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use std::{thread::sleep, time::Duration};
use nokhwa::{
pixel_format::{self, RgbFormat},
query,
utils::{ApiBackend, CameraIndex, FrameFormat, RequestedFormat, RequestedFormatType},
Camera,
};
fn main() {
nokhwa::nokhwa_initialize(callback);
let mut args = std::env::args().skip(1);
match args.next().as_deref() {
Some("tryids") => {
let start: u32 = args.next().map(|n| n.parse().unwrap()).unwrap_or(0);
let end: u32 = args.next().map(|n| n.parse().unwrap()).unwrap_or(255);
tryids(start, end);
}
Some("trydev") => match args.next() {
None => {
eprintln!("device path required");
std::process::exit(1);
}
Some(dev) => trydev(&dev),
},
Some("query") => {
cmdquery();
}
None | Some(_) => {
println!("tryids <start> <end>");
println!("\ttry to open video devices with IDs start to end, inclusive on both ends\n");
println!("trydev <path>");
println!("\ttry to open the video device from the full path");
}
}
}
fn callback(success: bool) {
println!("callback: os says: {success}");
}
fn tryids(start: u32, end: u32) {
for idx in start..=end {
let fmt = RequestedFormat::new::<RgbFormat>(RequestedFormatType::None);
match Camera::new(CameraIndex::Index(idx), fmt) {
Err(e) => {
eprintln!("cam [{idx}]: failed to open device: {e}");
}
Ok(cam) => {
let info = cam.info();
println!(
"cam [{idx}]: {} - {}\n\t{}",
info.index(),
info.human_name(),
info.description()
);
}
}
}
}
fn trydev(device: &str) {
let fmt = RequestedFormat::new::<RgbFormat>(RequestedFormatType::None);
match Camera::new(CameraIndex::String(device.to_owned()), fmt) {
Err(e) => {
eprintln!("cam [{device}]: failed to open device: {e}");
}
Ok(cam) => {
let info = cam.info();
println!(
"cam [{device}]: {} - {}\n\t{}",
info.index(),
info.human_name(),
info.description()
);
}
}
}
fn cmdquery() {
let query = match query(ApiBackend::Auto) {
Err(e) => {
eprintln!("failed to query devices: {e}");
std::process::exit(1);
}
Ok(q) => q,
};
for info in query {
println!(
"cam [{}]: {}\n\t{}",
info.index(),
info.human_name(),
info.description()
);
}
}
|
