+/////////////////////////////////////////////////////////////////
+/**
+ * \ingroup gdcmFile
+ * \brief Parse pixel data from disk and *prints* the result
+ * \ For multi-fragment Jpeg files checking purpose *only*
+ * \ Allows to 'see' if the file *does* conform
+ * \ (some of them do not)
+ * \ with Dicom Part 3, Annex A (PS 3.5-2003, page 58)
+ *
+ */
+bool gdcmFile::ParsePixelData(void) {
+ if ( !OpenFile())
+ return false;
+
+ if ( fseek(fp, GetPixelOffset(), SEEK_SET) == -1 ) {
+ CloseFile();
+ return false;
+ }
+
+ if ( !IsDicomV3() ||
+ IsImplicitVRLittleEndianTransferSyntax() ||
+ IsExplicitVRLittleEndianTransferSyntax() ||
+ IsExplicitVRBigEndianTransferSyntax() ||
+ IsDeflatedExplicitVRLittleEndianTransferSyntax() ) {
+
+ printf ("gdcmFile::ParsePixelData : non JPEG File\n");
+ return 0;
+ }
+
+ int nb;
+ string str_nb=gdcmHeader::GetPubElValByNumber(0x0028,0x0100);
+ if (str_nb == GDCM_UNFOUND ) {
+ nb = 16;
+ } else {
+ nb = atoi(str_nb.c_str() );
+ if (nb == 12) nb =16;
+ }
+ int nBytes= nb/8;
+
+ //int taille = GetXSize() * GetYSize() * GetZSize() * GetSamplesPerPixel();
+ int taille = GetXSize() * GetYSize() * GetSamplesPerPixel();
+
+ printf ("Checking the Dicom-Jpeg/RLE Pixels\n");
+
+ // ------------------------------- for Parsing : Position on begining of Jpeg Pixels
+ guint16 ItemTagGr,ItemTagEl;
+ int ln;
+ long ftellRes;
+ char * destination = NULL;
+ ftellRes=ftell(fp);
+ fread(&ItemTagGr,2,1,fp); // Reading (fffe) : Basic Offset Table Item Tag Gr
+ fread(&ItemTagEl,2,1,fp); // Reading (e000) : Basic Offset Table Item Tag El
+ if(GetSwapCode()) {
+ ItemTagGr=SwapShort(ItemTagGr);
+ ItemTagEl=SwapShort(ItemTagEl);
+ }
+ printf ("at %x : ItemTag (should be fffe,e000): %04x,%04x\n",
+ ftellRes,ItemTagGr,ItemTagEl );
+ ftellRes=ftell(fp);
+ fread(&ln,4,1,fp);
+ if(GetSwapCode())
+ ln=SwapLong(ln); // Basic Offset Table Item Lentgh
+ printf("at %x : Basic Offset Table Item Lentgh (??) %d x(%08x)\n",
+ ftellRes,ln,ln);
+ if (ln != 0) {
+ // What is it used for ??
+ char * BasicOffsetTableItemValue= (char *)malloc(ln+1);
+ fread(BasicOffsetTableItemValue,ln,1,fp);
+ guint32 a;
+ for (int i=0;i<ln;i+=4){
+ a=str2num(&BasicOffsetTableItemValue[i],guint32);
+ printf(" x(%08x) %d\n",a,a);
+ }
+ }
+
+ ftellRes=ftell(fp);
+ fread(&ItemTagGr,2,1,fp); // Reading (fffe) : Item Tag Gr
+ fread(&ItemTagEl,2,1,fp); // Reading (e000) : Item Tag El
+ if(GetSwapCode()) {
+ ItemTagGr=SwapShort(ItemTagGr);
+ ItemTagEl=SwapShort(ItemTagEl);
+ }
+ printf ("at %x : ItemTag (should be fffe,e000 or e0dd): %04x,%04x\n",
+ ftellRes,ItemTagGr,ItemTagEl );
+
+ while ( ( ItemTagGr == 0xfffe) && (ItemTagEl != 0xe0dd) ) { // Parse fragments
+
+ ftellRes=ftell(fp);
+ fread(&ln,4,1,fp);
+ if(GetSwapCode())
+ ln=SwapLong(ln); // length
+ printf(" at %x : fragment length %d x(%08x)\n",
+ ftellRes, ln,ln);
+
+ destination += taille * nBytes; // location in user's memory
+
+ printf (" Destination will be x(%x) = %d \n",
+ destination,destination );
+
+ fseek(fp,ln,SEEK_CUR); // skipping (not reading) fragment pixels
+
+ ftellRes=ftell(fp);
+ fread(&ItemTagGr,2,1,fp); // Reading (fffe) : Item Tag Gr
+ fread(&ItemTagEl,2,1,fp); // Reading (e000) : Item Tag El
+ if(GetSwapCode()) {
+ ItemTagGr=SwapShort(ItemTagGr);
+ ItemTagEl=SwapShort(ItemTagEl);
+ }
+ printf ("at %x : ItemTag (should be fffe,e000 or e0dd): %04x,%04x\n",
+ ftellRes,ItemTagGr,ItemTagEl );
+
+
+ }
+ return 1;
+}
+