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//=============================================================================
//	Includes
//=============================================================================

//	Self Include
#include "CAAudioHardwareSystem.h"

//	PublicUtility Includes
#include "CAAutoDisposer.h"
#include "CADebugMacros.h"
#include "CAException.h"

//=============================================================================
//	CAAudioHardwareSystem
//=============================================================================

UInt32	CAAudioHardwareSystem::GetNumberDevices()
{
	UInt32 theAnswer = GetPropertyDataSize(kAudioHardwarePropertyDevices);
	theAnswer /= sizeof(AudioDeviceID);
	return theAnswer;
}

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;
}

UInt32	CAAudioHardwareSystem::GetIndexForDevice(const AudioDeviceID inDevice)
{
	UInt32 theAnswer = 0xFFFFFFFF;
	UInt32 theNumberDevices = GetNumberDevices();
	if(theNumberDevices > 0)
	{
		CAAutoArrayDelete<AudioDeviceID> theDeviceList(theNumberDevices);
		UInt32 theSize = theNumberDevices * sizeof(AudioDeviceID);
		GetPropertyData(kAudioHardwarePropertyDevices, theSize, theDeviceList);
		for(UInt32 theIndex = 0; theIndex < theNumberDevices; ++theIndex)
		{
			if(inDevice == theDeviceList[theIndex])
			{
				theAnswer = theIndex;
				break;
			}
		}
	}
	return theAnswer;
}

AudioDeviceID	CAAudioHardwareSystem::GetDeviceForUID(CFStringRef inUID)
{
	AudioDeviceID theAnswer = 0;
	AudioValueTranslation theValue = { &inUID, sizeof(CFStringRef), &theAnswer, sizeof(AudioDeviceID) };
	UInt32 theSize = sizeof(AudioValueTranslation);
	GetPropertyData(kAudioHardwarePropertyDeviceForUID, theSize, &theValue);
	return theAnswer;
}

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;
}

void	CAAudioHardwareSystem::SetDefaultDevice(bool inIsInput, bool inIsSystem, AudioDeviceID inDevice)
{
	AudioHardwarePropertyID thePropertyID = 0;
	if(inIsInput)
	{
		thePropertyID = kAudioHardwarePropertyDefaultInputDevice;
	}
	else if(inIsSystem)
	{
		thePropertyID = kAudioHardwarePropertyDefaultSystemOutputDevice;
	}
	else
	{
		thePropertyID = kAudioHardwarePropertyDefaultOutputDevice;
	}
	UInt32 theSize = sizeof(AudioDeviceID);
	SetPropertyData(thePropertyID, theSize, &inDevice);
}

CFRunLoopRef	CAAudioHardwareSystem::CopyHALNotificationRunLoop()
{
	CFRunLoopRef theRunLoop = NULL;
	UInt32 theSize = sizeof(CFRunLoopRef);
	GetPropertyData(kAudioHardwarePropertyRunLoop, theSize, theRunLoop);
	return theRunLoop;
}

void	CAAudioHardwareSystem::SetHALNotificationRunLoop(CFRunLoopRef inRunLoop)
{
	UInt32 theSize = sizeof(CFRunLoopRef);
	SetPropertyData(kAudioHardwarePropertyRunLoop, theSize, &inRunLoop);
}

bool	CAAudioHardwareSystem::HasBootChimeVolumeControl()
{
	return HasProperty(kAudioHardwarePropertyBootChimeVolumeDecibels);
}

Float32	CAAudioHardwareSystem::GetBootChimeVolumeControlValueAsScalar()
{
	Float32 theAnswer = 0;
	UInt32 theSize = sizeof(Float32);
	GetPropertyData(kAudioHardwarePropertyBootChimeVolumeScalar, theSize, &theAnswer);
	return theAnswer;
}

Float32	CAAudioHardwareSystem::GetBootChimeVolumeControlValueAsDB()
{
	Float32 theAnswer = 0;
	UInt32 theSize = sizeof(Float32);
	GetPropertyData(kAudioHardwarePropertyBootChimeVolumeDecibels, theSize, &theAnswer);
	return theAnswer;
}

void	CAAudioHardwareSystem::GetBootChimeVolumeControlDBRange(Float32& outMinimum, Float32& outMaximum)
{
	AudioValueRange theRange = { 0, 0 };
	UInt32 theSize = sizeof(AudioValueRange);
	GetPropertyData(kAudioHardwarePropertyBootChimeVolumeRangeDecibels, theSize, &theRange);
	outMinimum = theRange.mMinimum;
	outMaximum = theRange.mMaximum;
}

void	CAAudioHardwareSystem::SetBootChimeVolumeControlValueAsScalar(Float32 inScalarValue)
{
	UInt32 theSize = sizeof(Float32);
	SetPropertyData(kAudioHardwarePropertyBootChimeVolumeScalar, theSize, &inScalarValue);
}

void	CAAudioHardwareSystem::SetBootChimeVolumeControlValueAsDB(Float32 inDBValue)
{
	UInt32 theSize = sizeof(Float32);
	SetPropertyData(kAudioHardwarePropertyBootChimeVolumeDecibels, theSize, &inDBValue);
}

Float32	CAAudioHardwareSystem::ConvertBootChimeVolumeControlScalarValueToDB(Float32 inScalarValue)
{
	UInt32 theSize = sizeof(Float32);
	GetPropertyData(kAudioHardwarePropertyBootChimeVolumeScalarToDecibels, theSize, &inScalarValue);
	return inScalarValue;
}

Float32	CAAudioHardwareSystem::ConvertBootChimeVolumeControlDBValueToScalar(Float32 inDBValue)
{
	UInt32 theSize = sizeof(Float32);
	GetPropertyData(kAudioHardwarePropertyBootChimeVolumeDecibelsToScalar, theSize, &inDBValue);
	return inDBValue;
}

bool	CAAudioHardwareSystem::AllowsIdleSleepDuringIO()
{
	UInt32 theValue = 0;
	UInt32 theSize = sizeof(UInt32);
	GetPropertyData(kAudioHardwarePropertySleepingIsAllowed, theSize, &theValue);
	return theValue != 0;
}

void	CAAudioHardwareSystem::SetAllowsIdleSleepDuringIO(bool inAllowIdleSleep)
{
	UInt32 theValue = inAllowIdleSleep ? 1 : 0;
	SetPropertyData(kAudioHardwarePropertySleepingIsAllowed, sizeof(UInt32), &theValue);
}

bool	CAAudioHardwareSystem::HasProperty(AudioHardwarePropertyID inPropertyID)
{
	OSStatus theError = AudioHardwareGetPropertyInfo(inPropertyID, NULL, NULL);
	return theError == 0;
}

bool	CAAudioHardwareSystem::PropertyIsSettable(AudioHardwarePropertyID inPropertyID)
{
	Boolean isWritable = false;
	OSStatus theError = AudioHardwareGetPropertyInfo(inPropertyID, NULL, &isWritable);
	ThrowIfError(theError, CAException(theError), "CAAudioHardwareSystem::PropertyIsSettable: got an error getting info about a property");
	return isWritable != 0;
}

UInt32	CAAudioHardwareSystem::GetPropertyDataSize(AudioHardwarePropertyID inPropertyID)
{
	UInt32 theSize = 0;
	OSStatus theError = AudioHardwareGetPropertyInfo(inPropertyID, &theSize, NULL);
	ThrowIfError(theError, CAException(theError), "CAAudioHardwareSystem::GetPropertyDataSize: got an error getting info about a property");
	return theSize;
}

void	CAAudioHardwareSystem::GetPropertyData(AudioHardwarePropertyID inPropertyID, UInt32& ioDataSize, void* outData)
{
	OSStatus theError = AudioHardwareGetProperty(inPropertyID, &ioDataSize, outData);
	ThrowIfError(theError, CAException(theError), "CAAudioHardwareSystem::GetPropertyData: got an error getting the value of a property");
}

void	CAAudioHardwareSystem::SetPropertyData(AudioHardwarePropertyID inPropertyID, UInt32 inDataSize, const void* inData)
{
	OSStatus theError = AudioHardwareSetProperty(inPropertyID, inDataSize, const_cast<void*>(inData));
	ThrowIfError(theError, CAException(theError), "CAAudioHardwareSystem::SetPropertyData: got an error setting the value of a property");
}

void	CAAudioHardwareSystem::AddPropertyListener(AudioHardwarePropertyID inPropertyID, AudioHardwarePropertyListenerProc inListenerProc, void* inClientData)
{
	OSStatus theError = AudioHardwareAddPropertyListener(inPropertyID, inListenerProc, inClientData);
	ThrowIfError(theError, CAException(theError), "CAAudioHardwareSystem::AddPropertyListener: got an error adding a property listener");
}

void	CAAudioHardwareSystem::RemovePropertyListener(AudioHardwarePropertyID inPropertyID, AudioHardwarePropertyListenerProc inListenerProc)
{
	OSStatus theError = AudioHardwareRemovePropertyListener(inPropertyID, inListenerProc);
	ThrowIfError(theError, CAException(theError), "CAAudioHardwareSystem::RemovePropertyListener: got an error removing a property listener");
}