unit AudioDev;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, AMIWAVELib_TLB, reg;

type
  TFormAudioDevices = class(TForm)
    GroupBox1: TGroupBox;
    GroupBox2: TGroupBox;
    ComboWaveOutputDevice: TComboBox;
    ComboWaveInputDevice: TComboBox;
    CommandOutCaps: TButton;
    CommandInCaps: TButton;
    CommandOk: TButton;
    procedure FormCreate(Sender: TObject);
    procedure CommandOkClick(Sender: TObject);
    procedure ComboWaveOutputDeviceChange(Sender: TObject);
    procedure ComboWaveInputDeviceChange(Sender: TObject);
    procedure CommandOutCapsClick(Sender: TObject);
    procedure CommandInCapsClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

function Iif(expr1:integer; expr2:integer; truepart:string; falsepart:string):string;

const
 AppName='Am Sound Recorder';

var
  FormAudioDevices: TFormAudioDevices;

implementation

uses Main;

{$R *.dfm}

procedure TFormAudioDevices.FormCreate(Sender: TObject);
var i:integer;
begin
 //Enumerate wave output devices
  ComboWaveOutputDevice.Text := 'Select Play Device';
  for i := 0 to FormamSoundRecorder.amWavePro1.WaveOutNumDevs - 1 do
      ComboWaveOutputDevice.AddItem(FormamSoundRecorder.amWavePro1.WaveOutGetName(i),self);
  //Get saved wave out ID from registry
  i := GetSetting(AppName, 'Settings', 'Wave Output ID', -1);
  if not(i = -1) then ComboWaveOutputDevice.ItemIndex := i;
  //Enumerate wave input devices
  ComboWaveInputDevice.Text := 'Select Record Device';
  for i := 0 to FormamSoundRecorder.amWavePro1.WaveInNumDevs - 1 do
      ComboWaveInputDevice.AddItem(FormamSoundRecorder.amWavePro1.WaveInGetName(i),self);
  //Get saved wave in ID from registry
  i := GetSetting(AppName, 'Settings', 'Wave Input ID', -1);
  if not(i = -1) then ComboWaveInputDevice.ItemIndex := i;

end;

procedure TFormAudioDevices.CommandOkClick(Sender: TObject);
begin
 Self.Close;
end;

procedure TFormAudioDevices.ComboWaveOutputDeviceChange(Sender: TObject);
begin
  //Save in the registry the wave output device ID
  SaveSetting(AppName, 'Settings', 'Wave Output ID', ComboWaveOutputDevice.ItemIndex);
end;

procedure TFormAudioDevices.ComboWaveInputDeviceChange(Sender: TObject);
begin
  //Save in the registry the wave input device ID
  SaveSetting(AppName, 'Settings', 'Wave Input ID', ComboWaveOutputDevice.ItemIndex);

end;

procedure TFormAudioDevices.CommandOutCapsClick(Sender: TObject);
var strCaps : String;
    Caps : integer;

begin
    //Display the capabilities of the wave output device for the seclected device
 Caps := FormamSoundRecorder.amWavePro1.WaveInGetCaps(ComboWaveInputDevice.ItemIndex);

 strCaps := 'Natively supported play formats:' + #13#10;

 strCaps := strCaps + '8kHz, 8 Bit ' + #9 + #9 + IIf(Caps , am8000Hz8bit, 'Yes', 'No') + #13#10;
 strCaps := strCaps + '8kHz, 16 Bit ' + #9 + #9 + IIf(Caps , am8000Hz16bit, 'Yes', 'No') + #13#10;
 strCaps := strCaps + '11.25kHz, 8 Bit ' + #9 + #9 + IIf(Caps , am11025Hz8bit, 'Yes', 'No') + #13#10;
 strCaps := strCaps + '11.25kHz, 16 Bit ' + #9 + IIf(Caps , am11025Hz16bit, 'Yes', 'No') + #13#10;
 strCaps := strCaps + '22.05kHz, 8 Bit ' + #9 + #9 + IIf(Caps , am2205Hz8bit, 'Yes', 'No') + #13#10;
 strCaps := strCaps + '22.05kHz, 16 Bit ' + #9 + IIf(Caps , am2205Hz16bit, 'Yes', 'No') + #13#10;
 strCaps := strCaps + '44.1kHz, 8 Bit ' + #9 + #9 + IIf(Caps , am44100Hz8bit, 'Yes', 'No') + #13#10;
 strCaps := strCaps + '44.1kHz, 16 Bit ' + #9 + #9 + IIf(Caps , am44100Hz16bit, 'Yes', 'No') + #13#10;
 Showmessage('Wave Output  Capabilities' + #13#10 + strCaps);

end;

function Iif(expr1:integer; expr2:integer; truepart:string; falsepart:string):string;
begin
if ((expr1 and expr2)>0) then result:=truepart else result:=falsepart;
end;

procedure TFormAudioDevices.CommandInCapsClick(Sender: TObject);
var strCaps : String;
    Caps : integer;

begin
    //Display the capabilities of the wave output device for the seclected device
 Caps := FormamSoundRecorder.amWavePro1.WaveInGetCaps(ComboWaveInputDevice.ItemIndex);

 strCaps := 'Natively supported record formats:' + #13#10;

 strCaps := strCaps + '8kHz, 8 Bit ' + #9 + #9 + IIf(Caps , am8000Hz8bit, 'Yes', 'No') + #13#10;
 strCaps := strCaps + '8kHz, 16 Bit ' + #9 + #9 + IIf(Caps , am8000Hz16bit, 'Yes', 'No') + #13#10;
 strCaps := strCaps + '11.25kHz, 8 Bit ' + #9 + #9 + IIf(Caps , am11025Hz8bit, 'Yes', 'No') + #13#10;
 strCaps := strCaps + '11.25kHz, 16 Bit ' + #9 + IIf(Caps , am11025Hz16bit, 'Yes', 'No') + #13#10;
 strCaps := strCaps + '22.05kHz, 8 Bit ' + #9 + #9 + IIf(Caps , am2205Hz8bit, 'Yes', 'No') + #13#10;
 strCaps := strCaps + '22.05kHz, 16 Bit ' + #9 + IIf(Caps , am2205Hz16bit, 'Yes', 'No') + #13#10;
 strCaps := strCaps + '44.1kHz, 8 Bit ' + #9 + #9 + IIf(Caps , am44100Hz8bit, 'Yes', 'No') + #13#10;
 strCaps := strCaps + '44.1kHz, 16 Bit ' + #9 + #9 + IIf(Caps , am44100Hz16bit, 'Yes', 'No') + #13#10;
 Showmessage('Wave Input  Capabilities' + #13#10 + strCaps);

end;

end.