/*****************************************************************************
* Includes
*****************************************************************************/
-#include <vlc/vlc.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <vlc_common.h>
+#include <vlc_plugin.h>
#include <assert.h>
#include <vlc_playlist.h>
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
+#ifdef HAVE_POLL
+# include <poll.h>
+#endif
#ifdef HAVE_ZLIB_H
# include <zlib.h>
#define SAP_PARSE_TEXT N_( "Try to parse the announce" )
#define SAP_PARSE_LONGTEXT N_( \
"This enables actual parsing of the announces by the SAP module. " \
- "Otherwise, all announcements are parsed by the \"livedotcom\" " \
+ "Otherwise, all announcements are parsed by the \"live555\" " \
"(RTP/RTSP) module." )
#define SAP_STRICT_TEXT N_( "SAP Strict mode" )
#define SAP_STRICT_LONGTEXT N_( \
static void CloseDemux ( vlc_object_t * );
vlc_module_begin();
- set_shortname( _("SAP"));
- set_description( _("SAP Announcements") );
+ set_shortname( N_("SAP"));
+ set_description( N_("SAP Announcements") );
set_category( CAT_PLAYLIST );
set_subcategory( SUBCAT_PLAYLIST_SD );
add_string( "sap-addr", NULL, NULL,
- SAP_ADDR_TEXT, SAP_ADDR_LONGTEXT, VLC_TRUE );
+ SAP_ADDR_TEXT, SAP_ADDR_LONGTEXT, true );
add_bool( "sap-ipv4", 1 , NULL,
- SAP_IPV4_TEXT,SAP_IPV4_LONGTEXT, VLC_TRUE );
+ SAP_IPV4_TEXT,SAP_IPV4_LONGTEXT, true );
add_bool( "sap-ipv6", 1 , NULL,
- SAP_IPV6_TEXT, SAP_IPV6_LONGTEXT, VLC_TRUE );
+ SAP_IPV6_TEXT, SAP_IPV6_LONGTEXT, true );
add_integer( "sap-timeout", 1800, NULL,
- SAP_TIMEOUT_TEXT, SAP_TIMEOUT_LONGTEXT, VLC_TRUE );
+ SAP_TIMEOUT_TEXT, SAP_TIMEOUT_LONGTEXT, true );
add_bool( "sap-parse", 1 , NULL,
- SAP_PARSE_TEXT,SAP_PARSE_LONGTEXT, VLC_TRUE );
+ SAP_PARSE_TEXT,SAP_PARSE_LONGTEXT, true );
add_bool( "sap-strict", 0 , NULL,
- SAP_STRICT_TEXT,SAP_STRICT_LONGTEXT, VLC_TRUE );
+ SAP_STRICT_TEXT,SAP_STRICT_LONGTEXT, true );
#if 0
add_bool( "sap-cache", 0 , NULL,
- SAP_CACHE_TEXT,SAP_CACHE_LONGTEXT, VLC_TRUE );
+ SAP_CACHE_TEXT,SAP_CACHE_LONGTEXT, true );
#endif
add_bool( "sap-timeshift", 0 , NULL,
- SAP_TIMESHIFT_TEXT,SAP_TIMESHIFT_LONGTEXT, VLC_TRUE );
+ SAP_TIMESHIFT_TEXT,SAP_TIMESHIFT_LONGTEXT, true );
set_capability( "services_discovery", 0 );
set_callbacks( Open, Close );
add_submodule();
- set_description( _("SDP Descriptions parser") );
+ set_description( N_("SDP Descriptions parser") );
add_shortcut( "sdp" );
- set_capability( "demux2", 51 );
+ set_capability( "demux", 51 );
set_callbacks( OpenDemux, CloseDemux );
vlc_module_end();
struct sap_announce_t
{
mtime_t i_last;
+ mtime_t i_period;
+ uint8_t i_period_trust;
uint16_t i_hash;
uint32_t i_source[4];
struct sap_announce_t **pp_announces;
/* Modes */
- vlc_bool_t b_strict;
- vlc_bool_t b_parse;
- vlc_bool_t b_timeshift;
+ bool b_strict;
+ bool b_parse;
+ bool b_timeshift;
int i_timeout;
};
static const char *FindAttribute (const sdp_t *sdp, unsigned media,
const char *name);
- static vlc_bool_t IsSameSession( sdp_t *p_sdp1, sdp_t *p_sdp2 );
+ static bool IsSameSession( sdp_t *p_sdp1, sdp_t *p_sdp2 );
static int InitSocket( services_discovery_t *p_sd, const char *psz_address, int i_port );
static int Decompress( const unsigned char *psz_src, unsigned char **_dst, int i_len );
static void FreeSDP( sdp_t *p_sdp );
+static inline int min_int( int a, int b )
+{
+ return a > b ? b : a;
+}
+
/*****************************************************************************
* Open: initialize and create stuff
*****************************************************************************/
services_discovery_t *p_sd = ( services_discovery_t* )p_this;
services_discovery_sys_t *p_sys = (services_discovery_sys_t *)
malloc( sizeof( services_discovery_sys_t ) );
+ if( !p_sys )
+ return VLC_ENOMEM;
p_sys->i_timeout = var_CreateGetInteger( p_sd, "sap-timeout" );
psz_sdp = psz_sdp_new;
i_read = stream_Read( p_demux->s, &psz_sdp[i_len], i_read_max );
- if( i_read < 0 )
+ if( (int)i_read < 0 )
{
msg_Err( p_demux, "cannot read SDP" );
goto error;
psz_sdp[i_len] = '\0';
- if( i_read < i_read_max )
+ if( (int)i_read < i_read_max )
break; // EOF
}
{
p_sdp->psz_uri = NULL;
}
- if( p_sdp->i_media_type != 33 && p_sdp->i_media_type != 32 &&
- p_sdp->i_media_type != 14 )
- goto error;
-
+ switch (p_sdp->i_media_type)
+ { /* Should be in sync with modules/demux/rtp.c */
+ case 0: /* PCMU/8000 */
+ case 8: /* PCMA/8000 */
+ case 10: /* L16/44100/2 */
+ case 11: /* L16/44100 */
+ case 14: /* MPA/90000 */
+ case 32: /* MPV/90000 */
+ case 33: /* MP2/90000 */
+ break;
+ default:
+ goto error;
+ }
if( p_sdp->psz_uri == NULL ) goto error;
p_demux->p_sys = (demux_sys_t *)malloc( sizeof(demux_sys_t) );
}
FREENULL( p_sys->pp_announces );
- pl_Release( p_sd );
free( p_sys );
}
{
char *psz_addr;
int i;
+ int timeout = -1;
/* Braindead Winsock DNS resolver will get stuck over 2 seconds per failed
* DNS queries, even if the DNS server returns an error with milliseconds.
return;
}
+ vlc_object_lock( p_sd );
+
/* read SAP packets */
- while( !p_sd->b_die )
+ while( vlc_object_alive( p_sd ) )
{
- int i_read;
- uint8_t p_buffer[MAX_SAP_BUFFER+1];
+ unsigned n = p_sd->p_sys->i_fd;
+ struct pollfd ufd[n+1];
- i_read = net_Select( p_sd, p_sd->p_sys->pi_fd,
- p_sd->p_sys->i_fd, p_buffer,
- MAX_SAP_BUFFER );
+ for (unsigned i = 0; i < n; i++)
+ {
+ ufd[i].fd = p_sd->p_sys->pi_fd[i];
+ ufd[i].events = POLLIN;
+ ufd[i].revents = 0;
+ }
- /* Check for items that need deletion */
- for( i = 0; i < p_sd->p_sys->i_announces; i++ )
+ /* Make sure we track vlc_object_signal() */
+ ufd[n].fd = vlc_object_waitpipe( p_sd );
+ ufd[n].events = POLLIN | POLLHUP;
+ ufd[n].revents = 0;
+
+ if( ufd[n].fd == -1 )
{
- mtime_t i_timeout = ( mtime_t ) 1000000 * p_sd->p_sys->i_timeout;
+ /* On windows, fd will be -1, as we can't select on a pipe()-ed
+ * fildes. Because we have no other solution to track that
+ * object is killed, we make sure the timeout won't be to long. */
+ if( timeout > 1000 || timeout == -1 )
+ timeout = 1000;
+ }
- if( mdate() - p_sd->p_sys->pp_announces[i]->i_last > i_timeout )
+ vlc_object_unlock( p_sd );
+
+ if (poll (ufd, n+1, timeout) > 0)
+ {
+ for (unsigned i = 0; i < n; i++)
{
- RemoveAnnounce( p_sd, p_sd->p_sys->pp_announces[i] );
+ if (ufd[i].revents)
+ {
+ uint8_t p_buffer[MAX_SAP_BUFFER+1];
+ ssize_t i_read;
+
+ i_read = net_Read (p_sd, ufd[i].fd, NULL, p_buffer,
+ MAX_SAP_BUFFER, false);
+ if (i_read < 0)
+ msg_Warn (p_sd, "receive error: %m");
+ if (i_read > 6)
+ {
+ /* Parse the packet */
+ p_buffer[i_read] = '\0';
+ ParseSAP (p_sd, p_buffer, i_read);
+ }
+ }
}
}
- /* Minimum length is > 6 */
- if( i_read <= 6 )
+ mtime_t now = mdate();
+
+ /* A 1 hour timeout correspong to the RFC Implicit timeout.
+ * This timeout is tuned in the following loop. */
+ timeout = 1000 * 60 * 60;
+
+ /* Check for items that need deletion */
+ for( i = 0; i < p_sd->p_sys->i_announces; i++ )
{
- if( i_read < 0 )
+ mtime_t i_timeout = ( mtime_t ) 1000000 * p_sd->p_sys->i_timeout;
+ sap_announce_t * p_announce = p_sd->p_sys->pp_announces[i];
+ mtime_t i_last_period = now - p_announce->i_last;
+
+ /* Remove the annoucement, if the last announcement was 1 hour ago
+ * or if the last packet emitted was 3 times the average time
+ * between two packets */
+ if( ( p_announce->i_period_trust > 5 && i_last_period > 3 * p_announce->i_period ) ||
+ i_last_period > i_timeout )
+ {
+ RemoveAnnounce( p_sd, p_announce );
+ }
+ else
{
- msg_Warn( p_sd, "socket read error" );
+ /* Compute next timeout */
+ if( p_announce->i_period_trust > 5 )
+ timeout = min_int((3 * p_announce->i_period - i_last_period) / 1000, timeout);
+ timeout = min_int((i_timeout - i_last_period)/1000, timeout);
}
- continue;
}
- p_buffer[i_read] = '\0';
+ if( !p_sd->p_sys->i_announces )
+ timeout = -1; /* We can safely poll indefinitly. */
+ else if( timeout < 200 )
+ timeout = 200; /* Don't wakeup too fast. */
- /* Parse the packet */
- ParseSAP( p_sd, p_buffer, i_read );
+ vlc_object_lock( p_sd );
}
+ vlc_object_unlock( p_sd );
}
/**********************************************************************
if( p_playlist->status.p_item &&
p_playlist->status.p_item->p_input == p_parent_input )
{
- playlist_Control( p_playlist, PLAYLIST_VIEWPLAY, VLC_TRUE,
+ playlist_Control( p_playlist, PLAYLIST_VIEWPLAY, true,
p_playlist->status.p_node, p_playlist->status.p_item );
}
static int Control( demux_t *p_demux, int i_query, va_list args )
{
+ VLC_UNUSED(p_demux); VLC_UNUSED(i_query); VLC_UNUSED(args);
return VLC_EGENERIC;
}
if ((flags >> 5) != 1)
return VLC_EGENERIC;
- vlc_bool_t b_ipv6 = (flags & 0x10) != 0;
- vlc_bool_t b_need_delete = (flags & 0x04) != 0;
+ bool b_ipv6 = (flags & 0x10) != 0;
+ bool b_need_delete = (flags & 0x04) != 0;
if (flags & 0x02)
{
return VLC_EGENERIC;
}
- vlc_bool_t b_compressed = (flags & 0x01) != 0;
+ bool b_compressed = (flags & 0x01) != 0;
uint16_t i_hash = U16_AT (buf + 2);
if( ( p_sdp->i_media_type != 14
&& p_sdp->i_media_type != 32
&& p_sdp->i_media_type != 33)
- || p_sd->p_sys->b_parse == VLC_FALSE )
+ || p_sd->p_sys->b_parse == false )
{
free( p_sdp->psz_uri );
if (asprintf( &p_sdp->psz_uri, "sdp://%s", p_sdp->psz_sdp ) == -1)
p_sdp->psz_uri = NULL;
}
- if( p_sdp->psz_uri == NULL ) return VLC_EGENERIC;
+ if( p_sdp->psz_uri == NULL )
+ {
+ FreeSDP( p_sdp );
+ return VLC_EGENERIC;
+ }
for( i = 0 ; i< p_sd->p_sys->i_announces ; i++ )
{
+ sap_announce_t * p_announce = p_sd->p_sys->pp_announces[i];
/* FIXME: slow */
/* FIXME: we create a new announce each time the sdp changes */
- if( IsSameSession( p_sd->p_sys->pp_announces[i]->p_sdp, p_sdp ) )
+ if( IsSameSession( p_announce->p_sdp, p_sdp ) )
{
- if( b_need_delete )
+ /* We don't support delete announcement as they can easily
+ * Be used to highjack an announcement by a third party.
+ * Intead we cleverly implement Implicit Announcement removal.
+ *
+ * if( b_need_delete )
+ * RemoveAnnounce( p_sd, p_sd->p_sys->pp_announces[i]);
+ * else
+ */
+
+ if( !b_need_delete )
{
- RemoveAnnounce( p_sd, p_sd->p_sys->pp_announces[i]);
- }
- else
- {
- p_sd->p_sys->pp_announces[i]->i_last = mdate();
+ /* No need to go after six, as we start to trust the
+ * average period at six */
+ if( p_announce->i_period_trust <= 5 )
+ p_announce->i_period_trust++;
+
+ /* Compute the average period */
+ p_announce->i_period = (p_announce->i_period + (mdate() - p_announce->i_last)) / 2;
+ p_announce->i_last = mdate();
}
FreeSDP( p_sdp ); p_sdp = NULL;
return VLC_SUCCESS;
p_sys = p_sd->p_sys;
p_sap->i_last = mdate();
+ p_sap->i_period = 0;
+ p_sap->i_period_trust = 0;
p_sap->i_hash = i_hash;
p_sap->p_sdp = p_sdp;
psz_value = GetAttribute( p_sap->p_sdp->pp_attributes, p_sap->p_sdp->i_attributes, "tool" );
if( psz_value != NULL )
{
- input_ItemAddInfo( p_input, _("Session"), _("Tool"), "%s",
- psz_value );
+ input_ItemAddInfo( p_input, _("Session"), _("Tool"), "%s", psz_value );
}
if( strcmp( p_sdp->username, "-" ) )
{
services_discovery_AddItem( p_sd, p_input, psz_value /* category name */ );
TAB_APPEND( p_sys->i_announces, p_sys->pp_announces, p_sap );
-
+ vlc_gc_decref( p_input );
return p_sap;
}
if (strchr (psz_uri + 1, ':'))
{
host = psz_uri;
- psz_uri[strlen (psz_uri)] = ']';
+ strcat (psz_uri, "]");
}
else
host = psz_uri + 1;
if (subtype == NULL)
{
msg_Dbg (p_obj, "missing SDP media subtype: %s", sdp_proto);
- p_sdp->i_media_type = 0;
+ free (sdp_proto);
+ return VLC_EGENERIC;
}
else
{
*subtype++ = '\0';
- p_sdp->i_media_type = atoi (subtype);
+ /* FIXME: check for multiple payload types in RTP/AVP case.
+ * FIXME: check for "mpeg" subtype in raw udp case. */
+ if (!strcasecmp (sdp_proto, "udp"))
+ p_sdp->i_media_type = 33;
+ else
+ p_sdp->i_media_type = atoi (subtype);
}
- if (p_sdp->i_media_type == 0)
- p_sdp->i_media_type = 33;
/* RTP protocol, nul, VLC shortcut, nul, flags byte as follow:
* 0x1: Connection-Oriented media. */
psz_source_ip) == 2)
{
/* According to RFC4570, FQDNs can be used for source-filters,
- * but -seriously- this is impractical */
+ * but -seriously- this is impractical */
switch (ipv)
{
#ifdef AF_INET6
goto error;
}
- if ((sscanf (data, "%63s "I64Fu" "I64Fu" IN IP%u %1023s",
+ if ((sscanf (data, "%63s %"PRIu64" %"PRIu64" IN IP%u %1023s",
p_sdp->username, &p_sdp->session_id,
&p_sdp->session_version, &p_sdp->orig_ip_version,
p_sdp->orig_host) != 5)
}
if( p_announce->i_input_id > -1 )
- playlist_DeleteFromInput( pl_Get(p_sd), p_announce->i_input_id, VLC_FALSE );
+ {
+ playlist_DeleteFromInput( pl_Yield( p_sd ),
+ p_announce->i_input_id, false );
+ pl_Release( p_sd );
+ }
for( i = 0; i< p_sd->p_sys->i_announces; i++)
{
return VLC_SUCCESS;
}
-static vlc_bool_t IsSameSession( sdp_t *p_sdp1, sdp_t *p_sdp2 )
+static bool IsSameSession( sdp_t *p_sdp1, sdp_t *p_sdp2 )
{
/* A session is identified by
* - username,
|| (p_sdp1->session_id != p_sdp2->session_id)
|| (p_sdp1->orig_ip_version != p_sdp2->orig_ip_version)
|| strcmp (p_sdp1->orig_host, p_sdp2->orig_host))
- return VLC_FALSE;
+ return false;
- return VLC_TRUE;
+ return true;
}
projects / vlc / blobdiff