Terminate MIDI player once synth ticks overflows

src/midi/fluid_midi.c

@@ -2141,6 +2141,16 @@ fluid_player_callback(void *data, unsigned int msec)
             }
         }
 
+        if(msec < player->cur_msec)
+        {
+            // overflow of fluid_synth_get_ticks()
+            FLUID_LOG(FLUID_ERR, "The maximum playback duration has been reached. Terminating player!");
+            fluid_player_stop(player);
+            fluid_player_seek(player, 0);
+            player->cur_ticks = 0;
+            return 0;
+        }
+
         player->cur_msec = msec;
         deltatime = fluid_atomic_float_get(&player->deltatime);
         player->cur_ticks = (player->start_ticks

src/midi/fluid_midi.h

@@ -305,7 +305,7 @@ struct _fluid_player_t
     int last_callback_ticks;  /* the last tick number that was passed to player->tick_callback */
     int begin_msec;           /* the time (msec) of the beginning of the file */
     int start_msec;           /* the start time of the last tempo change */
-    int cur_msec;             /* the current time */
+    unsigned int cur_msec;    /* the current time */
     int end_msec;             /* when >=0, playback is extended until this time (for, e.g., reverb) */
     char end_pedals_disabled; /* 1 once the pedals have been released after the last midi event, 0 otherwise */
     /* sync mode: indicates the tempo mode the player is driven by (see fluid_player_set_tempo()):