Image NvTransform with the embedded data line

[liuq1]

We use the multimedia api to capture the image. The image is 1920*1551, in which 1920 * 1536 is active data line. There are 15 embedded data line.

We want to capture the active data and embedded line of image at the same time.
We need to do the image scale and parse the embedded data.

Is there any sample in multimedia , thanks!

We use the V4L2_MEMORY_DMABUF to capture the image, but the bottom area looks abnormal after using NvTransform to do image scale.

[carolyuu]

Hi,

For the camera basic functionality first needs to check the device and driver configuration.
You can reference to below program guide for the detailed information of device tree and driver implementation.
https://docs.nvidia.com/jetson/archives/r36.3/DeveloperGuide/SD/CameraDevelopment/SensorSoftwareDriverProgramming.html?highlight=programing#sensor-software-driver-programming

Please refer to Applications Using V4L2 IOCTL Directly by using V4L2 IOCTL to verify basic camera functionality.
https://docs.nvidia.com/jetson/archives/r36.3/DeveloperGuide/SD/CameraDevelopment/SensorSoftwareDriverProgramming.html?highlight=programing#to-run-a-v4l2-ctl-test

Once confirm the configure and still failed below link help to get log and some information and some tips for debug.
https://elinux.org/Jetson/l4t/Camera_BringUp#Steps_to_enable_more_debug_messages

Thanks!

[JerryChang]

hello liuq1,

please refer to developer guide, please configure device tree property, embedded_metadata_height.