view data/osc/sv-command @ 1196:c7b9c902642f spectrogram-minor-refactor

Fix threshold in spectrogram -- it wasn't working in the last release.
There is a new protocol for this. Formerly the threshold parameter had a
range from -50dB to 0 with the default at -50, and -50 treated internally
as "no threshold". However, there was a hardcoded, hidden internal threshold
for spectrogram colour mapping at -80dB with anything below this being rounded
to zero. Now the threshold parameter has range -81 to -1 with the default
at -80, -81 is treated internally as "no threshold", and there is no hidden
internal threshold. So the default behaviour is the same as before, an
effective -80dB threshold, but it is now possible to change this in both
directions. Sessions reloaded from prior versions may look slightly different
because, if the session says there should be no threshold, there will now
actually be no threshold instead of having the hidden internal one.

Still need to do something in the UI to make it apparent that the -81dB
setting removes the threshold entirely. This is at least no worse than the
previous, also obscured, magic -50dB setting.

#!/bin/sh
#
# A very simple command shell for Sonic Visualiser.
# 
# This provides a wrapper for the sv-osc-send program, which is a
# generic OSC sending program (not specific to SV, despite its name).
# This script attempts to guess the OSC port number for an SV
# process running on the local host, and then composes a method name
# and arguments into a complete OSC call.
# 
# You can either run this with the method and its arguments on the
# command line, e.g. "sv-command set layer Frequency-Scale Log", or
# you can provide a series of method + argument commands on stdin.
# 
# Unless you use the -q option, this script will echo the OSC URL
# and arguments that it is sending for each command.
#
# Note that the method and arguments may not contain spaces.
# 
# Chris Cannam, Nov 2006

quiet=
if [ "$1" = "-q" ]; then
    quiet=true; shift;
fi

# The yucky bit

port=`lsof -c sonic- | \
          grep UDP | \
          sed -e 's/^.*[^0-9]\([0-9][0-9]*\) *$/\1/' | \
          grep -v ' ' | \
          head -1 `

host=127.0.0.1
scheme=osc.udp

if [ -z "$port" ]; then
    echo "Sonic Visualiser OSC port not found"
    exit 1
fi

if [ -n "$1" ]; then
    command=$1; shift
    [ -z "$quiet" ] && echo "$scheme://$host:$port/$command" "$@"
    sv-osc-send "$scheme://$host:$port/$command" "$@"
else
    while read command a1 a2 a3 a4 a5; do
        [ -z "$command" ] && continue
	[ -z "$quiet" ] && echo "$scheme://$host:$port/$command" $a1 $a2 $a3 $a4 $a5
	sv-osc-send "$scheme://$host:$port/$command" $a1 $a2 $a3 $a4 $a5
    done
fi

exit 0