47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
#include <algorithm>
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#include "PaletteDecoder.hh"
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#include "exceptions.hh"
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#include "ResourceProvider.hh"
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PaletteDecoder::PaletteDecoder(std::string const& path)
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: PaletteDecoder(ResourceProvider::getInstance().getIff(path))
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{
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}
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PaletteDecoder::PaletteDecoder(IffFile::Handle iff)
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: iff_(std::move(iff))
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{
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auto& root = iff_->getRoot();
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if (!root.isForm())
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throw FormatException{"Root node not FORM"};
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auto& rootForm = dynamic_cast<IffFile::Form const&>(root);
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if (rootForm.getSubtype() != "PALT")
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throw FormatException{"Root form not PALT"};
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for (auto paltIt = rootForm.childrenBegin();paltIt != rootForm.childrenEnd();++paltIt) {
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if (paltIt->getType() == "INFO") {
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} else if (paltIt->getType() == "PALT") {
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std::transform(paltIt->begin()+4, paltIt->begin()+772,
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palette_.begin(),
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[](const char& in) -> uint8_t {return (in << 2) | ((in >> 6)&0x3);});
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uint8_t min = 0xff, max = 0;
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for (auto it = paltIt->begin()+4;it != paltIt->end();++it) {
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if (*it == 0xff)
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continue;
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min = std::min(min, *it);
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max = std::max(max, *it);
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}
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printf("palt value range %hhu..%hhu\n", min, max);
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} else if (paltIt->getType() == "BLWH") {
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auto dstIt = palette_.begin();
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for (auto it = paltIt->begin()+4;it != paltIt->end();++it) {
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*dstIt = *dstIt * ((*it << 2) | ((*it >> 6)&0x3)) / 255u;
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++dstIt;
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}
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}
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}
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}
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