4 Commits

Author	SHA1	Message	Date
Claude	92cc09e908	feat(02-03): add librosa beat detection module (lightsync/audio/beats.py) ... - analyze(path) -> {tempo: float, beats: [float, ...]} using librosa.beat.beat_track - Returns beat timestamps in seconds converted from librosa frame indices - analyze_async() wraps in asyncio.to_thread for non-blocking use from FastAPI - Supports MP3/WAV/FLAC/OGG via librosa's ffmpeg/soundfile fallback chain	2026-04-06 15:35:58 +00:00
Claude	9239988d38	fix(02): Alpine libmpv/libsndfile symlinks, upload endpoint, browser file picker ... - Dockerfile: add libmpv.so + libsndfile.so symlinks (Alpine/musl has no ldconfig) - engine.py: monkey-patch ctypes.util.find_library as fallback for Alpine - audio.py: add /upload (multipart) and /files endpoints - pyproject.toml: add python-multipart - frontend: replace path input with upload button + file selector dropdown	2026-04-06 15:34:11 +00:00
Claude	da474d978d	feat(02-03): add waveform extraction module and HTTP endpoint ... - Create lightsync/audio/waveform.py with extract_peaks() (AUD-05) - MP3 via ffmpeg pipe, WAV/FLAC/OGG via soundfile+numpy - Add GET /api/audio/waveform endpoint with asyncio.to_thread - peaks param clamped 100-5000, returns {peaks, count, file}	2026-04-06 13:11:38 +00:00
Claude	5f75a19868	feat(02-01): implement MPVEngine with position polling and lifespan integration ... - Create lightsync/audio/__init__.py package marker - Create lightsync/audio/engine.py with MPVEngine class - Headless mpv wrapper (vo=null, ao from MPV_AO env var default null) - 10Hz polling loop in daemon thread (time.sleep(0.1), not observe_property) - Thread-safe get_state() returning position, paused, duration, loaded, file - load/play/pause/seek/stop methods (AUD-01, AUD-03) - apply_timer_fix() with sys.platform == win32 guard (INF-03) - Update main.py lifespan to create/start/stop MPVEngine - MPV_AO env var controls audio output (default null for server mode) - engine exposed via app.state.engine for API routes	2026-04-06 13:03:43 +00:00