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Transpile Java speedup (#548)

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This commit is contained in:
Eugene Kliuchnikov 2017-05-07 17:40:12 +02:00 committed by GitHub
parent 4363f2d74b
commit 0a84e9bf86
1 changed files with 26 additions and 11 deletions
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17
csharp/org/brotli/dec/Decode.cs
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@ -852,10 +852,24 @@ namespace Org.Brotli.Dec
case Org.Brotli.Dec.RunningState.CopyLoop: case Org.Brotli.Dec.RunningState.CopyLoop:
{ {
// fall through // fall through
int src = (state.pos - state.distance) & ringBufferMask;
int dst = state.pos;
int copyLength = state.copyLength - state.j;
if ((src + copyLength < ringBufferMask) && (dst + copyLength < ringBufferMask))
{
for (int k = 0; k < copyLength; ++k)
{
ringBuffer[dst++] = ringBuffer[src++];
}
state.j += copyLength;
state.metaBlockLength -= copyLength;
state.pos += copyLength;
}
else
{
for (; state.j < state.copyLength; ) for (; state.j < state.copyLength; )
{ {
ringBuffer[state.pos] = ringBuffer[(state.pos - state.distance) & ringBufferMask]; ringBuffer[state.pos] = ringBuffer[(state.pos - state.distance) & ringBufferMask];
// TODO: condense
state.metaBlockLength--; state.metaBlockLength--;
state.j++; state.j++;
if (state.pos++ == ringBufferMask) if (state.pos++ == ringBufferMask)
@ -867,6 +881,7 @@ namespace Org.Brotli.Dec
break; break;
} }
} }
}
if (state.runningState == Org.Brotli.Dec.RunningState.CopyLoop) if (state.runningState == Org.Brotli.Dec.RunningState.CopyLoop)
{ {
state.runningState = Org.Brotli.Dec.RunningState.MainLoop; state.runningState = Org.Brotli.Dec.RunningState.MainLoop;