fake thermal camera

fake-thermal-camera is a server that runs some of the thermal camera code (currently on linux not raspbian). Is is designed for using with the cypress integration tests.

Project	fake-thermal-camera
Platform	Linux
Requires	Git repository feverscreen
Licence	GNU General Public License v3.0

Development Instructions

Download fake-thermal-camera and feverscreen into the same folder.

Make sure Docker has been installed.

In the fake-thermal-camera folder start the test server with

> ./run

Open up http://localhost:2041/ to see the feverscreen display.

Put any CPTV files that you want to send to the fake camera in the directory fake-thermal-camera/fakecamera/cptv-files

Browser Requests

http://localhost:2040/sendCPTVFrames

Send file / generated CPTV frames

All query parameters are optional. If you don't specify a file name it will try to use the file person.cptv

• cptv-file: {string} cptv-file to send (defaults to person.cptv)
• start: {number} first frame to send
• end: {number} frame to stop sending at
• generate: {boolean} whether or not to generate frames, if unspecified or false cptv-file will be used
• repeat: {number} number of times to repeat the sending of file or number of frames to generate (defaults to 1)
• minTemp: {number} min temp of frame (defaults to 3000)
• maxTemp: {number} max temp of frame (defaults to 4000)
• ffc: {boolean} if set to true, all generated / file frames will be ffc frames (defaults to false).
• ffc-time: {number} overrides the last ffc time in the telemetry of every frame
• enqueue: {boolean} whether to enqueue the sending of these frames (defaults to false).
• hotspots: {JSON}{hotspot[]} json array of spots to draw over the generated / file frames All the hotspot fields are mandatory, The top left of a frame is (0,0) while the bottom right is (width-1, height-1)
• hotspot:
  • shapeType: {string} "circle" or "rectangle"
  • x: {number} left position of the shape
  • y: {number} top position of the shape
  • width: {number} width of the shape
  • height: {number} height of the shape
  • minTemp: {number} min temp of hotspot
  • maxTemp: {number} max temp of hotspot

Examples

1. http://localhost:2040/sendCPTVFrames?repeat=10&hotspots=[{"shapeType":"circle","x":-5,"y":0,"width":20,"height":20,"minTemp":5000,"maxTemp":6000}]

   • This draws a circle hotspot over every frame of the default cptv-file (person.cptv), this will be repeated 10 times (the CPTV file will be played back 10 times)
   • The hotspot will be the biggest circle that fits into the square, starting at top left (-5,0) with width 20 and height 20. The values of the hotspot will range between 5000 and 6000

2. http://localhost:2040/sendCPTVFrames?generate=True&hotspots=[{"shapeType":"rectangle","x":25,"y":30,"width":15,"height":50,"minTemp":4500,"maxTemp":4500}, {"shapeType":"circle","x":50,"y":50,"width":20,"height":40,"minTemp":5000,"maxTemp":6000}]

   • This generates a single frame with pixel values ranging from 3000 - 4000 (default). A rectangle hotspot will be drawn on the frame with pixel values of 4500 starting at top left (25,30) with width 15 and height 50.
   • A oval hotspot will be drawn on the frame inside a rectangle defined by top left (50,50) width 20 and height 40.

http://localhost:2040/clearCPTVQueue

Clears all enqueued files / frames

• stop: {boolean} stop sending of current frame

http://localhost:2040/playback

Controls the playback

Query parameters:

• stop: {bool} stops the current request (file / frames) playing
• play: {bool} continues play if paused
• clear: {bool} clears queue
• pause: {bool} pauses the playback (only, play will resume it)