public void Test(string reference, string test)
{
using var refImage = Image.Load <L8>(reference);
using var tiff = TiffFileReader.Open(test);
TiffStreamOffset ifdOffset = tiff.FirstImageFileDirectoryOffset;
while (!ifdOffset.IsZero)
{
TiffImageFileDirectory ifd = tiff.ReadImageFileDirectory(ifdOffset);
TiffImageDecoder decoder = tiff.CreateImageDecoder(ifd, new TiffImageDecoderOptions {
UndoColorPreMultiplying = true
});
Assert.Equal(refImage.Width, decoder.Width);
Assert.Equal(refImage.Height, decoder.Height);
TiffGray8[] pixels = new TiffGray8[decoder.Width * decoder.Height];
decoder.Decode(TiffPixelBuffer.Wrap(pixels, decoder.Width, decoder.Height));
AssertEqual(refImage, pixels);
using (var image = new Image <L8>(decoder.Width, decoder.Height))
{
decoder.Decode(image);
AssertEqual(refImage, image);
}
ifdOffset = ifd.NextOffset;
}
}
public async Task TestAsync(string reference, string test)
{
using var refImage = Image.Load <Rgb24>(reference);
await using TiffFileReader tiff = await TiffFileReader.OpenAsync(test);
TiffStreamOffset ifdOffset = tiff.FirstImageFileDirectoryOffset;
while (!ifdOffset.IsZero)
{
TiffImageFileDirectory ifd = await tiff.ReadImageFileDirectoryAsync(ifdOffset);
TiffImageDecoder decoder = await tiff.CreateImageDecoderAsync(ifd, new TiffImageDecoderOptions { UndoColorPreMultiplying = true });
Assert.Equal(refImage.Width, decoder.Width);
Assert.Equal(refImage.Height, decoder.Height);
TiffRgb24[] pixels = new TiffRgb24[decoder.Width * decoder.Height];
await decoder.DecodeAsync(TiffPixelBuffer.Wrap(pixels, decoder.Width, decoder.Height));
AssertEqual(refImage, pixels);
using (var image = new Image <Rgb24>(decoder.Width, decoder.Height))
{
decoder.Decode(image);
AssertEqual(refImage, image);
}
ifdOffset = ifd.NextOffset;
}
}
