Little-Endian to Big-Endian

Hello

 

I am developing a DirectShow filter for creating an encoder. My problem is that the encoders nature is such that

it should receive an sound buffer in big-endian format, but what I receive is in little endian format.

 

So I have a sound buffer, which before passing downstream I have to convert to big-endian. What I have done is as follows:

 

// lAccumulatedData is the sound sample size.

            for (long l = 0; l < lAccumulatedData; l += 2)

            {

                  WORD wSample = MAKEWORD (*(pSoundData + l), *(pSoundData + l + 1));

                  BYTE by1 = LOBYTE (wSample);

                  BYTE by2 = HIBYTE (wSample);

                  *(pSoundData + l) = by2;

                  *(pSoundData + l + 1) = by1; 

            }

 

It works but, I have to run this loop each time I receive an audio sample, which slows down the

encoding process. What according to u’ll is the optimized way of doing it ?

 

Please help

Bhavna