rays
63e192767d
For anyone who turns DeadAir on, a background task makes each episode a
copy with every silence quieter than -38 dB for over 0.35 s shortened to
0.2 s. Nothing is re-encoded: ffmpeg copies the original's frames and
leaves the silent ones out, about 11 s for an hour of MP3 in a release
build. On Brad & Will's episode 359 that is 520 cuts and 3.3 minutes
saved, the copy decodes clean, and it has no isolated spikes in its
silences that the original lacks.
Cuts are made from the middle of each silence, keeping 0.1 s at each
end, so the frames either side of a cut are silent: decoding blends a
frame with the one before it, and an MP3 frame can begin in the bytes of
the frame before, so the first frame after a cut decodes against the
wrong neighbour. Inside a silence nobody hears that; at a word they would.
Positions stay in the original's time and the server converts them both
ways. The iOS and Android apps save positions themselves from their own
player, even while the page is asleep, so converting in the page would
have stored the copy's times as the original's. /media/{id}/deadair
serves the copy at its own address and records that this person is
playing it; a position saved meanwhile is converted from the copy's
clock, as is the length a player measures.
The copy is made by a task of its own, not the worker: a first pass over
a library is hours of ffmpeg, and scans must not wait behind it. It
checks every two minutes, which covers new downloads, files already
downloaded, a switch turned on and a file downloaded again with one rule.
Episodes everyone who would hear the copy has finished get none.
download::remove deletes a copy with its original, and the quota counts
copies.
Settings: the switch is PATCH /api/me {deadair}, a feed kept out is
PATCH /api/feeds/{id} {deadair: false}. GET /api/me gives the switch and
deadair_saved, the seconds saved on episodes heard 75% or more on a copy,
each counted once. Three new tables, so no ALTER.
The image gains Debian's ffmpeg, about 480 MB, in a layer that stays
cached until the base image changes. The player's switch, the feed
setting and the stat come next, after mockups.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
48 lines
1.8 KiB
Docker
48 lines
1.8 KiB
Docker
# Build. rusqlite is bundled (compiles SQLite from source) and librqbit needs a C
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# toolchain, so the builder needs cc. TLS is rustls throughout, so no OpenSSL headers.
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# build.rs builds the web pages from TypeScript with swc, which needs node.
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FROM rust:1-slim-bookworm AS build
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RUN apt-get update && apt-get install -y --no-install-recommends \
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build-essential nodejs npm \
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&& rm -rf /var/lib/apt/lists/*
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WORKDIR /src
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# swc only: Playwright and TypeScript are for testing and type-checking, not for building.
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COPY package.json package-lock.json ./
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RUN npm ci --omit=dev
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# Dependencies first, so editing the source does not rebuild librqbit every time.
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COPY Cargo.toml Cargo.lock ./
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RUN mkdir src && echo 'fn main(){}' > src/main.rs \
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&& cargo build --release --locked \
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&& rm -rf src
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COPY build.rs ./
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COPY src ./src
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COPY web ./web
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# cargo skips a rebuild if mtimes look untouched; make sure it does not.
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RUN touch src/main.rs && cargo build --release --locked
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FROM debian:bookworm-slim
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# ffmpeg is DeadAir's (#171): it finds the silences and copies the frames kept. Debian's adds
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# about 480 MB, once: the layer stays cached until the base image changes.
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RUN apt-get update && apt-get install -y --no-install-recommends \
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ca-certificates gosu ffmpeg \
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&& rm -rf /var/lib/apt/lists/*
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COPY --from=build /src/target/release/ipx /usr/local/bin/ipx
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COPY docker-entrypoint.sh /usr/local/bin/
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RUN chmod +x /usr/local/bin/docker-entrypoint.sh
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ENV IPX_CONFIG=/config/config.toml \
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IPX_DATA_DIR=/data \
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IPX_LOG=ipx=info \
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PUID=99 \
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PGID=100
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VOLUME ["/config", "/data", "/downloads"]
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# Web UI, and the BitTorrent peer port (TCP and UDP -- DHT needs the UDP side).
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EXPOSE 8099/tcp 6881/tcp 6881/udp
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ENTRYPOINT ["docker-entrypoint.sh"]
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CMD ["ipx", "daemon"]
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