The CameraControlerApi is an attempt to control a DSLR via REST functionality. At the moment is it possible to change the camera settings (ISO, aperture, time), take pictures and stream the live view of the camera (only tested with a Nikon D90).
http://device_ip:port/webif/
You will get all valid data for a command from the "list" action.
List the configuration with validate values
http://device_ip:port/settings?action=list
ISO
http://device_ip:port/settings?action=iso&value=200
Aperture
http://device_ip:port/settings?action=aperture&value=f/22
Shutter Speed
http://device_ip:port/settings?action=speed&value=1/1000
Whitebalance
http://device_ip:port/settings?action=whitebalance&value=Cloudy
take a picture
http://device_ip:port/capture?action=shot
autofocus
http://device_ip:port/capture?action=autofocus
list of the available images on camera
http://device_ip:port/fs?action=list
get an image
http://device_ip:port/fs?action=get&value=filename.jpg&path=/path/to/file
Each method will response with a JSON file. If you want a XML response you have to put the command "&type=xml" on the end of the upper commands
live view will be generated as mjpeg-stream. you can easy implement this stream in html inside an image tag e.g:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Live View</title>
</head>
<body>
<img src="http://localhost:8888/liveview" />
</body>
</html>
apt-get install libboost-dev libboost-system-dev libmicrohttpd-dev libgphoto2-dev libexiv2-dev