Need PhotoBooth Mac feature in iphone app

Have a look on following application

http://itunes.apple.com/us/app/fatbooth/id372268904?mt=8

i think they are using the same feature provided my PhotoBooth MAC.

Please suggest any api or any other possible solu开发者_如何转开发tion so that I can build an iphone application

Thanks

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Core Image (certainly used by Photo Booth on the Mac) is not a public API on the iPhone. To achieve something similar, you would have to use OpenGL and write your own shaders (or do something like OpenGL mesh distortion).