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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 "gdcmPVRGCodec.h"
#include "gdcmTransferSyntax.h"
#include "gdcmDataElement.h"
#include "gdcmFilename.h"
#include "gdcmSystem.h"
#include "gdcmSequenceOfFragments.h"
#include "gdcmPNMCodec.h"
#include "gdcmByteSwap.txx"
namespace gdcm
{
/*
http://groups.google.com/group/comp.compression/browse_thread/thread/e2e20d85a436cfa5
*/
PVRGCodec::PVRGCodec()
{
NeedByteSwap = true;
}
PVRGCodec::~PVRGCodec()
{
}
bool PVRGCodec::CanDecode(TransferSyntax const &ts) const
{
#ifndef GDCM_USE_PVRG
(void)ts;
return false;
#else
return ts == TransferSyntax::JPEGBaselineProcess1
|| ts == TransferSyntax::JPEGExtendedProcess2_4
|| ts == TransferSyntax::JPEGExtendedProcess3_5
|| ts == TransferSyntax::JPEGSpectralSelectionProcess6_8
|| ts == TransferSyntax::JPEGFullProgressionProcess10_12
|| ts == TransferSyntax::JPEGLosslessProcess14
|| ts == TransferSyntax::JPEGLosslessProcess14_1;
#endif
}
bool PVRGCodec::CanCode(TransferSyntax const &) const
{
return false;
}
/* PVRG command line is a bit tricky to use:
*
* ./bin/pvrg-jpeg -d -s jpeg.jpg -ci 0 out.raw
*
* means decompress input file: jpeg.jpg into out.raw
* warning the -ci is important otherwise JFIF is assumed
* and comp # is assumed to be 1...
* -u reduce verbosity
*/
bool PVRGCodec::Decode(DataElement const &in, DataElement &out)
{
#ifndef GDCM_USE_PVRG
(void)in;
(void)out;
return false;
#else
// First thing create a jpegls file from the fragment:
const SequenceOfFragments *sf = in.GetSequenceOfFragments();
if(!sf)
{
gdcmDebugMacro( "Could not find SequenceOfFragments" );
return false;
}
#ifdef GDCM_USE_SYSTEM_PVRG
std::string pvrg_command = GDCM_PVRG_JPEG_EXECUTABLE;
#else
Filename fn( System::GetCurrentProcessFileName() );
std::string executable_path = fn.GetPath();
std::string pvrg_command = executable_path + "/gdcmjpeg";
#endif
if( !System::FileExists( pvrg_command.c_str() ) )
{
gdcmErrorMacro( "Could not find: " << pvrg_command );
return false;
}
// http://msdn.microsoft.com/en-us/library/hs3e7355.aspx
// -> check if tempnam needs the 'free'
char *input = tempnam(0, "gdcminpvrg");
char *output = tempnam(0, "gdcmoutpvrg");
if( !input || !output )
{
//free(input);
//free(output);
return false;
}
std::ofstream outfile(input, std::ios::binary);
sf->WriteBuffer(outfile);
outfile.close(); // flush !
// -u -> set Notify to 0 (less verbose)
//pvrg_command += " -ci 0 -d -u ";
pvrg_command += " -d -u ";
// ./bin/pvrgjpeg -d -s jpeg.jpg -ci 0 out.raw
pvrg_command += "-s ";
pvrg_command += input;
//pvrg_command += " -ci 0 ";
//pvrg_command += output;
//std::cerr << pvrg_command << std::endl;
gdcmDebugMacro( pvrg_command );
int ret = system(pvrg_command.c_str());
//std::cerr << "system: " << ret << std::endl;
if( ret )
{
gdcmErrorMacro( "Looks like pvrg gave up in input, with ret value: " << ret );
return false;
}
int numoutfile = GetPixelFormat().GetSamplesPerPixel();
std::string wholebuf;
for( int file = 0; file < numoutfile; ++file )
{
std::ostringstream os;
os << input;
os << ".";
os << file; // dont ask
const std::string altfile = os.str();
const size_t len = System::FileSize(altfile.c_str());
if( !len )
{
gdcmDebugMacro( "Output file was really empty: " << altfile );
return false;
}
const char *rawfile = altfile.c_str();
gdcmDebugMacro( "Processing: " << rawfile );
std::ifstream is(rawfile, std::ios::binary);
std::string buf;
buf.resize( len );
is.read(&buf[0], len);
out.SetTag( Tag(0x7fe0,0x0010) );
if ( PF.GetBitsAllocated() == 16 )
{
ByteSwap<uint16_t>::SwapRangeFromSwapCodeIntoSystem((uint16_t*)
&buf[0],
#ifdef GDCM_WORDS_BIGENDIAN
SwapCode::LittleEndian,
#else
SwapCode::BigEndian,
#endif
len/2);
}
wholebuf.insert( wholebuf.end(), buf.begin(), buf.end() );
if( !System::RemoveFile(rawfile) )
{
gdcmErrorMacro( "Could not delete output: " << rawfile);
}
}
out.SetByteValue( &wholebuf[0], (uint32_t)wholebuf.size() );
if( numoutfile == 3 )
{
this->PlanarConfiguration = 1;
}
if( !System::RemoveFile(input) )
{
gdcmErrorMacro( "Could not delete input: " << input );
}
free(input);
free(output);
// FIXME:
LossyFlag = true;
//return ImageCodec::Decode(in,out);
return true;
#endif
}
void PVRGCodec::SetLossyFlag( bool l )
{
LossyFlag = l;
}
// Compress into JPEG
bool PVRGCodec::Code(DataElement const &in, DataElement &out)
{
#ifndef GDCM_USE_PVRG
(void)in;
(void)out;
return false;
#else
(void)in;
(void)out;
/* Do I really want to produce JPEG by PVRG ? Shouldn't IJG handle all cases nicely ? */
return false;
#endif
}
ImageCodec * PVRGCodec::Clone() const
{
return NULL;
}
} // end namespace gdcm
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