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some more cleanup and performance squeezing

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This commit is contained in:
Arndt 2016-08-26 08:40:52 +02:00
parent 12d8cae46f
commit 686d693103
9 changed files with 145 additions and 78 deletions
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46
brouter-util/src/main/java/btools/util/ByteDataReader.java
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@ -107,18 +107,44 @@ public class ByteDataReader
return ( v & 1 ) == 0 ? v >> 1 : -(v >> 1 );
}
public final int readVarLengthUnsigned_old()
{
int v = 0;
int shift = 0;
for ( ;; )
{
byte b = ab[aboffset++];
v |= ( ( b & 0x7f ) << shift );
if ( ( b & 0x80 ) == 0 )
{
break;
}
shift += 7;
}
return v;
}
public final int readVarLengthUnsigned()
{
int v = 0;
int shift = 0;
for(;;)
{
int i7 = ab[aboffset++] & 0xff;
v |= (( i7 & 0x7f ) << shift);
if ( ( i7 & 0x80 ) == 0 ) break;
shift += 7;
}
return v;
byte b;
int v = (b=ab[aboffset++]) & 0x7f;
if ( b >= 0 ) return v;
v |= ( (b=ab[aboffset++]) & 0x7f ) << 7;
if ( b >= 0 ) return v;
v |= ( (b=ab[aboffset++]) & 0x7f ) << 14;
if ( b >= 0 ) return v;
v |= ( (b=ab[aboffset++]) & 0x7f ) << 21;
if ( b >= 0 ) return v;
v |= ( (b=ab[aboffset++]) & 0x7f ) << 28;
if ( b >= 0 ) return v;
v |= ( (b=ab[aboffset++]) & 0x7f ) << 35;
if ( b >= 0 ) return v;
v |= ( (b=ab[aboffset++]) & 0x7f ) << 42;
if ( b >= 0 ) return v;
v |= ( (b=ab[aboffset++]) & 0x7f ) << 49;
if ( b >= 0 ) return v;
v |= ( (b=ab[aboffset++]) & 0x7f ) << 56;
return v;
}
public final void readFully( byte[] ta )