avutil/bprint: add av_vbprintf()

Reviewed-by: Nicolas George <nicolas.george@normalesup.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 7 insertions, 0 deletions

diff --git a/libavutil/bprint.h b/libavutil/bprint.h
index dc86f12415..bb1de25c4a 100644
--- a/libavutil/bprint.h
+++ b/libavutil/bprint.h
@@ -21,6 +21,8 @@
 #ifndef AVUTIL_BPRINT_H
 #define AVUTIL_BPRINT_H
 
+#include <stdarg.h>
+
 #include "attributes.h"
 #include "avstring.h"
 
@@ -122,6 +124,11 @@ void av_bprint_init_for_buffer(AVBPrint *buf, char *buffer, unsigned size);
 void av_bprintf(AVBPrint *buf, const char *fmt, ...) av_printf_format(2, 3);
 
 /**
+ * Append a formatted string to a print buffer.
+ */
+void av_vbprintf(AVBPrint *buf, const char *fmt, va_list vl_arg);
+
+/**
  * Append char c n times to a print buffer.
  */
 void av_bprint_chars(AVBPrint *buf, char c, unsigned n);