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1. pixelMap :: (Pixel a, Pixel b) => (a -> b) -> Image a -> Image b

   JuicyPixels	Codec.Picture

   map equivalent for an image, working at the pixel level. Little example : a brightness function for an rgb image

   brightnessRGB8 :: Int -> Image PixelRGB8 -> Image PixelRGB8
   brightnessRGB8 add = pixelMap brightFunction
   where up v = fromIntegral (fromIntegral v + add)
   brightFunction (PixelRGB8 r g b) =
   PixelRGB8 (up r) (up g) (up b)
   

2. readBitmap :: FilePath -> IO (Either String DynamicImage)

   JuicyPixels	Codec.Picture

   Try to load a .bmp file. The colorspace would be RGB, RGBA or Y.

3. writeBitmap :: BmpEncodable pixel => FilePath -> Image pixel -> IO ()

   JuicyPixels	Codec.Picture

   Write an image in a file use the bitmap format.

4. writeDynamicBitmap :: FilePath -> DynamicImage -> IO (Either String Bool)

   JuicyPixels	Codec.Picture

   Write a dynamic image in a .bmp image file if possible. The same restriction as encodeDynamicBitmap apply.

5. module Codec.Picture.Bitmap

   Modules used for Bitmap file (.bmp) file loading and writing

6. decodeBitmap :: ByteString -> Either String DynamicImage

   JuicyPixels	Codec.Picture.Bitmap

   Try to decode a bitmap image. Right now this function can output the following image:

   • ImageY8
   • ImageRGB8
   • ImageRGBA8

7. decodeBitmapWithMetadata :: ByteString -> Either String (DynamicImage, Metadatas)

   JuicyPixels	Codec.Picture.Bitmap

   Same as decodeBitmap but also extracts metadata.

8. decodeBitmapWithPaletteAndMetadata :: ByteString -> Either String (PalettedImage, Metadatas)

   JuicyPixels	Codec.Picture.Bitmap

   Same as decodeBitmap but also extracts metadata and provide separated palette.

9. encodeBitmap :: BmpEncodable pixel => Image pixel -> ByteString

   JuicyPixels	Codec.Picture.Bitmap

   Encode an image into a bytestring in .bmp format ready to be written on disk.

10. encodeBitmapWithMetadata :: BmpEncodable pixel => Metadatas -> Image pixel -> ByteString

    JuicyPixels	Codec.Picture.Bitmap

    Equivalent to encodeBitmap but also store the following metadatas:

    • DpiX
    • DpiY

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