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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#include "lure/memory.h"
#include "common/file.h"
namespace Lure {
MemoryBlock *Memory::allocate(uint32 size) {
MemoryBlock *block = new MemoryBlock(size);
return block;
}
MemoryBlock *Memory::duplicate(MemoryBlock *src) {
MemoryBlock *block = new MemoryBlock(src);
return block;
}
uint8 *Memory::alloc(uint32 size) {
return (uint8 *) malloc(size);
}
void Memory::dealloc(void *block) {
free(block);
}
/*--------------------------------------------------------------------------*/
MemoryBlock::MemoryBlock(uint32 size1) {
_data = (uint8 *) malloc(size1);
if (!_data) error ("Failed allocating memory block");
_size = size1;
}
MemoryBlock::MemoryBlock(MemoryBlock *src) {
_size = src->size();
_data = (uint8 *) malloc(_size);
if (!_data) error ("Failed allocating memory block");
memcpy(_data, src->data(), _size);
}
MemoryBlock::~MemoryBlock() {
free(_data);
}
void MemoryBlock::empty() {
::memset(_data, 0, _size);
}
void MemoryBlock::setBytes(int c, size_t startIndex, size_t num) {
byte *p = _data + startIndex;
::memset(p, c, num);
}
void MemoryBlock::copyFrom(MemoryBlock *src) {
copyFrom(src, 0, 0, src->size());
}
void MemoryBlock::copyFrom(MemoryBlock *src, uint32 srcPos, uint32 destPos, uint32 srcLen) {
if ((srcPos + srcLen > src->size()) || (destPos + srcLen > size()))
error("Memory block overrun in block copy");
uint8 *pDest = _data + destPos;
uint8 *pSrc = src->data() + srcPos;
memcpy(pDest, pSrc, srcLen);
}
void MemoryBlock::copyFrom(const byte *src, uint32 srcPos, uint32 destPos, uint32 srcLen) {
byte *pDest = _data + destPos;
const byte *pSrc = src + srcPos;
memcpy(pDest, pSrc, srcLen);
}
void MemoryBlock::reallocate(uint32 size1) {
_size = size1;
_data = (byte *) realloc(_data, size1);
if (!_data) error ("Failed reallocating memory block");
}
} // end of namespace Lure
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