adjust build.sh commands

Cargo.lock

@@ -119,52 +119,6 @@ version = "0.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "96d30a06541fbafbc7f82ed10c06164cfbd2c401138f6addd8404629c4b16711"
 
-[[package]]
-name = "askama"
-version = "0.12.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b79091df18a97caea757e28cd2d5fda49c6cd4bd01ddffd7ff01ace0c0ad2c28"
-dependencies = [
- "askama_derive",
- "askama_escape",
- "humansize",
- "num-traits",
- "percent-encoding",
- "serde",
- "serde_json",
-]
-
-[[package]]
-name = "askama_derive"
-version = "0.12.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "19fe8d6cb13c4714962c072ea496f3392015f0989b1a2847bb4b2d9effd71d83"
-dependencies = [
- "askama_parser",
- "basic-toml",
- "mime",
- "mime_guess",
- "proc-macro2",
- "quote",
- "serde",
- "syn",
-]
-
-[[package]]
-name = "askama_escape"
-version = "0.10.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "619743e34b5ba4e9703bba34deac3427c72507c7159f5fd030aea8cac0cfe341"
-
-[[package]]
-name = "askama_parser"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "acb1161c6b64d1c3d83108213c2a2533a342ac225aabd0bda218278c2ddb00c0"
-dependencies = [
- "nom",
-]
-
 [[package]]
 name = "async-trait"
 version = "0.1.81"
@@ -294,15 +248,6 @@ dependencies = [
  "rustc-demangle",
 ]
 
-[[package]]
-name = "basic-toml"
-version = "0.1.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "823388e228f614e9558c6804262db37960ec8821856535f5c3f59913140558f8"
-dependencies = [
- "serde",
-]
-
 [[package]]
 name = "bit_field"
 version = "0.10.2"
@@ -772,15 +717,6 @@ version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "df3b46402a9d5adb4c86a0cf463f42e19994e3ee891101b1841f30a545cb49a9"
 
-[[package]]
-name = "humansize"
-version = "2.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6cb51c9a029ddc91b07a787f1d86b53ccfa49b0e86688c946ebe8d3555685dd7"
-dependencies = [
- "libm",
-]
-
 [[package]]
 name = "hyper"
 version = "1.4.1"
@@ -962,12 +898,6 @@ dependencies = [
  "once_cell",
 ]
 
-[[package]]
-name = "libm"
-version = "0.2.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4ec2a862134d2a7d32d7983ddcdd1c4923530833c9f2ea1a44fc5fa473989058"
-
 [[package]]
 name = "linux-embedded-hal"
 version = "0.4.0"
@@ -1026,16 +956,6 @@ version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0e7465ac9959cc2b1404e8e2367b43684a6d13790fe23056cc8c6c5a6b7bcb94"
 
-[[package]]
-name = "matrixmultiply"
-version = "0.3.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7574c1cf36da4798ab73da5b215bbf444f50718207754cb522201d78d1cd0ff2"
-dependencies = [
- "autocfg",
- "rawpointer",
-]
-
 [[package]]
 name = "maybe-rayon"
 version = "0.1.1"
@@ -1076,13 +996,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6877bb514081ee2a7ff5ef9de3281f14a4dd4bceac4c09388074a6b5df8a139a"
 
 [[package]]
-name = "mime_guess"
-version = "2.0.5"
+name = "minijinja"
+version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7c44f8e672c00fe5308fa235f821cb4198414e1c77935c1ab6948d3fd78550e"
+checksum = "45f7e8e35b6c7b169bf40b0176d2c79291ab8ee53290b84e0668ab21d841aa9d"
 dependencies = [
- "mime",
- "unicase",
+ "serde",
 ]
 
 [[package]]
@@ -1136,19 +1055,6 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8d5439c4ad607c3c23abf66de8c8bf57ba8adcd1f129e699851a6e43935d339d"
 
-[[package]]
-name = "ndarray"
-version = "0.15.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "adb12d4e967ec485a5f71c6311fe28158e9d6f4bc4a447b474184d0f91a8fa32"
-dependencies = [
- "matrixmultiply",
- "num-complex",
- "num-integer",
- "num-traits",
- "rawpointer",
-]
-
 [[package]]
 name = "new_debug_unreachable"
 version = "1.0.6"
@@ -1228,15 +1134,6 @@ dependencies = [
  "num-traits",
 ]
 
-[[package]]
-name = "num-complex"
-version = "0.4.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "73f88a1307638156682bada9d7604135552957b7818057dcef22705b4d509495"
-dependencies = [
- "num-traits",
-]
-
 [[package]]
 name = "num-derive"
 version = "0.4.2"
@@ -1404,20 +1301,17 @@ name = "pi-frame-server"
 version = "0.1.0"
 dependencies = [
  "anyhow",
- "askama",
  "axum",
  "axum-macros",
  "clap",
  "epd-waveshare",
  "image",
  "linux-embedded-hal",
- "ndarray",
- "num-traits",
+ "minijinja",
  "palette",
- "rayon",
- "rgb",
  "thiserror",
  "tokio",
+ "tower-http",
  "tracing",
  "tracing-subscriber",
 ]
@@ -1610,12 +1504,6 @@ dependencies = [
  "rgb",
 ]
 
-[[package]]
-name = "rawpointer"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60a357793950651c4ed0f3f52338f53b2f809f32d83a07f72909fa13e4c6c1e3"
-
 [[package]]
 name = "rayon"
 version = "1.10.0"
@@ -2039,6 +1927,23 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "tower-http"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e9cd434a998747dd2c4276bc96ee2e0c7a2eadf3cae88e52be55a05fa9053f5"
+dependencies = [
+ "bitflags 2.6.0",
+ "bytes",
+ "http",
+ "http-body",
+ "http-body-util",
+ "pin-project-lite",
+ "tower-layer",
+ "tower-service",
+ "tracing",
+]
+
 [[package]]
 name = "tower-layer"
 version = "0.3.2"
@@ -2118,15 +2023,6 @@ dependencies = [
  "thiserror",
 ]
 
-[[package]]
-name = "unicase"
-version = "2.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f7d2d4dafb69621809a81864c9c1b864479e1235c0dd4e199924b9742439ed89"
-dependencies = [
- "version_check",
-]
-
 [[package]]
 name = "unicode-ident"
 version = "1.0.12"

Cargo.toml

@@ -7,19 +7,16 @@ edition = "2021"
 
 [dependencies]
 anyhow = "1.0.86"
-askama = { version = "0.12.1", features = ["serde-json", "with-axum"] }
 axum = { version = "0.7.5", features = ["multipart"] }
 axum-macros = "0.4.1"
 clap = { version = "4.5.7", features = ["derive"] }
 epd-waveshare = { git = "https://github.com/caemor/epd-waveshare.git"}
 image = "0.25.1"
 linux-embedded-hal = { version = "0.4.0"}
-ndarray = "0.15.6"
-num-traits = "0.2.19"
+minijinja = "2.1.0"
 palette = "0.7.6"
-rayon = "1.10.0"
-rgb = "0.8.40"
 thiserror = "1.0.63"
 tokio = { version = "1.38.1", features = ["full"] }
+tower-http = { version = "0.5.2", features = ["trace"] }
 tracing = "0.1.40"
 tracing-subscriber = "0.3.18"

build.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 set +x
-cross build --target aarch64-unknown-linux-gnu --release --features eink
+cross build --target aarch64-unknown-linux-gnu --release
 rsync -aczP target/aarch64-unknown-linux-gnu/release/pi-frame-server 192.168.0.185:
 # scp target/aarch64-unknown-linux-gnu/debug/pi-frame-server 192.168.0.186:
-ssh 192.168.0.185 ./pi-frame-server show
+ssh 192.168.0.185 ./pi-frame-server serve

src/api.rs

@@ -1,12 +1,17 @@
+use crate::imageproc::{DiffusionMatrix, Ditherer, EInkImage, ErrorDiffusionDither};
 use axum::extract::Multipart;
 use axum::http::StatusCode;
 use axum::response::IntoResponse;
 use axum::{extract::State, response::Response, routing::post, Router};
-use image::ImageReader;
+use image::{ImageReader, RgbImage};
 use std::io::Cursor;
+use std::time::Duration;
+use tracing::{error, info, debug, instrument};
 
 use crate::display::EInkPanel;
-use std::sync::{Arc, Mutex};
+use std::sync::Arc;
+use tokio::sync::mpsc::{self, Receiver, Sender};
+use tokio::task::JoinHandle;
 
 pub enum ImageFormFields {
     DitherType,
@@ -15,17 +20,42 @@ pub enum ImageFormFields {
 
 #[derive(Clone)]
 pub struct Context {
-    display: Arc<Mutex<Box<dyn EInkPanel + Send>>>,
+    display_channel: Sender<DisplaySetCommand>,
+    display_task: Arc<JoinHandle<()>>,
 }
+
 impl Context {
     #[must_use]
-    pub fn new(w: Box<dyn EInkPanel + Send>) -> Self {
+    pub fn new(disp: Box<dyn EInkPanel + Send>) -> Self {
+        let (tx, rx) = mpsc::channel(2);
+        let task = tokio::spawn(display_task(rx, disp));
         Self {
-            display: Arc::new(Mutex::new(w)),
+            display_channel: tx,
+            display_task: Arc::new(task),
         }
     }
 }
 
+
+#[derive(Debug)]
+pub struct DisplaySetCommand {
+    img: Box<EInkImage>,
+}
+#[instrument(skip_all)]
+pub async fn display_task(
+    mut rx: Receiver<DisplaySetCommand>,
+    mut display: Box<dyn EInkPanel + Send>,
+) {
+    while let Some(cmd) = rx.recv().await {
+        info!("Got a display set command");
+        let raw_buf = cmd.img.into_display_buffer();
+        if let Err(e) = display.display(&raw_buf) {
+            error!("Error displaying command {e}");
+        }
+        info!("Done setting display");
+    }
+}
+
 // Make our own error that wraps `anyhow::Error`.
 struct AppError(anyhow::Error);
 
@@ -58,6 +88,7 @@ pub fn router() -> Router<Context> {
     Router::new().route("/setimage", post(set_image))
 }
 
+#[instrument(skip(ctx))]
 async fn set_image(
     State(ctx): State<Context>,
     mut parts: Multipart,
@@ -65,13 +96,21 @@ async fn set_image(
     while let Some(field) = parts.next_field().await? {
         let name = field.name().expect("fields always have names").to_string();
         let data = field.bytes().await?;
-        println!("Length of `{}` is {} bytes", name, data.len());
+        debug!("Length of `{}` is {} bytes", name, data.len());
         if &name == "image" {
             let reader = ImageReader::new(Cursor::new(data))
                 .with_guessed_format()
                 .expect("Cursor io never fails");
-            println!("Guessed format: {:?}", reader.format());
-            let _image = reader.decode()?;
+            debug!("Guessed format: {:?}", reader.format());
+
+            let image = reader.decode()?;
+            let mut buf = EInkImage::new(800, 480);
+            let dither = ErrorDiffusionDither::new(DiffusionMatrix::Atkinson);
+            dither.dither(&image.into(), &mut buf);
+            let cmd = DisplaySetCommand {
+                img: Box::new(buf),
+            };
+            ctx.display_channel.send_timeout(cmd, Duration::from_secs(10)).await?;
         }
     }
     Ok(())

src/display.rs

@@ -2,8 +2,8 @@ use epd_waveshare::{epd7in3f::Epd7in3f, prelude::WaveshareDisplay};
 use linux_embedded_hal::spidev::SpiModeFlags;
 use linux_embedded_hal::spidev::SpidevOptions;
 use linux_embedded_hal::{CdevPin, Delay, SpidevDevice};
-use tracing::debug_span;
-use tracing::{info, instrument, error, warn, debug};
+use tracing::instrument;
+use tracing::{debug, debug_span, warn};
 
 use anyhow::Result;
 use linux_embedded_hal::gpio_cdev::{Chip, LineRequestFlags};
@@ -12,7 +12,6 @@ pub trait EInkPanel {
     fn display(&mut self, buf: &[u8]) -> Result<()>;
 }
 
-
 pub struct Wrapper {
     spi: SpidevDevice,
     gpiochip: Chip,
@@ -64,9 +63,8 @@ impl Wrapper {
 }
 
 impl EInkPanel for Wrapper {
+    #[instrument(skip_all)]
     fn display(&mut self, buf: &[u8]) -> Result<()> {
-        let span = debug_span!("display");
-        let _enter = span.enter();
         self.panel
             .update_and_display_frame(&mut self.spi, buf, &mut self.delay)?;
         debug!("Finished updating frame");
@@ -78,8 +76,9 @@ impl EInkPanel for Wrapper {
 
 pub struct FakeEInk();
 impl EInkPanel for FakeEInk {
-    fn display(&mut self, buf: &[u8]) -> Result<()> {
+    fn display(&mut self, _buf: &[u8]) -> Result<()> {
         // Do nothing.
+        warn!("Fake display was called");
         Ok(())
     }
 }

src/errors.rs

@@ -1 +1 @@
-use thiserror;
+

src/imageproc.rs

@@ -1,5 +1,5 @@
 use image::RgbImage;
-use tracing::{info, debug, instrument};
+use tracing::instrument;
 
 use image::Rgb as imgRgb;
 use palette::color_difference::Ciede2000;

src/main.rs

@@ -5,6 +5,7 @@ pub mod imageproc;
 
 use crate::display::{EInkPanel, FakeEInk, Wrapper};
 use crate::imageproc::{DiffusionMatrix, Ditherer, EInkImage, ErrorDiffusionDither};
+use tracing::info;
 use clap::{Parser, Subcommand};
 use image::RgbImage;
 
@@ -50,11 +51,13 @@ async fn main() -> anyhow::Result<()> {
     }
 
     if matches!(cli.command, Command::Serve) {
-        let display = FakeEInk {};
+        let display = Wrapper::new()?;
+
         let ctx = api::Context::new(Box::new(display));
 
         let app = api::router().with_state(ctx);
         let listener = tokio::net::TcpListener::bind("0.0.0.0:3000").await?;
+        info!("Listening on 0.0.0.0:3000");
         axum::serve(listener, app).await?;
     }
 

test.hurl

@@ -1,3 +1,3 @@
-POST http://localhost:3000/setimage
+POST http://192.168.0.185:3000/setimage
 [MultipartFormData]
 image: file,image.png;