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use fast_image_resize as fr;
use fast_image_resize::images::Image;
use fast_image_resize::pixels::*;
mod testing;
#[cfg(not(feature = "only_u8x4"))]
mod gamma_tests {
use super::*;
#[test]
fn gamma22_into_linear_test() {
let mapper = fr::create_gamma_22_mapper();
let buffer: Vec<u8> = (0u8..=255).collect();
let src_image = Image::from_vec_u8(16, 16, buffer, PixelType::U8).unwrap();
let src_checksum = testing::image_checksum::<U8, 1>(&src_image);
assert_eq!(src_checksum, [32640]);
// into U8
let mut dst_image = Image::new(16, 16, PixelType::U8);
mapper.forward_map(&src_image, &mut dst_image).unwrap();
let dst_checksum = testing::image_checksum::<U8, 1>(&dst_image);
assert_eq!(dst_checksum, [20443]);
// into U16
let mut dst_image = Image::new(16, 16, PixelType::U16);
mapper.forward_map(&src_image, &mut dst_image).unwrap();
let dst_checksum = testing::image_checksum::<U16, 1>(&dst_image);
assert_eq!(dst_checksum, [5255141]);
}
#[test]
fn gamma22_into_linear_errors_test() {
let mapper = fr::create_gamma_22_mapper();
let buffer: Vec<u8> = (0u8..=255).collect();
let src_image = Image::from_vec_u8(16, 16, buffer, PixelType::U8).unwrap();
let mut dst_image = Image::new(16, 1, PixelType::U8);
let result = mapper.forward_map(&src_image, &mut dst_image);
assert!(matches!(result, Err(fr::MappingError::DifferentDimensions)));
let mut dst_image = Image::new(16, 16, PixelType::U8x2);
let result = mapper.forward_map(&src_image, &mut dst_image);
assert!(matches!(
result,
Err(fr::MappingError::UnsupportedCombinationOfImageTypes)
));
}
#[test]
fn linear_into_gamma22_test() {
let mapper = fr::create_gamma_22_mapper();
let buffer: Vec<u8> = (0u8..=255).collect();
let src_image = Image::from_vec_u8(16, 16, buffer, PixelType::U8).unwrap();
let mut dst_image = Image::new(16, 16, PixelType::U8);
mapper.backward_map(&src_image, &mut dst_image).unwrap();
let src_checksum = testing::image_checksum::<U8, 1>(&src_image);
assert_eq!(src_checksum, [32640]);
let dst_checksum = testing::image_checksum::<U8, 1>(&dst_image);
assert_eq!(dst_checksum, [44824]);
}
#[test]
fn linear_into_gamma22_errors_test() {
let mapper = fr::create_gamma_22_mapper();
let buffer: Vec<u8> = (0u8..=255).collect();
let src_image = Image::from_vec_u8(16, 16, buffer, PixelType::U8).unwrap();
let mut dst_image = Image::new(16, 1, PixelType::U8);
let result = mapper.backward_map(&src_image, &mut dst_image);
assert!(matches!(result, Err(fr::MappingError::DifferentDimensions)));
let mut dst_image = Image::new(16, 16, PixelType::U8x2);
let result = mapper.backward_map(&src_image, &mut dst_image);
assert!(matches!(
result,
Err(fr::MappingError::UnsupportedCombinationOfImageTypes)
));
}
}
#[cfg(not(feature = "only_u8x4"))]
mod srgb_tests {
use super::*;
#[test]
fn srgb_into_rgb_test() {
let mapper = fr::create_srgb_mapper();
let buffer: Vec<u8> = (0u8..=255).flat_map(|v| [v, v, v]).collect();
let src_image = Image::from_vec_u8(16, 16, buffer, PixelType::U8x3).unwrap();
let src_checksum = testing::image_checksum::<U8x3, 3>(&src_image);
assert_eq!(src_checksum, [32640, 32640, 32640]);
let mut dst_image = Image::new(16, 16, PixelType::U8x3);
mapper.forward_map(&src_image, &mut dst_image).unwrap();
let dst_checksum = testing::image_checksum::<U8x3, 3>(&dst_image);
assert_eq!(dst_checksum, [20304, 20304, 20304]);
}
#[test]
fn srgba_into_rgba_test() {
let mapper = fr::create_srgb_mapper();
let buffer: Vec<u8> = (0u8..=255).flat_map(|v| [v, v, v, 255]).collect();
let src_image = Image::from_vec_u8(16, 16, buffer, PixelType::U8x4).unwrap();
let src_checksum = testing::image_checksum::<U8x4, 4>(&src_image);
assert_eq!(src_checksum, [32640, 32640, 32640, 65280]);
let mut dst_image = Image::new(16, 16, PixelType::U8x4);
mapper.forward_map(&src_image, &mut dst_image).unwrap();
let dst_checksum = testing::image_checksum::<U8x4, 4>(&dst_image);
assert_eq!(dst_checksum, [20304, 20304, 20304, 65280]);
}
#[test]
fn srgb_into_rgb_errors_test() {
let mapper = fr::create_srgb_mapper();
let buffer: Vec<u8> = (0u8..=255).flat_map(|v| [v, v, v]).collect();
let src_image = Image::from_vec_u8(16, 16, buffer, PixelType::U8x3).unwrap();
let mut dst_image = Image::new(16, 1, PixelType::U8x3);
let result = mapper.forward_map(&src_image, &mut dst_image);
assert!(matches!(result, Err(fr::MappingError::DifferentDimensions)));
let mut dst_image = Image::new(16, 16, PixelType::U8x2);
let result = mapper.forward_map(&src_image, &mut dst_image);
assert!(matches!(
result,
Err(fr::MappingError::UnsupportedCombinationOfImageTypes)
));
}
#[test]
fn rgb_into_srgb_test() {
let mapper = fr::create_srgb_mapper();
let buffer: Vec<u8> = (0u8..=255).flat_map(|v| [v, v, v]).collect();
let src_image = Image::from_vec_u8(16, 16, buffer, PixelType::U8x3).unwrap();
let src_checksum = testing::image_checksum::<U8x3, 3>(&src_image);
assert_eq!(src_checksum, [32640, 32640, 32640]);
let mut dst_image = Image::new(16, 16, PixelType::U8x3);
mapper.backward_map(&src_image, &mut dst_image).unwrap();
let dst_checksum = testing::image_checksum::<U8x3, 3>(&dst_image);
assert_eq!(dst_checksum, [44981, 44981, 44981]);
}
#[test]
fn rgb_into_srgb_errors_test() {
let mapper = fr::create_srgb_mapper();
let buffer: Vec<u8> = (0u8..=255).flat_map(|v| [v, v, v]).collect();
let src_image = Image::from_vec_u8(16, 16, buffer, PixelType::U8x3).unwrap();
let mut dst_image = Image::new(16, 1, PixelType::U8x3);
let result = mapper.backward_map(&src_image, &mut dst_image);
assert!(matches!(result, Err(fr::MappingError::DifferentDimensions)));
let mut dst_image = Image::new(16, 16, PixelType::U8x2);
let result = mapper.backward_map(&src_image, &mut dst_image);
assert!(matches!(
result,
Err(fr::MappingError::UnsupportedCombinationOfImageTypes)
));
}
}
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