git.sesse.net Git - casparcg/blob - modules/image/util/image_loader.cpp

   1 #include "image_loader.h"\r
   2 \r
   3 #include <common/exception/Exceptions.h>\r
   4 #include <common/utility/string.h>\r
   5 \r
   6 #if defined(_MSC_VER)\r
   7 #pragma warning (disable : 4714) // marked as __forceinline not inlined\r
   8 #endif\r
   9 \r
  10 #include <boost/filesystem.hpp>\r
  11 #include <boost/exception/errinfo_file_name.hpp>\r
  12 #include <boost/thread/once.hpp>\r
  13 \r
  14 namespace caspar { \r
  15 \r
  16 std::shared_ptr<FIBITMAP> load_image(const std::string& filename)\r
  17 {\r
  18         struct FreeImage_initializer\r
  19         {\r
  20                 FreeImage_initializer(){FreeImage_Initialise(true);}\r
  21                 ~FreeImage_initializer(){FreeImage_DeInitialise();}\r
  22         } static init;\r
  23 \r
  24         if(!boost::filesystem::exists(filename))\r
  25                 BOOST_THROW_EXCEPTION(file_not_found() << boost::errinfo_file_name(filename));\r
  26 \r
  27         FREE_IMAGE_FORMAT fif = FIF_UNKNOWN;\r
  28         fif = FreeImage_GetFileType(filename.c_str(), 0);\r
  29         if(fif == FIF_UNKNOWN) \r
  30                 fif = FreeImage_GetFIFFromFilename(filename.c_str());\r
  31                 \r
  32         if(fif == FIF_UNKNOWN || !FreeImage_FIFSupportsReading(fif)) \r
  33                 BOOST_THROW_EXCEPTION(invalid_argument() << msg_info("Unsupported image format."));\r
  34                 \r
  35         auto bitmap = std::shared_ptr<FIBITMAP>(FreeImage_Load(fif, filename.c_str(), 0), FreeImage_Unload);\r
  36                   \r
  37         if(FreeImage_GetBPP(bitmap.get()) != 32)\r
  38         {\r
  39                 bitmap = std::shared_ptr<FIBITMAP>(FreeImage_ConvertTo32Bits(bitmap.get()), FreeImage_Unload);\r
  40                 if(!bitmap)\r
  41                         BOOST_THROW_EXCEPTION(invalid_argument() << msg_info("Unsupported image format."));                     \r
  42         }\r
  43         \r
  44         return bitmap;\r
  45 }\r
  46 \r
  47 std::shared_ptr<FIBITMAP> load_image(const std::wstring& filename)\r
  48 {\r
  49         return load_image(narrow(filename));\r
  50 }\r
  51 \r
  52 }