fmt2str
fmt2str(dp->play.formats, sizeof(dp->play.formats),
fmt2str(dp->rec.formats, sizeof(dp->rec.formats),
fmt2str(dp->play.format, sizeof(dp->play.format),
fmt2str(dp->rec.format, sizeof(dp->rec.format),
fmt2str(ch->format, sizeof(ch->format), NV(number, FORMAT));
fmt2str(ch->hwbuf.format, sizeof(ch->hwbuf.format),
fmt2str(ch->swbuf.format, sizeof(ch->swbuf.format),