GraphicsMagick binding for Rust.
Require graphicsmagick, libgraphicsmagick, clang and libclang.
In Deepin/Ubuntu/Debian, you can install these by:
bash
sudo apt install graphicsmagick libgraphicsmagick1-dev
sudo apt install llvm-dev libclang-dev clang
Before build, please check the GraphicsMagickWand-config is executable,
or specify the environment variable GRAPHICS_MAGICK_WAND_CONFIG correctly.
Support and tested GraphicsMagick version: 1.3.20 ~ 1.3.36.
There are some version flag in the documentation, like gm_v_1_3_26, meaning that your GraphicsMagick version must
be greater than or equal to 1.3.26 to used this method.
GraphicsMagick supports OpenMP if you are compiling with OpenMP-enabled cc, you can set the environment variable
OMP_NUM_THREADS to limit the number of threads or set OMP_DISPLAY_ENV=TRUE to display the OpenMP info when
running the application.
Read http://www.graphicsmagick.org/OpenMP.html for details.
Simple resize example:
```rust use anyhow::Context; use graphicsmagick::{initialize, types::FilterTypes, wand::MagickWand}; use std::path::PathBuf;
fn main() -> anyhow::Result<()> { // This function should be invoked in the primary (original) thread // of the application's process, and before starting any OpenMP // threads, as part of program initialization. initialize();
let path = PathBuf::from(env!("CARGO_MANIFEST_DIR"))
.join("..")
.join("meta")
.join("GraphicsMagick-Logo.webp");
let path = path.to_str().context("get image path failed")?;
let mut mw = MagickWand::new();
mw.read_image(path)?
.resize_image(100, 100, FilterTypes::UndefinedFilter, 1.)?
.write_image("/tmp/output.webp")?;
Ok(())
} ```
MIT.