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JFIF (JPEG) Pic Datatype 44.11 /w 080 AMMX Support

Vojin Vidanovic

Posts 1697
28 Dec 2019 18:06


Short: JFIF (JPEG) picture datatype 44.11
  Author: gni at gecko.de (Gunther Nikl), Henryk Richter
  Uploader: henryk richter gmx net (Henryk Richter)
  Type: util/dtype
  Version: 44.11
  Architecture: m68k-amigaos >= 3.0.0
  Distribution: NoCD
  Date: 2019-12-27
  Download: EXTERNAL LINK -
  Readme: EXTERNAL LINK 
This release of JFIFdt incorporates improvements to the datatype
  dispatch code alongside with an updated JPEG library. Assembly level
  optimization has been done in order to improve runtime performance
  considerably. Due to the optimizations, this is the fastest JPEG
  datatype for 68k Amigas.
 
  The datatype is an all-in-one binary for any 68020+ Amiga.
  A 68000 version (without assembly optimizations) is provided as well.
 
  Changes in this release
    - with some JPEGs, color clipping was wrong (in one of the
      color conversion cases), fixed.
 
  Vamp related feats
 
    - AMMX optimization for Apollo Core Gold 2.7 and later
    - FPU and AMMX availability is checked before use at runtime
 
  Other m68k and AOS Feature overview
 
    - supports normal and progressive JFIFs with all its flavours
    - supports HAM output (HAM6 as well as HAM8)
    - switches to V43 mode if a picture.datatype V43 or newer is found
    - asynchronous file I/O to speedup image loading and decoding
    - utilizes WritePixelLine8() for chunky-to-planar in V42 mode
    - automatic colour quantizing of true-colour data for V42
    - can be configured to suit personal preferences
    - OS 3.5+ support (minimum OS3.0)
    - FBlit support
    - based on libjpeg-turbo
    - ASM optimizations to Huffman decoding, iDCT and color
      transform (68020+)
    - support for XMP JFIF files
    - all-in-one binary for 68020+


Mattias B

Posts 8
28 Dec 2019 18:48


Nice to see software starting to take advantage of the 080 features.


Justo Soria Guillin

Posts 5
28 Dec 2019 18:58


Nice great Job guys💪

posts 3