From 66fc53d30fc53cf139b44a74b702e936de049755 Mon Sep 17 00:00:00 2001
From: Joakim Hulthe <joakim@hulthe.net>
Date: Thu, 14 Oct 2021 23:50:11 +0200
Subject: [PATCH] Initial Commit

---
 .gitignore  |   1 +
 Cargo.lock  | 550 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml  |   9 +
 src/main.rs |  56 ++++++
 4 files changed, 616 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 src/main.rs

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
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diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..40155db
--- /dev/null
+++ b/Cargo.lock
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..88bdbf9
--- /dev/null
+++ b/Cargo.toml
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diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..198e1b4
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,56 @@
+use clap::Clap;
+use image::imageops::overlay;
+use image::imageops::FilterType;
+use image::io::Reader as ImageReader;
+use image::{DynamicImage, ImageOutputFormat};
+use std::path::PathBuf;
+
+#[derive(Clap)]
+struct Opt {
+    #[clap(short, long)]
+    input: PathBuf,
+
+    #[clap(short, long)]
+    output: PathBuf,
+
+    #[clap(short, long)]
+    stamp: Option<PathBuf>,
+
+    #[clap(short, long, default_value = "64")]
+    blur: u32,
+}
+
+fn main() -> anyhow::Result<()> {
+    let opt = Opt::parse();
+    let img = ImageReader::open(&opt.input)?.decode()?;
+    let (w, h) = dimensions(&img);
+    let img = img.resize(w / opt.blur, h / opt.blur, FilterType::Triangle);
+    let mut img = img.resize(w, h, FilterType::Nearest);
+
+    if let Some(stamp) = opt.stamp {
+        let stamp = ImageReader::open(&stamp)?.decode()?;
+        let (sw, sh) = dimensions(&stamp);
+        overlay(&mut img, &stamp, (w - sw) / 2, (h - sh) / 2);
+    }
+
+    let mut output = std::fs::File::create(opt.output)?;
+    img.write_to(&mut output, ImageOutputFormat::Png)?;
+
+    Ok(())
+}
+
+// No idea why this isn't a method of DynamicImage
+fn dimensions(img: &DynamicImage) -> (u32, u32) {
+    match img {
+        DynamicImage::ImageLuma8(img) => img.dimensions(),
+        DynamicImage::ImageLumaA8(img) => img.dimensions(),
+        DynamicImage::ImageRgb8(img) => img.dimensions(),
+        DynamicImage::ImageRgba8(img) => img.dimensions(),
+        DynamicImage::ImageBgr8(img) => img.dimensions(),
+        DynamicImage::ImageBgra8(img) => img.dimensions(),
+        DynamicImage::ImageLuma16(img) => img.dimensions(),
+        DynamicImage::ImageLumaA16(img) => img.dimensions(),
+        DynamicImage::ImageRgb16(img) => img.dimensions(),
+        DynamicImage::ImageRgba16(img) => img.dimensions(),
+    }
+}