vdpau: add a constructor for AVVDPAUContext.

We will likely want to add new fields to it in the future, so this is
needed to avoid breaking ABI.

1 files changed, 5 insertions, 0 deletions

diff --git a/libavcodec/vdpau.c b/libavcodec/vdpau.c
index cc0bcffc5f..d8a35eeb3b 100644
--- a/libavcodec/vdpau.c
+++ b/libavcodec/vdpau.c
@@ -133,4 +133,9 @@ do {                        \
     return AVERROR(EINVAL);
 }
 
+AVVDPAUContext *av_vdpau_alloc_context(void)
+{
+    return av_mallocz(sizeof(AVVDPAUContext));
+}
+
 /* @}*/