March 2008
Intermediate to advanced
288 pages
6h 21m
English
Content preview from iPhone Open Application DevelopmentBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Taking Camera Photos
The Photo Library framework is a proprietary framework providing common methods for the iPhone's Camera application. One useful feature buried inside this framework is the CameraController class, which is capable of snapping 16,001,200 photos in JPEG format.
This is very cool, while also very creepy at the same time. The camera controller itself makes no attempt to notify the user that a photo is being taken, nor is there any indication on the iPhone's display. This creates the possibility for real spyware (that is, voyeurware) to easily be written and installed on a user's iPhone without her knowledge.
Installing CameraController Prototypes
The Photo Library framework is not included in the prototype collection for version 0.30 of the tool chain, so you'll need to dump it directly from the iPhone to begin using the camera controller. The CameraController.h prototype file can be generated using Steve Nygard's class-dump tool, available at http://www.codethecode.com/projects/class-dump. To dump the contents of the Photo Library framework, use the copy of the iPhone's libraries you copied over in Chapter 2:
$ class-dump /usr/local/share/iphone-filesystem\
/System/Library/Frameworks/PhotoLibrary.framework/PhotoLibrary
This will dump all of the classes in the framework, but you'll only need one: the CameraController class. Sort through the output of class-dump to find the interface declaration. Place its contents in the file /usr/local/arm-apple-darwin/include/PhotoLibrary/CameraController.h ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.