Create timelapse directory and run stream-webrtc as lava user

v4l2-mpp changes (b28cf38 to 6979ef9):

- Fix umask to be 0022 for proper file permissions
- Send error back for failed methods in stream-snap-mqtt
- Remove timelapse if no frames were generated
- Improve state transition for stream-snap-mqtt
- Add RTSP streaming support based on live555
- Refactor HTML WebRTC implementation
- Improve build dependency management with make deps

Create /userdata/.tmp_timelapse directory with proper permissions for timelapse files
Run stream-webrtc as lava user instead of root

Author: paxx12

overlays/camera-v4l2-mpp/root/etc/init.d/S99v4l2-mpp-mipi

@@ -2,6 +2,11 @@
 
 [ ! -e /oem/.camera-native ] || exit 0
 
+# Create temporary directory for timelapse files
+umask 0022
+mkdir -p /userdata/.tmp_timelapse
+chown -R lava:lava /userdata/.tmp_timelapse
+
 CMD_CAPTURE=/usr/local/bin/capture-mipi-mpp
 CMD_CAPTURE_ARGS="--device /dev/video11 --format nv12 --jpeg-quality 7 --jpeg-sock /tmp/capture-mipi-jpeg.sock --mjpeg-sock /tmp/capture-mipi-mjpeg.sock --h264-sock /tmp/capture-mipi-h264.sock"
 
@@ -11,6 +16,7 @@ CMD_WEBRTC_ARGS="--h264-sock /tmp/capture-mipi-h264.sock --webrtc-sock /tmp/capt
 CMD_HTTP=/usr/local/bin/stream-http.py
 CMD_HTTP_ARGS="--jpeg-sock /tmp/capture-mipi-jpeg.sock --mjpeg-sock /tmp/capture-mipi-mjpeg.sock --h264-sock /tmp/capture-mipi-h264.sock --webrtc-sock /tmp/capture-mipi-webrtc.sock --bind 127.0.0.1"
 
+# Differently to Snapmaker, run as user lava, instead of the root user
 CMD_SNAP_MQTT=/usr/local/bin/stream-snap-mqtt.py
 CMD_SNAP_MQTT_ARGS="--jpeg-sock /tmp/capture-mipi-jpeg.sock --publish-dir /home/lava/printer_data/camera"
 
@@ -25,7 +31,7 @@ start() {
     echo "OK"
 
     printf "Starting stream-webrtc: "
-    start-stop-daemon -S -b -q -m -p /var/run/stream-mipi-webrtc.pid -x $CMD_WEBRTC -- $CMD_WEBRTC_ARGS
+    start-stop-daemon -S -b -q -m -p /var/run/stream-mipi-webrtc.pid -c lava -x $CMD_WEBRTC -- $CMD_WEBRTC_ARGS
     echo "OK"
 
     printf "Starting stream-http: "

overlays/camera-v4l2-mpp/root/etc/init.d/S99v4l2-mpp-usb

@@ -22,7 +22,7 @@ start() {
     echo "OK"
 
     printf "Starting stream-webrtc: "
-    start-stop-daemon -S -b -q -m -p /var/run/stream-usb-webrtc.pid -x $CMD_WEBRTC -- $CMD_WEBRTC_ARGS
+    start-stop-daemon -S -b -q -m -p /var/run/stream-usb-webrtc.pid -c lava -x $CMD_WEBRTC -- $CMD_WEBRTC_ARGS
     echo "OK"
 
     printf "Starting stream-http: "

overlays/camera-v4l2-mpp/scripts/01-v4l2-mpp.sh

@@ -13,14 +13,11 @@ TARGET_DIR="$ROOT_DIR/tmp/v4l2-mpp"
 
 if [[ ! -d "$TARGET_DIR" ]]; then
   git clone https://github.com/paxx12/v4l2-mpp.git "$TARGET_DIR" --recursive
-  git -C "$TARGET_DIR" checkout b28cf38c484e281e0b234a06aac2a7a9e524d710
+  git -C "$TARGET_DIR" checkout bc2582be0ec0b4014b35f2579b93e6c18e399cce
 fi
 
-echo ">> Compiling MPP library..."
-"$TARGET_DIR/deps/compile_mpp.sh"
-
-echo ">> Compiling libdatachannel library..."
-"$TARGET_DIR/deps/compile_libdatachannel.sh"
+echo ">> Compiling dependencies..."
+make -C "$TARGET_DIR" deps
 
 echo ">> Compiling v4l2-mpp applications..."
 make -C "$TARGET_DIR" install DESTDIR="$1"