[FFmpeg-devel] [PATCH] nv-codec-headers: add cuMemcpy

[leozhang]

Timo Rothenpieler <timo at rothenpieler.org> 于2020年11月13日周五 下午8:20写道：
>
> Please also add cuMemcpyAsync while at it.
Will add it.
>
> What for and where is this needed?
cuMemcpy is used to copy 1D array between host and device. For
example, the gauss blur filter weights can be calculated by CPU, then
memcpy to device memory, and futher load to shared memory to later
use. It's much speed up then calculating duplicated weights by per GPU
thread.
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