#define kMaxStringSize 1024

// CopyMyAudioDriverUID
// ÉhÉâÉCÉoÇà UID Çå©Ç¬ÇØǃÅA
// âï˙Ç∑Ç◊Ç´ CFString Ç…ï‘Ç∑
OSStatus CopyMyAudioDriverUID(CFStringRef *outUID)
{
    UInt32          theSize;
    char            theString[kMaxStringSize];
    UInt32          theNumberDevices;
    AudioDeviceID   *theDeviceList = NULL;
    UInt32          theDeviceIndex;
    CFStringRef     theCFString = NULL;
    OSStatus        theStatus = noErr;

    // DZÇÍÇ™ÉhÉâÉCÉo
    const char      *nameString = "BrownSound audio controller";
    const char      *manufacturerString = "Eddie";

    *outUID = NULL;

    // ÉfÉoÉCÉXÉäÉXÉgÇÃÉTÉCÉY
    theSize = 0;
    theStatus = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices, &theSize, NULL);
    if (theStatus) goto done;

    theNumberDevices = theSize / sizeof(AudioDeviceID);

    // ÉfÉoÉCÉXÉäÉXÉgÇäÑÇËìñǃÇÈ
    theDeviceList = (AudioDeviceID*)malloc(theNumberDevices * sizeof(AudioDeviceID));

    // ÉfÉoÉCÉXÉäÉXÉgÇéÊìæÇ∑ÇÈ
    theSize = theNumberDevices * sizeof(AudioDeviceID);
    theStatus = AudioHardwareGetProperty(kAudioHardwarePropertyDevices, &theSize, theDeviceList);

    // ÉfÉoÉCÉXÉäÉXÉgëSëÃÇ…ëŒÇµÇƒîΩïúèàóùÇçsÇ¢ÅA
    // ÉfÉoÉCÉXÇå©Ç¬ÇØǃ UID Çï‘Ç∑
    for(theDeviceIndex = 0; theDeviceIndex < theNumberDevices; ++theDeviceIndex)
    {
        // ñºëOÇéÊìæÇ∑ÇÈ
        theSize = kMaxStringSize;
        theStatus = AudioDeviceGetProperty(theDeviceList[theDeviceIndex],
                                      0, 0, kAudioDevicePropertyDeviceName, &theSize, theString);
        if (theStatus) goto done;

        // àÍívǵǃǢÇÈÇ©ÅH
        if (strncmp(theString, nameString, strlen(nameString)) == 0) {

            // ÉÅÅ[ÉJÅ[èÓïÒÇéÊìæÇ∑ÇÈ
            theSize = kMaxStringSize;
            theStatus = AudioDeviceGetProperty(theDeviceList[theDeviceIndex], 0, 0,
                                     kAudioDevicePropertyDeviceManufacturer, &theSize, theString);
            if (theStatus) goto done;

            // ñ{ìñÇ…àÍívǵǃǢÇÈÇ©ÅH
            if (strncmp(theString, manufacturerString, strlen(manufacturerString)) == 0) {
                // ÉfÉoÉCÉXÇà UID ÇéÊìæÇ∑ÇÈ
                theSize = sizeof(CFStringRef);
                theStatus = AudioDeviceGetProperty(theDeviceList[theDeviceIndex],
                                 0, 0, kAudioDevicePropertyDeviceUID, &theSize, &theCFString);
                if (theStatus) goto done;
                *outUID = theCFString;
                break;
            }
        }
    }

    // ÉfÉoÉCÉXÇÕå©Ç¬ÇÁǻǢ
    if (NULL == *outUID) theStatus = badComponentType;

done:
    // ÉfÉoÉCÉXÉäÉXÉgÇâï˙Ç∑ÇÈ
    if (theDeviceList) free(theDeviceList);

    return theStatus;
}

// QTVideoOutputGetIndSoundOutput
// ÉCÉìÉfÉbÉNÉXÉpÉâÉÅÉ^Ç≈éwíËÇ≥ÇÍÇΩÉrÉfÉIèoóÕÉRÉìÉ|Å[ÉlÉìÉgÇÃ
// ÉTÉEÉìÉhèoóÕÉRÉìÉ|Å[ÉlÉìÉgÇï‘Ç∑ÅBç≈èâÇÃÉRÉìÉ|Å[ÉlÉìÉgÇÃ
// ÉCÉìÉfÉbÉNÉXÇÕ 1
pascal ComponentResult MyVOut_GetIndSoundOutput(MyVOutGlobalsPtr storage,
                                                 long index, Component *outputComponent)
{
    Component            c = 0;
    ComponentDescription cd = { kSoundOutputDeviceType, kHALCustomComponentSubType, 0, 0, 0 };
    CFStringRef          myUID = NULL;
    CFStringRef          halUID = NULL;
    SMStatus             ignore;
    ComponentResult      err;

    *outputComponent = NULL;

    // ÉTÉEÉìÉhèoóÕÉRÉìÉ|Å[ÉlÉìÉgÇÕ 1 ǬǵǩǻǢÇΩÇfl
    // ÉCÉìÉfÉbÉNÉXÇ™ 1 à»äOÇÃèÍçáÇÕÉGÉâÅ[ÇΔÇ»ÇÈ
    if (index != 1) return paramErr;

    // Ç∑Ç≈DždžÇÈÇΩÇflÅAèIóπ
    if (storage->soundOutput) {
        *outputComponent = storage->soundOutput;
        return noErr;
    }

    // core audio ÇégǡǃÅAÉIÅ[ÉfÉBÉIÉhÉâÉCÉo ID Çå©Ç¬ÇØÇÈ
    err = CopyMyAudioDriverUID(&myUID);
    if (err) goto bail;

    // Sound Manager Çà¿âøÇ»ï˚ñ@Ç≈èâä˙âªÇ∑ÇÈÅBSound Manager ÇÕÉVÉXÉeÉÄè„ÇÃ
    // Core Audio ÉhÉâÉCÉoÇ≤ÇΔÇ…ÉTÉEÉìÉhèoóÕÉRÉìÉ|Å[ÉlÉìÉgÇçáê¨Ç∑ÇÈÇΩÇflÅA
    // DZÇÃèàóùÇ™ïKóv

    SndManagerStatus(sizeof(SMStatus), &ignore);

    // çáê¨Ç≥ÇÍÇΩÉTÉEÉìÉhèoóÕÉRÉìÉ|Å[ÉlÉìÉgÇå©Ç¬ÇØÇÈ
    while (c = FindNextComponent(c, &cd)) {
        // ï‘Ç≥ÇÍÇΩ CFString Çâï˙ǵǻǢ
        err = SoundComponentGetInfo(c, 0, siHALAudioDeviceUniqueID, &halUID);
        if (err) goto bail;

        // àÍívÇ∑ÇÍÇŒê¨å˜
        if (CFEqual(myUID, halUID)) {
            *outputComponent = c;
            storage->soundOutput = c;
            break;
        }
    }

    // ëŒâûÇ∑ÇÈ sDev Ç™å©Ç¬Ç©ÇÁǻǢ
    if (NULL == *outputComponent) err = badComponentType;

bail:
    if (myUID) CFRelease(myUID);

    return err;
}                

ÉäÉXÉg 1.