CosResult GetMediaInfo(const GetMediaInfoReq& request, GetMediaInfoResp* response);

qcloud_cos::CosConfig config("./config.json");
qcloud_cos::CosAPI cos(config);
GetMediaInfoReq req(bucket_name, object_name);
GetMediaInfoResp resp;
CosResult result = cos.GetMediaInfo(req, &resp);
if (result.IsSucc()) {
   // The call is successful. You can call the `resp` member functions to get the return content.
   std::cout << "Result: " << resp.GetResult().to_string() << std::endl;
} else {
   // The call failed. You can call the `result` member functions to get the error information.
}