xref: /aosp_15_r20/external/parameter-framework/upstream/parameter/BitParameterBlock.cpp (revision c33452fb792a5495ec310a9626f2638b053af5dd)

/*
 * Copyright (c) 2011-2014, Intel Corporation
 * All rights reserved.
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 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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#include "BitParameterBlock.h"
#include "BitParameterBlockType.h"
#include "ParameterAccessContext.h"
#include "ParameterBlackboard.h"

#define base CInstanceConfigurableElement

using std::string;

CBitParameterBlock::CBitParameterBlock(const string &strName, const CTypeElement *pTypeElement)
    : base(strName, pTypeElement)
{
}

CInstanceConfigurableElement::Type CBitParameterBlock::getType() const
{
    return EBitParameterBlock;
}

// Instantiation, allocation
size_t CBitParameterBlock::getFootPrint() const
{
    return getSize();
}

// Size
size_t CBitParameterBlock::getSize() const
{
    return static_cast<const CBitParameterBlockType *>(getTypeElement())->getSize();
}

// Used for simulation and virtual subsystems
void CBitParameterBlock::setDefaultValues(CParameterAccessContext &parameterAccessContext) const
{
    // Default value is 0 as their is no min bound for bit parameters,
    // thus 0 is always a valid value.
    // BitParameterBlock can be as long a 64 bit, thus an 64 bit long variable
    // is necessary to initialize it.
    uint64_t uiDefaultValue = 0;

    // Write blackboard
    CParameterBlackboard *pBlackboard = parameterAccessContext.getParameterBlackboard();

    // Beware this code works on little endian architectures only!
    pBlackboard->writeInteger(&uiDefaultValue, getSize(),
                              getOffset() - parameterAccessContext.getBaseOffset());
}