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
  33 #include <framework/mlt.h>
  34 #include <mvcp/mvcp_notifier.h>
  35 #include <mvcp/mvcp_status.h>
  36
  37 /* Application header files */
  38 #include "melted_server.h"
  39 #include "melted_log.h"
  40 #include "melted_commands.h"
  41 #include "melted_unit.h"
  42
  43 /** Our server context.
  44 */
  45
  46 static melted_server server = NULL;
  47
  48 /** atexit shutdown handler for the server.
  49 */
  50
  51 static void main_cleanup( )
  52 {
  53         melted_server_close( server );
  54 }
  55
  56 /** Report usage and exit.
  57 */
  58
  59 void usage( char *app )
  60 {
  61         fprintf( stderr, "Usage: %s [-test] [-port NNNN] [-c config-file]\n", app );
  62         exit( 0 );
  63 }
  64
  65 /** The main function.
  66 */
  67
  68 int main( int argc, char **argv )
  69 {
  70         int error = 0;
  71         int index = 0;
  72         int background = 1;
  73         struct timespec tm = { 1, 0 };
  74         struct sched_param scp;
  75         mvcp_status_t status;
  76         struct {
  77                 int clip_index;
  78                 int is_logged;
  79         } asrun[ MAX_UNITS ];
  80         const char *config_file = "/etc/melted.conf";
  81
  82         // Use realtime scheduling if possible
  83         memset( &scp, '\0', sizeof( scp ) );
  84         scp.sched_priority = sched_get_priority_max( SCHED_FIFO ) - 1;
  85 #ifndef __DARWIN__
  86         sched_setscheduler( 0, SCHED_FIFO, &scp );
  87 #endif
  88
  89         mlt_factory_init( NULL );
  90
  91         server = melted_server_init( argv[ 0 ] );
  92
  93         for ( index = 1; index < argc; index ++ )
  94         {
  95                 if ( !strcmp( argv[ index ], "-port" ) )
  96                         melted_server_set_port( server, atoi( argv[ ++ index ] ) );
  97                 else if ( !strcmp( argv[ index ], "-proxy" ) )
  98                         melted_server_set_proxy( server, argv[ ++ index ] );
  99                 else if ( !strcmp( argv[ index ], "-test" ) )
 100                         background = 0;
 101                 else if ( !strcmp( argv[ index ], "-c" ) )
 102                         config_file = argv[ ++ index ];
 103                 else
 104                         usage( argv[ 0 ] );
 105         }
 106
 107         /* Optionally detatch ourselves from the controlling tty */
 108
 109         if ( background )
 110         {
 111                 if ( fork() )
 112                         return 0;
 113                 setsid();
 114                 melted_log_init( log_syslog, LOG_NOTICE );
 115         }
 116         else
 117         {
 118                 melted_log_init( log_stderr, LOG_DEBUG );
 119         }
 120
 121         atexit( main_cleanup );
 122
 123         /* Set the config script */
 124         melted_server_set_config( server, config_file );
 125
 126         /* Execute the server */
 127         error = melted_server_execute( server );
 128
 129         /* Initialize the as-run log tracking */
 130         for ( index = 0; index < MAX_UNITS; index ++ )
 131                 asrun[ index ].clip_index = -1;
 132
 133         /* We need to wait until we're exited.. */
 134         while ( !server->shutdown )
 135         {
 136                 nanosleep( &tm, NULL );
 137
 138                 /* As-run logging */
 139                 for ( index = 0; !error && index < MAX_UNITS; index ++ )
 140                 {
 141                         melted_unit unit = melted_get_unit( index );
 142
 143                         if ( unit && melted_unit_get_status( unit, &status ) == 0 )
 144                         {
 145                                 int length = status.length - 60;
 146
 147                                 /* Reset the logging if needed */
 148                                 if ( status.clip_index != asrun[ index ].clip_index || status.position < length || status.status == unit_not_loaded )
 149                                 {
 150                                         asrun[ index ].clip_index = status.clip_index;
 151                                         asrun[ index ].is_logged = 0;
 152                                 }
 153                                 /* Log as-run only once when near the end */
 154                                 if ( ! asrun[ index ].is_logged && status.length > 0 && status.position > length )
 155                                 {
 156                                         melted_log( LOG_NOTICE, "AS-RUN U%d \"%s\" len %d pos %d", index, status.clip, status.length, status.position );
 157                                         asrun[ index ].is_logged = 1;
 158                                 }
 159                         }
 160                 }
 161         }
 162
 163         return error;
 164 }