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feat(raw): add black level and BPS metadata #4601

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Merged
lgritz merged 1 commit into from
Jan 21, 2025
Merged

feat(raw): add black level and BPS metadata #4601

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19 changes: 19 additions & 0 deletions src/raw.imageio/rawinput.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -678,6 +678,23 @@ RawInput::open_raw(bool unpack, const std::string& name,
m_spec.channelnames.clear();
m_spec.channelnames.emplace_back("Y");

uint32_t raw_bps = m_processor->imgdata.rawdata.color.raw_bps;

float black_level = m_processor->imgdata.rawdata.color.black;
if (black_level == 0) {
unsigned* cblack = m_processor->imgdata.rawdata.color.cblack;
size_t size = cblack[4] * cblack[5];
size_t offset = 6;
if (size == 0) {
size = 4;
offset = 0;
}

for (size_t i = 0; i < size; i++)
black_level += cblack[offset + i];
black_level /= size;
}

// Put the details about the filter pattern into the metadata
std::string filter;
const bool is_xtrans
Expand All @@ -697,6 +714,8 @@ RawInput::open_raw(bool unpack, const std::string& name,
filter = "unknown";
}
m_spec.attribute("raw:FilterPattern", filter);
m_spec.attribute("raw:BlackLevel", black_level);
m_spec.attribute("raw:BitsPerSample", raw_bps);

// Also, any previously set demosaicing options are void, so remove them
m_spec.erase_attribute("oiio:ColorSpace");
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