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use anyhow::{anyhow, Result};
use sshcamera::v4l2::{Device as V4l2, Field};
use sshcamera::v4l2cairo::V4l2Cairo;
use sshcamera::gtk;
use sshcamera::v4l2abst::{CaptStream, RemoteCam};
use sshcamera::io::RWBundle;
use gtk4::glib::ExitCode;
use std::env;
use std::io::{self, Read as _, Write as _};
use std::process::{Command, Stdio};
fn main() -> Result<ExitCode>{
let mut args = env::args();
if args.next() == None{
return Err(anyhow!("arg0 is not present??"));
}
let Some(arg1) = args.next() else{
return Err(anyhow!("Give me args"));
};
if args.len() == 0{
let v = V4l2::open(arg1)?;
// TODO: It should be better.
let mut c = v.captstream_builder()?
.set_pixelformat("MJPG".into())
//.set_pixelformat("YUYV".into())
.set_field(Field::None)
.build()?;
assert!(["YUYV", "MJPG"].contains(&c.pixelformat().as_str()));
assert!(c.field() == Field::None);
let mut io = RWBundle(io::stdin(), io::stdout());
loop{
CaptStream::next(&mut c, |frame|{
frame.serialize(&mut io)?;
io.flush()?;
let mut rb = [0];
io.read_exact(&mut rb)?;
if rb[0] != 0x2e{
return Err(anyhow!("protocol error"));
}
Ok(())
})??;
}
}else{
let child = Command::new(arg1)
.args(args)
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.spawn()?;
let io = RWBundle(child.stdout.unwrap(), child.stdin.unwrap());
let v2c = V4l2Cairo::new(RemoteCam::new(io));
gtk::main(v2c)
}
}
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