/*

 * Copyright (c) 2004-2006 Maxim Sobolev <sobomax@FreeBSD.org>

 * Copyright (c) 2006-2015 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 <stddef.h>

#include <stdint.h>

#include <stdlib.h>

#include "config.h"

#include "rtpp_cfg.h"

#include "rtpp_debug.h"

#include "rtpp_log.h"

#include "rtpp_types.h"

#include "rtpp_genuid.h"

#include "rtpp_mallocs.h"

#include "rtpp_pcount.h"

#include "rtpp_codeptr.h"

#include "rtpp_refcnt.h"

#include "rtpp_log_obj.h"

#include "rtpp_weakref.h"

#include "rtpp_time.h"

#include "rtpp_stream.h"

#include "rtpp_pipe.h"

#include "rtpp_pipe_fin.h"

#include "rtpp_ttl.h"

#include "rtpp_math.h"

#include "rtpp_acct_pipe.h"

#include "rtpp_pcnt_strm.h"

#include "rtpp_pcnts_strm.h"

#include "rtpp_stats.h"

#include "rtpp_refcnt.h"

#include "rtpp_session.h"

#include "advanced/pproc_manager.h"

struct rtpp_pipe_priv

{

    struct rtpp_pipe pub;

    struct rtpp_weakref *streams_wrt;

    int pipe_type;

};

static void rtpp_pipe_dtor(struct rtpp_pipe_priv *);

static int rtpp_pipe_get_ttl(struct rtpp_pipe *);

static void rtpp_pipe_decr_ttl(struct rtpp_pipe *);

static void rtpp_pipe_get_stats(struct rtpp_pipe *, struct rtpp_acct_pipe *);

static void rtpp_pipe_upd_cntrs(struct rtpp_pipe *, struct rtpp_acct_pipe *);

#define NO_MED_NM(t) (((t) == PIPE_RTP) ? "nsess_nortp" : "nsess_nortcp")

#define OW_MED_NM(t) (((t) == PIPE_RTP) ? "nsess_owrtp" : "nsess_owrtcp")

#define MT2RT_NZ(mt) ((mt).wall)

#define DRTN_NZ(bmt, emt) ((emt).mono == 0.0 || (bmt).mono == 0.0 ? 0.0 : ((emt).mono - (bmt).mono))

DEFINE_SMETHODS(rtpp_pipe,

    .get_ttl = &rtpp_pipe_get_ttl,

    .decr_ttl = &rtpp_pipe_decr_ttl,

    .get_stats = &rtpp_pipe_get_stats,

    .upd_cntrs = &rtpp_pipe_upd_cntrs,

);

struct rtpp_pipe *

rtpp_pipe_ctor(const struct r_pipe_ctor_args *ap)

{

    struct rtpp_pipe_priv *pvt;

    const struct rtpp_cfg *cfs = ap->session_cap->cfs;

    int i;

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

    if (pvt == NULL) {

        goto e0;

    }

    RTPP_OBJ_BORROW_s(&pvt->pub, ap->log);

    if (ap->pipe_type == PIPE_RTP) {

        pvt->streams_wrt = cfs->rtp_streams_wrt;

    } else {

        pvt->streams_wrt = cfs->rtcp_streams_wrt;

    }

    pvt->pub.ppuid = CALL_SMETHOD(cfs->guid, gen);

    struct r_stream_ctor_args rsca = {

        .pipe_cap = ap,

    };

    for (i = 0; i < 2; i++) {

        rsca.side = i;

        pvt->pub.stream[i] = rtpp_stream_ctor(&rsca);

        if (pvt->pub.stream[i] == NULL) {

            goto e1;

        }

        RTPP_OBJ_DTOR_ATTACH_OBJ_s(&pvt->pub, pvt->pub.stream[i]);

        if (CALL_SMETHOD(pvt->streams_wrt, reg, pvt->pub.stream[i]->rcnt,

          pvt->pub.stream[i]->stuid) != 0) {

            goto e1;

        }

    }

    if (CALL_SMETHOD(pvt->pub.stream[0], link_sender, pvt->pub.stream[1]) != 0)

        goto e1;

    if (CALL_SMETHOD(pvt->pub.stream[1], link_sender, pvt->pub.stream[0]) != 0)

        goto e1;

    pvt->pub.pcount = rtpp_pcount_ctor();

    if (pvt->pub.pcount == NULL) {

        goto e1;

    }

    RTPP_OBJ_DTOR_ATTACH_OBJ_s(&pvt->pub, pvt->pub.pcount);

    for (i = 0; i < 2; i++) {

        RTPP_OBJ_BORROW_s(pvt->pub.stream[i], pvt->pub.pcount);

        pvt->pub.stream[i]->pcount = pvt->pub.pcount;

    }

    pvt->pub.stream[0]->pproc_manager->reverse = pvt->pub.stream[1]->pproc_manager;

    RTPP_OBJ_BORROW_s(&pvt->pub, pvt->pub.stream[1]->pproc_manager);

    pvt->pub.stream[1]->pproc_manager->reverse = pvt->pub.stream[0]->pproc_manager;

    RTPP_OBJ_BORROW_s(&pvt->pub, pvt->pub.stream[0]->pproc_manager);

    pvt->pipe_type = ap->pipe_type;

    pvt->pub.rtpp_stats = cfs->rtpp_stats;

    pvt->pub.log = ap->log;

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

#if defined(RTPP_DEBUG)

    RTPP_OBJ_DTOR_ATTACH_s(&pvt->pub, rtpp_pipe_fin, &(pvt->pub));

#endif

    return (&pvt->pub);

e1:

    for (i = 0; i < 2; i++)

        if (pvt->pub.stream[i] != NULL)

            CALL_SMETHOD(pvt->pub.stream[i], unreg);

    RTPP_OBJ_DECREF(&(pvt->pub));

e0:

    return (NULL);

}

static void

rtpp_pipe_dtor(struct rtpp_pipe_priv *pvt)

{

    int i;

    for (i = 0; i < 2; i++) {

        CALL_SMETHOD(pvt->pub.stream[i], unreg);

    }

}

static int

rtpp_pipe_get_ttl(struct rtpp_pipe *self)

{

    int ttls[2];

    ttls[0] = CALL_SMETHOD(self->stream[0]->ttl, get_remaining);

    ttls[1] = CALL_SMETHOD(self->stream[1]->ttl, get_remaining);

    return (MIN(ttls[0], ttls[1]));

}

static void

rtpp_pipe_decr_ttl(struct rtpp_pipe *self)

{

    CALL_SMETHOD(self->stream[0]->ttl, decr);

    if (self->stream[1]->ttl == self->stream[0]->ttl)

        return;

    CALL_SMETHOD(self->stream[1]->ttl, decr);

}

static void

rtpp_pipe_get_stats(struct rtpp_pipe *self, struct rtpp_acct_pipe *rapp)

{

    struct rtpp_pipe_priv *pvt;

    PUB2PVT(self, pvt);

    CALL_SMETHOD(self->pcount, get_stats, rapp->pcnts);

    CALL_SMETHOD(self->stream[0], get_stats, &rapp->o.hld_stat);

    CALL_SMETHOD(self->stream[1], get_stats, &rapp->a.hld_stat);

    CALL_SMETHOD(self->stream[0]->pcnt_strm, get_stats, rapp->o.ps);

    CALL_SMETHOD(self->stream[1]->pcnt_strm, get_stats, rapp->a.ps);

    rapp->o.rem_addr = CALL_SMETHOD(self->stream[0], get_rem_addr, 1);

    rapp->a.rem_addr = CALL_SMETHOD(self->stream[1], get_rem_addr, 1);

    RTPP_LOG(self->log, RTPP_LOG_INFO, "%s stats: %lu in from callee, %lu "

      "in from caller, %lu relayed, %lu dropped, %lu ignored",

      PP_NAME(pvt->pipe_type), rapp->o.ps->npkts_in,

      rapp->a.ps->npkts_in, rapp->pcnts->nrelayed, rapp->pcnts->ndropped,

      rapp->pcnts->nignored);

    if (rapp->pcnts->ndropped > 0) {

        CALL_SMETHOD(self->pcount, log_drops, self->log);

    }

    if (pvt->pipe_type != PIPE_RTP) {

        return;

    }

    if (rapp->o.ps->first_pkt_rcv.mono > 0.0) {

        RTPP_LOG(self->log, RTPP_LOG_INFO, "RTP times: caller: first in at %f, "

          "duration %f, longest IPI %f", MT2RT_NZ(rapp->o.ps->first_pkt_rcv),

          DRTN_NZ(rapp->o.ps->first_pkt_rcv, rapp->o.ps->last_pkt_rcv),

          rapp->o.ps->longest_ipi);

    }

    if (rapp->a.ps->first_pkt_rcv.mono > 0.0) {

        RTPP_LOG(self->log, RTPP_LOG_INFO, "RTP times: callee: first in at %f, "

          "duration %f, longest IPI %f", MT2RT_NZ(rapp->a.ps->first_pkt_rcv),

          DRTN_NZ(rapp->a.ps->first_pkt_rcv, rapp->a.ps->last_pkt_rcv),

          rapp->a.ps->longest_ipi);

    }

}

static void

rtpp_pipe_upd_cntrs(struct rtpp_pipe *self, struct rtpp_acct_pipe *rapp)

{

    struct rtpp_pipe_priv *pvt;

    PUB2PVT(self, pvt);

    if (rapp->o.ps->npkts_in == 0 && rapp->a.ps->npkts_in == 0) {

        CALL_SMETHOD(self->rtpp_stats, updatebyname, NO_MED_NM(pvt->pipe_type),

          1);

    } else if (rapp->o.ps->npkts_in == 0 || rapp->a.ps->npkts_in == 0) {

        CALL_SMETHOD(self->rtpp_stats, updatebyname, OW_MED_NM(pvt->pipe_type),

          1);

    }

}