Codec.Picture.STBIR

Resize function

resize

Arguments

:: STBIRPixel a

=> Options

-> Int

new width

-> Int

new height

-> Image a

-> Image a

This function allows access to all "API levels" of the C library. Pass defaultOptions to use the easy API, or override whichever options you need.

Options

data Options

Constructors

Options

Fields

• flags :: [Flag]
• edgeModeHorizontal :: Edge
• edgeModeVertical :: Edge
• filterHorizontal :: Filter
• filterVertical :: Filter
• colorspace :: Colorspace
• transform :: Either Scale Region

Instances

Eq Options

Methods

(==) :: Options -> Options -> Bool

(/=) :: Options -> Options -> Bool

Ord Options

Methods

compare :: Options -> Options -> Ordering

(<) :: Options -> Options -> Bool

(<=) :: Options -> Options -> Bool

(>) :: Options -> Options -> Bool

(>=) :: Options -> Options -> Bool

max :: Options -> Options -> Options

min :: Options -> Options -> Options

Read Options

Methods

readsPrec :: Int -> ReadS Options

readList :: ReadS [Options]

readPrec :: ReadPrec Options

readListPrec :: ReadPrec [Options]

Show Options

Methods

showsPrec :: Int -> Options -> ShowS

show :: Options -> String

showList :: [Options] -> ShowS

Default Options

Methods

def :: Options

defaultOptions :: Options

These are the options that correspond to the "Easy-to-use API".

data Flag

Instances

Eq Flag

Methods

(==) :: Flag -> Flag -> Bool

(/=) :: Flag -> Flag -> Bool

Ord Flag

Methods

compare :: Flag -> Flag -> Ordering

(<) :: Flag -> Flag -> Bool

(<=) :: Flag -> Flag -> Bool

(>) :: Flag -> Flag -> Bool

(>=) :: Flag -> Flag -> Bool

max :: Flag -> Flag -> Flag

min :: Flag -> Flag -> Flag

Read Flag

Methods

readsPrec :: Int -> ReadS Flag

readList :: ReadS [Flag]

readPrec :: ReadPrec Flag

readListPrec :: ReadPrec [Flag]

Show Flag

Methods

showsPrec :: Int -> Flag -> ShowS

show :: Flag -> String

showList :: [Flag] -> ShowS

flag_ALPHA_PREMULTIPLIED :: Flag

Set this flag if your texture has premultiplied alpha. Otherwise, stbir will use alpha-weighted resampling (effectively premultiplying, resampling, then unpremultiplying).

flag_ALPHA_USES_COLORSPACE :: Flag

The specified alpha channel should be handled as gamma-corrected value even when doing sRGB operations.

data Edge

Constructors

EDGE_CLAMP

EDGE_REFLECT

EDGE_WRAP

EDGE_ZERO

Instances

Bounded Edge

Methods

minBound :: Edge

maxBound :: Edge

Enum Edge

Methods

succ :: Edge -> Edge

pred :: Edge -> Edge

toEnum :: Int -> Edge

fromEnum :: Edge -> Int

enumFrom :: Edge -> [Edge]

enumFromThen :: Edge -> Edge -> [Edge]

enumFromTo :: Edge -> Edge -> [Edge]

enumFromThenTo :: Edge -> Edge -> Edge -> [Edge]

Eq Edge

Methods

(==) :: Edge -> Edge -> Bool

(/=) :: Edge -> Edge -> Bool

Ord Edge

Methods

compare :: Edge -> Edge -> Ordering

(<) :: Edge -> Edge -> Bool

(<=) :: Edge -> Edge -> Bool

(>) :: Edge -> Edge -> Bool

(>=) :: Edge -> Edge -> Bool

max :: Edge -> Edge -> Edge

min :: Edge -> Edge -> Edge

Read Edge

Methods

readsPrec :: Int -> ReadS Edge

readList :: ReadS [Edge]

readPrec :: ReadPrec Edge

readListPrec :: ReadPrec [Edge]

Show Edge

Methods

showsPrec :: Int -> Edge -> ShowS

show :: Edge -> String

showList :: [Edge] -> ShowS

data Filter

Constructors

FILTER_DEFAULT

use same filter type that easy-to-use API chooses

FILTER_BOX

A trapezoid w/1-pixel wide ramps, same result as box for integer scale ratios

FILTER_TRIANGLE

On upsampling, produces same results as bilinear texture filtering

FILTER_CUBICBSPLINE

The cubic b-spline (aka Mitchell-Netrevalli with B=1,C=0), gaussian-esque

FILTER_CATMULLROM

An interpolating cubic spline

FILTER_MITCHELL

Mitchell-Netrevalli filter with B=1/3, C=1/3

Instances

Bounded Filter

Methods

minBound :: Filter

maxBound :: Filter

Enum Filter

Methods

succ :: Filter -> Filter

pred :: Filter -> Filter

toEnum :: Int -> Filter

fromEnum :: Filter -> Int

enumFrom :: Filter -> [Filter]

enumFromThen :: Filter -> Filter -> [Filter]

enumFromTo :: Filter -> Filter -> [Filter]

enumFromThenTo :: Filter -> Filter -> Filter -> [Filter]

Eq Filter

Methods

(==) :: Filter -> Filter -> Bool

(/=) :: Filter -> Filter -> Bool

Ord Filter

Methods

compare :: Filter -> Filter -> Ordering

(<) :: Filter -> Filter -> Bool

(<=) :: Filter -> Filter -> Bool

(>) :: Filter -> Filter -> Bool

(>=) :: Filter -> Filter -> Bool

max :: Filter -> Filter -> Filter

min :: Filter -> Filter -> Filter

Read Filter

Methods

readsPrec :: Int -> ReadS Filter

readList :: ReadS [Filter]

readPrec :: ReadPrec Filter

readListPrec :: ReadPrec [Filter]

Show Filter

Methods

showsPrec :: Int -> Filter -> ShowS

show :: Filter -> String

showList :: [Filter] -> ShowS

data Colorspace

Constructors

COLORSPACE_LINEAR

COLORSPACE_SRGB

Instances

Bounded Colorspace

Methods

minBound :: Colorspace

maxBound :: Colorspace

Enum Colorspace

Methods

succ :: Colorspace -> Colorspace

pred :: Colorspace -> Colorspace

toEnum :: Int -> Colorspace

fromEnum :: Colorspace -> Int

enumFrom :: Colorspace -> [Colorspace]

enumFromThen :: Colorspace -> Colorspace -> [Colorspace]

enumFromTo :: Colorspace -> Colorspace -> [Colorspace]

enumFromThenTo :: Colorspace -> Colorspace -> Colorspace -> [Colorspace]

Eq Colorspace

Methods

(==) :: Colorspace -> Colorspace -> Bool

(/=) :: Colorspace -> Colorspace -> Bool

Ord Colorspace

Methods

compare :: Colorspace -> Colorspace -> Ordering

(<) :: Colorspace -> Colorspace -> Bool

(<=) :: Colorspace -> Colorspace -> Bool

(>) :: Colorspace -> Colorspace -> Bool

(>=) :: Colorspace -> Colorspace -> Bool

max :: Colorspace -> Colorspace -> Colorspace

min :: Colorspace -> Colorspace -> Colorspace

Read Colorspace

Methods

readsPrec :: Int -> ReadS Colorspace

readList :: ReadS [Colorspace]

readPrec :: ReadPrec Colorspace

readListPrec :: ReadPrec [Colorspace]

Show Colorspace

Methods

showsPrec :: Int -> Colorspace -> ShowS

show :: Colorspace -> String

showList :: [Colorspace] -> ShowS

data Scale

Specify scale explicitly for subpixel correctness

Constructors

Scale

Fields

• x_scale :: Float
• y_scale :: Float
• x_offset :: Float
• y_offset :: Float

Instances

Eq Scale

Methods

(==) :: Scale -> Scale -> Bool

(/=) :: Scale -> Scale -> Bool

Ord Scale

Methods

compare :: Scale -> Scale -> Ordering

(<) :: Scale -> Scale -> Bool

(<=) :: Scale -> Scale -> Bool

(>) :: Scale -> Scale -> Bool

(>=) :: Scale -> Scale -> Bool

max :: Scale -> Scale -> Scale

min :: Scale -> Scale -> Scale

Read Scale

Methods

readsPrec :: Int -> ReadS Scale

readList :: ReadS [Scale]

readPrec :: ReadPrec Scale

readListPrec :: ReadPrec [Scale]

Show Scale

Methods

showsPrec :: Int -> Scale -> ShowS

show :: Scale -> String

showList :: [Scale] -> ShowS

data Region

Specify image source tile using texture coordinates

Constructors

Region

Fields

• region_s0 :: Float

  x of top-left corner from 0 to 1

• region_t0 :: Float

  y of top-left corner from 0 to 1

• region_s1 :: Float

  x of bottom-right corner from 0 to 1

• region_t1 :: Float

  y of bottom-right corner from 0 to 1

Instances

Eq Region

Methods

(==) :: Region -> Region -> Bool

(/=) :: Region -> Region -> Bool

Ord Region

Methods

compare :: Region -> Region -> Ordering

(<) :: Region -> Region -> Bool

(<=) :: Region -> Region -> Bool

(>) :: Region -> Region -> Bool

(>=) :: Region -> Region -> Bool

max :: Region -> Region -> Region

min :: Region -> Region -> Region

Read Region

Methods

readsPrec :: Int -> ReadS Region

readList :: ReadS [Region]

readPrec :: ReadPrec Region

readListPrec :: ReadPrec [Region]

Show Region

Methods

showsPrec :: Int -> Region -> ShowS

show :: Region -> String

showList :: [Region] -> ShowS

Supported pixel types

class (Pixel a, STBIRComponent (PixelBaseComponent a)) => STBIRPixel a where

All types currently covered by JP's Pixel are supported.

Minimal complete definition

alphaIndex

Methods

alphaIndex :: a -> Maybe Int

Instances

STBIRPixel Pixel8

Methods

alphaIndex :: Pixel8 -> Maybe Int

STBIRPixel Pixel16

Methods

alphaIndex :: Pixel16 -> Maybe Int

STBIRPixel Pixel32

Methods

alphaIndex :: Pixel32 -> Maybe Int

STBIRPixel PixelF

Methods

alphaIndex :: PixelF -> Maybe Int

STBIRPixel PixelYA8

Methods

alphaIndex :: PixelYA8 -> Maybe Int

STBIRPixel PixelYA16

Methods

alphaIndex :: PixelYA16 -> Maybe Int

STBIRPixel PixelRGB8

Methods

alphaIndex :: PixelRGB8 -> Maybe Int

STBIRPixel PixelYCbCrK8

Methods

alphaIndex :: PixelYCbCrK8 -> Maybe Int

STBIRPixel PixelRGB16

Methods

alphaIndex :: PixelRGB16 -> Maybe Int

STBIRPixel PixelRGBF

Methods

alphaIndex :: PixelRGBF -> Maybe Int

STBIRPixel PixelYCbCr8

Methods

alphaIndex :: PixelYCbCr8 -> Maybe Int

STBIRPixel PixelCMYK8

Methods

alphaIndex :: PixelCMYK8 -> Maybe Int

STBIRPixel PixelCMYK16

Methods

alphaIndex :: PixelCMYK16 -> Maybe Int

STBIRPixel PixelRGBA8

Methods

alphaIndex :: PixelRGBA8 -> Maybe Int

STBIRPixel PixelRGBA16

Methods

alphaIndex :: PixelRGBA16 -> Maybe Int

class STBIRComponent a where

Minimal complete definition

stbirType

Methods

stbirType :: a -> Datatype

Instances

STBIRComponent Float

Methods

stbirType :: Float -> Datatype

STBIRComponent Word8

Methods

stbirType :: Word8 -> Datatype

STBIRComponent Word16

Methods

stbirType :: Word16 -> Datatype

STBIRComponent Word32

Methods

stbirType :: Word32 -> Datatype

data Datatype

Constructors

TYPE_UINT8

TYPE_UINT16

TYPE_UINT32

TYPE_FLOAT

Instances

Enum Datatype

Methods

succ :: Datatype -> Datatype

pred :: Datatype -> Datatype

toEnum :: Int -> Datatype

fromEnum :: Datatype -> Int

enumFrom :: Datatype -> [Datatype]

enumFromThen :: Datatype -> Datatype -> [Datatype]

enumFromTo :: Datatype -> Datatype -> [Datatype]

enumFromThenTo :: Datatype -> Datatype -> Datatype -> [Datatype]