record: Add RTSP support (to be continued)

.gitignore

@@ -1,6 +1,5 @@
 var/
 /.venv/
-/analyzer/
 
 .env
 
@@ -8,6 +7,8 @@ species_list.txt
 
 push.sh
 
-config/*.conf
-
+/config/*.conf
+!/config/*.conf.example
+/config/stations/*.conf
+!/config/stations/*.conf.example
 .vscode/

config/stations/station.conf.example

@@ -0,0 +1,3 @@
+# Config file for a distant recording station 
+RTSP_URL=rtsp://host:1000/birdnet/stream
+STATION_NAME=garden

daemon/birdnet_recording.sh

@@ -27,12 +27,20 @@ record_loop() {
     done
 }
 
+FFMPEG_OPTIONS="-nostdin -hide_banner -loglevel error -nostats -vn -acodec pcm_s16le -ac 1 -ar 48000 "
 
-record() {
+record_stream() {
+    local STREAM=$1
+    local DURATION=$2
+    local debug "Recording from $STREAM for $DURATION seconds"
+    ffmpeg $FFMPEG_OPTIONS  -f  -i ${DEVICE} -t ${DURATION} file:${CHUNK_FOLDER}/in/birdnet_$(date "+%Y%m%d_%H%M%S").wav
+}
+
+record_device() {
     DEVICE=$1
     DURATION=$2
     debug "Recording from $DEVICE for $DURATION seconds"
-    ffmpeg -nostdin -hide_banner -loglevel error -nostats -f pulse -i ${DEVICE} -t ${DURATION} -vn -acodec pcm_s16le -ac 1 -ar 48000 -af "volume=$RECORDING_AMPLIFY" file:${CHUNK_FOLDER}/in/birdnet_$(date "+%Y%m%d_%H%M%S").wav
+    ffmpeg $FFMPEG_OPTIONS -f pulse -i ${DEVICE} -t ${DURATION} -af "volume=$RECORDING_AMPLIFY" file:${CHUNK_FOLDER}/in/birdnet_$(date "+%Y%m%d_%H%M%S").wav
 }
 
 config_filepath="./config/analyzer.conf"
@@ -53,4 +61,13 @@ if [[ -z $AUDIO_DEVICE ]]; then
     exit 1
 fi
 
-record_loop $AUDIO_DEVICE $RECORDING_DURATION
+if [[ $AUDIO_RECORDING = "true" ]]; then
+    record_loop $AUDIO_DEVICE $RECORDING_DURATION &
+fi
+
+if [[ $AUDIO_STATIONS = "true" ]]; then
+    for station in $(ls ./config/stations/*.conf); do
+        source $station
+        record_stream $STATION_URL $RECORDING_DURATION &
+    done
+fi

daemon/database/scripts/database.sh

@@ -1,5 +1,5 @@
 #! /usr/bin/env bash
-# SQLite library to deal with BirdNET-stream database
+# SQLite library to deal with BirdNET-stream observations database
 
 set -e
 
@@ -10,27 +10,31 @@ source ./config/analyzer.conf
 
 DATABASE=${DATABASE:-"./var/db.sqlite"}
 
+query() {
+    sqlite3 -cmd ".timeout 1000" $DATABASE "$1"
+}
+
 get_location_id() {
-    sqlite3 -cmd ".timeout 1000" $DATABASE "SELECT location_id FROM location WHERE latitude=$1 AND longitude=$2"
+    query "SELECT location_id FROM location WHERE latitude=$1 AND longitude=$2"
 }
 
 get_taxon_id() {
-    sqlite3 -cmd ".timeout 1000" $DATABASE "SELECT taxon_id FROM taxon WHERE scientific_name='$1'"
+    query "SELECT taxon_id FROM taxon WHERE scientific_name='$1'"
 }
 
 insert_taxon() {
-    sqlite3 -cmd ".timeout 1000" $DATABASE "INSERT INTO taxon (scientific_name, common_name) VALUES (\"$1\", \"$2\")"
+    query $DATABASE "INSERT INTO taxon (scientific_name, common_name) VALUES (\"$1\", \"$2\")"
 }
 
 insert_location() {
-    sqlite3 -cmd ".timeout 1000" $DATABASE "INSERT INTO location (latitude, longitude) VALUES ($1, $2)"
+    query "INSERT INTO location (latitude, longitude) VALUES ($1, $2)"
 }
 
 insert_observation() {
-    sqlite3 -cmd ".timeout 1000" $DATABASE "INSERT INTO observation (audio_file, start, end, taxon_id, location_id, confidence, date) VALUES ('$1', '$2', '$3', '$4', '$5', '$6', '$7')"
+    query "INSERT INTO observation (audio_file, start, end, taxon_id, location_id, confidence, date) VALUES ('$1', '$2', '$3', '$4', '$5', '$6', '$7')"
 }
 
 # Check if the observation already exists in the database
 observation_exists() {
-    sqlite3 -cmd ".timeout 1000" $DATABASE "SELECT EXISTS(SELECT observation_id FROM observation WHERE audio_file='$1' AND start='$2' AND end='$3' AND taxon_id='$4' AND location_id='$5')"
+    query "SELECT EXISTS(SELECT observation_id FROM observation WHERE audio_file='$1' AND start='$2' AND end='$3' AND taxon_id='$4' AND location_id='$5')"
 }