/*
**  ClanLib SDK
**  Copyright (c) 1997-2020 The ClanLib Team
**
**  This software is provided 'as-is', without any express or implied
**  warranty.  In no event will the authors be held liable for any damages
**  arising from the use of this software.
**
**  Permission is granted to anyone to use this software for any purpose,
**  including commercial applications, and to alter it and redistribute it
**  freely, subject to the following restrictions:
**
**  1. The origin of this software must not be misrepresented; you must not
**     claim that you wrote the original software. If you use this software
**     in a product, an acknowledgment in the product documentation would be
**     appreciated but is not required.
**  2. Altered source versions must be plainly marked as such, and must not be
**     misrepresented as being the original software.
**  3. This notice may not be removed or altered from any source distribution.
**
**  Note: Some of the libraries ClanLib may link to may have additional
**  requirements or restrictions.
**
**  File Author(s):
**
**    Magnus Norddahl
*/

#pragma once

namespace clan
{
	class JPEGLoader;
	class JPEGMCUDecoder;

	class JPEGRGBDecoder
	{
	public:
		JPEGRGBDecoder(JPEGLoader *loader);
		~JPEGRGBDecoder();

		void decode(JPEGMCUDecoder *mcu_decoder);

		int get_width() const { return mcu_x * 8; }
		int get_height() const { return mcu_y * 8; }
		const unsigned int *get_pixels() const { return pixels; }

	private:
		void upsample(JPEGMCUDecoder *mcu_decoder);
		void convert_monochrome();
		void convert_ycrcb_sse();
		void convert_ycrcb_float();
		void convert_rgb();

		JPEGLoader *loader;
		int mcu_x, mcu_y;
		unsigned int *pixels;
		std::vector<unsigned char *> channels;
	};
}
