I am working on a console app (Actually a library, but designed to be used from console), where I want to be able to enumerate the AVCaptureDevices at runtime. Attempting to do this however, I am noticing that the AVCaptureDevice devices property is never updating. I have some minimal code to reproduce this. Run it with a USB camera plugged in, and as you unplug and replug the camera in the output never changes, and it says there are devices that don't actually exist. Note I am not running this in a UI application, so there is no standard loop. Its just meant to be running from a standard "c" main.
#import <Foundation/Foundation.h>
#import <AVFoundation/AVFoundation.h>
int main(int argc, const char * argv[]) {
@autoreleasepool {
while (true) {
NSArray* captureDevices = [AVCaptureDevice devicesWithMediaType:AVMediaTypeVideo];
for (id device in captureDevices) {
NSString* uniqueIdentifier = [(AVCaptureDevice*)device uniqueID];
NSLog(uniqueIdentifier);
}
usleep(1000000);
}
}
return 0;
}Thanks for any help. I would be ok firing up a message loop in a background thread if I needed to, but I can't guarentee that the user application has a message loop (sorry if terminology is different, I come from windows).
