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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.
******************************************************************************/
#pragma once
/**
* @file Buffer.h
* @ingroup util
* The Buffer class.
*/
#include "Audaspace.h"
AUD_NAMESPACE_BEGIN
/**
* This class is a simple buffer in RAM which is 32 Byte aligned and provides
* resize functionality.
*/
class AUD_API Buffer
{
private:
/// The size of the buffer in bytes.
long long m_size;
/// The pointer to the buffer memory.
data_t* m_buffer;
// delete copy constructor and operator=
Buffer(const Buffer&) = delete;
Buffer& operator=(const Buffer&) = delete;
public:
/**
* Creates a new buffer.
* \param size The size of the buffer in bytes.
*/
Buffer(long long size = 0);
/**
* Destroys the buffer.
*/
~Buffer();
/**
* Returns the pointer to the buffer in memory.
*/
sample_t* getBuffer() const;
/**
* Returns the size of the buffer in bytes.
*/
long long getSize() const;
/**
* Resizes the buffer.
* \param size The new size of the buffer, measured in bytes.
* \param keep Whether to keep the old data. If the new buffer is smaller,
* the data at the end will be lost.
*/
void resize(long long size, bool keep = false);
/**
* Makes sure the buffer has a minimum size.
* If size is >= current size, nothing will happen.
* Otherwise the buffer is resized with keep as parameter.
* \param size The new minimum size of the buffer, measured in bytes.
* \param keep Whether to keep the old data. If the new buffer is smaller,
* the data at the end will be lost.
*/
void assureSize(long long size, bool keep = false);
};
AUD_NAMESPACE_END
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