output: delay reopen after device failure

When one of several output devices failed, MPD tried to reopen it
quite often, wasting a lot of resources.  This patch adds a delay:
wait 10 seconds before retrying.  This might be changed to exponential
delays later, but for now, it makes the problem go away.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/output_internal.h b/src/output_internal.h
index 0fae6f30..cfa23121 100644
--- a/src/output_internal.h
+++ b/src/output_internal.h
@@ -23,6 +23,8 @@
 #include "pcm_utils.h"
 #include "notify.h"
 
+#include <time.h>
+
 struct audio_output {
 	/**
 	 * The device's configured display name.
@@ -51,6 +53,12 @@ struct audio_output {
 	bool open;
 
 	/**
+	 * If not zero, the device has failed, and should not be
+	 * reopened automatically before this time stamp.
+	 */
+	time_t reopen_after;
+
+	/**
 	 * The audio_format in which audio data is received from the
 	 * player thread (which in turn receives it from the decoder).
 	 */