nvidia/cuda/obs: Add simple CUDA manager for OBS

CMakeLists.txt

@@ -948,6 +948,8 @@ if(HAVE_NVIDIA_CUDA)
 	list(APPEND PROJECT_PRIVATE_SOURCE
 		"source/nvidia/cuda/nvidia-cuda.hpp"
 		"source/nvidia/cuda/nvidia-cuda.cpp"
+		"source/nvidia/cuda/nvidia-cuda-obs.hpp"
+		"source/nvidia/cuda/nvidia-cuda-obs.cpp"
 		"source/nvidia/cuda/nvidia-cuda-context.hpp"
 		"source/nvidia/cuda/nvidia-cuda-context.cpp"
 		"source/nvidia/cuda/nvidia-cuda-gs-texture.hpp"

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

@@ -0,0 +1,101 @@
+/*
+ * 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-obs.hpp"
+#include "obs/gs/gs-helper.hpp"
+#include "util/util-logging.hpp"
+
+#ifdef _DEBUG
+#define ST_PREFIX "<%s> "
+#define D_LOG_ERROR(x, ...) P_LOG_ERROR(ST_PREFIX##x, __FUNCTION_SIG__, __VA_ARGS__)
+#define D_LOG_WARNING(x, ...) P_LOG_WARN(ST_PREFIX##x, __FUNCTION_SIG__, __VA_ARGS__)
+#define D_LOG_INFO(x, ...) P_LOG_INFO(ST_PREFIX##x, __FUNCTION_SIG__, __VA_ARGS__)
+#define D_LOG_DEBUG(x, ...) P_LOG_DEBUG(ST_PREFIX##x, __FUNCTION_SIG__, __VA_ARGS__)
+#else
+#define ST_PREFIX "<nvidia::cuda::obs> "
+#define D_LOG_ERROR(...) P_LOG_ERROR(ST_PREFIX __VA_ARGS__)
+#define D_LOG_WARNING(...) P_LOG_WARN(ST_PREFIX __VA_ARGS__)
+#define D_LOG_INFO(...) P_LOG_INFO(ST_PREFIX __VA_ARGS__)
+#define D_LOG_DEBUG(...) P_LOG_DEBUG(ST_PREFIX __VA_ARGS__)
+#endif
+
+nvidia::cuda::obs::~obs()
+{
+	D_LOG_DEBUG("Finalizing... (Addr: 0x%" PRIuPTR ")", this);
+
+	auto gctx = gs::context{};
+	{
+		auto stack = _context->enter();
+		_stream->synchronize();
+		_context->synchronize();
+	}
+	_context.reset();
+	_cuda.reset();
+}
+
+nvidia::cuda::obs::obs() : _cuda(::nvidia::cuda::cuda::get()), _context()
+{
+	D_LOG_DEBUG("Initializating... (Addr: 0x%" PRIuPTR ")", this);
+
+	auto gctx = gs::context{};
+
+	// Create Context
+#ifdef WIN32
+	if (gs_get_device_type() == GS_DEVICE_DIRECT3D_11) {
+		_context = std::make_shared<::nvidia::cuda::context>(reinterpret_cast<ID3D11Device*>(gs_get_device_obj()));
+	}
+#endif
+	if (gs_get_device_type() == GS_DEVICE_OPENGL) {
+		throw std::runtime_error("Not yet implemented.");
+	}
+
+	// Create Stream
+	auto stack = _context->enter();
+	_stream    = std::make_shared<::nvidia::cuda::stream>();
+}
+
+std::shared_ptr<nvidia::cuda::obs> nvidia::cuda::obs::get()
+{
+	static std::weak_ptr<nvidia::cuda::obs> instance;
+	static std::mutex                       lock;
+
+	std::unique_lock<std::mutex> ul(lock);
+	if (instance.expired()) {
+		std::shared_ptr<nvidia::cuda::obs> hard_instance;
+		hard_instance = std::make_shared<nvidia::cuda::obs>();
+		instance      = hard_instance;
+		return hard_instance;
+	}
+	return instance.lock();
+}
+
+std::shared_ptr<nvidia::cuda::cuda> nvidia::cuda::obs::get_cuda()
+{
+	return _cuda;
+}
+
+std::shared_ptr<nvidia::cuda::context> nvidia::cuda::obs::get_context()
+{
+	return _context;
+}
+
+std::shared_ptr<nvidia::cuda::stream> nvidia::cuda::obs::get_stream()
+{
+	return _stream;
+}

source/nvidia/cuda/nvidia-cuda-obs.hpp

@@ -0,0 +1,43 @@
+/*
+ * 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
+ */
+
+#pragma once
+#include <memory>
+#include "nvidia-cuda-context.hpp"
+#include "nvidia-cuda-stream.hpp"
+#include "nvidia-cuda.hpp"
+
+namespace nvidia::cuda {
+	class obs {
+		std::shared_ptr<::nvidia::cuda::cuda>    _cuda;
+		std::shared_ptr<::nvidia::cuda::context> _context;
+		std::shared_ptr<::nvidia::cuda::stream>  _stream;
+
+		public:
+		~obs();
+		obs();
+
+		std::shared_ptr<::nvidia::cuda::cuda>    get_cuda();
+		std::shared_ptr<::nvidia::cuda::context> get_context();
+		std::shared_ptr<::nvidia::cuda::stream>  get_stream();
+
+		public:
+		static std::shared_ptr<::nvidia::cuda::obs> get();
+	};
+} // namespace nvidia::cuda