bytereader.h

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/*
 * find_start_code from libavcodec/FFmpeg
 * Copyright (c) 2022 Scott Theisen
 *
 * This file is part of MythTV.  The functions have been adapted to use C++.
 *
 * FFmpeg 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.
 *
 * FFmpeg 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 FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
 
#ifndef BYTEREADER_H
#define BYTEREADER_H
 
#include <cstdint>
 
#include "mythtvexp.h"
 
namespace ByteReader
{
inline bool start_code_is_valid(uint32_t start_code)
{
    return (start_code & 0xFFFFFF00) == 0x100;
}
 
MTV_PUBLIC
const uint8_t* find_start_code(const uint8_t *p,
                               const uint8_t *end,
                               uint32_t *start_code);
 
MTV_PUBLIC
const uint8_t *find_start_code_truncated(const uint8_t * p,
                                         const uint8_t * end,
                                         uint32_t * start_code);
 
} // namespace ByteReader
 
#endif // BYTEREADER_H