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d729f4da
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2014-08-23T15:47:51
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ARM NEON SIMD support for YCC-to-RGB565 conversion, and optimizations to the existing YCC-to-RGB conversion code:
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https://github.com/ssvb/libjpeg-turbo/commit/aee36252be20054afce371a92406fc66ba6627b5.patch
From aee36252be20054afce371a92406fc66ba6627b5 Mon Sep 17 00:00:00 2001
From: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Date: Wed, 13 Aug 2014 03:50:22 +0300
Subject: [PATCH] ARM: Faster NEON yuv->rgb conversion for Krait and Cortex-A15
The older code was developed and tested only on ARM Cortex-A8 and ARM Cortex-A9.
Tuning it for newer ARM processors can introduce some speed-up (up to 20%).
The performance of the inner loop (conversion of 8 pixels) improves from
~27 cycles down to ~22 cycles on Qualcomm Krait 300, and from ~20 cycles
down to ~18 cycles on ARM Cortex-A15.
The performance remains exactly the same on ARM Cortex-A7 (~58 cycles),
ARM Cortex-A8 (~25 cycles) and ARM Cortex-A9 (~30 cycles) processors.
Also use larger indentation in the source code for separating two independent
instruction streams.
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https://github.com/ssvb/libjpeg-turbo/commit/a5efdbf22ce9c1acd4b14a353cec863c2c57557e.patch
From a5efdbf22ce9c1acd4b14a353cec863c2c57557e Mon Sep 17 00:00:00 2001
From: Siarhei Siamashka <siarhei.siamashka@gmail.com>
Date: Wed, 13 Aug 2014 07:23:09 +0300
Subject: [PATCH] ARM: NEON optimized yuv->rgb565 conversion
The performance of the inner loop (conversion of 8 pixels):
* ARM Cortex-A7: ~55 cycles
* ARM Cortex-A8: ~28 cycles
* ARM Cortex-A9: ~32 cycles
* ARM Cortex-A15: ~20 cycles
* Qualcomm Krait: ~24 cycles
Based on the Linaro rgb565 patch from
https://sourceforge.net/p/libjpeg-turbo/patches/24/
but implements better instructions scheduling.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1385 632fc199-4ca6-4c93-a231-07263d6284db
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64086281
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2014-05-15T19:46:48
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Clean up code formatting in the SIMD interface functions
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1306 632fc199-4ca6-4c93-a231-07263d6284db
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1419852c
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2014-05-15T19:45:11
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Clean up code formatting in the SIMD interface functions
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1305 632fc199-4ca6-4c93-a231-07263d6284db
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b7753510
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2014-05-11T09:36:25
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Convert tabs to spaces in the libjpeg code and the SIMD code (TurboJPEG retains the use of tabs for historical reasons. They were annoying in the libjpeg code primarily because they were not consistently used and because they were used to format as well as indent the code. In the case of TurboJPEG, tabs are used just to indent the code, so even if the editor assumes a different tab width, the code will still be readable.)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1285 632fc199-4ca6-4c93-a231-07263d6284db
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1a45b81f
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2014-05-09T18:06:58
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Remove trailing spaces (+ one additional tab in TJUnitTest.java that was missed in the previous commit)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1279 632fc199-4ca6-4c93-a231-07263d6284db
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67ce3b23
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2011-12-19T02:21:03
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Added new alpha channel colorspace constants/pixel formats, so applications can specify that they need the unused byte in a 4-component RGB output buffer set to 0xFF when decompressing.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@732 632fc199-4ca6-4c93-a231-07263d6284db
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392e0483
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2011-02-18T20:43:04
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Updated (C)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@394 632fc199-4ca6-4c93-a231-07263d6284db
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c8666333
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2011-02-18T11:23:45
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SIMD-accelerated RGB-to-Grayscale color conversion
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@393 632fc199-4ca6-4c93-a231-07263d6284db
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af1ca9bc
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2011-02-02T05:42:37
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Clarify that the C wrappers and headers fall under the same license as the rest of the SIMD code
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.0.x@335 632fc199-4ca6-4c93-a231-07263d6284db
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c06073a9
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2010-09-06T17:37:12
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Remove simd/ prefix from #include (not necessary and was causing problems with Visual Studio project)
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@228 632fc199-4ca6-4c93-a231-07263d6284db
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30959719
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2010-08-07T16:06:56
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Fix typo in SIMD dispatch routines which was causing 4:2:0 upsampling to
be used instead of 4:2:2 when decompressing JPEG images using SSE2 code
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@223 632fc199-4ca6-4c93-a231-07263d6284db
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04899094
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2010-02-26T23:01:19
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Bleepin' Windows uses LLP64, not LP64
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@158 632fc199-4ca6-4c93-a231-07263d6284db
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321ad513
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2009-10-08T09:41:39
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Enable 64-bit build on Snow Leopard
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@68 632fc199-4ca6-4c93-a231-07263d6284db
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ba82ddf6
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2009-06-29T11:20:42
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Clean up SIMD glue code
The SIMD glue code has gotten a bit #ifdef heavy so clean it up by having
one file for each possible SIMD arch. This also allows a simplification of
the x86_64 code as SSE/SSE2 is always known to exist on that arch.
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@49 632fc199-4ca6-4c93-a231-07263d6284db
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