devela::_dep::sdl3::sys::camera

Function SDL_GetCameraPermissionState

pub unsafe extern "C" fn SDL_GetCameraPermissionState(
    camera: *mut SDL_Camera,
) -> i32
Available on crate feature dep_sdl3 only.
Expand description

Query if camera access has been approved by the user.

Cameras will not function between when the device is opened by the app and when the user permits access to the hardware. On some platforms, this presents as a popup dialog where the user has to explicitly approve access; on others the approval might be implicit and not alert the user at all.

This function can be used to check the status of that approval. It will return 0 if still waiting for user response, 1 if the camera is approved for use, and -1 if the user denied access.

Instead of polling with this function, you can wait for a [SDL_EVENT_CAMERA_DEVICE_APPROVED] (or [SDL_EVENT_CAMERA_DEVICE_DENIED]) event in the standard SDL event loop, which is guaranteed to be sent once when permission to use the camera is decided.

If a camera is declined, there’s nothing to be done but call SDL_CloseCamera() to dispose of it.

§Parameters

  • camera: the opened camera device to query.

§Return value

Returns -1 if user denied access to the camera, 1 if user approved access, 0 if no decision has been made yet.

§Thread safety

It is safe to call this function from any thread.

§Availability

This function is available since SDL 3.2.0.

§See also