Hi John, I have added the necessary this-> to hopefully make the lib compile with gcc now. Can you pull the latest and try again?
any_supported_image<jpeg_tag> result; read_image(fname, result, jpeg_tag())
gil::apply_operation(result, my_operation)
Ah, I see. Nice idea, I will add it to my todo list.
On another note, I dont think you need filesystem to check the extension of the images. You can use the boost string algorithms library (or just use std::string operations).
bool can_read(std::string filename, jpeg_tag const& ){ static const string extensions[] = {".jpg", ".jpeg" }; return ::boost::algorithm::iends_with(filename, extensions[0]) || ::boost::algorithm::iends_with(filename, extensions[1]); }
You're right. This should work, as well. Thanks!
Also, I beleive some of the image formats can peek at the first few bytes of the file to determine if the format is appropriate. I dont know about non-windows systems, but on some of them this might be the only way to tell. If that is the way image formats are checked, then I dont think filesystem (or string algs) is going to be important.
For now, I believe the file extension will do. Thanks again, Christian