/******************************************************************************
*
* Copyright 2002-2012 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 AVDTP
* specification. This file is intended for use internal to AVDT only.
*
******************************************************************************/
#ifndef AVDT_DEFS_H
#define AVDT_DEFS_H
/*****************************************************************************
* constants
****************************************************************************/
/* signalling packet type */
#define AVDT_PKT_TYPE_SINGLE 0 /* single packet */
#define AVDT_PKT_TYPE_START 1 /* start packet */
#define AVDT_PKT_TYPE_CONT 2 /* continue packet */
#define AVDT_PKT_TYPE_END 3 /* end packet */
/* signalling message type */
#define AVDT_MSG_TYPE_CMD 0 /* command */
#define AVDT_MSG_TYPE_GRJ 1 /* general reject */
#define AVDT_MSG_TYPE_RSP 2 /* response accept */
#define AVDT_MSG_TYPE_REJ 3 /* response reject */
/* signalling messages */
#define AVDT_SIG_DISCOVER 1 /* discover */
#define AVDT_SIG_GETCAP 2 /* get capabilities */
#define AVDT_SIG_SETCONFIG 3 /* set configuration */
#define AVDT_SIG_GETCONFIG 4 /* get configuration */
#define AVDT_SIG_RECONFIG 5 /* reconfigure */
#define AVDT_SIG_OPEN 6 /* open */
#define AVDT_SIG_START 7 /* start */
#define AVDT_SIG_CLOSE 8 /* close */
#define AVDT_SIG_SUSPEND 9 /* suspend */
#define AVDT_SIG_ABORT 10 /* abort */
#define AVDT_SIG_SECURITY 11 /* security control */
#define AVDT_SIG_GET_ALLCAP 12 /* get all capabilities */
#define AVDT_SIG_DELAY_RPT 13 /* delay report */
/* maximum signal value */
#define AVDT_SIG_MAX AVDT_SIG_DELAY_RPT
/* used for general reject */
#define AVDT_SIG_NONE 0
/* some maximum and minimum sizes of signalling messages */
#define AVDT_DISCOVER_REQ_MIN 1
#define AVDT_DISCOVER_REQ_MAX 124
/* service category information element field values */
#define AVDT_CAT_TRANS 1 /* Media Transport */
#define AVDT_CAT_REPORT 2 /* Reporting */
#define AVDT_CAT_RECOV 3 /* Recovery */
#define AVDT_CAT_PROTECT 4 /* Content Protection */
#define AVDT_CAT_HDRCMP 5 /* Header Compression */
#define AVDT_CAT_MUX 6 /* Multiplexing */
#define AVDT_CAT_CODEC 7 /* Media Codec */
#define AVDT_CAT_DELAY_RPT 8 /* Delay Reporting */
#define AVDT_CAT_MAX_CUR AVDT_CAT_DELAY_RPT
/* min/max lengths of service category information elements */
#define AVDT_LEN_TRANS_MIN 0
#define AVDT_LEN_REPORT_MIN 0
#define AVDT_LEN_RECOV_MIN 3
#define AVDT_LEN_PROTECT_MIN 2
#define AVDT_LEN_HDRCMP_MIN 1
#define AVDT_LEN_MUX_MIN 3
#define AVDT_LEN_CODEC_MIN 2
#define AVDT_LEN_DELAY_RPT_MIN 0
#define AVDT_LEN_TRANS_MAX 0
#define AVDT_LEN_REPORT_MAX 0
#define AVDT_LEN_RECOV_MAX 3
#define AVDT_LEN_PROTECT_MAX 255
#define AVDT_LEN_HDRCMP_MAX 1
#define AVDT_LEN_MUX_MAX 7
#define AVDT_LEN_CODEC_MAX 255
#define AVDT_LEN_DELAY_RPT_MAX 0
/* minimum possible size of configuration or capabilities data */
#define AVDT_LEN_CFG_MIN 2
/* minimum and maximum lengths for different message types */
#define AVDT_LEN_SINGLE 1
#define AVDT_LEN_SETCONFIG_MIN 2
#define AVDT_LEN_RECONFIG_MIN 1
#define AVDT_LEN_MULTI_MIN 1
#define AVDT_LEN_SECURITY_MIN 1
#define AVDT_LEN_DELAY_RPT 3
/* header lengths for different packet types */
#define AVDT_LEN_TYPE_SINGLE 2 /* single packet */
#define AVDT_LEN_TYPE_START 3 /* start packet */
#define AVDT_LEN_TYPE_CONT 1 /* continue packet */
#define AVDT_LEN_TYPE_END 1 /* end packet */
/* length of general reject message */
#define AVDT_LEN_GEN_REJ 2
/* recovery service capabilities information elements */
/* min value for maximum recovery window */
#define AVDT_RECOV_MRWS_MIN 0x01
/* max value for maximum recovery window */
#define AVDT_RECOV_MRWS_MAX 0x18
/* min value for maximum number of media packets */
#define AVDT_RECOV_MNMP_MIN 0x01
/* max value for maximum number of media packets */
#define AVDT_RECOV_MNMP_MAX 0x18
/* SEID value range */
#define AVDT_SEID_MIN 0x01
#define AVDT_SEID_MAX 0x3E
/* first byte of media packet header */
#define AVDT_MEDIA_OCTET1 0x80
/* for adaptation layer header */
/* coding of length field */
#define AVDT_ALH_LCODE_MASK 0x03
/* No length field present. Take length from l2cap */
#define AVDT_ALH_LCODE_NONE 0x00
/* 16bit length field */
#define AVDT_ALH_LCODE_16BIT 0x01
/* 9 bit length field, MSB = 0, 8 LSBs in 1 octet following */
#define AVDT_ALH_LCODE_9BITM0 0x02
/* 9 bit length field, MSB = 1, 8 LSBs in 1 octet following */
#define AVDT_ALH_LCODE_9BITM1 0x03
/* set this for continuation packet */
#define AVDT_ALH_FRAG_MASK 0x04
/*****************************************************************************
* message parsing and building macros
****************************************************************************/
#define AVDT_MSG_PRS_HDR(p, lbl, pkt, msg) \
do { \
(lbl) = (*(p) >> 4) & 0x0F; \
(pkt) = (*(p) >> 2) & 0x03; \
(msg) = *(p)++ & 0x03; \
} while (0)
#define AVDT_MSG_PRS_DISC(p, seid, in_use, type, tsep) \
do { \
(seid) = *(p) >> 2; \
(in_use) = (*(p)++ >> 1) & 0x01; \
(type) = (*(p) >> 4) & 0x0F; \
(tsep) = (*(p)++ >> 3) & 0x01; \
} while (0)
#define AVDT_MSG_PRS_SIG(p, sig) \
do { \
(sig) = (*(p)++) & 0x3F; \
} while (0)
#define AVDT_MSG_PRS_SEID(p, seid) \
do { \
(seid) = ((*(p)++) >> 2) & 0x3F; \
} while (0)
#define AVDT_MSG_PRS_PKT_TYPE(p, pkt) \
do { \
(pkt) = (*(p) >> 2) & 0x03; \
} while (0)
#define AVDT_MSG_PRS_OCTET1(p, o_v, o_p, o_x, o_cc) \
do { \
(o_v) = (*(p) >> 6) & 0x02; \
(o_p) = (*(p) >> 5) & 0x01; \
(o_x) = (*(p) >> 4) & 0x01; \
(o_cc) = (*(p)++) & 0x0F; \
} while (0)
#define AVDT_MSG_PRS_RPT_OCTET1(p, o_v, o_p, o_cc) \
do { \
(o_v) = (*(p) >> 6) & 0x02; \
(o_p) = (*(p) >> 5) & 0x01; \
(o_cc) = (*(p)++) & 0x1F; \
} while (0)
#define AVDT_MSG_PRS_M_PT(p, m_pt, marker) \
do { \
(marker) = (*(p) >> 7) & 0x01; \
(m_pt) = (*(p)++) & 0x7F; \
} while (0)
#define AVDT_MSG_BLD_HDR(p, lbl, pkt, msg) \
do { \
*(p)++ = (uint8_t)((lbl) << 4) | ((pkt) << 2) | (msg); \
} while (0)
#define AVDT_MSG_BLD_DISC(p, seid, in_use, type, tsep) \
do { \
*(p)++ = (uint8_t)(((seid) << 2) | ((in_use) << 1)); \
*(p)++ = (uint8_t)(((type) << 4) | ((tsep) << 3)); \
} while (0)
#define AVDT_MSG_BLD_SIG(p, sig) \
do { \
*(p)++ = (uint8_t)(sig); \
} while (0)
#define AVDT_MSG_BLD_SEID(p, seid) \
do { \
*(p)++ = (uint8_t)((seid) << 2); \
} while (0)
#define AVDT_MSG_BLD_ERR(p, err) \
do { \
*(p)++ = (uint8_t)(err); \
} while (0)
#define AVDT_MSG_BLD_PARAM(p, param) \
do { \
*(p)++ = (uint8_t)(param); \
} while (0)
#define AVDT_MSG_BLD_NOSP(p, nosp) \
do { \
*(p)++ = (uint8_t)(nosp); \
} while (0)
#endif /* AVDT_DEFS_H */