- return;
- }
-
- // Encoded pixel data: for the time being we are only concerned with
- // Jpeg or RLE Pixel data encodings.
- // As stated in PS 3.5-2003, section 8.2 p44:
- // "If sent in Encapsulated Format (i.e. other than the Native Format) the
- // value representation OB is used".
- // Hence we expect an OB value representation. Concerning OB VR,
- // the section PS 3.5-2003, section A.4.c p 58-59, states:
- // "For the Value Representations OB and OW, the encoding shall meet the
- // following specifications depending on the Data element tag:"
- // [...snip...]
- // - the first item in the sequence of items before the encoded pixel
- // data stream shall be basic offset table item. The basic offset table
- // item value, however, is not required to be present"
-
- ReadAndSkipEncapsulatedBasicOffsetTable();
-
- // Encapsulated RLE Compressed Images (see PS 3.5-2003, Annex G)
- // Loop on the individual frame[s] and store the information
- // on the RLE fragments in a RLEFramesInfo.
- // Note: - when only a single frame is present, this is a
- // classical image.
- // - when more than one frame are present, then we are in
- // the case of a multi-frame image.
- long frameLength;
- while ( (frameLength = ReadTagLength(0xfffe, 0xe000)) )
- {
- // Parse the RLE Header and store the corresponding RLE Segment
- // Offset Table information on fragments of this current Frame.
- // Note that the fragment pixels themselves are not loaded
- // (but just skipped).
- long frameOffset = Fp->tellg();
-
- uint32_t nbRleSegments = ReadInt32();
- if ( nbRleSegments > 16 )
- {
- // There should be at most 15 segments (refer to RLEFrame class)
- gdcmVerboseMacro( "Too many segments.");
- }
-
- uint32_t rleSegmentOffsetTable[16];
- for( int k = 1; k <= 15; k++ )
- {
- rleSegmentOffsetTable[k] = ReadInt32();
- }
-
- // Deduce from both the RLE Header and the frameLength the
- // fragment length, and again store this info in a
- // RLEFramesInfo.
- long rleSegmentLength[15];
- // skipping (not reading) RLE Segments
- if ( nbRleSegments > 1)
- {
- for(unsigned int k = 1; k <= nbRleSegments-1; k++)
- {
- rleSegmentLength[k] = rleSegmentOffsetTable[k+1]
- - rleSegmentOffsetTable[k];
- SkipBytes(rleSegmentLength[k]);
- }
- }
-
- rleSegmentLength[nbRleSegments] = frameLength
- - rleSegmentOffsetTable[nbRleSegments];
- SkipBytes(rleSegmentLength[nbRleSegments]);
-
- // Store the collected info
- RLEFrame *newFrameInfo = new RLEFrame;
- newFrameInfo->NumberFragments = nbRleSegments;
- for( unsigned int uk = 1; uk <= nbRleSegments; uk++ )
- {
- newFrameInfo->Offset[uk] = frameOffset + rleSegmentOffsetTable[uk];
- newFrameInfo->Length[uk] = rleSegmentLength[uk];
- }
- RLEInfo->Frames.push_back( newFrameInfo );
- }
-
- // Make sure that at the end of the item we encounter a 'Sequence
- // Delimiter Item':
- if ( !ReadTag(0xfffe, 0xe0dd) )