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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#include "itkBMPImageIO.h"
#include "itkImageFileReader.h"
#include "itkImageRegionConstIterator.h"
#include "itkTestingMacros.h"
#include <fstream>
#define SPECIFIC_IMAGEIO_MODULE_TEST
/* This test checks that a RLE-compressed bitmap and an
* uncompressed bitmap representing the same grayscale image
* contains the same data.
*/
int itkBMPImageIOTest5( int argc, char* argv[] )
{
if( argc != 3 )
{
std::cerr << "Usage: " << argv[0]
<< " compressedImage"
<< " uncompressedImage"
<< std::endl;
return EXIT_FAILURE;
}
const unsigned int Dimension = 2;
typedef unsigned char PixelType;
typedef itk::Image< PixelType, Dimension > ImageType;
typedef itk::ImageFileReader< ImageType > ReaderType;
typedef itk::ImageRegionConstIterator< ImageType > IteratorType;
ReaderType::Pointer compressedImageReader = ReaderType::New();
itk::BMPImageIO::Pointer compressedImageIO = itk::BMPImageIO::New();
EXERCISE_BASIC_OBJECT_METHODS( compressedImageIO, BMPImageIO, ImageIOBase );
compressedImageReader->SetImageIO( compressedImageIO );
compressedImageReader->SetFileName( argv[1] );
compressedImageIO->SetFileName( argv[1] );
ReaderType::Pointer uncompressedImageReader = ReaderType::New();
itk::BMPImageIO::Pointer uncompressedImageIO = itk::BMPImageIO::New();
EXERCISE_BASIC_OBJECT_METHODS( uncompressedImageIO, BMPImageIO, ImageIOBase );
uncompressedImageReader->SetImageIO( uncompressedImageIO );
uncompressedImageReader->SetFileName( argv[2] );
uncompressedImageIO->SetFileName( argv[2] );
if( compressedImageIO->CanReadFile( "" ) )
{
std::cerr << "Test failed!" << std::endl;
std::cout << "No filename specified." << std::endl;
std::cout << "CanReadFile: "
<< "Expected false but got true" << std::endl;
return EXIT_FAILURE;
}
if( !compressedImageIO->CanReadFile( compressedImageIO->GetFileName() ) )
{
std::cerr << "Test failed!" << std::endl;
std::cout << "itk::BMPImageIO cannot read file "
<< uncompressedImageIO->GetFileName() << std::endl;
return EXIT_FAILURE;
}
if( uncompressedImageIO->CanReadFile( "" ) )
{
std::cerr << "Test failed!" << std::endl;
std::cout << "No filename specified." << std::endl;
std::cout << "CanReadFile: "
<< "Expected false but got true" << std::endl;
return EXIT_FAILURE;
}
if( !uncompressedImageIO->CanReadFile( uncompressedImageIO->GetFileName() ) )
{
std::cerr << "Test failed!" << std::endl;
std::cout << "itk::BMPImageIO cannot read file "
<< uncompressedImageIO->GetFileName() << std::endl;
return EXIT_FAILURE;
}
TRY_EXPECT_NO_EXCEPTION( compressedImageReader->Update() );
TRY_EXPECT_NO_EXCEPTION( uncompressedImageReader->Update() );
if( compressedImageIO->GetBMPCompression() != 1 )
{
std::cout << "Test failed!" << std::endl;
std::cout << "Expecting a RLE-compressed image, got an uncompressed one ("
<< argv[1] << ")." << std::endl;
return EXIT_FAILURE;
}
if( uncompressedImageIO->GetBMPCompression() != 0 )
{
std::cout << "Test failed!" << std::endl;
std::cout << "Expecting an uncompressed image, got an RLE-compressed one ("
<< argv[2] << ")." << std::endl;
return EXIT_FAILURE;
}
ImageType::RegionType compressedImageRegion =
compressedImageReader->GetOutput()->GetLargestPossibleRegion();
ImageType::RegionType uncompressedImageRegion =
uncompressedImageReader->GetOutput()->GetLargestPossibleRegion();
if( compressedImageRegion != uncompressedImageRegion )
{
std::cout << "Test failed!" << std::endl;
std::cout << "The images must have the same size." << std::endl;
return EXIT_FAILURE;
}
IteratorType it1( compressedImageReader->GetOutput(),
compressedImageRegion );
IteratorType it2( uncompressedImageReader->GetOutput(),
uncompressedImageRegion );
it1.GoToBegin();
it2.GoToBegin();
while( !it1.IsAtEnd() )
{
if( it1.Value() != it2.Value() )
{
std::cout << "Test failed!" << std::endl;
std::cout << "An image stored in a lower-left bitmap is different than \
the same image stored in a upper-left bitmap." << std::endl;
return EXIT_FAILURE;
}
++it1;
++it2;
}
std::cout << "Test finished" << std::endl;
return EXIT_SUCCESS;
}
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