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/*
* 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.
*
* Copyright 2011, Blender Foundation.
*/
#pragma once
#include "BLI_rect.h"
#include "COM_defines.h"
#ifdef WITH_CXX_GUARDEDALLOC
# include "MEM_guardedalloc.h"
#endif
typedef enum PixelSampler {
COM_PS_NEAREST = 0,
COM_PS_BILINEAR = 1,
COM_PS_BICUBIC = 2,
} PixelSampler;
class MemoryBuffer;
/**
* \brief Helper class for reading socket data.
* Only use this class for dispatching (un-ary and n-ary) executions.
* \ingroup Execution
*/
class SocketReader {
private:
protected:
/**
* \brief Holds the width of the output of this operation.
*/
unsigned int m_width;
/**
* \brief Holds the height of the output of this operation.
*/
unsigned int m_height;
/**
* \brief calculate a single pixel
* \note this method is called for non-complex
* \param result: is a float[4] array to store the result
* \param x: the x-coordinate of the pixel to calculate in image space
* \param y: the y-coordinate of the pixel to calculate in image space
* \param inputBuffers: chunks that can be read by their ReadBufferOperation.
*/
virtual void executePixelSampled(float /*output*/[4],
float /*x*/,
float /*y*/,
PixelSampler /*sampler*/)
{
}
/**
* \brief calculate a single pixel
* \note this method is called for complex
* \param result: is a float[4] array to store the result
* \param x: the x-coordinate of the pixel to calculate in image space
* \param y: the y-coordinate of the pixel to calculate in image space
* \param inputBuffers: chunks that can be read by their ReadBufferOperation.
* \param chunkData: chunk specific data a during execution time.
*/
virtual void executePixel(float output[4], int x, int y, void * /*chunkData*/)
{
executePixelSampled(output, x, y, COM_PS_NEAREST);
}
/**
* \brief calculate a single pixel using an EWA filter
* \note this method is called for complex
* \param result: is a float[4] array to store the result
* \param x: the x-coordinate of the pixel to calculate in image space
* \param y: the y-coordinate of the pixel to calculate in image space
* \param dx:
* \param dy:
* \param inputBuffers: chunks that can be read by their ReadBufferOperation.
*/
virtual void executePixelFiltered(
float /*output*/[4], float /*x*/, float /*y*/, float /*dx*/[2], float /*dy*/[2])
{
}
public:
inline void readSampled(float result[4], float x, float y, PixelSampler sampler)
{
executePixelSampled(result, x, y, sampler);
}
inline void read(float result[4], int x, int y, void *chunkData)
{
executePixel(result, x, y, chunkData);
}
inline void readFiltered(float result[4], float x, float y, float dx[2], float dy[2])
{
executePixelFiltered(result, x, y, dx, dy);
}
virtual void *initializeTileData(rcti * /*rect*/)
{
return 0;
}
virtual void deinitializeTileData(rcti * /*rect*/, void * /*data*/)
{
}
virtual ~SocketReader()
{
}
virtual MemoryBuffer *getInputMemoryBuffer(MemoryBuffer ** /*memoryBuffers*/)
{
return 0;
}
inline unsigned int getWidth() const
{
return this->m_width;
}
inline unsigned int getHeight() const
{
return this->m_height;
}
#ifdef WITH_CXX_GUARDEDALLOC
MEM_CXX_CLASS_ALLOC_FUNCS("COM:SocketReader")
#endif
};
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