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#!/bin/bash
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# Set RTC wakeup for next VDR timer event
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shopt -s extglob
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# Check timestamp set by shutdown script.
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nexttimer=$( cat /var/run/vdr/next-timer 2>/dev/null )
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rm -f /var/run/vdr/next-timer
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if [[ $nexttimer != +([0-9]) ]] ; then
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# Next timer timestamp not set by shutdown script or bogus,
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# try to get it via SVDRP.
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nexttimer=$( svdrpsend NEXT abs 2>/dev/null | \
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sed -rne 's/^250[[:space:]]+[0-9]+[[:space:]]+([0-9]+).*/\1/p' )
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fi
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# TODO: nexttimer may be in the past if there's an ongoing recording
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# (see svdrpsend HELP NEXT). In that case we should set *something* or
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# the box won't autowakeup at all
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if [[ $nexttimer && $nexttimer -gt $( date +%s ) ]] ; then
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[[ -f /etc/sysconfig/vdr ]] && . /etc/sysconfig/vdr
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when=$(( $nexttimer - ${WAKEUP_BEFORE_RECORDING:-10} * 60 ))
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hrwhen=$( date -d "1970-01-01 $when sec UTC" )
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echo "Setting wakeup time for next recording: $hrwhen"
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/usr/sbin/rtcwake -m no -t $when >/dev/null
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fi
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