Initial commit

engines/lure/memory.cpp

@@ -0,0 +1,103 @@
+/* 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "lure/memory.h"
+#include "common/file.h"
+#include "common/textconsole.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;
+}
+
+void *Memory::alloc(uint32 size) {
+	return 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;
+
+	byte *tmp = (byte *) realloc(_data, size1);
+	if (!tmp)
+		error ("[MemoryBlock::reallocate] Failed reallocating memory block");
+
+	_data = tmp;
+}
+
+} // End of namespace Lure