libavfilter: make ff_null_start_frame_keep_ref() a non static inline function.

Its only used through the start_frame pointer and thus cannot be inlined easily.
It also appears to break compilation with some unidentified compiler on darwin.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 6 insertions, 0 deletions

diff --git a/libavfilter/video.c b/libavfilter/video.c
index d443885df2..f23592e907 100644
--- a/libavfilter/video.c
+++ b/libavfilter/video.c
@@ -215,6 +215,12 @@ void ff_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
     ff_update_link_current_pts(link, link->cur_buf->pts);
 }
 
+void ff_null_start_frame_keep_ref(AVFilterLink *inlink,
+                                                AVFilterBufferRef *picref)
+{
+    avfilter_start_frame(inlink->dst->outputs[0], avfilter_ref_buffer(picref, ~0));
+}
+
 void ff_null_end_frame(AVFilterLink *link)
 {
     ff_end_frame(link->dst->outputs[0]);