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/* -*- C++ -*- */
// $Id$
/*-
* Copyright (c) 1993-1994 The Regents of the University of California.
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and the Network Research Group at
* Lawrence Berkeley Laboratory.
* 4. Neither the name of the University nor of the Laboratory may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*/
// ============================================================================
//
// = LIBRARY
// ORBSVCS AVStreams
//
// = FILENAME
// RTCP.h
//
// = AUTHOR
// Nagarajan Surendran <naga@cs.wustl.edu>
//
//
// ============================================================================
#ifndef TAO_AV_RTCP_H
#define TAO_AV_RTCP_H
#include "source.h"
#include "AVStreams_i.h"
#include <math.h>
#include <stdlib.h>
// TAO_AV_RTP_State
class TAO_AV_RTP_State
{
public:
TAO_AV_RTP_State (void);
int bad_version_;
u_int badoptions_;
u_int badfmt_;
u_int badext_;
u_int nrunt_;
ACE_UINT32 last_np_;
ACE_UINT32 sdes_seq_;
double rtcp_inv_bw_;
double rtcp_avg_size_; /* (estimated) average size of rtcp packets */
double rint_; /* current session report rate (in ms) */
int confid_;
u_char* pktbuf_;
};
class TAO_AV_RTCP_Flow_Handler
{
public:
TAO_AV_RTCP_Flow_Handler (ACE_Reactor *reactor,
TAO_Base_StreamEndPoint *endpoint,
const char *flowname);
virtual ~TAO_AV_RTCP_Flow_Handler (void);
void init (void);
// initialize the timer.
virtual ACE_Event_Handler *event_handler (void) = 0;
void schedule (int value);
TAO_AV_SourceManager *source_manager (void);
TAO_AV_RTP_State *state (void);
TAO_Base_StreamEndPoint *endpoint (void);
protected:
TAO_AV_SourceManager *source_manager_;
TAO_AV_RTP_State state_;
ACE_Reactor *reactor_;
TAO_Base_StreamEndPoint *endpoint_;
CORBA::String_var flowname_;
};
class TAO_AV_RTCP_UDP_Flow_Handler
:public TAO_AV_RTCP_Flow_Handler,
public TAO_AV_UDP_Flow_Handler
{
public:
TAO_AV_RTCP_UDP_Flow_Handler (ACE_Reactor *reactor,
TAO_Base_StreamEndPoint *endpoint,
const char *flowname);
virtual ~TAO_AV_RTCP_UDP_Flow_Handler (void);
virtual ACE_Event_Handler *event_handler (void);
virtual int handle_input (ACE_HANDLE fd);
virtual int handle_timeout (const ACE_Time_Value &tv,
const void *arg = 0);
};
class TAO_AV_RTCP_UDP_MCast_Flow_Handler
:public TAO_AV_RTCP_Flow_Handler,
public TAO_AV_UDP_MCast_Flow_Handler
{
public:
TAO_AV_RTCP_UDP_MCast_Flow_Handler (ACE_Reactor *reactor,
TAO_Base_StreamEndPoint *endpoint,
const char *flowname);
virtual ~TAO_AV_RTCP_UDP_MCast_Flow_Handler (void);
virtual ACE_Event_Handler *event_handler (void);
virtual int handle_input (ACE_HANDLE fd);
virtual int handle_timeout (const ACE_Time_Value &tv,
const void *arg = 0);
};
class TAO_AV_RTCP
{
public:
struct rtcphdr
{
ACE_UINT16 rh_flags; /* T:2 P:1 CNT:5 PT:8 */
ACE_UINT16 rh_len; /* length of message (in bytes) */
ACE_UINT32 rh_ssrc; /* synchronization src id */
};
typedef struct
{
ACE_UINT32 upper; /* more significant 32 bits */
ACE_UINT32 lower; /* less significant 32 bits */
} ntp64;
/*
* Sender report.
*/
struct rtcp_sr {
ntp64 sr_ntp; /* 64-bit ntp timestamp */
ACE_UINT32 sr_ts; /* reference media timestamp */
ACE_UINT32 sr_np; /* no. packets sent */
ACE_UINT32 sr_nb; /* no. bytes sent */
};
/*
* Receiver report.
* Time stamps are middle 32-bits of ntp timestamp.
*/
struct rtcp_rr {
ACE_UINT32 rr_srcid; /* sender being reported */
ACE_UINT32 rr_loss; /* loss stats (8:fraction, 24:cumulative)*/
ACE_UINT32 rr_ehsr; /* ext. highest seqno received */
ACE_UINT32 rr_dv; /* jitter (delay variance) */
ACE_UINT32 rr_lsr; /* orig. ts from last rr from this src */
ACE_UINT32 rr_dlsr; /* time from recpt of last rr to xmit time */
};
static int handle_input (TAO_AV_Transport *transport,
rtcphdr &header,
TAO_AV_SourceManager *source_manager,
TAO_AV_RTP_State *state);
static int build_bye (rtcphdr* rh,
TAO_AV_Source& local);
static int build_sdes (rtcphdr* rh,
TAO_AV_Source& s,
TAO_AV_RTP_State *state);
static u_char* build_sdes_item (u_char* p,
int code,
TAO_AV_Source&);
static void parse_sr (rtcphdr* rh,
int flags,
u_char* ep,
TAO_AV_Source* ps,
ACE_UINT32 addr,
TAO_AV_SourceManager *source_manager);
static void parse_rr (rtcphdr* rh,
int flags,
u_char* ep,
TAO_AV_Source* ps,
ACE_UINT32 addr,
TAO_AV_SourceManager *source_manager);
static void parse_rr_records (ACE_UINT32 ssrc,
rtcp_rr* r,
int cnt,
const u_char* ep,
ACE_UINT32 addr);
static int sdesbody (ACE_UINT32* p,
u_char* ep,
TAO_AV_Source* ps,
ACE_UINT32 addr,
ACE_UINT32 ssrc,
TAO_AV_SourceManager *source_manager);
static void parse_sdes (rtcphdr* rh,
int flags,
u_char* ep,
TAO_AV_Source* ps,
ACE_UINT32 addr,
ACE_UINT32 ssrc,
TAO_AV_SourceManager *source_manager);
static void parse_bye (rtcphdr* rh,
int flags,
u_char* ep,
TAO_AV_Source* ps,
TAO_AV_SourceManager *source_manager);
static void send_report (int bye,
TAO_AV_Transport *transport,
TAO_AV_SourceManager *source_manager,
TAO_AV_RTP_State *state,
TAO_AV_RTCP_Flow_Handler *handler);
static ACE_UINT32 alloc_srcid (ACE_UINT32 addr);
typedef ACE_Hash_Map_Manager <TAO_String_Hash_Key,TAO_AV_RTCP_UDP_MCast_Flow_Handler*,ACE_Null_Mutex> RTCP_MCast_Map;
typedef ACE_Hash_Map_Manager <TAO_String_Hash_Key,TAO_AV_RTCP_UDP_Flow_Handler*,ACE_Null_Mutex> RTCP_UDP_Map;
static RTCP_MCast_Map rtcp_mcast_map_;
static RTCP_UDP_Map rtcp_udp_map_;
};
#endif /* TAO_AV_RTCP_H */
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