mpf_rtp_stat.h

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/*
 * Copyright 2008-2015 Arsen Chaloyan
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef MPF_RTP_STAT_H
#define MPF_RTP_STAT_H

/**
 * @file mpf_rtp_stat.h
 * @brief RTP/RTCP Statistics
 */ 

#include "mpf.h"

APT_BEGIN_EXTERN_C

/** RTP receiver statistics */
typedef struct rtp_rx_stat_t rtp_rx_stat_t;

/** RTCP statistics used in Sender Report (SR) */
typedef struct rtcp_sr_stat_t rtcp_sr_stat_t;
/** RTCP statistics used in Receiver Report (RR) */
typedef struct rtcp_rr_stat_t rtcp_rr_stat_t;


/** RTP receiver statistics */
struct rtp_rx_stat_t {
    /** number of valid RTP packets received */
    apr_uint32_t received_packets;
    /** number of invalid RTP packets received */
    apr_uint32_t invalid_packets;

    /** number of discarded in jitter buffer packets */
    apr_uint32_t discarded_packets;
    /** number of ignored packets */
    apr_uint32_t ignored_packets;

    /** number of lost in network packets */
    apr_uint32_t lost_packets;

    /** number of restarts */
    apr_byte_t   restarts;
};

/** RTCP statistics used in Sender Report (SR)  */
struct rtcp_sr_stat_t {
    /** sender source identifier */
    apr_uint32_t ssrc;
    /** NTP timestamp (seconds) */
    apr_uint32_t ntp_sec;
    /** NTP timestamp (fractions) */
    apr_uint32_t ntp_frac;
    /** RTP timestamp */
    apr_uint32_t rtp_ts;
    /** packets sent */
    apr_uint32_t sent_packets;
    /** octets (bytes) sent */
    apr_uint32_t sent_octets;
};

/** RTCP statistics used in Receiver Report (RR) */
struct rtcp_rr_stat_t {
    /** source identifier of RTP stream being received */
    apr_uint32_t ssrc;
    /** fraction lost since last SR/RR */
    apr_uint32_t fraction:8;
    /** cumulative number of packets lost (signed!) */
    apr_int32_t  lost:24;
    /** extended last sequence number received */
    apr_uint32_t last_seq;
    /** interarrival jitter (RFC3550) */
    apr_uint32_t jitter;
    /** last SR packet from this source */
    apr_uint32_t lsr;
    /** delay since last SR packet */
    apr_uint32_t dlsr;
};



/** Reset RTCP SR statistics */
static APR_INLINE void mpf_rtcp_sr_stat_reset(rtcp_sr_stat_t *sr_stat)
{
    memset(sr_stat,0,sizeof(rtcp_sr_stat_t));
}

/** Reset RTCP RR statistics */
static APR_INLINE void mpf_rtcp_rr_stat_reset(rtcp_rr_stat_t *rr_stat)
{
    memset(rr_stat,0,sizeof(rtcp_rr_stat_t));
}

/** Reset RTP receiver statistics */
static APR_INLINE void mpf_rtp_rx_stat_reset(rtp_rx_stat_t *rx_stat)
{
    memset(rx_stat,0,sizeof(rtp_rx_stat_t));
}

APT_END_EXTERN_C

#endif /* MPF_RTP_STAT_H */