| // |
| // Copyright (c) 2014 The ANGLE Project Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| |
| #include "libGLESv2/renderer/d3d/MemoryBuffer.h" |
| #include "common/debug.h" |
| |
| #include <algorithm> |
| #include <cstdlib> |
| |
| namespace rx |
| { |
| |
| MemoryBuffer::MemoryBuffer() |
| : mSize(0), |
| mData(NULL) |
| { |
| } |
| |
| MemoryBuffer::~MemoryBuffer() |
| { |
| free(mData); |
| mData = NULL; |
| } |
| |
| bool MemoryBuffer::resize(size_t size) |
| { |
| if (size == 0) |
| { |
| free(mData); |
| mData = NULL; |
| mSize = 0; |
| } |
| else |
| { |
| uint8_t *newMemory = reinterpret_cast<uint8_t*>(malloc(sizeof(uint8_t) * size)); |
| if (newMemory == NULL) |
| { |
| return false; |
| } |
| |
| if (mData) |
| { |
| // Copy the intersection of the old data and the new data |
| std::copy(mData, mData + std::min(mSize, size), newMemory); |
| free(mData); |
| } |
| |
| mData = newMemory; |
| mSize = size; |
| } |
| |
| return true; |
| } |
| |
| size_t MemoryBuffer::size() const |
| { |
| return mSize; |
| } |
| |
| const uint8_t *MemoryBuffer::data() const |
| { |
| return mData; |
| } |
| |
| uint8_t *MemoryBuffer::data() |
| { |
| ASSERT(mData); |
| return mData; |
| } |
| |
| } |