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MDEC: EOB is optional for complete blocks

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This commit is contained in:
Albert Liu 2021-10-28 07:16:01 -07:00
parent 10cf8ef638
commit 1f07ea6ecc
1 changed files with 18 additions and 16 deletions
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34
src/core/mdec.cpp
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@ -595,26 +595,28 @@ bool MDEC::rl_decode_block(s16* blk, const u8* qt)
m_remaining_halfwords--;
m_current_coefficient += ((n >> 10) & 0x3F) + 1;
if (m_current_coefficient >= 64)
if (m_current_coefficient < 64)
{
s32 val = (SignExtendN<10, s32>(static_cast<s32>(n & 0x3FF)) *
static_cast<s32>(ZeroExtend32(qt[m_current_coefficient])) * static_cast<s32>(m_current_q_scale) +
4) /
8;
if (m_current_q_scale == 0)
val = SignExtendN<10, s32>(static_cast<s32>(n & 0x3FF)) * 2;
val = std::clamp(val, -0x400, 0x3FF);
if (m_current_q_scale > 0)
blk[zagzig[m_current_coefficient]] = static_cast<s16>(val);
else if (m_current_q_scale == 0)
blk[m_current_coefficient] = static_cast<s16>(val);
}
if (m_current_coefficient >= 63)
{
m_current_coefficient = 64;
return true;
}
s32 val = (SignExtendN<10, s32>(static_cast<s32>(n & 0x3FF)) *
static_cast<s32>(ZeroExtend32(qt[m_current_coefficient])) * static_cast<s32>(m_current_q_scale) +
4) /
8;
if (m_current_q_scale == 0)
val = SignExtendN<10, s32>(static_cast<s32>(n & 0x3FF)) * 2;
val = std::clamp(val, -0x400, 0x3FF);
// val = val * static_cast<s32>(ZeroExtend32(scalezag[i]));
if (m_current_q_scale > 0)
blk[zagzig[m_current_coefficient]] = static_cast<s16>(val);
else if (m_current_q_scale == 0)
blk[m_current_coefficient] = static_cast<s16>(val);
}
return false;