audio samples and cleanup ADATA_XXX macros. This allows easilly
switching to 24 bit fixed point arithmetic by simply redefining
the adata_t typedef to int and updating ADATA_XXX macros. No
object change.
possibly blocked streams are processed. If during this phase the end
of another stream is reached then stop the processing because the job
will be already finished by the second stream. Otherwise we may end up
running a destroyed stream.
help from Edward Wandasiewicz <w13ntd at googlemail.com>, thanks
