AppImage: bundle a SoundFont file

In order to sdl_mixer being able to synthetise MIDI.

.github/scripts/Linux/prepare.sh

@@ -51,6 +51,10 @@ sudo apt install libva-dev libdrm-dev libx11-dev libx11-xcb-dev libxcb-present-d
 
 sudo apt install qtbase5-dev
 
+sf=TimGM6mb_but_fixed__piano_.sf2 # https://musical-artifacts.com/artifacts/2642
+curl http://frakira.fi.muni.cz/~xpulec/$sf -o "$HOME/$sf"
+printf '%b' "SDL_SOUNDFONTS=$HOME/$sf\n" >> "$GITHUB_ENV"
+
 # Install cross-platform deps
 "$GITHUB_WORKSPACE/.github/scripts/install-common-deps.sh"
 

data/scripts/Linux-AppImage/AppRun

@@ -26,6 +26,13 @@ QT_PLUGIN_PATH=$(set -- "$DIR"/usr/lib/qt?/plugins; echo "$1")
 export QT_PLUGIN_PATH
 export QT_QPA_PLATFORM_PLUGIN_PATH="$QT_PLUGIN_PATH/platforms"
 
+if [ -z "${SDL_SOUNDFONTS-}" ] && [ -d "$DIR/usr/share/soundfonts" ]; then
+        SDL_SOUNDFONTS=$(find "$DIR/usr/share/soundfonts" -mindepth 1 | head -n 1)
+        export SDL_SOUNDFONTS
+        export SDL_FORCE_SOUNDFONTS=1
+        fj_env="--env=SDL_SOUNDFONTS=${SDL_SOUNDFONTS} --env=SDL_FORCE_SOUNDFONTS=1"
+fi
+
 get_tools() {(
         LD_LIBRARY_PATH=$orig_ld_library_path
         find "$DIR/usr/bin" -mindepth 1 -exec basename {} \; | tr '\n' ' '
@@ -246,7 +253,7 @@ if [ -n "${ULTRAGRID_USE_FIREJAIL-}" ] && [ "$ULTRAGRID_USE_FIREJAIL" != 0 ] &&
         if firejail --help | grep -q -- --keep-var-tmp; then
                 FIREJAIL_OPTS="$FIREJAIL_OPTS --keep-var-tmp"
         fi
-        RUN="firejail --env=LD_PRELOAD=${LD_PRELOAD} --env=LD_LIBRARY_PATH=${LD_LIBRARY_PATH}${FJ_TMPDIR+ --env=TMPDIR=${FJ_TMPDIR}} --env=UG_FONT_DIR=${UG_FONT_DIR} $FIREJAIL_OPTS "
+        RUN="firejail --env=LD_PRELOAD=${LD_PRELOAD} --env=LD_LIBRARY_PATH=${LD_LIBRARY_PATH}${FJ_TMPDIR+ --env=TMPDIR=${FJ_TMPDIR}} --env=UG_FONT_DIR=${UG_FONT_DIR} ${fj_env-} $FIREJAIL_OPTS "
         if [ "${FIREJAIL_DEBUG:-}" ]; then
                 printf "Firejail arguments:\n\t$RUN\n\n"
         fi

data/scripts/Linux-AppImage/create-appimage.sh

@@ -56,8 +56,11 @@ add_fonts() { # for GUI+testcard2
                         cp "$FONT_PATH" $APPPREFIX/share/fonts
                 done
         done
+        if ls $APPPREFIX/lib/*mixer* >/dev/null 2>&1 && [ -f "${SDL_SOUNDFONTS-nonexistent}" ]; then
+                mkdir -p $APPPREFIX/share/soundfonts
+                cp "$SDL_SOUNDFONTS" $APPPREFIX/share/soundfonts
+        fi
 }
-add_fonts
 
 # copy dependencies
 mkdir -p $APPPREFIX/lib
@@ -76,6 +79,8 @@ if ls $APPPREFIX/lib/libwayland-* >/dev/null 2>&1; then
         mv $APPPREFIX/lib/libwayland-* $APPPREFIX/lib/wayland
 fi
 
+add_fonts
+
 if command wget >/dev/null && wget -V | grep -q https; then
         dl() {
                 wget -O - ${GITHUB_TOKEN+--header "Authorization: token $GITHUB_TOKEN"} "$1"