/* === S Y N F I G ========================================================= */
/*!	\file synfig/rendering/software/task/taskpixelcolormatrixsw.cpp
**	\brief TaskPixelColorMatrixSW
**
**	\legal
**	......... ... 2016-2018 Ivan Mahonin
**
**	This file is part of Synfig.
**
**	Synfig 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.
**
**	Synfig 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 Synfig.  If not, see <https://www.gnu.org/licenses/>.
**	\endlegal
*/
/* ========================================================================= */

/* === H E A D E R S ======================================================= */

#ifdef USING_PCH
#	include "pch.h"
#else
#ifdef HAVE_CONFIG_H
#	include <config.h>
#endif

#include <synfig/debug/debugsurface.h>

#include "../../common/task/taskpixelprocessor.h"
#include "tasksw.h"

#endif

using namespace synfig;
using namespace rendering;

/* === M A C R O S ========================================================= */

/* === G L O B A L S ======================================================= */

/* === P R O C E D U R E S ================================================= */

/* === M E T H O D S ======================================================= */

namespace {

class TaskPixelColorMatrixSW: public TaskPixelColorMatrix, public TaskSW
{
public:
	typedef etl::handle<TaskPixelColorMatrixSW> Handle;
	static Token token;
	virtual Token::Handle get_token() const { return token.handle(); }

	virtual bool run(RunParams&) const {
		if (!is_valid())
			return true;

		RectInt rd = target_rect;
		ColorMatrix::BatchProcessor processor(matrix);
		std::vector<RectInt> constant_rects(1, rd);

		LockWrite ldst(this);
		if (!ldst) return false;
		synfig::Surface &dst = ldst->get_surface();

		if (!processor.is_constant() && sub_task() && sub_task()->is_valid())
		{
			VectorInt offset = get_offset();
			RectInt rs = sub_task()->target_rect + rd.get_min() + offset;
			rect_set_intersect(rs, rs, rd);
			if (rs.is_valid())
			{
				LockRead lsrc(sub_task());
				if (!lsrc) return false;
				const synfig::Surface &src = lsrc->get_surface();

				rs.list_subtract(constant_rects);
				processor.process(
					&dst[rs.miny][rs.minx],
					dst.get_pitch()/sizeof(Color),
					&src[rs.miny - rd.miny - offset[1]][rs.minx - rd.minx - offset[0]],
					src.get_pitch()/sizeof(Color),
					rs.get_width(),
					rs.get_height() );
			}
		}

		for(std::vector<RectInt>::const_iterator i = constant_rects.begin(); i != constant_rects.end(); ++i)
			dst.fill(processor.get_constant_value(), i->minx, i->miny, i->get_width(), i->get_height());

		return true;
	}
};


Task::Token TaskPixelColorMatrixSW::token(
	DescReal<TaskPixelColorMatrixSW, TaskPixelColorMatrix>("PixelColorMatrixSW") );

} // end of anonimous namespace

/* === E N T R Y P O I N T ================================================= */
