/*
 * Olive Community Edition - Non-Linear Video Editor
 * Copyright (C) 2025 Olive CE Team
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */

#ifndef RENDERTEXTURE_H
#define RENDERTEXTURE_H

#include <memory>
#include <QVariant>

#include "render/videoparams.h"

namespace olive
{

class AcceleratedJob;
class Renderer;

class Texture;
using TexturePtr = std::shared_ptr<Texture>;

class Texture {
public:
	enum Interpolation { kNearest, kLinear, kMipmappedLinear };

	static const Interpolation kDefaultInterpolation;

	/**
   * @brief Construct a dummy texture with no renderer backend
   */
	Texture(const VideoParams &param)
		: renderer_(nullptr)
		, params_(param)
		, job_(nullptr)
	{
	}

	template <typename T>
	Texture(const VideoParams &p, const T &j)
		: Texture(p)
	{
		job_ = new T(j);
	}

	/**
   * @brief Construct a real texture linked to a renderer backend
   */
	Texture(Renderer *renderer, const QVariant &native,
			const VideoParams &param)
		: renderer_(renderer)
		, params_(param)
		, id_(native)
		, job_(nullptr)
	{
	}

	~Texture();

	QVariant id() const
	{
		return id_;
	}

	const VideoParams &params() const
	{
		return params_;
	}

	template <typename T>
	static TexturePtr Job(const VideoParams &p, const T &j)
	{
		return std::make_shared<Texture>(p, j);
	}

	template <typename T> TexturePtr toJob(const T &job)
	{
		return Texture::Job(params_, job);
	}

	void Upload(void *data, int linesize);

	void Download(void *data, int linesize);

	bool IsDummy() const
	{
		return !renderer_;
	}

	int width() const
	{
		return params_.effective_width();
	}

	int height() const
	{
		return params_.effective_height();
	}

	QVector2D virtual_resolution() const
	{
		return QVector2D(params_.square_pixel_width(), params_.height());
	}

	PixelFormat format() const
	{
		return params_.format();
	}

	int channel_count() const
	{
		return params_.channel_count();
	}

	int divider() const
	{
		return params_.divider();
	}

	const rational &pixel_aspect_ratio() const
	{
		return params_.pixel_aspect_ratio();
	}

	Renderer *renderer() const
	{
		return renderer_;
	}

	bool IsJob() const
	{
		return job_;
	}
	AcceleratedJob *job() const
	{
		return job_;
	}

private:
	Renderer *renderer_;

	VideoParams params_;

	QVariant id_;

	AcceleratedJob *job_;
};

}

Q_DECLARE_METATYPE(olive::TexturePtr)

#endif // RENDERTEXTURE_H