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Working with Multiple soundcard ..?

I'm using dephi, How can I select which sound card of my two installed, I want to use for playback. My program must be able to a different song on each of the two sound cards. The problem is that I don't know If/How you can do this with MCI.  

Please help me.

Thanks
-sirro
0
sirro
Asked:
sirro
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1 Solution
 
Ferruccio AccalaiSenior developer, analyst and customer assistance Commented:
try this:

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs,mmsystem, StdCtrls, MPlayer;

type
  TForm1 = class(TForm)
    ComboBox1: TComboBox;
    MediaPlayer1: TMediaPlayer;
    procedure FormCreate(Sender: TObject);
    procedure ComboBox1CloseUp(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;
  outcaps: TWaveOutCaps;
  parms: MCI_WAVE_SET_PARMS;
implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
var
  i: Integer;
begin
i := waveOutGetNumDevs;
for i := 0 to i - 1 do
   begin
      waveOutGetDevCaps(i, @outcaps, SizeOf(outcaps));
      Combobox1.Items.Add(outcaps.szPname); //to add the card display names
   end;
   Combobox1.ItemIndex := 0;
   Combobox1closeup(self);
end;

procedure TForm1.ComboBox1CloseUp(Sender: TObject);
begin
    parms.wOutput := Combobox1.itemindex;
    mciSendCommand(MediaPlayer1.DeviceID, MCI_SET, MCI_WAVE_OUTPUT, Longint(@parms));
end;

end.

and for multiple take a look at this

http://www.experts-exchange.com/Programming/Programming_Languages/Delphi/Q_20679099.html
0
 
sirroAuthor Commented:

Hai Ferrucio, I've tried code you've been sent in my computer,
but unfortunately, in only works in wav file, when I'm trying mp3 file, the output sound always played by default soundcard. Is there any additioanl setting (registry perhaps..), that I've set first.


Thanks
-sirro
0
 
Ferruccio AccalaiSenior developer, analyst and customer assistance Commented:
AFAIK it works also for MP3...do you have some mp3 player installed like winamp or something else?
BTW try going on file association settings (in explorer) and remove the mp3 association, then try it again....
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sirroAuthor Commented:

Of course I have Mp3 players program on my computer,
I also trying on vcd *.dat files, and like the previous, the sound is out to default soundcard setting
Fyi, the error code is  274 "The MCI device you are using does not support the specified command"
Is there any suggestion on that error

Thanks
Purno
0
 
Ferruccio AccalaiSenior developer, analyst and customer assistance Commented:
Yeah i understand now...
Here we should need Slick812 :)
Well, look at this to play mp3's with MCI
http://www.experts-exchange.com/Programming/Programming_Languages/Delphi/Q_20506184
and combine it with the previous (i mean how to enumerate Audio devices)....
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sirroAuthor Commented:
thanks, and I have tried your suggestion,
but one more, when I change the device form 1st into 2nd soundcard that error message raise :(
 274 "The MCI device you are using does not support the specified command"

any more suggestion ?
why its work on wave files but not works on mp3 or mpg files ??
is there any additional setting on my PC ??

Thanks
~sirro
0
 
Ferruccio AccalaiSenior developer, analyst and customer assistance Commented:
If you use MCI_WAVE_SET_PARMS then the expected format for the device is a Wave format....

Have no time now to look in it (am at work now), but you'd use the first example to get the devices list, and then the second from the posted link to play mp3 but using the desired device (so using the device id retrieved by the first method)
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sirroAuthor Commented:
I’m stuck ,
when I’m trying command to open files

MCIreturn := mciSendCommand(3, MCI_OPEN, MCI_WAIT OR  mci_open_element ,Integer(@mciopen));

The result of mciOpen.wDeviceID always 1 ( my default soundcard )
How can I make it to 2(my second soundcard)

And when I force the device to 2, Then I command to play file with

    dwReturn:=mciSendCommand(DeviceID, MCI_PLAY, MCI_NOTIFY,   Integer(@mciPlay));
the error return always 274

I have explored MSDN, I don’t know maybe because of my foolish I’m still confuse
Any solutions guys… ?


~sirro
0
 
sirroAuthor Commented:
Okay I'll increase the point to 200 for anyone who can help me solve my problem
0
 
moduloCommented:
PAQed with points refunded (200)

modulo
Community Support Moderator
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