I’m trying to learn how to use gpu decoder. I have read the sample program “cudaDecodeD3D9”. If I want to do some video postprocessing such as edge detection, how can I access the image data of each frame?
I have noticed the code below:
// perform post processing on the CUDA surface (performs colors space conversion and post processing) // comment this out if we inclue the line of code seen above cudaPostProcessFrame(&pDecodedFrame, nDecodedPitch, &pTextureData, nTexturePitch, g_pCudaModule->getModule(), gfpNV12toARGB, g_KernelSID);
I dont know how this code can perform colors space conversion. Which variable is the image data pointer?