Object validity checks

[melted] / mlt++ / test / play.cpp

diff --git a/mlt++/test/play.cpp b/mlt++/test/play.cpp
index 5920a4b..1707d05 100644 (file)
--- a/mlt++/test/play.cpp
+++ b/mlt++/test/play.cpp
@@ -11,9 +11,14 @@ using namespace Mlt;
 int main( int argc, char **argv )
 {
        Factory::init( NULL );
+       Producer *producer = Factory::producer( argv[ 1 ] );
+       if ( !producer->is_valid( ) )
+       {
+               cerr << "Can't construct producer for " << argv[ 1 ] << endl;
+               return 0;
+       }
        Consumer *consumer = Factory::consumer( "sdl" );
        consumer->set( "rescale", "none" );
-       Producer *producer = Factory::producer( argv[ 1 ] );
        Filter *filter = Factory::filter( "greyscale" );
        filter->connect( *producer );
        consumer->connect( *filter );