add script to launch reaper with specified PIPEWIRE_LATENCY

1 files changed, 129 insertions, 0 deletions

diff --git a/rl b/rl
new file mode 100755
index 0000000..3275d11
--- /dev/null
+++ b/rl
@@ -0,0 +1,129 @@
+#!/bin/bash
+
+#{{{ printhelp
+printhelp () {
+  printf "rl: launch REAPER with a specified PIPEWIRE latency (to a point).\n"
+  printf "    this sets the PIPEWIRE_LATENCY variable for REAPER; as such, it\n"
+  printf "    does not necessarily set the period size and sample rate, but\n"
+  printf "    rather calculates based on the ratio and what values are "
+  printf "available,\n"
+  printf "  -h) printf this help message\n"
+  printf "  -f) force using the provided rate even if PIPEWIRE_LATENCY is "
+  printf "already set.\n"
+  printf "  -w) use Wayland menu (bemenu)\n"
+  printf "  -x) use X11 menu (dmenu)\n"
+  printf "  -a ARG) provide ARG as an argument for REAPER\n"
+  printf "  -d ARG) provide ARG as an argument for dmenu/bemenu\n"
+  printf "  -p ARG) sets the period size to ARG\n"
+  printf "  -s ARG) sets the sample rate to ARG\n"
+  exit
+}
+#}}}
+
+#{{{ message
+message () {
+  if [[ -t 0 ]]; then
+    printf "$@\n"
+  else
+    notify-send "rl" "$@"
+  fi
+}
+#}}}
+
+#{{{ getopts
+unset DARG RARG USE_SERVER
+while getopts "hfwxa:d:p:s:" o; do case "${o}" in
+  f) FORCE="YES" ;;
+  x) USE_SERVER="X11" ;;
+  w) USE_SERVER="WAY" ;;
+  a) RARG="$OPTARG $RARG" ;;
+  d) DARG="$OPTARG $DARG";;
+  p) PERIOD_SIZE="$OPTARG" ;;
+  s) SAMPLE_RATE="$OPTARG" ;;
+  *) printhelp ;;
+esac done
+#}}}
+
+#{{{ Check display server if -w or -x not provided
+if [ -z "$USE_SERVER" ]; then
+  if [ -n "$WAYLAND_DISPLAY" ]; then
+    DMENU="bemenu"
+  elif [ -n "$DISPLAY" ]; then
+    DMENU="dmenu"
+  else
+    printf "Can't tell if Wayland or X; what gives?\n"
+    exit 1
+  fi
+else
+  case "$USE_SERVER" in
+    X11) DMENU="dmenu" ;;
+    WAY) DMENU="bemenu" ;;
+    *) printf "Can't tell if Wayland or X; what gives?\n" ;;
+  esac
+  unset USE_SERVER
+fi
+#}}}
+
+#{{{ Check if pipewire exists and is running
+if type pipewire >/dev/null 2>&1; then
+  if ! pgrep -x pipewire >/dev/null 2>&1; then
+    printf "pipewire is not running; this is not going to work!\n"
+    exit 1
+  fi
+else
+  if ! pgrep -x pipewire >/dev/null 2>&1; then
+    printf "Cannot find pipewire in path, and it is not running; is it "
+    printf "installed?\n"
+    exit 1
+  fi
+fi
+#}}}
+
+#{{{ main
+#{{{ if PIPEWIRE_LATENCY is already set
+if [ -n "$PIPEWIRE_LATENCY" ]; then
+  [ -z "$FORCE" ] && \
+    FORCE="$(echo "YES NO" | \
+    $DMENU -p "Override PIPEWIRE_LATENCY VALUE of ${PIPEWIRE_LATENCY}?" $DARG)"
+  case "$FORCE" in
+    YES|yes) unset FORCE ;;
+    NO|no)
+      message "Using existing PIPEWIRE_LATENCY=${PIPEWIRE_LATENCY}..."
+      unset DMENU DARG FORCE
+      reaper $RARG
+      unset RARG
+      ;;
+    *)
+      unset DMENU DARG RARG FORCE
+      message "Did not understand value."
+      exit 1
+      ;;
+  esac
+fi
+#}}}
+[ -z "$PERIOD_SIZE" ] && \
+  PERIOD_SIZE="$(echo "16
+32
+64
+128
+256
+512
+1024" | $DMENU -p "Period size: " $DARG)"
+if [ -z "$PERIOD_SIZE" ]; then
+  message "PERIOD_SIZE not set; will not continue."
+  exit 1
+fi
+[ -z "$SAMPLE_RATE" ] && \
+  SAMPLE_RATE="$(echo "44100
+48000
+88200
+96000
+176400
+192000" | $DMENU -p "Sample rate: " $DARG)"
+if [ -z "$SAMPLE_RATE" ]; then
+  message "SAMPLE_RATE not set; will not continue."
+  exit 1
+fi
+PIPEWIRE_LATENCY="${PERIOD_SIZE}/${SAMPLE_RATE}" reaper $RARG
+unset PERIOD_SIZE SAMPLE_RATE DMENU DARG RARG
+#}}}