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/*=========================================================================
Program: GDCM (Grassroots DICOM). A DICOM library
Copyright (c) 2006-2011 Mathieu Malaterre
All rights reserved.
See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "gdcmImageChangePlanarConfiguration.h"
#include "gdcmSequenceOfFragments.h"
#include "gdcmSequenceOfItems.h"
#include "gdcmFragment.h"
namespace gdcm
{
/*
* C.7.6.3.1.3 Planar Configuration
* Note: Planar Configuration (0028,0006) is not meaningful when a compression transfer syntax is
* used that involves reorganization of sample components in the compressed bit stream. In such
* cases, since the Attribute is required to be sent, then an appropriate value to use may be
* specified in the description of the Transfer Syntax in PS 3.5, though in all likelihood the value of
* the Attribute will be ignored by the receiving implementation.
*/
bool ImageChangePlanarConfiguration::Change()
{
if( PlanarConfiguration != 0 && PlanarConfiguration != 1 ) return false; // seriously
Output = Input;
if( Input->GetPixelFormat().GetSamplesPerPixel() != 3 )
{
return true;
}
assert( Input->GetPhotometricInterpretation() == PhotometricInterpretation::YBR_FULL
|| Input->GetPhotometricInterpretation() == PhotometricInterpretation::YBR_FULL_422
|| Input->GetPhotometricInterpretation() == PhotometricInterpretation::YBR_RCT
|| Input->GetPhotometricInterpretation() == PhotometricInterpretation::RGB );
if( Input->GetPlanarConfiguration() == PlanarConfiguration )
{
return true;
}
const Bitmap &image = *Input;
const unsigned int *dims = image.GetDimensions();
unsigned long len = image.GetBufferLength();
char *p = new char[len];
image.GetBuffer( p );
assert( len % 3 == 0 );
const size_t ps = Input->GetPixelFormat().GetPixelSize();
const size_t framesize = dims[0] * dims[1] * ps;
assert( framesize * dims[2] == len );
char *copy = new char[len];
size_t size = framesize / 3;
if( PlanarConfiguration == 0 )
{
for(unsigned int z = 0; z < dims[2]; ++z)
{
const char *frame = p + z * framesize;
const char *r = frame + 0;
const char *g = frame + size;
const char *b = frame + size + size;
char *framecopy = copy + z * framesize;
ImageChangePlanarConfiguration::RGBPlanesToRGBPixels(framecopy, r, g, b, size);
}
}
else // User requested to do PlanarConfiguration == 1
{
assert( PlanarConfiguration == 1 );
for(unsigned int z = 0; z < dims[2]; ++z)
{
const char *frame = p + z * framesize;
char *framecopy = copy + z * framesize;
char *r = framecopy + 0;
char *g = framecopy + size;
char *b = framecopy + size + size;
ImageChangePlanarConfiguration::RGBPixelsToRGBPlanes(r, g, b, frame, size);
}
}
delete[] p;
DataElement &de = Output->GetDataElement();
de.SetByteValue( copy, (uint32_t)len );
delete[] copy;
Output->SetPlanarConfiguration( PlanarConfiguration );
if( Input->GetTransferSyntax().IsImplicit() )
{
assert( Output->GetTransferSyntax().IsImplicit() );
}
else if( Input->GetTransferSyntax() == TransferSyntax::ExplicitVRBigEndian )
{
Output->SetTransferSyntax( TransferSyntax::ExplicitVRBigEndian );
}
else
{
Output->SetTransferSyntax( TransferSyntax::ExplicitVRLittleEndian );
}
//assert( Output->GetTransferSyntax().IsRaw() );
assert( Output->GetPhotometricInterpretation() == Input->GetPhotometricInterpretation() );
return true;
}
} // end namespace gdcm
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