/*

     File: CAHALAudioSystemObject.cpp 

 Abstract:  CAHALAudioSystemObject.h  

  Version: 2.1.1 

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*/

//==================================================================================================

//  Includes

//==================================================================================================

//  Self Include

#include "CAHALAudioSystemObject.h"

//  PublicUtility Includes

#include "CAAutoDisposer.h"

#include "CACFString.h"

#include "CAHALAudioDevice.h"

#include "CAPropertyAddress.h"

//==================================================================================================

//  CAHALAudioSystemObject

//==================================================================================================

CAHALAudioSystemObject::CAHALAudioSystemObject()

:

    CAHALAudioObject(kAudioObjectSystemObject)

{

}

CAHALAudioSystemObject::~CAHALAudioSystemObject()

{

}

UInt32  CAHALAudioSystemObject::GetNumberAudioDevices() const

{

    CAPropertyAddress theAddress(kAudioHardwarePropertyDevices);

    UInt32 theAnswer = GetPropertyDataSize(theAddress, 0, NULL);

    theAnswer /= SizeOf32(AudioObjectID);

    return theAnswer;

}

void    CAHALAudioSystemObject::GetAudioDevices(UInt32& ioNumberAudioDevices, AudioObjectID* outAudioDevices) const

{

    CAPropertyAddress theAddress(kAudioHardwarePropertyDevices);

    UInt32 theSize = ioNumberAudioDevices * SizeOf32(AudioObjectID);

    GetPropertyData(theAddress, 0, NULL, theSize, outAudioDevices);

    ioNumberAudioDevices = theSize / SizeOf32(AudioObjectID);

}

AudioObjectID   CAHALAudioSystemObject::GetAudioDeviceAtIndex(UInt32 inIndex) const

{

    AudioObjectID theAnswer = kAudioObjectUnknown;

    UInt32 theNumberDevices = GetNumberAudioDevices();

    if((theNumberDevices > 0) && (inIndex < theNumberDevices))

    {

        CAAutoArrayDelete<AudioObjectID> theDeviceList(theNumberDevices);

        GetAudioDevices(theNumberDevices, theDeviceList);

        if((theNumberDevices > 0) && (inIndex < theNumberDevices))

        {

            theAnswer = theDeviceList[inIndex];

        }

    }

    return theAnswer;

}

AudioObjectID   CAHALAudioSystemObject::GetAudioDeviceForUID(CFStringRef inUID) const

{

    AudioObjectID theAnswer = kAudioObjectUnknown;

    AudioValueTranslation theValue = { &inUID, sizeof(CFStringRef), &theAnswer, sizeof(AudioObjectID) };

    CAPropertyAddress theAddress(kAudioHardwarePropertyDeviceForUID);

    UInt32 theSize = sizeof(AudioValueTranslation);

    GetPropertyData(theAddress, 0, NULL, theSize, &theValue);

    return theAnswer;

}

void    CAHALAudioSystemObject::LogBasicDeviceInfo()

{

    UInt32 theNumberDevices = GetNumberAudioDevices();

    CAAutoArrayDelete<AudioObjectID> theDeviceList(theNumberDevices);

    GetAudioDevices(theNumberDevices, theDeviceList);

    DebugMessageN1("CAHALAudioSystemObject::LogBasicDeviceInfo: %d devices", (int)theNumberDevices);

    for(UInt32 theDeviceIndex = 0; theDeviceIndex < theNumberDevices; ++theDeviceIndex)

    {

        char theCString[256];

        UInt32 theCStringSize = sizeof(theCString);

        DebugMessageN1("CAHALAudioSystemObject::LogBasicDeviceInfo: Device %d", (int)theDeviceIndex);

        CAHALAudioDevice theDevice(theDeviceList[theDeviceIndex]);

        DebugMessageN1("CAHALAudioSystemObject::LogBasicDeviceInfo:   Object ID: %d", (int)theDeviceList[theDeviceIndex]);

        CACFString theDeviceName(theDevice.CopyName());

        theCStringSize = sizeof(theCString);

        theDeviceName.GetCString(theCString, theCStringSize);

        DebugMessageN1("CAHALAudioSystemObject::LogBasicDeviceInfo:   Name:      %s", theCString);

        CACFString theDeviceUID(theDevice.CopyDeviceUID());

        theCStringSize = sizeof(theCString);

        theDeviceUID.GetCString(theCString, theCStringSize);

        DebugMessageN1("CAHALAudioSystemObject::LogBasicDeviceInfo:   UID:       %s", theCString);

    }

}

static inline AudioObjectPropertySelector   CAHALAudioSystemObject_CalculateDefaultDeviceProperySelector(bool inIsInput, bool inIsSystem)

{

    AudioObjectPropertySelector theAnswer = kAudioHardwarePropertyDefaultOutputDevice;

    if(inIsInput)

    {

        theAnswer = kAudioHardwarePropertyDefaultInputDevice;

    }

    else if(inIsSystem)

    {

        theAnswer = kAudioHardwarePropertyDefaultSystemOutputDevice;

    }

    return theAnswer;

}

AudioObjectID   CAHALAudioSystemObject::GetDefaultAudioDevice(bool inIsInput, bool inIsSystem) const

{

    AudioObjectID theAnswer = kAudioObjectUnknown;

    CAPropertyAddress theAddress(CAHALAudioSystemObject_CalculateDefaultDeviceProperySelector(inIsInput, inIsSystem));

    UInt32 theSize = sizeof(AudioObjectID);

    GetPropertyData(theAddress, 0, NULL, theSize, &theAnswer);

    return theAnswer;

}

void    CAHALAudioSystemObject::SetDefaultAudioDevice(bool inIsInput, bool inIsSystem, AudioObjectID inNewDefaultDevice)

{

    CAPropertyAddress theAddress(CAHALAudioSystemObject_CalculateDefaultDeviceProperySelector(inIsInput, inIsSystem));

    UInt32 theSize = sizeof(AudioObjectID);

    SetPropertyData(theAddress, 0, NULL, theSize, &inNewDefaultDevice);

}

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;

}