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, 5 insertions, 0 deletions

diff --git a/libavutil/dict.c b/libavutil/dict.c
index cb5f7b160f..1344613fa9 100644
--- a/libavutil/dict.c
+++ b/libavutil/dict.c
@@ -23,6 +23,11 @@
 #include "internal.h"
 #include "mem.h"
 
+int av_dict_count(const AVDictionary *m)
+{
+    return m ? m->count : 0;
+}
+
 AVDictionaryEntry *
 av_dict_get(AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
 {