micheleandCursor
fa532e068f
Expose POST /api/audio/stereo-enhance and bass-enhance with 0–100 levels, persist enhancements in AudioProfile, and document the virtual EQ mapping in the manual and SigmaStudio chapter. Co-authored-by: Cursor <cursoragent@cursor.com>
71 lines
1.9 KiB
C++
71 lines
1.9 KiB
C++
/**
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* @file EnhancementsDesign.cpp
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* @brief Enhancement-to-EQ mapping implementation.
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*
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* DigiRadio firmware — https://github.com/manvalan/DigiRadio
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*
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* Copyright 2026 Michele Bigi
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* SPDX-License-Identifier: Apache-2.0
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*
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* @author Michele Bigi
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* @date 2026-07-06
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*/
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#include "core/EnhancementsDesign.hpp"
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#include "core/EqBandIndex.hpp"
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#include "core/FrequencyHz.hpp"
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#include "core/GainDb.hpp"
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namespace core {
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namespace {
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void setBand(EqProfile& profile, std::uint8_t index, GainDb gain,
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FrequencyHz center, float q) noexcept
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{
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const auto band = EqBandIndex::tryFromIndex(index);
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if (!band) {
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return;
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}
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profile.setBand(*band, EqBandSettings{
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.gain = gain,
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.center = center,
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.q = q,
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});
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}
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[[nodiscard]] GainDb gainFromDb(float db) noexcept
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{
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return *GainDb::tryFromDb(db);
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}
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} // namespace
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EqProfile applyEnhancementsToEq(const EqProfile& base,
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const AudioEnhancements& enhancements) noexcept
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{
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EqProfile profile = base;
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if (enhancements.bass.value() > 0U) {
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const float t = enhancements.bass.fraction();
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setBand(profile, 1U, gainFromDb(9.0F * t),
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*FrequencyHz::tryFromHz(100U), 0.9F);
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setBand(profile, 2U, gainFromDb(3.0F * t),
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*FrequencyHz::tryFromHz(400U), 1.0F);
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}
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if (enhancements.stereo.value() > 0U) {
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const float t = enhancements.stereo.fraction();
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setBand(profile, 3U, gainFromDb(-1.5F * t),
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*FrequencyHz::tryFromHz(1000U), 1.0F);
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setBand(profile, 4U, gainFromDb(2.0F * t),
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*FrequencyHz::tryFromHz(3000U), 1.0F);
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setBand(profile, 5U, gainFromDb(4.0F * t),
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*FrequencyHz::tryFromHz(8000U), 1.0F);
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}
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return profile;
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}
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} // namespace core
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