Camera Server Daemon Process Tool

Table of Contents

• Description
• Prerequisites
• Running the Tool
• Output

Description

The NVIDIA^® DriveWorks Camera Server Daemon Process tool performs three functions:

1. Reads frames from GMSL Cameras based on custom configurations through the command line, i.e. interface, numLinks, and fifo-size parameters.
2. Waits on a specific port, accepting any client process's connection to the current interface. camera_client is used in this document to represent either sample_cameraserver_client or sample_cameraserver_client_raw
3. Broadcasts frames to all client connections based on their configurations for the consumer, e.g. raw/processed images, FIFO/Mailbox queueing strategy, and different sibling numbers.

Note

SW Release Applicability: This tool is available in both NVIDIA DriveWorks and NVIDIA DRIVE Software releases.

Important

• Launch one camera_server process for one particular camera group at a time.
• Run the camera_server and camera_client processes from different terminals.
• Launch the camera_server process first before launching any camera_client processes.
• Kill all camera_client processes before killing the camera_server processes.

Prerequisites

This tool is available on NVIDIA DRIVE^™ OS Linux.

This tool creates output files that are placed into the current working directory by default. Please ensure the following for your convenience:

• Write permissions are enabled for the current working directory.
• Include the tools folder in the binary search path of the system.
• Execute from your home directory.

Running the Tool

Run the tool by executing:

./camera_server --params=[comma/separated/key/value/pairs]
                --port=[tcp_port_num]
                --numLinks=[num_cameras]

Where:

--params=[comma/separated/key/value/pairs]
    Specifies string used to initialize the cameras
    Default value: camera-name=SF3324,interface=csi-a,fifo-size=12,output-format=yuv+raw

--port=[tcp_port_num]
    Specifies the port # used to listen for consumer connections
    Default value: 49252

--numLinks=[num_cameras]
    Specifies the # of cameras to be launched. Used with SIPL since camera-count is deprecated
    Default value: 1

Output

Enter the camera_client command on the other terminal to see the cross-process image frame distribution process.