us144mkii/run_tascam_streamer.sh

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#!/bin/bash
# MIT License
# Copyright (c) 2025 serifpersia
#
# Interactive launcher for the TASCAM US-144MKII FIFO streamer.
# Prompts for sample rate, latency profile, and logging options,
# then configures PulseAudio and the C streamer binary accordingly.
# --- Configuration ---
SINK_NAME="TASCAM-US144MKII-OUT"
FIFO_PLAYBACK_PATH="/tmp/tascam-audio-playback"
STREAMER_BINARY="./tascam_streamer" # Assumes the C program is in the same directory
CHANNELS="2"
FORMAT="s24le"
# --- Cleanup Function ---
cleanup() {
echo ""
echo "--- Running cleanup... ---"
pkill -f "$STREAMER_BINARY" 2>/dev/null
sleep 0.5
echo "Unloading PulseAudio module..."
pactl unload-module module-pipe-sink 2>/dev/null
echo "Removing FIFO file..."
rm -f "$FIFO_PLAYBACK_PATH"
echo "--- Cleanup complete. ---"
exit 0
}
# Trap signals to ensure cleanup runs
trap cleanup SIGINT TERM EXIT
# --- Interactive Setup ---
echo "--- TASCAM Streamer Interactive Setup ---"
# 1. Select Sample Rate
rates=("44100" "48000" "88200" "96000")
PS3="Please select a sample rate: "
select rate_choice in "${rates[@]}"; do
if [[ -n "$rate_choice" ]]; then
SELECTED_RATE="$rate_choice"
echo "Selected rate: $SELECTED_RATE Hz"
break
else
echo "Invalid selection. Please try again."
fi
done
echo ""
# 2. Select Latency Profile
profiles=("0: Lowest" "1: Low" "2: Normal" "3: High" "4: Highest")
PS3="Please select a latency profile: "
select profile_choice in "${profiles[@]}"; do
if [[ -n "$profile_choice" ]]; then
SELECTED_PROFILE_INDEX=$((REPLY - 1))
echo "Selected profile: $profile_choice"
break
else
echo "Invalid selection. Please try again."
fi
done
echo ""
# 3. Select Logging Mode
LOG_MODE_FLAG=""
LOG_INTERVAL_FLAG=""
read -p "Use minimal logging instead of the live dashboard? (y/n) [default: n]: " minimal_choice
if [[ "$minimal_choice" == "y" || "$minimal_choice" == "Y" ]]; then
LOG_MODE_FLAG="--minimal-log"
read -p "Enter log interval in milliseconds [default: 1000]: " interval_ms
if [[ -z "$interval_ms" ]]; then
interval_ms=1000 # Set default if user enters nothing
fi
LOG_INTERVAL_FLAG="--log-interval $interval_ms"
LOG_MODE_SUMMARY="Minimal (updates every ${interval_ms}ms)"
else
LOG_MODE_SUMMARY="Live Dashboard (updates every 100ms)"
fi
echo "---------------------------------------------"
echo "Configuration:"
echo " Rate: $SELECTED_RATE Hz"
echo " Profile: $SELECTED_PROFILE_INDEX ($profile_choice)"
echo " Logging: $LOG_MODE_SUMMARY"
echo "---------------------------------------------"
# --- Main Execution ---
rm -f "$FIFO_PLAYBACK_PATH"
echo "Creating playback FIFO at $FIFO_PLAYBACK_PATH..."
mkfifo "$FIFO_PLAYBACK_PATH"
echo "Loading PulseAudio pipe-sink module..."
SINK_MODULE_ID=$(pactl load-module module-pipe-sink file="$FIFO_PLAYBACK_PATH" sink_name="$SINK_NAME" format=$FORMAT rate=$SELECTED_RATE channels=$CHANNELS)
if [ -z "$SINK_MODULE_ID" ]; then
echo "Error: Failed to load PulseAudio pipe-sink module. Aborting."
exit 1
fi
echo "Playback Sink ('$SINK_NAME') loaded with ID: $SINK_MODULE_ID"
echo "You can now select '$SINK_NAME' as an output device in your sound settings."
echo "---------------------------------------------"
echo "Starting C streamer binary..."
# Launch the C program with all selected arguments.
# The log flags will be empty strings if not selected, which bash ignores.
sudo "$STREAMER_BINARY" \
-r "$SELECTED_RATE" \
-p "$SELECTED_PROFILE_INDEX" \
--pipe "$FIFO_PLAYBACK_PATH" \
$LOG_MODE_FLAG \
$LOG_INTERVAL_FLAG
echo "Streamer exited. Waiting for cleanup..."
wait