Use (u)int16_t instead of (unsigned) short
[FFMpeg-mirror/DVCPRO-HD.git] / libavcodec / ac3_parser.h
blob63bea5651238853b65bd7534f5d76670dc4f57ac
1 /*
2 * AC3 parser prototypes
3 * Copyright (c) 2003 Fabrice Bellard.
4 * Copyright (c) 2003 Michael Niedermayer.
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #ifndef FFMPEG_AC3_PARSER_H
24 #define FFMPEG_AC3_PARSER_H
26 #include "ac3.h"
27 #include "bitstream.h"
29 typedef enum {
30 AC3_PARSE_ERROR_SYNC = -1,
31 AC3_PARSE_ERROR_BSID = -2,
32 AC3_PARSE_ERROR_SAMPLE_RATE = -3,
33 AC3_PARSE_ERROR_FRAME_SIZE = -4,
34 AC3_PARSE_ERROR_FRAME_TYPE = -5,
35 } AC3ParseError;
37 /**
38 * Parses AC-3 frame header.
39 * Parses the header up to the lfeon element, which is the first 52 or 54 bits
40 * depending on the audio coding mode.
41 * @param gbc[in] BitContext containing the first 54 bits of the frame.
42 * @param hdr[out] Pointer to struct where header info is written.
43 * @return Returns 0 on success, -1 if there is a sync word mismatch,
44 * -2 if the bsid (version) element is invalid, -3 if the fscod (sample rate)
45 * element is invalid, or -4 if the frmsizecod (bit rate) element is invalid.
47 int ff_ac3_parse_header(GetBitContext *gbc, AC3HeaderInfo *hdr);
49 /**
50 * Parses AC-3 frame header and sets channel_map
51 * Parses the header up to the lfeon (channel_map in E-AC-3)
52 * element, which is the first 52, 54 or 104 bits depending
53 * on the audio coding mode.
54 * @param gbc[in] BitContext containing the first 54 bits of the frame.
55 * @param hdr[out] Pointer to struct where header info is written.
56 * @return value returned by ff_ac3_parse_header
58 int ff_ac3_parse_header_full(GetBitContext *gbc, AC3HeaderInfo *hdr);
60 #endif /* FFMPEG_AC3_PARSER_H */