kc3-lang/libjpeg-turbo/release/ReadMe.txt

• Show log

  Commit

• Hash : 29f718ee
  Author :
  Date : 2019-12-31T00:06:11
  

  README.md, package specs: Various tweaks
  
  - Don't enumerate the types of SIMD instructions that libjpeg-turbo
    supports, as this can change without notice.
  - Use more clear terminology when describing support for libjpeg v7/v8
    features ("libjpeg" is, colloquially but not officially, the name for
    the IJG's software, whereas the "libjpeg API" refers to our emulation
    of said software.)
  - "PhotoShop" = "Photoshop" (StudLy Caps Police)
  - Adjust dynamic library versions to reflect the addition of
    jpeg_read_icc_profile() and jpeg_write_icc_profile() in
    libjpeg-turbo 2.0.x.
  

Download

• release/ReadMe.txt

• libjpeg-turbo is a JPEG image codec that uses SIMD instructions to accelerate baseline JPEG compression and decompression on x86, x86-64, ARM, PowerPC, and MIPS systems, as well as progressive JPEG compression on x86 and x86-64 systems.  On such systems, libjpeg-turbo is generally 2-6x as fast as libjpeg, all else being equal.  On other types of systems, libjpeg-turbo can still outperform libjpeg by a significant amount, by virtue of its highly-optimized Huffman coding routines.  In many cases, the performance of libjpeg-turbo rivals that of proprietary high-speed JPEG codecs.
  
  libjpeg-turbo implements both the traditional libjpeg API as well as the less powerful but more straightforward TurboJPEG API.  libjpeg-turbo also features colorspace extensions that allow it to compress from/decompress to 32-bit and big-endian pixel buffers (RGBX, XBGR, etc.), as well as a full-featured Java interface.
  
  libjpeg-turbo was originally based on libjpeg/SIMD, an MMX-accelerated derivative of libjpeg v6b developed by Miyasaka Masaru.  The TigerVNC and VirtualGL projects made numerous enhancements to the codec in 2009, and in early 2010, libjpeg-turbo spun off into an independent project, with the goal of making high-speed JPEG compression/decompression technology available to a broader range of users and developers.
  

Download