/*

 * Copyright (c) 2015 Sippy Software, Inc., http://www.sippysoft.com

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 */

#include <sys/types.h>

#include <netinet/in.h>

#include <stddef.h>

#include <stdlib.h>

#include <string.h>

#include "rtpp_ssrc.h"

#include "rtpa_stats.h"

#include "rtpp_types.h"

#include "rtpp_refcnt.h"

#include "rtpp_log_obj.h"

#include "rtp.h"

#include "rtpp_time.h"

#include "rtp_packet.h"

#include "rtp_analyze.h"

#include "rtpp_analyzer.h"

#include "rtpp_analyzer_fin.h"

#include "rtpp_mallocs.h"

struct rtpp_analyzer_priv {

    struct rtpp_analyzer pub;

    struct rtpp_session_stat rstat;

    uint32_t pecount;

    uint32_t aecount;

    struct rtpp_log *log;

};

static enum update_rtpp_stats_rval rtpp_analyzer_update(struct rtpp_analyzer *,

  struct rtp_packet *);

static void rtpp_analyzer_get_stats(struct rtpp_analyzer *,

  struct rtpa_stats *);

static int rtpp_analyzer_get_jstats(struct rtpp_analyzer *,

  struct rtpa_stats_jitter *);

static void rtpp_analyzer_dtor(struct rtpp_analyzer_priv *);

DEFINE_SMETHODS(rtpp_analyzer,

    .update = &rtpp_analyzer_update,

    .get_stats = &rtpp_analyzer_get_stats,

    .get_jstats = &rtpp_analyzer_get_jstats,

);

struct rtpp_analyzer *

rtpp_analyzer_ctor(struct rtpp_log *log)

{

    struct rtpp_analyzer_priv *pvt;

    struct rtpp_analyzer *rap;

    pvt = rtpp_rzmalloc(sizeof(struct rtpp_analyzer_priv), PVT_RCOFFS(pvt));

    if (pvt == NULL) {

        return (NULL);

    }

    rap = &pvt->pub;

    if (rtpp_stats_init(&pvt->rstat) != 0) {

        goto e0;

    }

    pvt->log = log;

    RTPP_OBJ_INCREF(log);

    PUBINST_FININIT(&pvt->pub, pvt, rtpp_analyzer_dtor);

    return (rap);

e0:

    RTPP_OBJ_DECREF(&(pvt->pub));

    free(pvt);

    return (NULL);

}

static enum update_rtpp_stats_rval

rtpp_analyzer_update(struct rtpp_analyzer *rap, struct rtp_packet *pkt)

{

    struct rtpp_analyzer_priv *pvt;

    enum update_rtpp_stats_rval rval;

    PUB2PVT(rap, pvt);

    if (rtp_packet_parse(pkt) != RTP_PARSER_OK) {

        pvt->pecount++;

        return (UPDATE_ERR);

    }

    rval = update_rtpp_stats(pvt->log, &(pvt->rstat), &(pkt->data.header),

      pkt->parsed, pkt->rtime.mono);

    if (rval == UPDATE_ERR) {

        pvt->aecount++;

    }

    pvt->rstat.last.pt = pkt->data.header.pt;

    return (rval);

}

static void

rtpp_analyzer_get_stats(struct rtpp_analyzer *rap, struct rtpa_stats *rsp)

{

    struct rtpp_session_stat ostat;

    struct rtpp_analyzer_priv *pvt;

    PUB2PVT(rap, pvt);

    rsp->pecount = pvt->pecount;

    rsp->aecount = pvt->aecount;

    memset(&ostat, '\0', sizeof(ostat));

    update_rtpp_totals(&(pvt->rstat), &ostat);

    rsp->psent = ostat.psent;

    rsp->precvd = ostat.precvd;

    rsp->pdups = ostat.duplicates;

    rsp->ssrc_changes = pvt->rstat.ssrc_changes;

    rsp->last_ssrc = pvt->rstat.last.ssrc;

    rsp->plost = ostat.psent - ostat.precvd;

    if (pvt->rstat.last.pt != PT_UNKN) {

        rsp->last_pt = pvt->rstat.last.pt;

    } else {

        rsp->last_pt = -1;

    }

}

static int

rtpp_analyzer_get_jstats(struct rtpp_analyzer *rap,

  struct rtpa_stats_jitter *jrsp)

{

    struct rtpp_analyzer_priv *pvt;

    int rval;

    PUB2PVT(rap, pvt);

    rval = get_jitter_stats(pvt->rstat.jdata, jrsp, pvt->log);

    return (rval);

}

static void

rtpp_analyzer_dtor(struct rtpp_analyzer_priv *pvt)

{

    rtpp_analyzer_fin(&(pvt->pub));

    rtpp_stats_destroy(&pvt->rstat);

    RTPP_OBJ_DECREF(pvt->log);

    free(pvt);

}