Emma ThorpeandClaude Opus 5
c63115f246
Build and publish container / build (pull_request) Successful in 7m41s
Rockbox applies the offset a ReplayGain tag carries but has no loudness analysis of its own, so an untagged mirror plays every album at whatever level it was mastered to. Albums are measured with rsgain once their tracks are in place, album gain and track gain both, leaving the device to choose between them. An album is re-measured as a whole whenever it gains, loses or replaces a track, because album gain is a property of all of its tracks and one new track makes the value stored on every sibling wrong. rsgain runs with --preserve-mtimes. Staleness here is an mtime comparison and tagging rewrites the file, so without it every levelled track would look newer than its source and the next pass would re-encode the whole library. Whether a file has already been levelled is decided by walking its ID3v2 frame headers and seeking over the bodies. Cover art is embedded in every mirror file, so reading the tag whole would turn an idle pass into a full read of the library. A missing rsgain is reported and then left alone rather than failing the pass: the mirror is still correct audio in the right place. Two existing tests move with the change. ffprobe's csv writer renders the ReplayGain side data as a trailing empty field, and a copied MP3 now differs from its source in the container while carrying identical audio. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
23 lines
613 B
TOML
23 lines
613 B
TOML
[build-system]
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requires = ["setuptools>=77"]
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build-backend = "setuptools.build_meta"
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[project]
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name = "music-mirror"
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version = "0.4.0"
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description = "Maintain a lossy MP3 mirror of a lossless music library"
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readme = "README.md"
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requires-python = ">=3.11"
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# No runtime Python dependencies: the work is done by ffmpeg and rsgain, which
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# must be on PATH. A missing rsgain costs the ReplayGain tags and nothing else.
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dependencies = []
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[project.scripts]
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music-mirror = "music_mirror:run"
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[project.urls]
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Homepage = "https://code.emmathe.dev/lyrathorpe/music-mirror"
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[tool.setuptools]
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py-modules = ["music_mirror"]
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