whats new ¦  programming tips ¦  indy articles ¦  intraweb articles ¦  informations ¦  links ¦  interviews
 misc ¦  tutorials ¦  Add&Win Game

Tips (1541)

Database (90)
Files (137)
Forms (107)
Graphic (114)
IDE (21)
Indy (5)
Internet / LAN (130)
IntraWeb (0)
Math (76)
Misc (126)
Multimedia (45)
Objects/
ActiveX (51)

OpenTools API (3)
Printing (35)
Strings (83)
System (266)
VCL (242)

Top15

Tips sort by
component


Search Tip

Add new Tip

Add&Win Game

Advertising

26 Visitors Online


 
...get the length of wav file (in second)?
Autor: Sigit Kuncahyo EN
[ Print tip ]  

Tip Rating (10):  
     


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

 

Rate this tip:

poor
very good


Copyright © by SwissDelphiCenter.ch
All trademarks are the sole property of their respective owners