5cd5041b6a
Stream 3's NoOpEngine used engine_id()=='noop' but the schema for sound_analysis_midi.json declares engine_id: 'thru' (matches firmware's ThruAudioApp naming). The class name stays NoOpEngine — it accurately describes what process() does — but the schema-facing identifier is now 'thru'. BreakOr/Elysiamorf compose NoOpEngine by type, not engine_id, so they're unaffected.
43 lines
1.4 KiB
C++
43 lines
1.4 KiB
C++
// nisps/engines/base.hpp — common building blocks for AudioEngine
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// implementations.
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//
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// Includes:
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// - NoOpEngine: silent passthrough. Two uses:
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// (1) the standalone "thru" engine for the SoundAnalysisMIDI mode (audio
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// is analysed but not synthesised), exposed via engine_id()=="thru";
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// (2) composed inside sequencer-only engines (BreakOr, Elysiamorf) whose
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// MIDI/I2C event emission lives outside the audio path. Internal
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// composition uses the type directly, not the engine_id lookup.
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// - Helper macros / static_asserts to verify each concrete engine satisfies
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// `nisps::AudioEngine` at compile time.
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#pragma once
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#include <cstddef>
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#include <span>
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#include <string_view>
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#include "../core/concepts.hpp"
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#include "../core/perf.hpp"
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#include "../core/types.hpp"
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namespace nisps {
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class NoOpEngine {
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public:
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static constexpr std::size_t param_count() noexcept { return 0u; }
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static constexpr std::string_view engine_id() noexcept { return "thru"; }
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void setup(float /*sample_rate*/) noexcept {}
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void set_params(std::span<const float> /*params*/) noexcept {}
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NISPS_HOT NISPS_FORCE_INLINE stereosample_t process(stereosample_t /*x*/) noexcept {
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return {0.f, 0.f};
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}
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DriverConfig driver_config() const noexcept { return {}; }
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};
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static_assert(AudioEngine<NoOpEngine>, "NoOpEngine must satisfy AudioEngine");
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} // namespace nisps
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