How does the iphone camera display graphics? - iphone

I was curious to know how the iphone/ipad/ipod camera show the display screen i.e. once we open up the camera app, how does the app show up the graphics on the display ? How does it paint the content on the display layer/surface? Does it use the GPU for that ?
Any Links on the same would be very useful.
Thanks.

Related

Show camera on imageview

I'm trying to show the camera on ImageView object.
Is this possible?
if not, how can I show the camera without open the default app?
for now I just open it and capture an image with the camera intent.
thanks for help.

How to simulate the UIPrerenderedIcon feature in a custom image

I have an IOS app in which a custom image is loaded in a view. I want the image to have
the same look and feel, the glossyness, roundness that we find on the Iphone/Ipad home screen
for different apps.
How can I get that effect for a custom image ? Is there any api for that ?

customize camera view size on iphone

I want implement camera like Instagram . all photo is Fixed size.
but I can't set UIImagePickerController frame with CGRectMake(0,0,200,200);
how can I change camera's view size?
how can let all photo fixed size?
it's fullscreen now!
need help.3Q
As UIImagePickerController is a standard iOS controller,I don't think it allow to set frame to make it custom sized.But still you can give a look at cameraOverlayView.There is a very small chance you can do something with dis.
camera like instagram usually be implemented with AVFoundation, which is more flexible, and use AVCaptureSession with the camera preview layer for the camera preview size

IPhone UIImagepicker with camera showing camera roll thumbnail like default camera app?

im working in iphone's camera app, using UIImagePicker to launch the camera.
Everything goes well, just a need to use the default controls showed in the camera app in iphone(little thumbnail from the last pic in camera roll and take photo buttons) and its animation(take and send the picture to the left bottom thumbnail), not default in UIImagePicker (cancel and take photo buttons).
How i can do that?
thankz :D
You can't do that. What you should do is present a UIActionSheet and ask if the user wants to get a photo from the Camera or their Photo Albums.
You may try to use the cameraOverlayView property or create your own custom controls duplicating the default controls (hiding the default controls with showsCameraControls = NO).

Is it possible to make persistent full-screen camera like System camera app?

I am building a custom camera app, and would like to have the camera view similar to the native camera app in iPhone. (i.e., picks videos as a non-modal view, stays in the camera view after each video taken. I found the retake and use views unnecessary). Is there any possible way to do it? Thanks.
you can't do it for videos at present, but you can do it for still pictures in OS 3.1. if you search for "takePicture" and "cameraOverlayView" you should find helpful information; you can resize the preview window to be any size you like.