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63 lines
2.3 KiB
63 lines
2.3 KiB
/****************************************************************************** |
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* |
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* Copyright (C) 2003-2012 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 AVCTP |
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* specification. This file is intended for use internal to AVCT only. |
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* |
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******************************************************************************/ |
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#ifndef AVCT_DEFS_H |
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#define AVCT_DEFS_H |
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/***************************************************************************** |
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* constants |
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****************************************************************************/ |
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/* packet type */ |
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#define AVCT_PKT_TYPE_SINGLE 0 /* single packet */ |
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#define AVCT_PKT_TYPE_START 1 /* start packet */ |
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#define AVCT_PKT_TYPE_CONT 2 /* continue packet */ |
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#define AVCT_PKT_TYPE_END 3 /* end packet */ |
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/* header lengths for different packet types */ |
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#define AVCT_HDR_LEN_SINGLE 3 |
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#define AVCT_HDR_LEN_START 4 |
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#define AVCT_HDR_LEN_CONT 1 |
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#define AVCT_HDR_LEN_END 1 |
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/* invalid cr+ipid value */ |
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#define AVCT_CR_IPID_INVALID 1 |
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/***************************************************************************** |
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* message parsing and building macros |
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****************************************************************************/ |
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#define AVCT_BUILD_HDR(p, label, type, cr_ipid) \ |
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*(p)++ = ((label) << 4) | ((type) << 2) | (cr_ipid); |
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#define AVCT_PARSE_HDR(p, label, type, cr_ipid) \ |
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do { \ |
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(label) = *(p) >> 4; \ |
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(type) = (*(p) >> 2) & 3; \ |
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(cr_ipid) = *(p)++ & 3; \ |
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} while (0) |
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#define AVCT_PKT_TYPE(p) ((*(p) >> 2) & 3) |
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#endif /* AVCT_DEFS_H */
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