[FFmpeg-devel] [PATCH 2/2] libavutil/hwcontect_cuda: add option to use current CUDA context

[Timo Rothenpieler]

On 14.09.2023 18:52, Roman Arzumanyan wrote:
> Got it, thanks.
> Please find the patches in attachment.
> 
> Just for my own understanding - could you please explain how this magic 
> works in the configure script? I mean this section:
> 
> if ! disabled ffnvcodec; then
> 
> ffnv_hdr_list="ffnvcodec/nvEncodeAPI.h ffnvcodec/dynlink_cuda.h 
> ffnvcodec/dynlink_cuviddec.h ffnvcodec/dynlink_nvcuvid.h"
> 
> check_pkg_config ffnvcodec "ffnvcodec >= 12.1.14.0" "$ffnv_hdr_list" "" || \
> 
> check_pkg_config ffnvcodec "ffnvcodec >= 12.0.16.0ffnvcodec < 12.1" 
> "$ffnv_hdr_list" "" || \
> 
> check_pkg_config ffnvcodec "ffnvcodec >= 11.1.5.2 ffnvcodec < 12.0" 
> "$ffnv_hdr_list" "" || \
> 
> check_pkg_config ffnvcodec "ffnvcodec >= 11.0.10.2 ffnvcodec < 11.1" 
> "$ffnv_hdr_list" "" || \
> 
> check_pkg_config ffnvcodec "ffnvcodec >= 8.1.24.14 ffnvcodec < 8.2" 
> "$ffnv_hdr_list" ""
> 
> fi

No, only versions bigger than the given minimum in the respective branch 
will pass.
11.0.0.0 would not pass, it's outside of any valid range. And so on for 
other versions.