IPhone : iPhone camera settings

Is it possible to change the idea of the code below to support AVcam code? The code below takes a pic using UIImage picker and uploads it to a server. I'd like to use the AVCam snap method provided below.

-(void)takePhoto {
UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];
#if TARGET_IPHONE_SIMULATOR
imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
#else
imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
#endif
imagePickerController.editing = YES;
imagePickerController.delegate = (id)self;

[self presentModalViewController:imagePickerController animated:YES];
}

-(void)uploadPhoto {
//upload the image and the title to the web service
[[API sharedInstance] commandWithParams:[NSMutableDictionary dictionaryWithObjectsAndKeys:@"upload", @"command", UIImageJPEGRepresentation(photo.image,70), @"file", fldTitle.text, @"title", nil] onCompletion:^(NSDictionary *json) {
    //completion
    if (![json objectForKey:@"error"]) {
        //success
        [[[UIAlertView alloc]initWithTitle:@"Success!" message:@"Your photo is uploaded" delegate:nil cancelButtonTitle:@"Yay!" otherButtonTitles: nil] show];

    } else {
        //error, check for expired session and if so - authorize the user
        NSString* errorMsg = [json objectForKey:@"error"];
        [UIAlertView error:errorMsg];
        if ([@"Authorization required" compare:errorMsg]==NSOrderedSame) {
            [self performSegueWithIdentifier:@"ShowLogin" sender:nil];
        }
    }
}];
}

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
// Resize the image from the camera
UIImage *scaledImage = [image resizedImageWithContentMode:UIViewContentModeScaleAspectFill bounds:CGSizeMake(photo.frame.size.width, photo.frame.size.height) interpolationQuality:kCGInterpolationHigh];
// Crop the image to a square (yikes, fancy!)
UIImage *croppedImage = [scaledImage croppedImage:CGRectMake((scaledImage.size.width -photo.frame.size.width)/2, (scaledImage.size.height -photo.frame.size.height)/2, photo.frame.size.width, photo.frame.size.height)];
// Show the photo on the screen
photo.image = croppedImage;
[picker dismissModalViewControllerAnimated:NO];
}

AVCam programmatic snap...

- (void)snapStillImage //this is being called on did load
{
dispatch_async([self sessionQueue], ^{
    // Update the orientation on the still image output video connection before capturing.
    [[[self stillImageOutput] connectionWithMediaType:AVMediaTypeVideo] setVideoOrientation:[[(AVCaptureVideoPreviewLayer *)[[self previewView] layer] connection] videoOrientation]];
    // Flash set to Auto for Still Capture
    [PhotoScreen setFlashMode:AVCaptureFlashModeAuto forDevice:[[self videoDeviceInput] device]];
    // Capture a still image.
    [[self stillImageOutput] captureStillImageAsynchronouslyFromConnection:[[self stillImageOutput] connectionWithMediaType:AVMediaTypeVideo] completionHandler:^(CMSampleBufferRef imageDataSampleBuffer, NSError *error) {
        if (imageDataSampleBuffer) //if the data is sampled and buffered etc...
        { 

            NSData *imageData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageDataSampleBuffer];
            UIImage *image = [[UIImage alloc] initWithData:imageData];
            //possibly just import to stream screen lol
            [[[ALAssetsLibrary alloc] init] writeImageToSavedPhotosAlbum:[image CGImage] orientation:(ALAssetOrientation)[image imageOrientation] completionBlock:nil];
            //trying to represent jpeg later
        }

    }];
});
}

Im looking at these lines of code right now from AVCam snap:

NSData *imageData = [AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageDataSampleBuffer];  

Im assuming one would need to:

1. Set the AvcamCapstureStillImageOutput JpegRepresentation property to a UIImageView named photo


2. Upload photo to the sever in the method photo

How can I change the functionality of the code above to support AVCam software? If you have experience taking pictures programmatically please feel free to help come up with the magic to get it done.