video: better pipelining with vf_vapoursynth

Most of this is explained in the code comments. This change should
improve performance with vapoursynth, especially if concurrent requests
are used.

This should change nothing if vf_vapoursynth is not in the filter chain,
since non-threaded filters obviously can not asynchronously finish
filtering of frames.

1 files changed, 1 insertions, 1 deletions

diff --git a/player/main.c b/player/main.c
index 732be8c1da..48bcab0bef 100644
--- a/player/main.c
+++ b/player/main.c
@@ -378,7 +378,7 @@ struct MPContext *mp_create(void)
     return mpctx;
 }
 
-static void wakeup_playloop(void *ctx)
+void wakeup_playloop(void *ctx)
 {
     struct MPContext *mpctx = ctx;
     mp_input_wakeup(mpctx->input);