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visionkit/
barcode.rs

1use core::ffi::c_char;
2use core::ptr;
3
4use crate::error::VisionKitError;
5use crate::ffi;
6use crate::private::{error_from_status, parse_area_support_info_ptr};
7use crate::support::AreaSupportInfo;
8
9/// Wraps the VisionKit barcode area.
10pub struct Barcode;
11
12impl Barcode {
13    /// Returns VisionKit availability metadata for this area.
14    pub fn support_info() -> Result<AreaSupportInfo, VisionKitError> {
15        let mut support_json: *mut c_char = ptr::null_mut();
16        let mut err_msg: *mut c_char = ptr::null_mut();
17        let status =
18            unsafe { ffi::barcode::vk_barcode_support_json(&mut support_json, &mut err_msg) };
19        if status == ffi::status::OK {
20            unsafe { parse_area_support_info_ptr(support_json, "Barcode support info") }
21        } else {
22            Err(unsafe { error_from_status(status, err_msg) })
23        }
24    }
25
26    /// Returns whether this VisionKit area is available on the current platform.
27    pub fn is_available_on_current_platform() -> Result<bool, VisionKitError> {
28        Ok(Self::support_info()?.available_on_current_platform)
29    }
30}