2024-02-17 15:43:20 +02:00
|
|
|
use dotenv::dotenv;
|
2024-02-16 00:41:39 +02:00
|
|
|
use std::io::Write;
|
2024-02-17 16:55:53 +02:00
|
|
|
use thermaldecoder::{Header, HDR_SIZE};
|
|
|
|
use v4l::video::Output;
|
2024-02-16 00:41:39 +02:00
|
|
|
|
|
|
|
fn main() -> anyhow::Result<()> {
|
2024-02-17 15:43:20 +02:00
|
|
|
dotenv().ok();
|
|
|
|
let device = match std::env::var("THERMALCAM_IFACE=enp1s0f0") {
|
|
|
|
Ok(d) => {
|
|
|
|
let device = pcap::Device::list()
|
|
|
|
.expect("device list failed")
|
|
|
|
.into_iter()
|
|
|
|
.find(|x| x.name == d)
|
|
|
|
.expect(&format!("could not find device {}", d));
|
|
|
|
device
|
|
|
|
}
|
|
|
|
Err(_) => pcap::Device::lookup()
|
|
|
|
.expect("device lookup failed")
|
|
|
|
.expect("no device available"),
|
|
|
|
};
|
2024-02-16 00:41:39 +02:00
|
|
|
// get the default Device
|
2024-02-17 15:43:20 +02:00
|
|
|
|
2024-02-16 00:41:39 +02:00
|
|
|
println!("Using device {}", device.name);
|
2024-02-17 15:43:20 +02:00
|
|
|
let output = std::env::args()
|
|
|
|
.nth(1)
|
|
|
|
.expect("required output file argument");
|
2024-02-17 16:55:53 +02:00
|
|
|
println!("Using output v4l2loopback device {}", output);
|
|
|
|
|
|
|
|
const WIDTH: usize = 288;
|
|
|
|
const HEIGHT: usize = 384;
|
|
|
|
|
|
|
|
let mut out = v4l::Device::with_path(output)?;
|
|
|
|
// To find the fourcc code, use v4l2-ctl --list-formats-out /dev/video0
|
|
|
|
// (or read the source :)
|
|
|
|
let format = v4l::Format::new(
|
|
|
|
WIDTH as u32,
|
|
|
|
HEIGHT as u32,
|
|
|
|
v4l::format::FourCC::new(b"Y16 "),
|
|
|
|
);
|
|
|
|
Output::set_format(&out, &format)?;
|
2024-02-16 00:41:39 +02:00
|
|
|
|
|
|
|
// Setup Capture
|
|
|
|
let mut cap = pcap::Capture::from_device(device)
|
|
|
|
.unwrap()
|
|
|
|
.immediate_mode(true)
|
|
|
|
.open()
|
|
|
|
.unwrap();
|
|
|
|
|
|
|
|
// get a packet and print its bytes
|
2024-02-17 15:56:05 +02:00
|
|
|
const PACKET_LEN: usize = 6972;
|
2024-02-17 16:55:53 +02:00
|
|
|
const FRAME_LEN: usize = WIDTH * HEIGHT * 2;
|
2024-02-17 15:56:05 +02:00
|
|
|
let mut frame = [0u8; FRAME_LEN];
|
|
|
|
let mut len = 0;
|
2024-02-16 00:41:39 +02:00
|
|
|
while let Ok(p) = cap.next_packet() {
|
|
|
|
let data = p.data;
|
2024-02-17 16:55:53 +02:00
|
|
|
if data.len() != PACKET_LEN {
|
2024-02-16 00:41:39 +02:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
let data = &data[0x2a..];
|
|
|
|
let header = match Header::read(data) {
|
|
|
|
Ok(header) => header,
|
|
|
|
Err(_) => continue,
|
|
|
|
};
|
|
|
|
let data = &data[HDR_SIZE..];
|
2024-02-17 15:56:05 +02:00
|
|
|
if (header.part == 0 && len > 0)
|
|
|
|
// do not write out of bounds - would panic, instead just skip
|
|
|
|
|| (data.len() + len > FRAME_LEN)
|
|
|
|
{
|
|
|
|
if len == FRAME_LEN {
|
|
|
|
out.write_all(&frame[..])?;
|
2024-02-16 00:41:39 +02:00
|
|
|
}
|
2024-02-17 15:56:05 +02:00
|
|
|
len = 0;
|
2024-02-16 00:41:39 +02:00
|
|
|
}
|
2024-02-17 15:56:05 +02:00
|
|
|
frame[len..len + data.len()].copy_from_slice(data);
|
|
|
|
len += data.len();
|
2024-02-16 00:41:39 +02:00
|
|
|
}
|
|
|
|
Ok(())
|
|
|
|
}
|