Open AL inconsistent on SB Audigy2

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Grey Alien
 #1
Wow, so it's an OpenAL problem. How crap is that!?

Strict

Global CurrentDriver$
Global Channel:TChannel
Global TestSound:TSound

SetDriver("FreeAudio")
'SetDriver("DirectSound")
'SetDriver("OpenAL")

Graphics 400,300,0

Local LastTime = MilliSecs()
While Not KeyHit(KEY_ESCAPE)
	Local now = MilliSecs()
	'Play a sound?
	If now > LastTime+100 Then
		LastTime = now 'reset
		CueSound(TestSound,Channel)
		ResumeChannel(Channel)
	EndIf

	'Change driver?
	If KeyHit(Key_Space) Then
		Select CurrentDriver
			Case "FreeAudio"
				SetDriver("DirectSound")
			Case "DirectSound"
				SetDriver("OpenAL")
			Case "OpenAL"
				SetDriver("FreeAudio")
		End Select
	EndIf
		
	Cls
	DrawText "Current Driver="+CurrentDriver,10,10
	DrawText "Press <escape> to exit",10,30
	DrawText "Press <space> to change driver",10,50
	Flip	
Wend

Function SetDriver(Driver$)
	CurrentDriver = Driver
	SetAudioDriver(Driver)
	SetupSound()
End Function

Function SetupSound()
	Channel =  AllocChannel()
	TestSound = LoadSound("rapid.wav")	
End Function

End


If you want to rule out the up to 16ms (or so) variation due to Flip, then comment Flip out. OpenAL plays the samples slower than the other two drivers, explain that!