lavc/hevcdec: allocate local_ctx as array of structs rather than pointers

It is more efficient and easier to manage.

1 files changed, 5 insertions, 1 deletions

diff --git a/libavcodec/hevcdec.h b/libavcodec/hevcdec.h
index ca68fb54a7..5aa3d40450 100644
--- a/libavcodec/hevcdec.h
+++ b/libavcodec/hevcdec.h
@@ -439,13 +439,17 @@ typedef struct HEVCLocalContext {
     /* properties of the boundary of the current CTB for the purposes
      * of the deblocking filter */
     int boundary_flags;
+
+    // an array of these structs is used for per-thread state - pad its size
+    // to avoid false sharing
+    char padding[128];
 } HEVCLocalContext;
 
 typedef struct HEVCContext {
     const AVClass *c;  // needed by private avoptions
     AVCodecContext *avctx;
 
-    HEVCLocalContext    **local_ctx;
+    HEVCLocalContext     *local_ctx;
     unsigned           nb_local_ctx;
 
     HEVCLocalContext    *HEVClc;