void MyPropertyListenerProc(void						*inUserData,
							AudioFileStreamID			inAudioFileStream,
							AudioFileStreamPropertyID	inPropertyID,
                            UInt32                      *ioFlags) {
    BMHttpAudioStreamManager *manager = (__bridge BMHttpAudioStreamManager*) inUserData;
    [manager myPropertyListenerProcForStreamID:inAudioFileStream forPropertyID:inPropertyID forIOFlags:ioFlags];
}

- (void) myPropertyListenerProcForStreamID:(AudioFileStreamID) inAudioFileStream
                       forPropertyID:(AudioFileStreamPropertyID) inPropertyID
                          forIOFlags:(UInt32 *) ioFlags {
    // this is called by audio file stream when it finds property values
        OSStatus err = noErr;
    printf("found property '%c%c%c%c'\n", (char)(inPropertyID>>24)&255, (char)(inPropertyID>>16)&255, (char)(inPropertyID>>8)&255, (char)inPropertyID&255);
    
    switch (inPropertyID) {
        case kAudioFileStreamProperty_ReadyToProducePackets:{
            // the file stream parser is now ready to produce audio packets.
            // get the stream format.
            AudioStreamBasicDescription asbd;
            UInt32 asbdSize = sizeof(asbd);
            err = AudioFileStreamGetProperty(inAudioFileStream, kAudioFileStreamProperty_DataFormat, &asbdSize, &asbd);
            if (err) {
                PRINTERROR("get kAudioFileStreamProperty_DataFormat");
                _audioData->failed = true;
                return;
            }
            
            // create the audio queue
            err = AudioQueueNewOutput(&asbd, MyAudioQueueOutputCallback, (__bridge void *)(self), NULL, NULL, 0, &(_audioData->audioQueue));
            if (err) { PRINTERROR("AudioQueueNewOutput");
#warning ERROR 1718449215 is printed here: kAudioFormatUnsupportedDataFormatError
                _audioData->failed = true;
                return;
            }
            
            // allocate audio queue buffers
            for (unsigned int i = 0; i < kNumAQBufs; ++i) {
                err = AudioQueueAllocateBuffer(_audioData->audioQueue, kAQBufSize, &_audioData->audioQueueBuffer[i]);
                if (err) { PRINTERROR("AudioQueueAllocateBuffer");
                    _audioData->failed = true;
                    break;
                }
            }

            // get the cookie size
            UInt32 cookieSize;
            Boolean writable;
            err = AudioFileStreamGetPropertyInfo(inAudioFileStream, kAudioFileStreamProperty_MagicCookieData, &cookieSize, &writable);
            if (err) {
                PRINTERROR("ERROR: info kAudioFileStreamProperty_MagicCookieData");
                NSLog(@"Error %@ occured, with code %d", [self checkstatus:err], err);
                return;
            }
            printf("cookieSize %d\n", (unsigned int)cookieSize);
            
            // get the cookie data
            void* cookieData = calloc(1, cookieSize);
            err = AudioFileStreamGetProperty(inAudioFileStream, kAudioFileStreamProperty_MagicCookieData, &cookieSize, cookieData);
            if (err == noErr) {
                PRINTERROR("get kAudioFileStreamProperty_MagicCookieData");
                NSLog(@"%@", [self checkstatus:err]);
                free(cookieData);
                return;
            }
            
            // set the cookie on the queue.
            err = AudioQueueSetProperty(_audioData->audioQueue, kAudioQueueProperty_MagicCookie, cookieData, cookieSize);
            free(cookieData);
            if (err) {
                PRINTERROR("set kAudioQueueProperty_MagicCookie");
                NSLog(@"%@", [self checkstatus:err]);
                return;
            }
            
            // listen for kAudioQueueProperty_IsRunning
            err = AudioQueueAddPropertyListener(_audioData->audioQueue, kAudioQueueProperty_IsRunning, MyAudioQueueIsRunningCallback, _audioData);
            if (err) { PRINTERROR("AudioQueueAddPropertyListener");
                NSLog(@"%@", [self checkstatus:err]);
                _audioData->failed = true;
                break;
            }
            
            
        }
        case kAudioFileStreamProperty_DataOffset:{
            //            if (inPropertyID == kAudioFileStreamProperty_DataOffset) {
            SInt64 offset;
            UInt32 offsetSize = sizeof(offset);
            
            err = AudioFileStreamGetProperty(inAudioFileStream,
                                             kAudioFileStreamProperty_DataOffset,
                                             &offsetSize,
                                             &offset);
            if (dataOffset == 0) {
                dataOffset = offset;
            }
            else {
                NSLog(@"offset");
            }
            
            if (err)
                NSLog(@"get kAudioFileStreamProperty_DataOffset failed: %d", err);
            break;
        }
        case kAudioFileStreamProperty_DataFormat:
        case kAudioFileStreamProperty_FileFormat:
            break;
            
        default:
        {
            /*NSLog(@"Audio stream unhandled property change: %c%c%c%c",
             (propertyID>>24)&255,
             (propertyID>>16)&255,
             (propertyID>>8)&255,
             propertyID&255);*/
        }
    }
}