Accessing Class Member Vars From Flash?

Question

Hi,
I'm writing an audio intensive application that requires a lot of data manipulation on the Alchemy side and I ran into a wall with my approach.
I'm using C++ to initialize a Class and populate its members in the "Alchemy-side" of the project. However, to keep things tidy and fast, I wish to write some audio data to a Float Array member of the class directly from Flash to avoid redundant copying.
If this seems strange, I have done it successfully for a Float Array defined in the main C (or C++) file and passed a pointer back to AS3 so that the "shared memory" could find the precise location in memory and read/write:
Setting up shared memory:
               var ns:Namespace = new Namespace("cmodule.cppPackage");     
               cRAM = (ns::gstate).ds;     
               libLoader = new CLibInit();
               lib = libLoader.init();     
where cRAM is a byteArray I used and is associated with the shared memory. cRam,position = DataPtr would get me access to the data I want
However, this approach hasn't proven fruitful for Data Arrays located within a class. Here is a quick look at my class implementation:
class AudioChannel {
private:
     int fs, frameSize;
     bool fftComputed;
public:
     float *audioFrame, *fftFrame;
     int *intArr;
     int stuff;
     AudioChannel();                                             //default constructor
     ~AudioChannel();
     void initChannel(int fSize, int sampleRate);     //initializes the paramters
     int getSampleRate();
     int getFrameSize();
the audioFrame array is allocated and initialized in the "intiChannel" method, and it has public access. From the main .cpp file I simply return &(ch.audioFrame), (ch is the object instance) as an AS3_Ptr so I can use that to find the data.
The way in which I attempt to access the values in AS3 is as follows:
               cRAM.position = chAudPtr;
               for(var i:int = 0; i < 25; i++ ) {
                    cRAM.position = chAudPtr + sizeofFloat*i;
                    var tempVal:int = cRAM.readFloat();
                    trace('the tempVal is : ' + tempVal);
The problem is, that the function returns the wrong values. chAudPtr is the address for the "audioFrame" member in the C++ class I defined earlier and the initChannelMethod initialized the first 25 values to 0 through 24. I confirmed this with trace statements in the C code. Furthermore, when I try to write to this memory, I receive:
RangeError: Error #1506: The specified range is invalid
Is this some sort of limitation of Alchemy with data structures (classes, structs, etc)?. The strange thing is I can read and write the primitive members of the class with no issues (i.e. "stuff, fs, frameSize") using the above methods. But I can't seem to get it to work right with arrays in the object.
Any tips are appreciated, I'm trying to create something really clean and self-contained.
Thanks.

Answer 1

sorry about the &nbsp. you can ignore that...some weird formatting thing for the code-style formatting....