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200 lines
6.8 KiB
C
200 lines
6.8 KiB
C
/* Spa 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 SPA_AVB_PACKETS_H
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#define SPA_AVB_PACKETS_H
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#define SPA_AVBTP_SUBTYPE_61883_IIDC 0x00
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#define SPA_AVBTP_SUBTYPE_MMA_STREAM 0x01
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#define SPA_AVBTP_SUBTYPE_AAF 0x02
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#define SPA_AVBTP_SUBTYPE_CVF 0x03
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#define SPA_AVBTP_SUBTYPE_CRF 0x04
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#define SPA_AVBTP_SUBTYPE_TSCF 0x05
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#define SPA_AVBTP_SUBTYPE_SVF 0x06
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#define SPA_AVBTP_SUBTYPE_RVF 0x07
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#define SPA_AVBTP_SUBTYPE_AEF_CONTINUOUS 0x6E
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#define SPA_AVBTP_SUBTYPE_VSF_STREAM 0x6F
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#define SPA_AVBTP_SUBTYPE_EF_STREAM 0x7F
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#define SPA_AVBTP_SUBTYPE_NTSCF 0x82
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#define SPA_AVBTP_SUBTYPE_ESCF 0xEC
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#define SPA_AVBTP_SUBTYPE_EECF 0xED
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#define SPA_AVBTP_SUBTYPE_AEF_DISCRETE 0xEE
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#define SPA_AVBTP_SUBTYPE_ADP 0xFA
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#define SPA_AVBTP_SUBTYPE_AECP 0xFB
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#define SPA_AVBTP_SUBTYPE_ACMP 0xFC
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#define SPA_AVBTP_SUBTYPE_MAAP 0xFE
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#define SPA_AVBTP_SUBTYPE_EF_CONTROL 0xFF
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struct spa_avbtp_packet_common {
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uint8_t subtype;
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#if __BYTE_ORDER == __BIG_ENDIAN
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unsigned sv:1; /* stream_id valid */
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unsigned version:3;
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unsigned subtype_data1:4;
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#elif __BYTE_ORDER == __LITTLE_ENDIAN
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unsigned subtype_data1:4;
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unsigned version:3;
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unsigned sv:1;
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#elif
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#error "Unknown byte order"
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#endif
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uint16_t subtype_data2;
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uint64_t stream_id;
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uint8_t payload[0];
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} __attribute__ ((__packed__));
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#define SPA_AVBTP_PACKET_SET_SUBTYPE(p,v) ((p)->subtype = (v))
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#define SPA_AVBTP_PACKET_SET_SV(p,v) ((p)->sv = (v))
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#define SPA_AVBTP_PACKET_SET_VERSION(p,v) ((p)->version = (v))
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#define SPA_AVBTP_PACKET_SET_STREAM_ID(p,v) ((p)->stream_id = htobe64(v))
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#define SPA_AVBTP_PACKET_GET_SUBTYPE(p) ((p)->subtype)
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#define SPA_AVBTP_PACKET_GET_SV(p) ((p)->sv)
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#define SPA_AVBTP_PACKET_GET_VERSION(p) ((p)->version)
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#define SPA_AVBTP_PACKET_GET_STREAM_ID(p) be64toh((p)->stream_id)
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struct spa_avbtp_packet_cc {
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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 control_data1:4;
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#elif __BYTE_ORDER == __LITTLE_ENDIAN
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unsigned control_data1:4;
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unsigned version:3;
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unsigned sv:1;
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#endif
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uint8_t status;
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uint16_t control_frame_length;
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uint64_t stream_id;
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uint8_t payload[0];
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} __attribute__ ((__packed__));
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#define SPA_AVBTP_PACKET_CC_SET_SUBTYPE(p,v) ((p)->subtype = (v))
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#define SPA_AVBTP_PACKET_CC_SET_SV(p,v) ((p)->sv = (v))
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#define SPA_AVBTP_PACKET_CC_SET_VERSION(p,v) ((p)->version = (v))
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#define SPA_AVBTP_PACKET_CC_SET_STREAM_ID(p,v) ((p)->stream_id = htobe64(v))
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#define SPA_AVBTP_PACKET_CC_SET_STATUS(p,v) ((p)->status = (v))
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#define SPA_AVBTP_PACKET_CC_SET_LENGTH(p,v) ((p)->control_frame_length = htons(v))
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#define SPA_AVBTP_PACKET_CC_GET_SUBTYPE(p) ((p)->subtype)
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#define SPA_AVBTP_PACKET_CC_GET_SV(p) ((p)->sv)
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#define SPA_AVBTP_PACKET_CC_GET_VERSION(p) ((p)->version)
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#define SPA_AVBTP_PACKET_CC_GET_STREAM_ID(p) be64toh((p)->stream_id)
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#define SPA_AVBTP_PACKET_CC_GET_STATUS(p) ((p)->status)
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#define SPA_AVBTP_PACKET_CC_GET_LENGTH(p) ntohs((p)->control_frame_length)
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/* AAF */
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struct spa_avbtp_packet_aaf {
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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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#define SPA_AVBTP_AAF_FORMAT_USER 0x00
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#define SPA_AVBTP_AAF_FORMAT_FLOAT_32BIT 0x01
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#define SPA_AVBTP_AAF_FORMAT_INT_32BIT 0x02
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#define SPA_AVBTP_AAF_FORMAT_INT_24BIT 0x03
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#define SPA_AVBTP_AAF_FORMAT_INT_16BIT 0x04
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#define SPA_AVBTP_AAF_FORMAT_AES3_32BIT 0x05
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uint8_t format;
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#define SPA_AVBTP_AAF_PCM_NSR_USER 0x00
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#define SPA_AVBTP_AAF_PCM_NSR_8KHZ 0x01
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#define SPA_AVBTP_AAF_PCM_NSR_16KHZ 0x02
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#define SPA_AVBTP_AAF_PCM_NSR_32KHZ 0x03
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#define SPA_AVBTP_AAF_PCM_NSR_44_1KHZ 0x04
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#define SPA_AVBTP_AAF_PCM_NSR_48KHZ 0x05
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#define SPA_AVBTP_AAF_PCM_NSR_88_2KHZ 0x06
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#define SPA_AVBTP_AAF_PCM_NSR_96KHZ 0x07
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#define SPA_AVBTP_AAF_PCM_NSR_176_4KHZ 0x08
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#define SPA_AVBTP_AAF_PCM_NSR_192KHZ 0x09
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#define SPA_AVBTP_AAF_PCM_NSR_24KHZ 0x0A
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#if __BYTE_ORDER == __BIG_ENDIAN
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unsigned nsr:4;
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unsigned _r3:4;
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#elif __BYTE_ORDER == __LITTLE_ENDIAN
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unsigned _r3:4;
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unsigned nsr:4;
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#endif
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uint8_t chan_per_frame;
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uint8_t bit_depth;
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uint16_t data_len;
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#define SPA_AVBTP_AAF_PCM_SP_NORMAL 0x00
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#define SPA_AVBTP_AAF_PCM_SP_SPARSE 0x01
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#if __BYTE_ORDER == __BIG_ENDIAN
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unsigned _r4:3;
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unsigned sp:1;
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unsigned event:4;
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#elif __BYTE_ORDER == __LITTLE_ENDIAN
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unsigned event:4;
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unsigned sp:1;
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unsigned _r4:3;
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#endif
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uint8_t _r5;
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uint8_t payload[0];
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} __attribute__ ((__packed__));
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#define SPA_AVBTP_PACKET_AAF_SET_SUBTYPE(p,v) ((p)->subtype = (v))
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#define SPA_AVBTP_PACKET_AAF_SET_SV(p,v) ((p)->sv = (v))
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#define SPA_AVBTP_PACKET_AAF_SET_VERSION(p,v) ((p)->version = (v))
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#define SPA_AVBTP_PACKET_AAF_SET_MR(p,v) ((p)->mr = (v))
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#define SPA_AVBTP_PACKET_AAF_SET_GV(p,v) ((p)->gv = (v))
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#define SPA_AVBTP_PACKET_AAF_SET_TV(p,v) ((p)->tv = (v))
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#define SPA_AVBTP_PACKET_AAF_SET_SEQ_NUM(p,v) ((p)->seq_num = (v))
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#define SPA_AVBTP_PACKET_AAF_SET_TU(p,v) ((p)->tu = (v))
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#define SPA_AVBTP_PACKET_AAF_SET_STREAM_ID(p,v) ((p)->stream_id = htobe64(v))
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#define SPA_AVBTP_PACKET_AAF_SET_TIMESTAMP(p,v) ((p)->timestamp = htonl(v))
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#define SPA_AVBTP_PACKET_AAF_SET_DATA_LEN(p,v) ((p)->data_len = htons(v))
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#define SPA_AVBTP_PACKET_AAF_SET_FORMAT(p,v) ((p)->format = (v))
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#define SPA_AVBTP_PACKET_AAF_SET_NSR(p,v) ((p)->nsr = (v))
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#define SPA_AVBTP_PACKET_AAF_SET_CHAN_PER_FRAME(p,v) ((p)->chan_per_frame = (v))
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#define SPA_AVBTP_PACKET_AAF_SET_BIT_DEPTH(p,v) ((p)->bit_depth = (v))
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#define SPA_AVBTP_PACKET_AAF_SET_SP(p,v) ((p)->sp = (v))
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#define SPA_AVBTP_PACKET_AAF_SET_EVENT(p,v) ((p)->event = (v))
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#define SPA_AVBTP_PACKET_AAF_GET_SUBTYPE(p) ((p)->subtype)
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#define SPA_AVBTP_PACKET_AAF_GET_SV(p) ((p)->sv)
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#define SPA_AVBTP_PACKET_AAF_GET_VERSION(p) ((p)->version)
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#define SPA_AVBTP_PACKET_AAF_GET_MR(p) ((p)->mr)
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#define SPA_AVBTP_PACKET_AAF_GET_GV(p) ((p)->gv)
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#define SPA_AVBTP_PACKET_AAF_GET_TV(p) ((p)->tv)
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#define SPA_AVBTP_PACKET_AAF_GET_SEQ_NUM(p) ((p)->seq_num)
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#define SPA_AVBTP_PACKET_AAF_GET_TU(p) ((p)->tu)
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#define SPA_AVBTP_PACKET_AAF_GET_STREAM_ID(p) be64toh((p)->stream_id)
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#define SPA_AVBTP_PACKET_AAF_GET_TIMESTAMP(p) ntohl((p)->timestamp)
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#define SPA_AVBTP_PACKET_AAF_GET_DATA_LEN(p) ntohs((p)->data_len)
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#define SPA_AVBTP_PACKET_AAF_GET_FORMAT(p) ((p)->format)
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#define SPA_AVBTP_PACKET_AAF_GET_NSR(p) ((p)->nsr)
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#define SPA_AVBTP_PACKET_AAF_GET_CHAN_PER_FRAME(p) ((p)->chan_per_frame)
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#define SPA_AVBTP_PACKET_AAF_GET_BIT_DEPTH(p) ((p)->bit_depth)
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#define SPA_AVBTP_PACKET_AAF_GET_SP(p) ((p)->sp)
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#define SPA_AVBTP_PACKET_AAF_GET_EVENT(p) ((p)->event)
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#endif /* SPA_AVB_PACKETS_H */
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