46 lines
1.1 KiB
Rust
46 lines
1.1 KiB
Rust
//! Scan for a barcode or QR code from the default camera.
|
|
|
|
use std::{
|
|
io::Cursor,
|
|
time::{Duration, SystemTime},
|
|
};
|
|
|
|
use keyfork_zbar::{image::Image, image_scanner::ImageScanner};
|
|
|
|
use image::io::Reader as ImageReader;
|
|
use v4l::{
|
|
buffer::Type,
|
|
io::{traits::CaptureStream, userptr::Stream},
|
|
Device,
|
|
};
|
|
|
|
fn main() -> Result<(), Box<dyn std::error::Error>> {
|
|
let device = Device::new(0)?;
|
|
|
|
let mut stream = Stream::with_buffers(&device, Type::VideoCapture, 4)?;
|
|
let start = SystemTime::now();
|
|
let mut scanner = ImageScanner::new();
|
|
|
|
while SystemTime::now()
|
|
.duration_since(start)
|
|
.unwrap_or(Duration::from_secs(0))
|
|
< Duration::from_secs(30)
|
|
{
|
|
let (buffer, _) = stream.next()?;
|
|
let image = Image::from(
|
|
ImageReader::new(Cursor::new(buffer))
|
|
.with_guessed_format()?
|
|
.decode()?,
|
|
);
|
|
|
|
if let Some(symbol) = scanner.scan_image(&image).get(0) {
|
|
println!("{}", String::from_utf8_lossy(symbol.data()));
|
|
return Ok(());
|
|
}
|
|
}
|
|
|
|
println!("Could not find a QR code");
|
|
|
|
Ok(())
|
|
}
|