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/*
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 * Realmedia RTSP (RDT) definitions
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 * Copyright (c) 2007 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#ifndef AVFORMAT_RDT_H
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#define AVFORMAT_RDT_H
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/**
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 * Calculate the response (RealChallenge2 in the RTSP header) to the
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 * challenge (RealChallenge1 in the RTSP header from the Real/Helix
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 * server), which is used as some sort of client validation.
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 *
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 * @param response pointer to response buffer, it should be at least 41 bytes
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 *                 (40 data + 1 zero) bytes long.
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 * @param chksum pointer to buffer containing a checksum of the response,
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 *               it should be at least 9 (8 data + 1 zero) bytes long.
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 * @param challenge pointer to the RealChallenge1 value provided by the
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 *                  server.
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 */
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void ff_rdt_calc_response_and_checksum(char response[41], char chksum[9],
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                                       const char *challenge);
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#endif /* AVFORMAT_RDT_H */