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95 lines
2.9 KiB
C++
95 lines
2.9 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library - "Jules' Utility Class Extensions"
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Copyright 2004-10 by Raw Material Software Ltd.
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------------------------------------------------------------------------------
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JUCE can be redistributed and/or modified under the terms of the GNU General
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Public License (Version 2), as published by the Free Software Foundation.
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A copy of the license is included in the JUCE distribution, or can be found
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online at www.gnu.org/licenses.
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.rawmaterialsoftware.com/juce for more information.
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==============================================================================
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*/
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#include "../../core/juce_StandardHeader.h"
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BEGIN_JUCE_NAMESPACE
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#include "juce_MemoryInputStream.h"
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//==============================================================================
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MemoryInputStream::MemoryInputStream (const void* const sourceData,
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const size_t sourceDataSize,
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const bool keepInternalCopy)
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: data (static_cast <const char*> (sourceData)),
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dataSize (sourceDataSize),
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position (0)
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{
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if (keepInternalCopy)
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{
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internalCopy.append (data, sourceDataSize);
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data = static_cast <const char*> (internalCopy.getData());
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}
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}
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MemoryInputStream::MemoryInputStream (const MemoryBlock& sourceData,
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const bool keepInternalCopy)
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: data (static_cast <const char*> (sourceData.getData())),
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dataSize (sourceData.getSize()),
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position (0)
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{
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if (keepInternalCopy)
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{
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internalCopy = sourceData;
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data = static_cast <const char*> (internalCopy.getData());
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}
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}
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MemoryInputStream::~MemoryInputStream()
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{
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}
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int64 MemoryInputStream::getTotalLength()
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{
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return dataSize;
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}
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int MemoryInputStream::read (void* const buffer, const int howMany)
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{
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jassert (howMany >= 0);
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const int num = jmin (howMany, (int) (dataSize - position));
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memcpy (buffer, data + position, num);
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position += num;
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return (int) num;
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}
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bool MemoryInputStream::isExhausted()
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{
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return (position >= dataSize);
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}
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bool MemoryInputStream::setPosition (const int64 pos)
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{
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position = (int) jlimit ((int64) 0, (int64) dataSize, pos);
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return true;
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}
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int64 MemoryInputStream::getPosition()
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{
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return position;
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}
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END_JUCE_NAMESPACE
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