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* Replaced most CSJ2K Array.Copy() calls with the faster Buffer.BlockCopy() for a ~17% speedup (LIBOMV-861)

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git-svn-id: http://libopenmetaverse.googlecode.com/svn/libopenmetaverse/trunk@3411 52acb1d6-8a22-11de-b505-999d5b087335
This commit is contained in:
John Hurliman
2010-08-05 19:18:24 +00:00
parent 77e55fa488
commit 03901afe1e
19 changed files with 47 additions and 47 deletions
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8
CSJ2K/j2k/image/invcomptransf/InvCompTransf.cs
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@@ -292,14 +292,14 @@ namespace CSJ2K.j2k.image.invcomptransf
switch (ttype)
{
case NONE:
Array.Copy(utdepth, 0, tdepth, 0, utdepth.Length);
case NONE:
Buffer.BlockCopy(utdepth, 0, tdepth, 0, utdepth.Length);
break;
case INV_RCT:
if (utdepth.Length > 3)
{
Array.Copy(utdepth, 3, tdepth, 3, utdepth.Length - 3);
Buffer.BlockCopy(utdepth, 3, tdepth, 3, utdepth.Length - 3);
}
// The formulas are:
// tdepth[0] = ceil(log2(2^(utdepth[0])+2^utdepth[1]+
@@ -317,7 +317,7 @@ namespace CSJ2K.j2k.image.invcomptransf
case INV_ICT:
if (utdepth.Length > 3)
{
Array.Copy(utdepth, 3, tdepth, 3, utdepth.Length - 3);
Buffer.BlockCopy(utdepth, 3, tdepth, 3, utdepth.Length - 3);
}
// The MathUtil.log2(x) function calculates floor(log2(x)), so we
// use 'MathUtil.log2(2*x-1)+1', which calculates ceil(log2(x))