BdsDataFileLog.h

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/*******************************************************************************
 *  BdsDataFileLog.h    Data File Access
 *          T.Barnaby,  BEAM Ltd,   2008-06-24
 *******************************************************************************
 */
#ifndef BdsDataFileLog_H
#define BdsDataFileLog_H
 
#include <BdsDataFile.h>
#include <BdsD.h>
 
namespace Bds {
 
class DataFileLog : public DataFile {
public:
                DataFileLog();
 
    BError          open(BString fileName, BString mode);
 
    DataOrder       getDataOrder();
    int         getFeatures();
    
    BError          getInfo(DataInfo& dataInfo, DataFileOptions options, BList<DataError>& errors);
    BError          readData(BUInt32 channel, BUInt segment, BUInt32 blockNumber, DataBlock& data);
 
    BError          setFormat(BString format);
    BError          setInfo(const DataInfo& dataInfo, const ChannelInfos& channelInfos, WriteOptionsList options = WriteOptionSensorData);
    BError          start(BUInt channel, BUInt segment);
    BError          writeData(const DataBlock& data);
    BError          end();
 
    static DataFormats  getFormats();
 
private:
    BError          readBlock(BUInt32 channel, BUInt64 pos, DataBlock& data, BUInt64& posNext);
 
    DataInfo        odataInfo;
    ChannelInfos        ochannelInfos;
    BString         oformat;
    BArray<DataBlockPos>    oblockPositions;
};
 
}
#endif