cFileSource.cpp

// Copyright (c) 2008-2011 Raynaldo (Wildicv) Rivera, Joshua (Dark_Kilauea) Jones, Murat (wolfmanfx) Sari
// This file is part of the "cAudio Engine"
// For conditions of distribution and use, see copyright notice in cAudio.h
 
#include "cFileSource.h"
#include "cUtils.h"
 
#if CAUDIO_COMPILE_WITH_FILE_SOURCE == 1
 
#include <cstring>
 
namespace cAudio
{
 
cFileSource::cFileSource(const char* filename) : pFile(NULL), Valid(false), Filesize(0)
{
        cAudioString safeFilename = fromUTF8(filename);
    if(safeFilename.length() != 0)
    {
        pFile = cfopen(safeFilename, "rb");
                if(pFile)
                        Valid = true;
    }
 
    if(Valid)
    {
        fseek(pFile, 0, SEEK_END);
        Filesize = ftell(pFile);
        fseek(pFile, 0, SEEK_SET);
    }
}
 
cFileSource::~cFileSource()
{
        if(pFile)
                fclose(pFile);
}
 
bool cFileSource::isValid()
{
    return Valid;
}
 
int cFileSource::getCurrentPos()
{
    return ftell(pFile);
}
 
int cFileSource::getSize()
{
    return Filesize;
}
 
int cFileSource::read(void* output, int size)
{
        return fread(output, sizeof(char), size, pFile);
}
 
bool cFileSource::seek(int amount, bool relative)
{
    if(relative == true)
    {
        int oldamount = ftell(pFile);
        fseek(pFile, amount, SEEK_CUR);
 
        //check against the absolute position
        if(oldamount+amount != ftell(pFile))
            return false;
    }
    else
    {
        fseek(pFile, amount, SEEK_SET);
        if(amount != ftell(pFile))
            return false;
    }
 
    return true;
}
 
};
 
#endif