29f1211622
a drop-in replacement for libjpeg.so. This commit splits them apart into two ports: graphics/libjpeg-turbo which installs only libturbojpeg.so graphics/jpeg-turbo which installs the libjpeg.so replacement This will allow ports to depend on libturbojpeg.so without causing pkg conflicts. Approved by: maintainer
21 lines
1.0 KiB
Plaintext
21 lines
1.0 KiB
Plaintext
This is a drop-in replacement for the graphics/jpeg library. It does not
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include libturbojpeg.so (see graphics/libjpeg-turbo).
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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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