Access to a capture frame end embedded data

hello Orinbeginner_XXX,

you may see-also VI-5 driver,
for instance, $public_sources/kernel_src/kernel/nvidia/drivers/media/platform/tegra/camera/vi/vi5_fops.c
for your use-case, embedded data at the bottom of each frame.
image_buf_offset = x
emb_buf_offset = x + size of image data