segment.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef TEENAGENT_SEGMENT_H
#define TEENAGENT_SEGMENT_H

#include "common/stream.h"
#include "common/endian.h"

namespace TeenAgent {

class Segment {
    uint32 _size;
    byte *_data;

public:
    Segment() : _size(0), _data(0) {}
    ~Segment();

    void read(Common::ReadStream *s, uint32 _size);

    inline byte get_byte(uint32 offset) const {
        assert(offset < _size);
        return _data[offset];
    }

    inline uint16 get_word(uint32 offset) const {
        assert(offset + 1 < _size);
        return READ_LE_UINT16(_data + offset);
    }

    inline void set_byte(uint32 offset, byte v) const {
        assert(offset < _size);
        _data[offset] = v;
    }

    inline void set_word(uint32 offset, uint16 v) const {
        assert(offset + 1 < _size);
        return WRITE_LE_UINT16(_data + offset, v);
    }

    const byte *ptr(uint32 addr) const {
        assert(addr < _size);
        return _data + addr;
    }

    byte *ptr(uint32 addr) {
        assert(addr < _size);
        return _data + addr;
    }

    uint size() const { return _size; }
};

} // End of namespace TeenAgent

#endif