obs-StreamFX/source/source-mirror.h

/*
* 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 <condition_variable>
#include <memory>
#include <mutex>
#include <thread>
#include <vector>
#include "gfx-source-texture.h"
#include "gs-rendertarget.h"
#include "gs-sampler.h"
#include "obs-audio-capture.h"
#include "obs-source.hpp"
#include "plugin.h"

extern "C" {
#include <obs-source.h>
}

namespace Source {
	class MirrorAddon {
		obs_source_info osi;

		public:
		MirrorAddon();
		~MirrorAddon();

		static const char*       get_name(void*);
		static void              get_defaults(obs_data_t*);
		static bool              modified_properties(obs_properties_t*, obs_property_t*, 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*);
		static void enum_active_sources(void*, obs_source_enum_proc_t, void*);
	};

	class Mirror {
		bool          m_active = false;
		obs_source_t* m_source = nullptr;
		float_t       m_tick   = 0;

		// Input
		obs_scene_t*                         m_scene = nullptr;
		std::shared_ptr<obs::source>         m_scene_source;
		std::unique_ptr<gfx::source_texture> m_source_texture;

		// Input Source
		obs_sceneitem_t* m_sceneitem = nullptr;
		std::string      m_source_name;

		// Scaling
		bool                              m_rescale = false;
		uint32_t                          m_width;
		uint32_t                          m_height;
		gs_effect_t*                      m_scaling_effect     = nullptr;
		bool                              m_keep_original_size = false;
		std::unique_ptr<gs::rendertarget> m_render_target_scale;
		std::shared_ptr<gs::sampler>      m_sampler;

		// Audio
		bool                                m_enable_audio = false;
		std::unique_ptr<obs::audio_capture> m_audio_capture;
		std::mutex                          m_audio_lock;
		std::condition_variable             m_audio_notify;
		obs_source_audio                    m_audio_output;
		std::vector<std::vector<float_t>>   m_audio_data;
		std::thread                         m_audio_thread;
		bool                                m_kill_audio_thread = false;
		bool                                m_have_audio_output = false;

		public:
		Mirror(obs_data_t*, obs_source_t*);
		~Mirror();

		uint32_t get_width();
		uint32_t get_height();

		void update(obs_data_t*);
		void activate();
		void deactivate();
		void video_tick(float);
		void video_render(gs_effect_t*);
		void audio_capture_cb(void* data, const audio_data* audio, bool muted);
		void audio_output_cb();
		void enum_active_sources(obs_source_enum_proc_t, void*);
	};
}; // namespace Source