shawn
5fd5946ff6
C++ backend (fully implemented): - MidiMapper: CC processing, mapping table, JSON persistence, learn mode - MidiLearnMode: 3-step learn workflow state machine - MixerEngine::processMidiEvent() wired into AudioHost MIDI pipeline - MixerApi + PiPedalSocket: all WS handlers (getMidiMappings, setMidiLearnMode, setMidiLearnTarget, commitMidiLearn, etc.) React frontend (new): - MidiMappingPanel: dialog with learn mode toggle, CC capture polling, commit workflow, current mappings list with delete, manual add - MixerPage: MIDI button in toolbar, learn mode state management - ChannelStrip + MasterBus: learn mode callbacks on fader/mute/solo touch
67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
// Copyright (c) 2026 Ourpad Network
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// See LICENSE file in the project root for full license text.
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#pragma once
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#include <cstdint>
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#include <mutex>
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#include "MidiMapper.hpp"
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namespace pipedal {
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/// MIDI Learn mode state machine.
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///
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/// Tracks the three-step learn workflow:
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/// 1. User enables learn mode and touches a UI control (setPendingTarget)
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/// 2. User moves a hardware fader — the CC event is captured (captureEvent)
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/// 3. User confirms — a new MidiMappingEntry is created (commitMapping)
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///
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class MidiLearnMode {
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public:
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MidiLearnMode();
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~MidiLearnMode();
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/// Enable or disable learn mode.
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void setEnabled(bool enabled);
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bool isEnabled() const { return enabled_; }
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/// Set the mixer parameter that should receive the next learned mapping.
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/// Call this when the user touches a UI control while in learn mode.
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void setPendingTarget(MidiTargetType type, int64_t id);
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/// Get the current pending target.
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bool getPendingTarget(MidiTargetType& outType, int64_t& outId) const;
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/// Capture a MIDI CC event while in learn mode.
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/// Call this from the RT audio thread when processEvent sees a CC.
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void captureEvent(int midiChannel, int ccNumber);
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/// Check if a CC event has been captured since learn mode was entered
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/// or since the last clear().
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bool hasCapturedEvent() const;
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/// Get the last captured CC event info.
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/// Returns true if an event was captured.
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bool getCapturedEvent(int& outMidiChannel, int& outCcNumber) const;
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/// Build a MidiMappingEntry from pending target + captured event.
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/// Clears the captured event after building (avoids stale recomit).
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MidiMappingEntry buildMapping() const;
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/// Clear captured event without committing.
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void clearCapturedEvent();
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/// Reset all learn state.
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void reset();
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private:
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bool enabled_ = false;
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MidiTargetType pendingTargetType_ = MidiTargetType::ChannelVolume;
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int64_t pendingTargetId_ = 0;
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int capturedMidiChannel_ = -1;
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int capturedCcNumber_ = -1;
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mutable std::mutex mutex_;
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};
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} // namespace pipedal
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