Bounding box coordinates from source file

For Deepstream 5.0, while using the source file directly instead of the test app, how do I acquire the bounding box coordinates of the objects detected?

• Hardware Platform (Jetson / GPU) Jetson AGX
• DeepStream Version 5.0
• JetPack Version (valid for Jetson only)
• TensorRT Version
• NVIDIA GPU Driver Version (valid for GPU only)
• Issue Type( questions, new requirements, bugs)
• How to reproduce the issue ? (This is for bugs. Including which sample app is using, the configuration files content, the command line used and other details for reproducing)
• Requirement details( This is for new requirement. Including the module name-for which plugin or for which sample application, the function description)

You can access the bbox through meta data, you can refer the probe function of deepstream-test1 app.