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seektable support, optimizations

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This commit is contained in:
chudov
2009-08-20 04:09:53 +00:00
parent 4ca116c1c5
commit f61382e43b
5 changed files with 681 additions and 330 deletions
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29
CUETools.Codecs.FLAKE/BitWriter.cs
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@@ -38,6 +38,17 @@ namespace CUETools.Codecs.FLAKE
writebits(bits, (uint)val);
}
public void writebits64(int bits, ulong val)
{
if (bits > 32)
{
writebits(bits - 32, (uint)(val >> 32));
val &= 0xffffffffL;
bits = 32;
}
writebits(bits, (uint)val);
}
public void writebits(int bits, uint val)
{
//assert(bits == 32 || val < (1U << bits));
@@ -100,12 +111,26 @@ namespace CUETools.Codecs.FLAKE
}
}
public void write_unary_signed(int val)
{
// convert signed to unsigned
int v = -2 * val - 1;
v ^= (v >> 31);
// write quotient in unary
int q = v + 1;
while (q > 31)
{
writebits(31, 0);
q -= 31;
}
writebits(q, 1);
}
public void write_rice_signed(int k, int val)
{
int v, q;
if (k < 0) return;
// convert signed to unsigned
v = -2 * val - 1;
v ^= (v >> 31);