void DecodeRLE(const uint8_t* data, std::size_t size, Dump& result)
{
Dump tmp;
tmp.reserve(MAX_SECTOR_SIZE);
ByteStream stream(data, size);
while (!stream.Eof())
{
const uint_t len = 2 * stream.GetByte();
Require(!stream.Eof());
const uint_t count = stream.GetByte();
Require(count != 0);
const bool isRLE = len != 0;
const uint_t blockSize = isRLE ? len : count;
Require(stream.GetRestBytes() >= blockSize);
for (uint_t idx = 0; idx != blockSize; ++idx)
{
tmp.push_back(stream.GetByte());
}
if (isRLE)
{
Require(CopyFromBack(len, tmp, len * (count - 1)));
}
}
result.swap(tmp);
}
void ApplyInsertions(Dump& result) const
{
if (0 == SizeAddon)
{
return;
}
Dump tmp(result.size() + SizeAddon);
Dump::const_iterator src = result.begin();
const Dump::const_iterator srcEnd = result.end();
auto dst = tmp.begin();
std::size_t oldOffset = 0;
for (const auto& ins : Insertions)
{
if (const std::size_t toCopy = ins.first - oldOffset)
{
const Dump::const_iterator nextEnd = src + toCopy;
dst = std::copy(src, nextEnd, dst);
src = nextEnd;
oldOffset += toCopy;
}
dst = std::copy(ins.second.begin(), ins.second.end(), dst);
}
std::copy(src, srcEnd, dst);
result.swap(tmp);
}
void DecodeR2P(const uint8_t* data, std::size_t size, Dump& result)
{
Require(size % sizeof(R2PEntry) == 0);
Dump tmp;
tmp.reserve(MAX_SECTOR_SIZE);
for (const R2PEntry* it = safe_ptr_cast<const R2PEntry*>(data), *lim = it + size / sizeof(*it); it != lim; ++it)
{
const uint_t count = fromLE(it->Count);
Require(count != 0);
tmp.push_back(it->Data[0]);
tmp.push_back(it->Data[1]);
Require(CopyFromBack(sizeof(it->Data), tmp, sizeof(it->Data) * (count - 1)));
}
result.swap(tmp);
}
