v4l by rust process, still sudo, endianess reversed

Cargo.lock

@@ -469,6 +469,29 @@ dependencies = [
  "rustc-demangle",
 ]
 
+[[package]]
+name = "bindgen"
+version = "0.65.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfdf7b466f9a4903edc73f95d6d2bcd5baf8ae620638762244d3f60143643cc5"
+dependencies = [
+ "bitflags 1.3.2",
+ "cexpr",
+ "clang-sys",
+ "lazy_static",
+ "lazycell",
+ "log",
+ "peeking_take_while",
+ "prettyplease",
+ "proc-macro2",
+ "quote",
+ "regex",
+ "rustc-hash",
+ "shlex",
+ "syn 2.0.48",
+ "which",
+]
+
 [[package]]
 name = "bit-set"
 version = "0.5.3"
@@ -645,6 +668,15 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6d43a04d8753f35258c91f8ec639f792891f748a1edbd759cf1dcea3382ad83c"
 
+[[package]]
+name = "cexpr"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6fac387a98bb7c37292057cffc56d62ecb629900026402633ae9160df93a8766"
+dependencies = [
+ "nom",
+]
+
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
@@ -672,6 +704,17 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b0fc239e0f6cb375d2402d48afb92f76f5404fd1df208a41930ec81eda078bea"
 
+[[package]]
+name = "clang-sys"
+version = "1.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67523a3b4be3ce1989d607a828d036249522dd9c1c8de7f4dd2dae43a37369d1"
+dependencies = [
+ "glob",
+ "libc",
+ "libloading 0.8.1",
+]
+
 [[package]]
 name = "clipboard-win"
 version = "5.1.0"
@@ -1084,6 +1127,12 @@ dependencies = [
  "winit",
 ]
 
+[[package]]
+name = "either"
+version = "1.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "11157ac094ffbdde99aa67b23417ebdd801842852b500e395a45a9c0aac03e4a"
+
 [[package]]
 name = "emath"
 version = "0.26.2"
@@ -1473,6 +1522,12 @@ dependencies = [
  "xml-rs",
 ]
 
+[[package]]
+name = "glob"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2fabcfbdc87f4758337ca535fb41a6d701b65693ce38287d856d1674551ec9b"
+
 [[package]]
 name = "glow"
 version = "0.13.1"
@@ -1806,6 +1861,12 @@ version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
+[[package]]
+name = "lazycell"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "830d08ce1d1d941e6b30645f1a0eb5643013d835ce3779a5fc208261dbe10f55"
+
 [[package]]
 name = "libc"
 version = "0.2.153"
@@ -2289,6 +2350,12 @@ dependencies = [
  "rusticata-macros",
 ]
 
+[[package]]
+name = "peeking_take_while"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "19b17cddbe7ec3f8bc800887bab5e717348c95ea2ca0b1bf0837fb964dc67099"
+
 [[package]]
 name = "percent-encoding"
 version = "2.3.1"
@@ -2385,6 +2452,16 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e8cf8e6a8aa66ce33f63993ffc4ea4271eb5b0530a9002db8455ea6050c77bfa"
 
+[[package]]
+name = "prettyplease"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a41cf62165e97c7f814d2221421dbb9afcbcdb0a88068e5ea206e19951c2cbb5"
+dependencies = [
+ "proc-macro2",
+ "syn 2.0.48",
+]
+
 [[package]]
 name = "proc-macro-crate"
 version = "1.3.1"
@@ -2717,6 +2794,12 @@ dependencies = [
  "digest",
 ]
 
+[[package]]
+name = "shlex"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
+
 [[package]]
 name = "signal-hook-registry"
 version = "1.4.1"
@@ -2907,6 +2990,7 @@ dependencies = [
  "png",
  "pyo3",
  "serde",
+ "v4l",
 ]
 
 [[package]]
@@ -3143,6 +3227,26 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "v4l"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d8fbfea44a46799d62c55323f3c55d06df722fbe577851d848d328a1041c3403"
+dependencies = [
+ "bitflags 1.3.2",
+ "libc",
+ "v4l2-sys-mit",
+]
+
+[[package]]
+name = "v4l2-sys-mit"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6779878362b9bacadc7893eac76abe69612e8837ef746573c4a5239daf11990b"
+dependencies = [
+ "bindgen",
+]
+
 [[package]]
 name = "version_check"
 version = "0.9.4"
@@ -3484,6 +3588,18 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "which"
+version = "4.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87ba24419a2078cd2b0f2ede2691b6c66d8e47836da3b6db8265ebad47afbfc7"
+dependencies = [
+ "either",
+ "home",
+ "once_cell",
+ "rustix 0.38.31",
+]
+
 [[package]]
 name = "widestring"
 version = "1.0.2"

Cargo.toml

@@ -22,3 +22,4 @@ pcap-parser = { version = "0.14.1", features = ["data"] }
 png = "0.17.10"
 pyo3 = { version = "0.20.0", "features" = ["extension-module"] }
 serde = { version = "1.0.193", features = ["derive", "serde_derive", "alloc"] }
+v4l = "0.14.0"

examples/live.rs

@@ -1,40 +1,7 @@
 use dotenv::dotenv;
-use std::fs::File;
 use std::io::Write;
-use thermaldecoder::{Frame, Header, HDR_SIZE};
+use thermaldecoder::{Header, HDR_SIZE};
-
+use v4l::video::Output;
-// fn main() -> Result<(), eframe::Error> {
-//     env_logger::init(); // Log to stderr (if you run with `RUST_LOG=debug`).
-//     let options = eframe::NativeOptions {
-//         viewport: egui::ViewportBuilder::default().with_inner_size([600.0, 800.0]),
-//         ..Default::default()
-//     };
-//     let (sender, receiver) = crossbeam::channel::unbounded();
-//     eframe::run_native(
-//         "Image Viewer",
-//         options,
-//         Box::new(|cc| {
-//             // This gives us image support:
-//             egui_extras::install_image_loaders(&cc.egui_ctx);
-//             Box::<MyApp>::default()
-//         }),
-//     )
-// }
-
-// #[derive(Default)]
-// struct MyApp {}
-
-// impl eframe::App for MyApp {
-//     fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
-//         egui::CentralPanel::default().show(ctx, |ui| {
-//             egui::ScrollArea::both().show(ui, |ui| {
-//                 ui.add(egui::Image::new().rounding(10.0));
-
-//                 ui.image(egui::include_image!("ferris.svg"));
-//             });
-//         });
-//     }
-// }
 
 fn main() -> anyhow::Result<()> {
     dotenv().ok();
@@ -57,7 +24,20 @@ fn main() -> anyhow::Result<()> {
     let output = std::env::args()
         .nth(1)
         .expect("required output file argument");
-    println!("Using output {}", output);
+    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)?;
 
     // Setup Capture
     let mut cap = pcap::Capture::from_device(device)
@@ -68,13 +48,12 @@ fn main() -> anyhow::Result<()> {
 
     // get a packet and print its bytes
     const PACKET_LEN: usize = 6972;
-    const FRAME_LEN: usize = 288 * 384 * 2;
+    const FRAME_LEN: usize = WIDTH * HEIGHT * 2;
     let mut frame = [0u8; FRAME_LEN];
     let mut len = 0;
-    let mut out = File::create(&output)?;
     while let Ok(p) = cap.next_packet() {
         let data = p.data;
-        if data.len() != 6972 {
+        if data.len() != PACKET_LEN {
             continue;
         }
         let data = &data[0x2a..];

run_live.sh

@@ -6,9 +6,8 @@ set -e
 # Python works but stutters
 #sudo ./venv/bin/python ./decode.py --live
 cargo build --release --example live
-sudo ./target/release/examples/live /dev/stdout | gst-launch-1.0 filesrc location=/dev/stdin \
+TARGET=./target/release/examples/live
- ! rawvideoparse use_sink_caps=false height=384 width=288 format=gray16-le \
+# setcap does not work yet (EPERM on socket AF_PACKET)
- ! videoconvertscale \
+# sudo setcap cap_net_raw,cap_net_admin=eip $TARGET
- ! v4l2sink device=/dev/video0
+#strace -f -o live.strace $TARGET /dev/video0
-#	! videoconvertscale
+sudo $TARGET /dev/video0
-