1 #include "lib/image.hpp" 2 3 auto lib::image::is_jpeg(const std::vector<unsigned char> &data) -> bool 4 { 5 if (data.size() < 3) 6 { 7 return false; 8 } 9 10 // JPEG magic number 11 return data.at(0) == 0xff 12 && data.at(1) == 0xd8 13 && data.at(2) == 0xff; 14 } 15