diff options
Diffstat (limited to 'Medley/src/base/USong.pas')
| -rw-r--r-- | Medley/src/base/USong.pas | 329 |
1 files changed, 324 insertions, 5 deletions
diff --git a/Medley/src/base/USong.pas b/Medley/src/base/USong.pas index c465f198..d4eb714d 100644 --- a/Medley/src/base/USong.pas +++ b/Medley/src/base/USong.pas @@ -64,7 +64,8 @@ uses type - TSingMode = ( smNormal, smPartyMode, smPlaylistRandom ); + TSingMode = ( smNormal, smPartyMode, smPlaylistRandom, smMedley ); + TMedleySource = ( msNone, msCalculated, msTag ); TBPM = record BPM: real; @@ -85,6 +86,16 @@ type Content: UTF8String; end; + TMedley = record + Source: TMedleySource; //source of the information + StartBeat: integer; //start beat of medley + EndBeat: integer; //end beat of medley + FadeIn: integer; //start beat of fadein + FadeOut: integer; //end beat of fadeout + FadeIn_time: real; //FadeIn-Time in seconds + FadeOut_time: real; //FadeIn-Time in seconds + end; + TSong = class private FileLineNo : integer; // line, which is read last, for error reporting @@ -157,6 +168,9 @@ type MultBPM : integer; LastError: AnsiString; + + Medley: TMedley; //infos for medley-mode and preview start + function GetErrorLineNo: integer; property ErrorLineNo: integer read GetErrorLineNo; @@ -168,6 +182,9 @@ type function Analyse(const ReadCustomTags: Boolean = false): boolean; function AnalyseXML(): boolean; procedure Clear(); + procedure FindRefrainStart; + procedure SetMedleyMode; + function ReadMedleyFile(MedleyFilePath: IPath): boolean; end; implementation @@ -178,7 +195,7 @@ uses UIni, UPathUtils, UMusic, //needed for Lines - UNote; //needed for Player + UNote; const DEFAULT_ENCODING = encAuto; @@ -461,6 +478,7 @@ begin Exit; end; + SetLength(Lines, 0); //just a fix.. for medley-mod SetLength(Lines, 2); for Count := 0 to High(Lines) do begin @@ -589,7 +607,6 @@ begin if (High(Lines[Count].Line) >= 0) then Lines[Count].Line[High(Lines[Count].Line)].LastLine := true; end; - Result := true; end; @@ -1292,6 +1309,7 @@ begin Creator := ''; Relative := false; + Medley.Source := msNone; end; function TSong.Analyse(const ReadCustomTags: Boolean): boolean; @@ -1310,7 +1328,10 @@ begin Self.clear; //Read Header - Result := Self.ReadTxTHeader(SongFile, ReadCustomTags) + Result := Self.ReadTxTHeader(SongFile, ReadCustomTags); + + //Load Song (for testing) + Result := Result and Self.LoadSong; finally SongFile.Free; end; @@ -1318,7 +1339,6 @@ end; function TSong.AnalyseXML(): boolean; - begin Result := false; @@ -1331,6 +1351,305 @@ begin //Read Header Result := self.ReadXMLHeader( FileName ); + //Load Song (for testing) + Result := Result and self.LoadXMLSong; + +end; + + +{* new procedure for preview + tries find out the beginning of a refrain *} +procedure TSong.FindRefrainStart(); +Type + TSeries = record + start: integer; //Start sentence of series + end_: integer; //End sentence of series + len: integer; //Length of sentence series + end; + +var + I, J, K, num_lines: integer; + sentences: array of UTF8String; + series: array of TSeries; + temp_series: TSeries; + max: integer; + +begin + if Medley.Source = msTag then + Exit; + + num_lines := Length(Lines[0].Line); + SetLength(sentences, num_lines); + + //build sentences array + for I := 0 to num_lines - 1 do + begin + sentences[I] := ''; + for J := 0 to Length(Lines[0].Line[I].Note) - 1 do + begin + sentences[I] := sentences[I] + Lines[0].Line[I].Note[J].Text; + end; + end; + + //find equal sentences series + SetLength(series, 0); + + for I := 0 to num_lines - 2 do + begin + for J := I+1 to num_lines - 1 do + begin + if sentences[I]=sentences[J] then + begin + temp_series.start := I; + temp_series.end_ := I; + + if (J+J-I-1>num_lines-1) then + max:=num_lines-1-J + else + max:=J-I-1; + + for K := 1 to max do + begin + if sentences[I+K]=sentences[J+K] then + temp_series.end_ := I+K + else + break; + end; + temp_series.len := temp_series.end_ - temp_series.start + 1; + SetLength(series, Length(series)+1); + series[Length(series)-1] := temp_series; + end; + end; + end; + + //search for longest sequence + if Length(series)>0 then + begin + max := 0; + for I := 0 to Length(series) - 1 do + begin + if series[I].len > series[max].len then + max := I; + end; + end; + + if (Length(series)>0) and (series[max].len > 3) then + begin + Medley.Source := msCalculated; + Medley.StartBeat := Lines[0].Line[series[max].start].Note[0].Start; + end else + Medley.Source := msNone; +end; + +//sets a song to medley-mod: +//converts all unneeded notes into freestyle +//updates score values +procedure TSong.SetMedleyMode; +var + pl, line, note: integer; + LF: TLineFragment; + start: integer; + end_: integer; +begin + start := self.Medley.StartBeat; + end_ := self.Medley.EndBeat; + + for pl := 0 to Length(Lines) - 1 do + begin + Lines[pl].ScoreValue := 0; + for line := 0 to Length(Lines[pl].Line) - 1 do + begin + Lines[pl].Line[line].TotalNotes := 0; + for note := 0 to Length(Lines[pl].Line[line].Note) - 1 do + begin + LF := Lines[pl].Line[line].Note[note]; + if LF.Start < start then //check start + Lines[pl].Line[line].Note[note].NoteType := ntFreestyle + else if LF.Start>= end_ then //check end + Lines[pl].Line[line].Note[note].NoteType := ntFreestyle + else + begin + //add this notes value ("notes length" * "notes scorefactor") to the current songs entire value + Inc(Lines[pl].ScoreValue, LF.Length * ScoreFactor[LF.NoteType]); + //and to the current lines entire value + Inc(Lines[pl].Line[line].TotalNotes, LF.Length * ScoreFactor[LF.NoteType]); + end; + end; + end; + end; +end; + +//reads the txtm +//TODO move this to ReadTXTHeader and implement the MEDLEY-TAGS in txt-file: +//conversion: START-> MEDLEY_START +// END-> MEDLEY_END +// FADE_IN -> MEDLEY_FADE_IN +// FADE_OUT-> MEDLEY_FADE_OUT +//TODO: write a tool to convert existing txtm +function TSong.ReadMedleyFile(MedleyFilePath: IPath): boolean; +const + DEFAULT_FADE_IN_TIME = 10; + DEFAULT_FADE_OUT_TIME = 4; +var + Line, Identifier: string; + Value: string; + SepPos: integer; // separator position + Done: byte; // bit-vector of mandatory fields + EncFile: IPath; // encoded filename + FullFileName: string; + LineNo: integer; + MedleyFile: TTextFileStream; + found_fadeIn, found_fadeOut: boolean; + +begin + Result := true; + Done := 0; + + MedleyFile := TMemTextFileStream.Create(MedleyFilePath, fmOpenRead); + FullFileName := MedleyFilePath.ToNative; + + //set standard values + found_fadeIn := false; + found_fadeOut := false; + + //Read first Line + MedleyFile.ReadLine(Line); + if (Length(Line) <= 0) then + begin + Log.LogError('File starts with empty line: ' + FullFileName, + 'TSong.ReadMedleyFile'); + Result := false; + Exit; + end; + + // check if file begins with a UTF-8 BOM, if so set encoding to UTF-8 + if (CheckReplaceUTF8BOM(Line)) then + Encoding := encUTF8; + + //Read Lines while Line starts with # or its empty + while (Length(Line) = 0) or (Line[1] = '#') do + begin + //Increase Line Number + Inc (LineNo); + SepPos := Pos(':', Line); + + //Line has no Seperator, ignore non header field + if (SepPos = 0) then + begin + // read next line + if (not MedleyFile.ReadLine(Line)) then + begin + Result := false; + Log.LogError('File incomplete or not Ultrastar txtm (A): ' + FullFileName); + Break; + end; + Continue; + end; + + //Read Identifier and Value + Identifier := UpperCase(Trim(Copy(Line, 2, SepPos - 2))); //Uppercase is for Case Insensitive Checks + Value := Trim(Copy(Line, SepPos + 1, Length(Line) - SepPos)); + + //Check the Identifier (If Value is given) + if (Length(Value) = 0) then + begin + Log.LogWarn('Empty field "'+Identifier+'" in file ' + FullFileName, + 'TSong.ReadMedleyFile'); + end + else + begin + + //----------- + //Required Attributes + //----------- + + if (Identifier = 'START') then + begin + if TryStrtoInt(Value, self.Medley.StartBeat) then + //Add START flag to Done + Done := Done or 1; + end + + else if (Identifier = 'END') then + begin + if TryStrtoInt(Value, self.Medley.EndBeat) then + //Add END Flag to Done + Done := Done or 2; + end + + //--------- + //Additional Header Information + //--------- + + else if (Identifier = 'FADE_IN') then + begin + if TryStrtoInt(Value, self.Medley.FadeIn) then + found_fadeIn := true; + end + + else if (Identifier = 'FADE_OUT') then + begin + if TryStrtoInt(Value, self.Medley.FadeOut) then + found_fadeOut := true; + end + end; // End check for non-empty Value + + // read next line + if (not MedleyFile.ReadLine(Line)) then + begin + Result := false; + Log.LogError('File incomplete or not Ultrastar txtm (A): ' + FullFileName); + Break; + end; + end; // while + + //Check if all Required Values are given + if (Done <> 3) then + begin + Result := false; + if (Done and 2) = 0 then //No End Flag + Log.LogError('END tag missing: ' + FullFileName) + else if (Done and 1) = 0 then //No Start Flag + Log.LogError('START tag missing: ' + FullFileName) + else //unknown Error + Log.LogError('File incomplete or not Ultrastar txtm (B - '+ inttostr(Done) +'): ' + FullFileName); + + Self.Medley.Source := msNone; + end else if self.Medley.StartBeat>=self.Medley.EndBeat then + begin + Log.LogError('Failed to load MEDLEY-TAGS (Start>=End): ' + FullFileName); + self.Medley.Source := msNone; + Result := false; + end else if found_fadeIn and (self.Medley.FadeIn>=self.Medley.StartBeat) then + begin + Log.LogError('Failed to load MEDLEY-TAGS (FadeIn>=Start): ' + FullFileName); + self.Medley.Source := msNone; + Result := false; + end else if found_fadeOut and (self.Medley.EndBeat>=self.Medley.FadeOut) then + begin + Log.LogError('Failed to load MEDLEY-TAGS (End>=FadeOut): ' + FullFileName); + self.Medley.Source := msNone; + Result := false; + end else + begin + self.Medley.Source := msTag; + CurrentSong := self; + if not found_fadeIn then //set FadeIn if not defined + begin // TODO: what if FadeIn < song start? + self.Medley.FadeIn := self.Medley.StartBeat - round(GetMidBeat(DEFAULT_FADE_IN_TIME)); + end; + if not found_fadeOut then //set FadeOut if not defined + begin // TODO: what if FadeOut > song end? + self.Medley.FadeOut := self.Medley.EndBeat + round(GetMidBeat(DEFAULT_FADE_OUT_TIME)); + end; + + //calculate fade time + + self.Medley.FadeIn_time := GetTimeFromBeat(CurrentSong.Medley.StartBeat) - + GetTimeFromBeat(CurrentSong.Medley.FadeIn); + self.Medley.FadeOut_time := GetTimeFromBeat(CurrentSong.Medley.FadeOut) - + GetTimeFromBeat(CurrentSong.Medley.EndBeat); + end; end; end. |