/*****************************************************************************
* udp.c
*****************************************************************************
- * Copyright (C) 2001, 2002 VideoLAN
- * $Id: udp.c,v 1.16 2003/11/17 14:46:37 massiot Exp $
+ * Copyright (C) 2001-2005 the VideoLAN team
+ * $Id$
*
* 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 "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 WriteRaw( sout_access_out_t *, sout_buffer_t * );
-static int Seek ( sout_access_out_t *, off_t );
-
-static void ThreadWrite( vlc_object_t * );
-
-static sout_buffer_t *NewUDPPacket( sout_access_out_t *, mtime_t );
+#define MAX_EMPTY_BLOCKS 200
/*****************************************************************************
* Module descriptor
*****************************************************************************/
-#define CACHING_TEXT N_("caching value in ms")
+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 miliseconds units." )
+ "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 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") );
- add_category_hint( N_("udp stream output"), NULL , VLC_TRUE );
- add_integer( "udp-sout-caching", DEFAULT_PTS_DELAY / 1000, NULL, CACHING_TEXT, CACHING_LONGTEXT, VLC_TRUE );
+ set_description( _("UDP stream output") );
+ set_shortname( N_( "UDP" ) );
+ set_category( CAT_SOUT );
+ set_subcategory( SUBCAT_SOUT_ACO );
+ 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_suppressed_integer( SOUT_CFG_PREFIX "late" );
+ 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",
+ "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;
+ int i_group;
+
+ vlc_mutex_t blocks_lock;
+ block_t *p_empty_blocks;
+ int i_empty_depth;
} sout_access_thread_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;
- char *val;
+ vlc_value_t val;
- if( !( p_sys = p_access->p_sys =
- malloc( sizeof( sout_access_out_sys_t ) ) ) )
+ 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" ) )
{
- msg_Warn( p_access, "becarefull that rtp ouput work only with ts "
- "payload(not an error)" );
+ msg_Warn( p_access, "be careful that rtp output only works with ts "
+ "payload (not an error)" );
p_sys->b_rtpts = 1;
}
else
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 );
+ p_sys->p_thread->p_empty_blocks = NULL;
+ p_sys->p_thread->i_empty_depth = 0;
+ vlc_mutex_init( p_access, &p_sys->p_thread->blocks_lock );
- socket_desc.i_type = NETWORK_UDP;
+ /* FIXME: use net_OpenUDP API */
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;
- socket_desc.i_ttl = 0;
- if( ( val = sout_cfg_find_value( p_access->p_cfg, "ttl" ) ) )
- {
- socket_desc.i_ttl = atoi( val );
- }
+ socket_desc.i_handle = -1;
+ socket_desc.v6only = 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", "" ) ) )
+ p_network = module_Need( p_sys->p_thread, "network", "ipv4", VLC_TRUE );
+ if( p_network != NULL )
+ module_Unneed( p_sys->p_thread, p_network );
+
+ if( socket_desc.i_handle == -1 )
{
- msg_Err( p_access, "failed to open a connection (udp)" );
- return( VLC_EGENERIC );
+ p_network = module_Need( p_sys->p_thread, "network", "ipv6", VLC_TRUE );
+ if( p_network != NULL )
+ module_Unneed( p_sys->p_thread, p_network );
+
+ if( socket_desc.i_handle == -1 )
+ {
+ msg_Err( p_access, "failed to open a connection (udp)" );
+ return VLC_EGENERIC;
+ }
}
- module_Unneed( p_sys->p_thread, p_network );
p_sys->p_thread->i_handle = socket_desc.i_handle;
- p_sys->p_thread->i_caching = config_GetInt( p_this, "udp-sout-caching" ) * 1000;
- if( ( val = sout_cfg_find_value( p_access->p_cfg, "caching" ) ) )
- {
- p_sys->p_thread->i_caching = atoll( val ) * 1000;
- }
+ net_StopRecv( socket_desc.i_handle );
+
+ 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;
- p_sys->i_mtu = socket_desc.i_mtu;
+ p_sys->i_mtu = socket_desc.i_mtu;
if( vlc_thread_create( p_sys->p_thread, "sout write thread", ThreadWrite,
- VLC_THREAD_PRIORITY_OUTPUT, VLC_FALSE ) )
+ VLC_THREAD_PRIORITY_HIGHEST, VLC_FALSE ) )
{
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->i_sequence_number = rand()&0xffff;
p_sys->i_ssrc = rand()&0xffffffff;
- if( sout_cfg_find( p_access->p_cfg, "raw" ) )
- {
- p_access->pf_write = WriteRaw;
- }
- else
- {
- 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;
+
+ p_access->pf_seek = Seek;
- msg_Info( p_access, "Open: addr:`%s' port:`%d'",
- psz_dst_addr, i_dst_port );
+ 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 )
+ if( p_sys->p_buffer ) block_Release( p_sys->p_buffer );
+ while ( p_sys->p_thread->p_empty_blocks != NULL )
{
- sout_BufferDelete( p_access->p_sout, p_sys->p_buffer );
+ block_t *p_next = p_sys->p_thread->p_empty_blocks->p_next;
+ block_Release( p_sys->p_thread->p_empty_blocks );
+ p_sys->p_thread->p_empty_blocks = p_next;
}
+ vlc_mutex_destroy( &p_sys->p_thread->blocks_lock );
-#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" );
}
/*****************************************************************************
* 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 );
+ if( p_sys->p_buffer->i_dts + p_sys->p_thread->i_caching < mdate() )
+ {
+ msg_Dbg( p_access, "late packet for udp input (" I64Fd ")",
+ mdate() - p_sys->p_buffer->i_dts
+ - p_sys->p_thread->i_caching );
+ }
+ 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 = NewUDPPacket( p_access, p_buffer->i_dts );
- }
+ int i_write = __MIN( p_buffer->i_buffer, p_sys->i_mtu );
- if( p_buffer->i_size > 0 )
- {
- memcpy( p_sys->p_buffer->p_buffer + p_sys->p_buffer->i_size,
+ i_packets++;
+
+ if( !p_sys->p_buffer )
+ {
+ 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 );
- 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_buffer->i_flags & BLOCK_FLAG_CLOCK )
+ {
+ if ( p_sys->p_buffer->i_flags & BLOCK_FLAG_CLOCK )
+ msg_Warn( p_access, "putting two PCRs at once" );
+ p_sys->p_buffer->i_flags |= BLOCK_FLAG_CLOCK;
+ }
+
+ if( p_sys->p_buffer->i_buffer == p_sys->i_mtu || i_packets > 1 )
+ {
+ /* Flush */
+ if( p_sys->p_buffer->i_dts + p_sys->p_thread->i_caching
+ < mdate() )
+ {
+ msg_Dbg( p_access, "late packet for udp input (" I64Fd ")",
+ mdate() - p_sys->p_buffer->i_dts
+ - p_sys->p_thread->i_caching );
+ }
+ 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;
}
/*****************************************************************************
* WriteRaw: write p_buffer without trying to fill mtu
*****************************************************************************/
-static int WriteRaw( sout_access_out_t *p_access, sout_buffer_t *p_buffer )
+static int WriteRaw( sout_access_out_t *p_access, block_t *p_buffer )
{
sout_access_out_sys_t *p_sys = p_access->p_sys;
- sout_FifoPut( p_sys->p_thread->p_fifo, p_buffer );
+ block_FifoPut( p_sys->p_thread->p_fifo, p_buffer );
return( p_sys->p_thread->b_error ? -1 : 0 );
}
*****************************************************************************/
static int Seek( sout_access_out_t *p_access, off_t i_pos )
{
-
- msg_Err( p_access, "udp sout access cannot seek" );
- return( -1 );
+ msg_Err( p_access, "UDP sout access cannot seek" );
+ return -1;
}
/*****************************************************************************
* NewUDPPacket: allocate a new UDP packet of size p_sys->i_mtu
*****************************************************************************/
-static sout_buffer_t *NewUDPPacket( sout_access_out_t *p_access, mtime_t i_dts)
+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;
- sout_buffer_t *p_buffer;
+ block_t *p_buffer;
+
+ vlc_mutex_lock( &p_sys->p_thread->blocks_lock );
+ while ( p_sys->p_thread->i_empty_depth > MAX_EMPTY_BLOCKS )
+ {
+ p_buffer = p_sys->p_thread->p_empty_blocks;
+ p_sys->p_thread->p_empty_blocks =
+ p_sys->p_thread->p_empty_blocks->p_next;
+ p_sys->p_thread->i_empty_depth--;
+ vlc_mutex_unlock( &p_sys->p_thread->blocks_lock );
+ block_Release( p_buffer );
+ vlc_mutex_lock( &p_sys->p_thread->blocks_lock );
+ }
+ p_buffer = p_sys->p_thread->p_empty_blocks;
+ if ( p_buffer != NULL )
+ {
+ p_sys->p_thread->p_empty_blocks =
+ p_sys->p_thread->p_empty_blocks->p_next;
+ p_sys->p_thread->i_empty_depth--;
+ vlc_mutex_unlock( &p_sys->p_thread->blocks_lock );
+ p_buffer->p_next = NULL;
+ p_buffer->i_flags = 0;
+ p_buffer = block_Realloc( p_buffer, 0, p_sys->i_mtu );
+ }
+ else
+ {
+ vlc_mutex_unlock( &p_sys->p_thread->blocks_lock );
+ p_buffer = block_New( p_access->p_sout, p_sys->i_mtu );
+ }
- p_buffer = sout_BufferNew( p_access->p_sout, p_sys->i_mtu );
p_buffer->i_dts = i_dts;
- p_buffer->i_size = 0;
+ p_buffer->i_buffer = 0;
if( p_sys->b_rtpts )
{
p_buffer->p_buffer[10] = ( p_sys->i_ssrc >> 8 )&0xff;
p_buffer->p_buffer[11] = p_sys->i_ssrc&0xff;
- p_buffer->i_size = 12;
+ 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;
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 )
+ while( !p_thread->b_die )
{
- sout_buffer_t *p_pk;
+ block_t *p_pk;
mtime_t i_date, i_sent;
- p_pk = sout_FifoGet( p_thread->p_fifo );
+ p_pk = block_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 )
{
- msg_Dbg( p_thread, "mmh, hole > 2s -> drop" );
+ if( !i_dropped_packets )
+ msg_Dbg( p_thread, "mmh, hole ("I64Fd" > 2s) -> drop",
+ i_date - i_date_last );
+
+ vlc_mutex_lock( &p_thread->blocks_lock );
+ p_pk->p_next = p_thread->p_empty_blocks;
+ p_thread->p_empty_blocks = p_pk;
+ p_thread->i_empty_depth++;
+ vlc_mutex_unlock( &p_thread->blocks_lock );
- sout_BufferDelete( p_sout, p_pk );
i_date_last = i_date;
+ i_dropped_packets++;
continue;
}
- else if( i_date - i_date_last < 0 )
+ else if( i_date - i_date_last < -1000 )
{
- msg_Dbg( p_thread, "mmh, paquets in the past -> drop" );
-
- sout_BufferDelete( p_sout, p_pk );
- i_date_last = i_date;
- continue;
+ if( !i_dropped_packets )
+ msg_Dbg( p_thread, "mmh, packets in the past ("I64Fd")",
+ i_date_last - i_date );
}
}
- mwait( i_date );
- send( p_thread->i_handle, p_pk->p_buffer, p_pk->i_size, 0 );
+ i_to_send--;
+ if ( !i_to_send || (p_pk->i_flags & BLOCK_FLAG_CLOCK) )
+ {
+ mwait( i_date );
+ i_to_send = p_thread->i_group;
+ }
+ send( p_thread->i_handle, p_pk->p_buffer, p_pk->i_buffer, 0 );
+
+ if( i_dropped_packets )
+ {
+ msg_Dbg( p_thread, "dropped %i packets", i_dropped_packets );
+ i_dropped_packets = 0;
+ }
+
+#if 1
i_sent = mdate();
if ( i_sent > i_date + 20000 )
{
msg_Dbg( p_thread, "packet has been sent too late (" I64Fd ")",
i_sent - i_date );
}
- sout_BufferDelete( p_sout, p_pk );
+#endif
+
+ vlc_mutex_lock( &p_thread->blocks_lock );
+ p_pk->p_next = p_thread->p_empty_blocks;
+ p_thread->p_empty_blocks = p_pk;
+ p_thread->i_empty_depth++;
+ vlc_mutex_unlock( &p_thread->blocks_lock );
+
i_date_last = i_date;
}
}
projects / vlc / blobdiff