1 files changed, 23 insertions, 3 deletions
diff --git a/src/audioinputenginemidi.cc b/src/audioinputenginemidi.cc
index 00aa518..44e8606 100644
--- a/src/audioinputenginemidi.cc
+++ b/src/audioinputenginemidi.cc
@@ -30,13 +30,25 @@
 
 #include <hugin.hpp>
 
-void AudioInputEngineMidi::loadMidiMap(std::string f, Instruments &instruments)
+AudioInputEngineMidi::AudioInputEngineMidi()
 {
+  is_valid = false;
+}
+
+bool AudioInputEngineMidi::loadMidiMap(std::string f, Instruments &instruments)
+{
+  file = "";
+  is_valid = false;
+
   DEBUG(mmap, "loadMidiMap(%s, i.size() == %d)\n", f.c_str(),
         instruments.size());
-  if(f == "") return;
+
+  if(f == "") return false;
+
   MidiMapParser p(f);
-  if(p.parse()) {/*return false;*/}
+  if(p.parse()) {
+    return false;
+  }
 
   mmap.clear();
   mmap.midimap = p.midimap;
@@ -46,6 +58,9 @@ void AudioInputEngineMidi::loadMidiMap(std::string f, Instruments &instruments)
   }
 
   file = f;
+  is_valid = true;
+
+  return true;
 }
 
 std::string AudioInputEngineMidi::midimapFile()
@@ -53,6 +68,11 @@ std::string AudioInputEngineMidi::midimapFile()
   return file;
 }
 
+bool AudioInputEngineMidi::isValid()
+{
+  return is_valid;
+}
+
 #ifdef TEST_AUDIOINPUTENGINEMIDI
 //Additional dependency files
 //deps: