-size_t gdcmFile::GetImageDataIntoVectorRaw (void* destination, size_t MaxSize) {
-
- int nb, nbu, highBit, signe;
- std::string str_nbFrames, str_nb, str_nbu, str_highBit, str_signe;
-
- if ( lgrTotale > MaxSize ) {
- dbg.Verbose(0, "gdcmFile::GetImageDataIntoVector: pixel data bigger"
- "than caller's expected MaxSize");
- return (size_t)0;
- }
-
- (void)ReadPixelData(destination);
-
- // Nombre de Bits Alloues pour le stockage d'un Pixel
- str_nb = Header->GetPubEntryByNumber(0x0028,0x0100);
- if (str_nb == GDCM_UNFOUND ) {
- nb = 16;
- } else {
- nb = atoi(str_nb.c_str() );
- }
-
- // Nombre de Bits Utilises
- str_nbu=Header->GetPubEntryByNumber(0x0028,0x0101);
- if (str_nbu == GDCM_UNFOUND ) {
- nbu = nb;
- } else {
- nbu = atoi(str_nbu.c_str() );
- }
-
- // Position du Bit de Poids Fort
- str_highBit=Header->GetPubEntryByNumber(0x0028,0x0102);
- if (str_highBit == GDCM_UNFOUND ) {
- highBit = nb - 1;
- } else {
- highBit = atoi(str_highBit.c_str() );
- }
- // Pixel sign
- // 0 = Unsigned
- // 1 = Signed
- str_signe=Header->GetPubEntryByNumber(0x0028,0x0103);
- if (str_signe == GDCM_UNFOUND ) {
- signe = 0; // default is unsigned
- } else {
- signe = atoi(str_signe.c_str() );
- }
-
- // re arange bytes inside the integer
- if (nb != 8)
- SwapZone(destination, Header->GetSwapCode(), lgrTotale, nb);
-
- // to avoid pb with some xmedcon breakers images
- if (nb==16 && nbu<nb && signe==0) {
- int l = (int)lgrTotale / (nb/8);
- guint16 *deb = (guint16 *)destination;
- for(int i = 0; i<l; i++) {
- if(*deb == 0xffff)
- *deb=0;
- deb++;
- }
- }
-
- // re arange bits inside the bytes
- if (nbu != nb){
- int l = (int)lgrTotale / (nb/8);
- if (nb == 16) {
- guint16 mask = 0xffff;
- mask = mask >> (nb-nbu);
- guint16 *deb = (guint16 *)destination;
- for(int i = 0; i<l; i++) {
- *deb = (*deb >> (nbu-highBit-1)) & mask;
- deb ++;
- }
- } else if (nb == 32 ) {
- guint32 mask = 0xffffffff;
- mask = mask >> (nb-nbu);
- guint32 *deb = (guint32 *)destination;
- for(int i = 0; i<l; i++) {
- *deb = (*deb >> (nbu-highBit-1)) & mask;
- deb ++;
- }
- } else {
- dbg.Verbose(0, "gdcmFile::GetImageDataIntoVector: wierd image");
- return (size_t)0;
- }
- }
-
-// Just to 'see' what was actually read on disk :-(
-// Some troubles expected
-// FILE * f2;
-// f2 = fopen("SpuriousFile.raw","wb");
-// fwrite(destination,lgrTotale,1,f2);
-// fclose(f2);
-
- // Deal with the color
- // -------------------
-
- std::string str_PhotometricInterpretation =
- Header->GetPubEntryByNumber(0x0028,0x0004);
-
- if ( (str_PhotometricInterpretation == "MONOCHROME1 ")
- || (str_PhotometricInterpretation == "MONOCHROME2 ") ) {
- return lgrTotale;
- }
-
- // Planar configuration = 0 : Pixels are already RGB
- // Planar configuration = 1 : 3 planes : R, G, B
- // Planar configuration = 2 : 1 gray Plane + 3 LUT
-
- // Well ... supposed to be !
- // See US-PAL-8-10x-echo.dcm: PlanarConfiguration=0,
- // PhotometricInterpretation=PALETTE COLOR
- // and heuristic has to be found :-(
-
- int planConf=Header->GetPlanarConfiguration(); // 0028,0006
-
- // Whatever Planar Configuration is,
- // "PALETTE COLOR " implies that we deal with the palette.
- if (str_PhotometricInterpretation == "PALETTE COLOR ")
- planConf=2;
-
- switch (planConf) {
- case 0:
- // Pixels are already RGB
- break;
-
- case 1:
-
- {
- if (str_PhotometricInterpretation == "YBR_FULL") {
-
- // Warning : YBR_FULL_422 acts as RGB
- // : we need to make RGB Pixels from Planes Y,cB,cR
- // see http://lestourtereaux.free.fr/papers/data/yuvrgb.pdf
- // for code optimisation
-
- // to see the tricks about YBR_FULL, YBR_FULL_422,
- // YBR_PARTIAL_422, YBR_ICT, YBR_RCT have a look at :
- // ftp://medical.nema.org/medical/dicom/final/sup61_ft.pdf
- // and be *very* affraid
- //
- int l = Header->GetXSize()*Header->GetYSize();
- int nbFrames = Header->GetZSize();
-
- unsigned char * newDest = (unsigned char*) malloc(lgrTotale);
- unsigned char *x = newDest;
- unsigned char * a = (unsigned char *)destination;
- unsigned char * b = a + l;
- unsigned char * c = b + l;
-
- double R,G,B;
-
- // TODO : Replace by the 'well known'
- // integer computation counterpart
- for (int i=0;i<nbFrames;i++) {
- for (int j=0;j<l; j++) {
- R= 1.164 *(*a-16) + 1.596 *(*c -128) + 0.5;
- G= 1.164 *(*a-16) - 0.813 *(*c -128) - 0.392 *(*b -128) + 0.5;
- B= 1.164 *(*a-16) + 2.017 *(*b -128) + 0.5;
-
- if (R<0.0) R=0.0;
- if (G<0.0) G=0.0;
- if (B<0.0) B=0.0;
- if (R>255.0) R=255.0;
- if (G>255.0) G=255.0;
- if (B>255.0) B=255.0;
-
- *(x++) = (unsigned char)R;
- *(x++) = (unsigned char)G;
- *(x++) = (unsigned char)B;
- a++; b++; c++;
- }
- }
- memmove(destination,newDest,lgrTotale);
- free(newDest);
-
- } else {
-
- // need to make RGB Pixels from R,G,B Planes
- // (all the Frames at a time)
-
- int l = Header->GetXSize()*Header->GetYSize()*Header->GetZSize();
-
- char * newDest = (char*) malloc(lgrTotale);
- char * x = newDest;
- char * a = (char *)destination;
- char * b = a + l;
- char * c = b + l;
-
- for (int j=0;j<l; j++) {
- *(x++) = *(a++);
- *(x++) = *(b++);
- *(x++) = *(c++);
- }
-
- memmove(destination,newDest,lgrTotale);
- free(newDest);
- }
-
- break;
- }
-
- case 2:
- // Palettes were found
- // Let the user deal with them !
- return lgrTotale;
- }
- // now, it's an RGB image
- // Lets's write it in the Header