Exposing frame buffer array

Would you consider exposing the frame buffer array either by exposing av_image_fill_pointers instead of always allocating an array, or by making it available for writing as a numpy array?

I understand that you would like to align the buffer to 16 (bytes???) but some applications may have already worked to ensure that their data is aligned to better than that.

Finally, it would be good if some precessing could share that buffer and make it an "output" buffer.