X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=mlt%2B%2B%2Fsrc%2FMltTractor.cpp;fp=mlt%2B%2B%2Fsrc%2FMltTractor.cpp;h=19c8a244ec16462449b6403581306fdfce676dff;hb=6d06b0de2cb66cf093bf24d9ed02fac18756105e;hp=8187a28babd3985fb1e8ef49bbc01faf8f5de595;hpb=3e2991e189a71045210d8c97458c452d6c2f02da;p=melted

diff --git a/mlt++/src/MltTractor.cpp b/mlt++/src/MltTractor.cpp
index 8187a28..19c8a24 100644
--- a/mlt++/src/MltTractor.cpp
+++ b/mlt++/src/MltTractor.cpp
@@ -87,5 +87,11 @@ int Tractor::set_track( Producer &producer, int index )
 
 Producer *Tractor::track( int index )
 {
-	return new Producer( mlt_tractor_get_track( get_tractor( ), index ) );
+	mlt_producer producer = mlt_tractor_get_track( get_tractor( ), index );
+	return producer != NULL ? new Producer( producer ) : NULL;
+}
+
+int Tractor::count( )
+{
+	return mlt_multitrack_count( mlt_tractor_multitrack( get_tractor( ) ) );
 }