add a volume control mutex to serialise multiple attempts to change the volume

2019-02-01 21:07:35 +00:00
parent 08e84ece27
commit 46d117b69a
1 changed files with 1 additions and 1 deletions
@@ -133,7 +133,7 @@ typedef struct {
  int32_t last_seqno_read;
  // mutexes and condition variables
  pthread_cond_t flowcontrol;
-  pthread_mutex_t ab_mutex, flush_mutex;
+  pthread_mutex_t ab_mutex, flush_mutex, volume_control_mutex;
  int fix_volume;
  uint32_t timestamp_epoch, last_timestamp,
      maximum_timestamp_interval; // timestamp_epoch of zero means not initialised, could start at 2