97 lines
1.6 KiB
C++
97 lines
1.6 KiB
C++
// Copyright (c) 2008-2011 Raynaldo (Wildicv) Rivera, Joshua (Dark_Kilauea) Jones, Murat (wolfmanfx) Sari
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// This file is part of the "cAudio Engine"
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// For conditions of distribution and use, see copyright notice in cAudio.h
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#include "cMemorySource.h"
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#include <cstring>
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namespace cAudio
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{
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cMemorySource::cMemorySource(const void* data, int size, bool copy) : Data(NULL), Size(0), Valid(false), Pos(0)
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{
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if(data && size > 0)
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{
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Size = size;
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if(copy)
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{
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Data = (char*)CAUDIO_MALLOC(Size);
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if(Data)
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memcpy(Data, data, Size);
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}
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else
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{
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Data = (char*)data;
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}
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if(Data)
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Valid = true;
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}
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}
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cMemorySource::~cMemorySource()
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{
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CAUDIO_FREE(Data);
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}
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bool cMemorySource::isValid()
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{
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return Valid;
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}
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int cMemorySource::getCurrentPos()
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{
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return Pos;
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}
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int cMemorySource::getSize()
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{
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return Size;
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}
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int cMemorySource::read(void* output, int size)
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{
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//memset(output, 0, size);
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if(Pos+size <= Size)
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{
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memcpy(output, Data+Pos, size);
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Pos += size;
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return size;
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}
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else
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{
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int extra = (Pos+size) - Size;
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int copied = size - extra;
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memcpy(output, Data+Pos, copied);
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Pos = Size;
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return copied;
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}
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}
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bool cMemorySource::seek(int amount, bool relative)
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{
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if(relative)
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{
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Pos += amount;
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if(Pos > Size)
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{
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Pos = Size;
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return false;
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}
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}
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else
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{
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Pos = amount;
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if(Pos > Size)
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{
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Pos = Size;
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return false;
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}
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}
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return true;
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}
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};
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