lavfi: use ceil right shift for chroma width/height.

This should fix several issues with odd dimensions inputs.

lut, vflip, pad and crop video filters also need to be checked for such
issues. It's possible sws is also affected.

1 files changed, 4 insertions, 4 deletions

diff --git a/libavfilter/vf_geq.c b/libavfilter/vf_geq.c
index a5396f8b1e..5ee75d1236 100644
--- a/libavfilter/vf_geq.c
+++ b/libavfilter/vf_geq.c
@@ -66,8 +66,8 @@ static inline double getpix(void *priv, double x, double y, int plane)
     AVFrame *picref = geq->picref;
     const uint8_t *src = picref->data[plane];
     const int linesize = picref->linesize[plane];
-    const int w = picref->width  >> ((plane == 1 || plane == 2) ? geq->hsub : 0);
-    const int h = picref->height >> ((plane == 1 || plane == 2) ? geq->vsub : 0);
+    const int w = (plane == 1 || plane == 2) ? FF_CEIL_RSHIFT(picref->width,  geq->hsub) : picref->width;
+    const int h = (plane == 1 || plane == 2) ? FF_CEIL_RSHIFT(picref->height, geq->vsub) : picref->height;
 
     if (!src)
         return 0;
@@ -209,8 +209,8 @@ static int geq_filter_frame(AVFilterLink *inlink, AVFrame *in)
         int x, y;
         uint8_t *dst = out->data[plane];
         const int linesize = out->linesize[plane];
-        const int w = inlink->w >> ((plane == 1 || plane == 2) ? geq->hsub : 0);
-        const int h = inlink->h >> ((plane == 1 || plane == 2) ? geq->vsub : 0);
+        const int w = (plane == 1 || plane == 2) ? FF_CEIL_RSHIFT(inlink->w, geq->hsub) : inlink->w;
+        const int h = (plane == 1 || plane == 2) ? FF_CEIL_RSHIFT(inlink->h, geq->vsub) : inlink->h;
 
         values[VAR_W]  = w;
         values[VAR_H]  = h;