| {\rtf1\ansi\ansicpg1252\cocoartf1038\cocoasubrtf350 |
| {\fonttbl\f0\fswiss\fcharset0 Helvetica;} |
| {\colortbl;\red255\green255\blue255;} |
| \margl1440\margr1440\vieww15200\viewh9600\viewkind0 |
| \deftab720 |
| \pard\pardeftab720\ql\qnatural |
| |
| \f0\fs24 \cf0 libjpeg-turbo is a derivative of libjpeg which uses SIMD instructions (MMX, SSE2, etc.) to accelerate baseline JPEG compression and decompression on x86 and x86-64 systems. On such systems, libjpeg-turbo is generally 2-4x as fast as the unmodified version of libjpeg, all else being equal. libjpeg-turbo also includes a wrapper library which implements the TurboJPEG API used by VirtualGL and TurboVNC.\ |
| \ |
| libjpeg-turbo was originally based on libjpeg/SIMD by Miyasaka Masaru, but the TigerVNC and VirtualGL projects made numerous enhancements to the codec in 2009, including improved support for Mac OS X, 64-bit support, support for 32-bit and big endian pixel formats (RGBX, XBGR, etc.), accelerated Huffman encoding/decoding, and various bug fixes. The goal was to produce a fully open source codec that could replace the partially closed source TurboJPEG/IPP codec used by VirtualGL and TurboVNC. libjpeg-turbo generally performs in the range of 80-120% of TurboJPEG/IPP. It is faster in some areas but slower in others.\ |
| \ |
| In early 2010, libjpeg-turbo spun off into its own independent project, with the goal of making high-speed JPEG compression/decompression technology available to a broader range of users and developers.\ |
| } |
