Implement avformat_version().

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@14667 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavformat/avformat.h

@@ -22,7 +22,7 @@
 #define FFMPEG_AVFORMAT_H
 
 #define LIBAVFORMAT_VERSION_MAJOR 52
-#define LIBAVFORMAT_VERSION_MINOR 19
+#define LIBAVFORMAT_VERSION_MINOR 20
 #define LIBAVFORMAT_VERSION_MICRO  0
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
@@ -35,6 +35,11 @@
 
 #define LIBAVFORMAT_IDENT       "Lavf" AV_STRINGIFY(LIBAVFORMAT_VERSION)
 
+/**
+ * Returns the LIBAVFORMAT_VERSION_INT constant.
+ */
+unsigned avformat_version(void);
+
 #include <time.h>
 #include <stdio.h>  /* FILE */
 #include "libavcodec/avcodec.h"

libavformat/utils.c

@@ -33,6 +33,11 @@
  * various utility functions for use within FFmpeg
  */
 
+unsigned avformat_version(void)
+{
+    return LIBAVFORMAT_VERSION_INT;
+}
+
 static void av_frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den);
 static void av_frac_add(AVFrac *f, int64_t incr);