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{* UltraStar Deluxe - Karaoke Game
*
* UltraStar Deluxe is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*}
program TestPortAudioDevice;
{* TestPortAudioDevice does some basic tests of the portaudio libs.
* If all works, it lists all audio input and output devices and their
* characteristics. Compile and run with simple commands.
*}
{$IFDEF FPC}
{$MODE Delphi}
{$ENDIF}
uses
SysUtils,
PortAudio in '../src/lib/portaudio/portaudio.pas';
const
paDefaultApi = -1;
const
ApiPreferenceOrder:
{$IF Defined(MSWINDOWS)}
// Note1: Portmixer has no mixer support for paASIO and paWASAPI at the moment
// Note2: Windows Default-API is MME, but DirectSound is faster
array[0..0] of TPaHostApiTypeId = ( paDirectSound );
{$ELSEIF Defined(DARWIN)}
array[0..0] of TPaHostApiTypeId = ( paDefaultApi ); // paCoreAudio
{$ELSEIF Defined(UNIX)}
// Note: Portmixer has no mixer support for JACK at the moment
array[0..2] of TPaHostApiTypeId = ( paALSA, paJACK, paOSS );
{$ELSE}
array[0..0] of TPaHostApiTypeId = ( paDefaultApi );
{$IFEND}
var
i: integer;
PaError: TPaError;
paApiIndex: TPaHostApiIndex;
paApiInfo: PPaHostApiInfo;
deviceIndex: TPaDeviceIndex;
deviceInfo: PPaDeviceInfo;
function GetPreferredApiIndex(): TPaHostApiIndex;
var
i: integer;
apiIndex: TPaHostApiIndex;
apiInfo: PPaHostApiInfo;
begin
result := -1;
// select preferred sound-API
for i:= 0 to High(ApiPreferenceOrder) do
begin
if (ApiPreferenceOrder[i] <> paDefaultApi) then
begin
// check if API is available
apiIndex := Pa_HostApiTypeIdToHostApiIndex(ApiPreferenceOrder[i]);
if (apiIndex >= 0) then
begin
// we found an API but we must check if it works
// (on linux portaudio might detect OSS but does not provide
// any devices if ALSA is enabled)
apiInfo := Pa_GetHostApiInfo(apiIndex);
if (apiInfo^.deviceCount > 0) then
begin
Result := apiIndex;
break;
end;
end;
end;
end;
// None of the preferred APIs is available -> use default
if (result < 0) then
begin
result := Pa_GetDefaultHostApi();
end;
end;
begin
writeln ('Start: Test of Portaudio libs');
writeln;
writeln ('*** Test of Pa_Initialize and Pa_Terminate ***');
PaError := Pa_Initialize;
if PaError = paNoError then
writeln ('Pa_Initialize: No error')
else
writeln ('Pa_Initialize: Error No ', PaError);
PaError := Pa_Terminate;
if PaError = paNoError then
writeln ('Pa_Terminate: No error')
else
writeln ('Pa_Terminate: Error No: ', PaError);
writeln;
writeln ('*** Test of Pa_GetVersion and Pa_GetVersionText ***');
PaError := Pa_Initialize;
writeln ('Pa_GetVersion: ', Pa_GetVersion);
writeln ('Pa_GetVersionText: ', Pa_GetVersionText);
PaError := Pa_Terminate;
writeln;
writeln ('*** Test of Pa_GetErrorText ***');
PaError := Pa_Initialize;
writeln ('paNoError (0): ', Pa_GetErrorText(PaError));
writeln;
writeln ('Code Text');
writeln ('------------------------------------');
i := paNotInitialized;
repeat
writeln (i:6, ' ', Pa_GetErrorText(i));
i := succ(i);
until SameText(Pa_GetErrorText(i), 'Invalid error code') or (i = paNotInitialized + 100);
writeln (i:6, ' ', Pa_GetErrorText(i));
PaError := Pa_Terminate;
writeln;
writeln ('*** Test of GetPreferredApiIndex ***');
PaError := Pa_Initialize;
paApiIndex := GetPreferredApiIndex();
if (paApiIndex = -1) then
writeln ('GetPreferredApiIndex: No working Audio-API found.')
else
writeln ('GetPreferredApiIndex: working Audio-API found. No: ', paApiIndex);
PaError := Pa_Terminate;
writeln;
writeln ('*** Test of Pa_GetHostApiInfo ***');
PaError := Pa_Initialize;
paApiIndex := GetPreferredApiIndex();
paApiInfo := Pa_GetHostApiInfo(paApiIndex);
writeln ('Pa_GetHostApiInfo:');
writeln ('paApiInfo.structVersion: ', paApiInfo.structVersion);
writeln ('paApiInfo._type: ', paApiInfo._type);
writeln ('paApiInfo.name: ', paApiInfo.name);
writeln ('paApiInfo.deviceCount: ', paApiInfo.deviceCount);
writeln ('paApiInfo.defaultInputDevice: ', paApiInfo.defaultInputDevice);
writeln ('paApiInfo.defaultOutputDevice: ', paApiInfo.defaultOutputDevice);
PaError := Pa_Terminate;
writeln;
writeln ('*** Test of Pa_HostApiDeviceIndexToDeviceIndex ***');
PaError := Pa_Initialize;
paApiIndex := GetPreferredApiIndex();
paApiInfo := Pa_GetHostApiInfo(paApiIndex);
for i:= 0 to paApiInfo^.deviceCount-1 do
begin
deviceIndex := Pa_HostApiDeviceIndexToDeviceIndex(paApiIndex, i);
writeln ('deviceIndex[', i, ']: ', deviceIndex);
end;
PaError := Pa_Terminate;
writeln;
writeln ('*** Test of Pa_GetDeviceInfo ***');
//
PaError := Pa_Initialize;
paApiIndex := GetPreferredApiIndex();
paApiInfo := Pa_GetHostApiInfo(paApiIndex);
for i:= 0 to paApiInfo^.deviceCount - 1 do
begin
deviceIndex := Pa_HostApiDeviceIndexToDeviceIndex(paApiIndex, i);
deviceInfo := Pa_GetDeviceInfo(deviceIndex);
writeln ('deviceInfo[', i, '].name: ', deviceInfo^.name);
writeln ('deviceInfo[', i, '].structVersion: ', deviceInfo^.structVersion, ' (should be 2)');
writeln ('deviceInfo[', i, '].hostApi: ', deviceInfo^.hostApi);
writeln ('deviceInfo[', i, '].maxInputChannels: ', deviceInfo^.maxInputChannels);
writeln ('deviceInfo[', i, '].maxOutputChannels: ', deviceInfo^.maxOutputChannels);
writeln ('deviceInfo[', i, '].defaultLowInputLatency: ', deviceInfo^.defaultLowInputLatency);
writeln ('deviceInfo[', i, '].defaultLowOutputLatency: ', deviceInfo^.defaultLowOutputLatency);
writeln ('deviceInfo[', i, '].defaultHighInputLatency: ', deviceInfo^.defaultHighInputLatency);
writeln ('deviceInfo[', i, '].defaultHighOutputLatency: ', deviceInfo^.defaultHighOutputLatency);
writeln ('deviceInfo[', i, '].defaultSampleRate: ', deviceInfo^.defaultSampleRate:5:1);
writeln;
end;
PaError := Pa_Terminate;
writeln ('End: Test of Portaudio libs');
end.
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