obs-StreamFX/source/filter-custom-shader.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 <cinttypes>
#include <list>
#include <vector>
#include "gfx-effect-source.hpp"
#include "gs-effect.hpp"
#include "gs-rendertarget.hpp"
#include "plugin.hpp"

namespace filter {
	class CustomShader {
		public:
		CustomShader();
		~CustomShader();

		static const char*       get_name(void*);
		static void              get_defaults(obs_data_t*);
		static obs_properties_t* get_properties(void*);

		static void*    create(obs_data_t*, obs_source_t*);
		static void     destroy(void*);
		static uint32_t get_width(void*);
		static uint32_t get_height(void*);
		static void     update(void*, obs_data_t*);
		static void     activate(void*);
		static void     deactivate(void*);
		static void     video_tick(void*, float);
		static void     video_render(void*, gs_effect_t*);

		private:
		obs_source_info sourceInfo;

		private:
		class Instance : public gfx::effect_source {
			friend class CustomShader;

			std::shared_ptr<gs::rendertarget> m_renderTarget;

			protected:
			bool         apply_special_parameters(uint32_t viewW, uint32_t viewH);
			virtual bool is_special_parameter(std::string name, gs::effect_parameter::type type) override;
			virtual bool video_tick_impl(float_t time) override;
			virtual bool video_render_impl(gs_effect_t* parent_effect, uint32_t viewW, uint32_t viewH) override;

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

			uint32_t get_width();
			uint32_t get_height();
		};
	};
} // namespace filter