filereader.h

来自「Linux下比较早的基于命令行的DVD播放器」· C头文件 代码 · 共 112 行

//
// Copyright (c) 2005 by Istv醤 V醨adi
//
// This file is part of dxr3Player, a DVD player written specifically 
// for the DXR3 (aka Hollywood+) decoder card.

// 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 2 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, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

//------------------------------------------------------------------------------

#include <cstdio>

#include <inttypes.h>

//------------------------------------------------------------------------------

/**
 * Class to facilitate the reading of certain data types from an stdio
 * FILE.
 */
class FileReader
{
protected:
    /**
     * The file to read from.
     */
    FILE* file;

public:
    /**
     * Construct the reader with the given file.
     */
    FileReader(FILE* file);

    /**
     * Read an 8-bit unsigned value.
     *
     * @return if the reading was successful
     */
    bool read(uint8_t& x);

    /**
     * Read an 8-bit unsigned value.
     */
    uint8_t read8();

    /**
     * Read an 8-bit signed value.
     *
     * @return if the reading was successful
     */
    bool read(int8_t& x);

    /**
     * Read an 8-bit signed value.
     */
    int8_t readS8();

    /**
     * Read a 16-bit unsigned value.
     */
    bool read(uint16_t& x);

    /**
     * Read a 16-bit unsigned value.
     */
    uint16_t read16();

    /**
     * Read a 32-bit unsigned value.
     */
    bool read(uint32_t& x);

    /**
     * Read a 32-bit unsigned value.
     */
    uint32_t read32();

    /**
     * Read a 64-bit unsigned value.
     */
    bool read(uint64_t& x);

    /**
     * Read a 64-bit unsigned value.
     */
    uint64_t read64();

    /**
     * Read an array of bytes.
     */
    bool read(void* buffer, size_t length);
};

//------------------------------------------------------------------------------

// Local variables:
// mode: c++
// End: