love2d.love/src/modules/graphics/StreamBuffer.cpp

/**
 * Copyright (c) 2006-2016 LOVE Development Team
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 *    claim that you wrote the original software. If you use this software
 *    in a product, an acknowledgment in the product documentation would be
 *    appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 **/

#include "StreamBuffer.h"
#include "common/Exception.h"

namespace love
{
namespace graphics
{

StreamBuffer::StreamBuffer(Mode mode, size_t size)
	: data(nullptr)
	, offset(0)
	, totalSize(size)
	, mode(mode)
{
	setSize(size);
}

StreamBuffer::~StreamBuffer()
{
		delete[] data;
}

void *StreamBuffer::getData() const
{
	return data;
}

void *StreamBuffer::getOffsetData() const
{
	return data + offset;
}

void StreamBuffer::incrementOffset(size_t amount)
{
	offset += amount;
}

void StreamBuffer::resetOffset()
{
	offset = 0;
}

void StreamBuffer::setSize(size_t size)
{
	delete[] data;

	try
	{
		data = new uint8[size];
	}
	catch (std::exception &)
	{
		throw love::Exception("Out of memory.");
	}

	this->totalSize = size;
}

} // graphics
} // love