Reading and writing uncompressed BMP files.
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Supports uncompressed 24bit RGB and 32bit RGBA WindowsV3, WindowsV4 and WindowsV5 formats.
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We don't support the plain OS/2 BitmapCoreHeader and BitmapCoreHeader2 image headers, but I haven't yet seen one of these in the wild.
To write a file do something like:
do let rgba = Data.ByteString.pack [some list of Word8s]
let bmp = packRGBA32ToBMP width height rgba
writeBMP fileName bmp
To read a file do something like:
do Right bmp <- readBMP fileName
let rgba = unpackBMPToRGBA32 bmp
let (width, height) = bmpDimensions bmp
...
As bmp is now fairly stable, I typically make releases only when there is a new GHC version. If you have added a new feature or fixed a bug, and want your pull request merged sooner than that, then send email to benl AT ouroborus.net. I don't pay attention to github notifications, but am happy to receive emails from people. If you have changed any internal functionality then please test that all the example images under data/ still load with the test/Dump.hs harness.
If you just want to bump a dependency version then get a Hackage trustee to edit the package information directly on Hackage. You don't need to raise a pull request here.