| /* |
| * 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 */ |
