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/*
*
* Copyright (C) 1994-2005, OFFIS
*
* This software and supporting documentation were developed by
*
* Kuratorium OFFIS e.V.
* Healthcare Information and Communication Systems
* Escherweg 2
* D-26121 Oldenburg, Germany
*
* THIS SOFTWARE IS MADE AVAILABLE, AS IS, AND OFFIS MAKES NO WARRANTY
* REGARDING THE SOFTWARE, ITS PERFORMANCE, ITS MERCHANTABILITY OR
* FITNESS FOR ANY PARTICULAR USE, FREEDOM FROM ANY COMPUTER DISEASES OR
* ITS CONFORMITY TO ANY SPECIFICATION. THE ENTIRE RISK AS TO QUALITY AND
* PERFORMANCE OF THE SOFTWARE IS WITH THE USER.
*
* Module: dcmdata
*
* Author: Gerd Ehlers, Andreas Barth
*
* Purpose: Implementation of class DcmPixelSequence
*
* Last Update: $Author: meichel $
* Update Date: $Date: 2005/12/08 15:41:26 $
* CVS/RCS Revision: $Revision: 1.36 $
* Status: $State: Exp $
*
* CVS/RCS Log at end of file
*
*/
#include "dcmtk/config/osconfig.h" /* make sure OS specific configuration is included first */
#define INCLUDE_CSTDLIB
#define INCLUDE_CSTDIO
#include "dcmtk/ofstd/ofstdinc.h"
#include "dcmtk/ofstd/ofstream.h"
#include "dcmtk/dcmdata/dcpixseq.h"
#include "dcmtk/dcmdata/dcpxitem.h"
#include "dcmtk/dcmdata/dcitem.h"
#include "dcmtk/dcmdata/dcvr.h"
#include "dcmtk/dcmdata/dcdebug.h"
#include "dcmtk/dcmdata/dcdeftag.h"
// ********************************
DcmPixelSequence::DcmPixelSequence(const DcmTag &tag,
const Uint32 len)
: DcmSequenceOfItems(tag, len),
Xfer(EXS_Unknown)
{
Tag.setVR(EVR_OB);
Length = DCM_UndefinedLength; // pixel sequences always use undefined length
}
DcmPixelSequence::DcmPixelSequence(const DcmPixelSequence &old)
: DcmSequenceOfItems(old),
Xfer(old.Xfer)
{
/* everything gets handled in DcmSequenceOfItems constructor */
}
DcmPixelSequence::~DcmPixelSequence()
{
}
DcmPixelSequence &DcmPixelSequence::operator=(const DcmPixelSequence &obj)
{
DcmSequenceOfItems::operator=(obj);
Xfer = obj.Xfer;
return *this;
}
// ********************************
void DcmPixelSequence::print(ostream &out,
const size_t flags,
const int level,
const char *pixelFileName,
size_t *pixelCounter)
{
/* print pixel sequence start line */
if (flags & DCMTypes::PF_showTreeStructure)
{
/* empty text */
printInfoLine(out, flags, level);
/* print pixel sequence content */
if (!itemList->empty())
{
/* reset internal flags */
const size_t newFlags = flags & ~DCMTypes::PF_lastEntry;
/* print pixel items */
DcmObject *dO;
itemList->seek(ELP_first);
do {
dO = itemList->get();
dO->print(out, newFlags, level + 1, pixelFileName, pixelCounter);
} while (itemList->seek(ELP_next));
}
} else {
OFOStringStream oss;
oss << "(PixelSequence ";
if (Length != DCM_UndefinedLength)
oss << "with explicit length ";
oss << "#=" << card() << ")" << OFStringStream_ends;
OFSTRINGSTREAM_GETSTR(oss, tmpString)
printInfoLine(out, flags, level, tmpString);
OFSTRINGSTREAM_FREESTR(tmpString)
/* print pixel sequence content */
if (!itemList->empty())
{
DcmObject *dO;
itemList->seek(ELP_first);
do {
dO = itemList->get();
dO->print(out, flags, level + 1, pixelFileName, pixelCounter);
} while (itemList->seek(ELP_next));
}
/* print pixel sequence end line */
DcmTag delimItemTag(DCM_SequenceDelimitationItem);
if (Length == DCM_UndefinedLength)
printInfoLine(out, flags, level, "(SequenceDelimitationItem)", &delimItemTag);
else
printInfoLine(out, flags, level, "(SequenceDelimitationItem for re-encod.)", &delimItemTag);
}
}
// ********************************
Uint32 DcmPixelSequence::calcElementLength(const E_TransferSyntax xfer,
const E_EncodingType enctype)
{
// add 8 bytes for Sequence Delimitation Tag which always exists for Pixel Sequences
return DcmElement::calcElementLength(xfer, enctype) + 8;
}
// ********************************
OFCondition DcmPixelSequence::makeSubObject(DcmObject *&subObject,
const DcmTag &newTag,
const Uint32 newLength)
{
OFCondition l_error = EC_Normal;
DcmObject *newObject = NULL;
switch (newTag.getEVR())
{
case EVR_na:
if (newTag.getXTag() == DCM_Item)
newObject = new DcmPixelItem(newTag, newLength);
else if (newTag.getXTag() == DCM_SequenceDelimitationItem)
l_error = EC_SequEnd;
else if (newTag.getXTag() == DCM_ItemDelimitationItem)
l_error = EC_ItemEnd;
else
l_error = EC_InvalidTag;
break;
default:
newObject = new DcmPixelItem(newTag, newLength);
l_error = EC_CorruptedData;
break;
}
subObject = newObject;
return l_error;
}
// ********************************
OFCondition DcmPixelSequence::insert(DcmPixelItem *item,
unsigned long where)
{
errorFlag = EC_Normal;
if (item != NULL)
{
itemList->seek_to(where);
itemList->insert(item);
DCM_dcmdataCDebug(3, where< itemList->card(), ("DcmPixelSequence::insert() item at position %d inserted", where));
DCM_dcmdataCDebug(3, where>=itemList->card(), ("DcmPixelSequence::insert() item at last position inserted"));
} else
errorFlag = EC_IllegalCall;
return errorFlag;
}
// ********************************
OFCondition DcmPixelSequence::getItem(DcmPixelItem *&item,
const unsigned long num)
{
errorFlag = EC_Normal;
item = OFstatic_cast(DcmPixelItem*, itemList->seek_to(num)); // read item from list
if (item == NULL)
errorFlag = EC_IllegalCall;
return errorFlag;
}
// ********************************
OFCondition DcmPixelSequence::remove(DcmPixelItem *&item,
const unsigned long num)
{
errorFlag = EC_Normal;
item = OFstatic_cast(DcmPixelItem*, itemList->seek_to(num)); // read item from list
if (item != NULL)
itemList->remove();
else
errorFlag = EC_IllegalCall;
return errorFlag;
}
// ********************************
OFCondition DcmPixelSequence::remove(DcmPixelItem *item)
{
errorFlag = EC_IllegalCall;
if (!itemList->empty() && item != NULL)
{
DcmObject *dO;
itemList->seek(ELP_first);
do {
dO = itemList->get();
if (dO == item)
{
itemList->remove(); // remove element from list, but do no delete it
errorFlag = EC_Normal;
break;
}
} while (itemList->seek(ELP_next));
}
return errorFlag;
}
// ********************************
OFCondition DcmPixelSequence::changeXfer(const E_TransferSyntax newXfer)
{
if (Xfer == EXS_Unknown || canWriteXfer(newXfer, Xfer))
{
Xfer = newXfer;
return EC_Normal;
} else
return EC_IllegalCall;
}
// ********************************
OFBool DcmPixelSequence::canWriteXfer(const E_TransferSyntax newXfer,
const E_TransferSyntax oldXfer)
{
DcmXfer newXferSyn(newXfer);
return newXferSyn.isEncapsulated() && newXfer == oldXfer && oldXfer == Xfer;
}
// ********************************
OFCondition DcmPixelSequence::read(DcmInputStream &inStream,
const E_TransferSyntax ixfer,
const E_GrpLenEncoding glenc,
const Uint32 maxReadLength)
{
OFCondition l_error = changeXfer(ixfer);
if (l_error.good())
return DcmSequenceOfItems::read(inStream, ixfer, glenc, maxReadLength);
return l_error;
}
// ********************************
OFCondition DcmPixelSequence::write(DcmOutputStream &outStream,
const E_TransferSyntax oxfer,
const E_EncodingType /*enctype*/)
{
OFCondition l_error = changeXfer(oxfer);
if (l_error.good())
return DcmSequenceOfItems::write(outStream, oxfer, EET_UndefinedLength);
return l_error;
}
// ********************************
OFCondition DcmPixelSequence::writeSignatureFormat(DcmOutputStream &outStream,
const E_TransferSyntax oxfer,
const E_EncodingType /*enctype*/)
{
OFCondition l_error = changeXfer(oxfer);
if (l_error.good())
return DcmSequenceOfItems::writeSignatureFormat(outStream, oxfer, EET_UndefinedLength);
return l_error;
}
OFCondition DcmPixelSequence::storeCompressedFrame(DcmOffsetList &offsetList,
Uint8 *compressedData,
Uint32 compressedLen,
Uint32 fragmentSize)
{
if (compressedData == NULL)
return EC_IllegalCall;
OFCondition result = EC_Normal;
if (fragmentSize >= 0x400000)
fragmentSize = 0; // prevent overflow
else
fragmentSize <<= 10; // unit is kbytes
if (fragmentSize == 0)
fragmentSize = compressedLen;
Uint32 offset = 0;
Uint32 currentSize = 0;
Uint32 numFragments = 0;
DcmPixelItem *fragment = NULL;
while ((offset < compressedLen) && (result.good()))
{
fragment = new DcmPixelItem(DcmTag(DCM_Item,EVR_OB));
if (fragment == NULL)
result = EC_MemoryExhausted;
else
{
insert(fragment);
numFragments++;
currentSize = fragmentSize;
if (offset + currentSize > compressedLen)
currentSize = compressedLen - offset;
result = fragment->putUint8Array(compressedData+offset, currentSize);
if (result.good())
offset += currentSize;
}
}
currentSize = offset + (numFragments << 3); // 8 bytes extra for each item header
offsetList.push_back(currentSize);
return result;
}
/*
** CVS/RCS Log:
** $Log: dcpixseq.cc,v $
** Revision 1.36 2005/12/08 15:41:26 meichel
** Changed include path schema for all DCMTK header files
**
** Revision 1.35 2005/11/28 15:53:13 meichel
** Renamed macros in dcdebug.h
**
** Revision 1.34 2005/05/27 09:45:38 meichel
** Fixed bug that caused incorrect sequence and item lengths to be computed for
** compressed pixel data embedded in a sequence such as the IconImageSequence.
**
** Revision 1.33 2004/02/04 16:41:37 joergr
** Adapted type casts to new-style typecast operators defined in ofcast.h.
** Removed acknowledgements with e-mail addresses from CVS log.
**
** Revision 1.32 2003/03/21 13:08:04 meichel
** Minor code purifications for warnings reported by MSVC in Level 4
**
** Revision 1.31 2003/01/06 09:29:49 joergr
** Performed minor text corrections to get a more consistent print() output.
**
** Revision 1.30 2002/12/06 13:16:58 joergr
** Enhanced "print()" function by re-working the implementation and replacing
** the boolean "showFullData" parameter by a more general integer flag.
** Made source code formatting more consistent with other modules/files.
**
** Revision 1.29 2002/11/27 12:06:50 meichel
** Adapted module dcmdata to use of new header file ofstdinc.h
**
** Revision 1.28 2002/08/27 16:55:55 meichel
** Initial release of new DICOM I/O stream classes that add support for stream
** compression (deflated little endian explicit VR transfer syntax)
**
** Revision 1.27 2002/05/24 14:51:50 meichel
** Moved helper methods that are useful for different compression techniques
** from module dcmjpeg to module dcmdata
**
** Revision 1.26 2002/04/16 13:43:19 joergr
** Added configurable support for C++ ANSI standard includes (e.g. streams).
**
** Revision 1.25 2001/09/25 17:19:52 meichel
** Adapted dcmdata to class OFCondition
**
** Revision 1.24 2001/06/01 15:49:07 meichel
** Updated copyright header
**
** Revision 1.23 2000/11/07 16:56:22 meichel
** Initial release of dcmsign module for DICOM Digital Signatures
**
** Revision 1.22 2000/03/08 16:26:39 meichel
** Updated copyright header.
**
** Revision 1.21 2000/03/06 18:13:44 joergr
** Local variable hided member variable (reported by Sun CC 4.2).
**
** Revision 1.20 2000/03/03 15:02:10 joergr
** Corrected bug related to padding of file and item size.
**
** Revision 1.19 2000/02/23 15:11:58 meichel
** Corrected macro for Borland C++ Builder 4 workaround.
**
** Revision 1.18 2000/02/10 10:52:21 joergr
** Added new feature to dcmdump (enhanced print method of dcmdata): write
** pixel data/item value fields to raw files.
**
** Revision 1.17 2000/02/02 14:32:53 joergr
** Replaced 'delete' statements by 'delete[]' for objects created with 'new[]'.
**
** Revision 1.16 2000/02/01 10:12:09 meichel
** Avoiding to include <stdlib.h> as extern "C" on Borland C++ Builder 4,
** workaround for bug in compiler header files.
**
** Revision 1.15 1999/03/31 09:25:36 meichel
** Updated copyright header in module dcmdata
**
** Revision 1.14 1998/11/12 16:48:18 meichel
** Implemented operator= for all classes derived from DcmObject.
**
** Revision 1.13 1998/07/15 15:52:05 joergr
** Removed several compiler warnings reported by gcc 2.8.1 with
** additional options, e.g. missing copy constructors and assignment
** operators, initialization of member variables in the body of a
** constructor instead of the member initialization list, hiding of
** methods by use of identical names, uninitialized member variables,
** missing const declaration of char pointers. Replaced tabs by spaces.
**
** Revision 1.12 1997/07/21 08:19:33 andreas
** - New environment for encapsulated pixel representations. DcmPixelData
** can contain different representations and uses codecs to convert
** between them. Codecs are derived from the DcmCodec class. New error
** codes are introduced for handling of representations. New internal
** value representation (only for ident()) for PixelData
** - Replace all boolean types (BOOLEAN, CTNBOOLEAN, DICOM_BOOL, BOOL)
** with one unique boolean type OFBool.
**
** Revision 1.11 1997/07/07 07:51:36 andreas
** - Changed type for Tag attribute in DcmObject from prointer to value
** - Enhanced (faster) byte swapping routine. swapIfNecessary moved from
** a method in DcmObject to a general function.
**
** Revision 1.10 1997/07/03 15:10:02 andreas
** - removed debugging functions Bdebug() and Edebug() since
** they write a static array and are not very useful at all.
** Cdebug and Vdebug are merged since they have the same semantics.
** The debugging functions in dcmdata changed their interfaces
** (see dcmdata/include/dcdebug.h)
**
** Revision 1.9 1997/06/06 09:55:30 andreas
** - corrected error: canWriteXfer returns false if the old transfer syntax
** was unknown, which causes several applications to prohibit the writing
** of dataset.
**
** Revision 1.8 1997/05/27 13:49:01 andreas
** - Add method canWriteXfer to class DcmObject and all derived classes.
** This method checks whether it is possible to convert the original
** transfer syntax to an new transfer syntax. The check is used in the
** dcmconv utility to prohibit the change of a compressed transfer
** syntax to a uncompressed.
**
** Revision 1.7 1997/05/26 15:08:15 andreas
** - Corrected typo in write method
**
** Revision 1.6 1997/05/22 16:57:15 andreas
** - Corrected errors for writing of pixel sequences for encapsulated
** transfer syntaxes.
**
** Revision 1.5 1996/08/05 08:46:15 andreas
** new print routine with additional parameters:
** - print into files
** - fix output length for elements
** corrected error in search routine with parameter ESM_fromStackTop
**
** Revision 1.4 1996/01/29 13:38:29 andreas
** - new put method for every VR to put value as a string
** - better and unique print methods
**
** Revision 1.3 1996/01/05 13:27:40 andreas
** - changed to support new streaming facilities
** - unique read/write methods for file and block transfer
** - more cleanups
**
*/
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