This is a Java wrapper around the EDSDK that gives you full access to your Canon SLR camera via the EDSDK on Windows*. The features include:

• Taking and downloading pictures
• Manually adjusting focus
• Setting apperature, exposure, ISO
• Accessing live view

(*) With a few changes it could also work on Mac OSX.

Before you can use this library you need to obtain the EDSDK native library from Canon. You can do so via their developers program:

• Canon Europe
• Canon USA
• Canon Asia
• Canon Oceania

Once you were granted access - this may take a few days - download the latest version of their library and follow the usage instructions.

Using the EDSDK from Java directly is possible using the edsdk.native package, but because of threading difficulties and the involved data types this can be a bit painful. In the edsdk.utils package you find a small layer built on top of the EDSDK that gives you more Java-like examples.

Most notably, all calls are asynchroneous. Every command gives you a CanonTask and you can choose if you want to wait for the result or be notified when it's done.

CanonCamera slr = new CanonCamera(); 
slr.openSession();

// Use .get() to block and wait for the result
File file = slr.shoot().get(); 
System.out.println( "File: " + file.getAbsolutePath() );

// Use async handlers to continue your code immediately 
slr.shoot().whenDone( f -> System.out.println( f ) ); 

// close session! 
// because commands are queued this won't be executed 
// until the above slr.shoot() finished it's work. 
slr.closeSession(); 

	CanonCamera slr = new CanonCamera(); 
	slr.openSession();
	File file = slr.shoot().get(); 
	slr.closeSession();

For more look at the examples in src/gettingstarted.

To regenerate the JNA wrapper classes:

set EDSDK_HOME=path-to-edsdk
ant generate-wrapper

• Currently JNAerator is not detecting __stdcall correctly so the Callbacks defined in EdSdkLibrary need to be manually modified to extend StdCallCallback. Technically EdSdkLibrary itself should also extend StdCallLibrary but it's possible to workaround this using options passed into the Native.loadLibrary() method (see CanonCamera class for this workaround).