D:/work/code_by/CbmrEngine/SongDb.h

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#ifndef _SONGDB_H_
#define _SONGDB_H_

#include "SongItem.h"
#include "InputStream.h"
#include "OutputStream.h"
#define INTEGER_SCALE 10  //因為用整數代替浮點數而乘上的倍數

enum {METHOD_LINEAR_SCALING, METHOD_DTW, METHOD_LSDTW, METHOD_NOTEBEGIN_DTW};
enum {COMPARE_FROM_HEAD, COMPARE_FROM_ANYWHERE, COMPARE_FROM_REFRAIN};
class TSongDb
{
protected:
  int resampleRate, compareMethod, compareFrom;
  char compareLanguage[20];
  TSongItem **Song;  
  int songNumber;  
  int compareNum1;  
  int compareNum2;  
  int compareProgress1;  //第一階層的比對進度
  int compareProgress2;  //第二階層的比對進度
  bool expand, stopCompare;  
  int *topSongIndex;  

  void AllNoteToMid(void);  
  void SortByScore(int, int);  
public:
  TSongDb();
  ~TSongDb();
  void SetOption(int, char *language = NULL, int method = METHOD_LSDTW);
  bool Read(TInputStream *, TInputStream *, bool _expand = true);  //從index和db檔將資料庫讀進來
  bool Write(TOutputStream *, TOutputStream *);
  bool Write(TOutputStream *, TOutputStream *, int, int);
  int AddSong(TSongItem *);
  void DeleteSong(int);
  void DeleteSong(TSongItem *);
  TSongItem *GetSong(int);  //傳回資料庫中的某首歌
  int GetSongNumber(void);  //傳回資料庫中的歌曲數目
  void Compare(int *, int);  //每首歌和傳入的中介格式計算分數
  void Compare(int *, int, int, int);  //每首歌和傳入的中介格式計算分數
  int Compare(char *, char *, bool, bool *);
  int Compare(char *, int, int, bool *);
  TSongItem *GetTopSong(int);  //傳回排序後前面第n名的歌曲
  int GetTopSongIndex(int);  //傳回排序後前面第n名的歌曲索引
  void StopCompare(void);  //停止Compare函式的動作
  int GetCompareProgress(void);  //傳回比對的進度，範圍從0到100
};

#endif

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