Jacek Blaszczynski

Drop support for .NET Framework - it's deprecated, old with heavy compatibility luggage, and holding new optimizations back

2

Microsft has announced new .NET 5 and at the same time effectively deprecated .NET Framework. This resulted in a significant feature gap between even current .NET Core 3.0 and .NET...

Implement support for composite foreground images created from Sjbz, Djbz, Fgbz chunks

1

Currently DjvuNet supports only one of two DjvuLibre foreground image encoding schemes: FG44 chunk based IW44 compressed images painted with a bitonal mask on background image. Second encoding scheme uses...

Implement Interpolated Dubuc-Deslauriers-Lemire (DDL) (4, 4) wavelet encoder

4

DjvuLibre image compression is based on IW44 codec which uses Interpolated Dubuc-Deslauriers-Lemire (DDL) (4, 4) wavelet based compression scheme with ZP Coder. DjvuNet has implementation of IW44 decoder but lacks...

Vectorize critical hot code paths with Intel and Arm hardware intrinsics

1

Availability of SIMD intrinsics from System.Numerics enables new class of optimisations for managed code - hand coded vectorization. It is possible to use them in several cases to speed up...

# Umbrella issue to follow format validation effort. ## Implement and validate: * [x] IFF / Djvu file format parser and writer * [x] ZP Coder encoder and decoder *...