rtcp.h

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#pragma once
 
#include <compy/priv/compiler_attrs.h>
 
#include <stddef.h>
#include <stdint.h>
 
#include <slice99.h>
 
#define COMPY_RTCP_SR   200
#define COMPY_RTCP_RR   201
#define COMPY_RTCP_SDES 202
#define COMPY_RTCP_BYE  203
#define COMPY_RTCP_APP  204
 
#define COMPY_RTCP_SDES_CNAME 1
 
#define COMPY_RTCP_MAX_PACKET_SIZE 512
 
typedef struct {
    uint8_t version;
    uint8_t padding;
    uint8_t count;
    uint8_t packet_type;
    uint16_t length;
} Compy_RtcpHeader;
 
typedef struct {
    uint32_t ssrc;
    uint32_t ntp_timestamp_msw;
    uint32_t ntp_timestamp_lsw;
    uint32_t rtp_timestamp;
    uint32_t sender_packet_count;
    uint32_t sender_octet_count;
} Compy_RtcpSenderInfo;
 
typedef struct {
    uint32_t ssrc;
    uint8_t fraction_lost;
    uint32_t cumulative_lost;
    uint32_t extended_highest_seq;
    uint32_t interarrival_jitter;
    uint32_t last_sr;
    uint32_t delay_since_last_sr;
} Compy_RtcpReportBlock;
 
size_t Compy_RtcpSenderReport_serialize(
    Compy_RtcpSenderInfo info, const char *cname,
    uint8_t buffer[restrict]) COMPY_PRIV_MUST_USE;
 
size_t Compy_RtcpBye_serialize(uint32_t ssrc, uint8_t buffer[restrict])
    COMPY_PRIV_MUST_USE;
 
int Compy_RtcpHeader_deserialize(
    Compy_RtcpHeader *restrict self, const uint8_t *data,
    size_t len) COMPY_PRIV_MUST_USE;
 
int Compy_RtcpReportBlock_deserialize(
    Compy_RtcpReportBlock *restrict self, const uint8_t *data,
    size_t len) COMPY_PRIV_MUST_USE;