How to scale frame with specified GPU Index?

NVIDIA / GMAT

A toolkit showing GPU's all-round capability in video processing

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How to scale frame with specified GPU Index? #10

Closed AmosJh closed 7 months ago

AmosJh commented 7 months ago

I have use sws_getContext with flag SWS_HWACCEL_CUDA to get context， and successfully call sws_scale. It is work when frame data is on the GPU0, but when I decode frame on other GPUs, I get error while use function cv::cuda::GpuMat download :，error is :(-217:Gpu API call) an illegal memory access was encountered in function 'download'. How could I specify the GPU index before sws_scale?

AmosJh commented 7 months ago

sorry， I need to call cv::cuda::setDevice(index) before construct cv::cuda::GpuMat value