* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
+#include <stdlib.h>
#include <netinet/in.h>
#include <sys/time.h>
-#include <sys/time.h>
#include <vlc/vlc.h>
#include <vlc_bits.h>
#include "rtp.h"
#include "rtcp.h"
-static int rtcp_decode_SR( vlc_object_t *p_this, rtcp_t *p_rtcp, uint8_t *p_block );
-static int rtcp_decode_RR( vlc_object_t *p_this, rtcp_t *p_rtcp, uint8_t *p_buffer );
-static int rtcp_decode_SR( vlc_object_t *p_this, rtcp_t *p_rtcp, uint8_t *p_buffer );
-static int rtcp_decode_SDES( vlc_object_t *p_this, rtcp_t *p_rtcp, uint8_t *p_buffer );
-static int rtcp_decode_BYE( vlc_object_t *p_this, rtcp_t *p_rtcp, uint8_t *p_buffer );
-static int rtcp_decode_APP( vlc_object_t *p_this, rtcp_t *p_rtcp, uint8_t *p_buffer );
+static void send_RTCP( vlc_object_t *p_this, rtcp_event_t rtcp_event )
+{
+/* FIXME: higher level functions that should be in another file */
+}
+
+static void rtcp_schedule( vlc_object_t *p_this, uint64_t i_sched, rtcp_event_t rtcp_event )
+{
+/* FIXME: higher level functions that should be in another file */
+}
+
+/* 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_EGENERIC;
+ 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--;
+ if( p_old->psz_data)
+ 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_mutex_lock( &p_rtcp->object_lock );
+ p_client = (rtcp_client_t*) malloc( sizeof(rtcp_client_t) );
+ if( !p_client )
+ return VLC_EGENERIC;
+ p_client->i_index = p_rtcp->i_clients + 1;
+ p_client->b_deleted = VLC_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_mutex_unlock( &p_rtcp->object_lock );
+ 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_mutex_lock( &p_rtcp->object_lock );
+ 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 = VLC_TRUE;
+ p_old->i_timeout = 5 * (p_rtcp->i_date - p_rtcp->i_last_date) +
+ p_rtcp->i_next_date;
+ p_rtcp->u_clients--;
+ }
+ vlc_mutex_unlock( &p_rtcp->object_lock );
+ 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_mutex_lock( &p_rtcp->object_lock );
+ 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_mutex_unlock( &p_rtcp->object_lock );
+ 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,
+ vlc_bool_t b_sender, vlc_bool_t 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;
+
+ int u_ssrc = 0; /* FIXME: how to know which client we look for?? */
+
+ 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, vlc_bool_t b_sender, vlc_bool_t *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;
+
+ int u_ssrc = 0; /* FIXME: how to know which client we look for?? */
+
+ 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,
+ 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;
-static block_t *rtcp_encode_SR( vlc_object_t *p_this, rtcp_t *p_rtcp );
-static block_t *rtcp_encode_RR( vlc_object_t *p_this, rtcp_t *p_rtcp );
-static block_t *rtcp_encode_SDES( vlc_object_t *p_this, rtcp_t *p_rtcp );
-static block_t *rtcp_encode_BYE( vlc_object_t *p_this, rtcp_t *p_rtcp );
+ 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,
+ b_sender, *b_first );
+ rtcp_schedule( p_this, p_rtcp->i_next_date + i_interval, rtcp_event );
+ *b_first = VLC_FALSE;
+ }
+ else
+ {
+ rtcp_schedule( p_this, p_rtcp->i_next_date, rtcp_event );
+ }
+ break;
+ }
+ p_rtcp->i_date = p_rtcp->i_next_date;
+}
-static int rtcp_decode_SR( vlc_object_t *p_this, rtcp_t *p_rtcp, uint8_t *p_buffer )
+/*--------------------------------------------------------------------------
+ * 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 )
{
- unsigned int u_ssrc_count;
+ rtcp_t *p_rtcp = (rtcp_t *) p_this;
unsigned int i = 0;
- if( !p_rtcp && !p_buffer )
+ if( !p_pkt )
return VLC_EGENERIC;
msg_Dbg( p_this, "decoding record: SR" );
- p_rtcp->stats.u_SR_received++;
- p_rtcp->stats.u_pkt_count = p_buffer[20+RTCP_HEADER_LEN];
- p_rtcp->stats.u_octet_count = p_buffer[24+RTCP_HEADER_LEN];
- u_ssrc_count = p_buffer[RTCP_HEADER_LEN] & 0x1f;
- msg_Dbg( p_this, "SR received %d, packet count %d, octect count %d, SSRC count %d",
- p_rtcp->stats.u_SR_received,
- p_rtcp->stats.u_pkt_count,
- p_rtcp->stats.u_octet_count,
- u_ssrc_count );
-
- for( i=0; i < u_ssrc_count; i++ )
+
+ /* 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++ )
{
- unsigned char count[4];
-
- p_rtcp->stats.u_fract_lost = p_buffer[32+RTCP_HEADER_LEN];
-
- count[0] = 0;
- count[1] = p_buffer[33+RTCP_HEADER_LEN];
- count[2] = p_buffer[34+RTCP_HEADER_LEN];
- count[3] = p_buffer[35+RTCP_HEADER_LEN];
-
- /* FIXME: I don't like the sight of this */
- p_rtcp->stats.u_pkt_lost = ntohl((int)count);
-
- p_rtcp->stats.u_highest_seq_no = ntohl( p_buffer[36+RTCP_HEADER_LEN] );
- p_rtcp->stats.u_jitter = ntohl( p_buffer[40+RTCP_HEADER_LEN] );
- p_rtcp->stats.u_last_SR = ntohl( p_buffer[44+RTCP_HEADER_LEN] );
- p_rtcp->stats.u_delay_since_last_SR = (mtime_t) ntohl( p_buffer[48+RTCP_HEADER_LEN] );
-
- msg_Dbg( p_this, "fract lost %d, packet lost %d, highest seqno %d, jitter %d, last SR %d, delay %lld",
- p_rtcp->stats.u_fract_lost,
- p_rtcp->stats.u_pkt_lost,
- p_rtcp->stats.u_highest_seq_no,
- p_rtcp->stats.u_jitter,
- p_rtcp->stats.u_last_SR,
- p_rtcp->stats.u_delay_since_last_SR );
+ rtcp_client_t *p_client = NULL;
+ uint32_t i_pos = 0;
+ uint32_t u_ssrc = 0;
+ int result = 0;
+
+ u_ssrc = bs_read( p_rtcp->bs, 32 );
+
+ result = p_rtcp->pf_find_client( p_this, u_ssrc, &i_pos );
+ if( result == VLC_EGENERIC )
+ {
+ result = p_rtcp->pf_add_client( p_this, p_pkt->u_ssrc, &i_pos );
+ if( result == VLC_EGENERIC )
+ return VLC_ENOMEM;
+ }
+ vlc_mutex_lock( &p_rtcp->object_lock );
+ 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_mutex_unlock( &p_rtcp->object_lock );
}
return VLC_SUCCESS;
}
-static int rtcp_decode_RR( vlc_object_t *p_this, rtcp_t *p_rtcp, uint8_t *p_buffer )
+static int rtcp_decode_RR( vlc_object_t *p_this, rtcp_pkt_t *p_pkt )
{
- unsigned int u_ssrc_count;
+ rtcp_t *p_rtcp = (rtcp_t *) p_this;
unsigned int i = 0;
- if( !p_rtcp && !p_buffer )
+ if( !p_pkt )
return VLC_EGENERIC;
msg_Dbg( p_this, "decoding record: RR" );
- p_rtcp->stats.u_RR_received++;
- u_ssrc_count = (p_buffer[RTCP_HEADER_LEN] & 0x1f);
- msg_Dbg( p_this, "RR received %d, SSRC count %d", p_rtcp->stats.u_RR_received, u_ssrc_count );
-
- for( i=0; i < u_ssrc_count; i++ )
+ for( i=0; i < p_pkt->u_report; i++ )
{
- unsigned char count[4];
-
- p_rtcp->stats.u_fract_lost = p_buffer[12+RTCP_HEADER_LEN];
-
- count[0] = 0;
- count[1] = p_buffer[13+RTCP_HEADER_LEN];
- count[2] = p_buffer[14+RTCP_HEADER_LEN];
- count[3] = p_buffer[15+RTCP_HEADER_LEN];
-
- /* FIXME: I don't like the sight of this */
- p_rtcp->stats.u_pkt_lost = ntohl((int)count);
-
- p_rtcp->stats.u_highest_seq_no = ntohl( p_buffer[16+RTCP_HEADER_LEN] );
- p_rtcp->stats.u_jitter = ntohl( p_buffer[20+RTCP_HEADER_LEN] );
- p_rtcp->stats.u_last_RR = ntohl( p_buffer[24+RTCP_HEADER_LEN] );
- p_rtcp->stats.u_delay_since_last_RR = (mtime_t) ntohl( p_buffer[28+RTCP_HEADER_LEN] );
-
- msg_Dbg( p_this, "fract lost %d, packet lost %d, highest seqno %d, jitter %d, last RR %d, delay %lld",
- p_rtcp->stats.u_fract_lost,
- p_rtcp->stats.u_pkt_lost,
- p_rtcp->stats.u_highest_seq_no,
- p_rtcp->stats.u_jitter,
- p_rtcp->stats.u_last_RR,
- p_rtcp->stats.u_delay_since_last_RR );
+ rtcp_client_t *p_client = NULL;
+ uint32_t i_pos = 0;
+ uint32_t u_ssrc = 0;
+ int result = 0;
+
+ u_ssrc = bs_read( p_rtcp->bs, 32 );
+
+ result = p_rtcp->pf_find_client( p_this, u_ssrc, &i_pos );
+ if( result == VLC_EGENERIC )
+ {
+ result = p_rtcp->pf_add_client( p_this, p_pkt->u_ssrc, &i_pos );
+ if( result == VLC_EGENERIC )
+ return VLC_ENOMEM;
+ }
+
+ vlc_mutex_lock( &p_rtcp->object_lock );
+ 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_mutex_unlock( &p_rtcp->object_lock );
}
return VLC_SUCCESS;
}
-static int rtcp_decode_SDES( vlc_object_t *p_this, rtcp_t *p_rtcp, uint8_t *p_buffer )
+static int rtcp_decode_SDES( vlc_object_t *p_this, rtcp_pkt_t *p_pkt )
{
- if( !p_rtcp && !p_buffer )
+ 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" );
- switch( p_buffer[8] )
+ for( i = 0; i < p_pkt->u_report; i++ )
{
- case RTCP_INFO_CNAME:
- p_rtcp->stats.l_dest_SSRC = ntohs( (int)(p_buffer[4+RTCP_HEADER_LEN]) );
- break;
- case RTCP_INFO_NAME:
- case RTCP_INFO_EMAIL:
- case RTCP_INFO_PHONE:
- case RTCP_INFO_LOC:
- case RTCP_INFO_TOOL:
- case RTCP_INFO_NOTE:
- case RTCP_INFO_PRIV: /* ignoring these */
- break;
- default:
- return VLC_EGENERIC;
+ 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;
+ int result = 0;
+
+ u_ssrc = bs_read( p_rtcp->bs, 32 );
+
+ result = p_rtcp->pf_find_client( p_this, u_ssrc, &i_pos );
+ if( result == VLC_EGENERIC )
+ {
+ result = p_rtcp->pf_add_client( p_this, p_pkt->u_ssrc, &i_pos );
+ if( result == VLC_EGENERIC )
+ return VLC_ENOMEM;
+ }
+
+ vlc_mutex_lock( &p_rtcp->object_lock );
+ 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_mutex_unlock( &p_rtcp->object_lock );
}
return VLC_SUCCESS;
}
-static int rtcp_decode_BYE( vlc_object_t *p_this, rtcp_t *p_rtcp, uint8_t *p_buffer )
+static int rtcp_decode_BYE( vlc_object_t *p_this, rtcp_pkt_t *p_pkt )
{
- if( !p_rtcp && !p_buffer )
+ 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_t *p_rtcp, uint8_t *p_buffer )
+static int rtcp_decode_APP( vlc_object_t *p_this, rtcp_pkt_t *p_pkt )
{
- if( !p_rtcp && !p_buffer )
+ 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;
+ int result = 0;
+
+ if( !p_pkt )
return VLC_EGENERIC;
msg_Dbg( p_this, "decoding record: APP" );
+
+ u_ssrc = bs_read( p_rtcp->bs, 32 );
+
+ result = p_rtcp->pf_find_client( p_this, u_ssrc, &i_pos );
+ if( result == VLC_EGENERIC )
+ {
+ result = p_rtcp->pf_add_client( p_this, p_pkt->u_ssrc, &i_pos );
+ if( result == VLC_EGENERIC )
+ return VLC_ENOMEM;
+ }
+
+ vlc_mutex_lock( &p_rtcp->object_lock );
+ 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_mutex_unlock( &p_rtcp->object_lock );
+ 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_mutex_unlock( &p_rtcp->object_lock );
+
/* Just ignore this packet */
return VLC_SUCCESS;
}
/* Decode RTCP packet
* Decode incoming RTCP packet and inspect the records types.
*/
-int rtcp_decode( vlc_object_t *p_this, rtcp_t *p_rtcp, block_t *p_block )
+int rtcp_pkt_decode( vlc_object_t *p_this, rtcp_pkt_t *p_pkt, block_t *p_block )
{
- uint8_t *p_buffer = NULL;
- unsigned int i_length = 0;
- unsigned int i;
+ rtcp_t *p_rtcp = (rtcp_t *) p_this;
- if( !p_rtcp && !p_block )
+ if( !p_pkt && !p_block )
return VLC_EGENERIC;
- i_length = p_block->i_buffer;
- p_buffer = p_block->p_buffer;
+ bs_init( p_rtcp->bs, p_block->p_buffer, p_block->i_buffer );
- for( i=0; i<i_length; ++i )
+ p_pkt->u_version = bs_read( p_rtcp->bs, 2 );
+ p_pkt->b_padding = bs_read( p_rtcp->bs, 1 ) ? VLC_TRUE : VLC_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 ) )
{
- p_rtcp->u_count = p_buffer[i] & 0xF8;
- p_rtcp->u_version = p_buffer[i] & 0x03;
- p_rtcp->u_payload_type = p_buffer[i+1];
- p_rtcp->u_length = (p_buffer[i+2]<<8) + p_buffer[i+3];
- msg_Dbg( p_this, "New RTCP packet: count %d, version %d, type %d, lenght %d",
- p_rtcp->u_count,
- p_rtcp->u_version,
- p_rtcp->u_payload_type,
- p_rtcp->u_length );
-
- switch( p_rtcp->u_payload_type )
+ uint32_t i_pos = 0;
+
+ switch( p_pkt->u_payload_type )
{
case RTCP_SR:
- rtcp_decode_SR( p_this, p_rtcp, p_buffer );
+ 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:
- rtcp_decode_RR( p_this, p_rtcp, p_buffer );
+ 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:
- rtcp_decode_SDES( p_this, p_rtcp, p_buffer );
+ 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_rtcp, p_buffer );
+ 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:
- rtcp_decode_APP( p_this, p_rtcp, p_buffer );
+ 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;
}
/*
* Create RTCP records for reporting to server.
*/
-block_t *rtcp_encode( vlc_object_t *p_this, int type )
+rtcp_pkt_t *rtcp_pkt_new( vlc_object_t *p_this, int type )
{
- rtcp_t *p_rtcp = NULL;
- block_t *p_block = NULL;
+ rtcp_pkt_t *p_pkt = NULL;
- p_rtcp = (rtcp_t *) malloc( sizeof( rtcp_t ) );
- if( !p_rtcp )
+ p_pkt = (rtcp_pkt_t *) malloc( sizeof( rtcp_pkt_t ) );
+ if( !p_pkt )
return NULL;
- memset( p_rtcp, 0 , sizeof( rtcp_t ) );
- p_rtcp->u_version = 2;
- p_rtcp->u_payload_type = type;
- p_rtcp->u_length = RTCP_HEADER_LEN;
+
+ 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_rtcp->u_length += sizeof(rtcp_SR); break;
- case RTCP_RR: p_rtcp->u_length += sizeof(rtcp_RR); break;
+ 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_rtcp->u_length += sizeof(rtcp_SDES) + strlen(p_rtcp->report.sdes.p_data);
+ 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;
- case RTCP_BYE: p_rtcp->u_length += sizeof(rtcp_BYE); break;
- case RTCP_APP: /* ignore: p_rtcp->u_length += sizeof(rtcp_APP); */ break;
+ default:
+ free(p_pkt);
+ return NULL;
}
+ return p_pkt;
+}
- /* FIXME: Maybe this should be a buffer pool instead */
- p_block = block_New( p_this, p_rtcp->u_length );
- return p_block;
+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 );
}
-static block_t *rtcp_encode_SR( vlc_object_t *p_this, rtcp_t *p_rtcp )
+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;
+ int result = 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_rtcp->u_length );
+ 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, 5, p_rtcp->u_count );
+ bs_write( s, 2, p_pkt->u_version );
bs_write( s, 1, 0 ); /* padding */
- bs_write( s, 2, p_rtcp->u_version );
- bs_write( s, 8, p_rtcp->u_payload_type );
- bs_write( s, 16, p_rtcp->u_length );
-
- /* fill in record */
- bs_write( s, 32, htonl( p_rtcp->report.sr.u_ssrc ) );
+ 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, htonl( ((unsigned int)(ntp_time>>32)) ) ); /* ntp_timestampH */
- bs_write( s, 32, htonl( ((unsigned int)ntp_time)) );/* ntp_timestampL */
+ 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_rtcp->report.sr.rtp_timestamp = htonl(
+ 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, htonl( p_rtcp->report.sr.rtp_timestamp ) );
- bs_write( s, 32, htonl( p_rtcp->report.sr.u_pkt_count ) );
- bs_write( s, 32, htonl( p_rtcp->report.sr.u_octet_count ) );
+ 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 */
+ result = p_rtcp->pf_find_client( p_this, p_pkt->u_ssrc, &i_pos );
+ if( result == VLC_EGENERIC )
+ {
+ msg_Err( p_this, "SR: SSRC identifier doesn't exists", p_pkt->u_ssrc );
+ free( p_block );
+ return NULL;
+ }
+
+ vlc_mutex_lock( &p_rtcp->object_lock );
+ 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_mutex_unlock( &p_rtcp->object_lock );
+
+ /* possible SR extension */
return p_block;
}
-static block_t *rtcp_encode_RR( vlc_object_t *p_this, rtcp_t *p_rtcp )
+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;
+ int result = 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_rtcp->u_length );
+ 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, 5, p_rtcp->u_count );
+ bs_write( s, 2, p_pkt->u_version );
bs_write( s, 1, 0 ); /* padding */
- bs_write( s, 2, p_rtcp->u_version );
- bs_write( s, 8, p_rtcp->u_payload_type );
- bs_write( s, 16, (p_rtcp->u_length >> 2) -1 );
+ 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 */
+ result = p_rtcp->pf_find_client( p_this, p_pkt->u_ssrc, &i_pos );
+ if( result == VLC_EGENERIC )
+ {
+ msg_Err( p_this, "RR: SSRC identifier doesn't exists", p_pkt->u_ssrc );
+ free( p_block );
+ return NULL;
+ }
- /* fill in record */
- bs_write( s, 32, htonl( p_rtcp->report.rr.u_ssrc ) );
+ vlc_mutex_lock( &p_rtcp->object_lock );
+ 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_mutex_unlock( &p_rtcp->object_lock );
+
+ /* possible RR extension */
return p_block;
}
-static block_t *rtcp_encode_SDES( vlc_object_t *p_this, rtcp_t *p_rtcp )
+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;
- char *p_hostname = strdup("hostname");
- int i_length;
- int i;
+ 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_rtcp->u_length );
+ 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, 5, p_rtcp->u_count );
+ bs_write( s, 2, p_pkt->u_version );
bs_write( s, 1, 0 ); /* padding */
- bs_write( s, 2, p_rtcp->u_version );
- bs_write( s, 8, p_rtcp->u_payload_type );
- bs_write( s, 16, (p_rtcp->u_length >> 2) -1 );
+ 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 */
- bs_write( s, 32,htonl( p_rtcp->report.sdes.u_ssrc ) );
- bs_write( s, 8, htonl( p_rtcp->report.sdes.u_attr_name ) );
- bs_write( s, 8, htonl( p_rtcp->report.sdes.u_length ) );
-
- i_length = strlen(p_hostname);
- bs_write( s, 8, i_length );
- for( i=0; i<i_length; i++ )
+ for( i_chunks = 0; i_chunks < p_pkt->u_report; i_chunks++ )
{
- bs_write( s, 8, p_hostname[i] );
+ 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 );
+ }
+ }
}
- free(p_hostname);
return p_block;
}
-static block_t *rtcp_encode_BYE( vlc_object_t *p_this, rtcp_t *p_rtcp )
+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;
- char *p_reason = strdup( "Stream ended." );
- int i_length;
- int i;
+ uint32_t i_count = strlen( psz_reason );
+ uint8_t u_octet = i_count / 8; /* Octect count ??*/
+ uint32_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_rtcp->u_length );
+ 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, 5, p_rtcp->u_count );
+ bs_write( s, 2, p_pkt->u_version );
bs_write( s, 1, 0 ); /* padding */
- bs_write( s, 2, p_rtcp->u_version );
- bs_write( s, 8, p_rtcp->u_payload_type );
- bs_write( s, 16, (p_rtcp->u_length >> 2) -1 );
+ 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 */
- bs_write( s, 32, htonl( p_rtcp->report.sdes.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] );
+ }
- i_length = strlen(p_reason);
- bs_write( s, 8, i_length );
- for( i=0; i<i_length; i++ )
+ /* 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, p_reason[i] );
+ bs_write( s, 8, 0 );
}
- free(p_reason);
return p_block;
}
#define RTCP_APP 204
/* End of RTCP packet types */
-/* RTCP Info */
-#define RTCP_INFO_CNAME 1
-#define RTCP_INFO_NAME 2
-#define RTCP_INFO_EMAIL 3
-#define RTCP_INFO_PHONE 4
-#define RTCP_INFO_LOC 5
-#define RTCP_INFO_TOOL 6
-#define RTCP_INFO_NOTE 7
-#define RTCP_INFO_PRIV 8
-/* End of RTCP Info */
+/* 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 struct
+typedef enum rtcp_event_enum
{
- unsigned int u_ssrc;
- unsigned int ntp_timestampH;
- unsigned int ntp_timestampL;
- unsigned int rtp_timestamp;
- unsigned int u_pkt_count;
- unsigned int u_octet_count;
-} rtcp_SR;
-
-typedef struct _RTCP_header_RR
+ EVENT_BYE,
+ EVENT_REPORT
+
+} rtcp_event_t;
+
+typedef struct
{
- unsigned int u_ssrc;
-} rtcp_RR;
+ 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
{
- unsigned long u_ssrc;
- unsigned char u_fract_lost;
- unsigned char u_pck_lost[3];
- unsigned int u_highest_seq_no;
- unsigned int u_jitter;
- unsigned int u_last_SR;
- unsigned int u_delay_last_SR;
-} rtcp_report_block_SR;
+
+} 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
{
- unsigned int u_ssrc;
- unsigned char u_attr_name;
- unsigned char u_length;
- char *p_data;
-} rtcp_SDES;
+ 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
{
- unsigned int u_ssrc;
- unsigned char u_length;
-} rtcp_BYE;
+ uint32_t u_length; /*< length of packet */
+
+} rtcp_BYE_t;
typedef struct
{
- unsigned char u_length;
- char *p_data;
-} rtcp_APP;
+ 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
{
- unsigned int u_RR_received; /*< RR records received */
- unsigned int u_SR_received; /*< SR records received */
- unsigned long l_dest_SSRC; /*< SSRC */
- unsigned int u_pkt_count; /*< count of packets received */
- unsigned int u_octet_count; /*< ? */
- unsigned int u_pkt_lost; /*< count of packets lost */
- unsigned int u_fract_lost; /*< count of fractional packets lost */
- unsigned int u_highest_seq_no;/*< highest sequence number found */
- unsigned int u_jitter; /*< jitter calculated */
- unsigned int u_last_SR; /*< last SR record received */
- unsigned int 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 */
-} rtcp_stats_t;
+ 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 */
-typedef struct {
- int fd; /*< socket descriptor of rtcp stream */
+} rtcp_stats_t;
- unsigned int u_count; /*< packet count */
- unsigned int u_version; /*< RTCP version number */
- unsigned int u_length; /*< lenght of packet */
- unsigned int u_payload_type; /*< type of RTCP payload */
- rtcp_stats_t stats; /*< RTCP statistics */
+typedef struct
+{
+ uint32_t u_version; /*< RTCP version number */
+ vlc_bool_t 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 sr; /*< SR record */
- rtcp_RR rr; /*< RR record */
- rtcp_SDES sdes; /*< SDES record */
- rtcp_BYE bye; /*< BYE record */
- rtcp_APP app; /*< APP record */
+ 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;
- /*int (*pf_connect)( void *p_userdata, char *p_server, int i_port );
- int (*pf_disconnect)( void *p_userdata );
- int (*pf_read)( void *p_userdata, uint8_t *p_buffer, int i_buffer );
- int (*pf_write)( void *p_userdata, uint8_t *p_buffer, int i_buffer );*/
+} rtcp_pkt_t;
+
+typedef struct rtcp_client_t
+{
+ uint32_t i_index;
+ uint32_t u_ssrc; /*< channel name */
+ vlc_bool_t 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
+
+ int fd; /*< socket descriptor of rtcp stream */
+
+ 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 */
+
+ 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 );
+
} 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 );
+
+
+/**
+ * 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 * ) );
/**
- * Decode RTCP packet
+ * 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 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,
+ vlc_bool_t b_sender, vlc_bool_t b_first );
+
+/**
+ * rtcp_expire
+ * Decides to sent an RTCP report or a BYE record
+ * \param p_this VLC_OBJECT of type rtcp_t
+ * \param u_bandwith bandwidth of RTP connection
+ * \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 VLC_TRUE, then
+ * it will return *b_first = VLC_FALSE;
+ */
+void rtcp_expire( vlc_object_t *p_this, rtcp_event_t rtcp_event,
+ uint64_t u_bandwidth, vlc_bool_t b_sender, vlc_bool_t *b_first );
+
+/**
+ * rtcp_received
+ * Determine what to do on the received Sender Report, decode it
+ * or leave the channel (BYE record).
+ * \param p_this VLC_OBJECT of type rtcp_t
+ * \param p_pkt RTCP packet that was received
+ * \param rtcp_event type of event received
*/
-int rtcp_decode( vlc_object_t *p_this, rtcp_t *p_rtcp, block_t *p_block );
-//VLC_EXPORT( int, rtcp_decode, ( rtcp_t *p_rtcp, block_t *p_block ) );
-block_t *rtcp_encode( vlc_object_t *p_this, int type );
+void rtcp_received( vlc_object_t *p_this, rtcp_pkt_t *pkt,
+ rtcp_event_t rtcp_event );
#endif /* RTCP_H */
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