Check that we have a connection to the disk writer before starting to use it in earnest.

[dcpomatic.git] / src / lib / disk_writer_messages.h

diff --git a/src/lib/disk_writer_messages.h b/src/lib/disk_writer_messages.h
index d31a9cb0ad50c8b63455280b4150d77360bbbed1..406afc61da866b36001582e5b374514ce19478f5 100644 (file)
--- 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: