fparkan/vendor/tiff/tests/decode_bigtiff_images.rs

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Rust
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extern crate tiff;
use tiff::decoder::Decoder;
use tiff::tags::Tag;
use tiff::ColorType;
use std::fs::File;
use std::path::PathBuf;
const TEST_IMAGE_DIR: &str = "./tests/images/bigtiff";
#[test]
fn test_big_tiff() {
let filenames = ["BigTIFF.tif", "BigTIFFMotorola.tif", "BigTIFFLong.tif"];
for filename in filenames.iter() {
let path = PathBuf::from(TEST_IMAGE_DIR).join(filename);
let img_file = File::open(path).expect("Cannot find test image!");
let mut decoder = Decoder::new(img_file).expect("Cannot create decoder");
assert_eq!(
decoder.dimensions().expect("Cannot get dimensions"),
(64, 64)
);
assert_eq!(
decoder.colortype().expect("Cannot get colortype"),
ColorType::RGB(8)
);
assert_eq!(
decoder
.get_tag_u64(Tag::StripOffsets)
.expect("Cannot get StripOffsets"),
16
);
assert_eq!(
decoder
.get_tag_u64(Tag::RowsPerStrip)
.expect("Cannot get RowsPerStrip"),
64
);
assert_eq!(
decoder
.get_tag_u64(Tag::StripByteCounts)
.expect("Cannot get StripByteCounts"),
12288
)
}
}