// Version:    <1.0>

//

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// Copyright ( C ) 2008 Apple Inc. All Rights Reserved.

//

////////////////////////////////////////////////////////////////////////////////////////////////////

#include "memory_buffer.h"

/////////////////////////////////////////////////////////////////////////////

MemoryBuffer::MemoryBuffer() :

    m_uiElementSizeInBytes(0),

    m_uiElementCount(0),

    m_pvData(0)

{

    // EMPTY!

}

MemoryBuffer::~MemoryBuffer()

{

    if(m_pvData)

        destroy();

}

bool 

MemoryBuffer::allocate(

    uint uiElementSizeInBytes, 

    uint uiElementCount,

    bool bSetToZero)

{

    uint uiTotalBytes = uiElementSizeInBytes * uiElementCount;

    if(uiTotalBytes * uiElementCount > getTotalSizeInBytes())

        destroy();

    m_pvData = (void*) new char[uiTotalBytes];

    if(m_pvData == 0)

        return false;

    if(bSetToZero)

        memset(m_pvData, 0, uiTotalBytes);

    m_uiElementSizeInBytes = uiElementSizeInBytes;

    m_uiElementCount = uiElementCount;

    return true;

}

void

MemoryBuffer::destroy()

{

    if(m_pvData)

    {

        char* pcData = (char*)m_pvData;

        delete [] pcData;

    }

    m_uiElementSizeInBytes = 0;

    m_uiElementCount = 0;

    m_pvData = 0;

}

void

MemoryBuffer::printFloatData(uint uiComponents)

{

    if(m_pvData == 0)

        return;

    float* pfData = (float*) m_pvData;

    for(uint i = 0; i < m_uiElementCount; i++)

    {

        printf("[%d] ", i);

        for(uint c = 0; c < uiComponents; c++)

        {

            printf("%3.2f ", *pfData++);

        }

        printf("\n");

    }

}

void

MemoryBuffer::printUIntData(uint uiComponents)

{

    if(m_pvData == 0)

        return;

    uint* puiData = (uint*) m_pvData;

    for(uint i = 0; i < m_uiElementCount; i++)

    {

        printf("[%u] ", i);

        for(uint c = 0; c < uiComponents; c++)

        {

            printf("%u ", *puiData++);

        }

        printf("\n");

    }

}

/////////////////////////////////////////////////////////////////////////////