netatmo-algo/src/png.cpp

#include "png.h"

#include <cstring>
#include <iostream>

#include "stb_image.h"

namespace freling {

std::optional<Frame> load_png(const std::filesystem::path& in) {
    int x = 0;
    int y = 0;
    int channels = 0;
    const int desired_channels = 3;
    unsigned char* data =
        stbi_load(in.c_str(), &x, &y, &channels, desired_channels);

    if (data == NULL) {
        return {};
    }

    Frame f(x, y);
    std::memcpy(f.data, data, x * y * desired_channels);
    stbi_image_free(data);
    return f;
}

}  // namespace freling