+++ /dev/null
-/*****************************************************************************
- * rtcp.c: RTP/RTCP source file
- *****************************************************************************
- * Copyright (C) 2005-2007 M2X
- *
- * $Id$
- *
- * Authors: Jean-Paul Saman <jpsaman #_at_# videolan dot org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
-
-#include <netinet/in.h>
-#include <sys/time.h>
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include <vlc_common.h>
-#include <vlc_bits.h>
-#include <vlc_block.h>
-
-#include "rtp.h"
-#include "rtcp.h"
-
-void send_RTCP( vlc_object_t *p_this, rtcp_event_t );
-void rtcp_schedule( vlc_object_t *p_this, mtime_t, rtcp_event_t );
-
-/* SDES support functions */
-static int SDES_client_item_add( rtcp_client_t *p_client, int i_item, char *psz_name )
-{
- rtcp_SDES_item_t *p_item = NULL;
-
- p_item = (rtcp_SDES_item_t *) malloc( sizeof( rtcp_SDES_item_t ) );
- if( !p_item )
- return VLC_ENOMEM;
- p_item->u_type = i_item;
- p_item->psz_data = strdup( psz_name );
- p_item->i_index = p_client->i_items + 1;;
- INSERT_ELEM( p_client->pp_sdes, p_client->i_items,
- p_item->i_index, p_item );
- return VLC_EGENERIC;
-}
-
-static int SDES_client_item_del( rtcp_client_t *p_client )
-{
- uint32_t i = 0;
-
- for( i=0; i < p_client->i_items; i++ )
- {
- rtcp_SDES_item_t *p_old = p_client->pp_sdes[i];
- REMOVE_ELEM( p_client->pp_sdes, p_client->i_items, i );
- p_client->i_items--;
- free( p_old->psz_data );
- free( p_old );
- }
- return VLC_SUCCESS;
-}
-
-int rtcp_add_client( vlc_object_t *p_this, uint32_t u_ssrc, uint32_t *i_pos )
-{
- rtcp_t *p_rtcp = (rtcp_t *) p_this;
- rtcp_client_t *p_client = NULL;
-
- vlc_object_lock( p_rtcp );
- p_client = (rtcp_client_t*) malloc( sizeof(rtcp_client_t) );
- if( !p_client )
- return VLC_ENOMEM;
- p_client->i_index = p_rtcp->i_clients + 1;
- p_client->b_deleted = false;
- *i_pos = p_client->i_index ;
- INSERT_ELEM( p_rtcp->pp_clients, p_rtcp->i_clients,
- p_client->i_index, p_client );
- p_rtcp->i_clients++;
- p_rtcp->u_clients++;
- vlc_object_unlock( p_rtcp );
- return VLC_SUCCESS;
-}
-
-int rtcp_del_client( vlc_object_t *p_this, uint32_t u_ssrc )
-{
- rtcp_t *p_rtcp = (rtcp_t *) p_this;
- uint32_t i_pos = 0;
-
- vlc_object_lock( p_rtcp );
- if( p_rtcp->pf_find_client( p_this, u_ssrc, &i_pos ) == VLC_SUCCESS )
- {
- rtcp_client_t *p_old = p_rtcp->pp_clients[i_pos];
-
- p_old->b_deleted = true;
- p_old->i_timeout = 5 * (p_rtcp->i_date - p_rtcp->i_last_date) +
- p_rtcp->i_next_date;
- p_rtcp->u_clients--;
- /* BYE message is sent by rtcp_destroy_client() */
- }
- vlc_object_unlock( p_rtcp );
- return VLC_SUCCESS;
-}
-
-/* rtcp_cleanup_clients should not be called too often */
-int rtcp_cleanup_clients( vlc_object_t *p_this )
-{
- rtcp_t *p_rtcp = (rtcp_t *) p_this;
- uint32_t i = 0;
-
- vlc_object_lock( p_rtcp );
- for( i=0; i < p_rtcp->i_clients; i++ )
- {
- rtcp_client_t *p_old = p_rtcp->pp_clients[i];
-
- if( p_old->b_deleted &&
- (p_old->i_timeout > mdate()) )
- {
- REMOVE_ELEM( p_rtcp->pp_clients, p_rtcp->i_clients, i );
- p_rtcp->i_clients--;
- SDES_client_item_del( p_old );
- free( p_old );
- }
- }
- vlc_object_unlock( p_rtcp );
- return VLC_SUCCESS;
-}
-
-/* Close communication with clients and release allocated objects */
-int rtcp_destroy_clients( vlc_object_t *p_this )
-{
- rtcp_t *p_rtcp = (rtcp_t *) p_this;
- uint32_t i = 0;
-
- for( i=0; i < p_rtcp->i_clients; i++ )
- {
- rtcp_pkt_t *pkt = NULL;
- rtcp_client_t *p_old = p_rtcp->pp_clients[i];
-
- p_rtcp->pf_del_client( p_this, p_old->u_ssrc );
- pkt = rtcp_pkt_new( p_this, RTCP_BYE );
- if( pkt )
- {
- block_t *p_block = NULL;
- p_block = rtcp_encode_BYE( p_this, pkt, strdup("server is leaving") );
- /* FIXME:
- * if( p_block )
- * send_RTCP( p_this, p_block );
- */
- }
-
- }
- /* wait till all clients have been signalled */
- while( p_rtcp->i_clients != 0 )
- {
- p_rtcp->pf_cleanup_clients( p_this );
- msleep( 500 );
- }
- return VLC_SUCCESS;
-}
-
-/* rtcp_find_client should be called with the object lock held.
- * vlc_mutex_lock( &p_rtcp->obj_lock );
- */
-int rtcp_find_client( vlc_object_t *p_this, uint32_t u_ssrc, uint32_t *i_pos )
-{
- rtcp_t *p_rtcp = (rtcp_t *) p_this;
- uint32_t i = 0;
-
- for( i=0; i < p_rtcp->i_clients; i++ )
- {
- if( p_rtcp->pp_clients[i]->u_ssrc == u_ssrc )
- {
- *i_pos = i;
- return VLC_SUCCESS;
- }
- }
- *i_pos = -1;
- return VLC_EGENERIC;
-}
-
-/*--------------------------------------------------------------------------
- * rtcp_interval - Calculate the interval in seconds for sending RTCP packets.
- *--------------------------------------------------------------------------
- */
-uint64_t rtcp_interval( vlc_object_t *p_this, uint64_t u_bandwidth, uint32_t u_ssrc,
- bool b_sender, bool b_first )
-{
- rtcp_t *p_rtcp = (rtcp_t *) p_this;
- rtcp_client_t *p_client = NULL;
- uint32_t i_rtcp_min = 5; /* seconds */
- uint32_t i_pos = 0;
- double i_bandwidth = u_bandwidth;
- const double i_compensation = 2.71828 - 1.5;
- double i_interval = 0;
- int n = p_rtcp->i_clients;
-
- if( b_first )
- i_rtcp_min = (i_rtcp_min >> 1);
-
- if( (double)(p_rtcp->u_active) <= (double)(p_rtcp->u_clients * 0.25) )
- {
- if( b_sender )
- {
- i_bandwidth = i_bandwidth * 0.25;
- n = p_rtcp->u_active;
- }
- else
- {
- i_bandwidth = i_bandwidth * ( 1 - 0.25 );
- n = n - p_rtcp->u_active;
- }
- }
- /* calculate average time between reports */
- p_client = p_rtcp->pf_find_client( p_this, u_ssrc, &i_pos );
- if( !p_client )
- return -1;
-
- i_interval = p_client->p_stats->u_avg_pkt_size * ( n / i_bandwidth );
- if( i_interval < i_rtcp_min )
- i_interval = i_rtcp_min;
- i_interval = i_interval * ( drand48() + 0.5 );
- i_interval = (double) (i_interval / i_compensation);
-
- return (uint64_t)i_interval;
-}
-
-/*--------------------------------------------------------------------------
- * rtcp_expire - decides to sent an RTCP report or a BYE record
- *--------------------------------------------------------------------------
- */
-void rtcp_expire( vlc_object_t *p_this, rtcp_event_t rtcp_event, uint64_t u_bandwidth,
- uint32_t u_ssrc, bool b_sender, bool *b_first )
-{
- rtcp_t *p_rtcp = (rtcp_t *) p_this;
- rtcp_client_t *p_client = NULL;
- rtcp_stats_t *p_stats = NULL;
- mtime_t i_interval = 0;
- uint32_t i_pos = 0;
-
- p_client = p_rtcp->pf_find_client( p_this, u_ssrc, &i_pos );
- if( !p_client )
- return;
- p_stats = (rtcp_stats_t*) p_client->p_stats;
- i_interval = (mtime_t) rtcp_interval( p_this, u_bandwidth,
- u_ssrc, b_sender, *b_first );
- p_rtcp->i_next_date = p_rtcp->i_last_date + i_interval;
-
- switch( rtcp_event )
- {
- case EVENT_BYE:
- if( p_rtcp->i_next_date <= p_rtcp->i_date )
- send_RTCP( p_this, rtcp_event );
- else
- rtcp_schedule( p_this, p_rtcp->i_next_date, rtcp_event );
- break;
-
- case EVENT_REPORT:
- if( p_rtcp->i_next_date <= p_rtcp->i_date )
- {
- send_RTCP( p_this, rtcp_event );
-
- /* Magic numbers are from RFC 3550 page 92
- * 1.0/16.0 = 0.0625 and
- * 15.0/16.0 = 0.9375
- */
- p_stats->u_avg_pkt_size = (uint64_t)
- ( (double) ( (double)p_stats->u_sent_pkt_size / ((double)0.0625) ) +
- ( ((double)0.9357) * p_stats->u_avg_pkt_size ) );
-
- /* recalculate */
- p_rtcp->i_last_date = p_rtcp->i_date;
- i_interval = rtcp_interval( p_this, u_bandwidth,
- u_ssrc, b_sender, *b_first );
- rtcp_schedule( p_this, p_rtcp->i_next_date + i_interval, rtcp_event );
- *b_first = false;
- }
- else
- {
- rtcp_schedule( p_this, p_rtcp->i_next_date, rtcp_event );
- }
- break;
- }
- p_rtcp->i_date = p_rtcp->i_next_date;
-}
-
-/*--------------------------------------------------------------------------
- * Local functions prototoypes
- *--------------------------------------------------------------------------
- */
-static int rtcp_decode_SR( vlc_object_t *p_this, rtcp_pkt_t *p_pkt );
-static int rtcp_decode_RR( vlc_object_t *p_this, rtcp_pkt_t *p_pkt );
-static int rtcp_decode_SR( vlc_object_t *p_this, rtcp_pkt_t *p_pkt );
-static int rtcp_decode_SDES( vlc_object_t *p_this, rtcp_pkt_t *p_pkt );
-static int rtcp_decode_BYE( vlc_object_t *p_this, rtcp_pkt_t *p_pkt );
-static int rtcp_decode_APP( vlc_object_t *p_this, rtcp_pkt_t *p_pkt );
-
-/*--------------------------------------------------------------------------
- * Local functions
- *--------------------------------------------------------------------------
- */
-static int rtcp_decode_SR( vlc_object_t *p_this, rtcp_pkt_t *p_pkt )
-{
- rtcp_t *p_rtcp = (rtcp_t *) p_this;
- unsigned int i = 0;
-
- if( !p_pkt )
- return VLC_EGENERIC;
-
- msg_Dbg( p_this, "decoding record: SR" );
-
- /* parse sender info */
- p_pkt->u_payload_type = RTCP_SR;
- p_pkt->report.sr.ntp_timestampH = bs_read( p_rtcp->bs, 32 );
- p_pkt->report.sr.ntp_timestampL = bs_read( p_rtcp->bs, 32 );
- p_pkt->report.sr.rtp_timestamp = bs_read( p_rtcp->bs, 32 );
- p_pkt->report.sr.u_pkt_count = bs_read( p_rtcp->bs, 32 ); /*sender*/
- p_pkt->report.sr.u_octet_count = bs_read( p_rtcp->bs, 32 ); /*sender*/
-
- /* parse report block */
- for( i=0; i < p_pkt->u_report; i++ )
- {
- rtcp_client_t *p_client = NULL;
- uint32_t i_pos = 0;
- uint32_t u_ssrc = 0;
-
- u_ssrc = bs_read( p_rtcp->bs, 32 );
-
- if( p_rtcp->pf_find_client( p_this, u_ssrc, &i_pos ) == VLC_EGENERIC )
- {
- if( p_rtcp->pf_add_client( p_this, p_pkt->u_ssrc, &i_pos ) == VLC_EGENERIC )
- return VLC_ENOMEM;
- }
- vlc_object_lock( p_rtcp );
- p_client = p_rtcp->pp_clients[i_pos];
-
- p_client->p_stats->u_SR_received++;
- p_client->p_stats->u_pkt_count++;
- p_client->p_stats->u_octet_count++;
-
- msg_Dbg( p_this, "SR received %d, packet count %d, octect count %d, SSRC count %d",
- p_client->p_stats->u_SR_received,
- p_client->p_stats->u_pkt_count,
- p_client->p_stats->u_octet_count,
- p_pkt->u_ssrc );
-
- p_client->p_stats->u_fraction_lost = bs_read( p_rtcp->bs, 8 );
- p_client->p_stats->u_pkt_lost = bs_read( p_rtcp->bs, 24 );
- p_client->p_stats->u_highest_seq_no = bs_read( p_rtcp->bs, 32 );
- p_client->p_stats->u_jitter = bs_read( p_rtcp->bs, 32 );
- p_client->p_stats->u_last_SR = bs_read( p_rtcp->bs, 32 );
- p_client->p_stats->u_delay_since_last_SR = (mtime_t) bs_read( p_rtcp->bs, 32 );
-
- /* Magic numbers are from RFC 3550 page 92
- * 1.0/16.0 = 0.0625 and
- * 15.0/16.0 = 0.9375
- */
- p_client->p_stats->u_avg_pkt_size = (uint64_t)
- ( (double)((double)p_client->p_stats->u_sent_pkt_size * (double)(0.0625)) +
- ((double)(0.9375) * p_client->p_stats->u_avg_pkt_size) );
-
- msg_Dbg( p_this, "fract lost %d, packet lost %d, highest seqno %d, "
- "jitter %d, last SR %d, delay %lld",
- p_client->p_stats->u_fraction_lost,
- p_client->p_stats->u_pkt_lost,
- p_client->p_stats->u_highest_seq_no,
- p_client->p_stats->u_jitter,
- p_client->p_stats->u_last_SR,
- p_client->p_stats->u_delay_since_last_SR );
- p_client = NULL;
- vlc_object_unlock( p_rtcp );
- }
- return VLC_SUCCESS;
-}
-
-static int rtcp_decode_RR( vlc_object_t *p_this, rtcp_pkt_t *p_pkt )
-{
- rtcp_t *p_rtcp = (rtcp_t *) p_this;
- unsigned int i = 0;
-
- if( !p_pkt )
- return VLC_EGENERIC;
-
- msg_Dbg( p_this, "decoding record: RR" );
-
- for( i=0; i < p_pkt->u_report; i++ )
- {
- rtcp_client_t *p_client = NULL;
- uint32_t i_pos = 0;
- uint32_t u_ssrc = 0;
-
- u_ssrc = bs_read( p_rtcp->bs, 32 );
-
- if( p_rtcp->pf_find_client( p_this, u_ssrc, &i_pos ) == VLC_EGENERIC )
- {
- if( p_rtcp->pf_add_client( p_this, p_pkt->u_ssrc, &i_pos ) == VLC_EGENERIC )
- return VLC_ENOMEM;
- }
-
- vlc_object_lock( p_rtcp );
- p_client = p_rtcp->pp_clients[i_pos];
-
- p_client->p_stats->u_RR_received++;
- msg_Dbg( p_this, "RR received %d, SSRC %d",
- p_client->p_stats->u_RR_received, u_ssrc );
-
- p_client->p_stats->u_fraction_lost = bs_read( p_rtcp->bs, 8 );
- p_client->p_stats->u_pkt_lost = bs_read( p_rtcp->bs, 24 );
- p_client->p_stats->u_highest_seq_no = bs_read( p_rtcp->bs, 32 );
- p_client->p_stats->u_jitter = bs_read( p_rtcp->bs, 32 );
- p_client->p_stats->u_last_SR = bs_read( p_rtcp->bs, 32 );
- p_client->p_stats->u_delay_since_last_SR = (mtime_t) bs_read( p_rtcp->bs, 32 );
-
- /* Magic numbers are from RFC 3550 page 92
- * 1.0/16.0 = 0.0625 and
- * 15.0/16.0 = 0.9375
- */
- p_client->p_stats->u_avg_pkt_size = (uint64_t)
- ( (double)((double)p_client->p_stats->u_sent_pkt_size * (double)(0.0625)) +
- ((double)(0.9375) * p_client->p_stats->u_avg_pkt_size) );
-
- msg_Dbg( p_this, "fract lost %d, packet lost %d, highest seqno %d, "
- "jitter %d, last SR %d, delay %lld",
- p_client->p_stats->u_fraction_lost,
- p_client->p_stats->u_pkt_lost,
- p_client->p_stats->u_highest_seq_no,
- p_client->p_stats->u_jitter,
- p_client->p_stats->u_last_SR,
- p_client->p_stats->u_delay_since_last_SR );
- p_client = NULL;
- vlc_object_unlock( p_rtcp );
- }
- return VLC_SUCCESS;
-}
-
-static int rtcp_decode_SDES( vlc_object_t *p_this, rtcp_pkt_t *p_pkt )
-{
- rtcp_t *p_rtcp = (rtcp_t *) p_this;
- unsigned int i = 0;
-
- if( !p_pkt )
- return VLC_EGENERIC;
-
- msg_Dbg( p_this, "decoding record: SDES" );
-
- for( i = 0; i < p_pkt->u_report; i++ )
- {
- rtcp_client_t *p_client = NULL;
- uint32_t i_pos = 0;
- uint32_t u_ssrc = 0;
- uint8_t u_item = 0;
- uint8_t u_length = 0;
- int i = 0;
-
- u_ssrc = bs_read( p_rtcp->bs, 32 );
-
- if( p_rtcp->pf_find_client( p_this, u_ssrc, &i_pos ) == VLC_EGENERIC )
- {
- if( p_rtcp->pf_add_client( p_this, p_pkt->u_ssrc, &i_pos ) == VLC_EGENERIC )
- return VLC_ENOMEM;
- }
-
- vlc_object_lock( p_rtcp );
- p_client = p_rtcp->pp_clients[i_pos];
-
- u_item = bs_read( p_rtcp->bs, 8 );
- switch( u_item )
- {
- case RTCP_SDES_CNAME:
- case RTCP_SDES_NAME:
- case RTCP_SDES_EMAIL:
- case RTCP_SDES_PHONE:
- case RTCP_SDES_LOC:
- case RTCP_SDES_TOOL:
- case RTCP_SDES_NOTE:
- {
- char psz_name[255];
-
- u_length = bs_read( p_rtcp->bs, 8 );
- for( i = 0 ; i < u_length; i++ )
- {
- psz_name[i] = bs_read( p_rtcp->bs, 8 );
- }
- SDES_client_item_add( p_client, u_item, psz_name );
- }
- break;
-
- case RTCP_SDES_PRIV: /* ignoring these */
- {
- uint8_t u_prefix_len = 0;
- uint8_t u_length = 0;
- char psz_prefix_name[255];
- char psz_name[255];
-
- u_length = bs_read( p_rtcp->bs, 8 );
- u_prefix_len = bs_read( p_rtcp->bs, 8 );
- if( u_prefix_len > 254 )
- u_prefix_len = 254;
-
- for( i=0 ; i < u_prefix_len; i++ )
- {
- psz_prefix_name[i] = bs_read( p_rtcp->bs, 8 );
- }
- psz_prefix_name[255] = '\0';
- SDES_client_item_add( p_client, u_item, psz_prefix_name );
-
- for( i=0 ; i < u_length; i++ )
- {
- psz_name[i] = bs_read( p_rtcp->bs, 8 );
- }
- psz_name[255] = '\0';
- SDES_client_item_add( p_client, u_item, psz_name );
- }
- break;
-
- default:
- return VLC_EGENERIC;
- }
- /* Magic numbers are from RFC 3550 page 92
- * 1.0/16.0 = 0.0625 and
- * 15.0/16.0 = 0.9375
- */
- p_client->p_stats->u_avg_pkt_size = (uint64_t)
- ( (double)((double)p_client->p_stats->u_sent_pkt_size * (double)(0.0625)) +
- ((double)(0.9375) * p_client->p_stats->u_avg_pkt_size) );
-
- p_client = NULL;
- vlc_object_unlock( p_rtcp );
- }
- return VLC_SUCCESS;
-}
-
-static int rtcp_decode_BYE( vlc_object_t *p_this, rtcp_pkt_t *p_pkt )
-{
- rtcp_t *p_rtcp = (rtcp_t *) p_this;
- uint32_t u_ssrc = 0;
- uint8_t u_length = 0;
- int i = 0;
-
- if( !p_pkt )
- return VLC_EGENERIC;
-
- msg_Dbg( p_this, "decoding record: BYE" );
-
- u_ssrc = bs_read( p_rtcp->bs, 32 );
- p_rtcp->pf_del_client( p_this, u_ssrc );
- u_length = p_pkt->u_length-1;
- for( i = 0 ; i < u_length; i++ )
- {
- u_ssrc = bs_read( p_rtcp->bs, 8 );
- p_rtcp->pf_del_client( p_this, u_ssrc );
- }
- return VLC_SUCCESS;
-}
-
-static int rtcp_decode_APP( vlc_object_t *p_this, rtcp_pkt_t *p_pkt )
-{
- rtcp_t *p_rtcp = (rtcp_t *) p_this;
- rtcp_client_t *p_client = NULL;
- char psz_name[4];
- char* psz_data = NULL;
- uint32_t u_ssrc = 0;
- uint32_t i_pos = 0;
- uint32_t i = 0;
-
- if( !p_pkt )
- return VLC_EGENERIC;
-
- msg_Dbg( p_this, "decoding record: APP" );
-
- u_ssrc = bs_read( p_rtcp->bs, 32 );
-
- if( p_rtcp->pf_find_client( p_this, u_ssrc, &i_pos ) == VLC_EGENERIC )
- {
- if( p_rtcp->pf_add_client( p_this, p_pkt->u_ssrc, &i_pos ) == VLC_EGENERIC )
- return VLC_ENOMEM;
- }
-
- vlc_object_lock( p_rtcp );
- p_client = p_rtcp->pp_clients[i_pos];
-
- for( i = 0 ; i < 4; i++ )
- {
- psz_name[i] = bs_read( p_rtcp->bs, 8 );
- }
- psz_name[4] = '\0';
-
- p_pkt->u_payload_type = RTCP_APP;
- p_pkt->report.app.psz_prefix = strdup( psz_name );
- p_pkt->report.app.u_prefix_len = 4;
- p_pkt->u_length -= 4;
-
- psz_data = (char *) malloc( p_pkt->u_length );
- if( !psz_data ) {
- vlc_object_unlock( p_rtcp );
- return VLC_EGENERIC;
- }
-
- for( i = 0; i < p_pkt->u_length; i-- )
- {
- psz_data[i] = bs_read( p_rtcp->bs, 8 );
- }
- psz_data[p_pkt->u_length] = '\0';
-
- p_pkt->report.app.psz_data = strdup( psz_data );
- p_pkt->report.app.u_length = p_pkt->u_length;
-
- p_client = NULL;
- vlc_object_unlock( p_rtcp );
-
- /* Just ignore this packet */
- return VLC_SUCCESS;
-}
-
-/* Decode RTCP packet
- * Decode incoming RTCP packet and inspect the records types.
- */
-int rtcp_pkt_decode( vlc_object_t *p_this, rtcp_pkt_t *p_pkt, block_t *p_block )
-{
- rtcp_t *p_rtcp = (rtcp_t *) p_this;
-
- if( !p_pkt && !p_block )
- return VLC_EGENERIC;
-
- bs_init( p_rtcp->bs, p_block->p_buffer, p_block->i_buffer );
-
- p_pkt->u_version = bs_read( p_rtcp->bs, 2 );
- p_pkt->b_padding = bs_read( p_rtcp->bs, 1 ) ? true : false;
- p_pkt->u_report = bs_read( p_rtcp->bs, 5 );
- p_pkt->u_payload_type = bs_read( p_rtcp->bs, 8 );
- p_pkt->u_length = bs_read( p_rtcp->bs, 16 );
-
- if( p_pkt->u_payload_type != RTCP_SDES )
- p_pkt->u_ssrc = bs_read( p_rtcp->bs, 32 );
-
- msg_Dbg( p_this, "New RTCP packet: version %d, padding %s, count %d, "
- "type %d, length %d, SSRC %d",
- p_pkt->u_version,
- p_pkt->b_padding ? "true" : "false",
- p_pkt->u_report,
- p_pkt->u_payload_type,
- p_pkt->u_length,
- p_pkt->u_ssrc );
-
- while( !bs_eof( p_rtcp->bs ) )
- {
- uint32_t i_pos = 0;
-
- switch( p_pkt->u_payload_type )
- {
- case RTCP_SR:
- if( p_rtcp->pf_find_client( p_this, p_pkt->u_ssrc, &i_pos ) == VLC_EGENERIC )
- p_rtcp->pf_add_client( p_this, p_pkt->u_ssrc, &i_pos );
- rtcp_decode_SR( p_this, p_pkt );
- break;
-
- case RTCP_RR:
- if( p_rtcp->pf_find_client( p_this, p_pkt->u_ssrc, &i_pos ) == VLC_EGENERIC )
- p_rtcp->pf_add_client( p_this, p_pkt->u_ssrc, &i_pos );
- rtcp_decode_RR( p_this, p_pkt );
- break;
-
- case RTCP_SDES:
- if( p_rtcp->pf_find_client( p_this, p_pkt->u_ssrc, &i_pos ) == VLC_EGENERIC )
- p_rtcp->pf_add_client( p_this, p_pkt->u_ssrc, &i_pos );
- rtcp_decode_SDES( p_this, p_pkt );
- break;
-
- case RTCP_BYE:
- rtcp_decode_BYE( p_this, p_pkt );
-#if 0
- if( p_rtcp->pf_find_sender( p_this, pkt->u_ssrc, &i_pos ) == VLC_EGENERIC )
- p_rtcp->pf_del_sender( p_this, p_pkt->u_ssrc );
-#endif
- if( p_rtcp->pf_find_client( p_this, p_pkt->u_ssrc, &i_pos ) == VLC_EGENERIC )
- p_rtcp->pf_del_client( p_this, p_pkt->u_ssrc );
-
- if( p_rtcp->u_active < p_rtcp->u_members )
- {
- rtcp_event_t event = EVENT_BYE;
-
- p_rtcp->i_next_date = p_rtcp->i_date +
- (mtime_t) ( (p_rtcp->u_active / p_rtcp->u_members) *
- (p_rtcp->i_next_date - p_rtcp->i_date) );
- p_rtcp->i_last_date = p_rtcp->i_date -
- (mtime_t)
- ( (mtime_t)(p_rtcp->u_active / p_rtcp->u_members) *
- (p_rtcp->i_date - p_rtcp->i_last_date) );
- /* schedule for next period */
- rtcp_schedule( VLC_OBJECT(p_rtcp), p_rtcp->i_next_date, event );
- p_rtcp->u_members = p_rtcp->u_active;
- }
- else p_rtcp->u_members++;
- break;
-
- case RTCP_APP:
- if( p_rtcp->pf_find_client( p_this, p_pkt->u_ssrc, &i_pos ) == VLC_EGENERIC )
- p_rtcp->pf_add_client( p_this, p_pkt->u_ssrc, &i_pos );
- rtcp_decode_APP( p_this, p_pkt );
- break;
-
- default:
- return VLC_EGENERIC;
- }
- }
- return VLC_SUCCESS;
-}
-
-/*
- * Create RTCP records for reporting to server.
- */
-rtcp_pkt_t *rtcp_pkt_new( vlc_object_t *p_this, int type )
-{
- rtcp_pkt_t *p_pkt = NULL;
-
- p_pkt = (rtcp_pkt_t *) malloc( sizeof( rtcp_pkt_t ) );
- if( !p_pkt )
- return NULL;
-
- memset( p_pkt, 0 , sizeof( rtcp_pkt_t ) );
- p_pkt->u_version = 2;
- p_pkt->u_payload_type = type;
- p_pkt->u_length = RTCP_HEADER_LEN;
-
- switch( type )
- {
- case RTCP_SR:
- p_pkt->u_length += sizeof(rtcp_SR_t);
- break;
- case RTCP_RR:
- p_pkt->u_length += sizeof(rtcp_RR_t);
- break;
- case RTCP_SDES:
- p_pkt->u_length += sizeof(rtcp_SDES_t);
- if( p_pkt->report.sdes.pp_items )
- p_pkt->u_length += p_pkt->report.sdes.u_items;
- break;
- case RTCP_BYE:
- p_pkt->u_length += sizeof(rtcp_BYE_t);
- break;
- case RTCP_APP:
- p_pkt->u_length += sizeof(rtcp_APP_t);
- break;
- default:
- free(p_pkt);
- return NULL;
- }
- return p_pkt;
-}
-
-void rtcp_pkt_del( vlc_object_t *p_this, rtcp_pkt_t *p_pkt )
-{
- if( !p_pkt )
- return;
-
- switch( p_pkt->u_payload_type )
- {
- case RTCP_SR:
- case RTCP_RR:
- break;
- case RTCP_SDES:
- if( p_pkt->report.sdes.pp_items )
- {
- uint32_t i = 0;
-
- for( i = 0; i < p_pkt->report.sdes.u_items; i++ )
- {
- rtcp_SDES_item_t *p_old =
- p_pkt->report.sdes.pp_items[i];
- REMOVE_ELEM( p_pkt->report.sdes.pp_items,
- p_pkt->report.sdes.u_items, i );
- p_pkt->report.sdes.u_items--;
- if( p_old->psz_data )
- free( p_old->psz_data );
- free( p_old );
- }
- }
- break;
- case RTCP_BYE:
- break;
- case RTCP_APP:
- if( p_pkt->report.app.psz_prefix )
- free( p_pkt->report.app.psz_prefix );
- if( p_pkt->report.app.psz_data )
- free( p_pkt->report.app.psz_data );
- break;
- default:
- msg_Err( p_this, "unknown RTCP packet type %d: "
- "possible leaking of memory.",
- p_pkt->u_payload_type );
- break;
- }
- free( p_pkt );
-}
-
-block_t *rtcp_encode_SR( vlc_object_t *p_this, rtcp_pkt_t *p_pkt )
-{
- rtcp_t *p_rtcp = (rtcp_t *) p_this;
- mtime_t ntp_time;
- bs_t bits, *s = &bits;
- block_t *p_block = NULL;
- rtcp_stats_t *p_stats = NULL;
- rtcp_client_t *p_client = NULL;
- uint32_t i_pos = 0;
-
- if( p_pkt->u_payload_type != RTCP_SR )
- return NULL;
-
- /* FIXME: Maybe this should be a buffer pool instead */
- p_block = block_New( p_this, p_pkt->u_length );
- if( !p_block )
- return NULL;
-
- bs_init( s, p_block->p_buffer, p_block->i_buffer );
-
- /* Fill in header */
- bs_write( s, 2, p_pkt->u_version );
- bs_write( s, 1, 0 ); /* padding */
- bs_write( s, 5, p_pkt->u_report );
- bs_write( s, 8, p_pkt->u_payload_type );
- bs_write( s, 16, p_pkt->u_length );
- bs_write( s, 32, p_pkt->u_ssrc );
-
- /* sender info */
- ntp_time = mdate();
- bs_write( s, 32, ((unsigned int)(ntp_time>>32)) ); /* ntp_timestampH */
- bs_write( s, 32, ((unsigned int)ntp_time) );/* ntp_timestampL */
-
- /* FIXME: Make sure to generate a good RTP server timestamp.
- p_pkt->report.sr.rtp_timestamp = htonl(
- (unsigned int) ((double)ntp_time.tv_sec +
- (double)ntp_time.tv_usec/1000000.) * p_mux->rate
- + session->start_rtptime ); */
- bs_write( s, 32, p_pkt->report.sr.rtp_timestamp );
- bs_write( s, 32, p_pkt->report.sr.u_pkt_count );
- bs_write( s, 32, p_pkt->report.sr.u_octet_count );
-
- /* report block */
- if( p_rtcp->pf_find_client( p_this, p_pkt->u_ssrc, &i_pos ) == VLC_EGENERIC )
- {
- msg_Err( p_this, "SR: SSRC identifier doesn't exists", p_pkt->u_ssrc );
- free( p_block );
- return NULL;
- }
-
- vlc_object_lock( p_rtcp );
- p_client = p_rtcp->pp_clients[i_pos];
-
- p_stats = p_client->p_stats;
- if( !p_stats ) {
- msg_Err( p_this, "SR: SSRC identifier doesn't exists", p_pkt->u_ssrc );
- free( p_block );
- return NULL;
- }
- bs_write( s, 32, p_stats->l_dest_SSRC );
- bs_write( s, 8, p_stats->u_fraction_lost );
- bs_write( s, 24, p_stats->u_pkt_lost );
- bs_write( s, 32, p_stats->u_highest_seq_no );
- bs_write( s, 32, p_stats->u_jitter );
- bs_write( s, 32, p_stats->u_last_SR );
- bs_write( s, 32, p_stats->u_delay_since_last_SR );
-
- p_client = NULL;
- vlc_object_unlock( p_rtcp );
-
- /* possible SR extension */
- return p_block;
-}
-
-block_t *rtcp_encode_RR( vlc_object_t *p_this, rtcp_pkt_t *p_pkt )
-{
- rtcp_t *p_rtcp = (rtcp_t *) p_this;
- bs_t bits, *s = &bits;
- block_t *p_block = NULL;
- rtcp_stats_t *p_stats = NULL;
- rtcp_client_t *p_client = NULL;
- uint32_t i_pos = 0;
-
- if( p_pkt->u_payload_type != RTCP_RR )
- return NULL;
-
- /* FIXME: Maybe this should be a buffer pool instead */
- p_block = block_New( p_this, p_pkt->u_length );
- if( !p_block )
- return NULL;
-
- bs_init( s, p_block->p_buffer, p_block->i_buffer );
-
- /* Fill in header */
- bs_write( s, 2, p_pkt->u_version );
- bs_write( s, 1, 0 ); /* padding */
- bs_write( s, 5, p_pkt->u_report );
- bs_write( s, 8, p_pkt->u_payload_type );
- bs_write( s, 16, p_pkt->u_length );
- bs_write( s, 32, p_pkt->u_ssrc );
-
- /* report block */
- if( p_rtcp->pf_find_client( p_this, p_pkt->u_ssrc, &i_pos ) == VLC_EGENERIC )
- {
- msg_Err( p_this, "RR: SSRC identifier doesn't exists", p_pkt->u_ssrc );
- free( p_block );
- return NULL;
- }
-
- vlc_object_lock( p_rtcp );
- p_client = p_rtcp->pp_clients[i_pos];
-
- p_stats = p_client->p_stats;
- if( !p_stats ) {
- msg_Err( p_this, "RR: SSRC identifier doesn't exists", p_pkt->u_ssrc );
- free( p_block );
- return NULL;
- }
- bs_write( s, 32, p_stats->l_dest_SSRC );
- bs_write( s, 8, p_stats->u_fraction_lost );
- bs_write( s, 24, p_stats->u_pkt_lost );
- bs_write( s, 32, p_stats->u_highest_seq_no );
- bs_write( s, 32, p_stats->u_jitter );
- bs_write( s, 32, p_stats->u_last_RR );
- bs_write( s, 32, p_stats->u_delay_since_last_RR );
-
- p_client = NULL;
- vlc_object_unlock( p_rtcp );
-
- /* possible RR extension */
- return p_block;
-}
-
-block_t *rtcp_encode_SDES( vlc_object_t *p_this, rtcp_pkt_t *p_pkt )
-{
- bs_t bits, *s = &bits;
- block_t *p_block = NULL;
- uint32_t i_chunks;
-
- if( p_pkt->u_payload_type != RTCP_SDES )
- return NULL;
-
- /* FIXME: Maybe this should be a buffer pool instead */
- p_block = block_New( p_this, p_pkt->u_length );
- if( !p_block )
- return NULL;
-
- bs_init( s, p_block->p_buffer, p_block->i_buffer );
-
- /* Fill in header */
- bs_write( s, 2, p_pkt->u_version );
- bs_write( s, 1, 0 ); /* padding */
- bs_write( s, 5, p_pkt->u_report ); /* Number of SSRC/CSRC chunks */
- bs_write( s, 8, p_pkt->u_payload_type );
- bs_write( s, 16, p_pkt->u_length );
- bs_write( s, 32, p_pkt->u_ssrc );
-
- /* fill in record */
- for( i_chunks = 0; i_chunks < p_pkt->u_report; i_chunks++ )
- {
- uint32_t i_item;
-
- for( i_item = 0 ; i_item < p_pkt->report.sdes.u_items; i_item++ )
- {
- uint32_t i_count = strlen( p_pkt->report.sdes.pp_items[i_item]->psz_data );
- uint8_t u_octet = i_count / 8; /* Octect count ??*/
- rtcp_SDES_item_t *p_item = p_pkt->report.sdes.pp_items[i_item];
- uint32_t i_pos, i_pad, i_padding;
-
- bs_write( s, 8, p_item->u_type );
- bs_write( s, 8, u_octet );
-
- for( i_pos = 0; i_pos < i_count; i_pos++ )
- {
- /* FIXME: must be UTF 8 encoded */
- bs_write( s, 8, p_item->psz_data[i_pos] );
- }
-
- /* do we need padding to 32 bit boundary? */
- i_padding = 0;
- if( ((i_count + 2) % 4) != 0 )
- i_padding = (i_count + 2) - (((i_count + 2) % 4) << 2);
- for( i_pad = 0; i_pad < i_padding; i_pad++ )
- {
- bs_write( s, 8, 0 );
- }
- }
- }
- return p_block;
-}
-
-block_t *rtcp_encode_BYE( vlc_object_t *p_this, rtcp_pkt_t *p_pkt, char *psz_reason )
-{
- bs_t bits, *s = &bits;
- block_t *p_block = NULL;
- uint32_t i_count = strlen( psz_reason );
- uint8_t u_octet = i_count / 8; /* Octect count ??*/
- int32_t i_pos, i_pad, i_padding;
-
- if( p_pkt->u_payload_type != RTCP_BYE )
- return NULL;
-
- /* FIXME: Maybe this should be a buffer pool instead */
- p_block = block_New( p_this, p_pkt->u_length );
- if( !p_block )
- return NULL;
-
- bs_init( s, p_block->p_buffer, p_block->i_buffer );
-
- /* Fill in header */
- bs_write( s, 2, p_pkt->u_version );
- bs_write( s, 1, 0 ); /* padding */
- bs_write( s, 5, p_pkt->u_report ); /* Number of SSRC/CSRC chunks */
- bs_write( s, 8, p_pkt->u_payload_type );
- bs_write( s, 16, p_pkt->u_length );
- bs_write( s, 32, p_pkt->u_ssrc );
-
- /* Give reason for leaving */
- //FIXME: bs_write( s, 8, p_item->u_type );
- bs_write( s, 8, u_octet );
-
- for( i_pos = 0; i_pos < i_count; i_pos++ )
- {
- /* FIXME: must be UTF 8 encoded */
- bs_write( s, 8, psz_reason[i_pos] );
- }
-
- /* do we need padding to 32 bit boundary? */
- i_padding = 0;
- if( ((i_count + 2) % 4) != 0 )
- i_padding = (i_count + 2) - (((i_count + 2) % 4) << 2);
- for( i_pad = 0; i_pad < i_padding; i_pad++ )
- {
- bs_write( s, 8, 0 );
- }
- return p_block;
-}
+++ /dev/null
-/*****************************************************************************
- * rtcp.h: RTP/RTCP headerfile
- *****************************************************************************
- * Copyright (C) 2005-2007 M2X
- *
- * $Id$
- *
- * Authors: Jean-Paul Saman <jpsaman #_at_# videolan dot org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
-
-#ifndef _RTCP_H
-#define _RTCP_H 1
-
-/* RTCP packet types */
-#define RTCP_SR 200
-#define RTCP_RR 201
-#define RTCP_SDES 202
-#define RTCP_BYE 203
-#define RTCP_APP 204
-/* End of RTCP packet types */
-
-/* SDES type */
-#define RTCP_SDES_CNAME 1
-#define RTCP_SDES_NAME 2
-#define RTCP_SDES_EMAIL 3
-#define RTCP_SDES_PHONE 4
-#define RTCP_SDES_LOC 5
-#define RTCP_SDES_TOOL 6
-#define RTCP_SDES_NOTE 7
-#define RTCP_SDES_PRIV 8
-/* End of SDES type */
-
-#define RTCP_HEADER_LEN 3
-
-typedef enum rtcp_event_enum
-{
- EVENT_BYE,
- EVENT_REPORT
-
-} rtcp_event_t;
-
-typedef struct
-{
- uint32_t ntp_timestampH;
- uint32_t ntp_timestampL;
- uint32_t rtp_timestamp;
- uint32_t u_pkt_count;
- uint32_t u_octet_count;
-
-} rtcp_SR_t;
-
-typedef struct
-{
-
-} rtcp_RR_t;
-
-typedef struct SDES_item_t
-{
- uint32_t i_index; /*< index */
- uint8_t u_type; /*< type field */
- char *psz_data; /*< null terminated string */
-
-} rtcp_SDES_item_t;
-
-typedef struct
-{
- uint32_t u_length; /*< length of packet */
- uint32_t u_items; /*< number of SDES_items */
- rtcp_SDES_item_t **pp_items; /*< list of SDES_items */
-
-} rtcp_SDES_t;
-
-typedef struct
-{
- uint32_t u_length; /*< length of packet */
-
-} rtcp_BYE_t;
-
-typedef struct
-{
- uint32_t u_length; /*< length of packet */
- uint32_t u_prefix_len; /*< length of prefix data */
- unsigned char *psz_prefix;/*< prefix string (null terminated) */
- unsigned char *psz_data; /*< data string (null terminated) */
-
-} rtcp_APP_t;
-
-/**
- * structure rtcp_stats_t
- */
-typedef struct
-{
- uint32_t u_RR_received; /*< RR records received */
- uint32_t u_SR_received; /*< SR records received */
- uint64_t l_dest_SSRC; /*< SSRC of first source */
- uint32_t u_pkt_count; /*< count of packets received */
- uint32_t u_octet_count; /*< ? */
- uint32_t u_pkt_lost; /*< cumulative count of packets lost */
- uint8_t u_fraction_lost; /*< count of fractional packets lost */
- uint32_t u_highest_seq_no;/*< highest sequence number found */
- uint32_t u_jitter; /*< inter arrival jitter calculated */
- uint32_t u_last_SR; /*< last SR record received */
- uint32_t u_last_RR; /*< last RR record received */
- mtime_t u_delay_since_last_SR; /*< delay since last SR record received */
- mtime_t u_delay_since_last_RR; /*< delay since last RR record received */
-
- uint64_t u_avg_pkt_size; /*< average RTCP packet size */
- uint64_t u_sent_pkt_size; /*< RTCP packet size sent */
-
-} rtcp_stats_t;
-
-typedef struct
-{
- uint32_t u_version; /*< RTCP version number */
- bool b_padding; /*< indicates if packets has padding */
- uint32_t u_report; /*< reception packet count */
- uint32_t u_payload_type; /*< type of RTCP payload */
- uint32_t u_length; /*< length of packet */
- uint32_t u_ssrc; /*< channel name this packet belongs to */
-
- union {
- rtcp_SR_t sr; /*< SR record */
- rtcp_RR_t rr; /*< RR record */
- rtcp_SDES_t sdes; /*< SDES record */
- rtcp_BYE_t bye; /*< BYE record */
- rtcp_APP_t app; /*< APP record */
- } report;
-
-} rtcp_pkt_t;
-
-typedef struct rtcp_client_t
-{
- int fd; /*< socket descriptor of rtcp stream */
-
- uint32_t i_index;
- uint32_t u_ssrc; /*< channel name */
- bool b_deleted; /*< channel deleted ? */
- mtime_t i_timeout; /*< remove timeout before real deletion,
- * this is recommended by RFC 3550 at
- * page 27 to ignore out-of-order packets.
- */
- rtcp_stats_t *p_stats; /*< RTCP statistics */
-
- uint32_t i_items; /*< count of SDES item structures */
- rtcp_SDES_item_t **pp_sdes; /*< SDES client items */
-} rtcp_client_t;
-
-/**
- * structure rtcp_t
- * This structure is a VLC_OBJECT and holds RTCP statistical information.
- */
-typedef struct rtcp_t
-{
- VLC_COMMON_MEMBERS
-
- uint32_t u_clients; /*< number of clients connected */
- uint32_t u_active; /*< number of active senders */
- uint32_t u_members; /*< number of clients in previous interval */
-
- mtime_t i_date; /*< current RTCP packet interval */
- mtime_t i_last_date; /*< previous RTCP packet interval */
- mtime_t i_next_date; /*< next scheduled transmision time
- of RTCP packet */
-
- uint32_t i_clients; /*< count of clients structures */
- rtcp_client_t **pp_clients; /*< RTCP clients */
-
- /* bitstream data pointer used for decoding */
- bs_t *bs; /*< bitstream decoding data pointer */
-
- /* functions */
- int (*pf_add_client)( vlc_object_t *p_this, uint32_t u_ssrc, uint32_t *i_pos );
- int (*pf_del_client)( vlc_object_t *p_this, uint32_t u_ssrc );
- int (*pf_find_client)( vlc_object_t *p_this, uint32_t u_ssrc, uint32_t *i_pos );
- int (*pf_cleanup_clients)( vlc_object_t *p_this );
- int (*pf_destroy_clients)( vlc_object_t *p_this );
-} rtcp_t;
-
-int rtcp_add_client( vlc_object_t *p_this, uint32_t u_ssrc, uint32_t *i_pos );
-int rtcp_del_client( vlc_object_t *p_this, uint32_t u_ssrc );
-/* Should be called with vlc_mutex_lock( &p_this->objec_lock ) held */
-int rtcp_find_client( vlc_object_t *p_this, uint32_t u_ssrc, uint32_t *i_pos );
-int rtcp_cleanup_clients( vlc_object_t *p_this );
-int rtcp_destroy_clients( vlc_object_t *p_this );
-
-/**
- * rtcp_cleanup_clients - Permanently remove clients from the list
- * Permanently delete struct rtcp_client_t from member list when it is there
- * time to be removed. RFC 3550 recommends a grace period of five times the
- * RTCP packet send/receive interval before permanent removal of session. This
- * is to ignore out of order packets for the same SSRC that arrive after the
- * BYE report for that SSRC has been received.
- * Arguments:
- * \param p_this VLC_OBJECT_T of type rtcp_t
- */
-int rtcp_cleanup_clients( vlc_object_t *p_this );
-//VLC_EXPORT( int, rtcp_cleanup_clients, ( vlc_object_t * ) );
-
-/**
- * rtcp_pkt_decode - Decode RTCP packet
- * Decode incoming RTCP packet and inspect the records types.
- * Arguments:
- * \param p_this
- * \param p_pkt
- * \param p_block
- */
-int rtcp_pkt_decode( vlc_object_t *p_this, rtcp_pkt_t *p_pkt, block_t *p_block );
-//VLC_EXPORT( int, rtcp_decode, ( rtcp_pkt_t *, block_t * ) );
-
-/**
- * rtcp_pkt_new - Encode RTCP packet
- * Create a new RTCP packet of type 'type'
- * Arguments:
- * \param type type of RTCP packet @see
- */
-rtcp_pkt_t *rtcp_pkt_new( vlc_object_t *p_this, int type );
-//VLC_EXPORT( block_t* , rtcp_encode, ( vlc_object_t *, int ) );
-void rtcp_pkt_del( vlc_object_t *p_this, rtcp_pkt_t *pkt );
-
-block_t *rtcp_encode_SR( vlc_object_t *p_this, rtcp_pkt_t *p_pkt );
-block_t *rtcp_encode_RR( vlc_object_t *p_this, rtcp_pkt_t *p_pkt );
-block_t *rtcp_encode_SDES( vlc_object_t *p_this, rtcp_pkt_t *p_pkt );
-block_t *rtcp_encode_BYE( vlc_object_t *p_this, rtcp_pkt_t *p_pkt, char *psz_reason );
-
-/**
- * rtcp_interval
- * Calculate the interval at which RTCP compound packets are going to be
- * sent or received.
- * Arguments:
- * \param p_this VLC_OBJECT of type rtcp_t
- * \param u_bandwith bandwidth of RTP connection
- * \param u_ssrc client to sent or receive from
- * \param b_sender are we the sender or the receiver
- * \param b_first the first time this function is called use only half
- * of the initial waiting time
- */
-uint64_t rtcp_interval( vlc_object_t *p_this, uint64_t u_bandwidth, uint32_t u_ssrc,
- bool b_sender, bool b_first );
-
-/**
- * rtcp_expire
- * Decides to sent an RTCP report or a BYE record
- * Arguments:
- * \param p_this VLC_OBJECT of type rtcp_t
- * \param u_bandwith bandwidth of RTP connection
- * \param u_ssrc client to sent or receive from
- * \param rtcp_event type of event received
- * \param b_sender are we the sender or the receiver
- * \param *b_first the first time this function is called use only half
- * of the initial waiting time. If b_first is true, then
- * it will return *b_first = false;
- */
-void rtcp_expire( vlc_object_t *p_this, rtcp_event_t rtcp_event, uint64_t u_bandwidth,
- uint32_t u_ssrc, bool b_sender, bool *b_first );
-
-/**
- * rtcp_received
- * Determine what to do on the received Sender Report, decode it
- * or leave the channel (BYE record).
- * Arguments:
- * \param p_this VLC_OBJECT of type rtcp_t
- * \param p_pkt RTCP packet that was received
- * \param rtcp_event type of event received
- */
-void rtcp_received( vlc_object_t *p_this, rtcp_pkt_t *pkt,
- rtcp_event_t rtcp_event );
-
-#endif /* RTCP_H */
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