* udp.c
*****************************************************************************
* Copyright (C) 2001, 2002 VideoLAN
- * $Id: udp.c,v 1.4 2003/02/16 14:51:23 fenrir Exp $
+ * $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Eric Petit <titer@videolan.org>
#include <fcntl.h>
#include <vlc/vlc.h>
-#include <vlc/input.h>
#include <vlc/sout.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
-#elif defined( _MSC_VER ) && defined( _WIN32 ) && !defined( UNDER_CE )
-# include <io.h>
#endif
#ifdef WIN32
#include "network.h"
-#define DEFAULT_PORT 1234
-#define LATENCY 100000
-#define MAX_ERROR 500000
-/*****************************************************************************
- * Exported prototypes
- *****************************************************************************/
-static int Open ( vlc_object_t * );
-static void Close ( vlc_object_t * );
-
-static int Write( sout_access_out_t *, sout_buffer_t * );
-static int Seek ( sout_access_out_t *, off_t );
-
-static void ThreadWrite( vlc_object_t *p_this );
/*****************************************************************************
* Module descriptor
*****************************************************************************/
+static int Open ( vlc_object_t * );
+static void Close( vlc_object_t * );
+
+#define SOUT_CFG_PREFIX "sout-udp-"
+
+#define CACHING_TEXT N_("Caching value (ms)")
+#define CACHING_LONGTEXT N_( \
+ "Allows you to modify the default caching value for UDP streams. This " \
+ "value should be set in millisecond units." )
+
+#define TTL_TEXT N_("Time To Live")
+#define TTL_LONGTEXT N_("Allows you to define the time to live of the " \
+ "outgoing stream.")
+
+#define GROUP_TEXT N_("Group packets")
+#define GROUP_LONGTEXT N_("Packets can be sent one by one at the right time " \
+ "or by groups. This allows you to give the number " \
+ "of packets that will be sent at a time. It " \
+ "helps reducing the scheduling load on " \
+ "heavily-loaded systems." )
+#define LATE_TEXT N_("Late delay (ms)" )
+#define LATE_LONGTEXT N_("Late packets are dropped. This allows you to give " \
+ "the time (in milliseconds) a packet is allowed to be" \
+ " late.")
+#define RAW_TEXT N_("Raw write")
+#define RAW_LONGTEXT N_("If you enable this option, packets will be sent " \
+ "directly, without trying to fill the MTU (ie, " \
+ "without trying to make the biggest possible packets " \
+ "in order to improve streaming)." )
+
vlc_module_begin();
- set_description( _("UDP stream ouput") );
+ set_description( _("UDP stream output") );
+ add_integer( SOUT_CFG_PREFIX "caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
+ add_integer( SOUT_CFG_PREFIX "ttl", 0, NULL,TTL_TEXT, TTL_LONGTEXT,
+ VLC_TRUE );
+ add_integer( SOUT_CFG_PREFIX "group", 1, NULL, GROUP_TEXT, GROUP_LONGTEXT,
+ VLC_TRUE );
+ add_integer( SOUT_CFG_PREFIX "late", 0, NULL, LATE_TEXT, LATE_LONGTEXT,
+ VLC_TRUE );
+ add_bool( SOUT_CFG_PREFIX "raw", 0, NULL, RAW_TEXT, RAW_LONGTEXT,
+ VLC_TRUE );
+
set_capability( "sout access", 100 );
add_shortcut( "udp" );
add_shortcut( "rtp" ); // Will work only with ts muxer
set_callbacks( Open, Close );
vlc_module_end();
-typedef struct sout_access_thread_s
+/*****************************************************************************
+ * Exported prototypes
+ *****************************************************************************/
+
+static const char *ppsz_sout_options[] = {
+ "caching",
+ "ttl",
+ "group",
+ "late",
+ "raw",
+ NULL
+};
+
+static int Write ( sout_access_out_t *, block_t * );
+static int WriteRaw( sout_access_out_t *, block_t * );
+static int Seek ( sout_access_out_t *, off_t );
+
+static void ThreadWrite( vlc_object_t * );
+static block_t *NewUDPPacket( sout_access_out_t *, mtime_t );
+
+typedef struct sout_access_thread_t
{
VLC_COMMON_MEMBERS
sout_instance_t *p_sout;
- sout_fifo_t *p_fifo;
+ block_fifo_t *p_fifo;
int i_handle;
+ int64_t i_caching;
+ int64_t i_late;
+ int i_group;
+
} sout_access_thread_t;
struct sout_access_out_sys_t
uint16_t i_sequence_number;
uint32_t i_ssrc;
- unsigned int i_mtu;
+ int i_mtu;
- sout_buffer_t *p_buffer;
+ block_t *p_buffer;
sout_access_thread_t *p_thread;
+ vlc_bool_t b_mtu_warning;
};
+#define DEFAULT_PORT 1234
+
/*****************************************************************************
* Open: open the file
*****************************************************************************/
module_t *p_network;
network_socket_t socket_desc;
- if( !( p_sys = p_access->p_sys =
- malloc( sizeof( sout_access_out_sys_t ) ) ) )
+ vlc_value_t val;
+
+ sout_CfgParse( p_access, SOUT_CFG_PREFIX,
+ ppsz_sout_options, p_access->p_cfg );
+
+ if( !( p_sys = malloc( sizeof( sout_access_out_sys_t ) ) ) )
{
- msg_Err( p_access, "Not enough memory" );
- return( VLC_EGENERIC );
+ msg_Err( p_access, "not enough memory" );
+ return VLC_EGENERIC;
}
+ memset( p_sys, 0, sizeof(sout_access_out_sys_t) );
+ p_access->p_sys = p_sys;
if( p_access->psz_access != NULL &&
!strcmp( p_access->psz_access, "rtp" ) )
{
- if( p_access->p_sout->psz_mux != NULL &&
- *p_access->p_sout->psz_mux &&
- strcmp( p_access->p_sout->psz_mux, "ts" ) &&
- strcmp( p_access->p_sout->psz_mux, "ts_dvbpsi" ) )
- {
- msg_Err( p_access, "rtp ouput work only with ts payload" );
- free( p_sys );
- return( VLC_EGENERIC );
- }
+ msg_Warn( p_access, "be careful that rtp output only works with ts "
+ "payload (not an error)" );
p_sys->b_rtpts = 1;
}
else
psz_dst_addr = psz_parser;
i_dst_port = 0;
+ if ( *psz_parser == '[' )
+ {
+ while( *psz_parser && *psz_parser != ']' )
+ {
+ psz_parser++;
+ }
+ }
while( *psz_parser && *psz_parser != ':' )
{
psz_parser++;
}
p_sys->p_thread =
- vlc_object_create( p_access,
- sizeof( sout_access_thread_t ) );
+ vlc_object_create( p_access, sizeof( sout_access_thread_t ) );
if( !p_sys->p_thread )
{
msg_Err( p_access, "out of memory" );
- return( VLC_EGENERIC );
+ return VLC_EGENERIC;
}
p_sys->p_thread->p_sout = p_access->p_sout;
p_sys->p_thread->b_die = 0;
p_sys->p_thread->b_error= 0;
- p_sys->p_thread->p_fifo = sout_FifoCreate( p_access->p_sout );
+ p_sys->p_thread->p_fifo = block_FifoNew( p_access );
socket_desc.i_type = NETWORK_UDP;
socket_desc.psz_server_addr = psz_dst_addr;
socket_desc.i_server_port = i_dst_port;
socket_desc.psz_bind_addr = "";
socket_desc.i_bind_port = 0;
+
+ var_Get( p_access, SOUT_CFG_PREFIX "ttl", &val );
+ socket_desc.i_ttl = val.i_int;
+
p_sys->p_thread->p_private = (void*)&socket_desc;
- if( !( p_network = module_Need( p_sys->p_thread,
- "network", "" ) ) )
+ if( !( p_network = module_Need( p_sys->p_thread, "network", NULL, 0 ) ) )
{
msg_Err( p_access, "failed to open a connection (udp)" );
- return( VLC_EGENERIC );
+ return VLC_EGENERIC;
}
module_Unneed( p_sys->p_thread, p_network );
p_sys->p_thread->i_handle = socket_desc.i_handle;
- p_sys->i_mtu = socket_desc.i_mtu;
- if( vlc_thread_create( p_sys->p_thread, "sout write thread",
- ThreadWrite, VLC_THREAD_PRIORITY_LOW, VLC_FALSE ) )
+ var_Get( p_access, SOUT_CFG_PREFIX "caching", &val );
+ p_sys->p_thread->i_caching = (int64_t)val.i_int * 1000;
+
+ var_Get( p_access, SOUT_CFG_PREFIX "group", &val );
+ p_sys->p_thread->i_group = val.i_int;
+
+ var_Get( p_access, SOUT_CFG_PREFIX "late", &val );
+ p_sys->p_thread->i_late = (int64_t)val.i_int * 1000;
+
+ p_sys->i_mtu = socket_desc.i_mtu;
+
+#ifdef WIN32
+ if( vlc_thread_create( p_sys->p_thread, "sout write thread", ThreadWrite,
+ VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
+#else
+ if( vlc_thread_create( p_sys->p_thread, "sout write thread", ThreadWrite,
+ VLC_THREAD_PRIORITY_OUTPUT, VLC_FALSE ) )
+#endif
{
msg_Err( p_access->p_sout, "cannot spawn sout access thread" );
vlc_object_destroy( p_sys->p_thread );
- return( VLC_EGENERIC );
+ return VLC_EGENERIC;
}
+ srand( (uint32_t)mdate());
p_sys->p_buffer = NULL;
- p_sys->i_sequence_number = 12; // FIXME should be random, used by rtp
- p_sys->i_ssrc = 4212; // FIXME " " " " " "
+ p_sys->i_sequence_number = rand()&0xffff;
+ p_sys->i_ssrc = rand()&0xffffffff;
- p_access->pf_write = Write;
- p_access->pf_seek = Seek;
+ var_Get( p_access, SOUT_CFG_PREFIX "raw", &val );
+ if( val.b_bool ) p_access->pf_write = WriteRaw;
+ else p_access->pf_write = Write;
- msg_Info( p_access,
- "Open: addr:`%s' port:`%d'",
- psz_dst_addr, i_dst_port );
+ p_access->pf_seek = Seek;
+
+ msg_Dbg( p_access, "udp access output opened(%s:%d)",
+ psz_dst_addr, i_dst_port );
free( psz_dst_addr );
+
+ /* update p_sout->i_out_pace_nocontrol */
+ p_access->p_sout->i_out_pace_nocontrol++;
+
return VLC_SUCCESS;
}
*****************************************************************************/
static void Close( vlc_object_t * p_this )
{
- sout_access_out_t *p_access = (sout_access_out_t*)p_this;
- sout_access_out_sys_t *p_sys = p_access->p_sys;
- int i;
+ sout_access_out_t *p_access = (sout_access_out_t*)p_this;
+ sout_access_out_sys_t *p_sys = p_access->p_sys;
+ int i;
p_sys->p_thread->b_die = 1;
for( i = 0; i < 10; i++ )
{
- sout_buffer_t *p_dummy;
-
- p_dummy = sout_BufferNew( p_access->p_sout, p_sys->i_mtu );
+ block_t *p_dummy = block_New( p_access, p_sys->i_mtu );
p_dummy->i_dts = 0;
p_dummy->i_pts = 0;
p_dummy->i_length = 0;
- sout_FifoPut( p_sys->p_thread->p_fifo, p_dummy );
+ block_FifoPut( p_sys->p_thread->p_fifo, p_dummy );
}
vlc_thread_join( p_sys->p_thread );
- sout_FifoDestroy( p_access->p_sout, p_sys->p_thread->p_fifo );
+ block_FifoRelease( p_sys->p_thread->p_fifo );
- if( p_sys->p_buffer )
- {
- sout_BufferDelete( p_access->p_sout, p_sys->p_buffer );
- }
+ if( p_sys->p_buffer ) block_Release( p_sys->p_buffer );
-#if defined( UNDER_CE )
- CloseHandle( (HANDLE)p_sys->p_thread->i_handle );
-#elif defined( WIN32 )
- closesocket( p_sys->p_thread->i_handle );
-#else
- close( p_sys->p_thread->i_handle );
-#endif
+ net_Close( p_sys->p_thread->i_handle );
+ /* update p_sout->i_out_pace_nocontrol */
+ p_access->p_sout->i_out_pace_nocontrol--;
+
+ msg_Dbg( p_access, "udp access output closed" );
free( p_sys );
- msg_Info( p_access, "Close" );
}
/*****************************************************************************
- * Read: standard read on a file descriptor.
+ * Write: standard write on a file descriptor.
*****************************************************************************/
-static int Write( sout_access_out_t *p_access, sout_buffer_t *p_buffer )
+static int Write( sout_access_out_t *p_access, block_t *p_buffer )
{
- sout_access_out_sys_t *p_sys = p_access->p_sys;
- unsigned int i_write;
+ sout_access_out_sys_t *p_sys = p_access->p_sys;
while( p_buffer )
{
- sout_buffer_t *p_next;
- if( p_buffer->i_size > p_sys->i_mtu )
- {
- msg_Warn( p_access, "arggggggggggggg packet size > mtu" );
- i_write = p_sys->i_mtu;
- }
- else
+ block_t *p_next;
+ int i_packets = 0;
+
+ if( !p_sys->b_mtu_warning && p_buffer->i_buffer > p_sys->i_mtu )
{
- i_write = p_buffer->i_size;
+ msg_Warn( p_access, "packet size > MTU, you should probably "
+ "increase the MTU" );
+ p_sys->b_mtu_warning = VLC_TRUE;
}
- /* if we have enough data, enque the buffer */
+ /* Check if there is enough space in the buffer */
if( p_sys->p_buffer &&
- p_sys->p_buffer->i_size + i_write > p_sys->i_mtu )
+ p_sys->p_buffer->i_buffer + p_buffer->i_buffer > p_sys->i_mtu )
{
- sout_FifoPut( p_sys->p_thread->p_fifo, p_sys->p_buffer );
+ block_FifoPut( p_sys->p_thread->p_fifo, p_sys->p_buffer );
p_sys->p_buffer = NULL;
}
- if( !p_sys->p_buffer )
+ while( p_buffer->i_buffer )
{
- p_sys->p_buffer = sout_BufferNew( p_access->p_sout, p_sys->i_mtu );
- p_sys->p_buffer->i_dts = p_buffer->i_dts;
- p_sys->p_buffer->i_size = 0;
- if( p_sys->b_rtpts )
+ int i_write = __MIN( p_buffer->i_buffer, p_sys->i_mtu );
+
+ i_packets++;
+
+ if( !p_sys->p_buffer )
{
- mtime_t i_timestamp = p_sys->p_buffer->i_dts * 9 / 100;
-
- /* add rtp/ts header */
- p_sys->p_buffer->p_buffer[0] = 0x80;
- p_sys->p_buffer->p_buffer[1] = 0x21; // mpeg2-ts
- p_sys->p_buffer->p_buffer[2] =
- ( p_sys->i_sequence_number >> 8 )&0xff;
- p_sys->p_buffer->p_buffer[3] =
- p_sys->i_sequence_number&0xff;
-
- p_sys->p_buffer->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
- p_sys->p_buffer->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
- p_sys->p_buffer->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
- p_sys->p_buffer->p_buffer[7] = i_timestamp&0xff;
-
- p_sys->p_buffer->p_buffer[ 8] =
- ( p_sys->i_ssrc >> 24 )&0xff;
- p_sys->p_buffer->p_buffer[ 9] =
- ( p_sys->i_ssrc >> 16 )&0xff;
- p_sys->p_buffer->p_buffer[10] =
- ( p_sys->i_ssrc >> 8 )&0xff;
- p_sys->p_buffer->p_buffer[11] = p_sys->i_ssrc&0xff;
-
- p_sys->p_buffer->i_size = 12;
+ p_sys->p_buffer = NewUDPPacket( p_access, p_buffer->i_dts );
+ if( !p_sys->p_buffer ) break;
}
- }
+ memcpy( p_sys->p_buffer->p_buffer + p_sys->p_buffer->i_buffer,
+ p_buffer->p_buffer, i_write );
- if( p_buffer->i_size > 0 )
- {
- memcpy( p_sys->p_buffer->p_buffer + p_sys->p_buffer->i_size,
- p_buffer->p_buffer,
- i_write );
- p_sys->p_buffer->i_size += i_write;
+ p_sys->p_buffer->i_buffer += i_write;
+ p_buffer->p_buffer += i_write;
+ p_buffer->i_buffer -= i_write;
+
+ if( p_sys->p_buffer->i_buffer == p_sys->i_mtu || i_packets > 1 )
+ {
+ /* Flush */
+ block_FifoPut( p_sys->p_thread->p_fifo, p_sys->p_buffer );
+ p_sys->p_buffer = NULL;
+ }
}
+
p_next = p_buffer->p_next;
- sout_BufferDelete( p_access->p_sout, p_buffer );
+ block_Release( p_buffer );
p_buffer = p_next;
}
return( p_sys->p_thread->b_error ? -1 : 0 );
}
+/*****************************************************************************
+ * WriteRaw: write p_buffer without trying to fill mtu
+ *****************************************************************************/
+static int WriteRaw( sout_access_out_t *p_access, block_t *p_buffer )
+{
+ sout_access_out_sys_t *p_sys = p_access->p_sys;
+
+ block_FifoPut( p_sys->p_thread->p_fifo, p_buffer );
+
+ return( p_sys->p_thread->b_error ? -1 : 0 );
+}
+
/*****************************************************************************
* Seek: seek to a specific location in a file
*****************************************************************************/
static int Seek( sout_access_out_t *p_access, off_t i_pos )
{
+ msg_Err( p_access, "UDP sout access cannot seek" );
+ return -1;
+}
+
+/*****************************************************************************
+ * NewUDPPacket: allocate a new UDP packet of size p_sys->i_mtu
+ *****************************************************************************/
+static block_t *NewUDPPacket( sout_access_out_t *p_access, mtime_t i_dts)
+{
+ sout_access_out_sys_t *p_sys = p_access->p_sys;
+ block_t *p_buffer;
+
+ p_buffer = block_New( p_access->p_sout, p_sys->i_mtu );
+ p_buffer->i_dts = i_dts;
+ p_buffer->i_buffer = 0;
+
+ if( p_sys->b_rtpts )
+ {
+ mtime_t i_timestamp = p_buffer->i_dts * 9 / 100;
+
+ /* add rtp/ts header */
+ p_buffer->p_buffer[0] = 0x80;
+ p_buffer->p_buffer[1] = 0x21; // mpeg2-ts
+
+ p_buffer->p_buffer[2] = ( p_sys->i_sequence_number >> 8 )&0xff;
+ p_buffer->p_buffer[3] = p_sys->i_sequence_number&0xff;
+ p_sys->i_sequence_number++;
- msg_Err( p_access, "udp sout access cannot seek" );
- return( -1 );
+ p_buffer->p_buffer[4] = ( i_timestamp >> 24 )&0xff;
+ p_buffer->p_buffer[5] = ( i_timestamp >> 16 )&0xff;
+ p_buffer->p_buffer[6] = ( i_timestamp >> 8 )&0xff;
+ p_buffer->p_buffer[7] = i_timestamp&0xff;
+
+ p_buffer->p_buffer[ 8] = ( p_sys->i_ssrc >> 24 )&0xff;
+ p_buffer->p_buffer[ 9] = ( p_sys->i_ssrc >> 16 )&0xff;
+ p_buffer->p_buffer[10] = ( p_sys->i_ssrc >> 8 )&0xff;
+ p_buffer->p_buffer[11] = p_sys->i_ssrc&0xff;
+
+ p_buffer->i_buffer = 12;
+ }
+
+ return p_buffer;
}
/*****************************************************************************
static void ThreadWrite( vlc_object_t *p_this )
{
sout_access_thread_t *p_thread = (sout_access_thread_t*)p_this;
- sout_instance_t *p_sout = p_thread->p_sout;
- sout_buffer_t *p_buffer;
- mtime_t i_date;
+ mtime_t i_date_last = -1;
+ mtime_t i_to_send = p_thread->i_group;
+ int i_dropped_packets = 0;
- while( !p_thread->b_die && p_thread->p_fifo->i_depth < 5 )
+ while( !p_thread->b_die )
{
- msleep( 10000 );
- }
- if( p_thread->b_die )
- {
- return;
- }
- p_buffer = sout_FifoShow( p_thread->p_fifo );
- i_date = mdate() - p_buffer->i_dts;
+ block_t *p_pk;
+ mtime_t i_date, i_sent;
- for( ;; )
- {
- mtime_t i_wait;
+ p_pk = block_FifoGet( p_thread->p_fifo );
- p_buffer = sout_FifoGet( p_thread->p_fifo );
+ i_date = p_thread->i_caching + p_pk->i_dts;
+ if( i_date_last > 0 )
+ {
+ if( i_date - i_date_last > 2000000 )
+ {
+ if( !i_dropped_packets )
+ msg_Dbg( p_thread, "mmh, hole ("I64Fd" > 2s) -> drop",
+ i_date - i_date_last );
+
+ block_Release( p_pk );
+ i_date_last = i_date;
+ i_dropped_packets++;
+ continue;
+ }
+ else if( i_date - i_date_last < 0 )
+ {
+ if( !i_dropped_packets )
+ msg_Dbg( p_thread, "mmh, packets in the past ("I64Fd")"
+ " -> drop", i_date - i_date_last );
+
+ block_Release( p_pk );
+ i_date_last = i_date;
+ i_dropped_packets++;
+ continue;
+ }
+ }
- if( p_thread->b_die )
+ i_sent = mdate();
+ if( p_thread->i_late > 0 && i_sent > i_date + p_thread->i_late )
{
- return;
+ if( !i_dropped_packets )
+ {
+ msg_Dbg( p_thread, "late packet to send (" I64Fd ") -> drop",
+ i_sent - i_date );
+ }
+ block_Release( p_pk );
+ i_date_last = i_date;
+ i_dropped_packets++;
+ continue;
}
- i_wait = i_date + p_buffer->i_dts;
- mwait( i_wait );
- if( i_wait - mdate() > MAX_ERROR ||
- i_wait - mdate() < -MAX_ERROR )
+ i_to_send--;
+ if ( !i_to_send )
{
- msg_Warn( p_sout, "resetting clock" );
- i_date = mdate() - p_buffer->i_dts;
+ mwait( i_date );
+ i_to_send = p_thread->i_group;
}
- send( p_thread->i_handle,
- p_buffer->p_buffer,
- p_buffer->i_size,
- 0 );
+ send( p_thread->i_handle, p_pk->p_buffer, p_pk->i_buffer, 0 );
- sout_BufferDelete( p_sout, p_buffer );
- }
-}
+ if( i_dropped_packets )
+ {
+ msg_Dbg( p_thread, "dropped %i packets", i_dropped_packets );
+ i_dropped_packets = 0;
+ }
+#if 0
+ i_sent = mdate();
+ if ( i_sent > i_date + 20000 )
+ {
+ msg_Dbg( p_thread, "packet has been sent too late (" I64Fd ")",
+ i_sent - i_date );
+ }
+#endif
+ block_Release( p_pk );
+ i_date_last = i_date;
+ }
+}
projects / vlc / blobdiff