int Ecat7Img::open(const char *fname)
{
if(!fname)
{
statmsg = imgmsg[1];
return 1;
}
// Open file for read
fp = fopen(fname, "rb");
if (!fp)
{
statmsg = imgmsg[3];
return 1;
}
fileOpen = true;
// Read header
if (readMainHeader() > 0)
{
close();
return 1;
}
// Read matrix list
if (readMatrixList() > 0)
{
close();
return 1;
}
// Calculate number of planeNr, frameNr
if (calculateNr() > 0)
{
close();
return 1;
}
// Read subheader and calculate xSize, ySize, zSize and pxlNr
if (readSubHeader() > 0)
{
close();
return 1;
}
if (alloc(planeNr, xSize, ySize) > 0)
{
statmsg = imgmsg[2];
close();
return 1;
}
// Copy information from mainheader
headerToImg();
// Set file format
setFileFormat();
return 0;
}
int CVSCPTable::init()
{
// Protect
int rv = VSCP_ERROR_SUCCESS;
struct _vscpFileRecord record;
// Open/create main file
if ( fileExists( m_path.mbc_str() ) ) {
m_ft = fopen( m_path.mbc_str(), "r+b") ; // binary Read Write
if ( NULL == m_ft ) return VSCP_ERROR_ERROR; // Failed to open file
}
else {
// Create file
m_ft = fopen( m_path.mbc_str(), "w+b") ; // binary Read Write
if ( NULL == m_ft ) return VSCP_ERROR_ERROR; // Failed to create file
if ( VSCP_TABLE_DYNAMIC == m_vscpFileHead.type ) {
m_vscpFileHead.id[0] = 0x55;
m_vscpFileHead.id[0] = 0xAA;
}
else {
m_vscpFileHead.id[0] = 0xAA;
m_vscpFileHead.id[0] = 0x55;
}
// Write header
if ( sizeof( m_vscpFileHead ) != fwrite( &m_vscpFileHead,
1,
sizeof(m_vscpFileHead), m_ft ) ) {
return VSCP_ERROR_ERROR;
}
// If we have a static table we initiate it
if ( VSCP_TABLE_STATIC == m_vscpFileHead.type ) {
_vscpFileRecord rec;
memset( &rec, 0, sizeof(_vscpFileRecord) );
for ( unsigned int i=0; i<m_vscpFileHead.staticSize; i++ ) {
if ( sizeof(_vscpFileRecord) != fwrite( &rec,
1,
sizeof(_vscpFileRecord), m_ft ) ) {
return VSCP_ERROR_ERROR;
}
}
}
}
//Read header information
rv = readMainHeader();
if ( VSCP_TABLE_DYNAMIC == m_vscpFileHead.type ) {
// Calculate number of records in file
m_number_of_records = ( fdGetFileSize( m_path.mbc_str() ) - sizeof( m_vscpFileHead ))/sizeof(_vscpFileRecord);
if ( m_number_of_records ) {
// Go to last pos - Read last timestamp
fseek( m_ft, sizeof( m_vscpFileHead ) + (m_number_of_records-1) * sizeof(_vscpFileRecord) , SEEK_SET );
(void)fread( &record, 1, sizeof(record), m_ft );
m_timestamp_last = record.timestamp;
// Go to first pos - read first timestamp
fseek( m_ft, sizeof( m_vscpFileHead ), SEEK_SET );
(void)fread( &record, 1, sizeof(record), m_ft );
m_timestamp_first = record.timestamp;
}
}
else { // STATIC TABLE
m_number_of_records = m_vscpFileHead.staticSize;
}
return rv;
}
