3 files changed, 11 insertions, 3 deletions
diff --git a/apps/codecs/mp3_enc.c b/apps/codecs/mp3_enc.c
index 2dc9bcb..26cc1dd 100644
--- a/apps/codecs/mp3_enc.c
+++ b/apps/codecs/mp3_enc.c
@@ -2329,6 +2329,9 @@ static bool on_start_file(struct enc_file_event_data *data)
 
 static bool on_end_file(struct enc_file_event_data *data)
 {
+    if (data->rec_file < 0)
+        return false; /* file already closed, nothing more we can do */
+
     /* always _try_ to write the file header, even on error */
     if (ci->close(data->rec_file) != 0)
         return false;
diff --git a/apps/codecs/wav_enc.c b/apps/codecs/wav_enc.c
index 25d2838..5932fd3 100644
--- a/apps/codecs/wav_enc.c
+++ b/apps/codecs/wav_enc.c
@@ -144,10 +144,12 @@ static bool on_end_file(struct enc_file_event_data *data)
     struct riff_header hdr;
     uint32_t data_size;
 
-    /* always _try_ to write the file header, even on error */
+    if (data->rec_file < 0)
+        return false; /* file already closed, nothing more we can do */
 
-    if (ci->lseek(data->rec_file, 0, SEEK_SET) != 0 ||
-        ci->read(data->rec_file, &hdr, sizeof (hdr)) != sizeof (hdr))
+    /* always _try_ to write the file header, even on error */
+    if ((ci->lseek(data->rec_file, 0, SEEK_SET)) ||
+        (ci->read(data->rec_file, &hdr, sizeof (hdr)) != sizeof (hdr)))
     {
         return false;
     }
diff --git a/apps/codecs/wavpack_enc.c b/apps/codecs/wavpack_enc.c
index 70261e7..670a518 100644
--- a/apps/codecs/wavpack_enc.c
+++ b/apps/codecs/wavpack_enc.c
@@ -257,6 +257,9 @@ static bool on_end_file(struct enc_file_event_data *data)
 
     uint32_t data_size;
 
+    if (data->rec_file < 0)
+        return false; /* file already closed, nothing more we can do */
+
     /* always _try_ to write the file header, even on error */
 
     /* read template headers at start */