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f3a8684c
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2016-01-07T00:19:43
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SSE2 SIMD implementation of Huffman encoding
Full-color compression speedups relative to libjpeg-turbo 1.4.2:
2.8 GHz Intel Xeon W3530, Linux, 64-bit: 2.2-18% (avg. 9.5%)
2.8 GHz Intel Xeon W3530, Linux, 32-bit: 10-25% (avg. 17%)
2.3 GHz AMD A10-4600M APU, Linux, 64-bit: 4.9-17% (avg. 11%)
2.3 GHz AMD A10-4600M APU, Linux, 32-bit: 8.8-19% (avg. 15%)
3.0 GHz Intel Core i7, OS X, 64-bit: 3.5-16% (avg. 10%)
3.0 GHz Intel Core i7, OS X, 32-bit: 4.8-14% (avg. 11%)
2.6 GHz AMD Athlon 64 X2 5050e:
Performance-neutral (give or take a few percent)
Full-color compression speedups relative to IPP:
2.8 GHz Intel Xeon W3530, Linux, 64-bit: 4.8-34% (avg. 19%)
2.8 GHz Intel Xeon W3530, Linux, 32-bit: -19%-7.0% (avg. -7.0%)
Refer to #42 for discussion. Numerous other approaches were attempted,
but this one proved to be the most performant across all platforms.
This commit also fixes #3 (works around, really-- the clang-compiled version
of jchuff.c still performs 20% worse than its GCC-compiled counterpart, but
that code is now bypassed by the new SSE2 Huffman algorithm.)
Based on:
https://github.com/mayeut/libjpeg-turbo/commit/2cb4d41330e1edc4469f6b97ba73b73abfbeb02f
https://github.com/mayeut/libjpeg-turbo/commit/36c94e050d117912adbff9fbcc6fe307df240168
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71e971fb
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2015-12-19T14:18:21
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Build: Use FILEPATH type for NASM CMake variable
This causes cmake-gui to to display the proper file chooser dialog
(as opposed to the directory chooser.)
Fixes #40
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2472bc71
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2014-06-22T21:14:39
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Add proper support for Borland compilers (Borland needs section names to be prefixed with an underscore, and it needs OMF object files.)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1328 632fc199-4ca6-4c93-a231-07263d6284db
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e47364ac
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2014-05-10T10:10:03
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Modify Windows build system to take into account new assembly file names
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1283 632fc199-4ca6-4c93-a231-07263d6284db
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29d8f253
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2012-08-07T21:59:59
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Fix build issues that occurred whenever the source directory contained the letters "col", "mer", or "gra".
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.2.x@860 632fc199-4ca6-4c93-a231-07263d6284db
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8015a303
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2012-03-17T14:32:38
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Visual Studio 2010 doesn't like the wildcard at compile time, so let CMake expand it instead.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.2.x@813 632fc199-4ca6-4c93-a231-07263d6284db
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105f9a94
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2011-11-29T09:02:10
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Expose NASM variable in ccmake
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.1.x@726 632fc199-4ca6-4c93-a231-07263d6284db
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0f905d35
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2011-11-29T09:01:23
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Expose NASM variable in ccmake
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@725 632fc199-4ca6-4c93-a231-07263d6284db
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dc6f6a9c
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2011-04-07T05:27:29
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Don't need MSVC definition in assembler code anymore
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@575 632fc199-4ca6-4c93-a231-07263d6284db
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577ae78c
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2011-04-07T05:26:52
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Don't need MSVC definition in assembler code anymore
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.1.x@574 632fc199-4ca6-4c93-a231-07263d6284db
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926e01ff
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2011-04-06T06:35:38
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Attempt to make build work with Visual Studio 2010 (still doesn't work if SIMD or Java are enabled-- see bug tracker)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.1.x@573 632fc199-4ca6-4c93-a231-07263d6284db
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b05ebcbc
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2011-04-04T21:00:53
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Attempt to make build work with Visual Studio 2010 (still doesn't work if SIMD or Java are enabled-- see bug tracker)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@570 632fc199-4ca6-4c93-a231-07263d6284db
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58b6ec45
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2011-04-02T02:14:13
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Ensure that *gra*.asm is rebuilt whenever *gry*.asm changes.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@558 632fc199-4ca6-4c93-a231-07263d6284db
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da5220ac
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2011-03-02T02:17:30
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Fix Windows build; Add grayscale tests to Windows build; Add proper implementation of snprintf on Windows and use snprintf() in TurboJPEG library and tests instead of sprintf()
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@486 632fc199-4ca6-4c93-a231-07263d6284db
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d830d360
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2010-10-15T20:07:41
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Fix dependencies for the color conversion routines, which build other .asm files indirectly
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@265 632fc199-4ca6-4c93-a231-07263d6284db
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c869c2c8
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2010-10-15T08:43:32
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Unix LF
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@263 632fc199-4ca6-4c93-a231-07263d6284db
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cd5f2ee2
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2010-10-15T08:39:44
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Allow nasm path to be overridden
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@262 632fc199-4ca6-4c93-a231-07263d6284db
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84697036
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2010-10-15T03:43:24
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First pass at a CMake build system
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@257 632fc199-4ca6-4c93-a231-07263d6284db
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