settings, toggles, and more

tui/src/spectrum_peak_model.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <optional>
+#include <string>
+#include <vector>
+
+namespace Prism::Tui {
+
+struct SpectrumPeakInfo {
+    float dbfs = -100.0f;
+    float frequencyHz = 0.0f;
+    std::string pitch;
+};
+
+std::string formatSpectrumPitch(float frequencyHz);
+
+class SpectrumPeakTracker {
+public:
+    std::optional<SpectrumPeakInfo> select(const std::vector<float>& magnitudes,
+                                           float sampleRate,
+                                           size_t fftSize,
+                                           float tiltDbPerOctave);
+    void reset();
+
+private:
+    std::optional<SpectrumPeakInfo> previous_;
+};
+
+}  // namespace Prism::Tui