194 lines
6.3 KiB
C++
194 lines
6.3 KiB
C++
// SPDX-License-Identifier: BSD-2-Clause
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// This code is part of the sfizz library and is licensed under a BSD 2-clause
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// license. You should have receive a LICENSE.md file along with the code.
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// If not, contact the sfizz maintainers at https://github.com/sfztools/sfizz
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#include "sfizz/ADSREnvelope.h"
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#include "catch2/catch.hpp"
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#include <absl/algorithm/container.h>
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#include <absl/types/span.h>
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#include <algorithm>
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#include <array>
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#include <iostream>
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using namespace Catch::literals;
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template <class Type>
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inline bool approxEqual(absl::Span<const Type> lhs, absl::Span<const Type> rhs, Type eps = 1e-3)
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{
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if (lhs.size() != rhs.size())
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return false;
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for (size_t i = 0; i < rhs.size(); ++i)
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if (rhs[i] != Approx(lhs[i]).epsilon(eps)) {
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std::cerr << lhs[i] << " != " << rhs[i] << " at index " << i << '\n';
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return false;
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}
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return true;
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}
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TEST_CASE("[ADSREnvelope] Basic state")
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{
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sfz::ADSREnvelope<float> envelope;
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std::array<float, 5> output;
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std::array<float, 5> expected { 0.0, 0.0, 0.0, 0.0, 0.0 };
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for (auto& out : output)
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out = envelope.getNextValue();
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REQUIRE(approxEqual<float>(output, expected));
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absl::c_fill(output, -1.0f);
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envelope.getBlock(absl::MakeSpan(output));
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REQUIRE(approxEqual<float>(output, expected));
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}
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TEST_CASE("[ADSREnvelope] Attack")
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{
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sfz::ADSREnvelope<float> envelope;
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envelope.reset(2, 0);
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std::array<float, 5> output;
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std::array<float, 5> expected { 0.5f, 1.0f, 1.0f, 1.0f, 1.0f };
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for (auto& out : output)
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out = envelope.getNextValue();
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REQUIRE(approxEqual<float>(output, expected));
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envelope.reset(2, 0);
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absl::c_fill(output, -1.0f);
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envelope.getBlock(absl::MakeSpan(output));
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REQUIRE(approxEqual<float>(output, expected));
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}
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TEST_CASE("[ADSREnvelope] Attack again")
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{
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sfz::ADSREnvelope<float> envelope;
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envelope.reset(3, 0);
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std::array<float, 5> output;
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std::array<float, 5> expected { 0.33333f, 0.66667f, 1.0f, 1.0f, 1.0f };
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for (auto& out : output)
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out = envelope.getNextValue();
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REQUIRE(approxEqual<float>(output, expected));
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envelope.reset(3, 0);
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absl::c_fill(output, -1.0f);
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envelope.getBlock(absl::MakeSpan(output));
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REQUIRE(approxEqual<float>(output, expected));
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}
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TEST_CASE("[ADSREnvelope] Release")
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{
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sfz::ADSREnvelope<float> envelope;
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envelope.reset(2, 4);
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envelope.startRelease(2);
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std::array<float, 8> output;
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std::array<float, 8> expected { 0.5f, 1.0f, 0.08409f, 0.00707f, 0.000594604f, 0.00005f, 0.0f, 0.0f };
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for (auto& out : output)
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out = envelope.getNextValue();
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REQUIRE(approxEqual<float>(output, expected));
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envelope.reset(2, 4);
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envelope.startRelease(2);
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absl::c_fill(output, -1.0f);
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envelope.getBlock(absl::MakeSpan(output));
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REQUIRE(approxEqual<float>(output, expected));
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}
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TEST_CASE("[ADSREnvelope] Delay")
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{
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sfz::ADSREnvelope<float> envelope;
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envelope.reset(2, 4, 1.0f, 2);
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std::array<float, 10> output;
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envelope.startRelease(4);
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std::array<float, 10> expected { 0.0f, 0.0f, 0.5f, 1.0f, 0.08409f, 0.00707f, 0.000594604f, 0.00005f, 0.0f, 0.0f };
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for (auto& out : output)
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out = envelope.getNextValue();
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REQUIRE(approxEqual<float>(output, expected));
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envelope.reset(2, 4, 1.0f, 2);
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envelope.startRelease(4);
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absl::c_fill(output, -1.0f);
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envelope.getBlock(absl::MakeSpan(output));
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REQUIRE(approxEqual<float>(output, expected));
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}
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TEST_CASE("[ADSREnvelope] Lower sustain")
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{
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sfz::ADSREnvelope<float> envelope;
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envelope.reset(2, 4, 0.5f, 2);
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std::array<float, 10> output;
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std::array<float, 10> expected { 0.0f, 0.0f, 0.5f, 1.0f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f };
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for (auto& out : output)
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out = envelope.getNextValue();
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REQUIRE(approxEqual<float>(output, expected));
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envelope.reset(2, 4, 0.5, 2);
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absl::c_fill(output, -1.0f);
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envelope.getBlock(absl::MakeSpan(output));
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REQUIRE(approxEqual<float>(output, expected));
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}
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TEST_CASE("[ADSREnvelope] Decay")
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{
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sfz::ADSREnvelope<float> envelope;
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envelope.reset(2, 4, 0.5f, 2, 2);
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std::array<float, 10> output;
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std::array<float, 10> expected { 0.0f, 0.0f, 0.5f, 1.0f, 0.707107f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5 };
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for (auto& out : output)
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out = envelope.getNextValue();
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REQUIRE(approxEqual<float>(output, expected));
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envelope.reset(2, 4, 0.5f, 2, 2);
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absl::c_fill(output, -1.0f);
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envelope.getBlock(absl::MakeSpan(output));
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REQUIRE(approxEqual<float>(output, expected));
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}
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TEST_CASE("[ADSREnvelope] Hold")
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{
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sfz::ADSREnvelope<float> envelope;
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envelope.reset(2, 4, 0.5f, 2, 2, 2);
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std::array<float, 12> output;
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std::array<float, 12> expected { 0.0f, 0.0f, 0.5f, 1.0f, 1.0f, 1.0f, 0.707107f, 0.5f, 0.5f, 0.5f, 0.5f, 0.5f };
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for (auto& out : output)
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out = envelope.getNextValue();
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REQUIRE(approxEqual<float>(output, expected));
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envelope.reset(2, 4, 0.5f, 2, 2, 2);
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absl::c_fill(output, -1.0f);
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envelope.getBlock(absl::MakeSpan(output));
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REQUIRE(approxEqual<float>(output, expected));
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}
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TEST_CASE("[ADSREnvelope] Hold with release")
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{
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sfz::ADSREnvelope<float> envelope;
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envelope.reset(2, 4, 0.5f, 2, 2, 2);
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envelope.startRelease(8);
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std::array<float, 14> output;
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std::array<float, 14> expected { 0.0f, 0.0f, 0.5f, 1.0f, 1.0f, 1.0f, 0.707107f, 0.5f, 0.05f, 0.005f, 0.0005f, 0.00005f, 0.0f, 0.0f };
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for (auto& out : output)
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out = envelope.getNextValue();
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REQUIRE(approxEqual<float>(output, expected));
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envelope.reset(2, 4, 0.5f, 2, 2, 2);
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envelope.startRelease(8);
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absl::c_fill(output, -1.0f);
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envelope.getBlock(absl::MakeSpan(output));
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REQUIRE(approxEqual<float>(output, expected));
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}
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TEST_CASE("[ADSREnvelope] Hold with release 2")
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{
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sfz::ADSREnvelope<float> envelope;
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envelope.reset(2, 4, 0.5f, 2, 2, 2);
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envelope.startRelease(4);
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std::array<float, 14> output;
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std::array<float, 14> expected { 0.0f, 0.0f, 0.5f, 1.0f, 0.08409f, 0.00707f, 0.000594604f, 0.00005f, 0.0f, 0.0f, 0.0f, 0.0 };
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for (auto& out : output)
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out = envelope.getNextValue();
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REQUIRE(approxEqual<float>(output, expected));
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envelope.reset(2, 4, 0.5f, 2, 2, 2);
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envelope.startRelease(4);
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absl::c_fill(output, -1.0f);
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envelope.getBlock(absl::MakeSpan(output));
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REQUIRE(approxEqual<float>(output, expected));
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}
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