bititerator.hpp

/* -*- tab-width:4; c-basic-offset:4 -*- */
/*
 * libopenraw - bititerator.cpp
 *
 * Copyright (C) 2008 Rafael Avila de Espindola.
 *
 * 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 3 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, see
 * <http://www.gnu.org/licenses/>.
 */
 
#pragma once
 
#include <stdint.h>
#include <stddef.h>
 
namespace OpenRaw {
namespace Internals {
 
class BitIterator {
private:
    const uint8_t* m_p;
    size_t m_size;
 
    uint32_t m_bitBuffer;
    size_t m_bitsOnBuffer;
    void load(size_t numBits);
    void addByte(uint8_t byte);
 
public:
    BitIterator(const uint8_t *p, size_t s);
    uint32_t get(size_t);
    uint32_t peek(size_t);
    void skip(size_t);
};
 
}
}