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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 "gdcmImageReader.h"
#include "gdcmFileMetaInformation.h"
#include "gdcmSystem.h"
#include "gdcmFilename.h"
#include "gdcmByteSwap.h"
#include "gdcmTrace.h"
#include "gdcmTesting.h"
int TestImageRead(const char* filename, bool verbose = false, bool lossydump = false)
{
if( verbose )
std::cerr << "Reading: " << filename << std::endl;
gdcm::ImageReader reader;
reader.SetFileName( filename );
if ( reader.Read() )
{
int res = 0;
const gdcm::Image &img = reader.GetImage();
//std::cerr << "Success to read image from file: " << filename << std::endl;
unsigned long len = img.GetBufferLength();
if ( lossydump )
{
int lossy = img.IsLossy();
std::cout << lossy << "," << filename << std::endl;
}
int reflossy = gdcm::Testing::GetLossyFlagFromFile( filename );
if( reflossy == -1 )
{
std::cerr << "Missing lossy flag for: " << filename << std::endl;
return 1;
}
if( img.IsLossy() != (reflossy > 0 ? true : false) )//vs10 has a stupid bool/int cast warning
{
std::cerr << "Inconsistency for lossy flag for: " << filename << std::endl;
return 1;
}
char* buffer = new char[len];
bool res2 = img.GetBuffer(buffer);
if( !res2 )
{
std::cerr << "res2 failure: " << filename << std::endl;
return 1;
}
// On big Endian system we have byteswapped the buffer (duh!)
// Since the md5sum is byte based there is now way it would detect
// that the file is written in big endian word, so comparing against
// a md5sum computed on LittleEndian would fail. Thus we need to
// byteswap (again!) here:
#ifdef GDCM_WORDS_BIGENDIAN
if( img.GetPixelFormat().GetBitsAllocated() == 16 )
{
assert( !(len % 2) );
// gdcm-US-ALOKA is a 16 bits image with PALETTE
//assert( img.GetPhotometricInterpretation() == gdcm::PhotometricInterpretation::MONOCHROME1
// || img.GetPhotometricInterpretation() == gdcm::PhotometricInterpretation::MONOCHROME2 );
gdcm::ByteSwap<unsigned short>::SwapRangeFromSwapCodeIntoSystem(
(unsigned short*)buffer, gdcm::SwapCode::LittleEndian, len/2);
}
#endif
const char *ref = gdcm::Testing::GetMD5FromFile(filename);
char digest[33];
gdcm::Testing::ComputeMD5(buffer, len, digest);
if( verbose )
{
std::cout << "ref=" << ref << std::endl;
std::cout << "md5=" << digest << std::endl;
}
if( !ref )
{
// new regression image needs a md5 sum
std::cout << "Missing md5 " << digest << " for: " << filename << std::endl;
//assert(0);
res = 1;
}
else if( strcmp(digest, ref) != 0 )
{
std::cerr << "Problem reading image from: " << filename << std::endl;
std::cerr << "Found " << digest << " instead of " << ref << std::endl;
res = 1;
#if 0
std::ofstream debug("/tmp/dump.gray",std::ios::binary);
debug.write(buffer, len);
debug.close();
//assert(0);
#endif
}
delete[] buffer;
return res;
}
const gdcm::FileMetaInformation &header = reader.GetFile().GetHeader();
gdcm::MediaStorage ms = header.GetMediaStorage();
bool isImage = gdcm::MediaStorage::IsImage( ms );
if( isImage )
{
if( reader.GetFile().GetDataSet().FindDataElement( gdcm::Tag(0x7fe0,0x0010) ) )
{
std::cerr << "Failed to read image from file: " << filename << std::endl;
return 1;
}
else
{
std::cerr << "no Pixel Data Element found in the file:" << filename << std::endl;
return 0;
}
}
// else
// well this is not an image, so thankfully we fail to read it
std::cerr << "Could not read image(" << filename << "), since file is a: " << ms << std::endl;
//assert( ms != gdcm::MediaStorage::MS_END );
return 0;
}
int TestImageReader(int argc, char *argv[])
{
if( argc == 2 )
{
const char *filename = argv[1];
return TestImageRead(filename, true);
}
// else
// First of get rid of warning/debug message
gdcm::Trace::DebugOff();
gdcm::Trace::WarningOff();
gdcm::Trace::ErrorOff();
int r = 0, i = 0;
const char *filename;
const char * const *filenames = gdcm::Testing::GetFileNames();
while( (filename = filenames[i]) )
{
r += TestImageRead( filename);
//r += TestImageRead( filename, false, true );
++i;
}
return r;
}
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