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Properly unpack levels from RLE data

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This commit is contained in:
Dan Paulat 2022-04-08 23:47:22 -05:00
parent 6fc1f89fb1
commit 5e20ff9311
1 changed files with 13 additions and 6 deletions
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19
wxdata/source/scwx/wsr88d/rpg/radial_data_packet.cpp
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@ -218,13 +218,20 @@ bool RadialDataPacket::Parse(std::istream& is)
radial.data_.pop_back();
}
radial.level_.resize(radial.data_.size());
// Unpack the levels from the Run Length Encoded data
radial.level_.resize(p->numberOfRangeBins_);
std::transform(std::execution::par_unseq,
radial.data_.cbegin(),
radial.data_.cend(),
radial.level_.begin(),
[](uint8_t data) -> uint8_t { return data & 0x0f; });
uint16_t b = 0;
for (auto it = radial.data_.cbegin(); it != radial.data_.cend(); it++)
{
uint8_t run = *it >> 4;
uint8_t level = *it & 0x0f;
for (int i = 0; i < run && b < p->numberOfRangeBins_; i++)
{
radial.level_[b++] = level;
}
}
}
}