Question

The code below is storing a pointer of tmpbuffer. How would I store the tmpbuffer itself and not a pointer in an array like fwBuffer and not use malloc / free?

short int *fwBuffer[1000000];

size =  sizeof(short int)*length*inchannels;
short int *tmpbuffer = (short int*)malloc(size);

int count = 0;
for (count = 0; count < length*inchannels; count++)
{
    tmpbuffer[count] = (short int) (inbuffer[count]);
}

fwBuffer[saveBufferCount] = tmpbuffer;

Answer 1

Are you looking to do something like this? This aggregates all the stored buffers into a single buffer. Note that I do have a separate buffer to store an index; either you may just not need this, or you could in theory pack it into a location in the fwBuffer array.

// Max number of data chunks
const unsigned maxBuffers = 1024;
// All the data stored here.
short int fwBuffer[1000000];
// how many data chunks we have
unsigned saveBufferCount = 0;
// Index to find each data chunk
// bufferIndex[saveBufferCount] points to where the next buffer will be placed (i.e. _after_ all the stored data).
short int* bufferIndex[maxBuffers] = {fwBuffer};

void storeBuffer(unsigned length, unsigned inchannels, short int* inbuffer)
{    
        short int *bufferIterator = bufferIndex[saveBufferCount];
        // Could do a memcpy here.
        int count = 0;
        for (count = 0; count < length*inchannels; count++)
        {
            *bufferIterator++ = inbuffer[count];
        }       
        ++saveBufferCount;
        bufferIndex[saveBufferCount] = bufferIterator;
}