shawn
a5423b7f55
Extracted from op-pedal mixer-engine branch. Core components: - MixerEngine / MixerChannelStrip / MixerBus — cleaned of LV2/Pedalboard/IHost/MidiMapper deps - MixerControlServer — Unix domain socket JSON control interface - main.cpp — JACK audio I/O client with headless fallback - CMake build — auto-fetches nlohmann/json, links JACK - 9 core tests passing Architecture: JACK ports → MixerEngine::process() → JACK ports, controlled via Unix socket JSON commands.
78 lines
2.6 KiB
C++
78 lines
2.6 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 <string>
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#include <thread>
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#include <atomic>
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#include "mixer/MixerEngine.hpp"
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namespace mixer {
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/// Unix domain socket JSON control server for the MixerEngine.
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///
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/// Listens on a Unix domain socket (default: /tmp/mixer-daemon.sock).
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/// Each client connection sends one JSON command per line and receives
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/// one JSON response per line.
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///
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/// Supported commands:
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/// {"cmd":"getState"} → full mixer state snapshot
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/// {"cmd":"getVU"} → VU levels for all channels
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/// {"cmd":"setChannelVolume","channel":N,"volume":-6.0}
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/// {"cmd":"setChannelPan","channel":N,"pan":0.0}
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/// {"cmd":"setChannelMute","channel":N,"mute":true}
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/// {"cmd":"setChannelSolo","channel":N,"solo":false}
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/// {"cmd":"setChannelLabel","channel":N,"label":"Guitar"}
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/// {"cmd":"setBusVolume","busId":N,"volume":0.0}
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/// {"cmd":"setBusMute","busId":N,"mute":false}
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/// {"cmd":"routeChannelToBus","channel":N,"busId":N,"level":0.0}
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/// {"cmd":"routeBusToBus","sourceBusId":N,"targetBusId":N,"level":0.0}
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/// {"cmd":"removeRoute","sourceId":N,"targetBusId":N}
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/// {"cmd":"autoCreateChannels","inputs":N,"outputs":N}
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/// {"cmd":"addChannel","physicalInput":N} → {"status":"ok","channelIndex":N}
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/// {"cmd":"removeChannel","channel":N}
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class MixerControlServer {
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public:
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MixerControlServer(MixerEngine* engine, const std::string& socketPath = "/tmp/mixer-daemon.sock");
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~MixerControlServer();
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// Disable copy
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MixerControlServer(const MixerControlServer&) = delete;
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MixerControlServer& operator=(const MixerControlServer&) = delete;
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/// Start the control server in a background thread.
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/// Returns true if the socket was created successfully.
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bool start();
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/// Stop the control server and join the thread.
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void stop();
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/// True if the server is running.
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bool running() const { return running_.load(); }
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private:
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MixerEngine* engine_;
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std::string socketPath_;
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int serverFd_ = -1;
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std::thread serverThread_;
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std::atomic<bool> running_{false};
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// Server thread main loop
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void serverLoop();
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// Handle one client connection
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void handleClient(int clientFd);
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// Process a single JSON command and return JSON response
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std::string processCommand(const std::string& commandJson);
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// Helper: build full state JSON
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std::string buildStateJson() const;
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// Helper: build VU JSON
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std::string buildVuJson() const;
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};
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} // namespace mixer
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