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Another bitstream fix

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This commit is contained in:
Jack Andersen
2017-02-06 16:25:58 -10:00
parent 4b21ded1e3
commit 356788fb9e
3 changed files with 10 additions and 10 deletions
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16
Runtime/IOStreams.cpp
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@@ -34,8 +34,8 @@ s32 CBitStreamReader::ReadEncoded(u32 bitCount)
if (shiftAmt < 0)
{
/* OR in remaining bits of cached value */
u32 mask = (1 << bitCount) - 1;
ret |= (x1c_val << -shiftAmt) & mask;
u32 mask = bitCount == 32 ? 0xffffffff : ((1 << bitCount) - 1);
ret |= (x1c_val << u32(-shiftAmt)) & mask;
/* Load in exact number of bytes remaining */
auto loadDiv = std::div(-shiftAmt, 8);
@@ -47,14 +47,14 @@ s32 CBitStreamReader::ReadEncoded(u32 bitCount)
x20_bitOffset = loadDiv.quot * 8 + shiftAmt;
/* OR in next bits */
mask = (1 << -shiftAmt) - 1;
mask = (1 << u32(-shiftAmt)) - 1;
ret |= (x1c_val >> x20_bitOffset) & mask;
}
else
{
/* OR in bits of cached value */
u32 mask = (1 << bitCount) - 1;
ret |= (x1c_val >> shiftAmt) & mask;
u32 mask = bitCount == 32 ? 0xffffffff : ((1 << bitCount) - 1);
ret |= (x1c_val >> u32(shiftAmt)) & mask;
/* New bit offset */
x20_bitOffset -= bitCount;
@@ -83,7 +83,7 @@ void CBitStreamWriter::WriteEncoded(u32 val, u32 bitCount)
{
/* OR remaining bits to cached value */
u32 mask = (1 << x18_bitOffset) - 1;
x14_val |= (val >> -shiftAmt) & mask;
x14_val |= (val >> u32(-shiftAmt)) & mask;
/* Write out 32-bits */
x14_val = hecl::SBig(x14_val);
@@ -96,8 +96,8 @@ void CBitStreamWriter::WriteEncoded(u32 val, u32 bitCount)
else
{
/* OR bits to cached value */
u32 mask = (1 << bitCount) - 1;
x14_val |= (val & mask) << shiftAmt;
u32 mask = bitCount == 32 ? 0xffffffff : ((1 << bitCount) - 1);
x14_val |= (val & mask) << u32(shiftAmt);
/* New bit offset */
x18_bitOffset -= bitCount;