276 lines
7.1 KiB
C
276 lines
7.1 KiB
C
/*
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* Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
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* Copyright (c) 2002-2007, Professor Benoit Macq
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* Copyright (c) 2001-2003, David Janssens
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* Copyright (c) 2002-2003, Yannick Verschueren
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* Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
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* Copyright (c) 2005, Herve Drolon, FreeImage Team
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* Copyright (c) 2007, Callum Lerwick <seg@haxxed.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "opj_includes.h"
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#include <math.h>
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static int t1_init_ctxno_zc(int f, int orient) {
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int h, v, d, n, t, hv;
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n = 0;
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h = ((f & T1_SIG_W) != 0) + ((f & T1_SIG_E) != 0);
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v = ((f & T1_SIG_N) != 0) + ((f & T1_SIG_S) != 0);
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d = ((f & T1_SIG_NW) != 0) + ((f & T1_SIG_NE) != 0) + ((f & T1_SIG_SE) != 0) + ((f & T1_SIG_SW) != 0);
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switch (orient) {
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case 2:
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t = h;
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h = v;
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v = t;
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case 0:
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case 1:
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if (!h) {
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if (!v) {
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if (!d)
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n = 0;
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else if (d == 1)
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n = 1;
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else
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n = 2;
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} else if (v == 1) {
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n = 3;
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} else {
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n = 4;
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}
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} else if (h == 1) {
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if (!v) {
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if (!d)
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n = 5;
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else
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n = 6;
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} else {
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n = 7;
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}
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} else
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n = 8;
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break;
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case 3:
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hv = h + v;
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if (!d) {
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if (!hv) {
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n = 0;
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} else if (hv == 1) {
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n = 1;
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} else {
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n = 2;
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}
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} else if (d == 1) {
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if (!hv) {
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n = 3;
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} else if (hv == 1) {
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n = 4;
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} else {
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n = 5;
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}
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} else if (d == 2) {
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if (!hv) {
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n = 6;
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} else {
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n = 7;
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}
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} else {
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n = 8;
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}
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break;
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}
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return (T1_CTXNO_ZC + n);
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}
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static int t1_init_ctxno_sc(int f) {
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int hc, vc, n;
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n = 0;
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hc = int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
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T1_SIG_E) + ((f & (T1_SIG_W | T1_SGN_W)) == T1_SIG_W),
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1) - int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
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(T1_SIG_E | T1_SGN_E)) +
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((f & (T1_SIG_W | T1_SGN_W)) ==
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(T1_SIG_W | T1_SGN_W)), 1);
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vc = int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
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T1_SIG_N) + ((f & (T1_SIG_S | T1_SGN_S)) == T1_SIG_S),
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1) - int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
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(T1_SIG_N | T1_SGN_N)) +
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((f & (T1_SIG_S | T1_SGN_S)) ==
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(T1_SIG_S | T1_SGN_S)), 1);
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if (hc < 0) {
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hc = -hc;
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vc = -vc;
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}
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if (!hc) {
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if (vc == -1)
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n = 1;
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else if (!vc)
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n = 0;
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else
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n = 1;
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} else if (hc == 1) {
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if (vc == -1)
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n = 2;
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else if (!vc)
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n = 3;
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else
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n = 4;
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}
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return (T1_CTXNO_SC + n);
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}
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static int t1_init_spb(int f) {
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int hc, vc, n;
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hc = int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
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T1_SIG_E) + ((f & (T1_SIG_W | T1_SGN_W)) == T1_SIG_W),
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1) - int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
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(T1_SIG_E | T1_SGN_E)) +
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((f & (T1_SIG_W | T1_SGN_W)) ==
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(T1_SIG_W | T1_SGN_W)), 1);
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vc = int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
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T1_SIG_N) + ((f & (T1_SIG_S | T1_SGN_S)) == T1_SIG_S),
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1) - int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
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(T1_SIG_N | T1_SGN_N)) +
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((f & (T1_SIG_S | T1_SGN_S)) ==
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(T1_SIG_S | T1_SGN_S)), 1);
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if (!hc && !vc)
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n = 0;
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else
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n = (!(hc > 0 || (!hc && vc > 0)));
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return n;
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}
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void dump_array16(int array[],int size){
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int i;
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--size;
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for (i = 0; i < size; ++i) {
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printf("0x%04x, ", array[i]);
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if(!((i+1)&0x7))
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printf("\n ");
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}
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printf("0x%04x\n};\n\n", array[size]);
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}
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int main(){
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int i, j;
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double u, v, t;
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int lut_ctxno_zc[1024];
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int lut_nmsedec_sig[1 << T1_NMSEDEC_BITS];
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int lut_nmsedec_sig0[1 << T1_NMSEDEC_BITS];
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int lut_nmsedec_ref[1 << T1_NMSEDEC_BITS];
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int lut_nmsedec_ref0[1 << T1_NMSEDEC_BITS];
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printf("/* This file was automatically generated by t1_generate_luts.c */\n\n");
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/* lut_ctxno_zc */
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for (j = 0; j < 4; ++j) {
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for (i = 0; i < 256; ++i) {
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int orient = j;
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if (orient == 2) {
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orient = 1;
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} else if (orient == 1) {
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orient = 2;
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}
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lut_ctxno_zc[(orient << 8) | i] = t1_init_ctxno_zc(i, j);
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}
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}
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printf("static char lut_ctxno_zc[1024] = {\n ");
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for (i = 0; i < 1023; ++i) {
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printf("%i, ", lut_ctxno_zc[i]);
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if(!((i+1)&0x1f))
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printf("\n ");
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}
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printf("%i\n};\n\n", lut_ctxno_zc[1023]);
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/* lut_ctxno_sc */
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printf("static char lut_ctxno_sc[256] = {\n ");
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for (i = 0; i < 255; ++i) {
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printf("0x%x, ", t1_init_ctxno_sc(i << 4));
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if(!((i+1)&0xf))
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printf("\n ");
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}
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printf("0x%x\n};\n\n", t1_init_ctxno_sc(255 << 4));
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/* lut_spb */
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printf("static char lut_spb[256] = {\n ");
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for (i = 0; i < 255; ++i) {
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printf("%i, ", t1_init_spb(i << 4));
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if(!((i+1)&0x1f))
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printf("\n ");
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}
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printf("%i\n};\n\n", t1_init_spb(255 << 4));
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/* FIXME FIXME FIXME */
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/* fprintf(stdout,"nmsedec luts:\n"); */
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for (i = 0; i < (1 << T1_NMSEDEC_BITS); ++i) {
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t = i / pow(2, T1_NMSEDEC_FRACBITS);
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u = t;
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v = t - 1.5;
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lut_nmsedec_sig[i] =
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int_max(0,
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(int) (floor((u * u - v * v) * pow(2, T1_NMSEDEC_FRACBITS) + 0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
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lut_nmsedec_sig0[i] =
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int_max(0,
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(int) (floor((u * u) * pow(2, T1_NMSEDEC_FRACBITS) + 0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
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u = t - 1.0;
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if (i & (1 << (T1_NMSEDEC_BITS - 1))) {
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v = t - 1.5;
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} else {
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v = t - 0.5;
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}
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lut_nmsedec_ref[i] =
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int_max(0,
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(int) (floor((u * u - v * v) * pow(2, T1_NMSEDEC_FRACBITS) + 0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
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lut_nmsedec_ref0[i] =
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int_max(0,
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(int) (floor((u * u) * pow(2, T1_NMSEDEC_FRACBITS) + 0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
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}
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printf("static short lut_nmsedec_sig[1 << T1_NMSEDEC_BITS] = {\n ");
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dump_array16(lut_nmsedec_sig, 1 << T1_NMSEDEC_BITS);
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printf("static short lut_nmsedec_sig0[1 << T1_NMSEDEC_BITS] = {\n ");
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dump_array16(lut_nmsedec_sig0, 1 << T1_NMSEDEC_BITS);
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printf("static short lut_nmsedec_ref[1 << T1_NMSEDEC_BITS] = {\n ");
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dump_array16(lut_nmsedec_ref, 1 << T1_NMSEDEC_BITS);
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printf("static short lut_nmsedec_ref0[1 << T1_NMSEDEC_BITS] = {\n ");
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dump_array16(lut_nmsedec_ref0, 1 << T1_NMSEDEC_BITS);
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return 0;
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}
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