abuf_rgetblk
unsigned char *abuf_rgetblk(struct abuf *, int *);
data = abuf_rgetblk(&s->buf, &count);
idata = (adata_t *)abuf_rgetblk(&s->buf, &len);
unsigned char *abuf_rgetblk(struct abuf *, int *);
idata = (adata_t *)abuf_rgetblk(&s->mix.buf, &icount);
data = abuf_rgetblk(&ep->obuf, &count);
data = abuf_rgetblk(&f->slot->sub.buf, &count);
data = abuf_rgetblk(&f->midi->obuf, &count);