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Diffstat (limited to 'tags/1.2.1/release/ReadMe.rtf')
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diff --git a/tags/1.2.1/release/ReadMe.rtf b/tags/1.2.1/release/ReadMe.rtf new file mode 100644 index 0000000..06c94ab --- /dev/null +++ b/tags/1.2.1/release/ReadMe.rtf @@ -0,0 +1,13 @@ +{\rtf1\ansi\ansicpg1252\cocoartf1038\cocoasubrtf360 +{\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 that uses SIMD instructions (MMX, SSE2, NEON) to accelerate baseline JPEG compression and decompression on x86, x86-64, and ARM systems. On such systems, libjpeg-turbo is generally 2-4x as fast as the unmodified version of libjpeg, all else being equal.\ +\ +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 achieves 80-120% of the performance 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.\ +}
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