Using VPI in a Custom DeepStream Plugin

Accelerated Computing Intelligent Video Analytics DeepStream SDK
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3

Hi,

1.
Do you see the attached file in this comment?
We wrap the buffer with vpiImageCreateCUDAMemWrapper directly to avoid duplicate buffer mapping.

2.
Since perspective warp is not a point-to-point operation, you need to use different buffers to store input and output.

CHECK_VPI_STATUS(vpiSubmitPerspectiveWarp(dsexample->vpi_stream, 0, dsexample->warp, img, xform, out
                                            , VPI_INTERP_LINEAR, VPI_BORDER_ZERO, 0));
CHECK_VPI_STATUS(vpiSubmitConvertImageFormat(dsexample->vpi_stream, VPI_BACKEND_CUDA, out, img, NULL));
CHECK_VPI_STATUS(vpiStreamSync(dsexample->vpi_stream))

Please check the attached file for the detailed implementation.

Thanks.

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