Merge branch 'refs/heads/t/ubsan'

[paraslash.git] / write_common.c

diff --git a/write_common.c b/write_common.c
index d4d1b10b2ec597fa58ecf77dfad82ac01efa5d0c..41c3eb23728ab11cde71f837d4c58a1ef6908d24 100644 (file)
--- a/write_common.c
+++ b/write_common.c
@@ -1,8 +1,4 @@
-/*
- * Copyright (C) 2006 Andre Noll <maan@tuebingen.mpg.de>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 2006 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
 
 /** \file write_common.c common functions of para_audiod and para_write */
 
@@ -178,24 +174,24 @@ void print_writer_helps(bool detailed)
        }
 }
 
-static void get_btr_value(struct btr_node *btrn, const char *cmd,
+static int get_btr_value(struct btr_node *btrn, const char *cmd,
                int32_t *result)
 {
        char *buf = NULL;
        int ret = btr_exec_up(btrn, cmd, &buf);
 
-       if (ret < 0) {
-               /*
-                * This really should not happen. It means one of our parent
-                * nodes died unexpectedly. Proceed with fingers crossed.
-                */
-               PARA_CRIT_LOG("cmd %s: %s\n", cmd, para_strerror(-ret));
-               *result = 0;
-               return;
-       }
+       *result = 0;
+       /*
+        * Errors may happen when the decoder returns EOF before the writer had
+        * a chance to query the buffer tree for the channel count, sample rate
+        * etc.
+        */
+       if (ret < 0)
+               return ret;
        ret = para_atoi32(buf, result);
        assert(ret >= 0);
        free(buf);
+       return ret;
 }
 
 /**
@@ -204,11 +200,11 @@ static void get_btr_value(struct btr_node *btrn, const char *cmd,
  * \param btrn Where to start the search.
  * \param result Filled in by this function.
  *
- * This function is assumed to succeed and terminates on errors.
+ * \return Standard.
  */
-void get_btr_sample_rate(struct btr_node *btrn, int32_t *result)
+int get_btr_sample_rate(struct btr_node *btrn, int32_t *result)
 {
-       get_btr_value(btrn, "sample_rate", result);
+       return get_btr_value(btrn, "sample_rate", result);
 }
 
 /**
@@ -216,10 +212,12 @@ void get_btr_sample_rate(struct btr_node *btrn, int32_t *result)
  *
  * \param btrn See \ref get_btr_sample_rate.
  * \param result See \ref get_btr_sample_rate.
+ *
+ * \return Standard.
  */
-void get_btr_channels(struct btr_node *btrn, int32_t *result)
+int get_btr_channels(struct btr_node *btrn, int32_t *result)
 {
-       get_btr_value(btrn, "channels", result);
+       return get_btr_value(btrn, "channels", result);
 }
 
 /**
@@ -227,8 +225,10 @@ void get_btr_channels(struct btr_node *btrn, int32_t *result)
  *
  * \param btrn See \ref get_btr_sample_rate.
  * \param result Contains the sample format as an enum sample_format type.
+ *
+ * \return Standard.
  */
-void get_btr_sample_format(struct btr_node *btrn, int32_t *result)
+int get_btr_sample_format(struct btr_node *btrn, int32_t *result)
 {
-       get_btr_value(btrn, "sample_format", result);
+       return get_btr_value(btrn, "sample_format", result);
 }