| 34 | namespace e57 |
| 35 | { |
| 36 | BlobNodeImpl::BlobNodeImpl( ImageFileImplWeakPtr destImageFile, int64_t byteCount ) : |
| 37 | NodeImpl( destImageFile ) |
| 38 | { |
| 39 | // don't checkImageFileOpen, NodeImpl() will do it |
| 40 | |
| 41 | ImageFileImplSharedPtr imf( destImageFile ); |
| 42 | |
| 43 | // This what caller thinks blob length is |
| 44 | blobLogicalLength_ = byteCount; |
| 45 | |
| 46 | // Round segment length up to multiple of 4 bytes |
| 47 | binarySectionLogicalLength_ = sizeof( BlobSectionHeader ) + blobLogicalLength_; |
| 48 | unsigned remainder = binarySectionLogicalLength_ % 4; |
| 49 | if ( remainder > 0 ) |
| 50 | { |
| 51 | binarySectionLogicalLength_ += 4 - remainder; |
| 52 | } |
| 53 | |
| 54 | // Reserve space for blob in file, extend with zeros since writes will |
| 55 | // happen at later time by caller |
| 56 | binarySectionLogicalStart_ = imf->allocateSpace( binarySectionLogicalLength_, true ); |
| 57 | |
| 58 | // Prepare BlobSectionHeader |
| 59 | BlobSectionHeader header; |
| 60 | header.sectionLogicalLength = binarySectionLogicalLength_; |
| 61 | #ifdef E57_VERBOSE |
| 62 | header.dump(); //??? |
| 63 | #endif |
| 64 | |
| 65 | // Write header at beginning of section |
| 66 | imf->file_->seek( binarySectionLogicalStart_ ); |
| 67 | imf->file_->write( reinterpret_cast<char *>( &header ), sizeof( header ) ); |
| 68 | } |
| 69 | |
| 70 | BlobNodeImpl::BlobNodeImpl( ImageFileImplWeakPtr destImageFile, int64_t fileOffset, |
| 71 | int64_t length ) : NodeImpl( destImageFile ) |
nothing calls this directly
no test coverage detected