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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 | ||
30 | typedef 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 | ||
40 | typedef 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 | ||
61 | int 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 */ |