Safe Haskell	None

Graphics.Netpbm

Description

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.

Synopsis

Documentation

data PPMType Source

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 Source

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 Source

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

Instances

Eq PpmPixelRGB8
Show PpmPixelRGB8
Storable PpmPixelRGB8
Unbox PpmPixelRGB8
Vector Vector PpmPixelRGB8
MVector MVector PpmPixelRGB8

data PpmPixelRGB16 Source

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

Instances

Eq PpmPixelRGB16
Show PpmPixelRGB16
Storable PpmPixelRGB16
Unbox PpmPixelRGB16
Vector Vector PpmPixelRGB16
MVector MVector PpmPixelRGB16

data PpmPixelData Source

Image data, either 8 or 16 bits.

Constructors

PpmPixelDataRGB8 (Vector PpmPixelRGB8)	For 8-bit PPMs.
PpmPixelDataRGB16 (Vector PpmPixelRGB16)	For 16-bit PPMs.

parsePPM :: ByteString -> PpmParseResult Source

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)Source

The result of a PPM parse.

See parsePPM.