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-rw-r--r--third_party/libopenjpeg20/t1_generate_luts.c282
1 files changed, 282 insertions, 0 deletions
diff --git a/third_party/libopenjpeg20/t1_generate_luts.c b/third_party/libopenjpeg20/t1_generate_luts.c
new file mode 100644
index 0000000000..1997d39977
--- /dev/null
+++ b/third_party/libopenjpeg20/t1_generate_luts.c
@@ -0,0 +1,282 @@
+/*
+ * The copyright in this software is being made available under the 2-clauses
+ * BSD License, included below. This software may be subject to other third
+ * party and contributor rights, including patent rights, and no such rights
+ * are granted under this license.
+ *
+ * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
+ * Copyright (c) 2002-2014, Professor Benoit Macq
+ * Copyright (c) 2001-2003, David Janssens
+ * Copyright (c) 2002-2003, Yannick Verschueren
+ * Copyright (c) 2003-2007, Francois-Olivier Devaux
+ * Copyright (c) 2003-2014, 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"
+
+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 = opj_int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
+ T1_SIG_E) + ((f & (T1_SIG_W | T1_SGN_W)) == T1_SIG_W),
+ 1) - opj_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 = opj_int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
+ T1_SIG_N) + ((f & (T1_SIG_S | T1_SGN_S)) == T1_SIG_S),
+ 1) - opj_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_spb(int f) {
+ int hc, vc, n;
+
+ hc = opj_int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
+ T1_SIG_E) + ((f & (T1_SIG_W | T1_SGN_W)) == T1_SIG_W),
+ 1) - opj_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 = opj_int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
+ T1_SIG_N) + ((f & (T1_SIG_S | T1_SGN_S)) == T1_SIG_S),
+ 1) - opj_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 dump_array16(int array[],int size){
+ int i;
+ --size;
+ for (i = 0; i < size; ++i) {
+ printf("0x%04x, ", array[i]);
+ if(!((i+1)&0x7))
+ printf("\n ");
+ }
+ printf("0x%04x\n};\n\n", array[size]);
+}
+
+int main(int argc, char **argv)
+{
+ int i, j;
+ double u, v, t;
+
+ int lut_ctxno_zc[1024];
+ int lut_nmsedec_sig[1 << T1_NMSEDEC_BITS];
+ int lut_nmsedec_sig0[1 << T1_NMSEDEC_BITS];
+ int lut_nmsedec_ref[1 << T1_NMSEDEC_BITS];
+ int lut_nmsedec_ref0[1 << T1_NMSEDEC_BITS];
+ (void)argc; (void)argv;
+
+ printf("/* This file was automatically generated by t1_generate_luts.c */\n\n");
+
+ /* lut_ctxno_zc */
+ for (j = 0; j < 4; ++j) {
+ for (i = 0; i < 256; ++i) {
+ int orient = j;
+ if (orient == 2) {
+ orient = 1;
+ } else if (orient == 1) {
+ orient = 2;
+ }
+ lut_ctxno_zc[(orient << 8) | i] = t1_init_ctxno_zc(i, j);
+ }
+ }
+
+ printf("static OPJ_BYTE lut_ctxno_zc[1024] = {\n ");
+ for (i = 0; i < 1023; ++i) {
+ printf("%i, ", lut_ctxno_zc[i]);
+ if(!((i+1)&0x1f))
+ printf("\n ");
+ }
+ printf("%i\n};\n\n", lut_ctxno_zc[1023]);
+
+ /* lut_ctxno_sc */
+ printf("static OPJ_BYTE lut_ctxno_sc[256] = {\n ");
+ for (i = 0; i < 255; ++i) {
+ printf("0x%x, ", t1_init_ctxno_sc(i << 4));
+ if(!((i+1)&0xf))
+ printf("\n ");
+ }
+ printf("0x%x\n};\n\n", t1_init_ctxno_sc(255 << 4));
+
+ /* lut_spb */
+ printf("static OPJ_BYTE lut_spb[256] = {\n ");
+ for (i = 0; i < 255; ++i) {
+ printf("%i, ", t1_init_spb(i << 4));
+ if(!((i+1)&0x1f))
+ printf("\n ");
+ }
+ printf("%i\n};\n\n", t1_init_spb(255 << 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;
+ lut_nmsedec_sig[i] =
+ opj_int_max(0,
+ (int) (floor((u * u - v * v) * pow(2, T1_NMSEDEC_FRACBITS) + 0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
+ lut_nmsedec_sig0[i] =
+ opj_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;
+ }
+ lut_nmsedec_ref[i] =
+ opj_int_max(0,
+ (int) (floor((u * u - v * v) * pow(2, T1_NMSEDEC_FRACBITS) + 0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
+ lut_nmsedec_ref0[i] =
+ opj_int_max(0,
+ (int) (floor((u * u) * pow(2, T1_NMSEDEC_FRACBITS) + 0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
+ }
+
+ printf("static OPJ_INT16 lut_nmsedec_sig[1 << T1_NMSEDEC_BITS] = {\n ");
+ dump_array16(lut_nmsedec_sig, 1 << T1_NMSEDEC_BITS);
+
+ printf("static OPJ_INT16 lut_nmsedec_sig0[1 << T1_NMSEDEC_BITS] = {\n ");
+ dump_array16(lut_nmsedec_sig0, 1 << T1_NMSEDEC_BITS);
+
+ printf("static OPJ_INT16 lut_nmsedec_ref[1 << T1_NMSEDEC_BITS] = {\n ");
+ dump_array16(lut_nmsedec_ref, 1 << T1_NMSEDEC_BITS);
+
+ printf("static OPJ_INT16 lut_nmsedec_ref0[1 << T1_NMSEDEC_BITS] = {\n ");
+ dump_array16(lut_nmsedec_ref0, 1 << T1_NMSEDEC_BITS);
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 06:35:47 +0000