steven-joruk / qoi

A rust implementation of the “Quite OK Image” format for fast, lossless image compression

A Rust implemention of the “Quite OK Image” format for fast, lossless image compression.

See Phoboslab's original C implementation for more details.

License

Apache-2.0 OR MIT.

To do

• Add tests for decoding using 3 and 4 channels where the source has the opposite number of channels.
• Include benchmarks for the C implementation
• More tests

Generating test images

You'll need to build the C qoiconv utility with this hack applied:

diff --git a/qoiconv.c b/qoiconv.c
index 6e7ad36..c91d2e0 100644
--- a/qoiconv.c
+++ b/qoiconv.c
@@ -84,7 +84,12 @@ int main(int argc, char **argv) {
 			.channels = channels,
 			.colorspace = QOI_SRGB
 		});
-	}
+	} else if (STR_ENDS_WITH(argv[2], ".raw")) {
+              encoded = 1;
+              FILE* fp = fopen(argv[2], "wb");
+              fwrite(pixels, w * h * channels, 1, fp);
+              fclose(fp);
+        }

 	if (!encoded) {
 		printf("Couldn't write/encode %s\n", argv[2]);

Copy it to cqoiconv

Download https://phoboslab.org/files/qoibench/images.tar

Run ./create_tests.sh <path to images.tar>