research.m1stereo.tv/gitweb/ - melted/blob - src/melted/melted.c

   1 /*
   2  * melted.c -- MLT Video TCP Server
   3  *
   4  * Copyright (C) 2002-2009 Ushodaya Enterprises Limited
   5  * Authors:
   6  *     Dan Dennedy <dan@dennedy.org>
   7  *     Charles Yates <charles.yates@pandora.be>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  22  */
  23
  24 /* System header files */
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <sys/types.h>
  29 #include <unistd.h>
  30 #include <time.h>
  31 #include <sched.h>
  32 #include <signal.h>
  33
  34 #include <framework/mlt.h>
  35 #include <mvcp/mvcp_notifier.h>
  36 #include <mvcp/mvcp_status.h>
  37
  38 /* Application header files */
  39 #include "melted_server.h"
  40 #include "melted_log.h"
  41 #include "melted_commands.h"
  42 #include "melted_unit.h"
  43
  44 /** Our server context.
  45 */
  46
  47 static melted_server server = NULL;
  48
  49 /** atexit shutdown handler for the server.
  50 */
  51
  52 static void main_cleanup( )
  53 {
  54         melted_server_close( server );
  55 }
  56
  57 /** Report usage and exit.
  58 */
  59
  60 void usage( char *app )
  61 {
  62         fprintf( stderr, "Usage: %s [-test] [-port NNNN] [-c config-file]\n", app );
  63         exit( 0 );
  64 }
  65
  66 /** The main function.
  67 */
  68
  69 int main( int argc, char **argv )
  70 {
  71         int error = 0;
  72         int index = 0;
  73         int background = 1;
  74         struct timespec tm = { 1, 0 };
  75         struct sched_param scp;
  76         mvcp_status_t status;
  77         struct {
  78                 int clip_index;
  79                 int is_logged;
  80         } asrun[ MAX_UNITS ];
  81         const char *config_file = "/etc/melted.conf";
  82
  83         // Use realtime scheduling if possible
  84         memset( &scp, '\0', sizeof( scp ) );
  85         scp.sched_priority = sched_get_priority_max( SCHED_FIFO ) - 1;
  86 #ifndef __DARWIN__
  87         sched_setscheduler( 0, SCHED_FIFO, &scp );
  88 #endif
  89
  90         mlt_factory_init( NULL );
  91
  92         server = melted_server_init( argv[ 0 ] );
  93
  94         for ( index = 1; index < argc; index ++ )
  95         {
  96                 if ( !strcmp( argv[ index ], "-port" ) )
  97                         melted_server_set_port( server, atoi( argv[ ++ index ] ) );
  98                 else if ( !strcmp( argv[ index ], "-proxy" ) )
  99                         melted_server_set_proxy( server, argv[ ++ index ] );
 100                 else if ( !strcmp( argv[ index ], "-test" ) )
 101                         background = 0;
 102                 else if ( !strcmp( argv[ index ], "-c" ) )
 103                         config_file = argv[ ++ index ];
 104                 else
 105                         usage( argv[ 0 ] );
 106         }
 107
 108         /* Optionally detatch ourselves from the controlling tty */
 109
 110         if ( background )
 111         {
 112                 if ( fork() )
 113                         return 0;
 114                 setsid();
 115                 melted_log_init( log_syslog, LOG_NOTICE );
 116         }
 117         else
 118         {
 119                 melted_log_init( log_stderr, LOG_DEBUG );
 120         }
 121
 122         atexit( main_cleanup );
 123
 124         /* Set the config script */
 125         melted_server_set_config( server, config_file );
 126
 127         /* Execute the server */
 128         error = melted_server_execute( server );
 129
 130         /* Initialize the as-run log tracking */
 131         for ( index = 0; index < MAX_UNITS; index ++ )
 132                 asrun[ index ].clip_index = -1;
 133
 134         /* We need to wait until we're exited.. */
 135         while ( !server->shutdown )
 136         {
 137                 nanosleep( &tm, NULL );
 138
 139                 /* As-run logging */
 140                 for ( index = 0; !error && index < MAX_UNITS; index ++ )
 141                 {
 142                         melted_unit unit = melted_get_unit( index );
 143
 144                         if ( unit && melted_unit_get_status( unit, &status ) == 0 )
 145                         {
 146                                 int length = status.length - 60;
 147
 148                                 /* Reset the logging if needed */
 149                                 if ( status.clip_index != asrun[ index ].clip_index || status.position < length || status.status == unit_not_loaded )
 150                                 {
 151                                         asrun[ index ].clip_index = status.clip_index;
 152                                         asrun[ index ].is_logged = 0;
 153                                 }
 154                                 /* Log as-run only once when near the end */
 155                                 if ( ! asrun[ index ].is_logged && status.length > 0 && status.position > length )
 156                                 {
 157                                         melted_log( LOG_NOTICE, "AS-RUN U%d \"%s\" len %d pos %d", index, status.clip, status.length, status.position );
 158                                         asrun[ index ].is_logged = 1;
 159                                 }
 160                         }
 161                 }
 162         }
 163
 164         return error;
 165 }