/*

  * AC-3 parser prototypes

  * Copyright (c) 2003 Fabrice Bellard
  * Copyright (c) 2003 Michael Niedermayer

  *
  * This file is part of FFmpeg.
  *
  * 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 AVCODEC_AC3_PARSER_H
 #define AVCODEC_AC3_PARSER_H

 
 #include "ac3.h"

 #include "get_bits.h"

 
 /**

  * Parse AC-3 frame header.
  * Parse the header up to the lfeon element, which is the first 52 or 54 bits

  * depending on the audio coding mode.

  * @param[in]  gbc BitContext containing the first 54 bits of the frame.

  * @param[out] hdr Pointer to Pointer to struct where header info is written.
  *                 will be allocated if NULL

  * @return Returns 0 on success, -1 if there is a sync word mismatch,
  * -2 if the bsid (version) element is invalid, -3 if the fscod (sample rate)
  * element is invalid, or -4 if the frmsizecod (bit rate) element is invalid.
  */

 int avpriv_ac3_parse_header(GetBitContext *gbc, AC3HeaderInfo **hdr);

 #endif /* AVCODEC_AC3_PARSER_H */