Program: gdcm
Module: $RCSfile: gdcmPixelReadConvert.cxx,v $
Language: C++
- Date: $Date: 2005/05/21 18:43:53 $
- Version: $Revision: 1.56 $
+ Date: $Date: 2005/06/14 13:56:41 $
+ Version: $Revision: 1.65 $
Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
l'Image). All rights reserved. See Doc/License.txt or
=========================================================================*/
+#include "gdcmPixelReadConvert.h"
#include "gdcmDebug.h"
#include "gdcmFile.h"
#include "gdcmGlobal.h"
#include "gdcmTS.h"
-#include "gdcmPixelReadConvert.h"
#include "gdcmDocEntry.h"
#include "gdcmRLEFramesInfo.h"
#include "gdcmJPEGFragmentsInfo.h"
namespace gdcm
{
-extern bool ReadMPEGFile (std::ifstream *fp, void *image_buffer);
+//bool ReadMPEGFile (std::ifstream *fp, void *image_buffer, size_t lenght);
+bool gdcm_read_JPEG2000_file (void* raw,
+ char *inputdata, size_t inputlength);
//-----------------------------------------------------------------------------
#define str2num(str, typeNum) *((typeNum *)(str))
{
//gdcmWarningMacro( "Sorry, MPEG not yet taken into account" );
//return false;
- ReadMPEGFile(fp, Raw); // fp has already been seek to start of mpeg
+// ReadMPEGFile(fp, Raw, PixelDataLength); // fp has already been seek to start of mpeg
return true;
}
else
}
/**
- * \brief Build the RGB image from the Raw imagage and the LUTs.
+ * \brief Build the RGB image from the Raw image and the LUTs.
*/
bool PixelReadConvert::BuildRGBImage()
{
// Build RGB Pixels
AllocateRGB();
- uint8_t *localRGB = RGB;
- for (size_t i = 0; i < RawSize; ++i )
+
+ int j;
+ if( BitsAllocated <= 8)
{
- int j = Raw[i] * 4;
- *localRGB++ = LutRGBA[j];
- *localRGB++ = LutRGBA[j+1];
- *localRGB++ = LutRGBA[j+2];
- }
+ uint8_t *localRGB = RGB;
+ for (size_t i = 0; i < RawSize; ++i )
+ {
+ j = Raw[i] * 4;
+ *localRGB++ = LutRGBA[j];
+ *localRGB++ = LutRGBA[j+1];
+ *localRGB++ = LutRGBA[j+2];
+ }
+ }
+
+ else // deal with 16 bits pixels and 16 bits Palette color
+ {
+ uint16_t *localRGB = (uint16_t *)RGB;
+ for (size_t i = 0; i < RawSize/2; ++i )
+ {
+ j = ((uint16_t *)Raw)[i] * 4;
+ *localRGB++ = ((uint16_t *)LutRGBA)[j];
+ *localRGB++ = ((uint16_t *)LutRGBA)[j+1];
+ *localRGB++ = ((uint16_t *)LutRGBA)[j+2];
+ }
+ }
+
return true;
}
{
if ( IsJPEG2000 )
{
- gdcmWarningMacro( "Sorry, JPEG2000 not yet taken into account" );
- fp->seekg( JPEGInfo->GetFirstFragment()->GetOffset(), std::ios::beg);
-// if ( ! gdcm_read_JPEG2000_file( fp,Raw ) )
- return false;
+ // FIXME this is really ugly but it seems I have to load the complete
+ // jpeg2000 stream to use jasper:
+ // I don't think we'll ever be able to deal with multiple fragments properly
+
+ unsigned long inputlength = 0;
+ JPEGFragment *jpegfrag = JPEGInfo->GetFirstFragment();
+ while( jpegfrag )
+ {
+ inputlength += jpegfrag->GetLength();
+ jpegfrag = JPEGInfo->GetNextFragment();
+ }
+ gdcmAssertMacro( inputlength != 0);
+ uint8_t *inputdata = new uint8_t[inputlength];
+ char *pinputdata = (char*)inputdata;
+ jpegfrag = JPEGInfo->GetFirstFragment();
+ while( jpegfrag )
+ {
+ fp->seekg( jpegfrag->GetOffset(), std::ios::beg);
+ fp->read(pinputdata, jpegfrag->GetLength());
+ pinputdata += jpegfrag->GetLength();
+ jpegfrag = JPEGInfo->GetNextFragment();
+ }
+ // Warning the inputdata buffer is delete in the function
+ if ( ! gdcm_read_JPEG2000_file( Raw,
+ (char*)inputdata, inputlength ) )
+ {
+ return true;
+ }
}
if ( IsJPEGLS )
{
+ // WARNING : JPEG-LS is NOT the 'classical' Jpeg Lossless :
+ // [JPEG-LS is the basis for new lossless/near-lossless compression
+ // standard for continuous-tone images intended for JPEG2000. The standard
+ // is based on the LOCO-I algorithm (LOw COmplexity LOssless COmpression
+ // for Images) developed at Hewlett-Packard Laboratories]
+ //
+ // see http://datacompression.info/JPEGLS.shtml
+ //
+
gdcmWarningMacro( "Sorry, JPEG-LS not yet taken into account" );
fp->seekg( JPEGInfo->GetFirstFragment()->GetOffset(), std::ios::beg);
// if ( ! gdcm_read_JPEGLS_file( fp,Raw ) )
return false;
}
-
- // else ??
- // Precompute the offset localRaw will be shifted with
- int length = XSize * YSize * SamplesPerPixel;
- int numberBytes = BitsAllocated / 8;
-
- JPEGInfo->DecompressFromFile(fp, Raw, BitsStored, numberBytes, length );
- return true;
+ else
+ {
+ // Precompute the offset localRaw will be shifted with
+ int length = XSize * YSize * SamplesPerPixel;
+ int numberBytes = BitsAllocated / 8;
+
+ JPEGInfo->DecompressFromFile(fp, Raw, BitsStored, numberBytes, length );
+ return true;
+ }
}
/**
|| LutGreenDescriptor == GDCM_UNFOUND
|| LutBlueDescriptor == GDCM_UNFOUND )
{
+ gdcmWarningMacro( "(At least) a LUT Descriptor is missing" );
return;
}
int lengthR; // Red LUT length in Bytes
int debR; // Subscript of the first Lut Value
int nbitsR; // Lut item size (in Bits)
- int nbRead = sscanf( LutRedDescriptor.c_str(),
+ int nbRead; // nb of items in LUT descriptor (must be = 3)
+
+ nbRead = sscanf( LutRedDescriptor.c_str(),
"%d\\%d\\%d",
&lengthR, &debR, &nbitsR );
if( nbRead != 3 )
{
gdcmWarningMacro( "Wrong Red LUT descriptor" );
- }
-
+ }
int lengthG; // Green LUT length in Bytes
int debG; // Subscript of the first Lut Value
int nbitsG; // Lut item size (in Bits)
+
nbRead = sscanf( LutGreenDescriptor.c_str(),
"%d\\%d\\%d",
- &lengthG, &debG, &nbitsG );
+ &lengthG, &debG, &nbitsG );
if( nbRead != 3 )
{
gdcmWarningMacro( "Wrong Green LUT descriptor" );
{
gdcmWarningMacro( "Wrong Blue LUT descriptor" );
}
+
+ gdcmWarningMacro(" lengthR " << lengthR << " debR "
+ << debR << " nbitsR " << nbitsR);
+ gdcmWarningMacro(" lengthG " << lengthG << " debG "
+ << debG << " nbitsG " << nbitsG);
+ gdcmWarningMacro(" lengthB " << lengthB << " debB "
+ << debB << " nbitsB " << nbitsB);
+
+ if ( !lengthR ) // if = 2^16, this shall be 0 see : CP-143
+ lengthR=65536;
+ if( !lengthG ) // if = 2^16, this shall be 0
+ lengthG=65536;
+ if ( !lengthB ) // if = 2^16, this shall be 0
+ lengthB=65536;
////////////////////////////////////////////////////////
+
if ( ( ! LutRedData ) || ( ! LutGreenData ) || ( ! LutBlueData ) )
{
+ gdcmWarningMacro( "(At least) a LUT is missing" );
return;
}
- ////////////////////////////////////////////////
- // forge the 4 * 8 Bits Red/Green/Blue/Alpha LUT
- LutRGBA = new uint8_t[ 1024 ]; // 256 * 4 (R, G, B, Alpha)
- if ( !LutRGBA )
- return;
+ // -------------------------------------------------------------
+
+ if ( BitsAllocated <= 8)
+ {
+ // forge the 4 * 8 Bits Red/Green/Blue/Alpha LUT
+ LutRGBA = new uint8_t[ 1024 ]; // 256 * 4 (R, G, B, Alpha)
+ if ( !LutRGBA )
+ return;
- memset( LutRGBA, 0, 1024 );
+ memset( LutRGBA, 0, 1024 );
- int mult;
- if ( ( nbitsR == 16 ) && ( BitsAllocated == 8 ) )
- {
- // when LUT item size is different than pixel size
- mult = 2; // high byte must be = low byte
- }
- else
- {
- // See PS 3.3-2003 C.11.1.1.2 p 619
- mult = 1;
- }
+ int mult;
+ if ( ( nbitsR == 16 ) && ( BitsAllocated == 8 ) )
+ {
+ // when LUT item size is different than pixel size
+ mult = 2; // high byte must be = low byte
+ }
+ else
+ {
+ // See PS 3.3-2003 C.11.1.1.2 p 619
+ mult = 1;
+ }
- // if we get a black image, let's just remove the '+1'
- // from 'i*mult+1' and check again
- // if it works, we shall have to check the 3 Palettes
- // to see which byte is ==0 (first one, or second one)
- // and fix the code
- // We give up the checking to avoid some (useless ?) overhead
- // (optimistic asumption)
- int i;
- uint8_t *a = LutRGBA + 0;
- for( i=0; i < lengthR; ++i )
- {
- *a = LutRedData[i*mult+1];
- a += 4;
- }
+ // if we get a black image, let's just remove the '+1'
+ // from 'i*mult+1' and check again
+ // if it works, we shall have to check the 3 Palettes
+ // to see which byte is ==0 (first one, or second one)
+ // and fix the code
+ // We give up the checking to avoid some (useless ?) overhead
+ // (optimistic asumption)
+ int i;
+ uint8_t *a;
+
+ //take "Subscript of the first Lut Value" (debR,debG,debB) into account!
+
+ a = LutRGBA + 0 + debR;
+ for( i=0; i < lengthR; ++i )
+ {
+ *a = LutRedData[i*mult+1];
+ a += 4;
+ }
- a = LutRGBA + 1;
- for( i=0; i < lengthG; ++i)
- {
- *a = LutGreenData[i*mult+1];
- a += 4;
- }
+ a = LutRGBA + 1 + debG;
+ for( i=0; i < lengthG; ++i)
+ {
+ *a = LutGreenData[i*mult+1];
+ a += 4;
+ }
- a = LutRGBA + 2;
- for(i=0; i < lengthB; ++i)
- {
- *a = LutBlueData[i*mult+1];
- a += 4;
- }
+ a = LutRGBA + 2 + debB;
+ for(i=0; i < lengthB; ++i)
+ {
+ *a = LutBlueData[i*mult+1];
+ a += 4;
+ }
- a = LutRGBA + 3;
- for(i=0; i < 256; ++i)
+ a = LutRGBA + 3 ;
+ for(i=0; i < 256; ++i)
+ {
+ *a = 1; // Alpha component
+ a += 4;
+ }
+ }
+ else
{
- *a = 1; // Alpha component
- a += 4;
+ // Probabely the same stuff is to be done for 16 Bits Pixels
+ // with 65536 entries LUT ?!?
+ // Still looking for accurate info on the web :-(
+
+ gdcmWarningMacro( "Sorry Palette Color Lookup Tables not yet dealt with"
+ << " for 16 Bits Per Pixel images" );
+
+ // forge the 4 * 16 Bits Red/Green/Blue/Alpha LUT
+
+ LutRGBA = (uint8_t *)new uint16_t[ 65536*4 ]; // 2^16 * 4 (R, G, B, Alpha)
+ if ( !LutRGBA )
+ return;
+ memset( LutRGBA, 0, 65536*4*2 ); // 16 bits = 2 bytes ;-)
+
+ int i;
+ uint16_t *a16;
+
+ //take "Subscript of the first Lut Value" (debR,debG,debB) into account!
+
+ a16 = (uint16_t*)LutRGBA + 0 + debR;
+ for( i=0; i < lengthR; ++i )
+ {
+ *a16 = ((uint16_t*)LutRedData)[i+1];
+ a16 += 4;
+ }
+
+ a16 = (uint16_t*)LutRGBA + 1 + debG;
+ for( i=0; i < lengthG; ++i)
+ {
+ *a16 = ((uint16_t*)LutGreenData)[i+1];
+ a16 += 4;
+ }
+
+ a16 = (uint16_t*)LutRGBA + 2 + debB;
+ for(i=0; i < lengthB; ++i)
+ {
+ *a16 = ((uint16_t*)LutBlueData)[i+1];
+ a16 += 4;
+ }
+
+ a16 = (uint16_t*)LutRGBA + 3 ;
+ for(i=0; i < 65536; ++i)
+ {
+ *a16 = 1; // Alpha component
+ a16 += 4;
+ }
+/*
+ a16=(uint16_t*)LutRGBA;
+ for (int j=0;j<65536;j++)
+ {
+ std::cout << *a16 << " " << *(a16+1) << " "
+ << *(a16+2) << " " << *(a16+3) << std::endl;
+ a16+=4;
+ }
+*/
}
}
uint8_t *c = copyRaw + l+ l;
int32_t R, G, B;
- /// \todo : Replace by the 'well known' integer computation
- /// counterpart. Refer to
+ /// We replaced easy to understand but time consuming floating point
+ /// computations by the 'well known' integer computation counterpart
+ /// Refer to :
/// http://lestourtereaux.free.fr/papers/data/yuvrgb.pdf
- /// for code optimisation.
+ /// for code optimisation.
for ( int i = 0; i < nbFrames; i++ )
{
// - "Planar Configuration" = 0,
// - "Photometric Interpretation" = "PALETTE COLOR".
// Hence gdcm will use the folowing "heuristic" in order to be tolerant
- // towards Dicom-non-conformance files:
+ // towards Dicom-non-conformant files:
// << whatever the "Planar Configuration" value might be, a
// "Photometric Interpretation" set to "PALETTE COLOR" forces
// a LUT intervention >>
* SamplesPerPixel;
if ( HasLUT )
{
- RGBSize = 3 * RawSize;
+ RGBSize = 3 * RawSize; // works for 8 and 16 bits per Pixel
}
else
{
git://git.creatis.insa-lyon.fr / gdcm.git / blobdiff