source: trunk/UPV/GTGeometry/src/GeoSerializer.cpp @ 138

#include "GeoSerializer.h"


namespace Geometry {

    //---------------------------------------------------------------------
        Serializer::Serializer(String name, Mode mode)
                : mMode(mode)
        {
                char *char_mode = 0;
                switch (mMode)
                {
                case READ : 
                        char_mode = "rb"; 
                        break;
                case APPEND:
                        char_mode = "a+b";
                        break;
                case WRITE:
                        char_mode = "wb";
                        break;
                }

                mFile = fopen(name.c_str(),char_mode);
                mSize = 0;
                assert(mFile);
        }

    //---------------------------------------------------------------------
    Serializer::~Serializer()
    {
                fflush(mFile);
                fclose(mFile);
    }

    //---------------------------------------------------------------------
    void Serializer::WriteArray(const float* const pFloat, size_t count)
    {
#       if GEO_ENDIAN == GEO_ENDIAN_BIG
            float *float_to_write = (float *)malloc(sizeof(float) * count);
            memcpy(float_to_write, pFloat, sizeof(float) * count);
            
            flipToLittleEndian(float_to_write, sizeof(float), count);
            writeData(float_to_write, sizeof(float), count);
            
            free(float_to_write);
#       else
            WriteData(pFloat, sizeof(float), count);
#       endif
    }

    //---------------------------------------------------------------------
    void Serializer::WriteArray(const uint16* const pShort, size_t count = 1)
    {
#       if GEO_ENDIAN == GEO_ENDIAN_BIG
            unsigned short *short_to_write = (unsigned short *)malloc(sizeof(unsigned short) * count);
            memcpy(short_to_write, pShort, sizeof(unsigned short) * count);
            
            flipToLittleEndian(short_to_write, sizeof(unsigned short), count);
            WriteData(short_to_write, sizeof(unsigned short), count);
            
            free(short_to_write);
#       else
            WriteData(pShort, sizeof(unsigned short), count);
#       endif
    }
    //---------------------------------------------------------------------
    void Serializer::WriteArray(const uint32* const pInt, size_t count = 1)
    {
#       if GEO_ENDIAN == GEO_ENDIAN_BIG
            unsigned int *int_to_write = (unsigned int *)malloc(sizeof(unsigned int) * count);
            memcpy(int_to_write, pInt, sizeof(unsigned int) * count);
            
            FlipToLittleEndian(int_to_write, sizeof(unsigned int), count);
            WriteData(int_to_write, sizeof(unsigned int), count);
            
            free(int_to_write);
#       else
            WriteData(pInt, sizeof(unsigned int), count);
#       endif
    }

    //---------------------------------------------------------------------
    void Serializer::WriteArray(const bool* const pBool, size_t count = 1)
        {
                //TODO: Apple has problems 
        WriteData(pBool, sizeof(bool), count);
        }
        //---------------------------------------------------------------------
        void Serializer::WriteArray(const Vector3* const pDest, size_t count)
    {
        for(size_t i = 0; i < count; ++i)
                {
                        WriteArray(pDest[i].val,3);
                }
    }
        //---------------------------------------------------------------------
        void Serializer::WriteArray(const Vector2* const pDest, size_t count)
    {
        for(size_t i = 0; i < count; ++i)
                {
                        WriteArray(pDest[i].val,2);
                }
    }

    //---------------------------------------------------------------------
    void Serializer::WriteData(const void* const buf, size_t size, size_t count)
    {
                size_t wcount = fwrite((void* const)buf, size, count, mFile);
                assert(wcount == count);
                mSize += size*count;
    }

        //---------------------------------------------------------------------
        void Serializer::ReadData(void *pDest, size_t size, size_t count)
        {
                size_t rcount = fread(pDest,size,count,mFile);
                assert(rcount == count);
                mSize += size*count;
        };
 
     //---------------------------------------------------------------------
    void Serializer::ReadArray(bool *pDest, size_t count)
    {
                //TODO:: Apple has problmes with bools
        ReadData(pDest,sizeof(bool), count);
    }
        
    //---------------------------------------------------------------------
    void Serializer::ReadArray(float *pDest, size_t count)
    {
        ReadData(pDest, sizeof(float), count);
        FlipFromLittleEndian(pDest, sizeof(float), count);
    }
    //---------------------------------------------------------------------
    void Serializer::ReadArray(unsigned short *pDest, size_t count)
    {
        ReadData(pDest, sizeof(unsigned short), count);
        FlipFromLittleEndian(pDest, sizeof(unsigned short), count);
    }
    //---------------------------------------------------------------------
    void Serializer::ReadArray(unsigned int *pDest, size_t count)
    {
        ReadData(pDest, sizeof(unsigned int), count);
        FlipFromLittleEndian(pDest, sizeof(unsigned int), count);
    }
    //---------------------------------------------------------------------
    void Serializer::ReadArray(Vector3 *pDest, size_t count)
    {
        for(size_t i = 0; i < count; ++i)
                {
                        ReadArray(pDest[i].val,3);
                }
    }
        //---------------------------------------------------------------------
        void Serializer::ReadArray(Vector2 *pDest, size_t count)
    {
        for(size_t i = 0; i < count; ++i)
                {
                        ReadArray(pDest[i].val,2);
                }
    }


//---------------------------------------------------------------------


    void Serializer::FlipToLittleEndian(void *pData, size_t size, size_t count)
    {
#       if GEO_ENDIAN == GEO_ENDIAN_BIG
        FlipEndian(pData, size, count);
#       endif
    }
    
    void Serializer::FlipFromLittleEndian(void *pData, size_t size, size_t count)
    {
#       if GEO_ENDIAN == GEO_ENDIAN_BIG
        FlipEndian(pData, size, count);
#       endif
    }
    
    void Serializer::FlipEndian(void *pData, size_t size, size_t count)
    {
        for(unsigned int index = 0; index < count; index++)
        {
            FlipEndian((void *)((char*)pData + (index * size)), size);
        }
    }
    
    void Serializer::FlipEndian(void *pData, size_t size)
    {
        char swapByte;
        for(unsigned int byteIndex = 0; byteIndex < size/2; byteIndex++)
        {
            swapByte = *((char *)pData + byteIndex);
            *((char *)pData + byteIndex) = *((char *)pData + size - byteIndex - 1);
            *((char *)pData + size - byteIndex - 1) = swapByte;
        }
    }
    
}