| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | #include <cstddef> | ||
| 2 | #include <expected> | ||
| 3 | #include <spanstream> | ||
| 4 | #include <format> | ||
| 5 | |||
| 6 | #include <nvtt/nvtt.h> | ||
| 7 | #define STB_IMAGE_WRITE_IMPLEMENTATION | ||
| 8 | #include <stb/stb_image_write.h> | ||
| 9 | |||
| 10 | #include <blp/blp.hpp> | ||
| 11 | #include "assets_mpq_importer/blp.hpp" | ||
| 12 | |||
| 13 | |||
| 14 | namespace assmpq::blp { | ||
| 15 | |||
| 16 | // NOLINTNEXTLINE | ||
| 17 | 3 | static void write_to_vector(void* context, void* data, int size) { | |
| 18 | 3 | auto* buffer = static_cast<std::vector<unsigned char>*>(context); | |
| 19 | 3 | auto* bytes = static_cast<unsigned char*>(data); | |
| 20 | 3 | auto bytes_size = static_cast<size_t>(size); | |
| 21 | |||
| 22 | 3 | const std::span<unsigned char> data_span(bytes, bytes_size); | |
| 23 |
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3 | buffer->insert(buffer->end(), data_span.begin(), data_span.end()); |
| 24 | 3 | } | |
| 25 | |||
| 26 | 2 | static auto fill_rgba_pixel_buffer(const wc3lib::blp::Blp::MipMap& mipmap)-> std::vector<uint32_t> | |
| 27 | { | ||
| 28 | 2 | const uint32_t width = mipmap.width(); | |
| 29 | 2 | const uint32_t height = mipmap.height(); | |
| 30 | |||
| 31 |
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6 | std::vector<uint32_t> pixel_buffer(static_cast<size_t>(width) * height); |
| 32 |
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11 | for (uint32_t iy = 0; iy < height; ++iy) { |
| 33 |
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74 | for (uint32_t ix = 0; ix < width; ++ix) { |
| 34 |
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65 | const auto& color = mipmap.colorAt(ix, iy); |
| 35 |
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65 | const uint32_t rgba = color.rgba(); |
| 36 | 65 | pixel_buffer[(iy * width) + ix] = std::byteswap(rgba); | |
| 37 | } | ||
| 38 | } | ||
| 39 | |||
| 40 | 2 | return pixel_buffer; | |
| 41 | ✗ | } | |
| 42 | |||
| 43 | 1 | static auto fill_palette_pixel_buffer( | |
| 44 | const wc3lib::blp::Blp::MipMap& mipmap, | ||
| 45 | const wc3lib::blp::Blp::ColorPtr& palette)-> std::vector<uint32_t> | ||
| 46 | { | ||
| 47 | 1 | const uint32_t width = mipmap.width(); | |
| 48 | 1 | const uint32_t height = mipmap.height(); | |
| 49 | |||
| 50 |
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3 | std::vector<uint32_t> pixel_buffer(static_cast<size_t>(width) * height); |
| 51 |
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33 | for (uint32_t iy = 0; iy < height; ++iy) { |
| 52 |
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1056 | for (uint32_t ix = 0; ix < width; ++ix) { |
| 53 |
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1024 | const auto& color = mipmap.colorAt(ix, iy); |
| 54 |
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1024 | const uint32_t rgba = color.paletteColor(palette.get()); |
| 55 | 1024 | pixel_buffer[(iy * width) + ix] = std::byteswap(rgba); | |
| 56 | } | ||
| 57 | } | ||
| 58 | |||
| 59 | 1 | return pixel_buffer; | |
| 60 | ✗ | } | |
| 61 | |||
| 62 | 5 | auto convert_blp_to_png_image(const FileData& blp_file, size_t mipmap_idx)-> std::expected<FileData, ErrorMessage> | |
| 63 | try { | ||
| 64 |
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5 | wc3lib::blp::Blp texture; |
| 65 | |||
| 66 |
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5 | std::ispanstream input(blp_file); |
| 67 |
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5 | texture.read(input); |
| 68 | |||
| 69 |
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4 | if (mipmap_idx >= texture.mipMaps().size()) { |
| 70 |
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1 | return std::unexpected(std::format("Mipmap index {} is out of range.", mipmap_idx)); |
| 71 | } | ||
| 72 | |||
| 73 |
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3 | const auto& mipmap = texture.mipMaps()[mipmap_idx]; |
| 74 | 3 | const uint32_t width = mipmap.width(); | |
| 75 | 3 | const uint32_t height = mipmap.height(); | |
| 76 | |||
| 77 | 3 | std::vector<uint32_t> pixel_buffer; | |
| 78 |
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3 | if (texture.compression() == wc3lib::blp::Blp::Compression::Paletted) { |
| 79 |
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1 | const auto& palette = texture.palette(); |
| 80 |
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1 | pixel_buffer = fill_palette_pixel_buffer(mipmap, palette); |
| 81 | } else { | ||
| 82 |
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2 | pixel_buffer = fill_rgba_pixel_buffer(mipmap); |
| 83 | } | ||
| 84 | |||
| 85 | 3 | std::vector<char> output_buffer; | |
| 86 | |||
| 87 | // Use stb_image_write to write the PNG to the memory buffer via the callback | ||
| 88 | // The stride_bytes parameter is the pitch, which can be width * channels for tightly packed data | ||
| 89 |
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3 | stbi_write_png_to_func( |
| 90 | write_to_vector, | ||
| 91 | &output_buffer, | ||
| 92 | static_cast<int>(width), | ||
| 93 | static_cast<int>(height), | ||
| 94 | kRgbaChannels, | ||
| 95 | 3 | pixel_buffer.data(), | |
| 96 | 3 | static_cast<int>(width) * kRgbaChannels); | |
| 97 | |||
| 98 | 3 | return output_buffer; | |
| 99 |
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7 | } catch (std::exception &e) { |
| 100 |
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1 | return std::unexpected(e.what()); |
| 101 | 1 | } | |
| 102 | |||
| 103 | |||
| 104 | } // namespace assmpq::blp | ||
| 105 | |||
| 106 | |||
| 107 | |||
| 108 |