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Add librosa beat/mood analysis and an Ambience background driven by it

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The background worker now runs a real librosa analyzer (tempo, beat grid,
per-second energy/valence curves) instead of only the null baseline, kept
behind build_analyzer() so a plain checkout without the analysis extra still
runs fine. The web player reads that per-track analysis and drives a new
animated "Ambience" background (bubbles, colour, current) that reacts to the
beat and the mood curve as the track plays, plus a debug overlay for tuning
it. Also adds a one-off script to backfill podcast cover art from iTunes.
This commit is contained in:
Martin Bauer
2026-09-10 22:42:51 +02:00
parent 8aed3b022b
commit 2e0e6ad199
24 changed files with 2789 additions and 60 deletions
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8
python-backend/pyproject.toml
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@@ -24,6 +24,10 @@ dependencies = [
[project.optional-dependencies]
dev = ["mypy>=1.10", "pytest-asyncio>=0.23", "pytest>=8.0", "ruff>=0.5"]
# Off by default: the reactive background is nice, not required, and librosa/numpy are
# a real install cost on a Pi. Missing this group means `build_analyzer()` falls back
# to `NullAnalyzer` and the background stays at its static baseline - never a crash.
analysis = ["librosa>=1.0", "numpy>=2.0"]
[project.scripts]
musicmouse = "musicmouse.__main__:main"
@@ -62,5 +66,7 @@ files = ["musicmouse"]
warn_unreachable = true
[[tool.mypy.overrides]]
module = ["vlc", "serial_asyncio", "ruamel.*"]
# numpy ships its own types, but only when the `analysis` extra is installed - a plain
# checkout must still type-check clean, so it needs the same treatment as librosa.
module = ["vlc", "serial_asyncio", "ruamel.*", "librosa.*", "numpy"]
ignore_missing_imports = true