Differential D2716 Diff 9122 extern/audaspace/src/util/Buffer.cpp

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extern/audaspace/src/util/Buffer.cpp

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				/*******************************************************************************
				* Copyright 2009-2016 Jörg Müller
				*
				* Licensed under the Apache License, Version 2.0 (the "License");
				* you may not use this file except in compliance with the License.
				* You may obtain a copy of the License at
				*
				* http://www.apache.org/licenses/LICENSE-2.0
				*
				* Unless required by applicable law or agreed to in writing, software
				* distributed under the License is distributed on an "AS IS" BASIS,
				* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
				* See the License for the specific language governing permissions and
				* limitations under the License.
				******************************************************************************/

				#include "util/Buffer.h"

				#include <algorithm>
				#include <cstring>
				#include <cstdlib>

				#define ALIGNMENT 32
				#define ALIGN(a) (a + ALIGNMENT - ((long long)a & (ALIGNMENT-1)))

				AUD_NAMESPACE_BEGIN

				Buffer::Buffer(int size)
				{
				m_size = size;
				m_buffer = (data_t*) std::malloc(size + ALIGNMENT);
				}

				Buffer::~Buffer()
				{
				std::free(m_buffer);
				}

				sample_t* Buffer::getBuffer() const
				{
				return (sample_t*) ALIGN(m_buffer);
				}

				int Buffer::getSize() const
				{
				return m_size;
				}

				void Buffer::resize(int size, bool keep)
				{
				if(keep)
				{
				data_t* buffer = (data_t*) std::malloc(size + ALIGNMENT);

				std::memcpy(ALIGN(buffer), ALIGN(m_buffer), std::min(size, m_size));

				std::free(m_buffer);
				m_buffer = buffer;
				}
				else
				m_buffer = (data_t*) std::realloc(m_buffer, size + ALIGNMENT);

				m_size = size;
				}

				void Buffer::assureSize(int size, bool keep)
				{
				if(m_size < size)
				resize(size, keep);
				}

				AUD_NAMESPACE_END