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/*****************************************************************************/
// Copyright 2006-2007 Adobe Systems Incorporated
// All Rights Reserved.
//
// NOTICE: Adobe permits you to use, modify, and distribute this file in
// accordance with the terms of the Adobe license agreement accompanying it.
/*****************************************************************************/
/* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_resample.h#1 $ */
/* $DateTime: 2012/05/30 13:28:51 $ */
/* $Change: 832332 $ */
/* $Author: tknoll $ */
/*****************************************************************************/
#ifndef __dng_resample__
#define __dng_resample__
/*****************************************************************************/
#include "dng_assertions.h"
#include "dng_auto_ptr.h"
#include "dng_classes.h"
#include "dng_memory.h"
#include "dng_point.h"
#include "dng_types.h"
/*****************************************************************************/
class dng_resample_function
{
public:
dng_resample_function ()
{
}
virtual ~dng_resample_function ()
{
}
virtual real64 Extent () const = 0;
virtual real64 Evaluate (real64 x) const = 0;
};
/*****************************************************************************/
class dng_resample_bicubic: public dng_resample_function
{
public:
virtual real64 Extent () const;
virtual real64 Evaluate (real64 x) const;
static const dng_resample_function & Get ();
};
/******************************************************************************/
const uint32 kResampleSubsampleBits = 7;
const uint32 kResampleSubsampleCount = 1 << kResampleSubsampleBits;
const uint32 kResampleSubsampleMask = kResampleSubsampleCount - 1;
/*****************************************************************************/
class dng_resample_coords
{
protected:
int32 fOrigin;
AutoPtr<dng_memory_block> fCoords;
public:
dng_resample_coords ();
virtual ~dng_resample_coords ();
void Initialize (int32 srcOrigin,
int32 dstOrigin,
uint32 srcCount,
uint32 dstCount,
dng_memory_allocator &allocator);
const int32 * Coords (int32 index) const
{
return fCoords->Buffer_int32 () + (index - fOrigin);
}
int32 Pixel (int32 index) const
{
return Coords (index) [0] >> kResampleSubsampleBits;
}
};
/*****************************************************************************/
class dng_resample_weights
{
protected:
uint32 fRadius;
uint32 fWeightStep;
AutoPtr<dng_memory_block> fWeights32;
AutoPtr<dng_memory_block> fWeights16;
public:
dng_resample_weights ();
virtual ~dng_resample_weights ();
void Initialize (real64 scale,
const dng_resample_function &kernel,
dng_memory_allocator &allocator);
uint32 Radius () const
{
return fRadius;
}
uint32 Width () const
{
return fRadius * 2;
}
int32 Offset () const
{
return 1 - (int32) fRadius;
}
uint32 Step () const
{
return fWeightStep;
}
const real32 *Weights32 (uint32 fract) const
{
DNG_ASSERT (fWeights32->Buffer (), "Weights32 is NULL");
return fWeights32->Buffer_real32 () + fract * fWeightStep;
}
const int16 *Weights16 (uint32 fract) const
{
DNG_ASSERT (fWeights16->Buffer (), "Weights16 is NULL");
return fWeights16->Buffer_int16 () + fract * fWeightStep;
}
};
/*****************************************************************************/
const uint32 kResampleSubsampleBits2D = 5;
const uint32 kResampleSubsampleCount2D = 1 << kResampleSubsampleBits2D;
const uint32 kResampleSubsampleMask2D = kResampleSubsampleCount2D - 1;
/*****************************************************************************/
class dng_resample_weights_2d
{
protected:
uint32 fRadius;
uint32 fRowStep;
uint32 fColStep;
AutoPtr<dng_memory_block> fWeights32;
AutoPtr<dng_memory_block> fWeights16;
public:
dng_resample_weights_2d ();
virtual ~dng_resample_weights_2d ();
void Initialize (const dng_resample_function &kernel,
dng_memory_allocator &allocator);
uint32 Radius () const
{
return fRadius;
}
uint32 Width () const
{
return fRadius * 2;
}
int32 Offset () const
{
return 1 - (int32) fRadius;
}
uint32 RowStep () const
{
return fRowStep;
}
uint32 ColStep () const
{
return fColStep;
}
const real32 *Weights32 (dng_point fract) const
{
DNG_ASSERT (fWeights32->Buffer (), "Weights32 is NULL");
const uint32 offset = fract.v * fRowStep + fract.h * fColStep;
return fWeights32->Buffer_real32 () + offset;
}
const int16 *Weights16 (dng_point fract) const
{
DNG_ASSERT (fWeights16->Buffer (), "Weights16 is NULL");
const uint32 offset = fract.v * fRowStep + fract.h * fColStep;
return fWeights16->Buffer_int16 () + offset;
}
};
/*****************************************************************************/
void ResampleImage (dng_host &host,
const dng_image &srcImage,
dng_image &dstImage,
const dng_rect &srcBounds,
const dng_rect &dstBounds,
const dng_resample_function &kernel);
/*****************************************************************************/
#endif
/*****************************************************************************/
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