cosmopolitan/test/tool/viz/lib/bilinearscale_test.c

147 lines
6.8 KiB
C
Raw Blame History

This file contains invisible Unicode characters!

This file contains invisible Unicode characters that may be processed differently from what appears below. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to reveal hidden characters.

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ This program is free software; you can redistribute it and/or modify │
│ it under the terms of the GNU General Public License as published by │
│ the Free Software Foundation; version 2 of the License. │
│ │
│ This program is distributed in the hope that it will be useful, but │
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/log/log.h"
#include "libc/rand/rand.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/testlib.h"
#include "tool/viz/lib/bilinearscale.h"
#include "tool/viz/lib/graphic.h"
TEST(BilinearScale, testWindmill_1x1_to_2x2) {
EXPECT_BINEQ(
u"λλ"
u"λλ",
BilinearScale(1, 2, 2, tgc(tmalloc(1 * 2 * 2)), 1, 1, 1,
tgc(tunbing(u"λ")), 0, 1, 2, 2, 1, 1, .5, .5, 0, 0));
}
TEST(BilinearScale, testWindmill_4x4_to_2x2) {
EXPECT_BINEQ(u"λ "
u" λ",
BilinearScale(1, 2, 2, tgc(tmalloc(2 * 2)), 1, 4, 4,
tgc(tunbing(u"λλ  "
u"λλ  "
u"  λλ"
u"  λλ")),
0, 1, 2, 2, 4, 4, 2, 2, 0, 0));
}
TEST(BilinearScale, testWindmill_8x8_to_4x4) {
EXPECT_BINEQ(u"λλ  "
u"λλ  "
u"  λλ"
u"  λλ",
BilinearScale(1, 4, 4, tgc(tmalloc(4 * 4)), 1, 8, 8,
tgc(tunbing(u"λλλλ    "
u"λλλλ    "
u"λλλλ    "
u"λλλλ    "
u"    λλλλ"
u"    λλλλ"
u"    λλλλ"
u"    λλλλ")),
0, 1, 4, 4, 8, 8, 2, 2, 0, 0));
}
TEST(BilinearScale, testWindmill_4x4_to_8x8) {
EXPECT_BINEQ(u"λλλλ┐   "
u"λλλλ┐   "
u"λλλλ┐   "
u"λλλλ┐   "
u"┐┐┐┐ƒ⁇⁇⁇"
u"    ⁇λλλ"
u"    ⁇λλλ"
u"    ⁇λλλ",
BilinearScale(1, 8, 8, tgc(tmalloc(8 * 8)), 1, 4, 4,
tgc(tunbing(u"λλ  "
u"λλ  "
u"  λλ"
u"  λλ")),
0, 1, 8, 8, 4, 4, .5, .5, 0, 0));
}
TEST(BilinearScale, testWindmill_5x5_to_8x8_withRatioIntent) {
EXPECT_BINEQ(u"λλλλλ   "
u"λλλλλ   "
u"λλλλλ   "
u"¬¬¬╞λTTT"
u"   Tλλλλ"
u"     λλλ"
u"     λλλ"
u"     λλλ",
BilinearScale(1, 8, 8, tgc(tmalloc(8 * 8)), 1, 5, 5,
tgc(tunbing(u"λλλ  "
u"λλλ  "
u"  λλλ"
u"   λλ"
u"   λλ")),
0, 1, 8, 8, 5, 5, 2 / 3., 2 / 3., 0, 0));
}
TEST(BilinearScale, testWindmill_5x5_to_8x8_withoutRatioIntent) {
EXPECT_BINEQ(u"λλλλλÅ  "
u"λλλλλÅ  "
u"λλλλλÅ  "
u"╧╧╧╪λñ//"
u"   /λλλλ"
u"   →Å└λλ"
u"     oλλ"
u"     oλλ",
BilinearScale(1, 8, 8, tgc(tmalloc(8 * 8)), 1, 5, 5,
tgc(tunbing(u"λλλ  "
u"λλλ  "
u"  λλλ"
u"   λλ"
u"   λλ")),
0, 1, 8, 8, 5, 5, 5 / 8., 5 / 8., 0, 0));
}
TEST(BilinearScale, testNyquistTorture) {
EXPECT_BINEQ(u"███ "
u"████"
u" ███"
u"███ ",
BilinearScale(1, 4, 4, tgc(tmalloc(4 * 4)), 1, 8, 8,
tgc(tunbing(u"█ █ █ "
u" █ █ █ "
u"█ █ █ █ "
u" █ █ █ █"
u" █ █ █ "
u" █ █ █ "
u"█ █ █ "
u" █ █ ")),
0, 1, 4, 4, 8, 8, 2, 2, 0, 0));
}
BENCH(BilinearScale, Bench) {
void *src, *dst;
double c, w1, h1, w2, h2;
c = 3;
w1 = 1920;
h1 = 1080;
w2 = 1136;
h2 = 136;
src = tgc(tmemalign(32, w1 * h1 * c));
dst = tgc(tmemalign(32, w2 * h2 * c));
EZBENCH2("BilinearScale", donothing,
BilinearScale(c, h2, w2, dst, c, h1, w1, src, 0, c, h2, w2, h1, w1,
h2 / h1, w2 / w1, 0, 0));
}