BTree::BTree(PageDB::Scheduler* _pgdb, const std::string& fn)
: pgdb(_pgdb), file(pgdb->OpenFile(fn)),
entrySession(pgdb->GetWriteSession(file, file->entryPageID)) {
if (magicNumber() != MagicNumber) {
initBTree();
}
}
void BTree::initBTree() {
magicNumber() = MagicNumber;
int rtPage = file->newPage();
int infoPage = file->newPage();
file->eof.Page = infoPage;
file->eof.Offset = sizeof(Information);
file->writebackFileHeaderCore();
rootPage() = rtPage;
usedRecord() = 0;
avalibleRecord() = 0;
linkHeadPage() = infoPage;
linkHeadOffset() = 0;
PageDB::PageWriteSession s = pgdb->GetWriteSession(file, infoPage);
Information* info = reinterpret_cast<Information*>(s.buf());
info->next = info->prev = PageDB::Location(infoPage, 0);
entrySession.flush();
}
#include "Kirana.h"
/******************************************************************************
* Function: Kirana
* Inputs:
* Returns:
* Description: Default constructor
******************************************************************************/
Kirana::Kirana(std::string fileNameParam="K:\Kirana Videos\2018\180215\KirImage_0001.SVF"):
magicNumber(0), // magic Number to read at begining ("SVF")
imageNum(0), // number of images
imageWidth(0), // width of image in pixels
imageHeight(0), // height of image in pixels
frameZeroSize(0), // Size of frame 0
frameZeroOffset(0), // Frame 0 offset
headerSize(0), // size of header in bytes
metaDataSize(0), // size of meta data block (images)
imageInfoSize(0), // size of image info structure
imageSeqSize(0), // Size of image sequence
offsetBytes(0), // number of bytes offset for the file
setupDataSize(0), // Size of xml setup block
versionNum(0), // Version number
cropRowLow(0), // The crop row value on the bottom
cropRowHigh(0), // The crop row value in the top
cropColHigh(0), // The crop value on the far right
cropColLow(0), // The crop value on the far left
metaData(0), // Offset of meta data block
setupData(0), // Offset of xml setup block
imageInfo(0), // Offset of image info structure
