obs-StreamFX/source/filters/filter-displacement.hpp

/*
 * Modern effects for a modern Streamer
 * Copyright (C) 2017 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 <string>
#include "obs/gs/gs-effect.hpp"
#include "obs/obs-source-factory.hpp"
#include "plugin.hpp"

// OBS
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable : 4201)
#endif
#include <obs-source.h>
#include <util/platform.h>
#ifdef _MSC_VER
#pragma warning(pop)
#endif

namespace filter {
	namespace displacement {
		class displacement_instance : public obs::source_instance {
			std::shared_ptr<gs::effect> _effect;

			// Displacement Map
			std::shared_ptr<gs::texture> _texture;
			std::string                  _texture_file;
			float_t                      _scale[2];
			float_t                      _scale_type;

			// Cache
			uint32_t _width;
			uint32_t _height;

			public:
			displacement_instance(obs_data_t*, obs_source_t*);
			virtual ~displacement_instance();

			virtual void load(obs_data_t* settings) override;
			virtual void update(obs_data_t* settings) override;

			virtual void video_tick(float_t) override;
			virtual void video_render(gs_effect_t*) override;

			std::string get_file();
		};

		class displacement_factory : public obs::source_factory<filter::displacement::displacement_factory,
																filter::displacement::displacement_instance> {
			static std::shared_ptr<filter::displacement::displacement_factory> factory_instance;

			public: // Singleton
			static void initialize()
			{
				factory_instance = std::make_shared<filter::displacement::displacement_factory>();
			}

			static void finalize()
			{
				factory_instance.reset();
			}

			static std::shared_ptr<displacement_factory> get()
			{
				return factory_instance;
			}

			public:
			displacement_factory();
			virtual ~displacement_factory();

			virtual const char* get_name() override;

			virtual void get_defaults2(obs_data_t* data) override;

			virtual obs_properties_t* get_properties2(filter::displacement::displacement_instance* data) override;
		};
	} // namespace displacement
} // namespace filter