Guard against division by zero in the peak meter (the settings menu allows the user the set range min and max to the same value; maybe that should be changed too).

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10631 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 10 insertions, 0 deletions

diff --git a/apps/recorder/peakmeter.c b/apps/recorder/peakmeter.c
index 58c85b2161..39444fe787 100644
--- a/apps/recorder/peakmeter.c
+++ b/apps/recorder/peakmeter.c
@@ -347,6 +347,11 @@ void peak_meter_set_min(int newmin)
     }
 
     pm_range = peak_meter_range_max - peak_meter_range_min;
+    
+    /* Avoid division by zero. */
+    if (pm_range == 0) {
+        pm_range = 1;
+    }
 
     pm_db_min = calc_db(peak_meter_range_min);
     pm_db_range = pm_db_max - pm_db_min;
@@ -392,6 +397,11 @@ void peak_meter_set_max(int newmax)
 
     pm_range = peak_meter_range_max - peak_meter_range_min;
 
+    /* Avoid division by zero. */
+    if (pm_range == 0) {
+        pm_range = 1;
+    }
+
     pm_db_max = calc_db(peak_meter_range_max);
     pm_db_range = pm_db_max - pm_db_min;
     int i;