"integer forward DCT", not "forward integer DCT"

git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.1.x@382 632fc199-4ca6-4c93-a231-07263d6284db
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DRC
2011-02-18 03:21:06 +00:00
parent 7c1df0a430
commit f0a5ba7542

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@@ -59,14 +59,14 @@ consumer packages, such as PhotoShop, use restart markers when generating JPEG
images, so images generated by those programs will experience this issue.
===============================================
Fast Forward Integer DCT at High Quality Levels
Fast Integer Forward DCT at High Quality Levels
===============================================
The algorithm used by the SIMD-accelerated quantization function cannot produce
correct results whenever the fast forward integer DCT is used along with a JPEG
correct results whenever the fast integer forward DCT is used along with a JPEG
quality of 98-100. Thus, libjpeg-turbo must use the non-SIMD quantization
function in those cases. This causes performance to drop by as much as 40%.
It is therefore strongly advised that you use the slow forward integer DCT
It is therefore strongly advised that you use the slow integer forward DCT
whenever encoding images with a JPEG quality of 98 or higher.