raze/source/libsmackerdec/include/BitReader.h

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2019-09-19 22:42:45 +00:00
/*
* libsmackerdec - Smacker video decoder
* Copyright (C) 2011 Barry Duncan
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _SmackerBitReader_h_
#define _SmackerBitReader_h_
#include <stdint.h>
#include "FileStream.h"
namespace SmackerCommon {
class BitReader
{
public:
BitReader(SmackerCommon::FileStream &file, uint32_t size);
~BitReader();
uint32_t GetBit();
uint32_t GetBits(uint32_t n);
void SkipBits(uint32_t n);
uint32_t GetSize();
uint32_t GetPosition();
private:
uint32_t totalSize;
uint32_t currentOffset;
uint32_t bytesRead;
SmackerCommon::FileStream *file;
uint8_t *cache;
void FillCache();
};
} // close namespace SmackerCommon
#endif