Add MetadataFrame

src/PyMetadataFrame.cpp

@@ -0,0 +1,18 @@
+#include "PyMetadataFrame.hpp"
+
+PyMetadataFrame::PyMetadataFrame(int length_, int64_t timecode_,
+                                 const std::string &data_)
+    : _data(data_) {
+  length = length_;
+  timecode = timecode_;
+  p_data = &_data[0];
+}
+
+PyMetadataFrame::~PyMetadataFrame() {}
+
+const std::string &PyMetadataFrame::getData() const { return _data; }
+
+void PyMetadataFrame::setData(const std::string &data) {
+  _data = data;
+  p_data = &_data[0];
+}

src/PyMetadataFrame.hpp

@@ -0,0 +1,15 @@
+#include <string>
+
+#include <Processing.NDI.Lib.h>
+
+class PyMetadataFrame : public NDIlib_metadata_frame_t {
+public:
+  PyMetadataFrame(int length_, int64_t timecode_, const std::string &data_);
+  virtual ~PyMetadataFrame();
+
+  const std::string &getData() const;
+  void setData(const std::string &data);
+
+private:
+  std::string _data;
+};

src/main.cpp

@@ -1,6 +1,7 @@
 #include <pybind11/numpy.h>
 #include <pybind11/pybind11.h>
 
+#include "PyMetadataFrame.hpp"
 #include "PySource.hpp"
 #include "PyVideoFrame.hpp"
 
@@ -148,13 +149,14 @@ PYBIND11_MODULE(NDIlib, m) {
       .def_readwrite("metadata", &NDIlib_audio_frame_v2_t::p_metadata)
       .def_readwrite("timestamp", &NDIlib_audio_frame_v2_t::timestamp);
 
-  py::class_<NDIlib_metadata_frame_t>(m, "MetadataFrame")
+  py::class_<PyMetadataFrame>(m, "MetadataFrame")
-      .def(py::init<int, int64_t, char *>(), py::arg("length") = 0,
+      .def(py::init<int, int64_t, const std::string &>(), py::arg("length") = 0,
            py::arg("timecode") = NDIlib_send_timecode_synthesize,
            py::arg("data") = nullptr)
-      .def_readwrite("length", &NDIlib_metadata_frame_t::length)
+      .def_readwrite("length", &PyMetadataFrame::length)
-      .def_readwrite("timecode", &NDIlib_metadata_frame_t::timecode)
+      .def_readwrite("timecode", &PyMetadataFrame::timecode)
-      .def_readwrite("data", &NDIlib_metadata_frame_t::p_data);
+      .def_property("data", &PyMetadataFrame::getData,
+                    &PyMetadataFrame::setData);
 
   py::class_<NDIlib_tally_t>(m, "Tally")
       .def(py::init<bool, bool>(), py::arg("on_program") = false,