/*****************************************************************************
* Preamble
*****************************************************************************/
-#include <stdlib.h>
#include <vlc/vlc.h>
#include <vlc_access.h>
#include <vlc_network.h>
-/* Big pile of stuff missing form glibc 2.5 */
-#if defined (HAVE_NETINET_UDPLITE_H)
-# include <netinet/udplite.h>
-#elif defined (__linux__)
-# define UDPLITE_SEND_CSCOV 10
-# define UDPLITE_RECV_CSCOV 11
-#endif
-
#ifndef SOCK_DCCP /* provisional API */
# ifdef __linux__
# define SOCK_DCCP 6
#ifndef IPPROTO_UDPLITE
# define IPPROTO_UDPLITE 136 /* from IANA */
#endif
-#ifndef SOL_UDPLITE
-# define SOL_UDPLITE IPPROTO_UDPLITE
-#endif
+#define MTU 65535
/*****************************************************************************
* Module descriptor
"Caching value for UDP streams. This " \
"value should be set in milliseconds." )
-#define AUTO_MTU_TEXT N_("Autodetection of MTU")
-#define AUTO_MTU_LONGTEXT N_( \
- "Automatically detect the line's MTU. This will increase the size if" \
- " truncated packets are found" )
-
#define RTP_LATE_TEXT N_("RTP reordering timeout in ms")
#define RTP_LATE_LONGTEXT N_( \
"VLC reorders RTP packets. The input will wait for late packets at most "\
add_integer( "udp-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT,
CACHING_LONGTEXT, VLC_TRUE );
add_integer( "rtp-late", 100, NULL, RTP_LATE_TEXT, RTP_LATE_LONGTEXT, VLC_TRUE );
-
- add_bool( "udp-auto-mtu", 1, NULL,
- AUTO_MTU_TEXT, AUTO_MTU_LONGTEXT, VLC_TRUE );
+ add_obsolete_bool( "udp-auto-mtu" );
set_capability( "access2", 0 );
add_shortcut( "udp" );
add_shortcut( "rtp4" );
add_shortcut( "rtp6" );
add_shortcut( "udplite" );
- add_shortcut( "rtptcp" );
+ add_shortcut( "rtptcp" ); /* tcp name is already taken */
add_shortcut( "dccp" );
set_callbacks( Open, Close );
#define RTP_HEADER_LEN 12
static block_t *BlockUDP( access_t * );
-static block_t *BlockTCP( access_t * );
+static block_t *BlockStartRTP( access_t * );
static block_t *BlockRTP( access_t * );
static block_t *BlockChoose( access_t * );
static int Control( access_t *, int, va_list );
{
int fd;
- int i_mtu;
- vlc_bool_t b_auto_mtu;
- vlc_bool_t b_framed_rtp;
+ vlc_bool_t b_framed_rtp, b_comedia;
/* reorder rtp packets when out-of-sequence */
uint16_t i_last_seqno;
int i_bind_port, i_server_port = 0;
int fam = AF_UNSPEC, proto = IPPROTO_UDP;
- if (strlen (p_access->psz_access) >= 3)
+ /* Set up p_access */
+ access_InitFields( p_access );
+ ACCESS_SET_CALLBACKS( NULL, BlockStartRTP, Control, NULL );
+ p_access->info.b_prebuffered = VLC_FALSE;
+ MALLOC_ERR( p_access->p_sys, access_sys_t ); p_sys = p_access->p_sys;
+ memset (p_sys, 0, sizeof (*p_sys));
+
+ if (strlen (p_access->psz_access) > 0)
{
- switch (p_access->psz_access[3])
+ switch (p_access->psz_access[strlen (p_access->psz_access) - 1])
{
case '4':
fam = AF_INET;
fam = AF_INET6;
break;
}
- if (strcmp (p_access->psz_access + 3, "lite") == 0)
+
+ if (strcmp (p_access->psz_access, "udplite") == 0)
proto = IPPROTO_UDPLITE;
else
- if (strcmp (p_access->psz_access + 3, "tcp") == 0)
+ if (strncmp (p_access->psz_access, "udp", 3 ) == 0 )
+ p_access->pf_block = BlockChoose;
+ else
+ if (strcmp (p_access->psz_access, "rtptcp") == 0)
proto = IPPROTO_TCP;
else
if (strcmp (p_access->psz_access, "dccp") == 0)
*psz_parser++ = '\0';
psz_bind_addr = psz_parser;
- if( *psz_parser == '[' )
+ if( psz_bind_addr[0] == '[' )
/* skips bracket'd IPv6 address */
psz_parser = strchr( psz_parser, ']' );
}
psz_server_addr = psz_name;
- if( *psz_server_addr == '[' )
- /* skips bracket'd IPv6 address */
- psz_parser = strchr( psz_name, ']' );
+ psz_parser = ( psz_server_addr[0] == '[' )
+ ? strchr( psz_name, ']' ) /* skips bracket'd IPv6 address */
+ : psz_name;
if( psz_parser != NULL )
{
msg_Dbg( p_access, "opening server=%s:%d local=%s:%d",
psz_server_addr, i_server_port, psz_bind_addr, i_bind_port );
- /* Set up p_access */
- access_InitFields( p_access );
- ACCESS_SET_CALLBACKS( NULL, BlockChoose, Control, NULL );
- p_access->info.b_prebuffered = VLC_FALSE;
- MALLOC_ERR( p_access->p_sys, access_sys_t ); p_sys = p_access->p_sys;
- memset (p_sys, 0, sizeof (*p_sys));
-
+ /* Hmm, the net_* connection functions may need to be unified... */
switch (proto)
{
case IPPROTO_UDP:
case IPPROTO_TCP:
p_sys->fd = net_ConnectTCP( p_access, psz_server_addr, i_server_port );
- p_sys->b_framed_rtp = VLC_TRUE;
+ p_access->pf_block = BlockRTP;
+ p_sys->b_comedia = p_sys->b_framed_rtp = VLC_TRUE;
break;
case IPPROTO_DCCP:
p_sys->fd = -1;
msg_Err( p_access, "DCCP support not compiled-in!" );
#endif
+ p_sys->b_comedia = VLC_TRUE;
break;
}
free (psz_name);
}
shutdown( p_sys->fd, SHUT_WR );
-
-#ifdef UDPLITE_RECV_CSCOV
- if (proto == IPPROTO_UDPLITE)
- /* UDP header: 8 bytes + RTP header: 12 bytes (or more) */
- setsockopt (p_sys->fd, SOL_UDPLITE, UDPLITE_RECV_CSCOV,
- &(int){ 20 }, sizeof (int));
-#endif
-
- if (p_sys->b_framed_rtp)
- {
- /* We don't do autodetection and prebuffering in case of framing */
- p_access->pf_block = BlockRTP;
- p_sys->i_mtu = 65535;
- }
- else
- {
- /* FIXME */
- p_sys->i_mtu = var_CreateGetInteger( p_access, "mtu" );
- if( p_sys->i_mtu <= 1 )
- p_sys->i_mtu = 1500; /* Avoid problem */
-
- p_sys->b_auto_mtu = var_CreateGetBool( p_access, "udp-auto-mtu" );;
- }
+ net_SetCSCov (p_sys->fd, -1, 12);
/* Update default_pts to a suitable value for udp access */
var_Create( p_access, "udp-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
*****************************************************************************/
static int Control( access_t *p_access, int i_query, va_list args )
{
- access_sys_t *p_sys = p_access->p_sys;
vlc_bool_t *pb_bool;
int *pi_int;
int64_t *pi_64;
/* */
case ACCESS_GET_MTU:
pi_int = (int*)va_arg( args, int * );
- *pi_int = p_sys->i_mtu;
+ *pi_int = MTU;
break;
case ACCESS_GET_PTS_DELAY:
case ACCESS_SET_TITLE:
case ACCESS_SET_SEEKPOINT:
case ACCESS_SET_PRIVATE_ID_STATE:
+ case ACCESS_GET_CONTENT_TYPE:
return VLC_EGENERIC;
default:
access_sys_t *p_sys = p_access->p_sys;
block_t *p_block;
+ if( p_access->info.b_eof )
+ return NULL;
+
/* Read data */
- p_block = block_New( p_access, p_sys->i_mtu );
+ p_block = block_New( p_access, MTU );
p_block->i_buffer = net_Read( p_access, p_sys->fd, NULL,
- p_block->p_buffer, p_sys->i_mtu,
- VLC_FALSE );
- if( p_block->i_buffer < 0 )
+ p_block->p_buffer, MTU, VLC_FALSE );
+ if( ( p_block->i_buffer < 0 )
+ || ( p_sys->b_comedia && ( p_block->i_buffer == 0 ) ) )
{
+ if( p_sys->b_comedia )
+ {
+ p_access->info.b_eof = VLC_TRUE;
+ msg_Dbg( p_access, "connection-oriented media hangup" );
+ }
block_Release( p_block );
return NULL;
}
- if( (p_block->i_buffer >= p_sys->i_mtu) && p_sys->b_auto_mtu &&
- p_sys->i_mtu < 32767 )
- {
- /* Increase by 100% */
- p_sys->i_mtu *= 2;
- msg_Dbg( p_access, "increasing MTU to %d", p_sys->i_mtu );
- }
-
- return p_block;
+ return block_Realloc( p_block, 0, p_block->i_buffer );
}
/*****************************************************************************
if( p_block == NULL )
{
/* MTU should always be 65535 in this case */
- p_sys->p_partial_frame = p_block = block_New( p_access, 65537 );
+ p_sys->p_partial_frame = p_block = block_New( p_access, 2 + MTU );
if (p_block == NULL)
return NULL;
}
/* Read RTP framing */
if (p_block->i_buffer < 2)
{
- /* FIXME: not very efficient */
int i_read = net_Read( p_access, p_sys->fd, NULL,
p_block->p_buffer + p_block->i_buffer,
2 - p_block->i_buffer, VLC_FALSE );
p_sys->p_end = p_block;
return VLC_TRUE;
}
- /* walk through the queue from top down since the new packet is in
+ /* walk through the queue from top down since the new packet is in
most cases just appended to the end */
for( ;; )
i_tmp = i_new - (uint16_t) p->i_dts;
if( !i_tmp ) /* trash duplicate */
- break;
+ break;
if ( i_tmp < 32768 )
{ /* insert after this block ( i_new > p->i_dts ) */
if (p_prev)
{
p_prev->p_prev = p_block;
- msg_Dbg(p_access, "RTP reordering: insert after %d, new %d",
- (uint16_t) p->i_dts, i_new );
+ msg_Dbg(p_access, "RTP reordering: insert after %d, new %d",
+ (uint16_t) p->i_dts, i_new );
}
- else
+ else
{
p_sys->p_end = p_block;
}
i_tmp = p_sys->i_last_seqno - i_new;
if( !p_access->info.b_prebuffered || (i_tmp > 32767) )
{
- msg_Dbg(p_access, "RTP reordering: prepend %d before %d",
+ msg_Dbg(p_access, "RTP reordering: prepend %d before %d",
i_new, (uint16_t) p->i_dts );
p_block->p_next = p;
p->p_prev = p_block;
/* reordering failed - append the packet to the end of queue */
msg_Dbg(p_access, "RTP: sequence changed (or buffer too small) "
- "new: %d, buffer %d...%d", i_new, (uint16_t) p->i_dts,
+ "new: %d, buffer %d...%d", i_new, (uint16_t) p->i_dts,
(uint16_t) p_sys->p_end->i_dts);
p_sys->p_end->p_next = p_block;
p_block->p_prev = p_sys->p_end;
}
/*****************************************************************************
- * BlockParseRTP/BlockRTP:
+ * BlockParseRTP: decapsulate the RTP packet and return it
*****************************************************************************/
static block_t *BlockParseRTP( access_t *p_access, block_t *p_block )
{
p_block->i_dts = (mtime_t) GetWBE( p_block->p_buffer + 2 );
/* FIXME: use rtpmap */
+ const char *psz_demux = NULL;
+
switch( i_payload_type )
{
case 14: // MPA: MPEG Audio (RFC2250, §3.4)
i_skip += 4; // 32 bits RTP/MPA header
+ psz_demux = "mpga";
break;
case 32: // MPV: MPEG Video (RFC2250, §3.5)
/* MPEG2 Video extension header */
/* TODO: shouldn't we skip this too ? */
}
+ psz_demux = "mpgv";
break;
case 33: // MP2: MPEG TS (RFC2250, §2)
/* plain TS over RTP */
+ psz_demux = "ts";
break;
+ case 72: /* muxed SR */
+ case 73: /* muxed RR */
+ case 74: /* muxed SDES */
+ case 75: /* muxed BYE */
+ case 76: /* muxed APP */
+ goto trash; /* ooh! ignoring RTCP is evil! */
+
default:
msg_Dbg( p_access, "unsupported RTP payload type: %u", i_payload_type );
goto trash;
}
#endif
+ if( !p_access->psz_demux || !*p_access->psz_demux )
+ {
+ free( p_access->psz_demux );
+ p_access->psz_demux = strdup( psz_demux );
+ }
+
return p_block;
trash:
return NULL;
}
+/*****************************************************************************
+ * BlockRTP: receives an RTP packet, parses it, queues it queue,
+ * then dequeues the oldest packet and returns it to input/demux.
+ ****************************************************************************/
+static block_t *BlockRTP( access_t *p_access )
+{
+ access_sys_t *p_sys = p_access->p_sys;
+ block_t *p;
+
+ while ( !p_sys->p_list ||
+ ( mdate() - p_sys->p_list->i_pts ) < p_sys->i_rtp_late )
+ {
+ p = BlockParseRTP( p_access,
+ p_sys->b_framed_rtp ? BlockTCP( p_access )
+ : BlockUDP( p_access ) );
+ if ( !p )
+ return NULL;
+
+ rtp_ChainInsert( p_access, p );
+ }
+
+ p = p_sys->p_list;
+ p_sys->p_list = p_sys->p_list->p_next;
+ p_sys->i_last_seqno++;
+ if( p_sys->i_last_seqno != (uint16_t) p->i_dts )
+ {
+ msg_Dbg( p_access, "RTP: packet(s) lost, expected %d, got %d",
+ p_sys->i_last_seqno, (uint16_t) p->i_dts );
+ p_sys->i_last_seqno = (uint16_t) p->i_dts;
+ }
+ p->p_next = NULL;
+ return p;
+}
+
+/*****************************************************************************
+ * BlockPrebufferRTP: waits until we have at least two RTP datagrams,
+ * so that we can synchronize the RTP sequence number.
+ * This is only useful for non-reliable transport protocols.
+ ****************************************************************************/
static block_t *BlockPrebufferRTP( access_t *p_access, block_t *p_block )
{
access_sys_t *p_sys = p_access->p_sys;
int i_count = 0;
block_t *p = p_block;
+ if( BlockParseRTP( p_access, p_block ) == NULL )
+ return NULL;
+
for( ;; )
{
mtime_t i_date = mdate();
break;
p = BlockParseRTP( p_access, BlockUDP( p_access ) );
- if( !p && (i_date - i_first) > p_sys->i_rtp_late )
+ if( !p && (i_date - i_first) > p_sys->i_rtp_late )
{
msg_Err( p_access, "error in RTP prebuffering!" );
- break;
+ return NULL;
}
}
return p;
}
-static block_t *BlockRTP( access_t *p_access )
+static block_t *BlockStartRTP( access_t *p_access )
{
- access_sys_t *p_sys = p_access->p_sys;
- block_t *p;
-
- while ( !p_sys->p_list ||
- ( mdate() - p_sys->p_list->i_pts ) < p_sys->i_rtp_late )
- {
- p = BlockParseRTP( p_access,
- p_sys->b_framed_rtp ? BlockTCP( p_access )
- : BlockUDP( p_access ) );
- if ( !p )
- return NULL;
-
- rtp_ChainInsert( p_access, p );
- }
-
- p = p_sys->p_list;
- p_sys->p_list = p_sys->p_list->p_next;
- p_sys->i_last_seqno++;
- if( p_sys->i_last_seqno != (uint16_t) p->i_dts )
- {
- msg_Dbg( p_access, "RTP: packet(s) lost, expected %d, got %d",
- p_sys->i_last_seqno, (uint16_t) p->i_dts );
- p_sys->i_last_seqno = (uint16_t) p->i_dts;
- }
- p->p_next = NULL;
- return p;
+ p_access->pf_block = BlockRTP;
+ return BlockPrebufferRTP( p_access, BlockUDP( p_access ) );
}
+
/*****************************************************************************
* BlockChoose: decide between RTP and UDP
*****************************************************************************/
{
block_t *p_block;
int i_rtp_version;
- int i_CSRC_count;
int i_payload_type;
if( ( p_block = BlockUDP( p_access ) ) == NULL )
return p_block;
}
- if( !BlockParseRTP( p_access, p_block )) return NULL;
-
p_access->pf_block = BlockRTP;
-
return BlockPrebufferRTP( p_access, p_block );
}