obs-StreamFX/source/obs/gs/gs-helper.hpp

/*
 * 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 "common.hpp"
#include <vector>
#include "plugin.hpp"

namespace streamfx::obs::gs {
	class context {
		public:
		inline context()
		{
			obs_enter_graphics();
			if (gs_get_context() == nullptr)
				throw std::runtime_error("Failed to enter graphics context.");
		}
		~context()
		{
			obs_leave_graphics();
		}
	};

#ifdef ENABLE_PROFILING
	static constexpr float_t debug_color_white[4]           = {1.f, 1.f, 1.f, 1.f};
	static constexpr float_t debug_color_gray[4]            = {.5f, .5f, .5f, 1.f};
	static constexpr float_t debug_color_black[4]           = {0.f, 0.f, 0.f, 1.f};
	static constexpr float_t debug_color_red[4]             = {1.f, 0.f, 0.f, 1.f};
	static constexpr float_t debug_color_flush_orange[4]    = {1.f, .5f, 0.f, 1.f};
	static constexpr float_t debug_color_yellow[4]          = {1.f, 1.f, 0.f, 1.f};
	static constexpr float_t debug_color_chartreuse[4]      = {.5f, 1.f, 0.f, 1.f};
	static constexpr float_t debug_color_green[4]           = {0.f, 1.f, 0.f, 1.f};
	static constexpr float_t debug_color_spring_green[4]    = {0.f, 1.f, .5f, 1.f};
	static constexpr float_t debug_color_teal[4]            = {0.f, 1.f, 1.f, 1.f};
	static constexpr float_t debug_color_azure_radiance[4]  = {0.f, .5f, 1.f, 1.f};
	static constexpr float_t debug_color_blue[4]            = {0.f, 0.f, 1.f, 1.f};
	static constexpr float_t debug_color_electric_violet[4] = {.5f, 0.f, 1.f, 1.f};
	static constexpr float_t debug_color_magenta[4]         = {1.f, 0.f, 1.f, 1.f};
	static constexpr float_t debug_color_rose[4]            = {1.f, 0.f, .5f, 1.f};

	static const float_t* debug_color_source       = debug_color_white;
	static const float_t* debug_color_capture      = debug_color_flush_orange;
	static const float_t* debug_color_cache        = debug_color_capture;
	static const float_t* debug_color_convert      = debug_color_electric_violet;
	static const float_t* debug_color_cache_render = debug_color_convert;
	static const float_t* debug_color_copy         = debug_color_azure_radiance;
	static const float_t* debug_color_allocate     = debug_color_red;
	static const float_t* debug_color_render       = debug_color_teal;

	class debug_marker {
		std::string _name;

		public:
		inline debug_marker(const float_t color[4], const char* format, ...)
		{
			std::size_t       size;
			std::vector<char> buffer(64);

			va_list vargs;
			va_start(vargs, format);
			size = static_cast<size_t>(vsnprintf(buffer.data(), buffer.size(), format, vargs));
			va_end(vargs);

			_name = std::string(buffer.data(), buffer.data() + size);
			gs_debug_marker_begin(color, _name.c_str());
		}

		inline ~debug_marker()
		{
			gs_debug_marker_end();
		}
	};
#endif
} // namespace streamfx::obs::gs