/*
 * Copyright 2012, Blender Foundation.
 *
 * 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.
 *
 * Contributor:
 *		Jeroen Bakker
 *		Monique Dewanchand
 *		Sergey Sharybin
 */

#include "COM_MaskOperation.h"

#include "MEM_guardedalloc.h"

#include "BLI_listbase.h"
#include "BLI_math.h"

#include "DNA_scene_types.h"


#ifdef USE_RASKTER

extern "C" {
	#include "../../../../intern/raskter/raskter.h"
}

MaskOperation::MaskOperation() : NodeOperation()
{
	this->addOutputSocket(COM_DT_VALUE);
	this->m_mask = NULL;
	this->m_maskWidth = 0;
	this->m_maskHeight = 0;
	this->m_framenumber = 0;
	this->m_rasterizedMask = NULL;
	setComplex(true);
}

void MaskOperation::initExecution()
{
	initMutex();

	this->m_rasterizedMask = NULL;
	this->m_maskLayers.first = this->m_maskLayers.last = NULL;

	if (this->m_mask) {
		BKE_mask_layer_copy_list(&this->m_maskLayers, &this->m_mask->masklayers);
	}
}

void MaskOperation::deinitExecution()
{
	BKE_mask_layer_free_list(&this->m_maskLayers);

	if (this->m_rasterizedMask) {
		MEM_freeN(this->m_rasterizedMask);
		this->m_rasterizedMask = NULL;
	}
}

void *MaskOperation::initializeTileData(rcti *rect)
{
	if (this->m_rasterizedMask)
		return this->m_rasterizedMask;

	if (!this->m_mask)
		return NULL;

	lockMutex();
	if (this->m_rasterizedMask == NULL) {
		int width = this->getWidth();
		int height = this->getHeight();
		float *buffer;

		buffer = (float *)MEM_callocN(sizeof(float) * width * height, "rasterized mask");

		BKE_mask_rasterize_layers(&this->m_maskLayers, width, height, buffer, TRUE,
		                          this->m_do_smooth, this->m_do_feather);

		if (this->m_do_smooth) {
			PLX_antialias_buffer(buffer, width, height);
		}

		this->m_rasterizedMask = buffer;
	}
	unlockMutex();
	return this->m_rasterizedMask;
}

void MaskOperation::determineResolution(unsigned int resolution[], unsigned int preferredResolution[])
{
	if (this->m_maskWidth == 0 || this->m_maskHeight == 0) {
		NodeOperation::determineResolution(resolution, preferredResolution);
	}
	else {
		unsigned int nr[2];

		nr[0] = this->m_maskWidth;
		nr[1] = this->m_maskHeight;

		NodeOperation::determineResolution(resolution, nr);

		resolution[0] = this->m_maskWidth;
		resolution[1] = this->m_maskHeight;
	}
}

void MaskOperation::executePixel(float *color, int x, int y, void *data)
{
	if (!data) {
		color[0] = 0.0f;
	}
	else {
		float *buffer = (float *) data;
		int index = (y * this->getWidth() + x);

		color[0] = buffer[index];
	}
}

#else /* mask rasterizer by campbell wip */

MaskOperation::MaskOperation() : NodeOperation()
{
	this->addOutputSocket(COM_DT_VALUE);
	this->m_mask = NULL;
	this->m_maskWidth = 0;
	this->m_maskHeight = 0;
	this->m_framenumber = 0;
	this->m_rasterMaskHandle = NULL;
	setComplex(true);
}

void MaskOperation::initExecution()
{
	initMutex();

	if (this->m_rasterMaskHandle == NULL) {
		const int width = this->getWidth();
		const int height = this->getHeight();

		this->m_rasterMaskHandle = BLI_maskrasterize_handle_new();

		BLI_maskrasterize_handle_init(this->m_rasterMaskHandle, this->m_mask, width, height, TRUE, this->m_do_smooth, this->m_do_feather);
	}
}

void MaskOperation::deinitExecution()
{
	if (this->m_rasterMaskHandle) {
		BLI_maskrasterize_handle_free(this->m_rasterMaskHandle);
		this->m_rasterMaskHandle = NULL;
	}

	deinitMutex();
}

void *MaskOperation::initializeTileData(rcti *rect)
{
	/* pass */
	return NULL;
}

void MaskOperation::determineResolution(unsigned int resolution[], unsigned int preferredResolution[])
{
	if (this->m_maskWidth == 0 || this->m_maskHeight == 0) {
		NodeOperation::determineResolution(resolution, preferredResolution);
	}
	else {
		unsigned int nr[2];

		nr[0] = this->m_maskWidth;
		nr[1] = this->m_maskHeight;

		NodeOperation::determineResolution(resolution, nr);

		resolution[0] = this->m_maskWidth;
		resolution[1] = this->m_maskHeight;
	}
}

void MaskOperation::executePixel(float *color, int x, int y, void *data)
{
	const float xy[2] = {x / (float)this->m_maskWidth, y / (float)this->m_maskHeight};
	color[0] = BLI_maskrasterize_handle_sample(this->m_rasterMaskHandle, xy);
}

#endif /* USE_RASKTER */