* 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
*/
#include "opj_includes.h"
+#include "t1_luts.h"
/** @defgroup T1 T1 - Implementation of the tier-1 coding */
/*@{*/
/** @name Local static functions */
/*@{*/
-static int t1_getctxno_zc(opj_t1_t *t1, int f, int orient);
-static int t1_getctxno_sc(opj_t1_t *t1, int f);
-static int t1_getctxno_mag(opj_t1_t *t1, int f);
-static int t1_getspb(opj_t1_t *t1, int f);
-static int t1_getnmsedec_sig(opj_t1_t *t1, int x, int bitpos);
-static int t1_getnmsedec_ref(opj_t1_t *t1, int x, int bitpos);
-static void t1_updateflags(int *fp, int s);
+static char t1_getctxno_zc(int f, int orient);
+static char t1_getctxno_sc(int f);
+static char 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);
/**
Encode significant pass
*/
-static void t1_enc_sigpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int bpno, int one, int *nmsedec, char type, int vsc);
+static void t1_enc_sigpass_step(opj_t1_t *t1, flag_t *flagsp, int *dp, 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, int *fp, int *dp, int orient, int oneplushalf, char type, int vsc);
+static void t1_dec_sigpass_step(opj_t1_t *t1, flag_t *flagsp, int *dp, int orient, int oneplushalf, char type, int vsc);
/**
Encode significant pass
*/
/**
Encode refinement pass
*/
-static void t1_enc_refpass_step(opj_t1_t *t1, int *fp, int *dp, int bpno, int one, int *nmsedec, char type, int vsc);
+static void t1_enc_refpass_step(opj_t1_t *t1, flag_t *flagsp, int *dp, int bpno, int one, int *nmsedec, char type, int vsc);
/**
Decode refinement pass
*/
-static void t1_dec_refpass_step(opj_t1_t *t1, int *fp, int *dp, int poshalf, int neghalf, char type, int vsc);
+static void t1_dec_refpass_step(opj_t1_t *t1, flag_t *flagsp, int *dp, int poshalf, int neghalf, char type, int vsc);
/**
Encode refinement pass
*/
/**
Encode clean-up pass
*/
-static void t1_enc_clnpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int bpno, int one, int *nmsedec, int partial, int vsc);
+static void t1_enc_clnpass_step(opj_t1_t *t1, flag_t *flagsp, int *dp, 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, int *fp, int *dp, int orient, int oneplushalf, int partial, int vsc);
+static void t1_dec_clnpass_step(opj_t1_t *t1, flag_t *flagsp, int *dp, int orient, int oneplushalf, int partial, int vsc);
/**
Encode clean-up pass
*/
@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 int t1_init_ctxno_zc(int f, int orient);
-static int t1_init_ctxno_sc(int f);
-static int t1_init_ctxno_mag(int f);
-static int t1_init_spb(int f);
-/**
-Initialize the look-up tables of the Tier-1 coder/decoder
-@param t1 T1 handle
-*/
-static void t1_init_luts(opj_t1_t *t1);
/*@}*/
/* ----------------------------------------------------------------------- */
-static int t1_getctxno_zc(opj_t1_t *t1, int f, int orient) {
- return t1->lut_ctxno_zc[(orient << 8) | (f & T1_SIG_OTH)];
+static char t1_getctxno_zc(int f, int orient) {
+ return lut_ctxno_zc[(orient << 8) | (f & T1_SIG_OTH)];
}
-static int t1_getctxno_sc(opj_t1_t *t1, int f) {
- return t1->lut_ctxno_sc[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
+static char t1_getctxno_sc(int f) {
+ return lut_ctxno_sc[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
}
-static int t1_getctxno_mag(opj_t1_t *t1, int f) {
- return t1->lut_ctxno_mag[(f & T1_SIG_OTH) | (((f & T1_REFINE) != 0) << 11)];
+static char t1_getctxno_mag(int f) {
+ return lut_ctxno_mag[(f & T1_SIG_OTH) | (((f & T1_REFINE) != 0) << 11)];
}
-static int t1_getspb(opj_t1_t *t1, int f) {
- return t1->lut_spb[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
+static char t1_getspb(int f) {
+ return lut_spb[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
}
-static int t1_getnmsedec_sig(opj_t1_t *t1, int x, int bitpos) {
+static short t1_getnmsedec_sig(int x, int bitpos) {
if (bitpos > T1_NMSEDEC_FRACBITS) {
- return t1->lut_nmsedec_sig[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) & ((1 << T1_NMSEDEC_BITS) - 1)];
+ return lut_nmsedec_sig[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) & ((1 << T1_NMSEDEC_BITS) - 1)];
}
- return t1->lut_nmsedec_sig0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
+ return lut_nmsedec_sig0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
}
-static int t1_getnmsedec_ref(opj_t1_t *t1, int x, int bitpos) {
+static short t1_getnmsedec_ref(int x, int bitpos) {
if (bitpos > T1_NMSEDEC_FRACBITS) {
- return t1->lut_nmsedec_ref[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) & ((1 << T1_NMSEDEC_BITS) - 1)];
+ return lut_nmsedec_ref[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) & ((1 << T1_NMSEDEC_BITS) - 1)];
}
- return t1->lut_nmsedec_ref0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
+ return lut_nmsedec_ref0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
}
-static void t1_updateflags(int *fp, int s) {
- int *np = fp - (T1_MAXCBLKW + 2);
- int *sp = fp + (T1_MAXCBLKW + 2);
+static void t1_updateflags(flag_t *flagsp, int s) {
+ flag_t *np = flagsp - (T1_MAXCBLKW + 2);
+ flag_t *sp = flagsp + (T1_MAXCBLKW + 2);
np[-1] |= T1_SIG_SE;
np[1] |= T1_SIG_SW;
sp[-1] |= T1_SIG_NE;
sp[1] |= T1_SIG_NW;
*np |= T1_SIG_S;
*sp |= T1_SIG_N;
- fp[-1] |= T1_SIG_E;
- fp[1] |= T1_SIG_W;
+ flagsp[-1] |= T1_SIG_E;
+ flagsp[1] |= T1_SIG_W;
if (s) {
*np |= T1_SGN_S;
*sp |= T1_SGN_N;
- fp[-1] |= T1_SGN_E;
- fp[1] |= T1_SGN_W;
+ flagsp[-1] |= T1_SGN_E;
+ flagsp[1] |= T1_SGN_W;
}
}
-static void t1_enc_sigpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int bpno, int one, int *nmsedec, char type, int vsc) {
+static void t1_enc_sigpass_step(opj_t1_t *t1, flag_t *flagsp, int *dp, 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 ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
+ 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(*dp) & one ? 1 : 0;
if (type == T1_TYPE_RAW) { /* BYPASS/LAZY MODE */
- mqc_setcurctx(mqc, t1_getctxno_zc(t1, flag, orient)); /* ESSAI */
+ mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient)); /* ESSAI */
mqc_bypass_enc(mqc, v);
} else {
- mqc_setcurctx(mqc, t1_getctxno_zc(t1, flag, orient));
+ mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient));
mqc_encode(mqc, v);
}
if (v) {
v = *dp < 0 ? 1 : 0;
- *nmsedec += t1_getnmsedec_sig(t1, int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
+ *nmsedec += t1_getnmsedec_sig(int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
if (type == T1_TYPE_RAW) { /* BYPASS/LAZY MODE */
- mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag)); /* ESSAI */
+ mqc_setcurctx(mqc, t1_getctxno_sc(flag)); /* ESSAI */
mqc_bypass_enc(mqc, v);
} else {
- mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));
- mqc_encode(mqc, v ^ t1_getspb(t1, flag));
+ mqc_setcurctx(mqc, t1_getctxno_sc(flag));
+ mqc_encode(mqc, v ^ t1_getspb(flag));
}
- t1_updateflags(fp, v);
- *fp |= T1_SIG;
+ t1_updateflags(flagsp, v);
+ *flagsp |= T1_SIG;
}
- *fp |= T1_VISIT;
+ *flagsp |= T1_VISIT;
}
}
-static void t1_dec_sigpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int oneplushalf, char type, int vsc) {
+static void t1_dec_sigpass_step(opj_t1_t *t1, flag_t *flagsp, int *dp, 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 ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
+ 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 */
*dp = v ? -oneplushalf : oneplushalf;
- t1_updateflags(fp, v);
- *fp |= T1_SIG;
+ t1_updateflags(flagsp, v);
+ *flagsp |= T1_SIG;
}
} else {
- mqc_setcurctx(mqc, t1_getctxno_zc(t1, flag, orient));
+ mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient));
if (mqc_decode(mqc)) {
- mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));
- v = mqc_decode(mqc) ^ t1_getspb(t1, flag);
+ mqc_setcurctx(mqc, t1_getctxno_sc(flag));
+ v = mqc_decode(mqc) ^ t1_getspb(flag);
*dp = v ? -oneplushalf : oneplushalf;
- t1_updateflags(fp, v);
- *fp |= T1_SIG;
+ t1_updateflags(flagsp, v);
+ *flagsp |= T1_SIG;
}
}
- *fp |= T1_VISIT;
+ *flagsp |= T1_VISIT;
}
} /* VSC and BYPASS by Antonin */
}
} /* VSC and BYPASS by Antonin */
-static void t1_enc_refpass_step(opj_t1_t *t1, int *fp, int *dp, int bpno, int one, int *nmsedec, char type, int vsc) {
+static void t1_enc_refpass_step(opj_t1_t *t1, flag_t *flagsp, int *dp, int bpno, int one, int *nmsedec, char type, int vsc) {
int v, flag;
opj_mqc_t *mqc = t1->mqc; /* MQC component */
- flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
+ 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(t1, int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
+ *nmsedec += t1_getnmsedec_ref(int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
v = int_abs(*dp) & one ? 1 : 0;
if (type == T1_TYPE_RAW) { /* BYPASS/LAZY MODE */
- mqc_setcurctx(mqc, t1_getctxno_mag(t1, flag)); /* ESSAI */
+ mqc_setcurctx(mqc, t1_getctxno_mag(flag)); /* ESSAI */
mqc_bypass_enc(mqc, v);
} else {
- mqc_setcurctx(mqc, t1_getctxno_mag(t1, flag));
+ mqc_setcurctx(mqc, t1_getctxno_mag(flag));
mqc_encode(mqc, v);
}
- *fp |= T1_REFINE;
+ *flagsp |= T1_REFINE;
}
}
-static void t1_dec_refpass_step(opj_t1_t *t1, int *fp, int *dp, int poshalf, int neghalf, char type, int vsc) {
+static void t1_dec_refpass_step(opj_t1_t *t1, flag_t *flagsp, int *dp, 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 ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
+ flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
if ((flag & (T1_SIG | T1_VISIT)) == T1_SIG) {
if (type == T1_TYPE_RAW) {
- mqc_setcurctx(mqc, t1_getctxno_mag(t1, flag)); /* ESSAI */
+ mqc_setcurctx(mqc, t1_getctxno_mag(flag)); /* ESSAI */
v = raw_decode(raw);
} else {
- mqc_setcurctx(mqc, t1_getctxno_mag(t1, flag));
+ mqc_setcurctx(mqc, t1_getctxno_mag(flag));
v = mqc_decode(mqc);
}
t = v ? poshalf : neghalf;
*dp += *dp < 0 ? -t : t;
- *fp |= T1_REFINE;
+ *flagsp |= T1_REFINE;
}
} /* VSC and BYPASS by Antonin */
}
} /* VSC and BYPASS by Antonin */
-static void t1_enc_clnpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int bpno, int one, int *nmsedec, int partial, int vsc) {
+static void t1_enc_clnpass_step(opj_t1_t *t1, flag_t *flagsp, int *dp, 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 ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
+ flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
if (partial) {
goto LABEL_PARTIAL;
}
- if (!(*fp & (T1_SIG | T1_VISIT))) {
- mqc_setcurctx(mqc, t1_getctxno_zc(t1, flag, orient));
+ if (!(*flagsp & (T1_SIG | T1_VISIT))) {
+ mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient));
v = int_abs(*dp) & one ? 1 : 0;
mqc_encode(mqc, v);
if (v) {
LABEL_PARTIAL:
- *nmsedec += t1_getnmsedec_sig(t1, int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
- mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));
+ *nmsedec += t1_getnmsedec_sig(int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
+ mqc_setcurctx(mqc, t1_getctxno_sc(flag));
v = *dp < 0 ? 1 : 0;
- mqc_encode(mqc, v ^ t1_getspb(t1, flag));
- t1_updateflags(fp, v);
- *fp |= T1_SIG;
+ mqc_encode(mqc, v ^ t1_getspb(flag));
+ t1_updateflags(flagsp, v);
+ *flagsp |= T1_SIG;
}
}
- *fp &= ~T1_VISIT;
+ *flagsp &= ~T1_VISIT;
}
-static void t1_dec_clnpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int oneplushalf, int partial, int vsc) {
+static void t1_dec_clnpass_step(opj_t1_t *t1, flag_t *flagsp, int *dp, int orient, int oneplushalf, int partial, int vsc) {
int v, flag;
opj_mqc_t *mqc = t1->mqc; /* MQC component */
- flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
+ 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(t1, flag, orient));
+ mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient));
if (mqc_decode(mqc)) {
LABEL_PARTIAL:
- mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));
- v = mqc_decode(mqc) ^ t1_getspb(t1, flag);
+ mqc_setcurctx(mqc, t1_getctxno_sc(flag));
+ v = mqc_decode(mqc) ^ t1_getspb(flag);
*dp = v ? -oneplushalf : oneplushalf;
- t1_updateflags(fp, v);
- *fp |= T1_SIG;
+ t1_updateflags(flagsp, v);
+ *flagsp |= T1_SIG;
}
}
- *fp &= ~T1_VISIT;
+ *flagsp &= ~T1_VISIT;
} /* VSC and BYPASS by Antonin */
static void t1_enc_clnpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int *nmsedec, int cblksty) {
cblk->numbps = max ? (int_floorlog2(max) + 1) - T1_NMSEDEC_FRACBITS : 0;
- /* Changed by Dmitry Kolyadin */
- for (i = 0; i <= w; i++) {
- for (j = 0; j <= h; j++) {
- t1->flags[j][i] = 0;
- }
- }
+ for (i = 0; i <= h; ++i) {
+ memset(&t1->flags[i], 0, (w+1) * sizeof(flag_t));
+ }
bpno = cblk->numbps - 1;
passtype = 2;
pass->distortiondec = cumwmsedec;
pass->rate = mqc_numbytes(mqc) + correction; /* FIXME */
- pass->len = pass->rate - (passno == 0 ? 0 : cblk->passes[passno - 1].rate);
/* Code-switch "RESET" */
if (cblksty & J2K_CCP_CBLKSTY_RESET)
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_t * cblk, int orient, int roishift, int cblksty) {
- int i, j, w, h;
+ int i, w, h;
int bpno, passtype;
int segno, passno;
char type = T1_TYPE_MQ; /* BYPASS mode */
w = cblk->x1 - cblk->x0;
h = cblk->y1 - cblk->y0;
- /* Changed by Dmitry Kolyadin */
- for (j = 0; j <= h; j++) {
- for (i = 0; i <= w; i++) {
- t1->flags[j][i] = 0;
- }
- }
+ for (i = 0; i <= h; ++i) {
+ memset(&t1->flags[i], 0, (w + 1) * sizeof(flag_t));
+ }
- /* Changed by Dmitry Kolyadin */
- for (i = 0; i < w; i++) {
- for (j = 0; j < h; j++){
- t1->data[j][i] = 0;
- }
- }
+ for (i = 0; i < h; ++i) {
+ memset(&t1->data[i], 0, w * sizeof(int));
+ }
bpno = roishift + cblk->numbps - 1;
passtype = 2;
}
}
-static int t1_init_ctxno_zc(int f, int orient) {
- int h, v, d, n, t, hv;
- n = 0;
- h = ((f & T1_SIG_W) != 0) + ((f & T1_SIG_E) != 0);
- v = ((f & T1_SIG_N) != 0) + ((f & T1_SIG_S) != 0);
- d = ((f & T1_SIG_NW) != 0) + ((f & T1_SIG_NE) != 0) + ((f & T1_SIG_SE) != 0) + ((f & T1_SIG_SW) != 0);
-
- switch (orient) {
- case 2:
- t = h;
- h = v;
- v = t;
- case 0:
- case 1:
- if (!h) {
- if (!v) {
- if (!d)
- n = 0;
- else if (d == 1)
- n = 1;
- else
- n = 2;
- } else if (v == 1) {
- n = 3;
- } else {
- n = 4;
- }
- } else if (h == 1) {
- if (!v) {
- if (!d)
- n = 5;
- else
- n = 6;
- } else {
- n = 7;
- }
- } else
- n = 8;
- break;
- case 3:
- hv = h + v;
- if (!d) {
- if (!hv) {
- n = 0;
- } else if (hv == 1) {
- n = 1;
- } else {
- n = 2;
- }
- } else if (d == 1) {
- if (!hv) {
- n = 3;
- } else if (hv == 1) {
- n = 4;
- } else {
- n = 5;
- }
- } else if (d == 2) {
- if (!hv) {
- n = 6;
- } else {
- n = 7;
- }
- } else {
- n = 8;
- }
- break;
- }
-
- return (T1_CTXNO_ZC + n);
-}
-
-static int t1_init_ctxno_sc(int f) {
- int hc, vc, n;
- n = 0;
-
- hc = int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
- T1_SIG_E) + ((f & (T1_SIG_W | T1_SGN_W)) == T1_SIG_W),
- 1) - int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
- (T1_SIG_E | T1_SGN_E)) +
- ((f & (T1_SIG_W | T1_SGN_W)) ==
- (T1_SIG_W | T1_SGN_W)), 1);
-
- vc = int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
- T1_SIG_N) + ((f & (T1_SIG_S | T1_SGN_S)) == T1_SIG_S),
- 1) - int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
- (T1_SIG_N | T1_SGN_N)) +
- ((f & (T1_SIG_S | T1_SGN_S)) ==
- (T1_SIG_S | T1_SGN_S)), 1);
-
- if (hc < 0) {
- hc = -hc;
- vc = -vc;
- }
- if (!hc) {
- if (vc == -1)
- n = 1;
- else if (!vc)
- n = 0;
- else
- n = 1;
- } else if (hc == 1) {
- if (vc == -1)
- n = 2;
- else if (!vc)
- n = 3;
- else
- n = 4;
- }
-
- return (T1_CTXNO_SC + n);
-}
-
-static int t1_init_ctxno_mag(int f) {
- int n;
- if (!(f & T1_REFINE))
- n = (f & (T1_SIG_OTH)) ? 1 : 0;
- else
- n = 2;
-
- return (T1_CTXNO_MAG + n);
-}
-
-static int t1_init_spb(int f) {
- int hc, vc, n;
-
- hc = int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
- T1_SIG_E) + ((f & (T1_SIG_W | T1_SGN_W)) == T1_SIG_W),
- 1) - int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
- (T1_SIG_E | T1_SGN_E)) +
- ((f & (T1_SIG_W | T1_SGN_W)) ==
- (T1_SIG_W | T1_SGN_W)), 1);
-
- vc = int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
- T1_SIG_N) + ((f & (T1_SIG_S | T1_SGN_S)) == T1_SIG_S),
- 1) - int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
- (T1_SIG_N | T1_SGN_N)) +
- ((f & (T1_SIG_S | T1_SGN_S)) ==
- (T1_SIG_S | T1_SGN_S)), 1);
-
- if (!hc && !vc)
- n = 0;
- else
- n = (!(hc > 0 || (!hc && vc > 0)));
-
- return n;
-}
-
-static void t1_init_luts(opj_t1_t *t1) {
- int i, j;
- double u, v, t;
- for (j = 0; j < 4; j++) {
- for (i = 0; i < 256; ++i) {
- t1->lut_ctxno_zc[(j << 8) | i] = t1_init_ctxno_zc(i, j);
- }
- }
- for (i = 0; i < 256; i++) {
- t1->lut_ctxno_sc[i] = t1_init_ctxno_sc(i << 4);
- }
- for (j = 0; j < 2; j++) {
- for (i = 0; i < 2048; ++i) {
- t1->lut_ctxno_mag[(j << 11) + i] = t1_init_ctxno_mag((j ? T1_REFINE : 0) | i);
- }
- }
- for (i = 0; i < 256; ++i) {
- t1->lut_spb[i] = t1_init_spb(i << 4);
- }
- /* FIXME FIXME FIXME */
- /* fprintf(stdout,"nmsedec luts:\n"); */
- for (i = 0; i < (1 << T1_NMSEDEC_BITS); i++) {
- t = i / pow(2, T1_NMSEDEC_FRACBITS);
- u = t;
- v = t - 1.5;
- t1->lut_nmsedec_sig[i] =
- int_max(0,
- (int) (floor((u * u - v * v) * pow(2, T1_NMSEDEC_FRACBITS) + 0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
- t1->lut_nmsedec_sig0[i] =
- int_max(0,
- (int) (floor((u * u) * pow(2, T1_NMSEDEC_FRACBITS) + 0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
- u = t - 1.0;
- if (i & (1 << (T1_NMSEDEC_BITS - 1))) {
- v = t - 1.5;
- } else {
- v = t - 0.5;
- }
- t1->lut_nmsedec_ref[i] =
- int_max(0,
- (int) (floor((u * u - v * v) * pow(2, T1_NMSEDEC_FRACBITS) + 0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
- t1->lut_nmsedec_ref0[i] =
- int_max(0,
- (int) (floor((u * u) * pow(2, T1_NMSEDEC_FRACBITS) + 0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
- }
-}
-
/* ----------------------------------------------------------------------- */
opj_t1_t* t1_create(opj_common_ptr cinfo) {
/* create MQC and RAW handles */
t1->mqc = mqc_create();
t1->raw = raw_create();
- /* initialize the look-up tables of the Tier-1 coder/decoder */
- t1_init_luts(t1);
}
return t1;
}
} /* compno */
}
+
projects / openjpeg.git / blobdiff