mirror of
https://gitlab.freedesktop.org/pipewire/pipewire.git
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111 lines
2.9 KiB
C
111 lines
2.9 KiB
C
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/* AVB support
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*
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* Copyright © 2022 Wim Taymans
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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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_number;
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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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