# Node Identity
NODE_ID=node-001
NODE_NAME="My Radio Node"
NODE_LAT=0.0
NODE_LON=0.0

# MQTT — point to your C2 server
MQTT_BROKER=localhost
MQTT_PORT=1883
# Must match MQTT_NODE_USER/MQTT_NODE_PASS in the server's top-level .env
MQTT_USER=drb-node
MQTT_PASS=change-me-node

# C2 server for audio upload (leave blank to disable upload)
C2_URL=http://localhost:8888
# API key is provisioned automatically via MQTT after admin approves the node

# Icecast (local container — usually no need to change)
# Live listening only. Call recording and Discord voice use PulseAudio instead.
ICECAST_SOURCE_PASSWORD=hackme
ICECAST_ADMIN_PASSWORD=admin
ICECAST_HOST=localhost
ICECAST_PORT=8000
ICECAST_MOUNT=/radio

# PulseAudio capture (usually no need to change)
# Monitor of the drb_sink null sink that Liquidsoap writes into.
PULSE_SOURCE=drb_sink.monitor
# Seconds to wait for the shared PulseAudio socket before giving up and retrying.
PULSE_WAIT_TIMEOUT=30

# --- Call segmentation -------------------------------------------------------
# Recording boundaries come from the AUDIO, not the control channel: a recording
# starts at voice onset and ends after this many seconds of silence actually
# heard in the stream. Transmissions on the same talkgroup separated by less
# than this stay in ONE recording, so back-and-forth traffic is one file.
# Tune from the "measured trailing silence" line logged on every close.
CALL_SILENCE_TIMEOUT=3.0

# dBFS (RMS over one ~46ms chunk) below which audio counts as silence and the
# recording is allowed to close.
#
# This does NOT need calibrating against your radio's noise floor. Between
# transmissions the capture is the monitor of a PulseAudio *null sink*, which
# emits DIGITAL silence: measured on a live node it sits at about -91 dBFS —
# one least-significant bit of a 16-bit sample — while speech averages about
# -18 dBFS. Anything from roughly -70 to -40 behaves identically. Only change
# this if you have replaced the audio path with something that has a real
# analog noise floor.
CALL_SILENCE_THRESHOLD_DB=-50

# DEPRECATED as a primary control. Used ONLY when PulseAudio capture is not
# producing audio, where the old control-channel state machine takes over so
# the node still reports radio activity (with no recordings) while its audio
# path is broken.
CALL_IDLE_TIMEOUT=3

# Seconds of audio kept past a CONTROL-CHANNEL-derived boundary — a talkgroup
# change, or a close in the fallback mode above. Buffered audio lags the
# control channel by ~1.5s (grant-to-speech offset measured 0.84-1.62s), so
# cutting at the exact control-channel timestamp clipped the last words of the
# outgoing call. Does NOT apply to the normal end of a call any more; that
# boundary comes from the audio and needs no pad. Safe to be generous — the
# extra is trimmed off again before upload.
CALL_TAIL_PAD_SECONDS=3.0

# Strip leading/trailing dead air before upload. Recordings deliberately
# over-capture at both ends, and silence costs Whisper spend and makes it
# hallucinate text that was never spoken. Trimming is a sample-offset slice of
# the buffered PCM (no re-encode) and only ever touches the head and tail, with
# a guard margin so no syllable is clipped. Set to false to upload raw audio.
TRIM_SILENCE=true
# dBFS (RMS) below which audio counts as silence when trimming the ends. Kept
# stricter than CALL_SILENCE_THRESHOLD_DB on purpose.
TRIM_SILENCE_THRESHOLD_DB=-40
# Seconds of audio kept either side of detected speech.
TRIM_SILENCE_GUARD_SECONDS=0.25

# OP25 container (usually no need to change)
OP25_API_URL=http://localhost:8001
OP25_TERMINAL_URL=http://localhost:8081

# Container registry — set these to pull pre-built images instead of building locally.
# Must match the DOCKER_ORG variable and repo name configured in Gitea.
# Leave blank to always build locally.
IMAGE_REGISTRY=git.vpn.cusano.net
DOCKER_ORG=
DOCKER_REPO=