Adding perf test

tests/CMakeLists.txt

@@ -10,6 +10,8 @@ set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
 FetchContent_MakeAvailable(googletest)
 include(GoogleTest)
 
+add_subdirectory(perf)
+
 set(TEST_SOURCES
     main_tests.cpp
     basic_oscillators_tests.cpp

tests/perf/CMakeLists.txt

@@ -0,0 +1,17 @@
+FetchContent_Declare(
+    nanobench
+    GIT_REPOSITORY https://github.com/martinus/nanobench.git
+    GIT_TAG v4.1.0
+    GIT_SHALLOW TRUE)
+
+FetchContent_Declare(
+    doctest
+    GIT_REPOSITORY https://github.com/doctest/doctest.git
+    GIT_TAG v2.4.11
+    GIT_SHALLOW TRUE)
+
+FetchContent_MakeAvailable(nanobench doctest)
+
+add_executable(perf_tests perf_tests.cpp basicosc_perf.cpp)
+target_include_directories(perf_tests PRIVATE ${doctest_SOURCE_DIR}/doctest)
+target_link_libraries(perf_tests PRIVATE nanobench dsp doctest)

tests/perf/basicosc_perf.cpp

@@ -0,0 +1,49 @@
+#include "doctest.h"
+#include "nanobench.h"
+#include <chrono>
+
+#include "basic_oscillators.h"
+
+using namespace ankerl;
+using namespace std::chrono_literals;
+
+constexpr size_t kSamplerate = 48000;
+constexpr size_t kOutputSize = kSamplerate * 5;
+constexpr float kFreq = 750;
+constexpr size_t kBlockSize = 512;
+
+// Render 5 second of audio
+TEST_CASE("Sine")
+{
+    sfdsp::BasicOscillator osc;
+    osc.Init(kSamplerate, kFreq, sfdsp::OscillatorType::Sine);
+    auto out = std::make_unique<float[]>(kOutputSize);
+
+    nanobench::Bench bench;
+    bench.title("BasicOscillator (Sine)");
+    bench.relative(true);
+    bench.minEpochIterations(5);
+    bench.timeUnit(1ms, "ms");
+
+    bench.run("BasicOscillator::ProcessBlock (Sine)", [&]() {
+        const size_t block_count = kOutputSize / kBlockSize;
+        float* write_ptr = out.get();
+        for (size_t i = 0; i < block_count; ++i)
+        {
+            osc.ProcessBlock(write_ptr, kBlockSize);
+            write_ptr += kBlockSize;
+        }
+
+        // Process reminder
+        const size_t reminder = kOutputSize % kBlockSize;
+        osc.ProcessBlock(write_ptr, reminder);
+    });
+
+    sfdsp::BasicOscillator osc2;
+    osc2.Init(kSamplerate, kFreq, sfdsp::OscillatorType::Sine);
+
+    bench.run("BasicOscillator::Tick (Sine)", [&]() {
+        for (auto i = 0; i < kOutputSize; ++i)
+            out[i] = osc2.Tick();
+    });
+}

tests/perf/perf_tests.cpp

@@ -0,0 +1,2 @@
+#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+#include "doctest.h"