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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
commit43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree620249daf56c0258faa40cbdcf9cfba06de2a846 /gfx/qcms/README.md
parentInitial commit. (diff)
downloadfirefox-upstream.tar.xz
firefox-upstream.zip
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+# qcms
+[![Crates.io](https://img.shields.io/crates/v/qcms.svg)](https://crates.io/crates/qcms)
+[![Documentation](https://docs.rs/qcms/badge.svg)](https://docs.rs/qcms)
+
+
+Firefox's library for transforming image data between ICC profiles.
+
+## Example
+```rust
+ // Decode the jpeg
+ let mut d = jpeg_decoder::Decoder::new(std::fs::File::open("/Users/jrmuizel/Desktop/DSCF2460.jpg").unwrap());
+ let mut data = d.decode().unwrap();
+ let info = d.info().unwrap();
+
+ // Extract the profile after decode
+ let profile = d.icc_profile().unwrap();
+
+ // Create a new qcms Profile
+ let input = qcms::Profile::new_from_slice(&profile).unwrap();
+ let mut output = qcms::Profile::new_sRGB();
+ output.precache_output_transform();
+
+ // Create a transform between input and output profiles and apply it.
+ let xfm = qcms::Transform::new(&input, &output, qcms::DataType::RGB8, qcms::Intent::default()).unwrap();
+ xfm.apply(&mut data);
+
+ // write the result to a PNG
+ let mut encoder = png::Encoder::new(std::fs::File::create("out.png").unwrap(), info.width as u32, info.height as u32);
+ encoder.set_color(png::ColorType::Rgb);
+ encoder.set_srgb(png::SrgbRenderingIntent::Perceptual);
+ let mut writer = encoder.write_header().unwrap();
+ writer.write_image_data(&data).unwrap(); // Save
+```
+
+This library was originally written in C, was converted to Rust using [c2rust](https://c2rust.com/), and then refactored to be mostly
+safe and more idiomatic Rust.