dict.c: Add av_dict_set_int helper function.

This allows getting rid of the many, slightly differing, implementations
of basically the same thing.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

doc/APIchanges

@@ -15,6 +15,9 @@ libavutil:     2014-08-09
 
 API changes, most recent first:
 
+2014-xx-xx - xxxxxxx - lavu 54.4.100 - dict.h
+  Add av_dict_set_int helper function.
+
 2014-08-xx - xxxxxxx - lavu 54.03.0 - mem.h
   Add av_strndup().
 

libavutil/dict.c

@@ -122,6 +122,14 @@ int av_dict_set(AVDictionary **pm, const char *key, const char *value,
     return 0;
 }
 
+int av_dict_set_int(AVDictionary **pm, const char *key, int64_t value,
+                int flags)
+{
+    char valuestr[22];
+    snprintf(valuestr, sizeof(valuestr), "%"PRId64, value);
+    return av_dict_set(pm, key, valuestr, flags);
+}
+
 static int parse_key_value_pair(AVDictionary **pm, const char **buf,
                                 const char *key_val_sep, const char *pairs_sep,
                                 int flags)

libavutil/dict.h

@@ -31,6 +31,8 @@
 #ifndef AVUTIL_DICT_H
 #define AVUTIL_DICT_H
 
+#include <stdint.h>
+
 #include "version.h"
 
 /**
@@ -122,6 +124,12 @@ int av_dict_count(const AVDictionary *m);
  */
 int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags);
 
+/**
+ * Convenience wrapper for av_dict_set that converts the value to a string
+ * and stores it.
+ */
+int av_dict_set_int(AVDictionary **pm, const char *key, int64_t value, int flags);
+
 /**
  * Parse the key/value pairs list and add the parsed entries to a dictionary.
  *

libavutil/version.h

@@ -56,7 +56,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  54
-#define LIBAVUTIL_VERSION_MINOR   3
+#define LIBAVUTIL_VERSION_MINOR   4
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \