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90 lines
1.9 KiB
C
90 lines
1.9 KiB
C
/* AVB support */
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/* SPDX-FileCopyrightText: Copyright © 2022 Wim Taymans */
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/* SPDX-License-Identifier: MIT */
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#ifndef AVB_IEC61883_H
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#define AVB_IEC61883_H
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#include "packets.h"
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struct avb_packet_iec61883 {
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uint8_t subtype;
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#if __BYTE_ORDER == __BIG_ENDIAN
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unsigned sv:1;
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unsigned version:3;
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unsigned mr:1;
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unsigned _r1:1;
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unsigned gv:1;
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unsigned tv:1;
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uint8_t seq_num;
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unsigned _r2:7;
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unsigned tu:1;
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#elif __BYTE_ORDER == __LITTLE_ENDIAN
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unsigned tv:1;
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unsigned gv:1;
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unsigned _r1:1;
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unsigned mr:1;
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unsigned version:3;
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unsigned sv:1;
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uint8_t seq_num;
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unsigned tu:1;
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unsigned _r2:7;
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#endif
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uint64_t stream_id;
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uint32_t timestamp;
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uint32_t gateway_info;
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uint16_t data_len;
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#if __BYTE_ORDER == __BIG_ENDIAN
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uint8_t tag:2;
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uint8_t channel:6;
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uint8_t tcode:4;
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uint8_t app:4;
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uint8_t qi1:2; /* CIP Quadlet Indicator 1 */
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uint8_t sid:6; /* CIP Source ID */
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uint8_t dbs; /* CIP Data Block Size */
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uint8_t fn:2; /* CIP Fraction Number */
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uint8_t qpc:3; /* CIP Quadlet Padding Count */
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uint8_t sph:1; /* CIP Source Packet Header */
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uint8_t _r3:2;
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uint8_t dbc; /* CIP Data Block Continuity */
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uint8_t qi2:2; /* CIP Quadlet Indicator 2 */
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uint8_t format_id:6; /* CIP Format ID */
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#elif __BYTE_ORDER == __LITTLE_ENDIAN
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uint8_t channel:6;
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uint8_t tag:2;
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uint8_t app:4;
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uint8_t tcode:4;
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uint8_t sid:6; /* CIP Source ID */
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uint8_t qi1:2; /* CIP Quadlet Indicator 1 */
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uint8_t dbs; /* CIP Data Block Size */
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uint8_t _r3:2;
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uint8_t sph:1; /* CIP Source Packet Header */
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uint8_t qpc:3; /* CIP Quadlet Padding Count */
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uint8_t fn:2; /* CIP Fraction Number */
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uint8_t dbc; /* CIP Data Block Continuity */
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uint8_t format_id:6; /* CIP Format ID */
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uint8_t qi2:2; /* CIP Quadlet Indicator 2 */
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#endif
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uint8_t fdf; /* CIP Format Dependent Field */
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uint16_t syt;
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uint8_t payload[0];
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} __attribute__ ((__packed__));
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#endif /* AVB_IEC61883_H */
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