204 lines
7.8 KiB
C
204 lines
7.8 KiB
C
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/******************************************************************************
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*
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* Copyright (C) 2002-2012 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/******************************************************************************
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*
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* This contains constants definitions and other information from the AVDTP
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* specification. This file is intended for use internal to AVDT only.
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*
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******************************************************************************/
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#ifndef AVDT_DEFS_H
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#define AVDT_DEFS_H
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/*****************************************************************************
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** constants
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*****************************************************************************/
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/* signalling packet type */
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#define AVDT_PKT_TYPE_SINGLE 0 /* single packet */
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#define AVDT_PKT_TYPE_START 1 /* start packet */
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#define AVDT_PKT_TYPE_CONT 2 /* continue packet */
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#define AVDT_PKT_TYPE_END 3 /* end packet */
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/* signalling message type */
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#define AVDT_MSG_TYPE_CMD 0 /* command */
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#define AVDT_MSG_TYPE_GRJ 1 /* general reject */
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#define AVDT_MSG_TYPE_RSP 2 /* response accept */
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#define AVDT_MSG_TYPE_REJ 3 /* response reject */
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/* signalling messages */
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#define AVDT_SIG_DISCOVER 1 /* discover */
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#define AVDT_SIG_GETCAP 2 /* get capabilities */
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#define AVDT_SIG_SETCONFIG 3 /* set configuration */
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#define AVDT_SIG_GETCONFIG 4 /* get configuration */
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#define AVDT_SIG_RECONFIG 5 /* reconfigure */
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#define AVDT_SIG_OPEN 6 /* open */
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#define AVDT_SIG_START 7 /* start */
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#define AVDT_SIG_CLOSE 8 /* close */
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#define AVDT_SIG_SUSPEND 9 /* suspend */
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#define AVDT_SIG_ABORT 10 /* abort */
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#define AVDT_SIG_SECURITY 11 /* security control */
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#define AVDT_SIG_GET_ALLCAP 12 /* get all capabilities */
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#define AVDT_SIG_DELAY_RPT 13 /* delay report */
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/* maximum signal value */
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#define AVDT_SIG_MAX AVDT_SIG_DELAY_RPT
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/* used for general reject */
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#define AVDT_SIG_NONE 0
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/* some maximum and minimum sizes of signalling messages */
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#define AVDT_DISCOVER_REQ_MIN 1
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#define AVDT_DISCOVER_REQ_MAX 124
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/* service category information element field values */
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#define AVDT_CAT_TRANS 1 /* Media Transport */
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#define AVDT_CAT_REPORT 2 /* Reporting */
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#define AVDT_CAT_RECOV 3 /* Recovery */
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#define AVDT_CAT_PROTECT 4 /* Content Protection */
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#define AVDT_CAT_HDRCMP 5 /* Header Compression */
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#define AVDT_CAT_MUX 6 /* Multiplexing */
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#define AVDT_CAT_CODEC 7 /* Media Codec */
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#define AVDT_CAT_DELAY_RPT 8 /* Delay Reporting */
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#define AVDT_CAT_MAX_CUR AVDT_CAT_DELAY_RPT
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/* min/max lengths of service category information elements */
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#define AVDT_LEN_TRANS_MIN 0
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#define AVDT_LEN_REPORT_MIN 0
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#define AVDT_LEN_RECOV_MIN 3
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#define AVDT_LEN_PROTECT_MIN 2
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#define AVDT_LEN_HDRCMP_MIN 1
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#define AVDT_LEN_MUX_MIN 3
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#define AVDT_LEN_CODEC_MIN 2
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#define AVDT_LEN_DELAY_RPT_MIN 0
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#define AVDT_LEN_TRANS_MAX 0
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#define AVDT_LEN_REPORT_MAX 0
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#define AVDT_LEN_RECOV_MAX 3
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#define AVDT_LEN_PROTECT_MAX 255
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#define AVDT_LEN_HDRCMP_MAX 1
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#define AVDT_LEN_MUX_MAX 7
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#define AVDT_LEN_CODEC_MAX 255
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#define AVDT_LEN_DELAY_RPT_MAX 0
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/* minimum possible size of configuration or capabilities data */
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#define AVDT_LEN_CFG_MIN 2
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/* minimum and maximum lengths for different message types */
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#define AVDT_LEN_SINGLE 1
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#define AVDT_LEN_SETCONFIG_MIN 2
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#define AVDT_LEN_RECONFIG_MIN 1
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#define AVDT_LEN_MULTI_MIN 1
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#define AVDT_LEN_SECURITY_MIN 1
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#define AVDT_LEN_DELAY_RPT 3
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/* header lengths for different packet types */
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#define AVDT_LEN_TYPE_SINGLE 2 /* single packet */
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#define AVDT_LEN_TYPE_START 3 /* start packet */
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#define AVDT_LEN_TYPE_CONT 1 /* continue packet */
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#define AVDT_LEN_TYPE_END 1 /* end packet */
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/* length of general reject message */
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#define AVDT_LEN_GEN_REJ 2
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/* recovery service capabilities information elements */
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#define AVDT_RECOV_MRWS_MIN 0x01 /* min value for maximum recovery window */
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#define AVDT_RECOV_MRWS_MAX 0x18 /* max value for maximum recovery window */
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#define AVDT_RECOV_MNMP_MIN 0x01 /* min value for maximum number of media packets */
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#define AVDT_RECOV_MNMP_MAX 0x18 /* max value for maximum number of media packets */
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/* SEID value range */
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#define AVDT_SEID_MIN 0x01
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#define AVDT_SEID_MAX 0x3E
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/* first byte of media packet header */
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#define AVDT_MEDIA_OCTET1 0x80
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/* for adaptation layer header */
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#define AVDT_ALH_LCODE_MASK 0x03 /* coding of length field */
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#define AVDT_ALH_LCODE_NONE 0x00 /* No length field present. Take length from l2cap */
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#define AVDT_ALH_LCODE_16BIT 0x01 /* 16bit length field */
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#define AVDT_ALH_LCODE_9BITM0 0x02 /* 9 bit length field, MSB = 0, 8 LSBs in 1 octet following */
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#define AVDT_ALH_LCODE_9BITM1 0x03 /* 9 bit length field, MSB = 1, 8 LSBs in 1 octet following */
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#define AVDT_ALH_FRAG_MASK 0x04 /* set this for continuation packet */
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/*****************************************************************************
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** message parsing and building macros
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*****************************************************************************/
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#define AVDT_MSG_PRS_HDR(p, lbl, pkt, msg) \
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lbl = *(p) >> 4; \
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pkt = (*(p) >> 2) & 0x03; \
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msg = *(p)++ & 0x03;
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#define AVDT_MSG_PRS_DISC(p, seid, in_use, type, tsep) \
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seid = *(p) >> 2; \
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in_use = (*(p)++ >> 1) & 0x01; \
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type = *(p) >> 4; \
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tsep = (*(p)++ >> 3) & 0x01;
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#define AVDT_MSG_PRS_SIG(p, sig) \
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sig = *(p)++ & 0x3F;
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#define AVDT_MSG_PRS_SEID(p, seid) \
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seid = *(p)++ >> 2;
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#define AVDT_MSG_PRS_PKT_TYPE(p, pkt) \
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pkt = (*(p) >> 2) & 0x03;
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#define AVDT_MSG_PRS_OCTET1(p, o_v, o_p, o_x, o_cc) \
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o_v = *(p) >> 6; \
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o_p = (*(p) >> 5) & 0x01; \
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o_x = (*(p) >> 4) & 0x01; \
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o_cc = *(p)++ & 0x0F;
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#define AVDT_MSG_PRS_RPT_OCTET1(p, o_v, o_p, o_cc) \
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o_v = *(p) >> 6; \
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o_p = (*(p) >> 5) & 0x01; \
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o_cc = *(p)++ & 0x1F;
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#define AVDT_MSG_PRS_M_PT(p, m_pt, marker) \
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marker = *(p) >> 7; \
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m_pt = *(p)++ & 0x7F;
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#define AVDT_MSG_BLD_HDR(p, lbl, pkt, msg) \
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*(p)++ = (UINT8) ((lbl) << 4) | ((pkt) << 2) | (msg);
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#define AVDT_MSG_BLD_DISC(p, seid, in_use, type, tsep) \
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*(p)++ = (UINT8) (((seid) << 2) | ((in_use) << 1)); \
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*(p)++ = (UINT8) (((type) << 4) | ((tsep) << 3));
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#define AVDT_MSG_BLD_SIG(p, sig) \
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*(p)++ = (UINT8) (sig);
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#define AVDT_MSG_BLD_SEID(p, seid) \
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*(p)++ = (UINT8) ((seid) << 2);
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#define AVDT_MSG_BLD_ERR(p, err) \
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*(p)++ = (UINT8) (err);
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#define AVDT_MSG_BLD_PARAM(p, param) \
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*(p)++ = (UINT8) (param);
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#define AVDT_MSG_BLD_NOSP(p, nosp) \
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*(p)++ = (UINT8) (nosp);
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#endif /* AVDT_DEFS_H */
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