This is not an error. It is the reason why Apple, since they switched to Intel devices, has not had a unified/duplex builtin audio device.
The clock sources for playback and capture really *are* different on Intel ICH audio chipsets, so the results you're getting are just reflecting reaity. On Mon, Dec 21, 2015 at 5:34 AM, Oron Cherry <[email protected]> wrote: > Hi, > > > > It appears that the call to AudioDeviceGetProperty with > kAudioDevicePropertyClockDomain returns a different clock domain for the > built-in audio device in compared with built-in audio device out. > > Here’s a code example: > > > > bool bRet = false; > > UInt32 unSize = sizeof(UInt32); > > UInt32 unClockDomainIn = 0; > > UInt32 unClockDomainOut = 0; > > > > // 1. Get clock domain of input device > > OSStatus err = AudioDeviceGetProperty(inDevice->DeviceID(), 0, 0, > kAudioDevicePropertyClockDomain, &unSize, &unClockDomainIn); > > > > if(err) > > { > > // Some error handling here > > } > > > > // 2. Get clock domain of output device > > err = AudioDeviceGetProperty(outDevice->DeviceID(), 0, 0, > kAudioDevicePropertyClockDomain, &unSize, &unClockDomainOut); > > > > if(err) > > { > > // Some error handling here > > } > > > > // 3. Compare the domains > > if(unClockDomainIn == unClockDomainOut) > > { > > bRet = true; > > } > > > > return bRet; > > > > Up to Mavericks, when comparing built-in audio device in to out, > unClockDomainIn is equal to unClockDomainOut. > > In Yosemite and El Capitan unClockDomainIn and unClockDomainOut are not > the same. > > > > What could be the problem here? > > > > Thanks, > > Oron > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Coreaudio-api mailing list ([email protected]) > Help/Unsubscribe/Update your Subscription: > > https://lists.apple.com/mailman/options/coreaudio-api/paul%40linuxaudiosystems.com > > This email sent to [email protected] >
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