Graphics.Netpbm

Parsing the netpbm image formates (PBM, PGM and PPM, both ASCII and binary) from ByteStrings.

To parse one of these formats, use parsePPM.

Currently, only P6 images are implemented. Implementing the other types should be straighforward.

Documentation

data PPMType

The netpbm image type of an image.

Constructors

P1

ASCII bitmap

P2

ASCII greymap

P3

ASCII pixmap (color)

P4

binary bitmap

P5

binary greymap

P6

binary pixmap (color)

Instances

Enum PPMType

Eq PPMType

Ord PPMType

Show PPMType

data PPM

A PPM file with type, dimensions, and image data.

Constructors

PPM

Fields

ppmType :: PPMType

ppmWidth :: !Int

ppmHeight :: !Int

ppmData :: PpmPixelData

Instances

Show PPM

data PpmPixelRGB8

A pixel containing three 8-bit color components, RGB.

Instances

Eq PpmPixelRGB8

Show PpmPixelRGB8

Unbox PpmPixelRGB8

Vector Vector PpmPixelRGB8

MVector MVector PpmPixelRGB8

data PpmPixelRGB16

A pixel containing three 16-bit color components, RGB.

Instances

Eq PpmPixelRGB16

Show PpmPixelRGB16

Unbox PpmPixelRGB16

Vector Vector PpmPixelRGB16

MVector MVector PpmPixelRGB16

parsePPM :: ByteString -> PpmParseResult

Parses a PPM file from the given ByteString. On failure, Left error contains the error message. On success, Right (images, Maybe rest) contains the parsed images and potentially an unparsable rest input.

type PpmParseResult = Either String ([PPM], Maybe ByteString)

The result of a PPM parse.

See parsePPM.