{-# LANGUAGE BangPatterns #-}
{-# LANGUAGE CPP #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE FunctionalDependencies #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE Rank2Types #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeSynonymInstances #-}
{-# LANGUAGE UndecidableInstances #-}
module Codec.Picture.Types(
Image( .. )
, MutableImage( .. )
, DynamicImage( .. )
, PalettedImage( .. )
, Palette
, Palette'( .. )
, createMutableImage
, newMutableImage
, freezeImage
, unsafeFreezeImage
, thawImage
, unsafeThawImage
, Traversal
, imagePixels
, imageIPixels
, Pixel8
, Pixel16
, Pixel32
, PixelF
, PixelYA8( .. )
, PixelYA16( .. )
, PixelRGB8( .. )
, PixelRGB16( .. )
, PixelRGBF( .. )
, PixelRGBA8( .. )
, PixelRGBA16( .. )
, PixelCMYK8( .. )
, PixelCMYK16( .. )
, PixelYCbCr8( .. )
, PixelYCbCrK8( .. )
, ColorConvertible( .. )
, Pixel(..)
, ColorSpaceConvertible( .. )
, LumaPlaneExtractable( .. )
, TransparentPixel( .. )
, pixelMap
, pixelMapXY
, pixelFold
, pixelFoldM
, pixelFoldMap
, dynamicMap
, dynamicPixelMap
, palettedToTrueColor
, palettedAsImage
, dropAlphaLayer
, withImage
, zipPixelComponent3
, generateImage
, generateFoldImage
, gammaCorrection
, toneMapping
, ColorPlane ( )
, PlaneRed( .. )
, PlaneGreen( .. )
, PlaneBlue( .. )
, PlaneAlpha( .. )
, PlaneLuma( .. )
, PlaneCr( .. )
, PlaneCb( .. )
, PlaneCyan( .. )
, PlaneMagenta( .. )
, PlaneYellow( .. )
, PlaneBlack( .. )
, extractComponent
, unsafeExtractComponent
, PackeablePixel( .. )
, fillImageWith
, readPackedPixelAt
, writePackedPixelAt
, unsafeWritePixelBetweenAt
) where
#if !MIN_VERSION_base(4,8,0)
import Data.Monoid( Monoid, mempty )
import Control.Applicative( Applicative, pure, (<*>), (<$>) )
#endif
import Data.Monoid( (<>) )
import Control.Monad( foldM, liftM, ap )
import Control.DeepSeq( NFData( .. ) )
import Control.Monad.ST( ST, runST )
import Control.Monad.Primitive ( PrimMonad, PrimState )
import Foreign.ForeignPtr( castForeignPtr )
import Foreign.Storable ( Storable )
import Data.Bits( unsafeShiftL, unsafeShiftR, (.|.), (.&.) )
import Data.Typeable ( Typeable )
import Data.Word( Word8, Word16, Word32, Word64 )
import Data.Vector.Storable ( (!) )
import qualified Data.Vector.Storable as V
import qualified Data.Vector.Storable.Mutable as M
#include "ConvGraph.hs"
data Image a = Image
{
imageWidth :: {-# UNPACK #-} !Int
, imageHeight :: {-# UNPACK #-} !Int
, imageData :: V.Vector (PixelBaseComponent a)
}
deriving (Typeable)
instance (Eq (PixelBaseComponent a), Storable (PixelBaseComponent a))
=> Eq (Image a) where
a == b = imageWidth a == imageWidth b &&
imageHeight a == imageHeight b &&
imageData a == imageData b
type Palette = Image PixelRGB8
class ColorPlane pixel planeToken where
toComponentIndex :: pixel -> planeToken -> Int
data PlaneRed = PlaneRed
deriving (Typeable)
data PlaneGreen = PlaneGreen
deriving (Typeable)
data PlaneBlue = PlaneBlue
deriving (Typeable)
data PlaneAlpha = PlaneAlpha
deriving (Typeable)
data PlaneLuma = PlaneLuma
deriving (Typeable)
data PlaneCr = PlaneCr
deriving (Typeable)
data PlaneCb = PlaneCb
deriving (Typeable)
data PlaneCyan = PlaneCyan
deriving (Typeable)
data PlaneMagenta = PlaneMagenta
deriving (Typeable)
data PlaneYellow = PlaneYellow
deriving (Typeable)
data PlaneBlack = PlaneBlack
deriving (Typeable)
extractComponent :: forall px plane. ( Pixel px
, Pixel (PixelBaseComponent px)
, PixelBaseComponent (PixelBaseComponent px)
~ PixelBaseComponent px
, ColorPlane px plane )
=> plane -> Image px -> Image (PixelBaseComponent px)
extractComponent plane = unsafeExtractComponent idx
where idx = toComponentIndex (undefined :: px) plane
unsafeExtractComponent :: forall a
. ( Pixel a
, Pixel (PixelBaseComponent a)
, PixelBaseComponent (PixelBaseComponent a)
~ PixelBaseComponent a)
=> Int
-> Image a
-> Image (PixelBaseComponent a)
unsafeExtractComponent comp img@(Image { imageWidth = w, imageHeight = h })
| comp >= padd = error $ "extractComponent : invalid component index ("
++ show comp ++ ", max:" ++ show padd ++ ")"
| otherwise = Image { imageWidth = w, imageHeight = h, imageData = plane }
where plane = stride img padd comp
padd = componentCount (undefined :: a)
dropAlphaLayer :: (TransparentPixel a b) => Image a -> Image b
dropAlphaLayer = pixelMap dropTransparency
class (Pixel a, Pixel b) => TransparentPixel a b | a -> b where
dropTransparency :: a -> b
getTransparency :: a -> PixelBaseComponent a
{-# DEPRECATED getTransparency "please use 'pixelOpacity' instead" #-}
instance TransparentPixel PixelRGBA8 PixelRGB8 where
{-# INLINE dropTransparency #-}
dropTransparency (PixelRGBA8 r g b _) = PixelRGB8 r g b
{-# INLINE getTransparency #-}
getTransparency (PixelRGBA8 _ _ _ a) = a
lineFold :: (Monad m) => a -> Int -> (a -> Int -> m a) -> m a
{-# INLINE lineFold #-}
lineFold initial count f = go 0 initial
where go n acc | n >= count = return acc
go n acc = f acc n >>= go (n + 1)
stride :: (Storable (PixelBaseComponent a))
=> Image a -> Int -> Int -> V.Vector (PixelBaseComponent a)
stride Image { imageWidth = w, imageHeight = h, imageData = array }
padd firstComponent = runST $ do
let cell_count = w * h
outArray <- M.new cell_count
let go writeIndex _ | writeIndex >= cell_count = return ()
go writeIndex readIndex = do
(outArray `M.unsafeWrite` writeIndex) $ array `V.unsafeIndex` readIndex
go (writeIndex + 1) $ readIndex + padd
go 0 firstComponent
V.unsafeFreeze outArray
instance NFData (Image a) where
rnf (Image width height dat) = width `seq`
height `seq`
dat `seq`
()
data MutableImage s a = MutableImage
{
mutableImageWidth :: {-# UNPACK #-} !Int
, mutableImageHeight :: {-# UNPACK #-} !Int
, mutableImageData :: M.STVector s (PixelBaseComponent a)
}
deriving (Typeable)
freezeImage :: (Storable (PixelBaseComponent px), PrimMonad m)
=> MutableImage (PrimState m) px -> m (Image px)
freezeImage (MutableImage w h d) = Image w h `liftM` V.freeze d
thawImage :: (Storable (PixelBaseComponent px), PrimMonad m)
=> Image px -> m (MutableImage (PrimState m) px)
thawImage (Image w h d) = MutableImage w h `liftM` V.thaw d
unsafeThawImage :: (Storable (PixelBaseComponent px), PrimMonad m)
=> Image px -> m (MutableImage (PrimState m) px)
{-# NOINLINE unsafeThawImage #-}
unsafeThawImage (Image w h d) = MutableImage w h `liftM` V.unsafeThaw d
unsafeFreezeImage :: (Storable (PixelBaseComponent a), PrimMonad m)
=> MutableImage (PrimState m) a -> m (Image a)
unsafeFreezeImage (MutableImage w h d) = Image w h `liftM` V.unsafeFreeze d
createMutableImage :: (Pixel px, PrimMonad m)
=> Int
-> Int
-> px
-> m (MutableImage (PrimState m) px)
createMutableImage width height background =
generateMutableImage (\_ _ -> background) width height
newMutableImage :: forall px m. (Pixel px, PrimMonad m)
=> Int
-> Int
-> m (MutableImage (PrimState m) px)
newMutableImage w h = MutableImage w h `liftM` M.new (w * h * compCount)
where compCount = componentCount (undefined :: px)
instance NFData (MutableImage s a) where
rnf (MutableImage width height dat) = width `seq`
height `seq`
dat `seq`
()
data DynamicImage =
ImageY8 (Image Pixel8)
| ImageY16 (Image Pixel16)
| ImageY32 (Image Pixel32)
| ImageYF (Image PixelF)
| ImageYA8 (Image PixelYA8)
| ImageYA16 (Image PixelYA16)
| ImageRGB8 (Image PixelRGB8)
| ImageRGB16 (Image PixelRGB16)
| ImageRGBF (Image PixelRGBF)
| ImageRGBA8 (Image PixelRGBA8)
| ImageRGBA16 (Image PixelRGBA16)
| ImageYCbCr8 (Image PixelYCbCr8)
| ImageCMYK8 (Image PixelCMYK8)
| ImageCMYK16 (Image PixelCMYK16)
deriving (Eq, Typeable)
data Palette' px = Palette'
{
_paletteSize :: !Int
, _paletteData :: !(V.Vector (PixelBaseComponent px))
}
deriving Typeable
palettedAsImage :: Palette' px -> Image px
palettedAsImage p = Image (_paletteSize p) 1 $ _paletteData p
data PalettedImage
= TrueColorImage DynamicImage
| PalettedY8 (Image Pixel8) (Palette' Pixel8)
| PalettedRGB8 (Image Pixel8) (Palette' PixelRGB8)
| PalettedRGBA8 (Image Pixel8) (Palette' PixelRGBA8)
| PalettedRGB16 (Image Pixel8) (Palette' PixelRGB16)
deriving (Typeable)
palettedToTrueColor :: PalettedImage -> DynamicImage
palettedToTrueColor img = case img of
TrueColorImage d -> d
PalettedY8 i p -> ImageY8 $ toTrueColor 1 (_paletteData p) i
PalettedRGB8 i p -> ImageRGB8 $ toTrueColor 3 (_paletteData p) i
PalettedRGBA8 i p -> ImageRGBA8 $ toTrueColor 4 (_paletteData p) i
PalettedRGB16 i p -> ImageRGB16 $ toTrueColor 3 (_paletteData p) i
where
toTrueColor c vec = pixelMap (unsafePixelAt vec . (c *) . fromIntegral)
dynamicMap :: (forall pixel . (Pixel pixel) => Image pixel -> a)
-> DynamicImage -> a
dynamicMap f (ImageY8 i) = f i
dynamicMap f (ImageY16 i) = f i
dynamicMap f (ImageY32 i) = f i
dynamicMap f (ImageYF i) = f i
dynamicMap f (ImageYA8 i) = f i
dynamicMap f (ImageYA16 i) = f i
dynamicMap f (ImageRGB8 i) = f i
dynamicMap f (ImageRGB16 i) = f i
dynamicMap f (ImageRGBF i) = f i
dynamicMap f (ImageRGBA8 i) = f i
dynamicMap f (ImageRGBA16 i) = f i
dynamicMap f (ImageYCbCr8 i) = f i
dynamicMap f (ImageCMYK8 i) = f i
dynamicMap f (ImageCMYK16 i) = f i
dynamicPixelMap :: (forall pixel . (Pixel pixel) => Image pixel -> Image pixel)
-> DynamicImage -> DynamicImage
dynamicPixelMap f = aux
where
aux (ImageY8 i) = ImageY8 (f i)
aux (ImageY16 i) = ImageY16 (f i)
aux (ImageY32 i) = ImageY32 (f i)
aux (ImageYF i) = ImageYF (f i)
aux (ImageYA8 i) = ImageYA8 (f i)
aux (ImageYA16 i) = ImageYA16 (f i)
aux (ImageRGB8 i) = ImageRGB8 (f i)
aux (ImageRGB16 i) = ImageRGB16 (f i)
aux (ImageRGBF i) = ImageRGBF (f i)
aux (ImageRGBA8 i) = ImageRGBA8 (f i)
aux (ImageRGBA16 i) = ImageRGBA16 (f i)
aux (ImageYCbCr8 i) = ImageYCbCr8 (f i)
aux (ImageCMYK8 i) = ImageCMYK8 (f i)
aux (ImageCMYK16 i) = ImageCMYK16 (f i)
instance NFData DynamicImage where
rnf (ImageY8 img) = rnf img
rnf (ImageY16 img) = rnf img
rnf (ImageY32 img) = rnf img
rnf (ImageYF img) = rnf img
rnf (ImageYA8 img) = rnf img
rnf (ImageYA16 img) = rnf img
rnf (ImageRGB8 img) = rnf img
rnf (ImageRGB16 img) = rnf img
rnf (ImageRGBF img) = rnf img
rnf (ImageRGBA8 img) = rnf img
rnf (ImageRGBA16 img) = rnf img
rnf (ImageYCbCr8 img) = rnf img
rnf (ImageCMYK8 img) = rnf img
rnf (ImageCMYK16 img) = rnf img
type Pixel8 = Word8
type Pixel16 = Word16
type Pixel32 = Word32
type PixelF = Float
data PixelYA8 = PixelYA8 {-# UNPACK #-} !Pixel8
{-# UNPACK #-} !Pixel8
deriving (Eq, Ord, Show, Typeable)
data PixelYA16 = PixelYA16 {-# UNPACK #-} !Pixel16
{-# UNPACK #-} !Pixel16
deriving (Eq, Ord, Show, Typeable)
data PixelRGB8 = PixelRGB8 {-# UNPACK #-} !Pixel8
{-# UNPACK #-} !Pixel8
{-# UNPACK #-} !Pixel8
deriving (Eq, Ord, Show, Typeable)
data PixelYCbCrK8 = PixelYCbCrK8 {-# UNPACK #-} !Pixel8
{-# UNPACK #-} !Pixel8
{-# UNPACK #-} !Pixel8
{-# UNPACK #-} !Pixel8
deriving (Eq, Ord, Show, Typeable)
data PixelRGB16 = PixelRGB16 {-# UNPACK #-} !Pixel16
{-# UNPACK #-} !Pixel16
{-# UNPACK #-} !Pixel16
deriving (Eq, Ord, Show, Typeable)
data PixelRGBF = PixelRGBF {-# UNPACK #-} !PixelF
{-# UNPACK #-} !PixelF
{-# UNPACK #-} !PixelF
deriving (Eq, Ord, Show, Typeable)
data PixelYCbCr8 = PixelYCbCr8 {-# UNPACK #-} !Pixel8
{-# UNPACK #-} !Pixel8
{-# UNPACK #-} !Pixel8
deriving (Eq, Ord, Show, Typeable)
data PixelCMYK8 = PixelCMYK8 {-# UNPACK #-} !Pixel8
{-# UNPACK #-} !Pixel8
{-# UNPACK #-} !Pixel8
{-# UNPACK #-} !Pixel8
deriving (Eq, Ord, Show, Typeable)
data PixelCMYK16 = PixelCMYK16 {-# UNPACK #-} !Pixel16
{-# UNPACK #-} !Pixel16
{-# UNPACK #-} !Pixel16
{-# UNPACK #-} !Pixel16
deriving (Eq, Ord, Show, Typeable)
data PixelRGBA8 = PixelRGBA8 {-# UNPACK #-} !Pixel8
{-# UNPACK #-} !Pixel8
{-# UNPACK #-} !Pixel8
{-# UNPACK #-} !Pixel8
deriving (Eq, Ord, Show, Typeable)
data PixelRGBA16 = PixelRGBA16 {-# UNPACK #-} !Pixel16
{-# UNPACK #-} !Pixel16
{-# UNPACK #-} !Pixel16
{-# UNPACK #-} !Pixel16
deriving (Eq, Ord, Show, Typeable)
class ( Storable (PixelBaseComponent a)
, Num (PixelBaseComponent a), Eq a ) => Pixel a where
type PixelBaseComponent a :: *
mixWith :: (Int -> PixelBaseComponent a -> PixelBaseComponent a -> PixelBaseComponent a)
-> a -> a -> a
mixWithAlpha :: (Int -> PixelBaseComponent a -> PixelBaseComponent a
-> PixelBaseComponent a)
-> (PixelBaseComponent a -> PixelBaseComponent a
-> PixelBaseComponent a)
-> a -> a -> a
{-# INLINE mixWithAlpha #-}
mixWithAlpha f _ = mixWith f
pixelOpacity :: a -> PixelBaseComponent a
componentCount :: a -> Int
colorMap :: (PixelBaseComponent a -> PixelBaseComponent a) -> a -> a
pixelBaseIndex :: Image a -> Int -> Int -> Int
pixelBaseIndex (Image { imageWidth = w }) x y =
(x + y * w) * componentCount (undefined :: a)
mutablePixelBaseIndex :: MutableImage s a -> Int -> Int -> Int
mutablePixelBaseIndex (MutableImage { mutableImageWidth = w }) x y =
(x + y * w) * componentCount (undefined :: a)
pixelAt :: Image a -> Int -> Int -> a
readPixel :: PrimMonad m => MutableImage (PrimState m) a -> Int -> Int -> m a
writePixel :: PrimMonad m => MutableImage (PrimState m) a -> Int -> Int -> a -> m ()
unsafePixelAt :: V.Vector (PixelBaseComponent a) -> Int -> a
unsafeReadPixel :: PrimMonad m => M.STVector (PrimState m) (PixelBaseComponent a) -> Int -> m a
unsafeWritePixel :: PrimMonad m => M.STVector (PrimState m) (PixelBaseComponent a) -> Int -> a -> m ()
class (Pixel a, Pixel b) => ColorConvertible a b where
promotePixel :: a -> b
promoteImage :: Image a -> Image b
promoteImage = pixelMap promotePixel
class (Pixel a, Pixel b) => ColorSpaceConvertible a b where
convertPixel :: a -> b
convertImage :: Image a -> Image b
convertImage = pixelMap convertPixel
generateMutableImage :: forall m px. (Pixel px, PrimMonad m)
=> (Int -> Int -> px)
-> Int
-> Int
-> m (MutableImage (PrimState m) px)
{-# INLINE generateMutableImage #-}
generateMutableImage f w h = MutableImage w h `liftM` generated where
compCount = componentCount (undefined :: px)
generated = do
arr <- M.new (w * h * compCount)
let lineGenerator _ !y | y >= h = return ()
lineGenerator !lineIdx y = column lineIdx 0
where column !idx !x | x >= w = lineGenerator idx $ y + 1
column idx x = do
unsafeWritePixel arr idx $ f x y
column (idx + compCount) $ x + 1
lineGenerator 0 0
return arr
generateImage :: forall px. (Pixel px)
=> (Int -> Int -> px)
-> Int
-> Int
-> Image px
{-# INLINE generateImage #-}
generateImage f w h = runST img where
img :: ST s (Image px)
img = generateMutableImage f w h >>= unsafeFreezeImage
withImage :: forall m pixel. (Pixel pixel, PrimMonad m)
=> Int
-> Int
-> (Int -> Int -> m pixel)
-> m (Image pixel)
withImage width height pixelGenerator = do
let pixelComponentCount = componentCount (undefined :: pixel)
arr <- M.new (width * height * pixelComponentCount)
let mutImage = MutableImage
{ mutableImageWidth = width
, mutableImageHeight = height
, mutableImageData = arr
}
let pixelPositions = [(x, y) | y <- [0 .. height-1], x <- [0..width-1]]
sequence_ [pixelGenerator x y >>= unsafeWritePixel arr idx
| ((x,y), idx) <- zip pixelPositions [0, pixelComponentCount ..]]
unsafeFreezeImage mutImage
generateFoldImage :: forall a acc. (Pixel a)
=> (acc -> Int -> Int -> (acc, a))
-> acc
-> Int
-> Int
-> (acc, Image a)
generateFoldImage f intialAcc w h =
(finalState, Image { imageWidth = w, imageHeight = h, imageData = generated })
where compCount = componentCount (undefined :: a)
(finalState, generated) = runST $ do
arr <- M.new (w * h * compCount)
let mutImage = MutableImage {
mutableImageWidth = w,
mutableImageHeight = h,
mutableImageData = arr }
foldResult <- foldM (\acc (x,y) -> do
let (acc', px) = f acc x y
writePixel mutImage x y px
return acc') intialAcc [(x,y) | y <- [0 .. h-1], x <- [0 .. w-1]]
frozen <- V.unsafeFreeze arr
return (foldResult, frozen)
{-# INLINE pixelFold #-}
pixelFold :: forall acc pixel. (Pixel pixel)
=> (acc -> Int -> Int -> pixel -> acc) -> acc -> Image pixel -> acc
pixelFold f initialAccumulator img@(Image { imageWidth = w, imageHeight = h }) =
columnFold 0 initialAccumulator 0
where
!compCount = componentCount (undefined :: pixel)
!vec = imageData img
lfold !y acc !x !idx
| x >= w = columnFold (y + 1) acc idx
| otherwise =
lfold y (f acc x y $ unsafePixelAt vec idx) (x + 1) (idx + compCount)
columnFold !y lineAcc !readIdx
| y >= h = lineAcc
| otherwise = lfold y lineAcc 0 readIdx
pixelFoldM :: (Pixel pixel, Monad m)
=> (acc -> Int -> Int -> pixel -> m acc)
-> acc
-> Image pixel
-> m acc
{-# INLINE pixelFoldM #-}
pixelFoldM action initialAccumulator img@(Image { imageWidth = w, imageHeight = h }) =
lineFold initialAccumulator h columnFold
where
pixelFolder y acc x = action acc x y $ pixelAt img x y
columnFold lineAcc y = lineFold lineAcc w (pixelFolder y)
pixelFoldMap :: forall m px. (Pixel px, Monoid m) => (px -> m) -> Image px -> m
pixelFoldMap f Image { imageWidth = w, imageHeight = h, imageData = vec } = folder 0
where
compCount = componentCount (undefined :: px)
maxi = w * h * compCount
folder idx | idx >= maxi = mempty
folder idx = f (unsafePixelAt vec idx) <> folder (idx + compCount)
pixelMap :: forall a b. (Pixel a, Pixel b)
=> (a -> b) -> Image a -> Image b
{-# SPECIALIZE INLINE pixelMap :: (PixelYCbCr8 -> PixelRGB8) -> Image PixelYCbCr8 -> Image PixelRGB8 #-}
{-# SPECIALIZE INLINE pixelMap :: (PixelRGB8 -> PixelYCbCr8) -> Image PixelRGB8 -> Image PixelYCbCr8 #-}
{-# SPECIALIZE INLINE pixelMap :: (PixelRGB8 -> PixelRGB8) -> Image PixelRGB8 -> Image PixelRGB8 #-}
{-# SPECIALIZE INLINE pixelMap :: (PixelRGB8 -> PixelRGBA8) -> Image PixelRGB8 -> Image PixelRGBA8 #-}
{-# SPECIALIZE INLINE pixelMap :: (PixelRGBA8 -> PixelRGBA8) -> Image PixelRGBA8 -> Image PixelRGBA8 #-}
{-# SPECIALIZE INLINE pixelMap :: (Pixel8 -> PixelRGB8) -> Image Pixel8 -> Image PixelRGB8 #-}
{-# SPECIALIZE INLINE pixelMap :: (Pixel8 -> Pixel8) -> Image Pixel8 -> Image Pixel8 #-}
pixelMap f Image { imageWidth = w, imageHeight = h, imageData = vec } =
Image w h pixels
where sourceComponentCount = componentCount (undefined :: a)
destComponentCount = componentCount (undefined :: b)
pixels = runST $ do
newArr <- M.new (w * h * destComponentCount)
let lineMapper _ _ y | y >= h = return ()
lineMapper readIdxLine writeIdxLine y = colMapper readIdxLine writeIdxLine 0
where colMapper readIdx writeIdx x
| x >= w = lineMapper readIdx writeIdx $ y + 1
| otherwise = do
unsafeWritePixel newArr writeIdx . f $ unsafePixelAt vec readIdx
colMapper (readIdx + sourceComponentCount)
(writeIdx + destComponentCount)
(x + 1)
lineMapper 0 0 0
V.unsafeFreeze newArr
newtype GenST a = GenST { genAction :: forall s. ST s (M.STVector s a) }
type Traversal s t a b =
forall f. Applicative f => (a -> f b) -> s -> f t
writePx :: Pixel px
=> Int -> GenST (PixelBaseComponent px) -> px -> GenST (PixelBaseComponent px)
{-# INLINE writePx #-}
writePx idx act px = GenST $ do
vec <- genAction act
unsafeWritePixel vec idx px
return vec
freezeGenST :: Pixel px
=> Int -> Int -> GenST (PixelBaseComponent px) -> Image px
freezeGenST w h act =
Image w h (runST (genAction act >>= V.unsafeFreeze))
imagePixels :: forall pxa pxb. (Pixel pxa, Pixel pxb)
=> Traversal (Image pxa) (Image pxb) pxa pxb
{-# INLINE imagePixels #-}
imagePixels f Image { imageWidth = w, imageHeight = h, imageData = vec } =
freezeGenST w h <$> pixels
where
sourceComponentCount = componentCount (undefined :: pxa)
destComponentCount = componentCount (undefined :: pxb)
maxi = w * h * sourceComponentCount
pixels =
go (pure $ GenST $ M.new (w * h * destComponentCount)) 0 0
go act readIdx _ | readIdx >= maxi = act
go act readIdx writeIdx =
go newAct (readIdx + sourceComponentCount) (writeIdx + destComponentCount)
where
px = f (unsafePixelAt vec readIdx)
newAct = writePx writeIdx <$> act <*> px
imageIPixels :: forall pxa pxb. (Pixel pxa, Pixel pxb)
=> Traversal (Image pxa) (Image pxb) (Int, Int, pxa) pxb
{-# INLINE imageIPixels #-}
imageIPixels f Image { imageWidth = w, imageHeight = h, imageData = vec } =
freezeGenST w h <$> pixels
where
sourceComponentCount = componentCount (undefined :: pxa)
destComponentCount = componentCount (undefined :: pxb)
pixels =
lineMapper (pure $ GenST $ M.new (w * h * destComponentCount)) 0 0 0
lineMapper act _ _ y | y >= h = act
lineMapper act readIdxLine writeIdxLine y =
go act readIdxLine writeIdxLine 0
where
go cact readIdx writeIdx x
| x >= w = lineMapper cact readIdx writeIdx $ y + 1
| otherwise = do
let px = f (x, y, unsafePixelAt vec readIdx)
go (writePx writeIdx <$> cact <*> px)
(readIdx + sourceComponentCount)
(writeIdx + destComponentCount)
(x + 1)
pixelMapXY :: forall a b. (Pixel a, Pixel b)
=> (Int -> Int -> a -> b) -> Image a -> Image b
{-# SPECIALIZE INLINE pixelMapXY :: (Int -> Int -> PixelYCbCr8 -> PixelRGB8)
-> Image PixelYCbCr8 -> Image PixelRGB8 #-}
{-# SPECIALIZE INLINE pixelMapXY :: (Int -> Int -> PixelRGB8 -> PixelYCbCr8)
-> Image PixelRGB8 -> Image PixelYCbCr8 #-}
{-# SPECIALIZE INLINE pixelMapXY :: (Int -> Int -> PixelRGB8 -> PixelRGB8)
-> Image PixelRGB8 -> Image PixelRGB8 #-}
{-# SPECIALIZE INLINE pixelMapXY :: (Int -> Int -> PixelRGB8 -> PixelRGBA8)
-> Image PixelRGB8 -> Image PixelRGBA8 #-}
{-# SPECIALIZE INLINE pixelMapXY :: (Int -> Int -> PixelRGBA8 -> PixelRGBA8)
-> Image PixelRGBA8 -> Image PixelRGBA8 #-}
{-# SPECIALIZE INLINE pixelMapXY :: (Int -> Int -> Pixel8 -> PixelRGB8)
-> Image Pixel8 -> Image PixelRGB8 #-}
pixelMapXY f Image { imageWidth = w, imageHeight = h, imageData = vec } =
Image w h pixels
where sourceComponentCount = componentCount (undefined :: a)
destComponentCount = componentCount (undefined :: b)
pixels = runST $ do
newArr <- M.new (w * h * destComponentCount)
let lineMapper _ _ y | y >= h = return ()
lineMapper readIdxLine writeIdxLine y = colMapper readIdxLine writeIdxLine 0
where colMapper readIdx writeIdx x
| x >= w = lineMapper readIdx writeIdx $ y + 1
| otherwise = do
unsafeWritePixel newArr writeIdx . f x y $ unsafePixelAt vec readIdx
colMapper (readIdx + sourceComponentCount)
(writeIdx + destComponentCount)
(x + 1)
lineMapper 0 0 0
V.unsafeFreeze newArr
zipPixelComponent3
:: forall px. ( V.Storable (PixelBaseComponent px))
=> (PixelBaseComponent px -> PixelBaseComponent px -> PixelBaseComponent px
-> PixelBaseComponent px)
-> Image px -> Image px -> Image px -> Image px
{-# INLINE zipPixelComponent3 #-}
zipPixelComponent3 f i1@(Image { imageWidth = w, imageHeight = h }) i2 i3
| not isDimensionEqual = error "Different image size zipPairwisePixelComponent"
| otherwise = Image { imageWidth = w
, imageHeight = h
, imageData = V.zipWith3 f data1 data2 data3
}
where data1 = imageData i1
data2 = imageData i2
data3 = imageData i3
isDimensionEqual =
w == imageWidth i2 && w == imageWidth i3 &&
h == imageHeight i2 && h == imageHeight i3
class (Pixel a, Pixel (PixelBaseComponent a)) => LumaPlaneExtractable a where
computeLuma :: a -> PixelBaseComponent a
extractLumaPlane :: Image a -> Image (PixelBaseComponent a)
extractLumaPlane = pixelMap computeLuma
instance LumaPlaneExtractable Pixel8 where
{-# INLINE computeLuma #-}
computeLuma = id
extractLumaPlane = id
instance LumaPlaneExtractable Pixel16 where
{-# INLINE computeLuma #-}
computeLuma = id
extractLumaPlane = id
instance LumaPlaneExtractable Pixel32 where
{-# INLINE computeLuma #-}
computeLuma = id
extractLumaPlane = id
instance LumaPlaneExtractable PixelF where
{-# INLINE computeLuma #-}
computeLuma = id
extractLumaPlane = id
instance LumaPlaneExtractable PixelRGBF where
{-# INLINE computeLuma #-}
computeLuma (PixelRGBF r g b) =
0.3 * r + 0.59 * g + 0.11 * b
instance LumaPlaneExtractable PixelRGBA8 where
{-# INLINE computeLuma #-}
computeLuma (PixelRGBA8 r g b _) =
floor $ (0.3 :: Double) * fromIntegral r
+ 0.59 * fromIntegral g
+ 0.11 * fromIntegral b
instance LumaPlaneExtractable PixelYCbCr8 where
{-# INLINE computeLuma #-}
computeLuma (PixelYCbCr8 y _ _) = y
extractLumaPlane = extractComponent PlaneLuma
instance (Pixel a) => ColorConvertible a a where
{-# INLINE promotePixel #-}
promotePixel = id
{-# INLINE promoteImage #-}
promoteImage = id
instance Pixel Pixel8 where
type PixelBaseComponent Pixel8 = Word8
{-# INLINE pixelOpacity #-}
pixelOpacity = const maxBound
{-# INLINE mixWith #-}
mixWith f = f 0
{-# INLINE colorMap #-}
colorMap f = f
{-# INLINE componentCount #-}
componentCount _ = 1
{-# INLINE pixelAt #-}
pixelAt (Image { imageWidth = w, imageData = arr }) x y = arr ! (x + y * w)
{-# INLINE readPixel #-}
readPixel image@(MutableImage { mutableImageData = arr }) x y =
arr `M.read` mutablePixelBaseIndex image x y
{-# INLINE writePixel #-}
writePixel image@(MutableImage { mutableImageData = arr }) x y =
arr `M.write` mutablePixelBaseIndex image x y
{-# INLINE unsafePixelAt #-}
unsafePixelAt = V.unsafeIndex
{-# INLINE unsafeReadPixel #-}
unsafeReadPixel = M.unsafeRead
{-# INLINE unsafeWritePixel #-}
unsafeWritePixel = M.unsafeWrite
instance ColorConvertible Pixel8 PixelYA8 where
{-# INLINE promotePixel #-}
promotePixel c = PixelYA8 c 255
instance ColorConvertible Pixel8 PixelF where
{-# INLINE promotePixel #-}
promotePixel c = fromIntegral c / 255.0
instance ColorConvertible Pixel8 Pixel16 where
{-# INLINE promotePixel #-}
promotePixel c = fromIntegral c * 257
instance ColorConvertible Pixel8 PixelRGB8 where
{-# INLINE promotePixel #-}
promotePixel c = PixelRGB8 c c c
instance ColorConvertible Pixel8 PixelRGBA8 where
{-# INLINE promotePixel #-}
promotePixel c = PixelRGBA8 c c c 255
instance Pixel Pixel16 where
type PixelBaseComponent Pixel16 = Word16
{-# INLINE pixelOpacity #-}
pixelOpacity = const maxBound
{-# INLINE mixWith #-}
mixWith f = f 0
{-# INLINE colorMap #-}
colorMap f = f
{-# INLINE componentCount #-}
componentCount _ = 1
{-# INLINE pixelAt #-}
pixelAt (Image { imageWidth = w, imageData = arr }) x y = arr ! (x + y * w)
{-# INLINE readPixel #-}
readPixel image@(MutableImage { mutableImageData = arr }) x y =
arr `M.read` mutablePixelBaseIndex image x y
{-# INLINE writePixel #-}
writePixel image@(MutableImage { mutableImageData = arr }) x y =
arr `M.write` mutablePixelBaseIndex image x y
{-# INLINE unsafePixelAt #-}
unsafePixelAt = V.unsafeIndex
{-# INLINE unsafeReadPixel #-}
unsafeReadPixel = M.unsafeRead
{-# INLINE unsafeWritePixel #-}
unsafeWritePixel = M.unsafeWrite
instance ColorConvertible Pixel16 PixelYA16 where
{-# INLINE promotePixel #-}
promotePixel c = PixelYA16 c maxBound
instance ColorConvertible Pixel16 PixelRGB16 where
{-# INLINE promotePixel #-}
promotePixel c = PixelRGB16 c c c
instance ColorConvertible Pixel16 PixelRGBA16 where
{-# INLINE promotePixel #-}
promotePixel c = PixelRGBA16 c c c maxBound
instance Pixel Pixel32 where
type PixelBaseComponent Pixel32 = Word32
{-# INLINE pixelOpacity #-}
pixelOpacity = const maxBound
{-# INLINE mixWith #-}
mixWith f = f 0
{-# INLINE colorMap #-}
colorMap f = f
{-# INLINE componentCount #-}
componentCount _ = 1
{-# INLINE pixelAt #-}
pixelAt (Image { imageWidth = w, imageData = arr }) x y = arr ! (x + y * w)
{-# INLINE readPixel #-}
readPixel image@(MutableImage { mutableImageData = arr }) x y =
arr `M.read` mutablePixelBaseIndex image x y
{-# INLINE writePixel #-}
writePixel image@(MutableImage { mutableImageData = arr }) x y =
arr `M.write` mutablePixelBaseIndex image x y
{-# INLINE unsafePixelAt #-}
unsafePixelAt = V.unsafeIndex
{-# INLINE unsafeReadPixel #-}
unsafeReadPixel = M.unsafeRead
{-# INLINE unsafeWritePixel #-}
unsafeWritePixel = M.unsafeWrite
instance Pixel PixelF where
type PixelBaseComponent PixelF = Float
{-# INLINE pixelOpacity #-}
pixelOpacity = const 1.0
{-# INLINE mixWith #-}
mixWith f = f 0
{-# INLINE colorMap #-}
colorMap f = f
{-# INLINE componentCount #-}
componentCount _ = 1
{-# INLINE pixelAt #-}
pixelAt (Image { imageWidth = w, imageData = arr }) x y =
arr ! (x + y * w)
{-# INLINE readPixel #-}
readPixel image@(MutableImage { mutableImageData = arr }) x y =
arr `M.read` mutablePixelBaseIndex image x y
{-# INLINE writePixel #-}
writePixel image@(MutableImage { mutableImageData = arr }) x y =
arr `M.write` mutablePixelBaseIndex image x y
{-# INLINE unsafePixelAt #-}
unsafePixelAt = V.unsafeIndex
{-# INLINE unsafeReadPixel #-}
unsafeReadPixel = M.unsafeRead
{-# INLINE unsafeWritePixel #-}
unsafeWritePixel = M.unsafeWrite
instance ColorConvertible PixelF PixelRGBF where
{-# INLINE promotePixel #-}
promotePixel c = PixelRGBF c c c
instance Pixel PixelYA8 where
type PixelBaseComponent PixelYA8 = Word8
{-# INLINE pixelOpacity #-}
pixelOpacity (PixelYA8 _ a) = a
{-# INLINE mixWith #-}
mixWith f (PixelYA8 ya aa) (PixelYA8 yb ab) =
PixelYA8 (f 0 ya yb) (f 1 aa ab)
{-# INLINE colorMap #-}
colorMap f (PixelYA8 y a) = PixelYA8 (f y) (f a)
{-# INLINE componentCount #-}
componentCount _ = 2
{-# INLINE pixelAt #-}
pixelAt image@(Image { imageData = arr }) x y =
PixelYA8 (arr ! (baseIdx + 0)) (arr ! (baseIdx + 1))
where baseIdx = pixelBaseIndex image x y
{-# INLINE readPixel #-}
readPixel image@(MutableImage { mutableImageData = arr }) x y = do
yv <- arr `M.read` baseIdx
av <- arr `M.read` (baseIdx + 1)
return $ PixelYA8 yv av
where baseIdx = mutablePixelBaseIndex image x y
{-# INLINE writePixel #-}
writePixel image@(MutableImage { mutableImageData = arr }) x y (PixelYA8 yv av) = do
let baseIdx = mutablePixelBaseIndex image x y
(arr `M.write` (baseIdx + 0)) yv
(arr `M.write` (baseIdx + 1)) av
{-# INLINE unsafePixelAt #-}
unsafePixelAt v idx =
PixelYA8 (V.unsafeIndex v idx) (V.unsafeIndex v $ idx + 1)
{-# INLINE unsafeReadPixel #-}
unsafeReadPixel vec idx =
PixelYA8 `liftM` M.unsafeRead vec idx `ap` M.unsafeRead vec (idx + 1)
{-# INLINE unsafeWritePixel #-}
unsafeWritePixel v idx (PixelYA8 y a) =
M.unsafeWrite v idx y >> M.unsafeWrite v (idx + 1) a
instance ColorConvertible PixelYA8 PixelRGB8 where
{-# INLINE promotePixel #-}
promotePixel (PixelYA8 y _) = PixelRGB8 y y y
instance ColorConvertible PixelYA8 PixelRGBA8 where
{-# INLINE promotePixel #-}
promotePixel (PixelYA8 y a) = PixelRGBA8 y y y a
instance ColorPlane PixelYA8 PlaneLuma where
toComponentIndex _ _ = 0
instance ColorPlane PixelYA8 PlaneAlpha where
toComponentIndex _ _ = 1
instance TransparentPixel PixelYA8 Pixel8 where
{-# INLINE dropTransparency #-}
dropTransparency (PixelYA8 y _) = y
{-# INLINE getTransparency #-}
getTransparency (PixelYA8 _ a) = a
instance LumaPlaneExtractable PixelYA8 where
{-# INLINE computeLuma #-}
computeLuma (PixelYA8 y _) = y
extractLumaPlane = extractComponent PlaneLuma
instance Pixel PixelYA16 where
type PixelBaseComponent PixelYA16 = Word16
{-# INLINE pixelOpacity #-}
pixelOpacity (PixelYA16 _ a) = a
{-# INLINE mixWith #-}
mixWith f (PixelYA16 ya aa) (PixelYA16 yb ab) =
PixelYA16 (f 0 ya yb) (f 1 aa ab)
{-# INLINE mixWithAlpha #-}
mixWithAlpha f fa (PixelYA16 ya aa) (PixelYA16 yb ab) =
PixelYA16 (f 0 ya yb) (fa aa ab)
{-# INLINE colorMap #-}
colorMap f (PixelYA16 y a) = PixelYA16 (f y) (f a)
{-# INLINE componentCount #-}
componentCount _ = 2
{-# INLINE pixelAt #-}
pixelAt image@(Image { imageData = arr }) x y = PixelYA16 (arr ! (baseIdx + 0))
(arr ! (baseIdx + 1))
where baseIdx = pixelBaseIndex image x y
{-# INLINE readPixel #-}
readPixel image@(MutableImage { mutableImageData = arr }) x y = do
yv <- arr `M.read` baseIdx
av <- arr `M.read` (baseIdx + 1)
return $ PixelYA16 yv av
where baseIdx = mutablePixelBaseIndex image x y
{-# INLINE writePixel #-}
writePixel image@(MutableImage { mutableImageData = arr }) x y (PixelYA16 yv av) = do
let baseIdx = mutablePixelBaseIndex image x y
(arr `M.write` (baseIdx + 0)) yv
(arr `M.write` (baseIdx + 1)) av
{-# INLINE unsafePixelAt #-}
unsafePixelAt v idx =
PixelYA16 (V.unsafeIndex v idx) (V.unsafeIndex v $ idx + 1)
{-# INLINE unsafeReadPixel #-}
unsafeReadPixel vec idx =
PixelYA16 `liftM` M.unsafeRead vec idx `ap` M.unsafeRead vec (idx + 1)
{-# INLINE unsafeWritePixel #-}
unsafeWritePixel v idx (PixelYA16 y a) =
M.unsafeWrite v idx y >> M.unsafeWrite v (idx + 1) a
instance ColorConvertible PixelYA16 PixelRGBA16 where
{-# INLINE promotePixel #-}
promotePixel (PixelYA16 y a) = PixelRGBA16 y y y a
instance ColorPlane PixelYA16 PlaneLuma where
toComponentIndex _ _ = 0
instance ColorPlane PixelYA16 PlaneAlpha where
toComponentIndex _ _ = 1
instance TransparentPixel PixelYA16 Pixel16 where
{-# INLINE dropTransparency #-}
dropTransparency (PixelYA16 y _) = y
{-# INLINE getTransparency #-}
getTransparency (PixelYA16 _ a) = a
instance Pixel PixelRGBF where
type PixelBaseComponent PixelRGBF = PixelF
{-# INLINE pixelOpacity #-}
pixelOpacity = const 1.0
{-# INLINE mixWith #-}
mixWith f (PixelRGBF ra ga ba) (PixelRGBF rb gb bb) =
PixelRGBF (f 0 ra rb) (f 1 ga gb) (f 2 ba bb)
{-# INLINE colorMap #-}
colorMap f (PixelRGBF r g b) = PixelRGBF (f r) (f g) (f b)
{-# INLINE componentCount #-}
componentCount _ = 3
{-# INLINE pixelAt #-}
pixelAt image@(Image { imageData = arr }) x y = PixelRGBF (arr ! (baseIdx + 0))
(arr ! (baseIdx + 1))
(arr ! (baseIdx + 2))
where baseIdx = pixelBaseIndex image x y
{-# INLINE readPixel #-}
readPixel image@(MutableImage { mutableImageData = arr }) x y = do
rv <- arr `M.read` baseIdx
gv <- arr `M.read` (baseIdx + 1)
bv <- arr `M.read` (baseIdx + 2)
return $ PixelRGBF rv gv bv
where baseIdx = mutablePixelBaseIndex image x y
{-# INLINE writePixel #-}
writePixel image@(MutableImage { mutableImageData = arr }) x y (PixelRGBF rv gv bv) = do
let baseIdx = mutablePixelBaseIndex image x y
(arr `M.write` (baseIdx + 0)) rv
(arr `M.write` (baseIdx + 1)) gv
(arr `M.write` (baseIdx + 2)) bv
{-# INLINE unsafePixelAt #-}
unsafePixelAt v idx =
PixelRGBF (V.unsafeIndex v idx) (V.unsafeIndex v $ idx + 1) (V.unsafeIndex v $ idx + 2)
{-# INLINE unsafeReadPixel #-}
unsafeReadPixel vec idx =
PixelRGBF `liftM` M.unsafeRead vec idx
`ap` M.unsafeRead vec (idx + 1)
`ap` M.unsafeRead vec (idx + 2)
{-# INLINE unsafeWritePixel #-}
unsafeWritePixel v idx (PixelRGBF r g b) =
M.unsafeWrite v idx r >> M.unsafeWrite v (idx + 1) g
>> M.unsafeWrite v (idx + 2) b
instance ColorPlane PixelRGBF PlaneRed where
toComponentIndex _ _ = 0
instance ColorPlane PixelRGBF PlaneGreen where
toComponentIndex _ _ = 1
instance ColorPlane PixelRGBF PlaneBlue where
toComponentIndex _ _ = 2
instance Pixel PixelRGB16 where
type PixelBaseComponent PixelRGB16 = Pixel16
{-# INLINE pixelOpacity #-}
pixelOpacity = const maxBound
{-# INLINE mixWith #-}
mixWith f (PixelRGB16 ra ga ba) (PixelRGB16 rb gb bb) =
PixelRGB16 (f 0 ra rb) (f 1 ga gb) (f 2 ba bb)
{-# INLINE colorMap #-}
colorMap f (PixelRGB16 r g b) = PixelRGB16 (f r) (f g) (f b)
{-# INLINE componentCount #-}
componentCount _ = 3
{-# INLINE pixelAt #-}
pixelAt image@(Image { imageData = arr }) x y = PixelRGB16 (arr ! (baseIdx + 0))
(arr ! (baseIdx + 1))
(arr ! (baseIdx + 2))
where baseIdx = pixelBaseIndex image x y
{-# INLINE readPixel #-}
readPixel image@(MutableImage { mutableImageData = arr }) x y = do
rv <- arr `M.read` baseIdx
gv <- arr `M.read` (baseIdx + 1)
bv <- arr `M.read` (baseIdx + 2)
return $ PixelRGB16 rv gv bv
where baseIdx = mutablePixelBaseIndex image x y
{-# INLINE writePixel #-}
writePixel image@(MutableImage { mutableImageData = arr }) x y (PixelRGB16 rv gv bv) = do
let baseIdx = mutablePixelBaseIndex image x y
(arr `M.write` (baseIdx + 0)) rv
(arr `M.write` (baseIdx + 1)) gv
(arr `M.write` (baseIdx + 2)) bv
{-# INLINE unsafePixelAt #-}
unsafePixelAt v idx =
PixelRGB16 (V.unsafeIndex v idx) (V.unsafeIndex v $ idx + 1) (V.unsafeIndex v $ idx + 2)
{-# INLINE unsafeReadPixel #-}
unsafeReadPixel vec idx =
PixelRGB16 `liftM` M.unsafeRead vec idx
`ap` M.unsafeRead vec (idx + 1)
`ap` M.unsafeRead vec (idx + 2)
{-# INLINE unsafeWritePixel #-}
unsafeWritePixel v idx (PixelRGB16 r g b) =
M.unsafeWrite v idx r >> M.unsafeWrite v (idx + 1) g
>> M.unsafeWrite v (idx + 2) b
instance ColorPlane PixelRGB16 PlaneRed where
toComponentIndex _ _ = 0
instance ColorPlane PixelRGB16 PlaneGreen where
toComponentIndex _ _ = 1
instance ColorPlane PixelRGB16 PlaneBlue where
toComponentIndex _ _ = 2
instance ColorSpaceConvertible PixelRGB16 PixelCMYK16 where
{-# INLINE convertPixel #-}
convertPixel (PixelRGB16 r g b) = integralRGBToCMYK PixelCMYK16 (r, g, b)
instance ColorConvertible PixelRGB16 PixelRGBA16 where
{-# INLINE promotePixel #-}
promotePixel (PixelRGB16 r g b) = PixelRGBA16 r g b maxBound
instance LumaPlaneExtractable PixelRGB16 where
{-# INLINE computeLuma #-}
computeLuma (PixelRGB16 r g b) =
floor $ (0.3 :: Double) * fromIntegral r
+ 0.59 * fromIntegral g
+ 0.11 * fromIntegral b
instance Pixel PixelRGB8 where
type PixelBaseComponent PixelRGB8 = Word8
{-# INLINE pixelOpacity #-}
pixelOpacity = const maxBound
{-# INLINE mixWith #-}
mixWith f (PixelRGB8 ra ga ba) (PixelRGB8 rb gb bb) =
PixelRGB8 (f 0 ra rb) (f 1 ga gb) (f 2 ba bb)
{-# INLINE colorMap #-}
colorMap f (PixelRGB8 r g b) = PixelRGB8 (f r) (f g) (f b)
{-# INLINE componentCount #-}
componentCount _ = 3
{-# INLINE pixelAt #-}
pixelAt image@(Image { imageData = arr }) x y = PixelRGB8 (arr ! (baseIdx + 0))
(arr ! (baseIdx + 1))
(arr ! (baseIdx + 2))
where baseIdx = pixelBaseIndex image x y
{-# INLINE readPixel #-}
readPixel image@(MutableImage { mutableImageData = arr }) x y = do
rv <- arr `M.read` baseIdx
gv <- arr `M.read` (baseIdx + 1)
bv <- arr `M.read` (baseIdx + 2)
return $ PixelRGB8 rv gv bv
where baseIdx = mutablePixelBaseIndex image x y
{-# INLINE writePixel #-}
writePixel image@(MutableImage { mutableImageData = arr }) x y (PixelRGB8 rv gv bv) = do
let baseIdx = mutablePixelBaseIndex image x y
(arr `M.write` (baseIdx + 0)) rv
(arr `M.write` (baseIdx + 1)) gv
(arr `M.write` (baseIdx + 2)) bv
{-# INLINE unsafePixelAt #-}
unsafePixelAt v idx =
PixelRGB8 (V.unsafeIndex v idx) (V.unsafeIndex v $ idx + 1) (V.unsafeIndex v $ idx + 2)
{-# INLINE unsafeReadPixel #-}
unsafeReadPixel vec idx =
PixelRGB8 `liftM` M.unsafeRead vec idx
`ap` M.unsafeRead vec (idx + 1)
`ap` M.unsafeRead vec (idx + 2)
{-# INLINE unsafeWritePixel #-}
unsafeWritePixel v idx (PixelRGB8 r g b) =
M.unsafeWrite v idx r >> M.unsafeWrite v (idx + 1) g
>> M.unsafeWrite v (idx + 2) b
instance ColorConvertible PixelRGB8 PixelRGBA8 where
{-# INLINE promotePixel #-}
promotePixel (PixelRGB8 r g b) = PixelRGBA8 r g b maxBound
instance ColorConvertible PixelRGB8 PixelRGBF where
{-# INLINE promotePixel #-}
promotePixel (PixelRGB8 r g b) = PixelRGBF (toF r) (toF g) (toF b)
where toF v = fromIntegral v / 255.0
instance ColorConvertible PixelRGB8 PixelRGB16 where
{-# INLINE promotePixel #-}
promotePixel (PixelRGB8 r g b) = PixelRGB16 (promotePixel r) (promotePixel g) (promotePixel b)
instance ColorConvertible PixelRGB8 PixelRGBA16 where
{-# INLINE promotePixel #-}
promotePixel (PixelRGB8 r g b) = PixelRGBA16 (promotePixel r) (promotePixel g) (promotePixel b) maxBound
instance ColorPlane PixelRGB8 PlaneRed where
toComponentIndex _ _ = 0
instance ColorPlane PixelRGB8 PlaneGreen where
toComponentIndex _ _ = 1
instance ColorPlane PixelRGB8 PlaneBlue where
toComponentIndex _ _ = 2
instance LumaPlaneExtractable PixelRGB8 where
{-# INLINE computeLuma #-}
computeLuma (PixelRGB8 r g b) =
floor $ (0.3 :: Double) * fromIntegral r
+ 0.59 * fromIntegral g
+ 0.11 * fromIntegral b
instance Pixel PixelRGBA8 where
type PixelBaseComponent PixelRGBA8 = Word8
{-# INLINE pixelOpacity #-}
pixelOpacity (PixelRGBA8 _ _ _ a) = a
{-# INLINE mixWith #-}
mixWith f (PixelRGBA8 ra ga ba aa) (PixelRGBA8 rb gb bb ab) =
PixelRGBA8 (f 0 ra rb) (f 1 ga gb) (f 2 ba bb) (f 3 aa ab)
{-# INLINE mixWithAlpha #-}
mixWithAlpha f fa (PixelRGBA8 ra ga ba aa) (PixelRGBA8 rb gb bb ab) =
PixelRGBA8 (f 0 ra rb) (f 1 ga gb) (f 2 ba bb) (fa aa ab)
{-# INLINE colorMap #-}
colorMap f (PixelRGBA8 r g b a) = PixelRGBA8 (f r) (f g) (f b) (f a)
{-# INLINE componentCount #-}
componentCount _ = 4
{-# INLINE pixelAt #-}
pixelAt image@(Image { imageData = arr }) x y = PixelRGBA8 (arr ! (baseIdx + 0))
(arr ! (baseIdx + 1))
(arr ! (baseIdx + 2))
(arr ! (baseIdx + 3))
where baseIdx = pixelBaseIndex image x y
{-# INLINE readPixel #-}
readPixel image@(MutableImage { mutableImageData = arr }) x y = do
rv <- arr `M.read` baseIdx
gv <- arr `M.read` (baseIdx + 1)
bv <- arr `M.read` (baseIdx + 2)
av <- arr `M.read` (baseIdx + 3)
return $ PixelRGBA8 rv gv bv av
where baseIdx = mutablePixelBaseIndex image x y
{-# INLINE writePixel #-}
writePixel image@(MutableImage { mutableImageData = arr }) x y (PixelRGBA8 rv gv bv av) = do
let baseIdx = mutablePixelBaseIndex image x y
(arr `M.write` (baseIdx + 0)) rv
(arr `M.write` (baseIdx + 1)) gv
(arr `M.write` (baseIdx + 2)) bv
(arr `M.write` (baseIdx + 3)) av
{-# INLINE unsafePixelAt #-}
unsafePixelAt v idx =
PixelRGBA8 (V.unsafeIndex v idx)
(V.unsafeIndex v $ idx + 1)
(V.unsafeIndex v $ idx + 2)
(V.unsafeIndex v $ idx + 3)
{-# INLINE unsafeReadPixel #-}
unsafeReadPixel vec idx =
PixelRGBA8 `liftM` M.unsafeRead vec idx
`ap` M.unsafeRead vec (idx + 1)
`ap` M.unsafeRead vec (idx + 2)
`ap` M.unsafeRead vec (idx + 3)
{-# INLINE unsafeWritePixel #-}
unsafeWritePixel v idx (PixelRGBA8 r g b a) =
M.unsafeWrite v idx r >> M.unsafeWrite v (idx + 1) g
>> M.unsafeWrite v (idx + 2) b
>> M.unsafeWrite v (idx + 3) a
instance ColorConvertible PixelRGBA8 PixelRGBA16 where
{-# INLINE promotePixel #-}
promotePixel (PixelRGBA8 r g b a) = PixelRGBA16 (promotePixel r) (promotePixel g) (promotePixel b) (promotePixel a)
instance ColorPlane PixelRGBA8 PlaneRed where
toComponentIndex _ _ = 0
instance ColorPlane PixelRGBA8 PlaneGreen where
toComponentIndex _ _ = 1
instance ColorPlane PixelRGBA8 PlaneBlue where
toComponentIndex _ _ = 2
instance ColorPlane PixelRGBA8 PlaneAlpha where
toComponentIndex _ _ = 3
instance Pixel PixelRGBA16 where
type PixelBaseComponent PixelRGBA16 = Pixel16
{-# INLINE pixelOpacity #-}
pixelOpacity (PixelRGBA16 _ _ _ a) = a
{-# INLINE mixWith #-}
mixWith f (PixelRGBA16 ra ga ba aa) (PixelRGBA16 rb gb bb ab) =
PixelRGBA16 (f 0 ra rb) (f 1 ga gb) (f 2 ba bb) (f 3 aa ab)
{-# INLINE mixWithAlpha #-}
mixWithAlpha f fa (PixelRGBA16 ra ga ba aa) (PixelRGBA16 rb gb bb ab) =
PixelRGBA16 (f 0 ra rb) (f 1 ga gb) (f 2 ba bb) (fa aa ab)
{-# INLINE colorMap #-}
colorMap f (PixelRGBA16 r g b a) = PixelRGBA16 (f r) (f g) (f b) (f a)
{-# INLINE componentCount #-}
componentCount _ = 4
{-# INLINE pixelAt #-}
pixelAt image@(Image { imageData = arr }) x y =
PixelRGBA16 (arr ! (baseIdx + 0)) (arr ! (baseIdx + 1))
(arr ! (baseIdx + 2)) (arr ! (baseIdx + 3))
where baseIdx = pixelBaseIndex image x y
{-# INLINE readPixel #-}
readPixel image@(MutableImage { mutableImageData = arr }) x y = do
rv <- arr `M.read` baseIdx
gv <- arr `M.read` (baseIdx + 1)
bv <- arr `M.read` (baseIdx + 2)
av <- arr `M.read` (baseIdx + 3)
return $ PixelRGBA16 rv gv bv av
where baseIdx = mutablePixelBaseIndex image x y
{-# INLINE writePixel #-}
writePixel image@(MutableImage { mutableImageData = arr }) x y (PixelRGBA16 rv gv bv av) = do
let baseIdx = mutablePixelBaseIndex image x y
(arr `M.write` (baseIdx + 0)) rv
(arr `M.write` (baseIdx + 1)) gv
(arr `M.write` (baseIdx + 2)) bv
(arr `M.write` (baseIdx + 3)) av
{-# INLINE unsafePixelAt #-}
unsafePixelAt v idx =
PixelRGBA16 (V.unsafeIndex v idx)
(V.unsafeIndex v $ idx + 1)
(V.unsafeIndex v $ idx + 2)
(V.unsafeIndex v $ idx + 3)
{-# INLINE unsafeReadPixel #-}
unsafeReadPixel vec idx =
PixelRGBA16 `liftM` M.unsafeRead vec idx
`ap` M.unsafeRead vec (idx + 1)
`ap` M.unsafeRead vec (idx + 2)
`ap` M.unsafeRead vec (idx + 3)
{-# INLINE unsafeWritePixel #-}
unsafeWritePixel v idx (PixelRGBA16 r g b a) =
M.unsafeWrite v idx r >> M.unsafeWrite v (idx + 1) g
>> M.unsafeWrite v (idx + 2) b
>> M.unsafeWrite v (idx + 3) a
instance TransparentPixel PixelRGBA16 PixelRGB16 where
{-# INLINE dropTransparency #-}
dropTransparency (PixelRGBA16 r g b _) = PixelRGB16 r g b
{-# INLINE getTransparency #-}
getTransparency (PixelRGBA16 _ _ _ a) = a
instance ColorPlane PixelRGBA16 PlaneRed where
toComponentIndex _ _ = 0
instance ColorPlane PixelRGBA16 PlaneGreen where
toComponentIndex _ _ = 1
instance ColorPlane PixelRGBA16 PlaneBlue where
toComponentIndex _ _ = 2
instance ColorPlane PixelRGBA16 PlaneAlpha where
toComponentIndex _ _ = 3
instance Pixel PixelYCbCr8 where
type PixelBaseComponent PixelYCbCr8 = Word8
{-# INLINE pixelOpacity #-}
pixelOpacity = const maxBound
{-# INLINE mixWith #-}
mixWith f (PixelYCbCr8 ya cba cra) (PixelYCbCr8 yb cbb crb) =
PixelYCbCr8 (f 0 ya yb) (f 1 cba cbb) (f 2 cra crb)
{-# INLINE colorMap #-}
colorMap f (PixelYCbCr8 y cb cr) = PixelYCbCr8 (f y) (f cb) (f cr)
{-# INLINE componentCount #-}
componentCount _ = 3
{-# INLINE pixelAt #-}
pixelAt image@(Image { imageData = arr }) x y = PixelYCbCr8 (arr ! (baseIdx + 0))
(arr ! (baseIdx + 1))
(arr ! (baseIdx + 2))
where baseIdx = pixelBaseIndex image x y
{-# INLINE readPixel #-}
readPixel image@(MutableImage { mutableImageData = arr }) x y = do
yv <- arr `M.read` baseIdx
cbv <- arr `M.read` (baseIdx + 1)
crv <- arr `M.read` (baseIdx + 2)
return $ PixelYCbCr8 yv cbv crv
where baseIdx = mutablePixelBaseIndex image x y
{-# INLINE writePixel #-}
writePixel image@(MutableImage { mutableImageData = arr }) x y (PixelYCbCr8 yv cbv crv) = do
let baseIdx = mutablePixelBaseIndex image x y
(arr `M.write` (baseIdx + 0)) yv
(arr `M.write` (baseIdx + 1)) cbv
(arr `M.write` (baseIdx + 2)) crv
{-# INLINE unsafePixelAt #-}
unsafePixelAt v idx =
PixelYCbCr8 (V.unsafeIndex v idx) (V.unsafeIndex v $ idx + 1) (V.unsafeIndex v $ idx + 2)
{-# INLINE unsafeReadPixel #-}
unsafeReadPixel vec idx =
PixelYCbCr8 `liftM` M.unsafeRead vec idx
`ap` M.unsafeRead vec (idx + 1)
`ap` M.unsafeRead vec (idx + 2)
{-# INLINE unsafeWritePixel #-}
unsafeWritePixel v idx (PixelYCbCr8 y cb cr) =
M.unsafeWrite v idx y >> M.unsafeWrite v (idx + 1) cb
>> M.unsafeWrite v (idx + 2) cr
instance (Pixel a) => ColorSpaceConvertible a a where
convertPixel = id
convertImage = id
scaleBits, oneHalf :: Int
scaleBits = 16
oneHalf = 1 `unsafeShiftL` (scaleBits - 1)
fix :: Float -> Int
fix x = floor $ x * fromIntegral ((1 :: Int) `unsafeShiftL` scaleBits) + 0.5
rYTab, gYTab, bYTab, rCbTab, gCbTab, bCbTab, gCrTab, bCrTab :: V.Vector Int
rYTab = V.fromListN 256 [fix 0.29900 * i | i <- [0..255] ]
gYTab = V.fromListN 256 [fix 0.58700 * i | i <- [0..255] ]
bYTab = V.fromListN 256 [fix 0.11400 * i + oneHalf | i <- [0..255] ]
rCbTab = V.fromListN 256 [(- fix 0.16874) * i | i <- [0..255] ]
gCbTab = V.fromListN 256 [(- fix 0.33126) * i | i <- [0..255] ]
bCbTab = V.fromListN 256 [fix 0.5 * i + (128 `unsafeShiftL` scaleBits) + oneHalf - 1| i <- [0..255] ]
gCrTab = V.fromListN 256 [(- fix 0.41869) * i | i <- [0..255] ]
bCrTab = V.fromListN 256 [(- fix 0.08131) * i | i <- [0..255] ]
instance ColorSpaceConvertible PixelRGB8 PixelYCbCr8 where
{-# INLINE convertPixel #-}
convertPixel (PixelRGB8 r g b) = PixelYCbCr8 (fromIntegral y) (fromIntegral cb) (fromIntegral cr)
where ri = fromIntegral r
gi = fromIntegral g
bi = fromIntegral b
y = (rYTab `V.unsafeIndex` ri + gYTab `V.unsafeIndex` gi + bYTab `V.unsafeIndex` bi) `unsafeShiftR` scaleBits
cb = (rCbTab `V.unsafeIndex` ri + gCbTab `V.unsafeIndex` gi + bCbTab `V.unsafeIndex` bi) `unsafeShiftR` scaleBits
cr = (bCbTab `V.unsafeIndex` ri + gCrTab `V.unsafeIndex` gi + bCrTab `V.unsafeIndex` bi) `unsafeShiftR` scaleBits
convertImage Image { imageWidth = w, imageHeight = h, imageData = d } = Image w h newData
where maxi = w * h
rY = fix 0.29900
gY = fix 0.58700
bY = fix 0.11400
rCb = - fix 0.16874
gCb = - fix 0.33126
bCb = fix 0.5
gCr = - fix 0.41869
bCr = - fix 0.08131
newData = runST $ do
block <- M.new $ maxi * 3
let traductor _ idx | idx >= maxi = return block
traductor readIdx idx = do
let ri = fromIntegral $ d `V.unsafeIndex` readIdx
gi = fromIntegral $ d `V.unsafeIndex` (readIdx + 1)
bi = fromIntegral $ d `V.unsafeIndex` (readIdx + 2)
y = (rY * ri + gY * gi + bY * bi + oneHalf) `unsafeShiftR` scaleBits
cb = (rCb * ri + gCb * gi + bCb * bi + (128 `unsafeShiftL` scaleBits) + oneHalf - 1) `unsafeShiftR` scaleBits
cr = (bCb * ri + (128 `unsafeShiftL` scaleBits) + oneHalf - 1+ gCr * gi + bCr * bi) `unsafeShiftR` scaleBits
(block `M.unsafeWrite` (readIdx + 0)) $ fromIntegral y
(block `M.unsafeWrite` (readIdx + 1)) $ fromIntegral cb
(block `M.unsafeWrite` (readIdx + 2)) $ fromIntegral cr
traductor (readIdx + 3) (idx + 1)
traductor 0 0 >>= V.freeze
crRTab, cbBTab, crGTab, cbGTab :: V.Vector Int
crRTab = V.fromListN 256 [(fix 1.40200 * x + oneHalf) `unsafeShiftR` scaleBits | x <- [-128 .. 127]]
cbBTab = V.fromListN 256 [(fix 1.77200 * x + oneHalf) `unsafeShiftR` scaleBits | x <- [-128 .. 127]]
crGTab = V.fromListN 256 [negate (fix 0.71414) * x | x <- [-128 .. 127]]
cbGTab = V.fromListN 256 [negate (fix 0.34414) * x + oneHalf | x <- [-128 .. 127]]
instance ColorSpaceConvertible PixelYCbCr8 PixelRGB8 where
{-# INLINE convertPixel #-}
convertPixel (PixelYCbCr8 y cb cr) = PixelRGB8 (clampWord8 r) (clampWord8 g) (clampWord8 b)
where clampWord8 = fromIntegral . max 0 . min 255
yi = fromIntegral y
cbi = fromIntegral cb
cri = fromIntegral cr
r = yi + crRTab `V.unsafeIndex` cri
g = yi + (cbGTab `V.unsafeIndex` cbi + crGTab `V.unsafeIndex` cri) `unsafeShiftR` scaleBits
b = yi + cbBTab `V.unsafeIndex` cbi
convertImage Image { imageWidth = w, imageHeight = h, imageData = d } = Image w h newData
where maxi = w * h
clampWord8 v | v < 0 = 0
| v > 255 = 255
| otherwise = fromIntegral v
newData = runST $ do
block <- M.new $ maxi * 3
let traductor _ idx | idx >= maxi = return block
traductor readIdx idx = do
let yi = fromIntegral $ d `V.unsafeIndex` readIdx
cbi = fromIntegral $ d `V.unsafeIndex` (readIdx + 1)
cri = fromIntegral $ d `V.unsafeIndex` (readIdx + 2)
r = yi + crRTab `V.unsafeIndex` cri
g = yi + (cbGTab `V.unsafeIndex` cbi + crGTab `V.unsafeIndex` cri) `unsafeShiftR` scaleBits
b = yi + cbBTab `V.unsafeIndex` cbi
(block `M.unsafeWrite` (readIdx + 0)) $ clampWord8 r
(block `M.unsafeWrite` (readIdx + 1)) $ clampWord8 g
(block `M.unsafeWrite` (readIdx + 2)) $ clampWord8 b
traductor (readIdx + 3) (idx + 1)
traductor 0 0 >>= V.freeze
instance ColorPlane PixelYCbCr8 PlaneLuma where
toComponentIndex _ _ = 0
instance ColorPlane PixelYCbCr8 PlaneCb where
toComponentIndex _ _ = 1
instance ColorPlane PixelYCbCr8 PlaneCr where
toComponentIndex _ _ = 2
instance Pixel PixelCMYK8 where
type PixelBaseComponent PixelCMYK8 = Word8
{-# INLINE pixelOpacity #-}
pixelOpacity = const maxBound
{-# INLINE mixWith #-}
mixWith f (PixelCMYK8 ca ma ya ka) (PixelCMYK8 cb mb yb kb) =
PixelCMYK8 (f 0 ca cb) (f 1 ma mb) (f 2 ya yb) (f 3 ka kb)
{-# INLINE colorMap #-}
colorMap f (PixelCMYK8 c m y k) = PixelCMYK8 (f c) (f m) (f y) (f k)
{-# INLINE componentCount #-}
componentCount _ = 4
{-# INLINE pixelAt #-}
pixelAt image@(Image { imageData = arr }) x y = PixelCMYK8 (arr ! (baseIdx + 0))
(arr ! (baseIdx + 1))
(arr ! (baseIdx + 2))
(arr ! (baseIdx + 3))
where baseIdx = pixelBaseIndex image x y
{-# INLINE readPixel #-}
readPixel image@(MutableImage { mutableImageData = arr }) x y = do
rv <- arr `M.read` baseIdx
gv <- arr `M.read` (baseIdx + 1)
bv <- arr `M.read` (baseIdx + 2)
av <- arr `M.read` (baseIdx + 3)
return $ PixelCMYK8 rv gv bv av
where baseIdx = mutablePixelBaseIndex image x y
{-# INLINE writePixel #-}
writePixel image@(MutableImage { mutableImageData = arr }) x y (PixelCMYK8 rv gv bv av) = do
let baseIdx = mutablePixelBaseIndex image x y
(arr `M.write` (baseIdx + 0)) rv
(arr `M.write` (baseIdx + 1)) gv
(arr `M.write` (baseIdx + 2)) bv
(arr `M.write` (baseIdx + 3)) av
{-# INLINE unsafePixelAt #-}
unsafePixelAt v idx =
PixelCMYK8 (V.unsafeIndex v idx)
(V.unsafeIndex v $ idx + 1)
(V.unsafeIndex v $ idx + 2)
(V.unsafeIndex v $ idx + 3)
{-# INLINE unsafeReadPixel #-}
unsafeReadPixel vec idx =
PixelCMYK8 `liftM` M.unsafeRead vec idx
`ap` M.unsafeRead vec (idx + 1)
`ap` M.unsafeRead vec (idx + 2)
`ap` M.unsafeRead vec (idx + 3)
{-# INLINE unsafeWritePixel #-}
unsafeWritePixel v idx (PixelCMYK8 r g b a) =
M.unsafeWrite v idx r >> M.unsafeWrite v (idx + 1) g
>> M.unsafeWrite v (idx + 2) b
>> M.unsafeWrite v (idx + 3) a
instance ColorSpaceConvertible PixelCMYK8 PixelRGB8 where
convertPixel (PixelCMYK8 c m y k) =
PixelRGB8 (clampWord8 r) (clampWord8 g) (clampWord8 b)
where
clampWord8 = fromIntegral . max 0 . min 255 . (`div` 255)
ik :: Int
ik = 255 - fromIntegral k
r = (255 - fromIntegral c) * ik
g = (255 - fromIntegral m) * ik
b = (255 - fromIntegral y) * ik
instance Pixel PixelYCbCrK8 where
type PixelBaseComponent PixelYCbCrK8 = Word8
{-# INLINE pixelOpacity #-}
pixelOpacity = const maxBound
{-# INLINE mixWith #-}
mixWith f (PixelYCbCrK8 ya cba cra ka) (PixelYCbCrK8 yb cbb crb kb) =
PixelYCbCrK8 (f 0 ya yb) (f 1 cba cbb) (f 2 cra crb) (f 3 ka kb)
{-# INLINE colorMap #-}
colorMap f (PixelYCbCrK8 y cb cr k) = PixelYCbCrK8 (f y) (f cb) (f cr) (f k)
{-# INLINE componentCount #-}
componentCount _ = 4
{-# INLINE pixelAt #-}
pixelAt image@(Image { imageData = arr }) x y =
PixelYCbCrK8 (arr ! (baseIdx + 0)) (arr ! (baseIdx + 1))
(arr ! (baseIdx + 2)) (arr ! (baseIdx + 3))
where baseIdx = pixelBaseIndex image x y
{-# INLINE readPixel #-}
readPixel image@(MutableImage { mutableImageData = arr }) x y = do
yv <- arr `M.read` baseIdx
cbv <- arr `M.read` (baseIdx + 1)
crv <- arr `M.read` (baseIdx + 2)
kv <- arr `M.read` (baseIdx + 3)
return $ PixelYCbCrK8 yv cbv crv kv
where baseIdx = mutablePixelBaseIndex image x y
{-# INLINE writePixel #-}
writePixel image@(MutableImage { mutableImageData = arr }) x y (PixelYCbCrK8 yv cbv crv kv) = do
let baseIdx = mutablePixelBaseIndex image x y
(arr `M.write` (baseIdx + 0)) yv
(arr `M.write` (baseIdx + 1)) cbv
(arr `M.write` (baseIdx + 2)) crv
(arr `M.write` (baseIdx + 3)) kv
{-# INLINE unsafePixelAt #-}
unsafePixelAt v idx =
PixelYCbCrK8 (V.unsafeIndex v idx)
(V.unsafeIndex v $ idx + 1)
(V.unsafeIndex v $ idx + 2)
(V.unsafeIndex v $ idx + 3)
{-# INLINE unsafeReadPixel #-}
unsafeReadPixel vec idx =
PixelYCbCrK8 `liftM` M.unsafeRead vec idx
`ap` M.unsafeRead vec (idx + 1)
`ap` M.unsafeRead vec (idx + 2)
`ap` M.unsafeRead vec (idx + 3)
{-# INLINE unsafeWritePixel #-}
unsafeWritePixel v idx (PixelYCbCrK8 y cb cr k) =
M.unsafeWrite v idx y >> M.unsafeWrite v (idx + 1) cb
>> M.unsafeWrite v (idx + 2) cr
>> M.unsafeWrite v (idx + 3) k
instance ColorSpaceConvertible PixelYCbCrK8 PixelRGB8 where
convertPixel (PixelYCbCrK8 y cb cr _k) = PixelRGB8 (clamp r) (clamp g) (clamp b)
where
tof :: Word8 -> Float
tof = fromIntegral
clamp :: Float -> Word8
clamp = floor . max 0 . min 255
yf = tof y
r = yf + 1.402 * tof cr - 179.456
g = yf - 0.3441363 * tof cb - 0.71413636 * tof cr + 135.4589
b = yf + 1.772 * tof cb - 226.816
instance ColorSpaceConvertible PixelYCbCrK8 PixelCMYK8 where
convertPixel (PixelYCbCrK8 y cb cr k) = PixelCMYK8 c m ye k
where
tof :: Word8 -> Float
tof = fromIntegral
clamp :: Float -> Word8
clamp = floor . max 0 . min 255
yf = tof y
r = yf + 1.402 * tof cr - 179.456
g = yf - 0.3441363 * tof cb - 0.71413636 * tof cr + 135.4589
b = yf + 1.772 * tof cb - 226.816
c = clamp $ 255 - r
m = clamp $ 255 - g
ye = clamp $ 255 - b
{-# SPECIALIZE integralRGBToCMYK :: (Word8 -> Word8 -> Word8 -> Word8 -> b)
-> (Word8, Word8, Word8) -> b #-}
{-# SPECIALIZE integralRGBToCMYK :: (Word16 -> Word16 -> Word16 -> Word16 -> b)
-> (Word16, Word16, Word16) -> b #-}
integralRGBToCMYK :: (Bounded a, Integral a)
=> (a -> a -> a -> a -> b)
-> (a, a, a)
-> b
integralRGBToCMYK build (r, g, b) =
build (clamp c) (clamp m) (clamp y) (fromIntegral kInt)
where maxi = maxBound
ir = fromIntegral $ maxi - r :: Int
ig = fromIntegral $ maxi - g
ib = fromIntegral $ maxi - b
kInt = minimum [ir, ig, ib]
ik = fromIntegral maxi - kInt
c = (ir - kInt) `div` ik
m = (ig - kInt) `div` ik
y = (ib - kInt) `div` ik
clamp = fromIntegral . max 0
instance ColorSpaceConvertible PixelRGB8 PixelCMYK8 where
convertPixel (PixelRGB8 r g b) = integralRGBToCMYK PixelCMYK8 (r, g, b)
instance ColorPlane PixelCMYK8 PlaneCyan where
toComponentIndex _ _ = 0
instance ColorPlane PixelCMYK8 PlaneMagenta where
toComponentIndex _ _ = 1
instance ColorPlane PixelCMYK8 PlaneYellow where
toComponentIndex _ _ = 2
instance ColorPlane PixelCMYK8 PlaneBlack where
toComponentIndex _ _ = 3
instance Pixel PixelCMYK16 where
type PixelBaseComponent PixelCMYK16 = Word16
{-# INLINE pixelOpacity #-}
pixelOpacity = const maxBound
{-# INLINE mixWith #-}
mixWith f (PixelCMYK16 ca ma ya ka) (PixelCMYK16 cb mb yb kb) =
PixelCMYK16 (f 0 ca cb) (f 1 ma mb) (f 2 ya yb) (f 3 ka kb)
{-# INLINE colorMap #-}
colorMap f (PixelCMYK16 c m y k) = PixelCMYK16 (f c) (f m) (f y) (f k)
{-# INLINE componentCount #-}
componentCount _ = 4
{-# INLINE pixelAt #-}
pixelAt image@(Image { imageData = arr }) x y = PixelCMYK16 (arr ! (baseIdx + 0))
(arr ! (baseIdx + 1))
(arr ! (baseIdx + 2))
(arr ! (baseIdx + 3))
where baseIdx = pixelBaseIndex image x y
{-# INLINE readPixel #-}
readPixel image@(MutableImage { mutableImageData = arr }) x y = do
rv <- arr `M.read` baseIdx
gv <- arr `M.read` (baseIdx + 1)
bv <- arr `M.read` (baseIdx + 2)
av <- arr `M.read` (baseIdx + 3)
return $ PixelCMYK16 rv gv bv av
where baseIdx = mutablePixelBaseIndex image x y
{-# INLINE writePixel #-}
writePixel image@(MutableImage { mutableImageData = arr }) x y (PixelCMYK16 rv gv bv av) = do
let baseIdx = mutablePixelBaseIndex image x y
(arr `M.write` (baseIdx + 0)) rv
(arr `M.write` (baseIdx + 1)) gv
(arr `M.write` (baseIdx + 2)) bv
(arr `M.write` (baseIdx + 3)) av
{-# INLINE unsafePixelAt #-}
unsafePixelAt v idx =
PixelCMYK16 (V.unsafeIndex v idx)
(V.unsafeIndex v $ idx + 1)
(V.unsafeIndex v $ idx + 2)
(V.unsafeIndex v $ idx + 3)
{-# INLINE unsafeReadPixel #-}
unsafeReadPixel vec idx =
PixelCMYK16 `liftM` M.unsafeRead vec idx
`ap` M.unsafeRead vec (idx + 1)
`ap` M.unsafeRead vec (idx + 2)
`ap` M.unsafeRead vec (idx + 3)
{-# INLINE unsafeWritePixel #-}
unsafeWritePixel v idx (PixelCMYK16 r g b a) =
M.unsafeWrite v idx r >> M.unsafeWrite v (idx + 1) g
>> M.unsafeWrite v (idx + 2) b
>> M.unsafeWrite v (idx + 3) a
instance ColorSpaceConvertible PixelCMYK16 PixelRGB16 where
convertPixel (PixelCMYK16 c m y k) =
PixelRGB16 (clampWord16 r) (clampWord16 g) (clampWord16 b)
where
clampWord16 = fromIntegral . (`unsafeShiftR` 16)
ik :: Int
ik = 65535 - fromIntegral k
r = (65535 - fromIntegral c) * ik
g = (65535 - fromIntegral m) * ik
b = (65535 - fromIntegral y) * ik
instance ColorPlane PixelCMYK16 PlaneCyan where
toComponentIndex _ _ = 0
instance ColorPlane PixelCMYK16 PlaneMagenta where
toComponentIndex _ _ = 1
instance ColorPlane PixelCMYK16 PlaneYellow where
toComponentIndex _ _ = 2
instance ColorPlane PixelCMYK16 PlaneBlack where
toComponentIndex _ _ = 3
gammaCorrection :: PixelF
-> Image PixelRGBF
-> Image PixelRGBF
gammaCorrection gammaVal = pixelMap gammaCorrector
where gammaExponent = 1.0 / gammaVal
fixVal v = v ** gammaExponent
gammaCorrector (PixelRGBF r g b) =
PixelRGBF (fixVal r) (fixVal g) (fixVal b)
toneMapping :: PixelF
-> Image PixelRGBF
-> Image PixelRGBF
toneMapping exposure img = Image (imageWidth img) (imageHeight img) scaledData
where coeff = exposure * (exposure / maxBrightness + 1.0) / (exposure + 1.0);
maxBrightness = pixelFold (\luma _ _ px -> max luma $ computeLuma px) 0 img
scaledData = V.map (* coeff) $ imageData img
class PackeablePixel a where
type PackedRepresentation a
packPixel :: a -> PackedRepresentation a
unpackPixel :: PackedRepresentation a -> a
instance PackeablePixel Pixel8 where
type PackedRepresentation Pixel8 = Pixel8
packPixel = id
{-# INLINE packPixel #-}
unpackPixel = id
{-# INLINE unpackPixel #-}
instance PackeablePixel Pixel16 where
type PackedRepresentation Pixel16 = Pixel16
packPixel = id
{-# INLINE packPixel #-}
unpackPixel = id
{-# INLINE unpackPixel #-}
instance PackeablePixel Pixel32 where
type PackedRepresentation Pixel32 = Pixel32
packPixel = id
{-# INLINE packPixel #-}
unpackPixel = id
{-# INLINE unpackPixel #-}
instance PackeablePixel PixelF where
type PackedRepresentation PixelF = PixelF
packPixel = id
{-# INLINE packPixel #-}
unpackPixel = id
{-# INLINE unpackPixel #-}
instance PackeablePixel PixelRGBA8 where
type PackedRepresentation PixelRGBA8 = Word32
{-# INLINE packPixel #-}
packPixel (PixelRGBA8 r g b a) =
(fi r `unsafeShiftL` (0 * bitCount)) .|.
(fi g `unsafeShiftL` (1 * bitCount)) .|.
(fi b `unsafeShiftL` (2 * bitCount)) .|.
(fi a `unsafeShiftL` (3 * bitCount))
where fi = fromIntegral
bitCount = 8
{-# INLINE unpackPixel #-}
unpackPixel w =
PixelRGBA8 (low w)
(low $ w `unsafeShiftR` bitCount)
(low $ w `unsafeShiftR` (2 * bitCount))
(low $ w `unsafeShiftR` (3 * bitCount))
where
low v = fromIntegral (v .&. 0xFF)
bitCount = 8
instance PackeablePixel PixelRGBA16 where
type PackedRepresentation PixelRGBA16 = Word64
{-# INLINE packPixel #-}
packPixel (PixelRGBA16 r g b a) =
(fi r `unsafeShiftL` (0 * bitCount)) .|.
(fi g `unsafeShiftL` (1 * bitCount)) .|.
(fi b `unsafeShiftL` (2 * bitCount)) .|.
(fi a `unsafeShiftL` (3 * bitCount))
where fi = fromIntegral
bitCount = 16
{-# INLINE unpackPixel #-}
unpackPixel w =
PixelRGBA16 (low w)
(low $ w `unsafeShiftR` bitCount)
(low $ w `unsafeShiftR` (2 * bitCount))
(low $ w `unsafeShiftR`