unit1.pas

这份源码已提供了神龙卡的控制接口的全部源码

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, DSPack,directshow9,sdinterf,DSUtil;

type


  TForm1 = class(TForm)
    FilterGraph1: TFilterGraph;
    SDMP2DFilter: TFilter;
    SDPCMSFilter: TFilter;
    Button1: TButton;
    OpenDialog1: TOpenDialog;
    Button2: TButton;
    MP3DFilter: TFilter;
    VideoWindow1: TVideoWindow;
    avisplitter: TFilter;
    Button3: TButton;
    Button4: TButton;
    Button5: TButton;
    Button6: TButton;
    Edit1: TEdit;
    Edit2: TEdit;
    Button7: TButton;
    Button8: TButton;
    LeftChan: TButton;
    RightChan: TButton;
    Edit3: TEdit;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure Button5Click(Sender: TObject);
    procedure Button6Click(Sender: TObject);
    procedure Button7Click(Sender: TObject);
    procedure Button8Click(Sender: TObject);
    procedure LeftChanClick(Sender: TObject);
    procedure RightChanClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation
  //uses sdinterf;
{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
 FilterGraph1.ClearGraph;
 if OpenDialog1.Execute then
   FilterGraph1.RenderFile(OpenDialog1.FileName);
( SDMP2DFilter as IBasicAudio).put_Volume(-3000);   
 if not FilterGraph1.Active then
    FilterGraph1.Active:=True;
 filterGraph1.Play;

end;

procedure TForm1.Button2Click(Sender: TObject);
begin
 FilterGraph1.Stop;
 filtergraph1.Active:=False;
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
  (SDMP2DFilter as IBasicAudio).put_Volume(0);
end;

procedure TForm1.Button4Click(Sender: TObject);
begin
  (SDMP2DFilter as IBasicAudio).put_Volume(-10000);
end;

procedure TForm1.Button5Click(Sender: TObject);
begin
  // (SDMP2DFilter as IAudioOutput).SetOutput(0);
end;

procedure TForm1.Button6Click(Sender: TObject);
begin
   (SDMP2DFilter as IBasicAudio).put_Balance(0);
end;

procedure TForm1.Button7Click(Sender: TObject);
var
  BalV,VulV:integer;
  ab:PAudio_Channel;
begin
 (SDMP2DFilter as IBasicAudio).get_Volume(Vulv);
  Edit1.Text:=IntToStr(VulV);
   (SDMP2DFilter as IBasicAudio).get_Balance(BalV);
   Edit2.Text:=IntToStr(BalV);
   (SDMP2DFilter as IAudioOutput).GetChannel(ab);
   Edit3.Text:=IntToStr(Balv);
end;

procedure TForm1.Button8Click(Sender: TObject);
var
 Filter : IBaseFilter;
begin
  ShowFilterPropertyPage(handle,(SDMP2DFilter as IBaseFilter));
end;

procedure TForm1.LeftChanClick(Sender: TObject);
begin
  (SDMP2DFilter as IAudioOutput).SetChannel(Audio_Channel(1));
end;

procedure TForm1.RightChanClick(Sender: TObject);
begin
   (SDMP2DFilter as IAudioOutput).SetChannel(Audio_Channel(2));
end;

end.