Program: gdcm
Module: $RCSfile: gdcmFile.cxx,v $
Language: C++
- Date: $Date: 2004/10/22 03:05:41 $
- Version: $Revision: 1.148 $
+ Date: $Date: 2004/11/03 20:52:13 $
+ Version: $Revision: 1.151 $
Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
l'Image). All rights reserved. See Doc/License.txt or
// - it is not defined (i.e. it's value is 0)
// - it's 12, since we will expand the image to 16 bits (see
// PixelConvert::ConvertDecompress12BitsTo16Bits() )
- if ( ( numberBitsAllocated == 0 ) || ( numberBitsAllocated == 12 ) )
+ if ( numberBitsAllocated == 0 || numberBitsAllocated == 12 )
{
numberBitsAllocated = 16;
}
*/
uint8_t* File::GetImageData()
{
- // FIXME (Mathieu)
- // I need to deallocate Pixel_Data before doing any allocation:
-
- if ( Pixel_Data )
- if ( LastAllocatedPixelDataLength != ImageDataSize )
- free(Pixel_Data);
- if ( !Pixel_Data )
- Pixel_Data = new uint8_t[ImageDataSize];
-
- if ( Pixel_Data )
+ if ( ! GetDecompressed() )
+ {
+ // If the decompression failed nothing can be done.
+ return 0;
+ }
+
+ uint8_t* pixelData;
+ if ( HeaderInternal->HasLUT() && PixelConverter->BuildRGBImage() )
{
- LastAllocatedPixelDataLength = ImageDataSize;
+ pixelData = PixelConverter->GetRGB();
+ }
+ else
+ {
+ // When no LUT or LUT conversion fails, return the decompressed
+ pixelData = PixelConverter->GetDecompressed();
+ }
- // we load the pixels (and transform grey level + LUT into RGB)
- GetImageDataIntoVector(Pixel_Data, ImageDataSize);
+// PIXELCONVERT CLEANME
+ // Restore the header in a disk-consistent state
+ // (if user asks twice to get the pixels from disk)
+ if ( PixelRead != -1 ) // File was "read" before
+ {
+ RestoreInitialValues();
+ }
+ if ( PixelConverter->GetRGB() )
+ {
+ // now, it's an RGB image
+ // Lets's write it in the Header
+ std::string spp = "3"; // Samples Per Pixel
+ HeaderInternal->SetEntryByNumber(spp,0x0028,0x0002);
+ std::string rgb = "RGB "; // Photometric Interpretation
+ HeaderInternal->SetEntryByNumber(rgb,0x0028,0x0004);
+ std::string planConfig = "0"; // Planar Configuration
+ HeaderInternal->SetEntryByNumber(planConfig,0x0028,0x0006);
+ PixelRead = 0; // no PixelRaw
+ }
+ else
+ {
+ if ( HeaderInternal->HasLUT() )
+ {
+ // The LUT interpretation failed
+ std::string photometricInterpretation = "MONOCHROME1 ";
+ HeaderInternal->SetEntryByNumber( photometricInterpretation,
+ 0x0028, 0x0004 );
+ PixelRead = 0; // no PixelRaw
+ }
+ else
+ {
+ if ( PixelConverter->IsDecompressedRGB() )
+ {
+ ///////////////////////////////////////////////////
+ // now, it's an RGB image
+ // Lets's write it in the Header
+ // Droping Palette Color out of the Header
+ // has been moved to the Write process.
+ // TODO : move 'values' modification to the write process
+ // : save also (in order to be able to restore)
+ // : 'high bit' -when not equal to 'bits stored' + 1
+ // : 'bits allocated', when it's equal to 12 ?!
+ std::string spp = "3"; // Samples Per Pixel
+ std::string photInt = "RGB "; // Photometric Interpretation
+ std::string planConfig = "0"; // Planar Configuration
+ HeaderInternal->SetEntryByNumber(spp,0x0028,0x0002);
+ HeaderInternal->SetEntryByNumber(photInt,0x0028,0x0004);
+ HeaderInternal->SetEntryByNumber(planConfig,0x0028,0x0006);
+ }
+ PixelRead = 1; // PixelRaw
+ }
+ }
- // We say the value *is* loaded.
- GetHeader()->SetEntryByNumber( GDCM_BINLOADED,
- GetHeader()->GetGrPixel(), GetHeader()->GetNumPixel());
+ // We say the value *is* loaded.
+ GetHeader()->SetEntryByNumber( GDCM_BINLOADED,
+ GetHeader()->GetGrPixel(), GetHeader()->GetNumPixel());
- // Will be 7fe0, 0010 in standard case
- GetHeader()->SetEntryBinAreaByNumber( Pixel_Data,
- GetHeader()->GetGrPixel(), GetHeader()->GetNumPixel());
- }
- PixelRead = 0; // no PixelRaw
+ // Will be 7fe0, 0010 in standard case
+ GetHeader()->SetEntryBinAreaByNumber( pixelData,
+ GetHeader()->GetGrPixel(), GetHeader()->GetNumPixel());
+// END PIXELCONVERT CLEANME
- return Pixel_Data;
+ return pixelData;
}
/**
*/
size_t File::GetImageDataIntoVector (void* destination, size_t maxSize)
{
- GetImageDataIntoVectorRaw (destination, maxSize);
- PixelRead = 0 ; // =0 : no ImageDataRaw
- if ( !HeaderInternal->HasLUT() )
+ if ( ! GetDecompressed() )
{
- return ImageDataSize;
+ // If the decompression failed nothing can be done.
+ return 0;
}
-
- std::ifstream* fp = HeaderInternal->OpenFile();
- if ( PixelConverter->BuildRGBImage() )
+
+ if ( HeaderInternal->HasLUT() && PixelConverter->BuildRGBImage() )
{
+ if ( PixelConverter->GetRGBSize() > maxSize )
+ {
+ dbg.Verbose(0, "File::GetImageDataIntoVector: pixel data bigger"
+ "than caller's expected MaxSize");
+ return 0;
+ }
memmove( destination,
(void*)PixelConverter->GetRGB(),
PixelConverter->GetRGBSize() );
-
- // now, it's an RGB image
- // Lets's write it in the Header
-
- // FIXME : Better use CreateOrReplaceIfExist ?
-
- std::string spp = "3"; // Samples Per Pixel
- HeaderInternal->SetEntryByNumber(spp,0x0028,0x0002);
- std::string rgb = "RGB "; // Photometric Interpretation
- HeaderInternal->SetEntryByNumber(rgb,0x0028,0x0004);
- std::string planConfig = "0"; // Planar Configuration
- HeaderInternal->SetEntryByNumber(planConfig,0x0028,0x0006);
-
+ return PixelConverter->GetRGBSize();
}
- else
- {
- // PixelConverter->BuildRGBImage() failed probably because
- // PixelConverter->GetLUTRGBA() failed:
- // (gdcm-US-ALOKA-16.dcm), contains Segmented xxx Palette Color
- // that are *more* than 65535 long ?!?
- // No idea how to manage such an image !
- // Need to make RGB Pixels (?) from grey Pixels (?!) and Gray Lut (!?!)
- // It seems that *no Dicom Viewer* has any idea :-(
-
- std::string photomInterp = "MONOCHROME1 "; // Photometric Interpretation
- HeaderInternal->SetEntryByNumber(photomInterp,0x0028,0x0004);
- }
- /// \todo Drop Palette Color out of the Header?
- return ImageDataSize;
+ // Either no LUT conversion necessary or LUT conversion failed
+ if ( PixelConverter->GetDecompressedSize() > maxSize )
+ {
+ dbg.Verbose(0, "File::GetImageDataIntoVector: pixel data bigger"
+ "than caller's expected MaxSize");
+ return 0;
+ }
+ memmove( destination,
+ (void*)PixelConverter->GetDecompressed(),
+ PixelConverter->GetDecompressedSize() );
+ return PixelConverter->GetDecompressedSize();
}
/**
*/
uint8_t* File::GetImageDataRaw ()
{
- uint8_t* decompressed = PixelConverter->GetDecompressed();
+ uint8_t* decompressed = GetDecompressed();
if ( ! decompressed )
{
- // The decompressed image migth not be loaded yet:
- std::ifstream* fp = HeaderInternal->OpenFile();
- PixelConverter->ReadAndDecompressPixelData( fp );
- HeaderInternal->CloseFile();
- if ( ! decompressed )
- {
- dbg.Verbose(0, "File::GetImageDataRaw: read/decompress of "
- "pixel data apparently went wrong.");
- return 0;
- }
+ return 0;
}
// PIXELCONVERT CLEANME
return decompressed;
}
-/**
- * \brief Copies at most MaxSize bytes of pixel data to caller's
- * memory space.
- * \warning This function was designed to avoid people that want to build
- * a volume from an image stack to need first to get the image pixels
- * and then move them to the volume area.
- * It's absolutely useless for any VTK user since vtk chooses
- * to invert the lines of an image, that is the last line comes first
- * (for some axis related reasons?). Hence he will have
- * to load the image line by line, starting from the end.
- * VTK users hace to call GetImageData
- * \warning DOES NOT transform the Grey Plane + Palette Color (if any)
- * into a single RGB Pixels Plane
- * the (VTK) user will manage the palettes
- *
- * @param destination Address (in caller's memory space) at which the
- * pixel data should be copied
- * @param maxSize Maximum number of bytes to be copied. When MaxSize
- * is not sufficient to hold the pixel data the copy is not
- * executed (i.e. no partial copy).
- * @return On success, the number of bytes actually copied. Zero on
- * failure e.g. MaxSize is lower than necessary.
- */
-void File::GetImageDataIntoVectorRaw (void* destination, size_t maxSize)
+uint8_t* File::GetDecompressed()
{
- // we save the initial values of the following
- // in order to be able to restore the header in a disk-consistent state
- // (if user asks twice to get the pixels from disk)
-
- if ( PixelRead != -1 ) // File was "read" before
- {
- RestoreInitialValues();
- }
-
- PixelRead = 1 ; // PixelRaw
-
- if ( ImageDataSize > maxSize )
- {
- dbg.Verbose(0, "File::GetImageDataIntoVector: pixel data bigger"
- "than caller's expected MaxSize");
- return;
- }
-
- std::ifstream* fp = HeaderInternal->OpenFile();
- PixelConverter->ReadAndDecompressPixelData( fp );
- HeaderInternal->CloseFile();
- memmove( destination,
- (void*)PixelConverter->GetDecompressed(),
- PixelConverter->GetDecompressedSize() );
-
- if ( ! PixelConverter->IsDecompressedRGB() )
+ uint8_t* decompressed = PixelConverter->GetDecompressed();
+ if ( ! decompressed )
{
- return;
+ // The decompressed image migth not be loaded yet:
+ std::ifstream* fp = HeaderInternal->OpenFile();
+ PixelConverter->ReadAndDecompressPixelData( fp );
+ HeaderInternal->CloseFile();
+ decompressed = PixelConverter->GetDecompressed();
+ if ( ! decompressed )
+ {
+ dbg.Verbose(0, "File::GetDecompressed: read/decompress of "
+ "pixel data apparently went wrong.");
+ return 0;
+ }
}
-///////////////////////////////////////////////////
- // now, it's an RGB image
- // Lets's write it in the Header
-
- // Droping Palette Color out of the Header
- // has been moved to the Write process.
-
- // TODO : move 'values' modification to the write process
- // : save also (in order to be able to restore)
- // : 'high bit' -when not equal to 'bits stored' + 1
- // : 'bits allocated', when it's equal to 12 ?!
-
- std::string spp = "3"; // Samples Per Pixel
- std::string photInt = "RGB "; // Photometric Interpretation
- std::string planConfig = "0"; // Planar Configuration
-
- HeaderInternal->SetEntryByNumber(spp,0x0028,0x0002);
- HeaderInternal->SetEntryByNumber(photInt,0x0028,0x0004);
- HeaderInternal->SetEntryByNumber(planConfig,0x0028,0x0006);
-
- return;
+ return decompressed;
}
/**
std::ofstream fp1(fileName.c_str(), std::ios::out | std::ios::binary );
if (!fp1)
{
- printf("Fail to open (write) file [%s] \n", fileName.c_str());
+ dbg.Verbose(2, "Fail to open (write) file:", fileName.c_str());
return false;
}
fp1.write((char*)Pixel_Data, ImageDataSize);
std::ios::out | std::ios::binary);
if (fp1 == NULL)
{
- printf("Failed to open (write) File [%s] \n", fileName.c_str());
+ dbg.Verbose(2, "Failed to open (write) File: " , fileName.c_str());
return false;
}
if ( type == ImplicitVR || type == ExplicitVR )
{
// writing Dicom File Preamble
- uint8_t* filePreamble = new uint8_t[128];
+ char filePreamble[128];
memset(filePreamble, 0, 128);
- fp1->write((char*)filePreamble, 128);
+ fp1->write(filePreamble, 128);
fp1->write("DICM", 4);
-
- delete[] filePreamble;
}
// --------------------------------------------------------------
HeaderInternal->SetEntryByNumber(columns, 0x0028, 0x0011);
}
// ----------------- End of Special Patch ----------------
-
fp1->close ();
return true;
git://git.creatis.insa-lyon.fr / gdcm.git / blobdiff