code: function amf0decSArray(buf) {
      var a = [];
      var len = 5;
      var ret;
      for (var count = buf.readUInt32BE(1); count; count--) {
          ret = amf0DecodeOne(buf.slice(len));
          a.push(ret.value);
          len += ret.len;
      }
      return { len: len, value: amf0markSArray(a) }
  }
docs: AMF0 Decode Strict Array
  @param buf
  @returns {{len: number, value: Array}}