123 lines
4.3 KiB
C++
123 lines
4.3 KiB
C++
// SPDX-License-Identifier: BSD-2-Clause
|
|
|
|
// This code is part of the sfizz library and is licensed under a BSD 2-clause
|
|
// license. You should have receive a LICENSE.md file along with the code.
|
|
// If not, contact the sfizz maintainers at https://github.com/sfztools/sfizz
|
|
|
|
#include "sfizz/Tuning.h"
|
|
#include "sfizz/MathHelpers.h"
|
|
#include "catch2/catch.hpp"
|
|
|
|
TEST_CASE("[Tuning] Default tuning")
|
|
{
|
|
sfz::Tuning defaultTuning;
|
|
|
|
for (int key = 0; key < 128; ++key)
|
|
REQUIRE(defaultTuning.getFrequencyOfKey(key) == Approx(midiNoteFrequency(key)));
|
|
}
|
|
|
|
TEST_CASE("[Tuning] Railsback disabled")
|
|
{
|
|
auto tuning = sfz::StretchTuning::createRailsbackFromRatio(0.0f);
|
|
for (int key = 0; key < 128; ++key)
|
|
REQUIRE(tuning.getRatioForIntegralKey(key) == 1.0f);
|
|
}
|
|
|
|
TEST_CASE("[Tuning] Stretch integral == float")
|
|
{
|
|
auto tuning = sfz::StretchTuning::createRailsbackFromRatio(0.25f);
|
|
for (int key = 0; key < 128; ++key)
|
|
REQUIRE(tuning.getRatioForIntegralKey(key) == tuning.getRatioForFractionalKey(static_cast<float>(key)));
|
|
}
|
|
|
|
TEST_CASE("[Tuning] Stretch definition points")
|
|
{
|
|
SECTION("For 0.5f")
|
|
{
|
|
static constexpr float railsback[128] = {
|
|
#include "sfizz/railsback/4-1.h"
|
|
};
|
|
auto tuning = sfz::StretchTuning::createRailsbackFromRatio(0.5f);
|
|
for (int key = 0; key < 128; ++key)
|
|
REQUIRE(tuning.getRatioForIntegralKey(key) == railsback[key]);
|
|
}
|
|
SECTION("For 1.0f")
|
|
{
|
|
static constexpr float railsback[128] = {
|
|
#include "sfizz/railsback/4-2.h"
|
|
};
|
|
auto tuning = sfz::StretchTuning::createRailsbackFromRatio(1.0f);
|
|
for (int key = 0; key < 128; ++key)
|
|
REQUIRE(tuning.getRatioForIntegralKey(key) == railsback[key]);
|
|
}
|
|
|
|
SECTION("For 0.25f")
|
|
{
|
|
static constexpr float railsback[128] = {
|
|
#include "sfizz/railsback/2-1.h"
|
|
};
|
|
auto tuning = sfz::StretchTuning::createRailsbackFromRatio(0.25f);
|
|
for (int key = 0; key < 128; ++key)
|
|
REQUIRE(tuning.getRatioForIntegralKey(key) == railsback[key]);
|
|
}
|
|
}
|
|
|
|
TEST_CASE("[Tuning] Stretch interpolation bounds")
|
|
{
|
|
SECTION("Between 0 and 0.25f")
|
|
{
|
|
static constexpr float bound1[128] = {
|
|
#include "sfizz/railsback/2-1.h"
|
|
};
|
|
auto tuning = sfz::StretchTuning::createRailsbackFromRatio(0.1f);
|
|
for (int key = 0; key < 128; ++key) {
|
|
if (bound1[key] < 1.0f) {
|
|
REQUIRE(tuning.getRatioForIntegralKey(key) >= bound1[key]);
|
|
REQUIRE(tuning.getRatioForIntegralKey(key) <= 1.0f);
|
|
} else {
|
|
REQUIRE(tuning.getRatioForIntegralKey(key) <= bound1[key]);
|
|
REQUIRE(tuning.getRatioForIntegralKey(key) >= 1.0f);
|
|
}
|
|
}
|
|
}
|
|
SECTION("Between 0.25f and 0.5f")
|
|
{
|
|
static constexpr float bound1[128] = {
|
|
#include "sfizz/railsback/2-1.h"
|
|
};
|
|
static constexpr float bound2[128] = {
|
|
#include "sfizz/railsback/4-1.h"
|
|
};
|
|
auto tuning = sfz::StretchTuning::createRailsbackFromRatio(0.3f);
|
|
for (int key = 0; key < 128; ++key) {
|
|
if (bound1[key] < bound2[key]) {
|
|
REQUIRE(tuning.getRatioForIntegralKey(key) >= bound1[key]);
|
|
REQUIRE(tuning.getRatioForIntegralKey(key) <= bound2[key]);
|
|
} else {
|
|
REQUIRE(tuning.getRatioForIntegralKey(key) <= bound1[key]);
|
|
REQUIRE(tuning.getRatioForIntegralKey(key) >= bound2[key]);
|
|
}
|
|
}
|
|
}
|
|
SECTION("Between 0.5f and 1.0f")
|
|
{
|
|
static constexpr float bound1[128] = {
|
|
#include "sfizz/railsback/4-1.h"
|
|
};
|
|
static constexpr float bound2[128] = {
|
|
#include "sfizz/railsback/4-2.h"
|
|
};
|
|
auto tuning = sfz::StretchTuning::createRailsbackFromRatio(0.7f);
|
|
for (int key = 0; key < 128; ++key) {
|
|
if (bound1[key] < bound2[key]) {
|
|
REQUIRE(tuning.getRatioForIntegralKey(key) >= bound1[key]);
|
|
REQUIRE(tuning.getRatioForIntegralKey(key) <= bound2[key]);
|
|
} else {
|
|
REQUIRE(tuning.getRatioForIntegralKey(key) <= bound1[key]);
|
|
REQUIRE(tuning.getRatioForIntegralKey(key) >= bound2[key]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|