massiv-io: readImage(Auto) ConvertError on reading tif or png image

[rl-king]

Similar to #22. I'm trying to read a tif or png file and get a conversion error. I've attached two sample images I just created in Photoshop.

I originally tried to read a grayscale image which didn't work either. I ended up trying a bunch of formats and color spaces and using readImage doesn't make a difference.

Using stack resolver: lts-14.14

:> readImageAuto "test.png" :: IO (Image S RGB Word16)
Array S *** Exception: ConvertError "Cannot decode Auto PNG image <Image S RGB Word16> as <Image S RGB Word16>"
:> readImageAuto "test.tiff" :: IO (Image S RGB Word16)
Array S *** Exception: ConvertError "Cannot decode Auto TIF image <Image S RGB Word16> as <Image S RGB Word16>"

test-tif-and-png.zip

[lehins]

I wish JuicyPixels just used Storable instances like everyone else, but no, there is a custom mechanism for dealing with multiple channels. In any case, that was my fault, thank you for spotting the mistake, it should be fixed now. I'll make a release a little bit later today, so new version will be in the next LTS.

[lehins]

Oh, and the error message was pretty stupid. That part will get much better in the next major release of massiv-io, which will happen hopefully not too far into the future.

[rl-king]

Thanks for the quick response and fix!