-/*****************************************************************************\r
- * netsync.c: synchronisation between several network clients.\r
- *****************************************************************************\r
- * Copyright (C) 2004 VideoLAN\r
- * $Id$\r
- *\r
- * Authors: Gildas Bazin <gbazin@videolan.org>\r
- *\r
- * This program is free software; you can redistribute it and/or modify\r
- * it under the terms of the GNU General Public License as published by\r
- * the Free Software Foundation; either version 2 of the License, or\r
- * (at your option) any later version.\r
- *\r
- * This program is distributed in the hope that it will be useful,\r
- * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
- * GNU General Public License for more details.\r
- *\r
- * You should have received a copy of the GNU General Public License\r
- * along with this program; if not, write to the Free Software\r
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.\r
- *****************************************************************************/\r
-\r
-/*****************************************************************************\r
- * Preamble\r
- *****************************************************************************/\r
-#include <stdlib.h>\r
-#include <vlc/vlc.h>\r
-#include <vlc/intf.h>\r
-\r
-#ifdef HAVE_UNISTD_H\r
-# include <unistd.h>\r
-#endif\r
-\r
-#ifdef HAVE_SYS_TIME_H\r
-# include <sys/time.h>\r
-#endif\r
-#include <sys/types.h>\r
-\r
-#ifdef WIN32\r
-# include <winsock2.h>\r
-# include <ws2tcpip.h>\r
-# ifndef IN_MULTICAST\r
-# define IN_MULTICAST(a) IN_CLASSD(a)\r
-# endif\r
-#else\r
-# include <sys/socket.h>\r
-# include <netinet/in.h>\r
-# if HAVE_ARPA_INET_H\r
-# include <arpa/inet.h>\r
-# elif defined( SYS_BEOS )\r
-# include <net/netdb.h>\r
-# endif\r
-#endif\r
-\r
-#ifdef UNDER_CE\r
-# define close(a) CloseHandle(a);\r
-#elif defined( WIN32 )\r
-# define close(a) closesocket(a);\r
-#endif\r
-\r
-#include "network.h"\r
-\r
-#define NETSYNC_PORT_MASTER 9875\r
-#define NETSYNC_PORT_SLAVE 9876\r
-\r
-/* Needed for Solaris */\r
-#ifndef INADDR_NONE\r
-#define INADDR_NONE 0xffffffff\r
-#endif\r
-\r
-/*****************************************************************************\r
- * Module descriptor\r
- *****************************************************************************/\r
-static int Activate( vlc_object_t * );\r
-static void Close ( vlc_object_t * );\r
-\r
-static mtime_t GetClockRef( intf_thread_t *, mtime_t );\r
-\r
-#define NETSYNC_TEXT N_( "Act as master for network synchronisation" )\r
-#define NETSYNC_LONGTEXT N_( "Allows you to specify if this client should " \\r
- "act as the master client for the network synchronisation." )\r
-\r
-#define MIP_TEXT N_( "Master client ip address" )\r
-#define MIP_LONGTEXT N_( "Allows you to specify the ip address of " \\r
- "the master client used for the network synchronisation." )\r
-\r
-vlc_module_begin();\r
- set_description( _("Network synchronisation") );\r
-\r
- add_bool( "netsync-master", 0, NULL,\r
- NETSYNC_TEXT, NETSYNC_LONGTEXT, VLC_TRUE );\r
- add_string( "netsync-master-ip", NULL, NULL, MIP_TEXT, MIP_LONGTEXT,\r
- VLC_TRUE );\r
-\r
- set_capability( "interface", 0 );\r
- set_callbacks( Activate, Close );\r
-vlc_module_end();\r
-\r
-struct intf_sys_t\r
-{\r
- input_thread_t *p_input;\r
-};\r
-\r
-/*****************************************************************************\r
- * Local prototypes\r
- *****************************************************************************/\r
-static void Run( intf_thread_t *p_intf );\r
-\r
-/*****************************************************************************\r
- * Activate: initialize and create stuff\r
- *****************************************************************************/\r
-static int Activate( vlc_object_t *p_this )\r
-{\r
- intf_thread_t *p_intf = (intf_thread_t*)p_this;\r
-\r
- msg_Info( p_intf, "Using the netsync interface module..." );\r
-\r
- p_intf->p_sys = malloc( sizeof( intf_sys_t ) );\r
- if( !p_intf->p_sys )\r
- {\r
- msg_Err( p_intf, "no memory" );\r
- return VLC_ENOMEM;\r
- }\r
-\r
- p_intf->p_sys->p_input = NULL;\r
-\r
- p_intf->pf_run = Run;\r
- return VLC_SUCCESS;\r
-}\r
-\r
-/*****************************************************************************\r
- * Close: destroy interface\r
- *****************************************************************************/\r
-void Close( vlc_object_t *p_this )\r
-{\r
- intf_thread_t *p_intf = (intf_thread_t*)p_this;\r
-\r
- free( p_intf->p_sys );\r
-}\r
-\r
-/*****************************************************************************\r
- * Run: interface thread\r
- *****************************************************************************/\r
-static void Run( intf_thread_t *p_intf )\r
-{\r
-#define MAX_MSG_LENGTH (2 * sizeof(int64_t))\r
-\r
- vlc_bool_t b_master = config_GetInt( p_intf, "netsync-master" );\r
- char *psz_master;\r
- char p_data[MAX_MSG_LENGTH];\r
- int i_socket;\r
-\r
- if( !b_master )\r
- {\r
- psz_master = config_GetPsz( p_intf, "netsync-master-ip" );\r
- if( psz_master == NULL )\r
- {\r
- msg_Err( p_intf, "master address not specified" );\r
- return;\r
- }\r
- }\r
-\r
- i_socket = net_OpenUDP( p_intf, NULL,\r
- b_master ? NETSYNC_PORT_MASTER : NETSYNC_PORT_SLAVE,\r
- b_master ? NULL : psz_master,\r
- b_master ? 0 : NETSYNC_PORT_MASTER );\r
-\r
- if( !b_master )\r
- free( psz_master );\r
- \r
- if( i_socket < 0 )\r
- {\r
- msg_Err( p_intf, "failed opening UDP socket." );\r
- return;\r
- }\r
-\r
- /* High priority thread */\r
- vlc_thread_set_priority( p_intf, VLC_THREAD_PRIORITY_INPUT );\r
-\r
- while( !p_intf->b_die )\r
- {\r
- struct timeval timeout;\r
- fd_set fds_r;\r
-\r
- /* Update the input */\r
- if( p_intf->p_sys->p_input == NULL )\r
- {\r
- p_intf->p_sys->p_input =\r
- (input_thread_t *)vlc_object_find( p_intf, VLC_OBJECT_INPUT,\r
- FIND_ANYWHERE );\r
- }\r
- else if( p_intf->p_sys->p_input->b_dead )\r
- {\r
- vlc_object_release( p_intf->p_sys->p_input );\r
- p_intf->p_sys->p_input = NULL;\r
- }\r
-\r
- if( p_intf->p_sys->p_input == NULL )\r
- {\r
- /* Wait a bit */\r
- msleep( INTF_IDLE_SLEEP );\r
- continue;\r
- }\r
-\r
- /*\r
- * We now have an input\r
- */\r
-\r
- /* Initialize file descriptor set and timeout (0.5s) */\r
- FD_ZERO( &fds_r );\r
- FD_SET( i_socket, &fds_r );\r
- timeout.tv_sec = 0;\r
- timeout.tv_usec = 500000;\r
-\r
- if( b_master )\r
- {\r
- struct sockaddr_storage from;\r
- mtime_t i_date, i_clockref, i_master_clockref;\r
- int i_struct_size, i_read, i_ret;\r
-\r
- /* Don't block */\r
- i_ret = select( i_socket + 1, &fds_r, 0, 0, &timeout );\r
- if( i_ret == 0 ) continue;\r
- if( i_ret < 0 )\r
- {\r
- /* Wait a bit */\r
- msleep( INTF_IDLE_SLEEP );\r
- continue;\r
- }\r
-\r
- /* We received something */\r
- i_struct_size = sizeof( from );\r
- i_read = recvfrom( i_socket, p_data, MAX_MSG_LENGTH, 0,\r
- (struct sockaddr*)&from, &i_struct_size );\r
-\r
- i_clockref = ntoh64(*(int64_t *)p_data);\r
-\r
- i_date = mdate();\r
- *(int64_t *)p_data = hton64( i_date );\r
-\r
- i_master_clockref = GetClockRef( p_intf, i_clockref );\r
- *(((int64_t *)p_data)+1) = hton64( i_master_clockref );\r
-\r
- /* Reply to the sender */\r
- sendto( i_socket, p_data, 2 * sizeof(int64_t), 0,\r
- (struct sockaddr *)&from, i_struct_size );\r
-\r
- msg_Dbg( p_intf, "Master clockref: "I64Fd" -> "I64Fd", from %s "\r
- "(date: "I64Fd")", i_clockref, i_master_clockref,\r
- from.ss_family == AF_INET\r
- ? inet_ntoa(((struct sockaddr_in *)&from)->sin_addr)\r
- : "non-IPv4", i_date );\r
- }\r
- else\r
- {\r
- mtime_t i_send_date, i_receive_date, i_master_date, i_diff_date;\r
- mtime_t i_master_clockref, i_client_clockref, i_drift;\r
- mtime_t i_clockref = 0;\r
- int i_sent, i_read, i_ret;\r
-\r
- /* Send clock request to the master */\r
- *(int64_t *)p_data = hton64( i_clockref );\r
- i_send_date = mdate();\r
-\r
- i_sent = send( i_socket, p_data, sizeof(int64_t), 0 );\r
- if( i_sent <= 0 )\r
- {\r
- /* Wait a bit */\r
- msleep( INTF_IDLE_SLEEP );\r
- continue;\r
- }\r
-\r
- /* Don't block */\r
- i_ret = select(i_socket + 1, &fds_r, 0, 0, &timeout);\r
- if( i_ret == 0 ) continue;\r
- if( i_ret < 0 )\r
- {\r
- /* Wait a bit */\r
- msleep( INTF_IDLE_SLEEP );\r
- continue;\r
- }\r
-\r
- i_receive_date = mdate();\r
-\r
- i_read = recv( i_socket, p_data, MAX_MSG_LENGTH, 0 );\r
- if( i_read <= 0 )\r
- {\r
- /* Wait a bit */\r
- msleep( INTF_IDLE_SLEEP );\r
- continue;\r
- }\r
-\r
- i_master_date = ntoh64(*(int64_t *)p_data);\r
- i_master_clockref = ntoh64(*(((int64_t *)p_data)+1));\r
-\r
- i_diff_date = i_receive_date -\r
- ((i_receive_date - i_send_date) / 2 + i_master_date);\r
-\r
- i_client_clockref = i_drift = 0;\r
- if( p_intf->p_sys->p_input && i_master_clockref )\r
- {\r
- i_client_clockref = GetClockRef( p_intf, i_clockref );\r
- i_drift = i_client_clockref - i_master_clockref - i_diff_date;\r
-\r
- /* Update our clock to match the master's one */\r
- if( i_client_clockref )\r
- p_intf->p_sys->p_input->i_pts_delay -= i_drift;\r
- }\r
-\r
- msg_Dbg( p_intf, "Slave clockref: "I64Fd" -> "I64Fd" -> "I64Fd", "\r
- "clock diff: "I64Fd" drift: "I64Fd,\r
- i_clockref, i_master_clockref, \r
- i_client_clockref, i_diff_date, i_drift );\r
-\r
- /* Wait a bit */\r
- msleep( INTF_IDLE_SLEEP );\r
- }\r
- }\r
-\r
- if( p_intf->p_sys->p_input ) vlc_object_release( p_intf->p_sys->p_input );\r
- net_Close( i_socket );\r
-}\r
-\r
-static mtime_t GetClockRef( intf_thread_t *p_intf, mtime_t i_pts )\r
-{\r
- input_thread_t *p_input = p_intf->p_sys->p_input;\r
- pgrm_descriptor_t *p_pgrm;\r
-\r
- if( !p_input ) return 0;\r
-\r
-#if 0\r
- p_pgrm = p_input->stream.p_selected_program;\r
- if( p_pgrm ) return input_ClockGetTS( p_input, p_pgrm, i_pts );\r
-#else\r
-#warning "This code is currently broken. FIXME!!!"\r
-#endif\r
-\r
- return 0;\r
-}\r
+/*****************************************************************************
+ * netsync.c: synchronisation between several network clients.
+ *****************************************************************************
+ * Copyright (C) 2004 the VideoLAN team
+ * $Id$
+ *
+ * Authors: Gildas Bazin <gbazin@videolan.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <vlc_common.h>
+#include <vlc_plugin.h>
+#include <vlc_interface.h>
+#include <vlc_input.h>
+#include <vlc_es_out.h>
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#ifdef HAVE_SYS_TIME_H
+# include <sys/time.h>
+#endif
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_POLL
+# include <poll.h>
+#endif
+
+#include <vlc_network.h>
+
+#define NETSYNC_PORT 9875
+
+/* Needed for Solaris */
+#ifndef INADDR_NONE
+#define INADDR_NONE 0xffffffff
+#endif
+
+/* FIXME: UGLY UGLY !! Netsync should be totally reworked */
+#include "../../src/input/input_internal.h"
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+static int Activate( vlc_object_t * );
+static void Close ( vlc_object_t * );
+
+static mtime_t GetClockRef( intf_thread_t *, mtime_t );
+
+/// \bug [String] This string is BAD.
+#define NETSYNC_TEXT N_( "Act as master" )
+#define NETSYNC_LONGTEXT N_( "Should " \
+ "act as the master client for the network synchronisation?" )
+
+/// \bug [String] This string is BAD.
+#define MIP_TEXT N_( "Master client ip address" )
+#define MIP_LONGTEXT N_( "IP address of " \
+ "the master client used for the network synchronisation." )
+
+vlc_module_begin();
+ set_shortname( N_("Network Sync"));
+ set_description( N_("Network synchronisation") );
+ set_category( CAT_ADVANCED );
+ set_subcategory( SUBCAT_ADVANCED_MISC );
+
+ add_bool( "netsync-master", 0, NULL,
+ NETSYNC_TEXT, NETSYNC_LONGTEXT, true );
+ add_string( "netsync-master-ip", NULL, NULL, MIP_TEXT, MIP_LONGTEXT,
+ true );
+
+ set_capability( "interface", 0 );
+ set_callbacks( Activate, Close );
+vlc_module_end();
+
+struct intf_sys_t
+{
+ input_thread_t *p_input;
+};
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static void Run( intf_thread_t *p_intf );
+
+/*****************************************************************************
+ * Activate: initialize and create stuff
+ *****************************************************************************/
+static int Activate( vlc_object_t *p_this )
+{
+ intf_thread_t *p_intf = (intf_thread_t*)p_this;
+
+ p_intf->p_sys = malloc( sizeof( intf_sys_t ) );
+ if( !p_intf->p_sys )
+ {
+ msg_Err( p_intf, "no memory" );
+ return VLC_ENOMEM;
+ }
+
+ p_intf->p_sys->p_input = NULL;
+
+ p_intf->pf_run = Run;
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * Close: destroy interface
+ *****************************************************************************/
+void Close( vlc_object_t *p_this )
+{
+ intf_thread_t *p_intf = (intf_thread_t*)p_this;
+
+ free( p_intf->p_sys );
+}
+
+/*****************************************************************************
+ * Run: interface thread
+ *****************************************************************************/
+static void Run( intf_thread_t *p_intf )
+{
+#define MAX_MSG_LENGTH (2 * sizeof(int64_t))
+
+ bool b_master = config_GetInt( p_intf, "netsync-master" );
+ char *psz_master = NULL;
+ char p_data[MAX_MSG_LENGTH];
+ int i_socket;
+
+ if( !b_master )
+ {
+ psz_master = config_GetPsz( p_intf, "netsync-master-ip" );
+ if( psz_master == NULL )
+ {
+ msg_Err( p_intf, "master address not specified" );
+ return;
+ }
+ }
+
+ if( b_master )
+ i_socket = net_ListenUDP1( VLC_OBJECT(p_intf), NULL, NETSYNC_PORT );
+ else
+ i_socket = net_ConnectUDP( VLC_OBJECT(p_intf), psz_master, NETSYNC_PORT, 0 );
+
+ free( psz_master );
+
+ if( i_socket < 0 )
+ {
+ msg_Err( p_intf, "failed opening UDP socket" ); /* str review: is this good enough? */
+ return;
+ }
+
+ /* High priority thread */
+ vlc_thread_set_priority( p_intf, VLC_THREAD_PRIORITY_INPUT );
+
+ while( !intf_ShouldDie( p_intf ) )
+ {
+ /* Update the input */
+ if( p_intf->p_sys->p_input == NULL )
+ {
+ p_intf->p_sys->p_input =
+ (input_thread_t *)vlc_object_find( p_intf, VLC_OBJECT_INPUT,
+ FIND_ANYWHERE );
+ }
+ else if( p_intf->p_sys->p_input->b_dead )
+ {
+ vlc_object_release( p_intf->p_sys->p_input );
+ p_intf->p_sys->p_input = NULL;
+ }
+
+ if( p_intf->p_sys->p_input == NULL )
+ {
+ /* Wait a bit */
+ msleep( INTF_IDLE_SLEEP );
+ continue;
+ }
+
+ /*
+ * We now have an input
+ */
+
+ /* Initialize file descriptor set and timeout (0.5s) */
+ /* FIXME: arbitrary tick */
+ struct pollfd ufd = { .fd = i_socket, .events = POLLIN, };
+
+ if( b_master )
+ {
+ struct sockaddr_storage from;
+ mtime_t i_date, i_clockref, i_master_clockref;
+ int i_struct_size, i_read, i_ret;
+
+ /* Don't block */
+ i_ret = poll( &ufd, 1, 500 );
+ if( i_ret == 0 ) continue;
+ if( i_ret < 0 )
+ {
+ /* Wait a bit */
+ msleep( INTF_IDLE_SLEEP );
+ continue;
+ }
+
+ /* We received something */
+ i_struct_size = sizeof( from );
+ i_read = recvfrom( i_socket, p_data, MAX_MSG_LENGTH, 0,
+ (struct sockaddr*)&from,
+ (unsigned int *)&i_struct_size );
+
+ i_clockref = ntoh64(*(int64_t *)p_data);
+
+ i_date = mdate();
+ *(int64_t *)p_data = hton64( i_date );
+
+ i_master_clockref = GetClockRef( p_intf, i_clockref );
+ *(((int64_t *)p_data)+1) = hton64( i_master_clockref );
+
+ /* Reply to the sender */
+ sendto( i_socket, p_data, 2 * sizeof(int64_t), 0,
+ (struct sockaddr *)&from, i_struct_size );
+
+#if 0
+ msg_Dbg( p_intf, "Master clockref: %"PRId64" -> %"PRId64", from %s "
+ "(date: %"PRId64")", i_clockref, i_master_clockref,
+ from.ss_family == AF_INET
+ ? inet_ntoa(((struct sockaddr_in *)&from)->sin_addr)
+ : "non-IPv4", i_date );
+#endif
+ }
+ else
+ {
+ mtime_t i_send_date, i_receive_date, i_master_date, i_diff_date;
+ mtime_t i_master_clockref, i_client_clockref, i_drift;
+ mtime_t i_clockref = 0;
+ int i_sent, i_read, i_ret;
+
+ /* Send clock request to the master */
+ *(int64_t *)p_data = hton64( i_clockref );
+ i_send_date = mdate();
+
+ i_sent = send( i_socket, p_data, sizeof(int64_t), 0 );
+ if( i_sent <= 0 )
+ {
+ /* Wait a bit */
+ msleep( INTF_IDLE_SLEEP );
+ continue;
+ }
+
+ /* Don't block */
+ i_ret = poll( &ufd, 1, 500 );
+ if( i_ret == 0 ) continue;
+ if( i_ret < 0 )
+ {
+ /* Wait a bit */
+ msleep( INTF_IDLE_SLEEP );
+ continue;
+ }
+
+ i_receive_date = mdate();
+
+ i_read = recv( i_socket, p_data, MAX_MSG_LENGTH, 0 );
+ if( i_read <= 0 )
+ {
+ /* Wait a bit */
+ msleep( INTF_IDLE_SLEEP );
+ continue;
+ }
+
+ i_master_date = ntoh64(*(int64_t *)p_data);
+ i_master_clockref = ntoh64(*(((int64_t *)p_data)+1));
+
+ i_diff_date = i_receive_date -
+ ((i_receive_date - i_send_date) / 2 + i_master_date);
+
+ i_client_clockref = i_drift = 0;
+ if( p_intf->p_sys->p_input && i_master_clockref )
+ {
+ i_client_clockref = GetClockRef( p_intf, i_clockref );
+ i_drift = i_client_clockref - i_master_clockref - i_diff_date;
+
+ /* Update our clock to match the master's one */
+ if( i_client_clockref )
+ p_intf->p_sys->p_input->i_pts_delay -= i_drift;
+ }
+
+#if 0
+ msg_Dbg( p_intf, "Slave clockref: %"PRId64" -> %"PRId64" -> %"PRId64", "
+ "clock diff: %"PRId64" drift: %"PRId64,
+ i_clockref, i_master_clockref,
+ i_client_clockref, i_diff_date, i_drift );
+#endif
+
+ /* Wait a bit */
+ msleep( INTF_IDLE_SLEEP );
+ }
+ }
+
+ if( p_intf->p_sys->p_input ) vlc_object_release( p_intf->p_sys->p_input );
+ net_Close( i_socket );
+}
+
+static mtime_t GetClockRef( intf_thread_t *p_intf, mtime_t i_pts )
+{
+ input_thread_t *p_input = p_intf->p_sys->p_input;
+ mtime_t i_ts;
+
+ if( !p_input || !p_input->p->p_es_out ) return 0;
+
+ if( es_out_Control( p_input->p->p_es_out, ES_OUT_GET_TS, i_pts, &i_ts ) ==
+ VLC_SUCCESS )
+ {
+ return i_ts;
+ }
+
+ return 0;
+}
projects / vlc / blobdiff