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https://gitea.windcorp.ru/Wind-Corporation/Progressia.git
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70 lines
1.8 KiB
C++
70 lines
1.8 KiB
C++
#include "image.h"
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#include <cstring>
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#include <filesystem>
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#include <fstream>
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#include <iostream>
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#include <limits>
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#include <vector>
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#include "stb/stb_image.h"
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#include <embedded_resources.h>
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#include "../logging.h"
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using namespace progressia::main::logging;
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namespace progressia::main {
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std::size_t Image::getSize() const { return data.size(); }
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const Image::Byte *Image::getData() const { return data.data(); }
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Image::Byte *Image::getData() { return data.data(); }
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Image loadImage(const std::string &path) {
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auto resource = __embedded_resources::getEmbeddedResource(path);
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if (resource.data == nullptr) {
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// REPORT_ERROR
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progressia::main::logging::fatal()
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<< "Could not find resource \"" << path << "\"";
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exit(1);
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}
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std::vector<Image::Byte> png(resource.data,
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resource.data + resource.length);
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if (png.size() > std::numeric_limits<int>::max()) {
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// REPORT_ERROR
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progressia::main::logging::fatal()
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<< "Could not load \"" << path << "\": image file too large";
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exit(1);
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}
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int dataSize = static_cast<int>(png.size());
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int width = 0;
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int height = 0;
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int channelsInFile = 0;
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Image::Byte *stbAllocatedData = stbi_load_from_memory(
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png.data(), dataSize, &width, &height, &channelsInFile, STBI_rgb_alpha);
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if (stbAllocatedData == nullptr) {
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fatal() << "Could not decode a PNG image from file " << path;
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// REPORT_ERROR
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exit(1);
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}
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std::vector<Image::Byte> data(width * height * STBI_rgb_alpha);
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memcpy(data.data(), stbAllocatedData, data.size());
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stbi_image_free(stbAllocatedData);
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return {static_cast<std::size_t>(width), static_cast<std::size_t>(height),
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data};
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}
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} // namespace progressia::main
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