adjust benchmark sample count

benches/dithering.rs

@@ -3,14 +3,17 @@ use image::{ImageReader, RgbImage};
 use pi_frame_server::dither::{DitherMethod, DitheredImage, Palette};
 
 fn criterion_benchmark(c: &mut Criterion) {
+    let mut group = c.benchmark_group("dithering_benchmark");
+
     let sample_file = "sample_0.tiff";
     let image: RgbImage = ImageReader::open(format!("samples/{sample_file}"))
         .expect("file exists")
         .decode()
         .expect("file is valid")
         .into_rgb8();
+    group.sample_size(20);
 
-    c.bench_with_input(BenchmarkId::new("dither", "sample_0"), &image, |b, i| {
+    group.bench_with_input(BenchmarkId::new("dither", "sample_0"), &image, |b, i| {
         b.iter(|| {
             let mut method = DitherMethod::Atkinson.get_ditherer();
             let mut result = DitheredImage::new(

src/api.rs

@@ -22,12 +22,12 @@ pub enum ApiError {
 }
 
 #[derive(Clone)]
-pub struct Context {
+pub struct AppState {
     display_channel: Sender<DisplaySetCommand>,
     display_task: Arc<JoinHandle<()>>,
 }
 
-impl Context {
+impl AppState {
     #[must_use]
     pub fn new(disp: Box<dyn EInkPanel + Send>) -> Self {
         let (tx, rx) = mpsc::channel(2);
@@ -86,7 +86,7 @@ pub async fn display_task(
 /// API routes for axum
 /// Start with the basics: Send an image, crop it, dither, and upload.
 /// we defer the upload to a separate task.
-pub fn router() -> Router<Context> {
+pub fn router() -> Router<AppState> {
     Router::new()
         .route("/setimage", post(set_image))
         .route("/preview", post(preview_image))
@@ -149,7 +149,7 @@ where
 
 #[instrument(skip(ctx))]
 async fn set_image(
-    State(ctx): State<Context>,
+    State(ctx): State<AppState>,
     img_req: ImageRequest,
 ) -> Result<impl IntoResponse, AppError> {
     // FIXME: resize image to 800x480 to match the eink panel.

src/main.rs

@@ -80,7 +80,7 @@ async fn main() -> anyhow::Result<()> {
         Command::Serve => {
             let display = FakeEInk {};
 
-            let ctx = api::Context::new(Box::new(display));
+            let ctx = api::AppState::new(Box::new(display));
 
             let app = api::router().with_state(ctx);
             let listener = tokio::net::TcpListener::bind("0.0.0.0:3000").await?;