[Building the struct for a webcam video stream flask app]
This commit is contained in:
Felix Erstfeld
parent
1228e5e5f0
commit
dacad4db10
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# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
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# dependencies
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/node_modules
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/.pnp
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.pnp.js
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# testing
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/coverage
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# next.js
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/.next/
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/out/
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# production
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/build
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# misc
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.DS_Store
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*.pem
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# debug
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npm-debug.log*
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yarn-debug.log*
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yarn-error.log*
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# local env files
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env
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.env/
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.env
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.env.local
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.env.development.local
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.env.test.local
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.env.production.local
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dev.env
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# vercel
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.vercel
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#logs
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*.log
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#_pycache
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__pycache__/
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#image_files
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*.jpg
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*.jpeg
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*.png
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test.py
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static/images/*
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venv/
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84
README.md
84
README.md
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# Make you own Raspberry Pi Camera Stream
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# Flask Camera Live Stream
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Create your own live stream from a Raspberry Pi using the Pi camera module. Build your own applications from here.
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[Original Project](https://github.com/EbenKouao/pi-camera-stream-flask)
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## How it works
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The Pi streams the output of the camera module over the web via Flask. Devices connected to the same network would be able to access the camera stream via
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## Usage
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### Creating the virtual environment
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```
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<raspberry_pi_ip:5000>
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pip install venv
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python -m venv venv
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```
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## Screenshots
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|  |  |
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| ------------------------------------- | ------------------------------------------------------------- |
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| Pi Setup | Pi - Live Stream |
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### Activate the virtual environment
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## Preconditions
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* Raspberry Pi 4, 2GB is recommended for optimal performance. However you can use a Pi 3 or older, you may see a increase in latency.
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* Raspberry Pi 4 Camera Module or Pi HQ Camera Module (Newer version)
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* Python 3 recommended.
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## Library dependencies
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Install the following dependencies to create camera stream.
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*Windows (CMD)*
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```
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sudo apt-get update
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sudo apt-get upgrade
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sudo apt-get install libatlas-base-dev
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sudo apt-get install libjasper-dev
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sudo apt-get install libqtgui4
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sudo apt-get install libqt4-test
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sudo apt-get install libhdf5-dev
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sudo pip3 install flask
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sudo pip3 install numpy
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sudo pip3 install opencv-contrib-python
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sudo pip3 install imutils
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sudo pip3 install opencv-python
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venv\Scripts\activate.bat
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```
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Note: This installation of opencv may take a while depending on your pi model.
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OpenCV alternate installation (in the event of failed opencv builds):
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*Linux / Mac OS*
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```
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sudo apt-get install libopencv-dev python3-opencv
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source venv/bin/activate
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```
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## Step 1 – Cloning Raspberry Pi Camera Stream
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Open up terminal and clone the Camera Stream repo:
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### Installing the dependencies
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```
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cd /home/pi
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git clone https://github.com/EbenKouao/pi-camera-stream-flask.git
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pip install -r requirements.txt
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```
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## Step 2 – Launch Web Stream
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Note: Creating an Autostart of the main.py script is recommended to keep the stream running on bootup.
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```bash cd modules
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sudo python3 /home/pi/pi-camera-stream-flask/main.py
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```
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## Step 3 – Autostart your Pi Stream
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Optional: A good idea is to make the the camera stream auto start at bootup of your pi. You will now not need to re-run the script every time you want to create the stream. You can do this by going editing the /etc/profile to:
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### Running the app (not recommended for production)
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```
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sudo nano /etc/profile
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```
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Go the end of the and add the following (from above):
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```
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sudo python3 /home/pi/pi-camera-stream-flask/main.py
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```
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This would cause the following terminal command to auto-start each time the Raspberry Pi boots up. This in effect creates a headless setup - which would be accessed via SSH.
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Note: make sure SSH is enabled.
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## More Projects / Next Steps
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View the latest Build: [Pi Smart Cam with Motion Sensor](https://github.com/EbenKouao/pi-smart-cam)
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Alternatively, view more projects that build on the Pi Camera on [smartbuilds.io](https://smartbuilds.io).
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python main.py
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```
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52
camera.py
52
camera.py
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#Modified by smartbuilds.io
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#Date: 27.09.20
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#Desc: This scrtipt script..
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import cv2 as cv
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from imutils.video.pivideostream import PiVideoStream
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import imutils
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import time
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import cv2
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from datetime import datetime
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import numpy as np
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class VideoCamera(object):
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def __init__(self, flip = False, file_type = ".jpg", photo_string= "stream_photo"):
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# self.vs = PiVideoStream(resolution=(1920, 1080), framerate=30).start()
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self.vs = PiVideoStream().start()
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self.flip = flip # Flip frame vertically
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self.file_type = file_type # image type i.e. .jpg
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self.photo_string = photo_string # Name to save the photo
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time.sleep(2.0)
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def __init__(self, flip=False, file_type=".jpg", photo_string="stream_photo"):
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self.vs = cv2.VideoCapture(0)
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self.flip = flip
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self.file_type = file_type
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self.photo_string = photo_string
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self.exposure_value = self.vs.get(cv2.CAP_PROP_EXPOSURE)
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def __del__(self):
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self.vs.stop()
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self.vs.release()
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def flip_if_needed(self, frame):
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if self.flip:
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return frame
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def get_frame(self):
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frame = self.flip_if_needed(self.vs.read())
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ret, jpeg = cv.imencode(self.file_type, frame)
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self.previous_frame = jpeg
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ret, frame = self.vs.read()
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if not ret:
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return None
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frame = self.flip_if_needed(frame)
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ret, jpeg = cv2.imencode(self.file_type, frame)
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return jpeg.tobytes()
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# Take a photo, called by camera button
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def take_picture(self):
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frame = self.flip_if_needed(self.vs.read())
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ret, image = cv.imencode(self.file_type, frame)
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today_date = datetime.now().strftime("%m%d%Y-%H%M%S") # get current time
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cv.imwrite(str(self.photo_string + "_" + today_date + self.file_type), frame)
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ret, frame = self.vs.read()
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if not ret:
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return
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frame = self.flip_if_needed(frame)
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today_date = datetime.now().strftime("%m%d%Y-%H%M%S")
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cv2.imwrite(str("static/images/" + self.photo_string + "_" + today_date + self.file_type), frame)
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def set_exposure(self, exposure_value):
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self.vs.set(cv2.CAP_PROP_EXPOSURE, exposure_value)
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self.exposure_value = exposure_value
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def get_exposure(self):
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return self.exposure_value
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45
main.py
45
main.py
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#Modified by smartbuilds.io
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#Date: 27.09.20
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#Desc: This web application serves a motion JPEG stream
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# main.py
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# import the necessary packages
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from flask import Flask, render_template, Response, request, send_from_directory
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from flask import Flask, render_template, Response
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from camera import VideoCamera
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import os
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from util import list_files_in_dir, generate_url
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pi_camera = VideoCamera(flip=False) # flip pi camera if upside down.
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camera = VideoCamera(flip=False)
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# App Globals (do not edit)
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app = Flask(__name__)
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@app.route('/')
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def index():
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return render_template('index.html') #you can customze index.html here
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return render_template('index.html')
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@app.route('/images')
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def images_view():
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file_directory = 'images'
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url_list = list()
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for file in list_files_in_dir('static/'+file_directory):
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url_list.append(generate_url(file_directory, file))
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return render_template('images.html', urls=url_list)
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def gen(camera):
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#get camera frame
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while True:
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frame = camera.get_frame()
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yield (b'--frame\r\n'
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@app.route('/video_feed')
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def video_feed():
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return Response(gen(pi_camera),
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return Response(gen(camera),
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mimetype='multipart/x-mixed-replace; boundary=frame')
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# Take a photo when pressing camera button
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@app.route('/picture')
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def take_picture():
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pi_camera.take_picture()
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camera.take_picture()
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return "None"
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@app.route('/moreexposure')
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def more_exposure():
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exposure = camera.get_exposure()
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camera.set_exposure(exposure + 1)
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return "None"
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@app.route('/lessexposure')
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def less_exposure():
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exposure = camera.get_exposure()
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camera.set_exposure(exposure - 1)
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return "None"
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if __name__ == '__main__':
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app.run(host='0.0.0.0', debug=False)
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app.run(host='0.0.0.0', debug=False)
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blinker==1.6.2
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click==8.1.7
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colorama==0.4.6
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Flask==2.3.3
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itsdangerous==2.1.2
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Jinja2==3.1.2
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MarkupSafe==2.1.3
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numpy==1.25.2
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opencv-python==4.8.0.76
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Werkzeug==2.3.7
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$(function() {
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$('a#take-picture').on('click', function(e) {
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e.preventDefault()
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$.getJSON('/picture',
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function(data) {
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//do nothing
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});
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return false;
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});
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});
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$(function() {
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$('a#more-exposure').on('click', function(e) {
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e.preventDefault()
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$.getJSON('/moreexposure',
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function(data) {
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//do nothing
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});
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return false;
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});
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});
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$(function() {
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$('a#less-exposure').on('click', function(e) {
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e.preventDefault()
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$.getJSON('/lessexposure',
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function(data) {
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//do nothing
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});
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return false;
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});
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});
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$(function() {
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$('a#copy-video-stream-url').on('click', function(e) {
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const textArea = document.createElement("textarea");
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const video_stream_path = document.getElementById("bg").src;
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textArea.value = video_stream_path;
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document.body.appendChild(textArea);
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textArea.select();
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document.execCommand("copy");
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document.body.removeChild(textArea);
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return false;
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});
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});
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body {
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margin: 0;
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padding: 0;
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width: 100vw;
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height: 100vh;
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overflow: hidden;
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background-color: black;
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font-family: Arial, Helvetica, sans-serif;
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}
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.navbar {
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overflow: hidden;
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position: fixed;
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bottom: 0;
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width: 100%;
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margin: auto;
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text-align: center;
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background-color: black;
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opacity:0.6;
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}
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.navbar div {
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display: inline-block;
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}
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.navbar a {
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float: left;
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display: block;
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color: #f2f2f2;
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text-align: center;
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padding: 14px 16px;
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text-decoration: none;
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font-size: 17px;
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}
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.navbar a.active {
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background-color: #4CAF50;
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color: white;
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}
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.main {
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padding: 16px;
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margin-bottom: 30px;
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}
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i.fa {
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display: inline-block;
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border-radius: 60px;
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box-shadow: 0px 0px 2px #888;
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padding: 0.5em 0.6em;
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background: blue;
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color: white;
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}
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img {
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display: block;
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margin-left: auto;
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margin-right: auto;
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width: 35%
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}
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button {
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background-color: Transparent;
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background-repeat:no-repeat;
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border: none;
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cursor:pointer;
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overflow: hidden;
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outline:none;
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}
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.camera-bg {
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display: block;
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margin: auto;
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max-height: 100vh;
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max-width: 100vh;
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width: 100%;
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background-position: center;
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background-repeat: no-repeat;
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background-size: cover;
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background-attachment: fixed;
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}
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Camera Live Feed - Images</title>
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</head>
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<body>
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{% for url in urls %}
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<img src="{{ url }}" alt="Taken Image">
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{% endfor %}
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</body>
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</html>
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<!DOCTYPE html>
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<html>
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<head>
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<link rel="shortcut icon" href="{{ url_for('static', filename='favicon.ico') }}">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<style>
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body {
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margin: 0;
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font-family: Arial, Helvetica, sans-serif;
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}
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<head>
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<meta charset="UTF-8">
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<title>Camera Live Feed</title>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<link rel="stylesheet" href="{{ url_for('static', filename='style.css') }}">
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<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
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</head>
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.navbar {
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overflow: hidden;
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position: fixed;
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bottom: 0;
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width: 100%;
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margin: auto;
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background-color: black;
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opacity:0.6;
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}
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.navbar a {
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float: left;
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display: block;
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color: #f2f2f2;
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text-align: center;
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padding: 14px 16px;
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text-decoration: none;
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font-size: 17px;
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}
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.navbar a:hover {
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}
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.navbar a.active {
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background-color: #4CAF50;
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color: white;
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}
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.main {
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padding: 16px;
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margin-bottom: 30px;
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}
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.camera-movement{
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float: none;
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position: absolute;
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top: 50%;
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left: 50%;
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transform: translate(-50%, -50%);
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}
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.lights-button{
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float: right;
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}
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i.fa {
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display: inline-block;
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border-radius: 60px;
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box-shadow: 0px 0px 2px #888;
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padding: 0.5em 0.6em;
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}
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img {
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||||
display: block;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
width: 35%
|
||||
}
|
||||
|
||||
button {
|
||||
background-color: Transparent;
|
||||
background-repeat:no-repeat;
|
||||
border: none;
|
||||
cursor:pointer;
|
||||
overflow: hidden;
|
||||
outline:none;
|
||||
}
|
||||
|
||||
//CSS
|
||||
.camera-bg {
|
||||
position: fixed;
|
||||
top: 0;
|
||||
left: 0;
|
||||
|
||||
/* Preserve aspet ratio */
|
||||
min-width: 100%;
|
||||
min-height: 100%;
|
||||
|
||||
/* Full height */
|
||||
height: 100%;
|
||||
|
||||
|
||||
/* Center and scale the image nicely */
|
||||
background-position: center;
|
||||
background-repeat: no-repeat;
|
||||
background-size: cover;
|
||||
|
||||
}
|
||||
|
||||
.top-right-logo {
|
||||
position: absolute;
|
||||
top: 3%;
|
||||
left: 2%;
|
||||
font-size: 38px;
|
||||
color: white;
|
||||
opacity: 0.5;
|
||||
}
|
||||
|
||||
body {
|
||||
margin: 0;
|
||||
padding: 0;
|
||||
width: 100vw;
|
||||
height: 100vh;
|
||||
overflow: hidden;
|
||||
background-color: black;
|
||||
}
|
||||
|
||||
|
||||
</style>
|
||||
</head>
|
||||
|
||||
<title>Make - PiStream</title>
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||||
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
|
||||
|
||||
<body>
|
||||
|
||||
<div class="main" id="newpost">
|
||||
<img class="camera-bg" style="width: 100%; height:80%; background-attachment: fixed;" id="bg" class="center" src="{{ url_for('video_feed') }}">
|
||||
<!--<img class="camera-bg" style="width: 100%; height:80%; background-attachment: fixed;" id="bg" class="center" src="https://www.psdbox.com/wp-content/uploads/2011/01/security-camera-photoshop-effect.jpg">-->
|
||||
|
||||
</div>
|
||||
|
||||
<div class="top-right-logo">
|
||||
<a></a>Raspberry Pi - Camera Stream</a>
|
||||
</div>
|
||||
|
||||
|
||||
<div class="navbar">
|
||||
|
||||
<div class="ignoreCall">
|
||||
<a id=decline class="but_def">
|
||||
<button id="button">
|
||||
<i style="background: red; color: white;" class="fa fa-times fa-2x" aria-hidden="true"></i>
|
||||
</button>
|
||||
</a>
|
||||
<body>
|
||||
<div class="main">
|
||||
<img class="camera-bg" id="bg" class="center" src="{{ url_for('video_feed') }}">
|
||||
</div>
|
||||
|
||||
<div class="picture">
|
||||
<a href=# id=take-picture class="picture_class">
|
||||
<button id="take-picture-button" onclick="take_picture()">
|
||||
<i style="background: blue; color: white;" class="fa fa-camera fa-2x" aria-hidden="true"></i>
|
||||
</button>
|
||||
</a>
|
||||
<div class="navbar">
|
||||
<div>
|
||||
<a href="/images" title="Gallery">
|
||||
<button>
|
||||
<i class="fa fa-picture-o fa-2x" aria-hidden="true"></i>
|
||||
</button>
|
||||
</a>
|
||||
</div>
|
||||
|
||||
<div>
|
||||
<a href="#" id="take-picture" title="Take a picture">
|
||||
<button>
|
||||
<i class="fa fa-camera fa-2x" aria-hidden="true"></i>
|
||||
</button>
|
||||
</a>
|
||||
</div>
|
||||
|
||||
<div>
|
||||
<a href="#" id="more-exposure" title="More exposure">
|
||||
<button>
|
||||
<i class="fa fa-plus fa-2x" aria-hidden="true"></i>
|
||||
</button>
|
||||
</a>
|
||||
</div>
|
||||
|
||||
<div>
|
||||
<a href="#" id="less-exposure" title="Less exposure">
|
||||
<button>
|
||||
<i class="fa fa-minus fa-2x" aria-hidden="true"></i>
|
||||
</button>
|
||||
</a>
|
||||
</div>
|
||||
|
||||
<div>
|
||||
<a href="#" id="copy-video-stream-url" title="Copy the video stream url">
|
||||
<button>
|
||||
<i class="fa fa-clipboard fa-2x" aria-hidden="true"></i>
|
||||
</button>
|
||||
</a>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
|
||||
|
||||
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
|
||||
|
||||
<script type="text/javascript">
|
||||
|
||||
// stop stream - called when pressing red X
|
||||
var button = document.getElementById('button');
|
||||
|
||||
button.onclick = function() {
|
||||
var div = document.getElementById('newpost');
|
||||
if (div.style.display !== 'none') {
|
||||
div.style.display = 'none';
|
||||
}
|
||||
else {
|
||||
div.style.display = 'block';
|
||||
}
|
||||
};
|
||||
|
||||
// Take and save a photo, call picture function in main.py
|
||||
$(function() {
|
||||
$('a#take-picture').on('click', function(e) {
|
||||
e.preventDefault()
|
||||
$.getJSON('/picture',
|
||||
function(data) {
|
||||
//do nothing
|
||||
});
|
||||
return false;
|
||||
});
|
||||
});
|
||||
|
||||
</script>
|
||||
|
||||
<script type="text/javascript">
|
||||
// take picture
|
||||
var button = document.getElementById('take-pica-button');
|
||||
|
||||
button.onclick = function() {
|
||||
var div = document.getElementById('newpost');
|
||||
if (div.style.display !== 'none') {
|
||||
div.style.display = 'none';
|
||||
}
|
||||
else {
|
||||
div.style.display = 'block';
|
||||
}
|
||||
};
|
||||
|
||||
</script>
|
||||
|
||||
</body>
|
||||
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
|
||||
<script type="text/javascript" src="{{ url_for('static', filename='script.js') }}"></script>
|
||||
</body>
|
||||
</html>
|
||||
|
|
|
|||
|
|
@ -0,0 +1,13 @@
|
|||
import os
|
||||
from flask import url_for
|
||||
|
||||
def list_files_in_dir(directory_path: str) -> list[str]:
|
||||
file_list = os.listdir(directory_path)
|
||||
|
||||
file_list = [file for file in file_list if os.path.isfile(os.path.join(directory_path, file))]
|
||||
|
||||
return file_list
|
||||
|
||||
def generate_url(directory_path: str, file_name: str) -> str:
|
||||
url = url_for('static', filename=f'{directory_path}/{file_name}')
|
||||
return url
|
||||
Loading…
Reference in New Issue