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如何准备MSGPack在ZeroMQ基础结构上发送结构?

msgpack c++11 c++

1

2adnielsenx xx · 技术社区 · 8 年前

struct 共:

struct Content{
    std::vector<cv::Mat> image;
    std::string msg;
};

msgpack 以下内容:

Content content;
content.image = msg2;
content.mesaj = "naber kardes";

msgpack::type::tuple<Content> src(content);
//                            serialize the object into the buffer.
//                            any classes that implements
//                            write(const char*,size_t) can be a buffer.
std::stringstream buffer;
msgpack::pack(buffer, src);
cout << sizeof(buffer) << endl;

/usr/local/include/msgpack/v1/object.hpp:631:11:错误:在“content”中没有名为“msgpack-pack”的成员

如何在ZeroMQ的帮助下发送内容结构是吗?

1 回复 | 直到 8 年前

1

Jens Luedicke 8 年前

你需要提供一个 pack() Content 结构:

namespace msgpack
{
MSGPACK_API_VERSION_NAMESPACE(MSGPACK_DEFAULT_API_NS)
{
namespace adaptor
{

template <>
struct pack<Content> {
    template <typename Stream>
    msgpack::packer<Stream>& operator()(
                msgpack::packer<Stream>& out, Content const& obj) const
    {
        out.pack(obj.image);
        out.pack(obj.msg);
        return out;
    }
};

}
}
}

包()

示例函数(与

template <>
struct convert<Content> {
    msgpack::object const& operator()(
                msgpack::object const& o, Content& v) const
    {
        // unpack data in the same format as it was packed. see above!     
        return o;
    }
};