Special Requirements
- V4L2 Camera (USB or YUV Camera with the format YUYV/YVYU/UYVY/VYUY)
- Display
Overview
This sample demonstrates how to capture images from a V4L2 YUV type of camera and share the image stream with NVIDIA® CUDA® engines to draw a black box on the upper left corner.
Block Diagram
Key Structure and Functions
| Structure | Description |
| context_t | Global structure to save the context for V4L2 camera, VIC, CUDA and EglRenderer. |
| Function | Description |
| init_components | Initializes V4L2 camera, VIC, and EglRenderer. |
| prepare_buffers | Allocates buffers for VIC output_plane and capture_plane. Then, it shares the buffers with V4L2 Camera, CUDA, and EglRenderer. |
| start_stream | Starts V4L2 camera streaming and VIC. |
| conv_capture_dqbuf_thread_callback | Processes the de-queued buffer with CUDA and renders it to the display. |
| start_capture | Main thread to enqueue and dequeue buffers. |
| stop_stream | Stops V4L2 camera streaming. |
Command Line Options
./camera_v4l2_cuda [OPTIONS]
For example:
./camera_v4l2_cuda -d /dev/video0 -s 640x480 -f YUYV -n 30 -c
Use the -h option to view the currently supported options.
