dict: add av_dict_count()

This adds a function to retrieve the number of entries in a
dictionary and updates the places directly accessing what should
be an opaque struct to use this new function instead.

Signed-off-by: Mans Rullgard <mans@mansr.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/libavutil/dict.h b/libavutil/dict.h
index aa07626535..72d1e9d25b 100644
--- a/libavutil/dict.h
+++ b/libavutil/dict.h
@@ -87,6 +87,14 @@ AVDictionaryEntry *
 av_dict_get(AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags);
 
 /**
+ * Get number of entries in dictionary.
+ *
+ * @param m dictionary
+ * @return  number of entries in dictionary
+ */
+int av_dict_count(const AVDictionary *m);
+
+/**
  * Set the given entry in *pm, overwriting an existing entry.
  *
  * @param pm pointer to a pointer to a dictionary struct. If *pm is NULL