#!/bin/sh
# $Id: x42-plugins.SlackBuild,v 1.1 2020/08/04 10:09:17 root Exp root $
# Copyright 2020  Eric Hameleers, Eindhoven, NL
# All rights reserved.
#
#   Permission to use, copy, modify, and distribute this software for
#   any purpose with or without fee is hereby granted, provided that
#   the above copyright notice and this permission notice appear in all
#   copies.
#
#   THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
#   WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#   MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
#   IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
#   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
#   USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
#   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
#   OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
#   OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
#   SUCH DAMAGE.
# -----------------------------------------------------------------------------
#
# Slackware SlackBuild script 
# ===========================
# By:          Eric Hameleers <alien@slackware.com>
# For:         x42-plugins
# Descr:       collection of lv2 plugins
# URL:         http://x42-plugins.com/x42/
# Build needs: 
# Needs:       jack2, liblo, libltc, lv2, zita-convolver
# Changelog:   
# 20200714-1:  03/Aug/2020 by Eric Hameleers <alien@slackware.com>
#              * Initial build.
# 
# Run 'sh x42-plugins.SlackBuild' to build a Slackware package.
# The package (.t?z) and .txt file as well as build logs are created in /tmp .
# Install the package using 'installpkg' or 'upgradepkg --install-new'.
#
# -----------------------------------------------------------------------------

PRGNAM=x42-plugins
VERSION=${VERSION:-20200714}
BUILD=${BUILD:-1}
TAG=${TAG:-alien}

DOCS="plugin.news plugin.versions"

# Where do we look for sources?
SRCDIR=$(cd $(dirname $0); pwd)

# Place to build (TMP) package (PKG) and output (OUTPUT) the program:
TMP=${TMP:-/tmp/build}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

SOURCE[0]="$SRCDIR/${PRGNAM}-${VERSION}.tar.xz"
SRCURL[0]="http://gareus.org/misc/${PRGNAM}/${PRGNAM}-${VERSION}.tar.xz"

SOURCE[1]="$SRCDIR/${PRGNAM}.png"
SRCURL[1]="https://x42-plugins.com/x42/static/img/x42.png"

##
## --- with a little luck, you won't have to edit below this point --- ##
##

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$(uname -m)" in
    i?86) ARCH=i586 ;;
    arm*) readelf /usr/bin/file -A | egrep -q "Tag_CPU.*[4,5]" && ARCH=arm || ARCH=armv7hl ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
    *) ARCH=$(uname -m) ;;
  esac
  export ARCH
fi
# Set CFLAGS/CXXFLAGS and LIBDIRSUFFIX:
case "$ARCH" in
  i?86)      SLKCFLAGS="-O2 -march=${ARCH} -mtune=i686"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  x86_64)    SLKCFLAGS="-O2 -fPIC"
             SLKLDFLAGS="-L/usr/lib64"; LIBDIRSUFFIX="64"
             ;;
  armv7hl)   SLKCFLAGS="-O2 -march=armv7-a -mfpu=vfpv3-d16"
             SLKLDFLAGS=""; LIBDIRSUFFIX=""
             ;;
  *)         SLKCFLAGS=${SLKCFLAGS:-"-O2"}
             SLKLDFLAGS=${SLKLDFLAGS:-""}; LIBDIRSUFFIX=${LIBDIRSUFFIX:-""}
             ;;
esac

case "$ARCH" in
    arm*)    TARGET=$ARCH-slackware-linux-gnueabi ;;
    *)       TARGET=$ARCH-slackware-linux ;;
esac

# Exit the script on errors:
set -e
trap 'echo "$0 FAILED at line ${LINENO}" | tee $OUTPUT/error-${PRGNAM}.log' ERR
# Catch unitialized variables:
set -u
P1=${1:-1}

# Save old umask and set to 0022:
_UMASK_=$(umask)
umask 0022

# Create working directories:
mkdir -p $OUTPUT          # place for the package to be saved
mkdir -p $TMP/tmp-$PRGNAM # location to build the source
mkdir -p $PKG             # place for the package to be built
rm -rf $PKG/*             # always erase old package's contents
rm -rf $TMP/tmp-$PRGNAM/* # remove the remnants of previous build
rm -rf $OUTPUT/{checkout,configure,make,install,error,makepkg,patch}-$PRGNAM.log
                          # remove old log files

# Source file availability:
for (( i = 0; i < ${#SOURCE[*]}; i++ )) ; do
  if ! [ -f ${SOURCE[$i]} ]; then
    echo "Source '$(basename ${SOURCE[$i]})' not available yet..."
    # Check if the $SRCDIR is writable at all - if not, download to $OUTPUT
    [ -w "$SRCDIR" ] || SOURCE[$i]="$OUTPUT/$(basename ${SOURCE[$i]})"
    if [ -f ${SOURCE[$i]} ]; then echo "Ah, found it!"; continue; fi
    if ! [ "x${SRCURL[$i]}" == "x" ]; then
      echo "Will download file to $(dirname $SOURCE[$i])"
      wget --no-check-certificate -nv -T 20 -O "${SOURCE[$i]}" "${SRCURL[$i]}" || true
      if [ $? -ne 0 -o ! -s "${SOURCE[$i]}" ]; then
        echo "Fail to download '$(basename ${SOURCE[$i]})'. Aborting the build."
        mv -f "${SOURCE[$i]}" "${SOURCE[$i]}".FAIL
        exit 1
      fi
    else
      echo "File '$(basename ${SOURCE[$i]})' not available. Aborting the build."
      exit 1
    fi
  fi
done

if [ "$P1" == "--download" ]; then
  echo "Download complete."
  exit 0
fi

# --- PACKAGE BUILDING ---

echo "++"
echo "|| $PRGNAM-$VERSION"
echo "++"

cd $TMP/tmp-$PRGNAM
echo "Extracting the source archive(s) for $PRGNAM..."
tar -xvf ${SOURCE}
cd ${PRGNAM}-${VERSION}
chown -R root:root .
chmod -R u+w,go+r-w,a+rX-st .

# Which plugins are part of the collection?
PLUGIN_LIST="$(cat plugin.versions |cut -d' ' -f1)"

# Slackware does not ship  ttf-freefont so we use DejaVu Sans instead:
export FONTFILE="/usr/share/fonts/TTF/DejaVuSans-Bold.ttf"

echo Building ...
export LDFLAGS="$SLKLDFLAGS"
export CXXFLAGS="$SLKCFLAGS"
export CFLAGS="$SLKCFLAGS"
make $NUMJOBS OPTIMIZATIONS="-DNDEBUG" 2>&1 | tee $OUTPUT/make-${PRGNAM}.log
make PREFIX=/usr MANDIR=/usr/man/man1 LV2DIR=/usr/lib${LIBDIRSUFFIX}/lv2 \
  DESTDIR=$PKG install 2>&1 | tee $OUTPUT/install-${PRGNAM}.log

# Some of the plugins also install a standalone JACK binary,
# so let's give them real menu entries,
# with many thanks to Arch Linux for the descriptive texts:
mkdir -p $PKG/usr/share/applications
mkdir -p $PKG/usr/share/icons/hicolor/256x256/apps

# First the parameter-less binaries:
create_desktopfile() {
cat <<EOT
[Desktop Entry]
Version=1.0
Name=x42-$1
GenericName=$2
Comment=$3
TryExec=$4
Exec=$4
Icon=$5
Type=Application
Terminal=false
Categories=X-X42-Plugins;
EOT
}

# darc:
create_desktopfile \
  "darc" \
  "Dynamic Audio Range Compressor" \
  "General purpose audio signal compressor" \
  "x42-darc" \
  "x42-darc" \
  > $PKG/usr/share/applications/x42-darc.desktop
install -Dm 644 darc.lv2/img/x42-darc.png \
  -t $PKG/usr/share/icons/hicolor/256x256/apps/

# dpl:
create_desktopfile \
  "dpl" \
  "Peak Limiter" \
  "Look-ahead digital peak limiter suited for your final mix" \
  "x42-dpl" \
  "x42-dpl" \
  > $PKG/usr/share/applications/x42-dpl.desktop
install -Dm 644 dpl.lv2/img/x42-dpl.png \
  -t $PKG/usr/share/icons/hicolor/256x256/apps/

# fat1:
create_desktopfile \
  "fat1" \
  "Auto Tune" \
  "Auto-tuner based on Fons Adriaensen's zita-at1" \
  "x42-fat1" \
  "x42_fat1" \
  > $PKG/usr/share/applications/x42-fat1.desktop
install -Dm 644 fat1.lv2/img/x42_fat1.png \
  -t $PKG/usr/share/icons/hicolor/256x256/apps/

# fil4:
create_desktopfile \
  "fil4" \
  "Parametric Equalizer" \
  "4 band parametric equalizer with additional low+high shelf filters, low+highpass" \
  "x42-fil4" \
  "x42_fil4" \
  > $PKG/usr/share/applications/x42-fil4.desktop
install -Dm 644 fil4.lv2/img/x42_fil4.png \
  -t $PKG/usr/share/icons/hicolor/256x256/apps/

# matrixmixer8x8
create_desktopfile \
  "matrixmixer8x8" \
  "Matrix Mixer" \
  "Matrix Mixer 8x8" \
  "x42-matrixmixer8x8" \
  "x42-matrixmixer" \
  > $PKG/usr/share/applications/x42-matrixmixer8x8.desktop
install -Dm 644 matrixmixer.lv2/img/x42-matrixmixer.png \
  -t $PKG/usr/share/icons/hicolor/256x256/apps/

# mixtri:
create_desktopfile \
  "mixtri" \
  "Mixer and Trigger" \
  "Matrix mixer and trigger processor" \
  "x42-mixtri" \
  "x42_mixtri" \
  > $PKG/usr/share/applications/x42-mixtri.desktop
install -Dm 644 mixtri.lv2/img/x42_mixtri.png \
  -t $PKG/usr/share/icons/hicolor/256x256/apps/

# scope:
create_desktopfile \
  "scope" \
  "Oscilloscope" \
  "Simple audio oscilloscope" \
  "x42-scope" \
  "x42-scope" \
  > $PKG/usr/share/applications/x42-mixtri.desktop
install -Dm 644 sisco.lv2/img/x42-scope.png \
  -t $PKG/usr/share/icons/hicolor/256x256/apps/

# spectr:
create_desktopfile \
  "spectr" \
  "Spectrum Analyzer" \
  "Spectrum Analyzer" \
  "x42-spectr" \
  "x42-spectr" \
  > $PKG/usr/share/applications/x42-spectr.desktop
install -Dm 644 spectra.lv2/img/x42-spectr.png \
  -t $PKG/usr/share/icons/hicolor/256x256/apps/

# stepseq:
create_desktopfile \
  "stepseq" \
  "Step Sequencer" \
  "Simple step sequencer for moddevices.com" \
  "x42-stepseq" \
  "x42-stepseq" \
  > $PKG/usr/share/applications/x42-stepseq.desktop
install -Dm 644 stepseq.lv2/img/x42-stepseq.png \
  -t $PKG/usr/share/icons/hicolor/256x256/apps/

# Next the ones that accept a parameter:

# meter:
create_desktopfile_meter() {
cat <<EOT
[Desktop Entry]
Version=1.0
Name=x42-meter_$1 
GenericName=Audio Meter
Comment=$2
TryExec=x42-meter
Exec=x42-meter $1
Icon=x42-meters
Type=Application
Terminal=false
Categories=X-X42-Plugins;
EOT
}
declare -A meter_types=(
  [0]='EBU R128 Meter'
  [1]='K20/RMS Meter (Stereo)'
  [2]='K14/RMS Meter (Stereo)'
  [3]='K12/RMS Meter (Stereo)'
  [4]='BBC Meter (Stereo)'
  [5]='BBC M-6'
  [6]='DIN Meter (Stereo)'
  [7]='EBU Meter (Stereo)'
  [8]='Nordic Meter (Stereo)'
  [9]='VU Meter (Stereo)'
  [10]='True-Peak and RMS Meter (Stereo)'
  [11]='DR-14 - Crest Factor Loudness Range Meter'
  [12]='Stereo Phase-Correlation Meter'
  [13]='Goniometer'
  [14]='Phase/Frequency Wheel'
  [15]='1/3 Octave Spectrum Analyzer'
  [16]='Stereo/Frequency Scope'
  [17]='Signal Distribution Histogram'
  [18]='Bit Meter'
  [19]='Surround Level 8'
  )
for TYPE in $(seq 0 19) ; do
  create_desktopfile_meter $TYPE "meter_types[$TYPE]" \
    > $PKG/usr/share/applications/x42-meter_$TYPE.desktop
done
install -Dm 644 meters.lv2/img/x42-meters.png \
  -t $PKG/usr/share/icons/hicolor/256x256/apps/

# tuna:
create_desktopfile_tuna() {
cat <<EOT
[Desktop Entry]
Version=1.0
Name=x42-tuna_$1 
GenericName=Music Instrument Tuner
Comment=$2
TryExec=x42-tuna
Exec=x42-tuna $1
Icon=x42-tuna
Type=Application
Terminal=false
Categories=X-X42-Plugins;
EOT
}
create_desktopfile_tuna 0 "Instrument Tuner" \
  > $PKG/usr/share/applications/x42-tuna_0.desktop
create_desktopfile_tuna 1 "Instrument Tuner (Spectrum)" \
  > $PKG/usr/share/applications/x42-tuna_1.desktop
install -Dm 644 tuna.lv2/img/x42-tuna.png \
  -t $PKG/usr/share/icons/hicolor/256x256/apps/

# Limit all of them into their own submenu Applications>Multimedia>X42-Plugins
# to avoid clutter in the Multimedia menu,
# see https://specifications.freedesktop.org/menu-spec/menu-spec-1.0.html
install -Dm 644 $SRCDIR/${PRGNAM}.menu \
  -t $PKG/etc/xdg/menus/applications-merged/
install -Dm 644 $SRCDIR/${PRGNAM}.directory \
  -t $PKG/usr/share/desktop-directories/
install -Dm 644 ${SOURCE[1]} \
  -t $PKG/usr/share/icons/hicolor/256x256/apps/

# Add this to the doinst.sh:
mkdir -p $PKG/install
cat <<EOT >> $PKG/install/doinst.sh
# Update the desktop database:
if [ -x usr/bin/update-desktop-database ]; then
  chroot . /usr/bin/update-desktop-database usr/share/applications > /dev/null 2>&1
fi
# Update hicolor theme cache:
if [ -d usr/share/icons/hicolor ]; then
  if [ -x /usr/bin/gtk-update-icon-cache ]; then
    chroot . /usr/bin/gtk-update-icon-cache -f -t usr/share/icons/hicolor 1> /dev/null 2> /dev/null
  fi
fi
# Update the mime database:
if [ -x usr/bin/update-mime-database ]; then
  chroot . /usr/bin/update-mime-database usr/share/mime >/dev/null 2>&1
fi
EOT

# Add documentation for all the plugins:
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a $DOCS $PKG/usr/doc/$PRGNAM-$VERSION/ 2>/dev/null || true
for DIREC in $PLUGIN_LIST ; do
  mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION/$DIREC
  cp -a $DIREC/{AUTHORS,COPYING,LICENSE*,README*} \
    $PKG/usr/doc/$PRGNAM-$VERSION/$DIREC/ 2>/dev/null || true
done
cat $SRCDIR/$(basename $0) > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
chown -R root:root $PKG/usr/doc/$PRGNAM-$VERSION
find $PKG/usr/doc -type f -exec chmod 644 {} \;

# Compress the man page(s):
if [ -d $PKG/usr/man ]; then
  find $PKG/usr/man -type f -name "*.?" -exec gzip -9f {} \;
  for i in $(find $PKG/usr/man -type l -name "*.?") ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
fi

# Strip binaries (if any):
find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

# Add a package description:
mkdir -p $PKG/install
cat $SRCDIR/slack-desc > $PKG/install/slack-desc
cat $SRCDIR/slack-required > $PKG/install/slack-required

# Build the package:
cd $PKG
makepkg --linkadd y --chown n $OUTPUT/${PRGNAM}-${VERSION}-${ARCH}-${BUILD}${TAG}.${PKGTYPE:-tgz} 2>&1 | tee $OUTPUT/makepkg-${PRGNAM}.log
cd $OUTPUT
md5sum ${PRGNAM}-${VERSION}-${ARCH}-${BUILD}${TAG}.${PKGTYPE:-tgz} > ${PRGNAM}-${VERSION}-${ARCH}-${BUILD}${TAG}.${PKGTYPE:-tgz}.md5
cd -
cat $PKG/install/slack-desc | grep "^${PRGNAM}" > $OUTPUT/${PRGNAM}-${VERSION}-${ARCH}-${BUILD}${TAG}.txt
cat $PKG/install/slack-required > $OUTPUT/${PRGNAM}-${VERSION}-${ARCH}-${BUILD}${TAG}.dep

# Restore the original umask:
umask ${_UMASK_}