obs-StreamFX/source/nvidia/cuda/nvidia-cuda.cpp

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/*
* Modern effects for a modern Streamer
* Copyright (C) 2020 Michael Fabian Dirks
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "nvidia-cuda.hpp"
#include <stdexcept>
#include <util/platform.h>
#if defined(_WIN32) || defined(_WIN64)
#define CUDA_NAME "nvcuda.dll"
#else
#define CUDA_NAME "libcuda.so.1"
#endif
#define CUDA_LOAD_SYMBOL(NAME) \
{ \
NAME = static_cast<decltype(NAME)>(os_dlsym(_library, #NAME)); \
if (!NAME) \
throw std::runtime_error("Failed to load '" #NAME "' from '" CUDA_NAME "'."); \
}
#define CUDA_LOAD_SYMBOL_V2(NAME) \
{ \
NAME = static_cast<decltype(NAME)>(os_dlsym(_library, #NAME "_v2")); \
if (!NAME) \
throw std::runtime_error("Failed to load '" #NAME "' from '" CUDA_NAME "'."); \
}
#define CUDA_LOAD_SYMBOL_EX(NAME, OVERRIDE) \
{ \
NAME = static_cast<decltype(NAME)>(os_dlsym(_library, #OVERRIDE)); \
if (!NAME) \
throw std::runtime_error("Failed to load '" #NAME "' from '" CUDA_NAME "'."); \
}
nvidia::cuda::cuda::cuda()
{
_library = os_dlopen(CUDA_NAME);
if (!_library)
throw std::runtime_error("Failed to load '" CUDA_NAME "'.");
// Initialization
CUDA_LOAD_SYMBOL(cuInit);
// Version Management
CUDA_LOAD_SYMBOL(cuDriverGetVersion);
// Primary Context Management
CUDA_LOAD_SYMBOL(cuDevicePrimaryCtxRetain);
CUDA_LOAD_SYMBOL_V2(cuDevicePrimaryCtxRelease);
CUDA_LOAD_SYMBOL_V2(cuDevicePrimaryCtxSetFlags);
// Context Management
CUDA_LOAD_SYMBOL_V2(cuCtxCreate);
CUDA_LOAD_SYMBOL_V2(cuCtxDestroy);
CUDA_LOAD_SYMBOL(cuCtxGetCurrent);
CUDA_LOAD_SYMBOL(cuCtxGetStreamPriorityRange);
CUDA_LOAD_SYMBOL_V2(cuCtxPopCurrent);
CUDA_LOAD_SYMBOL_V2(cuCtxPushCurrent);
CUDA_LOAD_SYMBOL(cuCtxSetCurrent);
CUDA_LOAD_SYMBOL(cuCtxSynchronize);
// Memory Management
CUDA_LOAD_SYMBOL_V2(cuArrayGetDescriptor);
CUDA_LOAD_SYMBOL_V2(cuMemAlloc);
CUDA_LOAD_SYMBOL_V2(cuMemAllocPitch);
CUDA_LOAD_SYMBOL_V2(cuMemFree);
CUDA_LOAD_SYMBOL_V2(cuMemHostGetDevicePointer);
CUDA_LOAD_SYMBOL(cuMemcpy);
CUDA_LOAD_SYMBOL_V2(cuMemcpy2D);
CUDA_LOAD_SYMBOL_V2(cuMemcpy2DAsync);
CUDA_LOAD_SYMBOL_V2(cuMemcpyAtoA);
CUDA_LOAD_SYMBOL_V2(cuMemcpyAtoD);
CUDA_LOAD_SYMBOL_V2(cuMemcpyAtoH);
CUDA_LOAD_SYMBOL_V2(cuMemcpyAtoHAsync);
CUDA_LOAD_SYMBOL_V2(cuMemcpyDtoA);
CUDA_LOAD_SYMBOL_V2(cuMemcpyDtoD);
CUDA_LOAD_SYMBOL_V2(cuMemcpyDtoH);
CUDA_LOAD_SYMBOL_V2(cuMemcpyDtoHAsync);
CUDA_LOAD_SYMBOL_V2(cuMemcpyHtoA);
CUDA_LOAD_SYMBOL_V2(cuMemcpyHtoAAsync);
CUDA_LOAD_SYMBOL_V2(cuMemcpyHtoD);
CUDA_LOAD_SYMBOL_V2(cuMemcpyHtoDAsync);
// Stream Managment
CUDA_LOAD_SYMBOL(cuStreamCreate);
CUDA_LOAD_SYMBOL(cuStreamCreateWithPriority);
CUDA_LOAD_SYMBOL_V2(cuStreamDestroy);
CUDA_LOAD_SYMBOL(cuStreamSynchronize);
// Graphics Interoperability
CUDA_LOAD_SYMBOL(cuGraphicsMapResources);
CUDA_LOAD_SYMBOL(cuGraphicsSubResourceGetMappedArray);
CUDA_LOAD_SYMBOL(cuGraphicsUnmapResources);
CUDA_LOAD_SYMBOL(cuGraphicsUnregisterResource);
#ifdef WIN32
// Direct3D11 Interopability
CUDA_LOAD_SYMBOL(cuD3D11GetDevice);
CUDA_LOAD_SYMBOL(cuGraphicsD3D11RegisterResource);
#endif
// Initialize CUDA
cuInit(0);
}
nvidia::cuda::cuda::~cuda()
{
os_dlclose(_library);
}