summaryrefslogtreecommitdiffstats
path: root/test/gl_video.c
blob: 91271bd2d69a27536e2f6ba1068ec77a2ac7830e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
#include "test_helpers.h"
#include "video/out/gpu/video.h"

static void test_scale_ambient_lux_limits(void **state) {
    float x;
    x = gl_video_scale_ambient_lux(16.0, 64.0, 2.40, 1.961, 16.0);
    assert_float_equal(x, 2.40f, FLT_EPSILON);

    x = gl_video_scale_ambient_lux(16.0, 64.0, 2.40, 1.961, 64.0);
    assert_float_equal(x, 1.961f, FLT_EPSILON);
}

static void test_scale_ambient_lux_sign(void **state) {
    float x;
    x = gl_video_scale_ambient_lux(16.0, 64.0, 1.961, 2.40, 64.0);
    assert_float_equal(x, 2.40f, FLT_EPSILON);
}

static void test_scale_ambient_lux_clamping(void **state) {
    float x;
    x = gl_video_scale_ambient_lux(16.0, 64.0, 2.40, 1.961, 0.0);
    assert_float_equal(x, 2.40f, FLT_EPSILON);
}

static void test_scale_ambient_lux_log10_midpoint(void **state) {
    float x;
    // 32 corresponds to the the midpoint after converting lux to the log10 scale
    x = gl_video_scale_ambient_lux(16.0, 64.0, 2.40, 1.961, 32.0);
    float mid_gamma = (2.40 - 1.961) / 2 + 1.961;
    assert_float_equal(x, mid_gamma, FLT_EPSILON);
}

int main(void) {
    const struct CMUnitTest tests[] = {
        cmocka_unit_test(test_scale_ambient_lux_limits),
        cmocka_unit_test(test_scale_ambient_lux_sign),
        cmocka_unit_test(test_scale_ambient_lux_clamping),
        cmocka_unit_test(test_scale_ambient_lux_log10_midpoint),
    };
    return cmocka_run_group_tests(tests, NULL, NULL);
}