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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,30 @@ | ||
| {-# LANGUAGE FlexibleContexts #-} | ||
| {-# LANGUAGE FlexibleInstances #-} | ||
| {-# LANGUAGE ScopedTypeVariables #-} | ||
| {-# LANGUAGE TypeApplications #-} | ||
| module Graphics.Color.Model.YCbCrSpec (spec) where | ||
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| import Graphics.Color.Model | ||
| import Graphics.Color.Model.Common | ||
| import Graphics.Color.Model.RGBSpec () | ||
| import qualified Codec.Picture.Types as JuicyPixels | ||
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| instance (Elevator e, Random e) => Arbitrary (Color YCbCr e) where | ||
| arbitrary = | ||
| ColorYCbCr <$> arbitraryElevator <*> arbitraryElevator <*> arbitraryElevator | ||
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| spec :: Spec | ||
| spec = | ||
| describe "YCbCr" $ do | ||
| colorModelSpec @YCbCr @Word "YCbCr" | ||
| -- prop "rgb2ycbcr . ycbcr2rgb" $ \(rgb :: Color RGB Double) -> | ||
| -- rgb `epsilonEqColor` ycbcr2rgb (rgb2ycbcr rgb) | ||
| -- describe "Match JuicyPixels" $ do | ||
| -- prop "rgb2ycbcr" $ \(rgb@(ColorRGB r g b) :: Color RGB Word8) -> | ||
| -- case JuicyPixels.convertPixel (JuicyPixels.PixelRGB8 r g b) of | ||
| -- JuicyPixels.PixelYCbCr8 y cb cr -> | ||
| -- toWord8 <$> rgb2ycbcr (toFloat <$> rgb) `approxIntegralColorExpect1` ColorYCbCr y cb cr | ||
| -- prop "ycbcr2rgb" $ \(ycbcr@(ColorYCbCr y cb cr) :: Color YCbCr Word8) -> | ||
| -- case JuicyPixels.convertPixel (JuicyPixels.PixelYCbCr8 y cb cr) of | ||
| -- JuicyPixels.PixelRGB8 r g b -> | ||
| -- toWord8 <$> ycbcr2rgb (toFloat <$> ycbcr) `approxIntegralColorExpect1` ColorRGB r g b |
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52
Color/tests/Graphics/Color/Space/RGB/Alternative/YCbCrSpec.hs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| {-# LANGUAGE FlexibleContexts #-} | ||
| {-# LANGUAGE FlexibleInstances #-} | ||
| {-# LANGUAGE ScopedTypeVariables #-} | ||
| {-# LANGUAGE TypeApplications #-} | ||
| module Graphics.Color.Space.RGB.Alternative.YCbCrSpec (spec) where | ||
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| import qualified Codec.Picture.Types as JuicyPixels | ||
| import Graphics.Color.Space.Common | ||
| import Graphics.Color.Space.RGB.SRGB | ||
| import qualified Graphics.Color.Space.RGB.Derived.SRGB as Derived | ||
| import Graphics.Color.Space.RGB.Alternative.YCbCr | ||
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| instance (Elevator e, Random e) => Arbitrary (Color SRGB e) where | ||
| arbitrary = | ||
| ColorRGB <$> arbitraryElevator <*> arbitraryElevator <*> arbitraryElevator | ||
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| instance (Illuminant i, Elevator e, Random e) => Arbitrary (Color (Derived.SRGB i) e) where | ||
| arbitrary = | ||
| ColorRGB <$> arbitraryElevator <*> arbitraryElevator <*> arbitraryElevator | ||
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| instance (Elevator e, Random e) => Arbitrary (Color (YCbCr cs) e) where | ||
| arbitrary = | ||
| ColorYCbCr <$> arbitraryElevator <*> arbitraryElevator <*> arbitraryElevator | ||
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| spec :: Spec | ||
| spec = | ||
| describe "YCbCr" $ do | ||
| describe "sRGB" $ do | ||
| colorModelSpec @(YCbCr SRGB) @Word "YCbCr" | ||
| colorSpaceCommonSpec @(YCbCr SRGB) @_ @Double $ pure () | ||
| describe "Derived-sRGB" $ do | ||
| colorModelSpec @(YCbCr (Derived.SRGB D65)) @Word "YCbCr" | ||
| colorSpaceCommonSpec @(YCbCr (Derived.SRGB D65)) @_ @Double $ pure () | ||
| prop "toColorYCbCr . toColorYCbCr" $ \(rgb :: Color (Derived.SRGB D65) Double) -> | ||
| rgb `epsilonEqColor` | ||
| fromColorYCbCr (toColorYCbCr rgb :: Color (YCbCr (Derived.SRGB D65)) Double) | ||
| prop "toColorYCbCr == srgb2ycbcr" $ \(rgb :: Color SRGB Double) -> | ||
| srgb2ycbcr rgb `epsilonEqColor` | ||
| (toColorYCbCr rgb :: Color (YCbCr SRGB) Double) | ||
| prop "fromColorYCbCr == ycbcr2srgb" $ \(ycbcr :: Color (YCbCr SRGB) Double) -> | ||
| ycbcr2srgb ycbcr `epsilonEqColor` (fromColorYCbCr ycbcr :: Color SRGB Double) | ||
| describe "Match JuicyPixels" $ do | ||
| prop "rgb2ycbcr" $ \(rgb@(ColorRGB r g b) :: Color SRGB Word8) -> | ||
| case JuicyPixels.convertPixel (JuicyPixels.PixelRGB8 r g b) of | ||
| JuicyPixels.PixelYCbCr8 y cb cr -> | ||
| (fromBaseSpace rgb :: Color (YCbCr SRGB) Word8) | ||
| `approxIntegralColorExpect1` ColorYCbCr y cb cr | ||
| prop "ycbcr2rgb" $ \(ycbcr@(ColorYCbCr y cb cr) :: Color (YCbCr SRGB) Word8) -> | ||
| case JuicyPixels.convertPixel (JuicyPixels.PixelYCbCr8 y cb cr) of | ||
| JuicyPixels.PixelRGB8 r g b -> | ||
| (toBaseSpace ycbcr) `approxIntegralColorExpect1` ColorRGB r g b |