35 lines
1.1 KiB
Rust
35 lines
1.1 KiB
Rust
use ccvl::image::*;
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fn filter(img: Image<SRGBA>) -> Image<SRGBA> {
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img.map(|p| Luminance::from(p).into())
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}
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fn main() -> std::process::ExitCode {
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let args = std::env::args().collect::<Vec<String>>();
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if args.len() != 3 {
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println!("Usage: {} IN OUT", args[0].as_str());
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return std::process::ExitCode::FAILURE;
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}
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let input_path = args[1].as_str();
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let output_path = args[2].as_str();
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match Image::load::<Farbfeld>(input_path) {
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Err(Error::Invalid) => {
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println!("{} is not a valid image", input_path);
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std::process::ExitCode::FAILURE
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}
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Err(Error::Io(err)) => {
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println!("I/O error loading image {}: {}", input_path, err);
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std::process::ExitCode::FAILURE
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}
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Ok(img) => match filter(img).save::<Farbfeld>(output_path) {
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Err(err) => {
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println!("I/O error saving image {}: {}", output_path, err);
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std::process::ExitCode::FAILURE
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}
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Ok(()) => std::process::ExitCode::SUCCESS,
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},
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}
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}
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