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C++ GetPropertyData函数代码示例

本文整理汇总了C++中GetPropertyData函数的典型用法代码示例。如果您正苦于以下问题：C++ GetPropertyData函数的具体用法？C++ GetPropertyData怎么用？C++ GetPropertyData使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。


在下文中一共展示了GetPropertyData函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: theAddress

void	CAHALAudioDevice::GetStereoPanControlChannels(AudioObjectPropertyScope inScope, UInt32 inChannel, UInt32& outLeftChannel, UInt32& outRightChannel) const
{
	CAPropertyAddress theAddress(kAudioDevicePropertyStereoPanChannels, inScope, inChannel);
	UInt32 theValue[2] = { 0, 0 };
	UInt32 theSize = 2 * sizeof(UInt32);
	GetPropertyData(theAddress, 0, NULL, theSize, theValue);
	outLeftChannel = theValue[0];
	outRightChannel = theValue[1];
}
开发者ID:11020156，项目名称:SampleCode，代码行数:9，代码来源:CAHALAudioDevice.cpp

示例2: theAddress

CFStringRef	CAHALAudioDevice::CopyDataDestinationNameForID(AudioObjectPropertyScope inScope, UInt32 inChannel, UInt32 inID) const
{
	CAPropertyAddress theAddress(kAudioDevicePropertyPlayThruDestinationNameForIDCFString, inScope, inChannel);
	CFStringRef theAnswer = NULL;
	AudioValueTranslation theTranslation = { &inID, sizeof(UInt32), &theAnswer, sizeof(CFStringRef) };
	UInt32 theSize = sizeof(AudioValueTranslation);
	GetPropertyData(theAddress, 0, NULL, theSize, &theTranslation);
	return theAnswer;
}
开发者ID:Michael-Lfx，项目名称:iOS，代码行数:9，代码来源:CAHALAudioDevice.cpp

示例3: sizeof

AudioObjectID	CAHALAudioSystemObject::GetAudioPlugInForBundleID(CFStringRef inUID) const
{
	AudioObjectID theAnswer = kAudioObjectUnknown;
	AudioValueTranslation theValue = { &inUID, sizeof(CFStringRef), &theAnswer, sizeof(AudioObjectID) };
	CAPropertyAddress theAddress(kAudioHardwarePropertyPlugInForBundleID);
	UInt32 theSize = sizeof(AudioValueTranslation);
	GetPropertyData(theAddress, 0, NULL, theSize, &theValue);
	return theAnswer;
}
开发者ID:11020156，项目名称:SampleCode，代码行数:9，代码来源:CAHALAudioSystemObject.cpp

示例4: sizeof

void	CAAudioHardwareStream::GetAvailableDataSources(UInt32& ioNumberSources, UInt32* outSources) const
{
	UInt32 theNumberSources = std::min(GetNumberAvailableDataSources(), ioNumberSources);
	UInt32 theSize = theNumberSources * sizeof(UInt32);
	GetPropertyData(0, kAudioDevicePropertyDataSources, theSize, outSources);
	ioNumberSources = theSize / sizeof(UInt32);
	UInt32* theFirstItem = &(outSources[0]);
	UInt32* theLastItem = theFirstItem + ioNumberSources;
	std::sort(theFirstItem, theLastItem);
}
开发者ID:NikolaiUgelvik，项目名称:sooperlooper，代码行数:10，代码来源:CAAudioHardwareStream.cpp

示例5: CA4CCToCString

	void Control::Show() const
	{
		// Make a string for the class ID
		char classID[] = CA4CCToCString(mClassID);
		
		// Get the object's name
		PropertyAddress address(kCMIOObjectPropertyName, kCMIOObjectPropertyScopeGlobal, kCMIOObjectPropertyElementMaster);
		CFStringRef cfname = NULL;
		UInt32 dataUsed = 0;
		try
		{
			GetPropertyData(address, 0, NULL, sizeof(CFStringRef), dataUsed, &cfname);
		}
		catch(...)
		{
			cfname = NULL;
		}
		
		// Make a C string out of the name
		char name[256];
		name[0] = 0;
		if (cfname != NULL)
		{
			CFIndex length = 0;
			CFRange range = { 0, CFStringGetLength(cfname) };
			CFStringGetBytes(cfname, range, kCFStringEncodingUTF8, 0, false, (UInt8*)name, 255, &length);
			name[length] = 0;
			CFRelease(cfname);
		}
		
		// Get a string for the scope
		const char* scope = NULL;
		switch (GetPropertyScope())
		{
			case kCMIODevicePropertyScopeInput:
				scope = "Input";
				break;
			
			case kCMIODevicePropertyScopeOutput:
				scope = "Output";
				break;
			
			case kCMIODevicePropertyScopePlayThrough:
				scope = "Play Through";
				break;
			
			case kCMIOObjectPropertyScopeGlobal:
			default:
				scope = "Global";
				break;
		};
		
		// Print the information to the standard output
		printf("CMIOObjectID:\t\t0x%lX\n\tCMIOClassID:\t'%s'\n\tName:\t\t\t%s\n\tScope:\t\t\t%s\n\tChannel:\t\t%lu\n", (long unsigned int)mObjectID, classID, name, scope, (long unsigned int)GetPropertyElement());
	}
开发者ID:AdamDiment，项目名称:CocoaSampleCode，代码行数:55，代码来源:CMIO_DP_Control.cpp

示例6: sizeof

	void Device::GetStreams(CMIOObjectPropertyScope scope, UInt32& ioNumberStreams, CMIOStreamID* streamList) const
	{
		ioNumberStreams = std::min(GetNumberStreams(scope), ioNumberStreams);
		UInt32 size = ioNumberStreams * sizeof(CMIOStreamID);
		UInt32 dataUsed = 0;
		GetPropertyData(PropertyAddress(kCMIODevicePropertyStreams, scope), 0, NULL, size, dataUsed, streamList);
		ioNumberStreams = size / sizeof(CMIOStreamID);
		CMIOStreamID* firstItem = &(streamList[0]);
		CMIOStreamID* lastItem = firstItem + ioNumberStreams;
		std::sort(firstItem, lastItem);
	}
开发者ID:AdamDiment，项目名称:CocoaSampleCode，代码行数:11，代码来源:CMIO_DALA_Device.cpp

示例7: HasProperty

	bool Device::IsAlive() const
	{
		bool answer = HasProperty(PropertyAddress(kCMIODevicePropertyDeviceIsAlive));
		if (answer)
		{
			UInt32 isAlive = 0;
			UInt32 dataUsed = 0;
			GetPropertyData(PropertyAddress(kCMIODevicePropertyDeviceIsAlive), 0, NULL, sizeof(UInt32), dataUsed, &isAlive);
			answer = isAlive != 0;
		}
		return answer;
	}
开发者ID:AdamDiment，项目名称:CocoaSampleCode，代码行数:12，代码来源:CMIO_DALA_Device.cpp

示例8: GetNumberDevices

AudioDeviceID	CAAudioHardwareSystem::GetDeviceAtIndex(UInt32 inIndex)
{
	AudioDeviceID theAnswer = 0;
	UInt32 theNumberDevices = GetNumberDevices();
	if((theNumberDevices > 0) && (inIndex < theNumberDevices))
	{
		CAAutoArrayDelete<AudioDeviceID> theDeviceList(theNumberDevices);
		UInt32 theSize = theNumberDevices * sizeof(AudioDeviceID);
		GetPropertyData(kAudioHardwarePropertyDevices, theSize, theDeviceList);
		theAnswer = theDeviceList[inIndex];
	}
	return theAnswer;
}
开发者ID:BitMax，项目名称:openitg，代码行数:13，代码来源:CAAudioHardwareSystem.cpp

示例9: GetNumberItems

	UInt32 SelectorControl::GetItemIDForIndex(UInt32 inItemIndex) const
	{
		UInt32 answer = 0xFFFFFFFF;	// Default to the featuring being on
		UInt32 numberOfItems = GetNumberItems();
		if (numberOfItems > 0)
		{
			ThrowIf(inItemIndex >= numberOfItems, CAException(kCMIOHardwareIllegalOperationError), "SelectorControl::GetItemIDForIndex: index out of range");			
			CAAutoArrayDelete<UInt32> itemList(numberOfItems);
			UInt32 size = numberOfItems * sizeof(CMIODeviceID);
			UInt32 dataUsed = 0;
			GetPropertyData(PropertyAddress(kCMIOSelectorControlPropertyAvailableItems),0, NULL, size, dataUsed, itemList);
			answer = itemList[inItemIndex];
		}
		return answer;
	}
开发者ID:AdamDiment，项目名称:CocoaSampleCode，代码行数:15，代码来源:CMIO_DALA_Control.cpp

示例10: address

	UInt32 Device::GetTotalNumberChannels(CMIOObjectPropertyScope scope) const
	{
		UInt32 answer = 0;
		#warning Device::GetTotalNumberChannels() needs to be implemented
		PropertyAddress address(kCMIODevicePropertyStreamConfiguration, scope);
		UInt32 size = GetPropertyDataSize(address, 0, NULL);
		CAAutoFree<CMIODeviceStreamConfiguration> streamConfiguration(size);
		UInt32 dataUsed = 0;
		GetPropertyData(address, 0, NULL, size, dataUsed, streamConfiguration);

		for(UInt32 index = 0; index < streamConfiguration->mNumberStreams; ++index)
		{
			answer += streamConfiguration->mNumberChannels[index];
		}
		return answer;
	}
开发者ID:AdamDiment，项目名称:CocoaSampleCode，代码行数:16，代码来源:CMIO_DALA_Device.cpp

示例11: theAddress

AudioClassID	CAHALAudioObject::GetClassID() const
{
	//	set up the return value
	AudioClassID theAnswer = 0;
	
	//	set up the property address
	CAPropertyAddress theAddress(kAudioObjectPropertyClass);
	
	//	make sure the property exists
	if(HasProperty(theAddress))
	{
		UInt32 theSize = sizeof(AudioClassID);
		GetPropertyData(theAddress, 0, NULL, theSize, &theAnswer);
	}
	
	return theAnswer;
}
开发者ID:NikolaiUgelvik，项目名称:sooperlooper，代码行数:17，代码来源:CAHALAudioObject.cpp

示例12: GetPropertyData

OSStatus
PA_Stream::GetProperty(UInt32 inChannel,
		       AudioDevicePropertyID inPropertyID,
		       UInt32 *ioPropertyDataSize,
		       void *outPropertyData)
{
	AudioObjectPropertyAddress addr;
	
	addr.mSelector = inPropertyID;
	addr.mElement = inChannel;
	addr.mScope = 0;
	
	if (!HasProperty(&addr))
		return kAudioHardwareUnknownPropertyError;
	
	return GetPropertyData(&addr, 0, NULL, ioPropertyDataSize, outPropertyData);
}
开发者ID:artisdom，项目名称:PulseAudioOSX，代码行数:17，代码来源:PA_Stream.cpp

示例13: GetClassID

	//-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
	// Control::GetVariant()
	//-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
	UInt32 Control::GetVariant() const
	{
		// Setup the answer
		CMIOObjectPropertyElement answer = GetClassID();
		
		// Setup the property address
		PropertyAddress address(kCMIOControlPropertyVariant);
		
		// Make sure the property exists
		if (HasProperty(address))
		{
			// Get the property data
			UInt32 dataUsed = 0;
			GetPropertyData(address, 0, NULL, sizeof(UInt32), dataUsed, &answer);
		}
		
		return answer;
	}
开发者ID:AdamDiment，项目名称:CocoaSampleCode，代码行数:21，代码来源:CMIO_DALA_Control.cpp

示例14: address

	//-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
	// Control::GetPropertyScope()
	//	Get the CMIOObjectPropertyScope IN THE OWNING CMIOObject that contains the control.  (Controls themselves only have kCMIOObjectPropertyScopeGlobal)
	//-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
	CMIOObjectPropertyScope Control::GetPropertyScope() const
	{
		// Setup the answer
		CMIOObjectPropertyScope answer = kCMIOObjectPropertyScopeGlobal;
		
		// Setup the property address
		PropertyAddress address(kCMIOControlPropertyScope);
		
		// Make sure the property exists
		if (HasProperty(address))
		{
			// Get the property data
			UInt32 dataUsed = 0;
			GetPropertyData(address, 0, NULL, sizeof(CMIOObjectPropertyScope), dataUsed, &answer);
		}
		
		return answer;
	}
开发者ID:AdamDiment，项目名称:CocoaSampleCode，代码行数:22，代码来源:CMIO_DALA_Control.cpp

示例15: if

AudioDeviceID	CAAudioHardwareSystem::GetDefaultDevice(bool inIsInput, bool inIsSystem)
{
	AudioDeviceID theAnswer = 0;
	AudioHardwarePropertyID thePropertyID = 0;
	if(inIsInput)
	{
		thePropertyID = kAudioHardwarePropertyDefaultInputDevice;
	}
	else if(inIsSystem)
	{
		thePropertyID = kAudioHardwarePropertyDefaultSystemOutputDevice;
	}
	else
	{
		thePropertyID = kAudioHardwarePropertyDefaultOutputDevice;
	}
	UInt32 theSize = sizeof(AudioDeviceID);
	GetPropertyData(thePropertyID, theSize, &theAnswer);
	return theAnswer;
}
开发者ID:BitMax，项目名称:openitg，代码行数:20，代码来源:CAAudioHardwareSystem.cpp


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