1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/*
* 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_PARSER_INTERNAL_H
#define AVCODEC_PARSER_INTERNAL_H
#include <stdint.h>
#include "libavutil/macros.h"
#include "avcodec.h"
#include "codec_id.h"
#if FF_API_PARSER_PRIVATE
typedef union FFCodecParser {
struct {
#if FF_API_PARSER_CODECID
int codec_ids[7]; /* several codec IDs are permitted */
#else
enum AVCodecID codec_ids[7]; /* several codec IDs are permitted */
#endif
int priv_data_size;
int (*init)(AVCodecParserContext *s);
int (*parse)(AVCodecParserContext *s,
AVCodecContext *avctx,
const uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size);
void (*close)(AVCodecParserContext *s);
int (*split)(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
};
AVCodecParser p;
#else
typedef struct FFCodecParser {
AVCodecParser p;
unsigned priv_data_size;
int (*init)(AVCodecParserContext *s);
int (*parse)(AVCodecParserContext *s,
AVCodecContext *avctx,
const uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size);
void (*close)(AVCodecParserContext *s);
#endif
} FFCodecParser;
static inline const FFCodecParser *ffcodecparser(const AVCodecParser *parser)
{
return (const FFCodecParser*)parser;
}
#define EIGTH_ARG(a,b,c,d,e,f,g,h,...) h
#define NO_FAIL
// Expands to nothing if <= 7 args; induces compilation failure if not.
#define CHECK_FOR_TOO_MANY_IDS(...) AV_JOIN(EIGTH_ARG(__VA_ARGS__, NO, NO, NO, NO, NO, NO, NO, NO), _FAIL)
// For compatibility with MSVC's old, spec-incompliant preprocessor.
#define FF_MSVC_EXPAND(...) __VA_ARGS__
#define FIRST_SEVEN2(a,b,c,d,e,f,g,...) a,b,c,d,e,f,g
#define FIRST_SEVEN(...) FF_MSVC_EXPAND(FIRST_SEVEN2(__VA_ARGS__))
#define TIMES_SEVEN(a) a,a,a,a,a,a,a
#if FF_API_PARSER_PRIVATE
#define PARSER_CODEC_LIST(...) CHECK_FOR_TOO_MANY_IDS(__VA_ARGS__) \
.codec_ids = { FIRST_SEVEN(__VA_ARGS__, TIMES_SEVEN(AV_CODEC_ID_NONE)) }
#else
#define PARSER_CODEC_LIST(...) CHECK_FOR_TOO_MANY_IDS(__VA_ARGS__) \
.p.codec_ids = { FIRST_SEVEN(__VA_ARGS__, TIMES_SEVEN(AV_CODEC_ID_NONE)) }
#endif
#endif /* AVCODEC_PARSER_INTERNAL_H */
|
