remove indicatif, add dotenv, write to stdout, gst to v4lsink, usable with ffplay, still some hiccups, not cpu related

examples/live.rs

@@ -1,4 +1,4 @@
-use indicatif::ProgressBar;
+use dotenv::dotenv;
 use std::fs::File;
 use std::io::Write;
 use thermaldecoder::{Frame, Header, HDR_SIZE};
@@ -37,11 +37,27 @@ use thermaldecoder::{Frame, Header, HDR_SIZE};
 // }
 
 fn main() -> anyhow::Result<()> {
+    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"),
+    };
     // get the default Device
-    let device = pcap::Device::lookup()
-        .expect("device lookup failed")
-        .expect("no device available");
+
     println!("Using device {}", device.name);
+    let output = std::env::args()
+        .nth(1)
+        .expect("required output file argument");
+    println!("Using output {}", output);
 
     // Setup Capture
     let mut cap = pcap::Capture::from_device(device)
@@ -52,8 +68,7 @@ fn main() -> anyhow::Result<()> {
 
     // get a packet and print its bytes
     let mut parts = vec![];
-    let pb = ProgressBar::new(1024);
-    let mut out = File::create("output.raw")?;
+    let mut out = File::create(&output)?;
     while let Ok(p) = cap.next_packet() {
         let data = p.data;
         if data.len() != 6972 {
@@ -72,7 +87,6 @@ fn main() -> anyhow::Result<()> {
             };
             if frame.raw.len() == 384 * 288 * 2 {
                 out.write_all(&frame.raw)?;
-                pb.inc(1);
             }
             parts.clear();
         }