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#include "test_helpers.h"
#include "video/out/gl_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_double_equal(x, 2.40f);
x = gl_video_scale_ambient_lux(16.0, 64.0, 2.40, 1.961, 64.0);
assert_double_equal(x, 1.961f);
}
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_double_equal(x, 2.40f);
}
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_double_equal(x, 2.40f);
}
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_double_equal(x, mid_gamma);
}
int main(void) {
const UnitTest tests[] = {
unit_test(test_scale_ambient_lux_limits),
unit_test(test_scale_ambient_lux_sign),
unit_test(test_scale_ambient_lux_clamping),
unit_test(test_scale_ambient_lux_log10_midpoint),
};
return run_tests(tests);
}
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