Do not use highest RT priority by default.

Add -prio <n> command line option.

diff --git a/src/melted/melted.c b/src/melted/melted.c
index be019ec..f52e836 100644 (file)
--- a/src/melted/melted.c
+++ b/src/melted/melted.c
@@ -58,7 +58,7 @@ static void main_cleanup( )
 
 void usage( char *app )
 {
-       fprintf( stderr, "Usage: %s [-test] [-port NNNN] [-c config-file]\n", app );
+       fprintf( stderr, "Usage: %s [-prio NNNN|max] [-test] [-port NNNN] [-c config-file]\n", app );
        exit( 0 );
 }
 
@@ -71,7 +71,6 @@ int main( int argc, char **argv )
        int index = 0;
        int background = 1;
        struct timespec tm = { 1, 0 };
-       struct sched_param scp;
        mvcp_status_t status;
        struct {
                int clip_index;
@@ -79,11 +78,24 @@ int main( int argc, char **argv )
        } asrun[ MAX_UNITS ];
        const char *config_file = "/etc/melted.conf";
 
-       // Use realtime scheduling if possible
-       memset( &scp, '\0', sizeof( scp ) );
-       scp.sched_priority = sched_get_priority_max( SCHED_FIFO ) - 1;
 #ifndef __DARWIN__
-       sched_setscheduler( 0, SCHED_FIFO, &scp );
+       for ( index = 1; index < argc; index ++ )
+       {
+               if ( !strcmp( argv[ index ], "-prio" ) )
+               {
+                       struct sched_param scp;
+                       char* prio = argv[ ++ index ];
+
+                       memset( &scp, 0, sizeof( scp ) );
+
+                       if( !strcmp( prio, "max" ) )
+                               scp.sched_priority = sched_get_priority_max( SCHED_FIFO ) - 1;
+                       else
+                               scp.sched_priority = atoi(prio);
+
+                       sched_setscheduler( 0, SCHED_FIFO, &scp );
+               }
+       }
 #endif
 
        mlt_factory_init( NULL );
@@ -100,6 +112,8 @@ int main( int argc, char **argv )
                        background = 0;
                else if ( !strcmp( argv[ index ], "-c" ) )
                        config_file = argv[ ++ index ];
+               else if ( !strcmp( argv[ index ], "-prio" ) )
+                       index++;
                else
                        usage( argv[ 0 ] );
        }