First working jukebox using Subsonic API

2026-02-17 23:16:52 +01:00
parent c338521843
commit 3963969cec
39 changed files with 1464 additions and 277 deletions
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2026 Emeric Poupon
+ *
+ * This file is part of LMS.
+ *
+ * LMS is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * LMS is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with LMS.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <chrono>
+#include <optional>
+#include <shared_mutex>
+#include <vector>
+
+#include <boost/asio/io_context.hpp>
+
+#include "core/IOContextRunner.hpp"
+
+#include "audio/IAudioOutput.hpp"
+#include "audio/utils/IPcmDecodeStreamer.hpp"
+
+#include "services/jukebox/IJukeboxService.hpp"
+
+namespace lms::jukebox
+{
+    class JukeboxService : public IJukeboxService
+    {
+    public:
+        JukeboxService(db::IDb& db, audio::AudioOutputBackend backend);
+        ~JukeboxService() override;
+
+        JukeboxService(const JukeboxService&) = delete;
+        JukeboxService& operator=(const JukeboxService&) = delete;
+
+    private:
+        void play(std::size_t trackIndex, std::chrono::microseconds offset) override;
+
+        void pause() override;
+        void resume() override;
+        bool isPaused() const override;
+
+        std::optional<std::size_t> getCurrentTrackIndex() const override;
+        std::chrono::microseconds getPlaybackTrackTime() const override;
+
+        // Play queue control
+        void clearTracks() override;
+        void removeTrack(std::size_t index) override;
+        void appendTracks(std::span<const db::TrackId> tracks) override;
+        void shuffleTracks() override;
+        std::vector<db::TrackId> getTracks() const override;
+
+        void onContextReady();
+        void onStreamReady();
+
+        bool createDecoder(std::size_t trackIndex, std::chrono::microseconds offset = {});
+        void deleteDecoder();
+        void startDecoder();
+        void onDecodeFinished(bool aborted);
+
+        // TODO: make configurable or use detected output params
+        static inline constexpr audio::PcmParameters _pcmParams{
+            .channelCount = 2,
+            .sampleRate = 44100,
+            .sampleType = audio::PcmSampleType::Signed16,
+            .byteOrder = std::endian::little,
+            .planar = false,
+        };
+
+        mutable std::shared_mutex _mutex;
+
+        std::vector<db::TrackId> _tracks;              // protected by mutex
+        std::optional<std::size_t> _currentTrackIndex; // protected by mutex
+        std::chrono::microseconds _currentTrackPlaybackTimeOffset{};
+        std::chrono::microseconds _currentTrackStartTimeOffset{};
+
+        boost::asio::io_context _ioContext;
+        core::IOContextRunner _ioContextRunner;
+        db::IDb& _db;
+        std::unique_ptr<audio::IAudioOutputContext> _outputContext;
+        std::unique_ptr<audio::IAudioOutputStream> _outputStream;
+
+        std::shared_ptr<audio::utils::IPcmDecodeStreamer> _decoder;
+    };
+} // namespace lms::jukebox