Video Player using Direct Show DSPack component for Delphi





- Example of media player created with Delphi and DSPack components.

- You can download component from: https://github.com/ms301/dspack

- You should also download ffdshow from the following location :
https://sourceforge.net/projects/ffdshow-tryout/?source=directory

- Detailed procedure of video player creation is shown in the following video :






- Also full source code is listed below :

(code style formatted by http://hilite.me/ )


unit MainForm;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ComCtrls, DSPack, ExtCtrls, StdCtrls;

type
  TfrmMain = class(TForm)
    Panel1: TPanel;
    Panel2: TPanel;
    Open: TButton;
    Stop: TButton;
    Play: TButton;
    Pause: TButton;
    Timer1: TTimer;
    OPD: TOpenDialog;
    FilterGraph1: TFilterGraph;
    VideoW: TDSVideoWindowEx2;
    PBar: TProgressBar;
    procedure OpenClick(Sender: TObject);
    procedure StopClick(Sender: TObject);
    procedure PauseClick(Sender: TObject);
    procedure PlayClick(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
    procedure PBarMouseDown(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure PBarMouseUp(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  frmMain: TfrmMain;
  PBDown:Boolean=False;

implementation

{$R *.dfm}

procedure TfrmMain.FormCreate(Sender: TObject);
begin
OPD.InitialDir:=ExtractFilePath(Application.ExeName);
FilterGraph1.Active:=True;
end;

procedure TfrmMain.OpenClick(Sender: TObject);
begin
if OPD.Execute() then
begin

Timer1.Enabled:=False;
FilterGraph1.ClearGraph;
FilterGraph1.Stop;
FilterGraph1.RenderFile(OPD.FileName);
PBar.Max:=FilterGraph1.Duration;
FilterGraph1.Play;
Timer1.Enabled:=True;
end;
end;

procedure TfrmMain.PauseClick(Sender: TObject);
begin
FilterGraph1.Pause;
Timer1.Enabled:=False;
end;

procedure TfrmMain.PBarMouseDown(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
PBDown:=True;
end;

procedure TfrmMain.PBarMouseUp(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
  var
  Ratio:Real;
  Total:Integer;
  Position:Integer;
begin
if PBDown=true then
begin
Ratio:=X/PBar.ClientWidth;
Total:=Round(PBar.Max-Pbar.Min);
Position:=Round((Total*Ratio)+Round(PBar.Min));
PBar.Position:=Position;
FilterGraph1.Position:=Round(PBar.Position);
PBDown:=False;
end;
end;

procedure TfrmMain.PlayClick(Sender: TObject);
begin
FilterGraph1.Play;
Timer1.Enabled:=True;
end;

procedure TfrmMain.StopClick(Sender: TObject);
begin
FilterGraph1.Stop;
FilterGraph1.ClearGraph;
PBar.Position:=0;
Timer1.Enabled:=False;
end;

procedure TfrmMain.Timer1Timer(Sender: TObject);
begin
PBar.Position:=FilterGraph1.Position;
end;

end.
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