blob: 30b8859fe03a1c9c6982f6a7bb0a58e597e03803 (
plain)
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
|
/******************************************************************************
*
* Copyright (C) 2003-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* This contains constants definitions and other information from the AVCTP
* specification. This file is intended for use internal to AVCT only.
*
******************************************************************************/
#ifndef AVCT_DEFS_H
#define AVCT_DEFS_H
/*****************************************************************************
** constants
*****************************************************************************/
/* packet type */
#define AVCT_PKT_TYPE_SINGLE 0 /* single packet */
#define AVCT_PKT_TYPE_START 1 /* start packet */
#define AVCT_PKT_TYPE_CONT 2 /* continue packet */
#define AVCT_PKT_TYPE_END 3 /* end packet */
/* header lengths for different packet types */
#define AVCT_HDR_LEN_SINGLE 3
#define AVCT_HDR_LEN_START 4
#define AVCT_HDR_LEN_CONT 1
#define AVCT_HDR_LEN_END 1
/* invalid cr+ipid value */
#define AVCT_CR_IPID_INVALID 1
/*****************************************************************************
** message parsing and building macros
*****************************************************************************/
#define AVCT_BLD_HDR(p, label, type, cr_ipid) \
*(p)++ = ((label) << 4) | ((type) << 2) | (cr_ipid);
#define AVCT_PRS_HDR(p, label, type, cr_ipid) \
label = *(p) >> 4; \
type = (*(p) >> 2) & 3; \
cr_ipid = *(p)++ & 3;
#define AVCT_PRS_PKT_TYPE(p, type) \
type = (*(p) >> 2) & 3;
#endif /* AVCT_DEFS_H */
|
