+ public CaptureDevice
+{
+public:
+ /* Create from libsigrok device object. */
+ static Glib::RefPtr<LegacyCaptureDevice> create(
+ shared_ptr<sigrok::HardwareDevice> libsigrok_device);
+
+ /* Retrieve libsigrok device object. */
+ shared_ptr<sigrok::HardwareDevice> libsigrok_device();
+
+ /* Override state change. */
+ Gst::StateChangeReturn change_state_vfunc(Gst::StateChange transition) override;
+
+ /* Gst class init. */
+ static void class_init(Gst::ElementClass<LegacyCaptureDevice> *klass);
+
+ /* Register class with plugin. */
+ static bool register_element(Glib::RefPtr<Gst::Plugin> plugin);
+
+ /* Constructor used by element factory. */
+ explicit LegacyCaptureDevice(GstElement *gobj);
+
+private:
+ shared_ptr<sigrok::HardwareDevice> libsigrok_device_;
+ Glib::RefPtr<Gst::Pad> src_pad_;
+ Glib::Threads::RecMutex mutex_;
+ Glib::RefPtr<Gst::Task> task_;
+ shared_ptr<sigrok::Session> session_;
+
+ void datafeed_callback(shared_ptr<sigrok::Device> device,
+ shared_ptr<sigrok::Packet> packet);
+ void run();
+};
+
+class LegacyInput :
+ public Gst::Element
+{
+public:
+ /* Create from libsigrok input. */
+ static Glib::RefPtr<LegacyInput> create(
+ shared_ptr<sigrok::InputFormat> format,
+ map<string, Glib::VariantBase> options = map<string, Glib::VariantBase>());
+
+ /* Chain function (not an override). */
+ Gst::FlowReturn chain(const Glib::RefPtr<Gst::Pad> &pad,
+ const Glib::RefPtr<Gst::Buffer> &buf);
+
+ /* Event function (not an override). */
+ bool event(const Glib::RefPtr<Gst::Pad> &pad,
+ Glib::RefPtr<Gst::Event> &event);
+
+ /* Gst class init. */
+ static void class_init(Gst::ElementClass<LegacyInput> *klass);
+
+ /* Register class with plugin. */
+ static bool register_element(Glib::RefPtr<Gst::Plugin> plugin);
+
+ /* Constructor used by element factory. */
+ explicit LegacyInput(GstElement *gobj);
+
+private:
+ shared_ptr<sigrok::InputFormat> libsigrok_input_format_;
+ shared_ptr<sigrok::Input> libsigrok_input_;
+ shared_ptr<sigrok::Session> session_;
+ map<string, Glib::VariantBase> options_;
+ Glib::RefPtr<Gst::Pad> sink_pad_;
+ Glib::RefPtr<Gst::Pad> src_pad_;
+
+ void datafeed_callback(shared_ptr<sigrok::Device> device,
+ shared_ptr<sigrok::Packet> packet);
+};
+
+class LegacyOutput :
+ public Sink