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...get the length of wav file (in second)?
Autor: Sigit Kuncahyo EN
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Tip Rating (9):  
     


uses
  
MPlayer, MMsystem;

type
  
EMyMCIException = class(Exception);
  TWavHeader = record
    
Marker1: array[0..3] of Char;
    BytesFollowing: Longint;
    Marker2: array[0..3] of Char;
    Marker3: array[0..3] of Char;
    Fixed1: Longint;
    FormatTag: Word;
    Channels: Word;
    SampleRate: Longint;
    BytesPerSecond: Longint;
    BytesPerSample: Word;
    BitsPerSample: Word;
    Marker4: array[0..3] of Char;
    DataBytes: Longint;
  end;

procedure TForm1.Button1Click(Sender: TObject);
var
  
Header: TWavHeader;
begin
  with 
TFileStream.Create('C:\SomeFile.wav', fmOpenRead) do
    try
      
ReadBuffer(Header, SizeOf(Header));
    finally
      
Free;
    end;
  ShowMessage(FloatToStr((Int64(1000) * header.DataBytes div header.BytesPerSecond) / 1000));
end

 

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