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add device notification for a property change (e.g. if the number of channels is changed)

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This commit is contained in:
Volker Fischer 2015-11-20 18:39:28 +00:00
parent cdeb89e514
commit fbcb7f717a
1 changed files with 37 additions and 6 deletions
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43
mac/sound.cpp
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@ -533,15 +533,28 @@ void CSound::Start()
// setup callback for xruns (only for input is enough)
AudioObjectPropertyAddress stPropertyAddress;
stPropertyAddress.mSelector = kAudioDeviceProcessorOverload;
stPropertyAddress.mElement = kAudioObjectPropertyElementMaster;
stPropertyAddress.mScope = kAudioObjectPropertyScopeGlobal;
stPropertyAddress.mSelector = kAudioDeviceProcessorOverload;
AudioObjectAddPropertyListener ( audioInputDevice[lCurDev],
&stPropertyAddress,
deviceNotification,
this );
stPropertyAddress.mSelector = kAudioDevicePropertyDeviceHasChanged;
AudioObjectAddPropertyListener ( audioInputDevice[lCurDev],
&stPropertyAddress,
deviceNotification,
this );
AudioObjectAddPropertyListener ( audioOutputDevice[lCurDev],
&stPropertyAddress,
deviceNotification,
this );
// register the callback function for input and output
AudioDeviceCreateIOProcID ( audioInputDevice[lCurDev],
callbackIO,
@ -574,10 +587,23 @@ void CSound::Stop()
// unregister the callback function for xruns
AudioObjectPropertyAddress stPropertyAddress;
stPropertyAddress.mSelector = kAudioDeviceProcessorOverload;
stPropertyAddress.mElement = kAudioObjectPropertyElementMaster;
stPropertyAddress.mScope = kAudioObjectPropertyScopeGlobal;
stPropertyAddress.mSelector = kAudioDevicePropertyDeviceHasChanged;
AudioObjectRemovePropertyListener( audioOutputDevice[lCurDev],
&stPropertyAddress,
deviceNotification,
this );
AudioObjectRemovePropertyListener( audioInputDevice[lCurDev],
&stPropertyAddress,
deviceNotification,
this );
stPropertyAddress.mSelector = kAudioDeviceProcessorOverload;
AudioObjectRemovePropertyListener( audioInputDevice[lCurDev],
&stPropertyAddress,
deviceNotification,
@ -679,13 +705,18 @@ UInt32 CSound::SetBufferSize ( AudioDeviceID& audioDeviceID,
OSStatus CSound::deviceNotification ( AudioDeviceID,
UInt32,
const AudioObjectPropertyAddress* /* inAddresses */,
void* /* inRefCon */ )
const AudioObjectPropertyAddress* inAddresses,
void* inRefCon )
{
// TODO: Do we need this anymore? If not, we can completely remove this function...
/*
CSound* pSound = static_cast<CSound*> ( inRefCon );
if ( inAddresses->mSelector == kAudioDevicePropertyDeviceHasChanged )
{
// if any property of the device has changed, to a full reload
pSound->EmitReinitRequestSignal ( RS_RELOAD_RESTART_AND_INIT );
}
/*
if ( inAddresses->mSelector == kAudioDeviceProcessorOverload )
{
// xrun handling (it is important to act on xruns under CoreAudio