devsugar: Accessing an iPhone camera capture session

Hi Erica, thank you for the example. There is just so few information around there.

I've implemented something similar, but I wanted to trigger a captureStillImageAsynchronouslyFromConnection instead of using a low res frame. The problem is that I get a fuzzy image at the end. Continues autofocus is turned on.
Have you got any idea how to get a clear image, just like UIImagePickerController?

So thank you again for your help.

Hi Erica,

Thanks for whipping up the great demo app. I have a couple of questions

1. on 3GS snap function returns an image size of 480.000000 640.000000 and iPhone4 returns an image size of 720.000000 1280.000000. Those seem so arbitrary, are these related to original pixel size of the camera sensor?

2. While running the demo app, I keep on receiving memory warnings, and it crashes when I try to capture very quickly.
2010-07-23 12:54:26.515 HelloWorld[3731:307] Received memory warning. Level=2
Data Formatters temporarily unavailable, will re-try after a 'continue'.
Unknown error loading shared library "/Developer/usr/lib/libXcodeDebuggerSupport.dylib"


Thanks again for the help!

Devkit? :)

Great job except for this one bit:

[captureOutput setSampleBufferDelegate:self queue:dispatch_get_main_queue()];

Never ever ever ever EVER use the main dispatch queue. Performance will suffer and Apple just plain tells you not to.

Bad Erica, No Cookie :)

Instead, do something like this:

dispatch_queue_t queue = dispatch_queue_create("com.myapp.tasks.grabcameraframes", NULL);
[captureOutput setSampleBufferDelegate:self queue:queue];

When I try to compile it the SDK (4.0) throws 22 errors.

sorry to side track ..but what happened to your devkit?

Thanks a lot for this Erica. :)