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which uses SIMD instructions (MMX, SSE2, etc.) to accelerate baseline JPEG compression and decompression. 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, including improved support for Mac OS X, 64-bit support, support for 32-bit and big endian pixel formats (RGBA, ABGR, 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. WWW: http://libjpeg-turbo.virtualgl.org/ - D. R. Commander information@virtualgl.org PR: ports/145670 Submitted by: Denis E Podolskiy [bytestore yandex.ru] Approved by: tabthorpe (mentor)
21 lines
988 B
Plaintext
21 lines
988 B
Plaintext
libjpeg-turbo is a high-speed version of libjpeg for x86 and x86-64 processors
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which uses SIMD instructions (MMX, SSE2, etc.) to accelerate baseline JPEG
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compression and decompression.
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libjpeg-turbo is generally 2-4x as fast as the unmodified version
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of libjpeg, all else being equal.
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libjpeg-turbo was originally based on libjpeg/SIMD by Miyasaka Masaru,
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but the TigerVNC and VirtualGL projects made numerous enhancements to the codec,
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including improved support for Mac OS X, 64-bit support,
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support for 32-bit and big endian pixel formats (RGBA, ABGR, etc.),
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accelerated Huffman encoding/decoding, and various bug fixes.
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The goal was to produce a fully open source codec that could replace
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the partially closed source TurboJPEG/IPP codec used by VirtualGL and TurboVNC.
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libjpeg-turbo generally achieves 80-120% of the performance of TurboJPEG/IPP.
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It is faster in some areas but slower in others.
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WWW: http://libjpeg-turbo.virtualgl.org/
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- D. R. Commander
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information@virtualgl.org
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