lavu: add an API function to return the Libav version string

This returns something like "v12_dev0-1332-g333a27c". This is much more
useful than the individual library versions, of which there are too
many, and which are very hard to map back to releases or git commits.

Signed-off-by: Janne Grunau <janne-libav@jannau.net>

2 files changed, 14 insertions, 0 deletions

diff --git a/libavutil/avutil.h b/libavutil/avutil.h
index f056415..688068e 100644
--- a/libavutil/avutil.h
+++ b/libavutil/avutil.h
@@ -164,6 +164,13 @@
 unsigned avutil_version(void);
 
 /**
+ * Return an informative version string. This usually is the actual release
+ * version number or a git commit description. This string has no fixed format
+ * and can change any time. It should never be parsed by code.
+ */
+const char *av_version_info(void);
+
+/**
  * Return the libavutil build-time configuration.
  */
 const char *avutil_configuration(void);
diff --git a/libavutil/utils.c b/libavutil/utils.c
index c8c161d..8dcf3b6 100644
--- a/libavutil/utils.c
+++ b/libavutil/utils.c
@@ -19,11 +19,18 @@
 #include "config.h"
 #include "avutil.h"
 
+#include "avversion.h"
+
 /**
  * @file
  * various utility functions
  */
 
+const char *av_version_info(void)
+{
+    return LIBAV_VERSION;
+}
+
 unsigned avutil_version(void)
 {
     return LIBAVUTIL_VERSION_INT;