61 lines
1.2 KiB
C
61 lines
1.2 KiB
C
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/*
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* BlueALSA - a2dp-rtp.h
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* Copyright (c) 2016-2018 Arkadiusz Bokowy
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*
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* This file is a part of bluez-alsa.
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*
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* This project is licensed under the terms of the MIT license.
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*
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*/
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#ifndef BLUEALSA_A2DPRTP_H_
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#define BLUEALSA_A2DPRTP_H_
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#include <stdint.h>
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typedef struct rtp_header {
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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uint16_t cc:4;
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uint16_t extbit:1;
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uint16_t padbit:1;
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uint16_t version:2;
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uint16_t paytype:7;
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uint16_t markbit:1;
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#else
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uint16_t version:2;
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uint16_t padbit:1;
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uint16_t extbit:1;
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uint16_t cc:4;
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uint16_t markbit:1;
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uint16_t paytype:7;
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#endif
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uint16_t seq_number;
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uint32_t timestamp;
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uint32_t ssrc;
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uint32_t csrc[16];
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} __attribute__ ((packed)) rtp_header_t;
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/**
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* The length of the RTP header assuming that the `cc` field is set to zero. */
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#define RTP_HEADER_LEN (sizeof(rtp_header_t) - sizeof(((rtp_header_t *)0)->csrc))
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/**
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* Media payload header. */
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typedef struct rtp_media_header {
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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uint8_t frame_count:4;
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uint8_t rfa:1;
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uint8_t last_fragment:1;
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uint8_t first_fragment:1;
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uint8_t fragmented:1;
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#else
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uint8_t fragmented:1;
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uint8_t first_fragment:1;
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uint8_t last_fragment:1;
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uint8_t rfa:1;
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uint8_t frame_count:4;
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#endif
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} __attribute__ ((packed)) rtp_media_header_t;
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#endif
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