1 files changed, 7 insertions, 0 deletions
diff --git a/midimonster.c b/midimonster.c
index b6f7758..d9a99d9 100644
--- a/midimonster.c
+++ b/midimonster.c
@@ -14,6 +14,7 @@
 #include "backend.h"
 #include "plugin.h"
 
+/* Core-internal structures */
 typedef struct /*_event_collection*/ {
 	size_t alloc;
 	size_t n;
@@ -21,6 +22,12 @@ typedef struct /*_event_collection*/ {
 	channel_value* value;
 } event_collection;
 
+typedef struct /*_mm_channel_mapping*/ {
+	channel* from;
+	size_t destinations;
+	channel** to;
+} channel_mapping;
+
 static size_t mappings = 0;
 static channel_mapping* map = NULL;
 static size_t fds = 0;