jensandClaude Sonnet 5
301503a276
VNC/noVNC only ever streams video, so game sound needed a completely separate path. Adds pulseaudio/pulseaudio-utils/libasound2-plugins and routes ALSA's default device through Pulse (/etc/asound.conf), so dosbox/scummvm need zero special config. server.sh starts one PulseAudio daemon and one pcm_ws_bridge.py (from docker-common) for the container's whole lifetime, capturing Pulse's single default sink via parec. Audio is a single shared mix, not per-game - considered and dropped a per-slot-isolated design (mirroring the video architecture) as unnecessary complexity per direction. Every running game's audio just mixes into the one default sink; every /screen/<name> page connects to the same AUDIO_PORT. setup_server.py gains GET /screen/<name> (an iframe onto the game's noVNC screen plus an Enable Sound button - browsers require a user gesture before audio can start) and GET /pcm-worklet.js. The "Open Screen" link simplifies from a client-side-JS-built cross-port link to a plain same-origin relative link, since /screen/<name> now reads the real host server-side from the request's own Host header. Found and fixed a real bug along the way: parec --device=@DEFAULT_SINK@.monitor looks correct but fails with "Stream error: Invalid argument" - the actual PulseAudio macro is the single token @DEFAULT_MONITOR@. Verified end-to-end with real audio, not just plumbing: confirmed via `pactl list sink-inputs` that dosbox connects to Pulse correctly (unmuted, uncorked), then used xdotool to advance stuntcar past its silent title screen and captured real audible game audio (RMS ~9292) through the WebSocket bridge with a raw Python client. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NiNnj78HGx1KWyCCo39HSz
42 lines
1.6 KiB
Docker
42 lines
1.6 KiB
Docker
# syntax=docker/dockerfile:1
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FROM ich777/novnc-baseimage
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ENV DISPLAY_NUM=99
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ENV GAMES_HOME=/opt/games
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ENV SCRIPTS_HOME=/opt/scripts
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ENV PATH=${PATH}:${SCRIPTS_HOME}
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# unzip/smbclient/python3 are needed at runtime: the games are no longer baked into the
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# image, setup_server.py serves an HTML install UI (backed by smbget+unzip) that the user
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# drives on ${SETUP_PORT} instead of anything being auto-downloaded at container start.
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# pulseaudio/pulseaudio-utils/libasound2-plugins carry game audio out to the browser (see
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# scripts/pcm_ws_bridge.py) - VNC/noVNC only ever streams video, never audio.
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RUN apt-get update && \
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apt-get -y install --no-install-recommends dosbox scummvm alsa-utils unzip smbclient python3 \
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pulseaudio pulseaudio-utils libasound2-plugins && \
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rm -rf /var/lib/apt/lists/*
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# Route ALSA's default device through PulseAudio, so dosbox/scummvm need no special config -
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# every game's audio ends up mixed into Pulse's one default sink, captured by pcm_ws_bridge.py.
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RUN printf 'pcm.!default pulse\nctl.!default pulse\n' > /etc/asound.conf
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RUN openssl req -x509 -nodes -newkey rsa:2048 -keyout /tmp/novnc.key -out /tmp/novnc.pem -days 3650 -subj "/C=US/ST=NY/L=NY/O=NY/OU=NY/CN=NY emailAddress=email@example.com"
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RUN touch /root/.Xauthority
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RUN mkdir -p ${GAMES_HOME}
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VOLUME ${GAMES_HOME}
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ADD scripts ${SCRIPTS_HOME}
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WORKDIR /
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EXPOSE 60${DISPLAY_NUM}
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EXPOSE 70${DISPLAY_NUM}
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EXPOSE 71${DISPLAY_NUM}
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EXPOSE 8090-8099
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EXPOSE 5900
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ENTRYPOINT ["/opt/scripts/server_start.sh", "/opt/scripts/server.sh"]
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# see also
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# https://github.com/ich777/docker-krusader
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