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61 lines
2.2 KiB
Bash
61 lines
2.2 KiB
Bash
#!/bin/sh
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# shell script wrapper for SBo games/opendune
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# written by B. Watson, licensed under the WTFPL.
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# this wrapper is needed because the game uses timidity in alsa client
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# mode for MIDI audio, but doesn't start timidity itself (it just tells
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# you to). so this script starts it, if necessary (and if possible). if
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# timidity isn't installed, we don't complain about it, just run the
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# game without it (the game will complain so this script doesn't have to).
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# if timidity or some other alsa client is running (if there are writable
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# MIDI ports other than 'MIDI Through'), we won't start anything.
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# when the game is through running, we have to kill off timidity if we
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# started it (not if it was already running). unfortunately timidity's
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# daemon mode doesn't write a PID file, and it forks so we can't easily
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# get the PID, so we can't use daemon mode.
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# the code in src/audio/midi_alsa.c of the game will actually connect
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# to the first writable, subscribable port it can find, other than
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# "Midi Through". so if the user's already running some MIDI daemon
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# like FluidSynth, the game will use it, and we shouldn't be starting
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# timidity here.
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# KNOWN ISSUE: if lashd is running, it sometimes creates a MIDI port that
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# doesn't appear in aconnect's list, but opendune will see & connect to
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# it. Result is that you get no complaint about timidity not running,
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# but don't hear any audio either.
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if [ "$( aconnect -o | grep -v 'Midi Through' )" = "" ]; then
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if which timidity &> /dev/null; then
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timidity -iAq &
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kidpid="$!"
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# it might take timidity a while to start up & register its MIDI port.
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# we wait up to 10 sec for it to start.
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for i in 0 1 2 3 4; do
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sleep $i
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if [ "$( aconnect -o | grep TiMidity )" != "" ]; then
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break
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fi
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done
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fi
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fi
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# run the game, wait for it to exit. its status will be the
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# return value of this script.
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/usr/libexec/opendune/opendune "$@"
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retval="$?"
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# kill timidity, if we started it. PIDs can get reused, we don't
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# want to kill some random process if timidity already exited and
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# its PID got reused, so check & make sure it really is timidity.
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if [ "$kidpid" != "" ]; then
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if [ "$( ps h -o comm $kidpid )" = "timidity" ]; then
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kill "$kidpid"
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fi
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fi
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exit $retval
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