@startuml
autonumber

box "Container" #LightGreen
participant GStreamer_client
participant rialtoClient
end box

box "Platform" #LightBlue
participant rialtoServer
participant GStreamer_server
end box

GStreamer_client  ->  rialtoClient:     getStats(pipeline_session, source_id)
rialtoClient      ->  rialtoServer:     getStats(pipeline_session, source_id)
rialtoServer      ->  GStreamer_server: g_object_get(pipeline, "stats", &stats)
GStreamer_server  --> rialtoServer:     GstStructure *stats; containing rendered_frames, dropped_frames
rialtoServer      --> rialtoClient:     rendered_frames, dropped_frames
rialtoClient      --> GStreamer_client: stats
@enduml

GstStructure *stats{nullptr};
g_object_get(sink, "stats", &stats, nullptr);
if (stats)
{
    guint64 renderedVideoFrames;
    guint64 droppedVideoFrames;
    if (gst_structure_get_uint64(stats, "rendered", &renderedVideoFrames) &&
        gst_structure_get_uint64(stats, "dropped", &droppedVideoFrames))
    {
        std::cout << "renderedVideoFrames " << renderedVideoFrames << std::endl;
        std::cout << "droppedVideoFrames " << droppedVideoFrames << std::endl;
    }
    gst_structure_free(stats);
}