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/* |
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* AC-3 parser prototypes |
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* Copyright (c) 2003 Fabrice Bellard
* Copyright (c) 2003 Michael Niedermayer |
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*
* 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
*/
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#ifndef AVCODEC_AC3_PARSER_H
#define AVCODEC_AC3_PARSER_H |
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#include "ac3.h" |
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#include "get_bits.h" |
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/** |
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* Parse AC-3 frame header.
* Parse the header up to the lfeon element, which is the first 52 or 54 bits |
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* depending on the audio coding mode. |
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* @param[in] gbc BitContext containing the first 54 bits of the frame. |
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* @param[out] hdr Pointer to Pointer to struct where header info is written.
* will be allocated if NULL |
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* @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.
*/ |
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int avpriv_ac3_parse_header2(GetBitContext *gbc, AC3HeaderInfo **hdr);
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int avpriv_ac3_parse_header(GetBitContext *gbc, AC3HeaderInfo *hdr); |
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#endif /* AVCODEC_AC3_PARSER_H */ |