feat: add dummy webcam streamer (#9)

Signed-off-by: Dominik Willner th33xitus@gmail.com

Dockerfile

@@ -3,7 +3,7 @@ FROM python:3.10-slim-bullseye AS builder
 RUN apt-get update && apt-get install -y \
     --no-install-recommends \
     --no-install-suggests \
-    ### non specific packages
+    ### non-specific packages
     git \
     swig \
     virtualenv \
@@ -26,29 +26,41 @@ WORKDIR /build
 
 ### Prepare our applications
 #### Klipper
-RUN git clone https://github.com/klipper3d/klipper && \
-    virtualenv -p python3 /build/klippy-env && \
-    /build/klippy-env/bin/pip install -r /build/klipper/scripts/klippy-requirements.txt
+RUN git clone https://github.com/klipper3d/klipper \
+    && virtualenv -p python3 /build/klippy-env \
+    && /build/klippy-env/bin/pip install -r /build/klipper/scripts/klippy-requirements.txt
 
 #### Simulavr
 COPY config/simulavr.config /usr/src
-RUN git clone -b master git://git.savannah.nongnu.org/simulavr.git && \
+RUN git clone -b master git://git.savannah.nongnu.org/simulavr.git \
     # Build the firmware
-    cd klipper && \
-    cp /usr/src/simulavr.config .config && \
-    make PYTHON=python3 && \
-    cp out/klipper.elf /build/simulavr.elf && \
-    rm -f .config && make PYTHON=python3 clean && \
+    && cd klipper \
+    && cp /usr/src/simulavr.config .config \
+    && make PYTHON=python3 \
+    && cp out/klipper.elf /build/simulavr.elf \
+    && rm -f .config \
+    && make PYTHON=python3 clean \
     # Build simulavr
-    cd ../simulavr && \
-    make python && \
-    make build && \
-    make clean
+    && cd ../simulavr \
+    && make python \
+    && make build \
+    && make clean
 
 #### Moonraker
-RUN git clone https://github.com/Arksine/moonraker && \
-    virtualenv -p python3 /build/moonraker-env && \
-    /build/moonraker-env/bin/pip install -r /build/moonraker/scripts/moonraker-requirements.txt
+RUN git clone https://github.com/Arksine/moonraker \
+    && virtualenv -p python3 /build/moonraker-env \
+    && /build/moonraker-env/bin/pip install -r /build/moonraker/scripts/moonraker-requirements.txt
+
+#### MJPG-Streamer
+RUN git clone --depth 1 https://github.com/jacksonliam/mjpg-streamer \
+    && cd mjpg-streamer \
+    && cd mjpg-streamer-experimental \
+    && mkdir _build \
+    && cd _build \
+    && cmake -DPLUGIN_INPUT_HTTP=OFF -DPLUGIN_INPUT_UVC=OFF -DPLUGIN_OUTPUT_FILE=OFF -DPLUGIN_OUTPUT_RTSP=OFF -DPLUGIN_OUTPUT_UDP=OFF .. \
+    && cd .. \
+    && make \
+    && rm -rf _build
 
 ## --------- This is the runner image
 
@@ -56,7 +68,7 @@ FROM python:3.10-slim-bullseye AS runner
 RUN apt-get update && apt-get install -y \
     --no-install-recommends \
     --no-install-suggests \
-    ### non specific packages
+    ### non-specific packages
     git \
     build-essential \
     supervisor \
@@ -98,7 +110,10 @@ COPY --from=builder --chown=printer:printer /build/moonraker ./moonraker
 COPY --from=builder --chown=printer:printer /build/moonraker-env ./moonraker-env
 COPY --from=builder --chown=printer:printer /build/simulavr ./simulavr
 COPY --from=builder --chown=printer:printer /build/simulavr.elf ./simulavr.elf
+COPY --from=builder --chown=printer:printer /build/mjpg-streamer/mjpg-streamer-experimental ./mjpg-streamer
 
+# Copy example configs and dummy streamer images
 COPY ./example-configs/ ./example-configs/
+COPY ./mjpg_streamer_images/ ./mjpg_streamer_images/
 
 ENTRYPOINT ["/bin/start"]

README.md

@@ -6,14 +6,21 @@
 ### **Run a simulated Klipper 3D-Printer in a Docker container.**
 ---
 
-### Instructions:
+### Setup Instructions:
 1. Clone this repository
 2. Open a terminal in the cloned folder
-3. Run `docker-compose up -d` to build the docker image and start the container afterwards in detached mode
+3. Run `docker-compose up -d` to build the docker image and start the container in detached mode
 
 ---
 
-Common docker commands:
+### Configure a Dummy-Webcam:
+To configure a dummy-webcam, use the following URLs:
+   * Stream: `http://localhost:8110/?action=stream`
+   * Snapshot: `http://localhost:8110/?action=snapshot`
+
+---
+
+### Common Docker commands:
 * Get all container IDs: `docker ps -a`
 * Get only the ID of running containers: `docker ps`
 * Access a containers shell: `docker exec -it <CONTAINER ID> bash`
@@ -21,4 +28,4 @@ Common docker commands:
 * Rebuild image, recreate and start container : `docker-compose up -d --build`
 
 ---
-Current image size: ~685 MB
+Current image size: 734.45 MB

config/supervisord.conf

@@ -44,3 +44,13 @@ directory=/home/printer
 autostart=true
 autorestart=true
 redirect_stderr=true
+
+[program:webcamd]
+command=/home/printer/mjpg-streamer/mjpg_streamer -i "input_file.so -e -d 0.8 -f /home/printer/webcam_images" -o "output_http.so -w /home/printer/mjpg-streamer/www"
+user=printer
+process_name=webcamd
+directory=/home/printer
+environment=LD_LIBRARY_PATH="/home/printer/mjpg-streamer"
+autostart=true
+autorestart=true
+redirect_stderr=true

docker-compose.yml

@@ -10,8 +10,10 @@ services:
       - ./printer_storage/gcode_files:/home/printer/gcode_files:delegated
       - ./printer_storage/klipper_config:/home/printer/klipper_config:delegated
       - ./printer_storage/klipper_logs:/home/printer/klipper_logs:delegated
+      - ./printer_storage/webcam_images:/home/printer/webcam_images:delegated
     ports:
       - "7125:7125"
+      - "8110:8080"
     networks:
       - dev_net
 networks:

scripts/start.sh

@@ -1,23 +1,78 @@
-#!/bin/bash
-[ ! -e /bin/systemctl ] && sudo -S ln -s /bin/true /bin/systemctl
+#!/usr/bin/env bash
 
-cd ~ || exit 1
-[ ! -d ~/klipper_logs ] && mkdir klipper_logs
-[ ! -d ~/gcode_files ] && mkdir gcode_files
-[ ! -d ~/.moonraker_database ] && mkdir .moonraker_database
+#=======================================================================#
+# Copyright (C) 2022 mainsail-crew <https://github.com/mainsail-crew>   #
+# Author: Dominik Willner <th33xitus@gmail.com>                         #
+#                                                                       #
+# This file is part of virtual-klipper-printer                          #
+# https://github.com/mainsail-crew/virtual-klipper-printer              #
+#                                                                       #
+# This file may be distributed under the terms of the GNU GPLv3 license #
+#=======================================================================#
 
-if [ ! -d ~/klipper_config ] || find ~/klipper_config -type d -empty; then
-  cd ~/example-configs || exit 1
-  cp -r ./* ~/klipper_config
+set -e
+
+REQUIRED_FOLDERS=(
+  "${HOME}/klipper_config"
+  "${HOME}/klipper_logs"
+  "${HOME}/gcode_files"
+  "${HOME}/webcam_images"
+  "${HOME}/.moonraker_database"
+)
+
+function status_msg() {
+  echo "###[$(date +%T)]: ${1}"
+}
+
+######
+# Test for correct ownership of all required folders
+###
+function check_folder_perms() {
+  status_msg "Check folders permissions ..."
+  for folder in "${REQUIRED_FOLDERS[@]}"; do
+    if [[ $(stat -c "%U" "${folder}") != "printer" ]]; then
+      status_msg "chown for user: 'printer' on folder: ${folder}"
+      sudo chown printer:printer "${folder}"
     fi
+  done
+  status_msg "OK!"
+}
 
-sudo chown -R printer:printer ~/klipper_config
-sudo chown -R printer:printer ~/klipper_logs
-sudo chown -R printer:printer ~/gcode_files
-sudo chown -R printer:printer ~/.moonraker_database
+######
+# Copy example configs if ~/klipper_config is empty
+###
+function copy_example_configs() {
+  if [[ ! "$(ls -A "${HOME}/klipper_config")" ]]; then
+    status_msg "Directory ${HOME}/klipper_config is empty!"
+    status_msg "Copy example configs ..."
+    cp -R ~/example-configs/* ~/klipper_config
+    status_msg "OK!"
+  fi
+}
+
+######
+# Copy dummy images if ~/webcam_images is empty
+###
+function copy_dummy_images() {
+  if [[ ! "$(ls -A "${HOME}/webcam_images")" ]]; then
+    status_msg "Directory ${HOME}/webcam_images is empty!"
+    status_msg "Copy dummy images ..."
+    cp -R ~/mjpg_streamer_images/*.jpg ~/webcam_images
+    status_msg "OK!"
+  fi
+}
+
+#===================================================#
+#===================================================#
+
+[[ ! -e /bin/systemctl ]] && sudo -S ln -s /bin/true /bin/systemctl
+
+check_folder_perms
+copy_example_configs
+copy_dummy_images
 
 sudo -S rm /bin/systemctl
 sudo -S ln -s /bin/service_control /bin/systemctl
 
-cd ~ && echo "Everything is ready ... Starting ..."
+cd ~ && status_msg "Everything is ready! Starting ..."
 /usr/bin/supervisord