid == 0) */ + for (j = 0; j < cblk_h; ++j) { + for (i = 0; i < cblk_w; ++i) { + int tmp = tiledp[(j * tile_w) + i]; + datap[(j * cblk_w) + i] = + fix_mul( + tmp, + 8192 * 8192 / ((int) floor(band->stepsize * 8192))) >> (11 - T1_NMSEDEC_FRACBITS); + } + } + } + + t1_encode_cblk( + t1, + cblk, + band->bandno, + compno, + tilec->numresolutions - 1 - resno, + tccp->qmfbid, + band->stepsize, + tccp->cblksty, + tile->numcomps, + tile); + + } /* cblkno */ + } /* precno */ + } /* bandno */ + } /* resno */ + } /* compno */ +} + +void t1_decode_cblks( + opj_t1_t* t1, + opj_tcd_tilecomp_t* tilec, + opj_tccp_t* tccp) +{ + int resno, bandno, precno, cblkno; + + int tile_w = tilec->x1 - tilec->x0; + + 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* restrict band = &res->bands[bandno]; + + for (precno = 0; precno < res->pw * res->ph; ++precno) { + opj_tcd_precinct_t* precinct = &band->precincts[precno]; + + for (cblkno = 0; cblkno < precinct->cw * precinct->ch; ++cblkno) { + opj_tcd_cblk_dec_t* cblk = &precinct->cblks.dec[cblkno]; + int* restrict datap; + void* restrict tiledp; + int cblk_w, cblk_h; + int x, y; + int i, j; + + t1_decode_cblk( + t1, + cblk, + band->bandno, + tccp->roishift, + tccp->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; + } + + datap=t1->data; + cblk_w = t1->w; + cblk_h = t1->h; + + if (tccp->roishift) { + int thresh = 1 << tccp->roishift; + for (j = 0; j < cblk_h; ++j) { + for (i = 0; i < cblk_w; ++i) { + int val = datap[(j * cblk_w) + i]; + int mag = abs(val); + if (mag >= thresh) { + mag >>= tccp->roishift; + datap[(j * cblk_w) + i] = val < 0 ? -mag : mag; + } + } + } + } + + tiledp=(void*)&tilec->data[(y * tile_w) + x]; + if (tccp->qmfbid == 1) { + for (j = 0; j < cblk_h; ++j) { + for (i = 0; i < cblk_w; ++i) { + int tmp = datap[(j * cblk_w) + i]; + ((int*)tiledp)[(j * tile_w) + i] = tmp / 2; + } + } + } else { /* if (tccp->qmfbid == 0) */ + for (j = 0; j < cblk_h; ++j) { + for (i = 0; i < cblk_w; ++i) { + float tmp = datap[(j * cblk_w) + i] * band->stepsize; + ((float*)tiledp)[(j * tile_w) + i] = tmp; + } + } + } + opj_free(cblk->data); + opj_free(cblk->segs); + } /* cblkno */ + opj_free(precinct->cblks.dec); + } /* precno */ + } /* bandno */ + } /* resno */ +} + |