node-gphoto2
A Node.js wrapper for libgphoto2. Useful for remote controlling of DSLRs and other digital cameras supported by gphoto2.
The included test application currently allows you to
- receive a live preview of your camera (if supported). Tested with an EOS 550D on a 2010 iMac at ~17 fps using Chrome (Safari doesn't work and FF is slow as hell).
- query a list of available configuration options
- query the values of specific configuration options
The test suite can be run using npm test. There's also a small test application (npx coffee examples/server.coffee) which runs on http://localhost:1337 and allows to change camera settings and to take pictures.
Prerequisites
- Node.js: versions 10 (LTS), 12 (LTS), 13 (current)
- libgphoto2: ~2.5.x - via
brew install libgphoto2,apt-get install libgphoto2-devor download and build from http://www.gphoto.org/proj/libgphoto2/ - pkg-config | dpkg (used for dependency checking)
- clang compiler
Test/dev prerequisites
- async
- coffee-script
- mocha
- pre-commit
- should
- sinon
- superagent
Test-server prerequisites
- express
- jade
- underscore
Installation
After installing the dependencies, just install using:
npm install gphoto2
If it fails, please thoroughly check the output - link errors usually indicate missing dependencies. Also, the script tries to detect wether libgphoto2 is correctly installed - if this check fails although you properly installed it, please report :)
Usage
This example only shows how to achieve certain tasks, it's not meant to be executed without any asynchronous control flow logic.
var fs = require('fs');
var gphoto2 = require('gphoto2');
var GPhoto = new gphoto2.GPhoto2();
// Negative value or undefined will disable logging, levels 0-4 enable it.
GPhoto.setLogLevel(1);
GPhoto.on('log', function (level, domain, message) {
console.log(domain, message);
});
// List cameras / assign list item to variable to use below options
GPhoto.list(function (list) {
if (list.length === 0) return;
var camera = list[0];
console.log('Found', camera.model);
// get configuration tree
camera.getConfig(function (er, settings) {
console.log(settings);
});
// Set configuration values
camera.setConfigValue('capturetarget', 1, function (er) {
//...
});
// Take picture with camera object obtained from list()
camera.takePicture({download: true}, function (er, data) {
fs.writeFileSync(__dirname + '/picture.jpg', data);
});
// Take picture and keep image on camera
camera.takePicture({
download: true,
keep: true
}, function (er, data) {
fs.writeFileSync(__dirname + '/picture.jpg', data);
});
// Take picture without downloading immediately
camera.takePicture({download: false}, function (er, path) {
console.log(path);
});
// Take picture and download it to filesystem
camera.takePicture({
targetPath: '/tmp/foo.XXXXXX'
}, function (er, tmpname) {
fs.renameSync(tmpname, __dirname + '/picture.jpg');
});
// Download a picture from camera
camera.downloadPicture({
cameraPath: '/store_00020001/DCIM/100CANON/IMG_1231.JPG',
targetPath: '/tmp/foo.XXXXXX'
}, function (er, tmpname) {
fs.renameSync(tmpname, __dirname + '/picture.jpg');
});
// Get preview picture (from AF Sensor, fails silently if unsupported)
camera.takePicture({
preview: true,
targetPath: '/tmp/foo.XXXXXX'
}, function (er, tmpname) {
fs.renameSync(tmpname, __dirname + '/picture.jpg');
});
});Versioning
This project uses Semantic versioning.