Struct CachedDmaBuf 

struct CachedDmaBuf {
    identity: DmaBufIdentity,
    last_use: u64,
    egl_image: *mut c_void,
    cuda_resource: *mut c_void,
    egl_frame: CUeglFrame,
    input: DmaBufInput,
    tex: CUtexObject,
}

Cached CUDA import of a dmabuf, keyed by fd so a recurring capture buffer is imported once: the EGLImageKHR, the CUDA graphics resource it registers as, the mapped CUeglFrame, and how that frame reaches NVENC. Torn down on drop / reconfigure, or evicted when the fd it is keyed by no longer names the same buffer (see DmaBufIdentity).

Fields

identity: DmaBufIdentity

last_use: u64

The frame number that last encoded from the import, for evicting the stalest.

egl_image: *mut c_void

cuda_resource: *mut c_void

egl_frame: CUeglFrame

input: DmaBufInput

tex: CUtexObject

The texture the chroma convert reads an array-typed import through, so its RGB is never copied into linear memory. Zero where the import is linear or carries no convert.