jamulus/distributions/raspijamulus.sh

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#!/bin/bash
# This script is intended to setup a clean Raspberry Pi system for running Jamulus
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OPUS="opus-1.3.1"
NCORES=$(nproc)
# install required packages
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pkgs='alsamixergui build-essential qt5-default libasound2-dev cmake libglib2.0-dev'
if ! dpkg -s $pkgs >/dev/null 2>&1; then
read -p "Do you want to install missing packages? " -n 1 -r
echo
if [[ $REPLY =~ ^[Yy]$ ]]; then
sudo apt-get install $pkgs -y
fi
fi
# Opus audio codec, custom compilation with custom modes and fixed point support
if [ -d "${OPUS}" ]; then
echo "The Opus directory is present, we assume it is compiled and ready to use. If not, delete the opus directory and call this script again."
else
wget https://archive.mozilla.org/pub/opus/${OPUS}.tar.gz
tar -xzf ${OPUS}.tar.gz
rm ${OPUS}.tar.gz
cd ${OPUS}
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if [ ${OPUS} == "opus-1.3.1" ]; then
echo "@@ -117,13 +117,19 @@ void validate_celt_decoder(CELTDecoder *st)
#ifndef CUSTOM_MODES
celt_assert(st->mode == opus_custom_mode_create(48000, 960, NULL));
celt_assert(st->overlap == 120);
+ celt_assert(st->end <= 21);
+#else
+/* From Section 4.3 in the spec: The normal CELT layer uses 21 of those bands,
+ though Opus Custom (see Section 6.2) may use a different number of bands
+
+ Check if it's within the maximum number of Bark frequency bands instead */
+ celt_assert(st->end <= 25);
#endif
celt_assert(st->channels == 1 || st->channels == 2);
celt_assert(st->stream_channels == 1 || st->stream_channels == 2);
celt_assert(st->downsample > 0);
celt_assert(st->start == 0 || st->start == 17);
celt_assert(st->start < st->end);
- celt_assert(st->end <= 21);
#ifdef OPUS_ARCHMASK
celt_assert(st->arch >= 0);
celt_assert(st->arch <= OPUS_ARCHMASK);" >> opus_patch_file.diff
patch celt/celt_decoder.c opus_patch_file.diff
fi
./configure --enable-custom-modes --enable-fixed-point
make -j${NCORES}
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mkdir include/opus
cp include/*.h include/opus
cd ..
fi
# Jack audio without DBUS support
if [ -d "jack2" ]; then
echo "The Jack2 directory is present, we assume it is compiled and ready to use. If not, delete the jack2 directory and call this script again."
else
git clone https://github.com/jackaudio/jack2.git
cd jack2
git checkout v1.9.12
./waf configure --alsa --prefix=/usr/local --libdir=$(pwd)/build
./waf -j${NCORES}
mkdir build/jack
cp build/*.so build/jack
cp build/common/*.so build/jack
cp build/example-clients/*.so build/jack
cd ..
# give audio group rights to do realtime
if grep -Fq "@audio" /etc/security/limits.conf; then
echo "audio group already has realtime rights"
else
sudo sh -c 'echo "@audio - rtprio 95" >> /etc/security/limits.conf'
sudo sh -c 'echo "@audio - memlock unlimited" >> /etc/security/limits.conf'
fi
fi
# compile Jamulus with external Opus library
cd ..
qmake "CONFIG+=opus_shared_lib raspijamulus headless" "INCLUDEPATH+=distributions/${OPUS}/include" "QMAKE_LIBDIR+=distributions/${OPUS}/.libs" "INCLUDEPATH+=distributions/jack2/common" "QMAKE_LIBDIR+=distributions/jack2/build/common" Jamulus.pro
make -j${NCORES}
# get first USB audio sound card device
ADEVICE=$(aplay -l|grep "USB Audio"|tail -1|cut -d' ' -f3)
echo "Using USB audio device: ${ADEVICE}"
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# write Jamulus ini file for setting the client name and buffer settings, if there is
# just one CPU core, we assume that we are running on a Raspberry Pi Zero
JAMULUSINIFILE="Jamulus.ini"
NAME64=$(echo "Raspi $(hostname)"|cut -c -16|tr -d $'\n'|base64)
if [ "$NCORES" -gt "1" ]; then
echo -e "<client>\n <name_base64>${NAME64}</name_base64>" > ${JAMULUSINIFILE}
echo -e " <autojitbuf>1</autojitbuf>\n <jitbuf>3</jitbuf>\n <jitbufserver>3</jitbufserver>" >> ${JAMULUSINIFILE}
echo -e " <audiochannels>2</audiochannels>\n <audioquality>1</audioquality>\n</client>" >> ${JAMULUSINIFILE}
else
echo -e "<client>\n <name_base64>${NAME64}</name_base64>" > ${JAMULUSINIFILE}
echo -e " <autojitbuf>1</autojitbuf>\n <jitbuf>3</jitbuf>\n <jitbufserver>3</jitbufserver>" >> ${JAMULUSINIFILE}
echo -e " <audiochannels>0</audiochannels>\n <audioquality>1</audioquality>\n</client>" >> ${JAMULUSINIFILE}
fi
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# taken from "Raspberry Pi and realtime, low-latency audio" homepage at wiki.linuxaudio.org
#sudo service triggerhappy stop
#sudo service dbus stop
#sudo mount -o remount,size=128M /dev/shm
# start Jack2 and Jamulus in headless mode
export LD_LIBRARY_PATH="distributions/${OPUS}/.libs:distributions/jack2/build:distributions/jack2/build/common"
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distributions/jack2/build/jackd -R -T --silent -P70 -p16 -t2000 -d alsa -dhw:${ADEVICE} -p 128 -n 3 -r 48000 -s &
./Jamulus -n -i ${JAMULUSINIFILE} -c jamulus.fischvolk.de &
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echo "###---------- PRESS ANY KEY TO TERMINATE THE JAMULUS SESSION ---------###"
read -n 1 -s -r -p ""
killall Jamulus