X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fdisk_writer_messages.h;h=406afc61da866b36001582e5b374514ce19478f5;hb=d5bdc5cf073987043ace62378b02ffee5af818bd;hp=d31a9cb0ad50c8b63455280b4150d77360bbbed1;hpb=e28f10cd045d3a420689c9aafc5abaa64d35fa92;p=dcpomatic.git

diff --git a/src/lib/disk_writer_messages.h b/src/lib/disk_writer_messages.h
index d31a9cb0a..406afc61d 100644
--- a/src/lib/disk_writer_messages.h
+++ b/src/lib/disk_writer_messages.h
@@ -23,6 +23,16 @@
  * by \n.
  */
 
+/* PING */
+
+// Front-end sends:
+
+#define DISK_WRITER_PING "P"
+
+// Back-end responds
+
+#define DISK_WRITER_PONG "O"
+
 /* REQUEST TO WRITE DCP */
 
 // Front-end sends: