1/*
2 * Common AAC and AC-3 parser prototypes
3 * Copyright (c) 2003 Fabrice Bellard
4 * Copyright (c) 2003 Michael Niedermayer
5 *
6 * This file is part of FFmpeg.
7 *
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.
12 *
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.
17 *
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
21 */
22
23#ifndef AVCODEC_AAC_AC3_PARSER_H
24#define AVCODEC_AAC_AC3_PARSER_H
25
26#include <stdint.h>
27#include "avcodec.h"
28#include "parser.h"
29
30typedef enum {
31    AAC_AC3_PARSE_ERROR_SYNC        = -0x1030c0a,
32    AAC_AC3_PARSE_ERROR_BSID        = -0x2030c0a,
33    AAC_AC3_PARSE_ERROR_SAMPLE_RATE = -0x3030c0a,
34    AAC_AC3_PARSE_ERROR_FRAME_SIZE  = -0x4030c0a,
35    AAC_AC3_PARSE_ERROR_FRAME_TYPE  = -0x5030c0a,
36    AAC_AC3_PARSE_ERROR_CRC         = -0x6030c0a,
37    AAC_AC3_PARSE_ERROR_CHANNEL_CFG = -0x7030c0a,
38} AACAC3ParseError;
39
40typedef struct AACAC3ParseContext {
41    ParseContext pc;
42    int frame_size;
43    int header_size;
44    int (*sync)(uint64_t state, struct AACAC3ParseContext *hdr_info,
45            int *need_next_header, int *new_frame_start);
46
47    int channels;
48    int sample_rate;
49    int bit_rate;
50    int samples;
51    uint64_t channel_layout;
52    int service_type;
53
54    int remaining_size;
55    uint64_t state;
56
57    int need_next_header;
58    enum AVCodecID codec_id;
59} AACAC3ParseContext;
60
61int ff_aac_ac3_parse(AVCodecParserContext *s1,
62                     AVCodecContext *avctx,
63                     const uint8_t **poutbuf, int *poutbuf_size,
64                     const uint8_t *buf, int buf_size);
65
66#endif /* AVCODEC_AAC_AC3_PARSER_H */
67