Codec.Picture.Jpg.Internal.Progressive

Documentation

data JpgUnpackerParameter

Constructors

JpgUnpackerParameter

Fields

• dcHuffmanTree :: !HuffmanPackedTree
• acHuffmanTree :: !HuffmanPackedTree
• componentIndex :: !Int
• restartInterval :: !Int
• componentWidth :: !Int
• componentHeight :: !Int
• subSampling :: !(Int, Int)
• coefficientRange :: !(Int, Int)
• successiveApprox :: !(Int, Int)
• readerIndex :: !Int
• indiceVector :: !Int

  When in progressive mode, we can have many color in a scan or only one. The indices changes on this fact, when mixed, there is whole MCU for all color components, spanning multiple block lines. With only one color component we use the normal raster order.

• blockIndex :: !Int
• blockMcuX :: !Int
• blockMcuY :: !Int

Instances

Show JpgUnpackerParameter

Defined in Codec.Picture.Jpg.Internal.Common

Methods

showsPrec :: Int -> JpgUnpackerParameter -> ShowS

show :: JpgUnpackerParameter -> String

showList :: [JpgUnpackerParameter] -> ShowS

progressiveUnpack :: (Int, Int) -> JpgFrameHeader -> Vector (MacroBlock Int16) -> [([(JpgUnpackerParameter, a)], ByteString)] -> ST s (MutableImage s PixelYCbCr8)